阅读说明：本技术 海上风电基础 (Offshore wind power foundation ) 是由 邱旭 于 2021-09-16 设计创作，主要内容包括：本申请提供了一种海上风电基础,包括桩基础、扰流结构、安装件和牺牲阳极块,桩基础包括在其长度方向上相互连接的第一部分和第二部分,第二部分埋入海床中,海床具有海床面,第一部分位于海床面上方。扰流结构至少设在第一部分上,扰流结构包括从第一部分的外周面向外突出的扰流件和/或沿厚度方向贯穿第一部分周壁的扰流孔。安装件安装于第一部分的外壁面,安装件限定出安装槽,安装件设有与安装槽连通的开口,安装件导电,牺牲阳极块能够通过开口装入安装槽中且沿安装槽的长度方向可滑动地设置,位于安装槽中的牺牲阳极块与安装槽的槽壁面接触并浸泡在海水中。(The application provides an offshore wind power foundation, including pile foundation, vortex structure, installed part and sacrificial anode block, the pile foundation includes first part and the second part of interconnect in its length direction, and the second part is buried in the seabed, and the seabed has the sea bed surface, and the first part is located the sea bed surface top. The flow disturbing structure is at least arranged on the first part and comprises a flow disturbing piece protruding outwards from the outer peripheral surface of the first part and/or a flow disturbing hole penetrating through the peripheral wall of the first part along the thickness direction. The mounting member is installed in the outer wall surface of first portion, and the mounting member is injectd the mounting groove, and the mounting member is equipped with the opening with the mounting groove intercommunication, and the mounting member is electrically conductive, and the sacrificial anode piece can pack into the mounting groove through the opening and set up along the length direction slidable of mounting groove, and the sacrificial anode piece that is arranged in the mounting groove contacts and soaks in the sea water with the groove wall surface of mounting groove.)

1. An offshore wind power foundation, comprising:

a pile foundation including a first portion and a second portion interconnected in a length direction thereof, the second portion being buried in a seabed, the seabed having a seabed surface, the first portion being located above the seabed surface;

the flow disturbing structure is at least arranged on the first part and comprises a flow disturbing piece protruding outwards from the outer peripheral surface of the first part and/or a flow disturbing hole penetrating through the peripheral wall of the first part along the thickness direction;

the installation piece is installed in the outer wall surface of the first portion, the installation piece defines the mounting groove, the installation piece be equipped with the opening of mounting groove intercommunication, the installation piece is electrically conductive, the sacrificial anode piece can pass through the opening is packed into in the mounting groove and along the length direction slidable of mounting groove sets up, is located in the mounting groove the sacrificial anode piece with the groove wall surface contact of mounting groove and soak in the sea water.

2. The offshore wind power foundation of claim 1, wherein the plurality of turbulators are arranged along a length of the pile foundation and/or are arranged along a circumference of the pile foundation.

3. The offshore wind farm of claim 2, wherein the spoiler dimension in a first direction is the spoiler height, the first direction being orthogonal to the central axis of the pile foundation, the spoiler arranged along the length direction comprising a plurality of different heights, and/or the spoiler arranged along the circumferential direction comprising a plurality of different heights.

4. An offshore wind foundation according to any of claims 1-3, wherein said spoiler comprises one or more of a spoiler nail, a spoiler strip, a spoiler network,

wherein, the vortex nail includes a plurality ofly and is in interval arrangement on the outer peripheral face of first portion, the vortex nail is in size on the length direction of pile foundation rather than encircleing 1/2 and less than or equal to 2 of the ratio of the size in the circumference of pile foundation, the extending direction of vortex strip with the outer peripheral face of first portion is parallel to each other, the ratio of length and the width of vortex strip more than or equal to 5, the vortex net is the cladding the network structure of at least partly outer peripheral face of first portion.

5. The offshore wind power foundation of claim 1, wherein the spoiler structure comprises the spoiler and the spoiler holes, wherein the spoiler and the spoiler holes are both a plurality of pieces, and the spoiler holes are alternately distributed on the outer circumferential surface of the first portion.

6. Offshore wind power foundation according to claim 1 or 5, wherein said spoiler structures comprise a plurality of two spoiler structures being staggered in the length direction of said pile foundation and/or two spoiler structures being staggered in the circumferential direction of said pile foundation.

7. An offshore wind energy foundation according to any of claims 1-3, 5, wherein said turbulence structures comprise a plurality of turbulence structures, the density of said turbulence structures increasing towards the direction close to said seabed surface.

8. Offshore wind farm according to any of the claims 1-3, 5, characterized in that the spoiler structure comprises a plurality of, the outer circumferential surface of the first part comprising a front side facing the direction of the tidal current, a back side opposite to the front side and two side surfaces, the density of the spoiler structures distributed over the front and back side being higher than the density of the spoiler structures distributed over the two side surfaces.

9. The offshore wind farm of claim 1, wherein the mounting groove extends along a length of the pile foundation, the sacrificial anode block abuts a groove bottom surface of the mounting groove, the opening is provided at a top end of the mounting member and opposite to the groove bottom surface in the length of the pile foundation, the offshore wind farm further comprising:

the pressure plate is arranged in the mounting groove and can be arranged in the mounting groove in a separated mode, and when the pressure plate is located in the mounting groove, the pressure plate is stopped against the top end of the sacrificial anode block; and

the connecting wire is a conductive flexible wire, one end of the connecting wire is connected with the pressing plate, and the other end of the connecting wire is connected with any one of the mounting piece and the pile foundation.

10. The offshore wind foundation of claim 1, wherein said mounting groove extends along the length of said pile foundation, said sacrificial anode block abuts the groove bottom surface of said mounting groove, the top end of said mounting member protrudes from said sea level, and said opening is located above said sea level.

11. The offshore wind farm of claim 1, wherein the mounting member is annular, the mounting member fitting over the first portion, the mounting member defining a mounting groove extending circumferentially of the pile foundation, the mounting groove surrounding at least a portion of the first portion circumferentially of the pile foundation, the sacrificial anode block abutting a groove bottom surface of the mounting groove, the opening being provided at a top end of the mounting member opposite the groove bottom surface.

12. Offshore wind foundation according to claim 1, wherein the mounting groove extends in a horizontal direction, the mounting element having a first end and a second end opposite in the direction of extension of the mounting groove, the opening being provided at least one of the first end and the second end.

13. Offshore wind foundation according to any of claims 1, 9-12, wherein said mounting elements comprise a plurality of mounting elements, wherein a plurality of said mounting elements are spaced apart along the length of said pile foundation and/or wherein a plurality of said mounting elements are spaced apart along the circumference of said pile foundation.

14. Offshore wind farm according to any of the claims 1, 9-12, characterized in that the sacrificial anode blocks consist of several sub sacrificial anode blocks, which are arranged in the length direction of the installation trough.

15. Offshore wind foundation according to claim 1, characterized in that the peripheral outline of the cross section of at least a part of said pile foundation is elliptical, said offshore wind foundation comprising:

the tower drum is installed at the top end of the pile foundation;

the fan is installed at the top end of the tower barrel and comprises an impeller, and the extending direction of the rotating center line of the impeller is the same as the extending direction of the long axis of the oval shape.

16. Offshore wind foundation according to claim 15, wherein the ratio of the length of the major axis of said ellipse to the length of the minor axis is greater than 1 and equal to or less than 5.

17. The offshore wind power foundation of claim 1, wherein said pile foundations are plural, and a plurality of said pile foundations are spaced apart, said offshore wind power foundation comprising:

the top end of each pile foundation is connected with the bottom of the bearing platform, and the centers of the bottom ends of the pile foundations are positioned on the same horizontal plane and distributed along the circumference of a first ellipse;

the fan is installed at the top of the bearing platform and comprises an impeller, and the extending direction of the rotating center line of the impeller is the same as the extending direction of the long axis of the first ellipse.

18. The offshore wind power foundation of claim 17, wherein the pile foundation extends downwardly from a bottom of the cap and in a direction away from a central axis of the cap.

19. The offshore wind power foundation of claim 17 or 18, wherein the centers of the top ends of the pile foundations are located on the same horizontal plane and are distributed along the circumference of a second ellipse, the major axis of which extends in the direction of extension of the rotation center line of the impeller.

20. Offshore wind foundation according to claim 17, wherein the peripheral outline of the cross-section of the platform is elliptical and the major axis of the ellipse extends in the extension of the rotation centre line of the impeller.

21. Offshore wind energy foundation according to claim 1, characterized in that it further comprises: a conduit inserted into the seabed through the circumferential wall of the pile foundation from the inside of the pile foundation, a portion of the conduit located inside the pile foundation being provided with a grouting port, and a portion of the conduit inserted into the seabed being provided with a grouting port, the conduit being for injecting seabed reinforcing material into the seabed to reinforce the seabed in the vicinity of the pile foundation.

22. Offshore wind foundation according to claim 21, wherein said conduit is inserted obliquely downwards into said seabed.

23. Offshore wind power foundation according to claim 21 or 22, wherein said conduit is in plurality, a plurality of said conduits being spaced around said pile foundation.

24. The offshore wind farm of claim 23, wherein a portion of the plurality of conduits are spaced apart along the length of the pile foundation.

25. The offshore wind power foundation of claim 24, wherein the plurality of conduits are divided into a plurality of groups, each group of conduits includes a plurality of conduits, the plurality of conduits in each group of conduits are spaced apart and radially arranged along the circumference of the pile foundation, the plurality of groups of conduits are spaced apart along the length of the pile foundation, and the ends of the conduits in each group of conduits that extend into the seabed are all located on the same horizontal plane and spaced apart along the circumference of the pile foundation.

26. The offshore wind-power reinforcing apparatus according to claim 21, wherein the plurality of grouting ports of the duct are provided, and at least a part of the grouting ports are arranged at intervals along a length direction of the duct.

Technical Field

The invention relates to the field of offshore wind power, in particular to an offshore wind power foundation.

Background

Wind energy is increasingly regarded by human beings as a clean and harmless renewable energy source. Compared with land wind energy, offshore wind energy resources not only have higher wind speed, but also are far away from a coastline, are not influenced by a noise limit value, and allow the unit to be manufactured in a larger scale.

The offshore wind power foundation is the key point for supporting the whole offshore wind power machine, the cost accounts for 20-25% of the investment of the whole offshore wind power, and most accidents of offshore wind power generators are caused by unstable pile foundation. Due to the action of waves and tide, silt around the offshore wind power pile foundation can be flushed and form a flushing pit, and the flushing pit can influence the stability of the pile foundation. In addition, the water flow mixed with silt near the surface of the seabed continuously washes the pile foundation, corrodes and destroys the surface of the pile foundation, and can cause the collapse of the offshore wind turbine unit in serious cases. The anti-scouring device of the currently adopted offshore wind power pile foundation is mainly a riprap protection method. However, the integrity of the riprap protection is poor, and the maintenance cost and the workload in the application process are large.

Disclosure of Invention

The present invention is based on the discovery and recognition by the inventors of the following facts and problems:

due to the action of sea waves and tides, a phenomenon of scouring pits occurs around the foundation of the offshore wind power pile. The scouring phenomenon is a complex coupling process involving the interaction of water flow, sediment and structures. The main reason of causing the scouring is horseshoe-shaped vortex generated around the pile foundation, the horseshoe-shaped vortex is generated due to the obstruction of the pile foundation when seawater flows, when the sea water flows towards the pile foundation, the wave current presents a downward rolling and excavating vortex structure, the vortex structure lifts up the sediment on the seabed, and further brings the sediment away from the place around the pile foundation, a scouring pit is formed, the depth of the pile foundation is shallow due to the formation of the scouring pit, the vibration frequency of a cylinder is reduced, the pile foundation is over-fatigue is caused slightly, and the fracture accident is caused seriously.

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, the offshore wind power foundation provided by the invention has good anti-scouring performance.

The offshore wind power foundation according to the invention comprises: a pile foundation including a first portion and a second portion interconnected in a length direction thereof, the second portion being buried in a seabed, the seabed having a seabed surface, the first portion being located above the seabed surface; the flow disturbing structure is at least arranged on the first part and comprises a flow disturbing piece protruding outwards from the outer peripheral surface of the first part and/or a flow disturbing hole penetrating through the peripheral wall of the first part along the thickness direction; the installation piece is installed in the outer wall surface of the first portion, the installation piece defines the mounting groove, the installation piece be equipped with the opening of mounting groove intercommunication, the installation piece is electrically conductive, the sacrificial anode piece can pass through the opening is packed into in the mounting groove and along the length direction slidable of mounting groove sets up, is located in the mounting groove the sacrificial anode piece with the groove wall surface contact of mounting groove and soak in the sea water.

According to the offshore wind power foundation provided by the embodiment of the invention, the pile foundation is provided with the turbulence structure, and the turbulence structure actively disturbs the tide rushing to the pile foundation to locally change the flow speed and direction of the tide, so that the energy of the tide is dissipated to a certain extent. The turbulence structure has the effects of energy dissipation and impact reduction, inhibits the formation of horseshoe-shaped vortexes near the pile foundation, effectively protects the soil around the pile foundation and avoids the formation of scouring pits. Compared with the stone throwing protection method in the related art, the stone throwing protection method has the advantages of stronger stability, better anti-scouring effect and better reliability.

In addition, the offshore wind power foundation with the anti-corrosion function provided by the embodiment of the invention utilizes the sacrificial anode block to prevent the pile foundation from being corroded, so that the service life of the pile foundation is prolonged, the sacrificial anode block does not need to be welded during replacement, the replacement process is simple and rapid, the danger coefficient is small, and the cost is lower.

In some embodiments, the spoiler is a plurality of spoilers, and the spoilers are arranged along the length direction of the pile foundation and/or the spoilers are arranged along the circumference of the pile foundation.

In some embodiments, the size of the spoiler in the first direction is the height of the spoiler, the first direction is orthogonal to the central axis of the pile foundation, the spoiler arranged along the length direction comprises a plurality of different heights, and/or the spoiler arranged along the circumferential direction comprises a plurality of different heights.

In some embodiments, the vortex piece includes one or more in vortex nail, vortex strip, the vortex net, wherein, the vortex nail includes a plurality ofly and is in interval arrangement on the outer peripheral face of first portion, the vortex nail is in size on the length direction of stake basis rather than encircleing the ratio more than or equal to 1/2 and less than or equal to 2 of the size in the circumference of stake basis, the extending direction of vortex strip with the outer peripheral face of first portion is parallel to each other, the ratio more than or equal to 5 of length and width of vortex strip, the vortex net is the cladding the network structure of at least some outer peripheral faces of first portion.

In some embodiments, the spoiler structure includes the spoiler and the spoiler hole, the spoiler and the spoiler hole are a plurality of, and the spoiler hole are alternately distributed on the outer circumferential surface of the first portion.

In some embodiments, the spoiler structure comprises a plurality of two spoiler structures which are adjacent to each other in the length direction of the pile foundation and/or adjacent to each other in the circumferential direction of the pile foundation.

In some embodiments, the spoiler structure comprises a plurality of spoiler structures, and the density of the spoiler structures increases towards the direction close to the surface of the sea bed.

In some embodiments, the spoiler structure includes a plurality of spoiler structures, the outer circumferential surface of the first portion includes a front surface facing the direction of the flow of the power, a back surface opposite to the front surface, and two side surfaces, and the density of the spoiler structures distributed on the front surface and the back surface is greater than the density of the spoiler structures distributed on the two side surfaces.

In some embodiments, the installation groove extends along the length direction of the pile foundation, the sacrificial anode block abuts against a groove bottom surface of the installation groove, the opening is provided at the top end of the mounting member and is opposite to the groove bottom surface in the length direction of the pile foundation, and the offshore wind power foundation further comprises:

the pressure plate is arranged in the mounting groove and can be arranged in the mounting groove in a separated mode, and when the pressure plate is located in the mounting groove, the pressure plate is stopped against the top end of the sacrificial anode block; and

the connecting wire is a conductive flexible wire, one end of the connecting wire is connected with the pressing plate, and the other end of the connecting wire is connected with any one of the mounting piece and the pile foundation.

In some embodiments, the mounting groove extends along the length of the pile foundation, the sacrificial anode block abuts a groove bottom surface of the mounting groove, the top end of the mounting member protrudes from the sea level, and the opening is located above the sea level.

In some embodiments, the mounting member is annular, the mounting member is fitted over the first portion, the mounting member defines a mounting groove extending in a circumferential direction of the pile foundation, the mounting groove surrounds at least a part of the first portion in the circumferential direction of the pile foundation, the sacrificial anode block abuts against a groove bottom surface of the mounting groove, and the opening is provided at a top end of the mounting member and opposite to the groove bottom surface.

In some embodiments, the mounting slot extends in a horizontal direction, the mounting member has first and second ends opposite in the direction of extension of the mounting slot, and the opening is provided at least one of the first and second ends.

In some embodiments, the mounting member includes a plurality of mounting members, and the plurality of mounting members are arranged at intervals along the length direction of the pile foundation and/or the plurality of mounting members are arranged at intervals along the circumference direction of the pile foundation.

In some embodiments, the sacrificial anode block is composed of a plurality of sub sacrificial anode blocks, and the plurality of sub sacrificial anode blocks are arranged along the length direction of the mounting groove.

In some embodiments, the outer circumferential profile of the cross-section of at least a portion of the pile foundation is elliptical, the offshore wind power foundation comprising:

the tower drum is installed at the top end of the pile foundation;

the fan is installed at the top end of the tower barrel and comprises an impeller, and the extending direction of the rotating center line of the impeller is the same as the extending direction of the long axis of the oval shape.

In some embodiments, the ratio of the length of the major axis to the length of the minor axis of the ellipse is greater than 1 and equal to or less than 5.

In some embodiments, the pile foundation is a plurality of pile foundations, the plurality of pile foundations are arranged at intervals, and the offshore wind power foundation comprises:

the top end of each pile foundation is connected with the bottom of the bearing platform, and the centers of the bottom ends of the pile foundations are positioned on the same horizontal plane and distributed along the circumference of a first ellipse;

the fan is installed at the top of the bearing platform and comprises an impeller, and the extending direction of the rotating center line of the impeller is the same as the extending direction of the long axis of the first ellipse.

In some embodiments, the pile foundation extends downwardly from a bottom of the cap and in a direction away from a central axis of the cap.

In some embodiments, the centers of the tops of the pile foundations are located on the same horizontal plane and are distributed along the circumference of a second ellipse, and the long axis of the second ellipse extends along the extending direction of the rotation center line of the impeller.

In some embodiments, the peripheral contour of the cross-section of the platform is an ellipse, and the major axis of the ellipse extends in the direction of extension of the rotational centerline of the impeller.

In some embodiments, the offshore wind farm further comprises: a conduit inserted into the seabed through the circumferential wall of the pile foundation from the inside of the pile foundation, a portion of the conduit located inside the pile foundation being provided with a grouting port, and a portion of the conduit inserted into the seabed being provided with a grouting port, the conduit being for injecting seabed reinforcing material into the seabed to reinforce the seabed in the vicinity of the pile foundation.

In some embodiments, the conduit is inserted into the seabed at a downward incline.

In some embodiments, the conduit is a plurality of conduits spaced around the pile foundation.

In some embodiments, a portion of the plurality of conduits are spaced apart along the length of the pile foundation.

In some embodiments, the plurality of guide pipes are divided into a plurality of groups, each group of guide pipes comprises a plurality of guide pipes, the guide pipes in each group of guide pipes are arranged at intervals along the circumference of the pile foundation and are arranged in a radial manner, the guide pipes in each group of guide pipes are arranged at intervals in the length direction of the pile foundation, and the ends of the guide pipes in each group of guide pipes, which extend into the seabed, are all located on the same horizontal plane and are arranged at intervals along the circumference of the pile foundation.

In some embodiments, the plurality of injection ports of the guide tube are provided, and at least a part of the injection ports are arranged at intervals along the length direction of the guide tube.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

FIG. 1 is a first structural schematic diagram (a turbulence structure is a turbulence nail) of an offshore wind power foundation according to an embodiment of the invention.

FIG. 2 is a schematic structural diagram II of an offshore wind power foundation according to an embodiment of the invention (a turbulence structure is a turbulence nail).

FIG. 3 is a schematic structural diagram III of an offshore wind power foundation according to an embodiment of the invention (a spoiler structure is a spoiler).

FIG. 4 is a fourth structural schematic diagram (the spoiler structure is a spoiler) of the offshore wind power foundation according to the embodiment of the invention.

Fig. 5 is a schematic structural diagram five of an offshore wind power foundation according to an embodiment of the invention (a spoiler structure is a spoiler network).

FIG. 6 is a schematic structural diagram six of an offshore wind power foundation according to an embodiment of the invention (a spoiler structure is a spoiler hole).

FIG. 7 is a seventh schematic structural diagram of an offshore wind power foundation according to an embodiment of the invention (the spoiler structure is a spoiler strip and a spoiler hole).

FIG. 8 is a structural schematic diagram eight of an offshore wind power foundation according to an embodiment of the invention (the turbulence structures are turbulence bars and turbulence nails).

FIG. 9 is a schematic diagram of an offshore wind power infrastructure with anti-corrosion functionality according to an embodiment of the first aspect of the invention.

FIG. 10 is a schematic diagram of an offshore wind power infrastructure with anti-corrosion functionality according to an embodiment of the second aspect of the invention.

FIG. 11 is a schematic diagram of an offshore wind power infrastructure with anti-corrosion functionality according to an embodiment of the third aspect of the invention.

FIG. 12 is a schematic diagram of an offshore wind power infrastructure with anti-corrosion functionality according to a fourth embodiment of the invention.

FIG. 13 is a schematic diagram of an offshore wind power infrastructure with anti-corrosion functionality according to an embodiment of a fifth aspect of the present invention.

Fig. 14 is an enlarged schematic view at a in fig. 13.

FIG. 15 is a schematic structural diagram of an offshore wind power single pile foundation according to an embodiment of the invention.

FIG. 16 is a top view of an offshore wind power single pile foundation according to an embodiment of the present invention.

Fig. 17 is a schematic structural diagram of a third part of an offshore wind power single pile foundation according to an embodiment of the invention.

Fig. 18 is a schematic structural diagram of a fourth part of an offshore wind power single pile foundation according to an embodiment of the invention.

FIG. 19 is a top view of a fourth portion of an offshore wind power single pile foundation according to an embodiment of the present invention.

Fig. 20 is a schematic structural diagram of a flange of an offshore wind power single pile foundation according to an embodiment of the invention.

Fig. 21 is a schematic structural diagram of an offshore wind power multi-pile foundation according to an embodiment of the invention.

FIG. 22 is a front view of an offshore wind power multi-pile foundation according to an embodiment of the invention.

FIG. 23 is a top view of an offshore wind power multi-pile foundation according to an embodiment of the invention.

Fig. 24 is a bottom view of an offshore wind power multi-pile foundation according to an embodiment of the invention.

FIG. 25 is a first state diagram in the process of constructing an offshore wind power foundation according to an embodiment of the application.

FIG. 26 is a second state diagram during construction of an offshore wind power foundation according to an embodiment of the application.

FIG. 27 is a third state diagram during construction of an offshore wind power foundation according to an embodiment of the application.

FIG. 28 is a fourth state diagram in the process of constructing an offshore wind power foundation according to the embodiment of the application.

Fig. 29 is an enlarged view of fig. 28 at a.

Reference numerals:

1 part of offshore wind power foundation,

Pile foundation 11, first part 111, second part 112, third part 113, fourth part 114,

The spoiler 12, the spoiler nail 121, the spoiler strips 122, the spoiler mesh 123, the spoiler holes 13, the first spoiler hole 131, the second spoiler hole 132, the flange 14, the lifting lugs 15, the,

A sea bed surface 2, a reinforcing rib ring 3,

The mounting piece 20, the mounting groove 21, the opening 22, the window 230, the side plate 23, the bottom plate 24, the top plate 25, the mounting column 30, the sacrificial anode block 4, the sub-sacrificial anode block 40, the pressure plate 5, the connecting lead 6, the bearing platform 7, the tower 8, the first ellipse 91, the second ellipse 92, the concrete layer 101, the guide pipe 102, the grouting opening 103, the grouting opening 104 and the head 105.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

An offshore wind farm 1 according to an embodiment of the invention is described below with reference to fig. 1-8, the offshore wind farm 1 comprising a pile foundation 11 and a spoiler structure.

The pile foundation 11 comprises a first portion 111 and a second portion 112 connected to each other in its length direction, the second portion 112 being buried in the seabed. The seabed has a bed surface 2, a first section 111 above the bed surface 2 and a second section 112 below the bed surface 2. As will be appreciated by those skilled in the art, the conventional pile foundations 11 are hollow cylindrical structures.

The flow disturbing structure is at least arranged on the first portion 111, i.e. at least on the first portion 111. The spoiler structure includes spoiler members 12 protruding from an outer circumferential surface of the first portion 111 in the first direction and/or spoiler holes 13 penetrating through a circumferential wall of the first portion 111 in the first direction. The first direction is orthogonal to the length direction of the pile foundation 11, for example, the first direction may be a radial direction of the pile foundation 11, or the first direction may be a horizontal direction.

That is, the spoiler structure may include the spoiler 12, and the spoiler 12 is disposed on the outer circumferential surface of the first portion 111 and protrudes from the outer circumferential surface of the first portion 111 in a direction away from the outer circumferential surface of the first portion 111. Alternatively, the spoiler structure may include the spoiler holes 13, the spoiler holes 13 penetrating the circumferential wall of the first portion 111 in the first direction, i.e., the spoiler holes 13 communicating the inner space and the outer space of the first portion 111. Still alternatively, the spoiler structure may include each of the spoiler 12 and the spoiler hole 13.

The turbulent flow structure plays a role in dissipating tidal current energy through turbulent flow, the purpose of active scour prevention is achieved, soil around the pile foundation 11 is effectively protected, and formation of a scour pit is avoided. Specifically, since the spoiler 12 protrudes from the outer peripheral surface of the first portion 111 in a direction away from the outer peripheral surface of the first portion 111, when the tidal current contacts the spoiler 12, the spoiler 12 can "break up" the tidal current, and locally change the flow rate and direction of the tidal current, so that the energy of the tidal current is dissipated to a certain extent, and a large horseshoe-shaped vortex is not generated in front of the pile foundation 11, thereby fundamentally inhibiting the formation of the horseshoe-shaped vortex. When the tidal current rushes towards the pile foundation 11 provided with the turbulence holes 13, the turbulence holes 13 penetrate through the peripheral wall of the first part 111, the tidal current can enter the inside of the first part 111 through the turbulence holes 13, the stopping resistance of the pile foundation 11 to the tidal current is reduced, the buffering effect is achieved, and the formation of horseshoe-shaped vortex is inhibited.

The offshore wind foundation 1 further comprises a mounting piece 20 and a sacrificial anode block 4. The mounting member 20 is mounted to an outer wall surface of the first portion 11, the mounting member 20 defining a mounting groove 21, the mounting member 20 being provided with an opening 22 communicating with the mounting groove 21, the mounting member 20 being electrically conductive. The sacrificial anode block 4 can be fitted into the mounting groove 21 through the opening 22 and slidably disposed along the extending direction of the mounting groove 21, and the sacrificial anode block 4 positioned in the mounting groove 21 is in contact with the groove wall surface of the mounting groove 21 and is soaked in seawater.

In order to make the technical solution of the present application easier to understand, the technical solution of the present application will be further described below by taking as an example that the length direction of the pile foundation 1 coincides with the up-down direction, wherein the up-down direction is shown in fig. 1.

As can be seen by those skilled in the art, the conventional pile foundations 1 are hollow cylindrical structures, and the sea bed surface is the interface between seawater and underwater sand. The lower end of the pile foundation 1 is buried in sand below the sea bed surface, the first part 11 of the pile foundation 1 is positioned between the sea bed surface and the sea level, the first part 11 is soaked in seawater, and the upper end of the pile foundation 1 is positioned above the sea level.

As shown in fig. 1-5, the mounting member 20 is secured to the peripheral wall of the first portion 11. The mounting member 20 has a mounting groove 21 thereon, and the mounting member 20 has an opening 22 thereon, the opening 22 being capable of communicating with the mounting groove 21. The mounting member 20 is made of an electrically conductive material, the sacrificial anode block 4 can be fitted into the mounting groove 21 through the opening 22, and the sacrificial anode block 4 can slide in the mounting groove 21.

Alternatively, the mounting member 20 includes a top plate 25 and a bottom plate 24 in the up-down direction, and a sidewall plate between the top plate 25 and the bottom plate 24. The top plate 25, bottom plate 24 and side wall plates together define the mounting slot 21.

According to the offshore wind power foundation provided by the embodiment of the invention, the pile foundation is provided with the turbulence structure, and the turbulence structure actively disturbs the tide rushing towards the pile foundation to locally change the flow speed and direction of the tide, so that the energy of the tide is dissipated to a certain extent. The turbulence structure has the effects of energy dissipation and impact reduction, inhibits the formation of horseshoe-shaped vortexes near the pile foundation, effectively protects the soil around the pile foundation and avoids the formation of scouring pits. Compared with the stone throwing protection method in the related art, the stone throwing protection method has the advantages of stronger stability, better anti-scouring effect and better reliability.

In addition, the embodiment of the invention adopts a sacrificial anode cathode protection method to protect the pile foundation, which is a method for preventing metal corrosion, namely, metal with stronger reducibility is used as a protective electrode and is connected with protected metal to form a primary battery, the metal with stronger reducibility is used as a negative electrode to generate oxidation reaction and be consumed, and the protected metal is used as a positive electrode to avoid corrosion. In this embodiment, the sacrificial anode block is a negative electrode, the pile foundation is a positive electrode, the sacrificial anode block is in contact with the wall surface of the installation groove and is soaked in seawater, and after a period of time, the sacrificial anode block is gradually corroded, so that the pile foundation is protected, and the service life of the pile foundation is prolonged. The volume of the sacrificial anode block is gradually reduced in the process of being corroded, and a worker can replace the sacrificial anode block with a new sacrificial anode block after a period of time.

In the related technology, the sacrificial anode block needs to be welded and fixed underwater, the technical difficulty is high, the operation time is long, the operation risk coefficient is large, and the cost is high.

According to the offshore wind power foundation with the anti-corrosion function, the sacrificial anode block is utilized to prevent the pile foundation from being corroded, so that the service life of the pile foundation is prolonged, the sacrificial anode block does not need to be welded during replacement, the replacement process is simple and rapid, the danger coefficient is small, and the cost is low.

The technical solution of the embodiment of the present invention will be further described below by taking the longitudinal direction of the pile foundation 11 as the vertical direction as an example, that is, the axial direction of the pile foundation 11 extends in the upward direction, and the vertical direction is shown by an arrow a in fig. 1.

In some embodiments, the spoiler structure is preferably disposed on a portion of the first portion 111 near the seabed surface 2, or at least on a portion of the first portion 111 near the seabed surface 2, so as to achieve better anti-erosion effect. The formation of the scour pit is mainly due to the fact that the horseshoe vortex moves downwards along the length direction of the pile foundation 11, and the sediment on the seabed near the pile foundation 11 is rolled up. Therefore, by providing the turbulent structure in the portion of the first section 111 close to the sea bed surface 2, it is possible to prevent the horseshoe vortices from being formed near the portion and to prevent the horseshoe vortices formed above from moving downward and reaching the sea bed surface 2.

As an example, as shown in fig. 1, a portion of the first portion 111 close to the seabed surface 2 is provided with a flow disturbing structure, and a portion of the first portion 111 above the portion is not provided with a flow disturbing structure. When the tidal current flows around the pile foundation 11 without the turbulent flow structure, a horseshoe vortex may be formed around the pile foundation 11 due to the obstruction of the pile foundation 11, and the horseshoe vortex may develop downward along the outer peripheral surface of the pile foundation 11 and strike the seabed. When the part that is provided with the vortex structure is reachd to the shape of a hoof swirl, the vortex structure can carry out initiative vortex to the swirl, the energy of dissipation swirl, the energy that makes the shape of a hoof swirl can dissipate before reacing sea bed face 2, perhaps, the vortex structure can "cut apart" the shape of a hoof swirl and be a plurality of small-size swirls, the energy of small-size swirl is less, and the velocity of flow is slower, to the impact force greatly reduced of sea bed face 2, consequently can reduce greatly and erode the possibility that the hole formed.

Optionally, the outer diameter of the first portion 111 is D, and in the length direction of the pile foundation 11, the distance between the turbulent flow structure that is farthest from the seabed surface 2 and is disposed on the first portion 111 is greater than or equal to 1.0D.

In some embodiments, the spoiler structure includes a plurality of spoilers 12, the spoilers 12 are arranged along a length direction of the pile foundation 11, and/or the spoilers 12 are arranged along a circumferential direction around the pile foundation 11. That is, the spoiler 12 may include a plurality of spoilers 12 arranged in the up-down direction, or the plurality of spoilers 12 may be arranged around the pile foundation 11, or the plurality of spoilers 12 may be arranged in the up-down direction and in the circumferential direction around the pile foundation 11.

In some embodiments, as shown in fig. 6, the spoiler structure includes a plurality of spoiler holes 13, the plurality of spoiler holes 13 are arranged along the length direction of the pile foundation 11, and/or the plurality of spoiler holes 13 are arranged along the circumferential direction around the pile foundation 11. That is, the spoiler holes 13 may include a plurality of spoiler holes 13 arranged in the up-down direction, or a plurality of spoiler holes 13 arranged around the pile foundation 11, or a plurality of spoiler holes 13 arranged in the up-down direction and in the circumferential direction around the pile foundation 11.

Further, as shown in fig. 6, the spoiler holes 13 include first spoiler holes 131 and second spoiler holes 132 opposite in the first direction. That is, the spoiler holes 13 include at least two, and the two spoiler holes 13 are opposite in the first direction. So can make the trend that gets into pile foundation 11 through first vortex hole 13 flow from second vortex hole 13 along first direction, promptly through first vortex hole 13 and the second vortex hole 13 of relative setting in the first direction, can further reduce pile foundation 11 to the backstop resistance of trend, perhaps say so, can further make the trend slow down the impact effect to pile foundation 11 to restrain the formation of horseshoe vortex better, the scour protection ability of reinforcing marine wind power basis 1.

In some embodiments, as shown in fig. 7 and 8, the turbulator structure includes a plurality of turbulators 12 and a plurality of turbulation holes 13. The spoiler 12 and the spoiler holes 13 are alternately distributed on the outer circumferential surface of the first portion 111. The spoiler 12 and the spoiler holes 13 are alternately arranged, in which case at least one spoiler hole 13 is located between two spoiler parts 12, or at least one spoiler part 12 is located between two spoiler holes 13. The turbulence effect of the turbulence piece 12 and the turbulence effect of the turbulence holes 13 are superposed in the above way, and the energy dissipation and impact reduction effects of the turbulence structure are further enhanced, so that the anti-scouring capability of the offshore wind power foundation 1 is enhanced.

Alternatively, the spoiler 12 and the spoiler holes 13 are alternately arranged in the up-down direction. The spoiler 12 and the spoiler holes 13 are alternately arranged in an axial direction around the first portion 111.

In some embodiments, spoiler 12 includes one or more of spoiler spike 121, spoiler strip 122, and spoiler mesh 123.

The turbulence pins 121 are arranged on the outer peripheral surface of the first portion 111 at intervals, and the ratio of the size of the turbulence pins 121 in the length direction of the pile foundation 11 to the size of the turbulence pins 121 in the circumferential direction around the pile foundation 11 is greater than or equal to 1/2 and less than or equal to 2.

As shown in fig. 1 and 2, the plurality of turbulence pins 121 are arranged at intervals in the length direction of the pile foundation 11 and/or in the circumferential direction around the pile foundation 11. Optionally, the interval between the adjacent spoilers 121 is equal to or greater than 0.25D and equal to or less than 1.0D.

As shown in fig. 3 and 4, the spoiler 122 has a strip-shaped structure, and the extending direction of the spoiler 122 is parallel to the outer circumferential surface of the first portion 111. Optionally, the ratio of the length to the width of spoiler 122 is equal to or greater than 5. The extending length of the spoiler strips 122 is greater than or equal to 0.1D.

As shown in fig. 5, the spoiler 123 is a mesh structure covering at least a portion of the outer circumferential surface of the first portion 111. Optionally, the area of the outer peripheral surface of the first portion 111 covered by the spoiler 123 is greater than or equal to 1.0 pi D². The area of the outer peripheral surface of the first portion 111 covered by the spoiler 123 is an area of a figure surrounded by an outer contour of a projection of the spoiler 123 on the outer peripheral surface of the first portion 111.

In some embodiments, as shown in fig. 8, the spoiler 12 includes a plurality of the spoiler pins 121, the spoiler strips 122, and the spoiler mesh 123, and the plurality of types of the spoiler 12 are alternately distributed on the outer circumferential surface of the first portion 111. The turbulence pieces 12 of various types are distributed alternately, so that the irregularity of the turbulence structure arranged on the first part 111 can be increased, the offshore wind power foundation 1 can cope with the tides of various energy gradients and horseshoe vortices, and the adaptability of the offshore wind power foundation 1 is enhanced. Moreover, the plurality of types of turbulence pieces 12 are alternately distributed, so that turbulence effects of the turbulence pieces 12 of different types can be mutually superposed, the energy dissipation and impact reduction effects of the turbulence structure are further enhanced, and the anti-scouring capability of the offshore wind power foundation 1 is enhanced.

Alternatively, a plurality of types of spoilers 12 are alternately arranged in the up-down direction. The spoiler types 12 are alternately arranged in the axial direction around the first portion 111.

Further, in some embodiments, as shown in fig. 7, the spoiler structure includes a plurality of spoilers 12 and a plurality of spoiler holes 13, and the spoilers 12 include a plurality of spoiler pins 121, spoiler strips 122, and spoiler meshes 123. The turbulence holes 13 and the turbulence pieces 12 of various types are alternately distributed on the outer peripheral surface of the first part 111, so that the anti-scouring capability of the offshore wind power foundation 1 is further enhanced.

The spoiler 12 protrudes from the outer circumferential surface of the first portion 111 in the first direction, and the size of the spoiler 12 in the first direction is defined as the height of the spoiler 12, and in some embodiments, the spoiler 12 arranged along the length direction of the pile foundation 11 includes a plurality of different heights, and/or the spoiler 12 arranged along the circumference around the pile foundation 11 includes a plurality of different heights.

That is, the spoiler 12 arranged in the length direction of the pile foundation 11 may have different heights, or the spoiler 12 arranged in the circumferential direction around the pile foundation 11 may have different heights, or the spoiler 12 arranged in the length direction of the pile foundation 11 may have different heights, and the spoiler 12 arranged in the circumferential direction around the pile foundation 11 may have different heights. So set up the irregularity that can increase the vortex structure that sets up on the first portion 111, make the vortex structure when facing trend and horseshoe vortex, can break up the law of flow of trend and horseshoe vortex better and break up in disorder, the bigger degree changes rivers flow direction and velocity of flow upwards, the scour protection ability of reinforcing marine wind power basis 1 to make marine wind power basis 1 can deal with the trend and the horseshoe vortex of multiple energy gradient, the adaptability of marine wind power basis 1 has been strengthened.

Optionally, in some embodiments, the spoiler 12 includes a plurality of spoilers 12, and the plurality of spoilers 12 are arranged at intervals in the length direction of the pile foundation 11 and at intervals in the circumferential direction around the pile foundation 11. Wherein at least two of the plurality of spoilers 12 have different heights.

Further optionally, the height of two adjacent spoiler 12 is different in the length direction of pile foundation 11, and the height of two adjacent spoiler 12 is different in the axial direction around pile foundation 11, that is, a plurality of spoiler 12 are arranged in a staggered manner, so that the irregularity of the spoiler structure arranged on first portion 111 is further increased, and the energy dissipation and impact reduction effects of the spoiler structure and the anti-scouring capability of offshore wind power foundation 1 are enhanced.

In some embodiments, the spoiler structure comprises a plurality of two spoiler structures that are adjacent in a length direction of the first portion 111 and/or two spoiler structures that are adjacent in a circumferential direction around the first portion 111.

That is, two spoiler structures adjacent in the length direction of the first portion 111 are staggered. Alternatively, two spoiler structures adjacent in the circumferential direction around the first portion 111 are staggered. Alternatively, two spoiler structures adjacent in the length direction of the first portion 111 are staggered and two spoiler structures adjacent in the circumferential direction around the first portion 111 are staggered. So set up the irregularity that has increased the vortex structure that sets up on the first portion 111, strengthened the energy dissipation of vortex structure and subtracted towards effect and the scour protection ability on marine wind power basis 1.

During the actual use of the offshore wind power foundation 1, the closer the position on the first section 111 to the sea bed surface 2 is, the greater the tidal current impact is, and the greater the possibility of generating horseshoe vortices is. Therefore, as shown in fig. 2, in some embodiments, the density of the turbulent flow structure is increased toward the direction close to the sea bed surface 2, so as to better cope with the actual situation and enhance the anti-scouring capability and practicability of the offshore wind power foundation 1.

Furthermore, in many sea areas, the direction of the current is not uniform, for example, in some sea areas, the current flows east and west year by year, and the current flows north and south rarely occur. When the pile foundations 11 are subjected to the tide of the flow of things, the sea beds on the east and west sides of the pile foundations 11 are most likely to produce large scour pits, while the sea beds on the south and north sides produce smaller scour pits.

In order to enable the offshore wind power foundation 1 to have strong enough anti-scouring capacity, the manufacturing cost is reduced, and the manufacturing difficulty is reduced. In some embodiments, the outer periphery of the first portion 111 includes a front side facing the direction of the flow of the power, a back side opposite the front side, and two side surfaces, such that the density of the spoiler structures distributed over the front and back sides is greater than the density of the spoiler structures distributed over the two side surfaces. That is to say, the turbulence structures can be densely arranged on the front face of the first part 111 facing the tidal current direction and the back face opposite to the front face, and a small number of turbulence structures are arranged on the two sides of the first part 111, so that the offshore wind power foundation 1 can have strong anti-scouring capability, the manufacturing cost can be reduced, and the manufacturing difficulty can be reduced.

Alternatively, the density of the spoiler structures distributed on the front side may be made greater than the density of the spoiler structures distributed on the back side.

In some embodiments, the flow perturbation structure is also disposed on the second portion 112, i.e., the second portion 112 is also disposed with the flow perturbation structure. Optionally, the flow perturbation structure on the second portion 112 is positioned close to the surface 2 of the ocean floor in the second portion 112. Even form on the near sea bed face 2 of marine wind power basis 1 and erode the hole, the formation that erodes the hole makes the second part 112 that originally lies in below the sea bed face 2 expose, and the vortex structure that sets up on the second part 112 can reduce effectively and erode the effect, prevents to erode the hole and continues downwardly extending, has strengthened the scour protection performance of marine wind power basis 1.

In some embodiments, the pile foundation 11 is one, i.e. the offshore wind power foundation 1 is an offshore wind power single pile foundation.

In other embodiments, the pile foundations 11 are multiple, that is, the offshore wind power foundation 1 is an offshore wind power multi-pile foundation, and the multiple pile foundations 11 are arranged at intervals.

An embodiment of the present invention will be described below by taking a spoiler structure as the spoiler hole 13 as an example.

As shown in fig. 6, the offshore wind power foundation having a spoiler hole according to the present invention includes a pile foundation 11 and a spoiler hole 13.

The pile foundation 111 comprises a first section 111 and a second section 112 connected to each other in its length direction, the second section 112 being buried in the seabed, the seabed having a seabed surface, the first section 111 being located above the seabed surface.

As shown in fig. 6, the pile foundation 11 is divided into a first portion 111 and a second portion 112 in the vertical direction, the pile foundation 11 is buried downward into the seabed, the first portion 111 is located above the seabed surface of the pile foundation 11, and the second portion 112 is buried into the seabed under the seabed surface.

The spoiler holes 13 are at least formed in the first portion 111, the spoiler holes 13 penetrate through the peripheral wall of the first portion 111 in the first direction, the first direction is orthogonal to the length direction of the pile foundation 11, the spoiler holes 13 comprise a plurality of spoiler holes, the spoiler holes 13 are arranged in the length direction of the pile foundation 11 and/or in the circumferential direction around the pile foundation 11 at intervals, the outer diameter of the first portion 111 is D, and the interval between the spoiler holes 13 is larger than or equal to 0.25D and smaller than or equal to 1.0D.

As shown in fig. 6, at least the first portion 111 is provided with a spoiler hole 13, the spoiler hole 13 is provided in the circumferential wall of the first portion 1 and communicates the inner space and the outer space of the first portion 111, and the spoiler hole 13 extends in a first direction orthogonal to the longitudinal direction of the pile base 11, in other words, the first direction may be a radial direction of the pile base 11, or the first direction may be a horizontal direction.

When the tidal current rushes towards the pile foundation 11 provided with the turbulence holes 13, the turbulence holes 13 penetrate through the peripheral wall of the first part 111, the tidal current can enter the inside of the first part 111 through the turbulence holes 13, the stopping resistance of the pile foundation 11 to the tidal current is reduced, the buffering effect is achieved, and the formation of horseshoe-shaped vortex is inhibited. In order to improve the effects of energy dissipation and impact reduction, a plurality of flow disturbing holes 13 are formed in the peripheral wall of the first part 1, the flow disturbing holes 13 are arranged at intervals in the vertical direction, or the flow disturbing holes 13 are arranged at intervals in the circumferential direction around the pile foundation 11, or the flow disturbing holes 13 are arranged in the vertical direction and in the circumferential direction around the pile foundation 11, and the distance between every two adjacent flow disturbing holes 13 is greater than or equal to 0.25D and smaller than or equal to 1.0D. So that the rapid flow or the main flow in the seawater enters the turbulent flow hole 13 and then is dissipated and reduced as soon as possible to be converted into uniform slow flow, and the device has the characteristics of simplicity and high efficiency.

According to the offshore wind power foundation with the turbulence holes, the turbulence holes 13 are formed in the pile foundation 11, so that a rapid flow or a main flow in seawater is converted into a uniform slow flow, the impact of the seawater on the surface of the pile foundation is reduced, the formation of a horseshoe vortex is inhibited, and the offshore wind power foundation with the turbulence holes has good erosion resistance.

In some embodiments, two adjacent baffle holes 13 in the length direction of the pile foundation 11 are staggered, and the distance between the two adjacent baffle holes 13 in the circumferential direction around the pile foundation 11 is 0.25D to 1.0D, and/or the distance between the two adjacent baffle holes 13 in the circumferential direction around the pile foundation 11 is staggered, and the distance between the two adjacent baffle holes 13 in the length direction of the pile foundation 11 is 0.2D to 0.8D.

In other words, the spoiler holes 13 arranged along the length direction of the pile foundation 11 may have different circumferential arrangement positions, the interval between two adjacent spoiler holes 13 in the circumferential direction around the pile foundation 11 is 0.25D to 1.0D, or the turbulent flow holes 13 arranged along the circumferential direction around the pile foundation 11 may have different distances from the sea level in the up-down direction, and the distance between two adjacent turbulent flow holes 13 in the up-down direction is 0.2D to 0.8D, or the turbulent flow holes 13 arranged along the length direction of the pile foundation 11 may have different circumferential arrangement positions, and the distance between two adjacent turbulent flow holes 13 in the circumferential direction around the pile foundation 11 is 0.25D to 1.0D, moreover, the turbulent flow holes 13 arranged along the circumferential direction around the pile foundation 11 have different distances from the sea level in the up-down direction, and the distance between two adjacent turbulent flow holes 13 in the up-down direction is 0.2D to 0.8D. The irregularity of the turbulent flow holes 13 arranged on the first part 111 can be increased by the arrangement, so that the turbulent flow holes 13 can better break up and disturb the flow rule of the tidal flow and the horseshoe vortex when facing the tidal flow and the horseshoe vortex, the flow direction and the flow speed of the water flow are changed to a greater extent, the anti-scouring capability of the offshore wind power foundation is enhanced, the offshore wind power foundation can deal with the tidal flow with various energy gradients and the horseshoe vortex, and the adaptability of the offshore wind power foundation is enhanced.

In some embodiments, the plurality of baffle holes 13 are divided into a plurality of rows, each baffle hole 13 comprises a plurality of baffle holes 13 arranged at equal intervals along the circumferential direction, the plurality of rows of baffle holes 13 are arranged along the length direction, and two adjacent baffle holes 13 are staggered along the length direction.

As an example, a plurality of baffle holes 13 are arranged on the pile foundation 11 at intervals in the up-down direction, each baffle hole 13 comprises a plurality of baffle holes 13, and the number of baffle holes 13 in each baffle hole 13 is equal. Each drain hole 13 has a different distance from the sea level in the up-down direction, and two adjacent drain holes 13 are staggered from each other in the up-down direction, and the plurality of drain holes 13 in each drain hole 13 are arranged at equal intervals in the circumferential direction. At least a part of the multiple drain holes 13 are aligned in the up-down direction. As shown in fig. 6, four drain holes 13 are arranged at intervals in the up-down direction on the pile foundation 11, and the first drain hole 13 and the third drain hole 13 are aligned in the up-down direction. The alignment of the first drain turbulence hole 13 and the third drain turbulence hole 13 in the up-down direction specifically means: the plurality of baffle holes 13 in the first baffle hole 13 and the plurality of baffle holes 13 in the third baffle hole 13 are opposite to each other in a one-to-one correspondence in the up-down direction.

In some embodiments, the density of turbulator holes 13 increases in a direction closer to the surface of the ocean floor.

During the actual use of the offshore wind power foundation, the closer the position on the first part 111 to the surface of the sea bed is, the greater the tidal current impact is, and the greater the possibility of generating horseshoe vortices is. Therefore, in some embodiments, the density of the spoiler holes 13 is increased towards the direction close to the surface of the sea bed to better cope with the actual situation, preferably, when the linear distance between the adjacent spoiler holes 13 is smaller than 0.2D, the generation of horseshoe-shaped vortexes can be effectively reduced, and the linear distance between the adjacent spoiler holes 13 is gradually reduced towards the direction close to the surface of the sea bed, so that the anti-scouring capability and the practicability of the marine wind power foundation can be enhanced.

In some embodiments, the outer circumferential surface of the first portion 111 includes a front surface facing the tidal current direction, a back surface opposite to the front surface, and two side surfaces, and the density of the spoiler holes 13 distributed on the front surface and the back surface is greater than the density of the spoiler holes 13 distributed on the two side surfaces.

The tidal current direction generated in the flowing process of the seawater is uneven and is influenced by monsoon climate and earth rotation, the tidal current in some sea areas flows like things and things throughout the year, and the tidal current flowing in the north and south rarely occurs. The pile foundations 11 arranged in these sea areas mainly bear the flow of things, the sea beds on the east and west sides of the pile foundations 11 are most likely to generate large erosion pits, and the sea beds on the south and north sides generate small erosion pits, so that the spoiler holes 13 can be densely arranged on the front surface of the first part 111, which is usually facing the direction of the flow of water, and the back surface opposite to the front surface, while a small number of the spoiler holes 13 are arranged on both sides of the first part 111, preferably, the distance between the adjacent spoiler holes 13 on the front surface and the back surface of the outer peripheral surface of the first part 111 is 0.25D to 0.5D, and the distance between the adjacent spoiler holes 13 on both sides of the first part 111 is 0.5D to 1.0D, so that the offshore wind power foundation can have strong erosion prevention capability, and the manufacturing cost thereof can be reduced, and the manufacturing difficulty can be reduced.

In some embodiments, the turbulator holes 13 include a first turbulator hole 131 and a second turbulator hole 132 that are diametrically opposed in the first portion 111.

The first turbulence hole 131 and the second turbulence hole 132 which are opposite to each other are arranged in the radial direction of the pile foundation 11, so that the tide which enters the pile foundation through the first turbulence hole 131 can flow out from the second turbulence hole 132 along the radial direction of the pile foundation 11, the stop resistance of the pile foundation 11 to the tide can be further reduced, or the tide can be further reduced to have the impact effect on the pile foundation 11, the formation of a horseshoe-shaped vortex can be better inhibited, and the anti-scouring capability of the offshore wind power foundation is enhanced.

In some embodiments, the turbulator holes 13 are also provided on the second portion 112, i.e., the second portion 112 is also provided with turbulator holes 13. Optionally, the turbulating holes 13 on the second portion 112 are disposed at a position of the second portion 112 near the sea floor surface, and preferably, the turbulating holes 13 on the second portion 112 farthest from the sea floor surface are at a distance of 0.5D to 1.0D from the sea floor surface. When the scouring pit is formed on the surface of the sea bed near the offshore wind power foundation, the second part 112 originally positioned below the surface of the sea bed is exposed due to the formation of the scouring pit, and the turbulent flow holes 13 arranged on the second part 112 can effectively reduce the scouring effect, prevent the scouring pit from continuing to extend downwards and enhance the anti-scouring performance of the offshore wind power foundation.

In some embodiments, a bead ring 3 is disposed on an outer circumferential surface of the first portion 111 at a corresponding position of the spoiler hole 13, the bead ring 3 is disposed around the spoiler hole 13, and the bead ring 3 protrudes from the outer circumferential surface of the first portion 111 in the first direction.

Erosion corrosion of the pile foundation 11 by seawater starts from a position where the turbulent flow hole 13 penetrates through the circumferential wall of the first part 111, in order to slow down corrosion of the seawater, the reinforcing rib ring 3 is arranged on the outer circumferential surface of the first part 111, the reinforcing rib ring 3 surrounds the turbulent flow hole 13 and protrudes outwards along the first direction so as to enhance erosion resistance of the offshore wind power foundation, the size of the outward protrusion of the reinforcing rib ring 3 from the outer circumferential surface of the first part 111 is the height of the reinforcing rib ring 3, optionally, the height of the reinforcing rib ring 3 is 100mm to 500mm, and the radial thickness of the turbulent flow hole 13 is 50mm to 120mm, so that energy dissipation and impact reduction effects of the pile foundation 11 can be enhanced, and the service life of the pile foundation 11 can be prolonged.

The shape of the turbulent flow hole 13 on the basis of the offshore wind power influences the energy dissipation and impact reduction effects of the pile foundation 11, in some embodiments, the upper part and the lower part of the turbulent flow hole 13 are semicircular, the middle part of the turbulent flow hole is in a square manhole shape, the aperture of a short shaft of the turbulent flow hole 13 is 300mm to 1000mm, and the length-width ratio is 1.5 to 2.5.

In other embodiments, the shape of the turbulent flow holes 13 is elliptical, the structural strength of the pile foundation 11 provided with the elliptical turbulent flow holes 13 is superior to that of the pile foundation 11 provided with the man-hole-shaped turbulent flow holes 13, and when the aperture of the minor axis of the elliptical turbulent flow holes 13 is 0.05D-0.1D, the energy dissipation and impact reduction effects of the pile foundation 11 and the anti-scouring capability of the offshore wind power foundation can be further enhanced while the structural performance of the pile foundation 11 is not affected. Preferably, when the diameter of the pile foundation 11 is 6m, the oval turbulent flow hole 13 with the minor axis aperture of 420mm is arranged on the pile foundation 11, and the energy dissipation and impact reduction effects of the pile foundation 11 and the anti-scouring capability of the offshore wind power foundation are optimal.

In some embodiments, the mounting groove 21 extends along the length of the pile foundation 1, and the sacrificial anode block 4 abuts against the groove bottom surface of the mounting groove 21.

As shown in fig. 9 and 10, the mounting groove 21 extends in the up-down direction, the bottom surface of the mounting groove 21 is the upper surface of the bottom plate 24 of the mounting member 20, and the sacrificial anode block 4 is in contact with the bottom surface of the mounting groove 21, whereby the sacrificial anode block 4 can be electrically connected to the pile foundation 1, thereby preventing the pile foundation 1 from being corroded.

In some embodiments, the opening 22 is disposed at the top end of the mounting member 20 and is opposite to the bottom surface of the pile foundation 1 in the length direction, the offshore wind power foundation further includes a pressing plate 5 and a connecting wire 6, the pressing plate 5 is disposed in the installation groove 21 and can be detachably disposed from the installation groove 21, when the pressing plate 5 is disposed in the installation groove 21, the pressing plate 5 stops against the top end of the sacrificial anode block 4; the connecting wire 6 is a conductive flexible wire, one end of the connecting wire 6 is connected with the pressing plate 5, and the other end of the connecting wire 6 is connected with any one of the mounting member 20 and the pile foundation 1.

As shown in fig. 9 and 13, an opening 22 is provided at the upper end of the mounting member 20, and a pressing plate 5 is provided on the mounting member 20, and the pressing plate 5 can be electrically connected to the pile foundation 1 through the connecting wire 6. When the sacrificial anode block 4 is installed, the sacrificial anode block 4 is firstly placed into the installation groove 21 from the opening 22 at the upper end, then the pressing plate 5 is placed into the installation groove, and under the action of gravity, the pressing plate 5 is tightly contacted with the upper end of the sacrificial anode block 4 (the top end of the sacrificial anode block 4), so that the electric connection between the sacrificial anode block 4 and the pile foundation 1 is strengthened, and the pile foundation 1 is protected. The volume of the sacrificial anode block 4 is gradually reduced due to corrosion, the pressing plate 5 gradually slides towards the lower end of the mounting groove 21 along with the sacrificial anode block 4, the connecting lead 6 always slides downwards along with the pressing plate 5 in the whole process, and the pressing plate 5 always contacts with the upper end of the sacrificial anode block 4.

Therefore, the pressing plate 5 can be always connected with the sacrificial anode block 4, so that the electric connection between the sacrificial anode block 4 and the pile foundation 1 is enhanced, and the pile foundation 1 is better protected. In addition, the connecting lead 6 is connected with the pressing plate 5, so that the pressing plate 5 can be prevented from being lost.

In some embodiments, the side wall of the mounting member 20 is provided with a window 230 extending along the extending direction of the mounting groove 21, the window 230 is communicated with the mounting groove 21, and the width of the window 230 is smaller than the width of the sacrificial anode block 4.

As shown in fig. 13, a window 230 is provided on the side plate 23 of the mounting member 20, the window 230 extends along the extending direction of the mounting groove 21, and the window 230 extends from the opening 22 of the mounting member 20 to the bottom plate 24 of the mounting member 20. The width of the window 230 is the dimension of the window 230 in the direction perpendicular to the extending direction thereof, and the width of the window 230 is smaller than the width of the sacrificial anode block 4, preventing the sacrificial anode block 4 from escaping from the window 230. Therefore, the window 230 can facilitate the staff to observe the position of the sacrificial anode block 4, and can increase the contact area of the sacrificial anode block 4 and the seawater to better protect the pile foundation 1.

Alternatively, the viewing window 230 may be located on the side panel 23 facing the worker as shown in FIG. 13, or the viewing window 230 may be located on the top panel 25 of the mounting member 20 as shown in FIG. 11.

It will be appreciated that in other embodiments, the shape of the viewing window 230 may be a rectangle, or a plurality of rectangles spaced apart, or other simple geometric figures, such as a triangle, a circle, etc.

In some embodiments, the top end of the mount 20 extends from the sea level, and the opening 22 is located above the sea level. As shown in fig. 10, the upper end of the mounting member 20 is located above sea level and the lower end of the mounting member 20 is located in sea water. Therefore, the sacrificial anode block 4 can be directly replaced above the sea level by a worker without submerging the sacrificial anode block into the water for replacement, the replacement process is simple and rapid, the danger coefficient is small, and the cost is low.

In some embodiments, the mounting member 20 is ring-shaped, the mounting member 20 is fitted over the first portion 11, the mounting member 20 defines a mounting groove 21 extending along the circumference of the pile foundation 1, the mounting groove 21 surrounds at least a part of the first portion 11 in the circumference of the pile foundation 1, and the sacrificial anode block 4 abuts against a groove bottom surface of the mounting groove 21.

As shown in fig. 12, the mounting member 20 is substantially ring-shaped, the mounting member 20 surrounds the outer periphery of the first part 11, the mounting member 20 has a mounting groove 21 extending along the circumferential direction of the pile foundation 1, the mounting groove 21 surrounds the entire outer periphery of the pile foundation 1, or the mounting member 20 is provided with the mounting groove 21 at a partial position. The sacrificial anode block 4 abuts against the bottom surface of the mounting groove 21, and therefore the sacrificial anode block 4 can be electrically connected with the pile foundation 1, and the pile foundation 1 is prevented from being corroded.

In some embodiments, the mounting member 20 comprises a top plate 25, the opening 22 being provided in the top plate 25, the top plate 25 resting against the top end of the sacrificial anode block 4.

As shown in fig. 12, the top plate 25 is the uppermost plate of the mounting member 20, and an opening 22 is provided in the top plate 25, so that the top plate 25 can contact the upper end surface of the sacrificial anode block 4, whereby the sacrificial anode block 4 can be restrained in the mounting groove 21 by the top plate 25, and the sacrificial anode block 4 is prevented from coming out of the mounting groove 21.

In some embodiments, the mounting groove 21 extends in a horizontal direction, the mounting member 20 has first and second ends opposite in the extending direction of the mounting groove 21, and the opening 22 is provided at least one of the first and second ends.

As shown in fig. 11, the mounting groove 21 extends in a horizontal direction, and the mounting member 20 has a first end provided with an opening 22 or a second end provided with an opening 22, or both the first end and the second end are provided with an opening 22, thereby facilitating the mounting of the sacrificial anode block 4.

In some embodiments, the mounting member 20 comprises a plurality of mounting members 20, and the plurality of mounting members 20 are arranged at intervals along the length direction of the pile foundation 1, and/or the plurality of mounting members 20 are arranged at intervals along the circumference direction of the pile foundation 1.

As shown in fig. 13, a plurality of mounting members 20 are provided at intervals on the outer wall surface of the first portion 11, and the mounting members 20 are arranged in various ways, for example:

first, two installation pieces 20 adjacent in the up-down direction are arranged at intervals, in other words, an interval is provided between two installation pieces 20 adjacent in the up-down direction, and there is no interval between two installation pieces 20 adjacent in the circumferential direction of the pile foundation 1.

Secondly, two mounting pieces 20 adjacent in the circumferential direction of the pile foundation 1 are arranged at intervals, in other words, there is an interval between two mounting pieces 20 adjacent in the circumferential direction of the pile foundation 1, and there is no interval between two mounting pieces 20 adjacent in the up-down direction.

Thirdly, two installation pieces 20 adjacent in the up-down direction are arranged at intervals, and two installation pieces 20 adjacent in the circumferential direction of the pile foundation 1 are arranged at intervals.

Thus, the design of the mount 20 meets the diverse requirements.

In some embodiments, the sacrificial anode block 4 is composed of a plurality of sub sacrificial anode blocks 40, the plurality of sub sacrificial anode blocks 40 being arranged along the extending direction of the mounting groove 21.

As shown in fig. 14, a plurality of sub sacrificial anode blocks 40 are provided in one mounting groove 21, and the plurality of sub sacrificial anode blocks 40 are sequentially arranged in the mounting groove 21. Therefore, the sacrificial anode block 4 is made into a plurality of blocks with small volume, and is convenient to carry and install.

The sacrificial anode block 4 has a shape that generally conforms to the shape of the cavity defined by the mounting groove 21. For example, in some embodiments, the cavity defined by the mounting slot 21 is a cuboid, cylinder, or the like, and the sacrificial anode block 4 is shaped as a cuboid, cylinder, or the like corresponding to the cavity defined by the mounting slot 21.

Optionally, a sacrificial anode block 4 is arranged in one mounting groove 21, and the volume of the sacrificial anode block 4 is equivalent to that of the mounting groove 21.

Optionally, the material of the sub sacrificial anode blocks 40 is zinc or aluminum, etc., the interval between two adjacent sub sacrificial anode blocks 40 is not required, and two adjacent sub sacrificial anode blocks 40 may be arranged at an interval or close to each other.

In some embodiments, the offshore wind power foundation with corrosion prevention function further includes a mounting post 30, one end of the mounting post 30 is connected with the pile foundation 1, and the other end of the mounting post 30 is connected with the mounting member 20. Therefore, the mounting piece 20 is fixed on the periphery of the pile foundation 1 through the mounting column 30, and the structure is stable and convenient to process.

In some embodiments, the mounting post 30 has a plurality, and the plurality of mounting posts 30 are spaced apart.

Alternatively, a plurality of mounting posts 30 are spaced at the same level.

Alternatively, a plurality of mounting posts 30 are arranged in the up-down direction.

In some embodiments, two mounts 20 adjacent in the length direction are spaced apart by 0.01D-5D, and two mounts 20 adjacent in the circumferential direction are spaced apart by 0.1D-1.07D.

The distance between the center positions of two mounts 20 adjacent in the up-down direction is 0.01D to 5D. For example, the pitch between two mounts 20 adjacent in the up-down direction may be 0.01D, 1.0D, 5.0D, or the like.

The distance between two adjacent mounting pieces 20 in the circumferential direction of the pile foundation 1 is 0.1D-1.07D. For example, the pitch of two adjacent mounting pieces 20 in the circumferential direction of the pile foundation 1 is 0.1D, 0.2D, 0.5D, 0.8D, 1.05D, 1.07D, etc. This arrangement can increase the irregularity in the arrangement of the mounting pieces 20, protect the outer wall surface of the first portion 11 to the maximum, and improve the anti-corrosion effect of the pile foundation 1.

Further, the outer circumferential contour of the cross section of at least a part of the pile foundation 11 is elliptical. As known to those skilled in the art, the conventional pile foundations 11 are hollow cylindrical structures, and the sea bed surface is the interface between seawater and sand on the water bottom. A part of the pile foundations 11 is located in the sea water above the surface of the sea bed, and another part of the pile foundations 11 is buried in the sand below the surface of the sea bed, so that the pile foundations 11 are fixed at sea.

The tower is mounted on top of the pile foundation 11. Specifically, as shown in FIG. 15, a tower is provided above the foundation piles. In this embodiment, the offshore wind power foundation 1 is an offshore wind power single pile foundation.

The fan is installed on the top of a tower section of thick bamboo, and the fan includes the impeller, and the extending direction of the rotatory central line of impeller is the same with the extending direction of oval major axis. Specifically, the extending direction of the rotation center line of the impeller is defined as the main wind direction, and the long axis of the pile foundation 11 extends in the main wind direction.

According to the offshore wind power foundation 1 provided by the embodiment of the invention, the peripheral outline of at least one part of the cross section of the pile foundation 11 is elliptical, and the elliptical cross section has an off-streamline shape, so that the impact action of fluid on the surface of the pile foundation can be more effectively reduced than that of a common circular cross section, the elliptical pile foundation 11 has stronger stability, can bear stronger impact force of sea wind, prevents the pile foundation 11 from inclining or falling under the impact force of the sea wind, and prolongs the service life of the offshore wind power foundation 1.

According to the offshore wind power foundation 1 provided by the embodiment of the invention, the extending direction of the rotating center line of the impeller is the same as the extending direction of the long axis of the ellipse, so that the long axis of the ellipse is consistent with the main wind direction, the impact of the main wind direction on the pile foundation 11 can be reduced, and the stability of the pile foundation 11 is ensured.

In some embodiments, the pile foundation 11 includes a third portion 113 and a fourth portion 114 connected in the length direction (the up-down direction as shown in fig. 15), the third portion 113 is located above the fourth portion 114, the central axes of the third portion 113 and the fourth portion 114 are on the same straight line, the outer peripheral contour of the cross section of the fourth portion 114 is an ellipse, the shape of the bottom end of the third portion 113 is matched with the shape of the top end of the fourth portion 114, and the outer peripheral contour of the top end of the third portion 113 is a circle.

Specifically, as shown in fig. 15 to 20, in the third portion 113 and the fourth portion 114 connected in the up-down direction of the pile foundation 11, the cross-sectional area of the third portion 113 is gradually reduced from bottom to top, the upper end surface of the third portion 113 is a circular surface, and the fourth portion 114 is an elliptic cylinder with a constant cross-section, so that not only is the stability of the pile foundation 11 ensured, but also convenience is provided for the installation of a fan, and the arrangement of the offshore wind power foundation 1 is more reasonable.

In some embodiments, as shown in fig. 15 to 16, the pile foundation 11 is provided with lifting lugs 15 on the outer peripheral side, and the lifting lugs 15 are arranged in a front-rear direction at intervals, so that the pile foundation 11 can be mounted on the seabed by the lifting lugs 15.

In some embodiments, the outer diameter of the top end of the third portion 113 is less than or equal to the short outer diameter of the bottom end of the third portion 113. Specifically, as shown in fig. 15 to 17, the upper end surface of the third portion 113 is circular and the outer diameter thereof is smaller than or equal to the short axis of the elliptical surface of the lower end surface of the third portion 113, so that the cross section of the third portion 113 is elliptical from bottom to top, and the long axis of the ellipse is gradually reduced, thereby reducing the difficulty in processing and manufacturing the third portion 113.

In some embodiments, offshore wind farm 1 further comprises a flange 14, flange 14 is connected to the top end of third section 113, and the tower is connected to third section 113 via flange 14. In particular, as shown in FIGS. 15-16 and 6, the third section 113 is provided with a flange 14 at an upper end thereof, and the tower is attached to the flange 14 by fasteners, thereby mounting the tower to the third section 113.

In some embodiments, the length of the third portion 113 is 5m to 30m, the length of the fourth portion 114 is 10m to 150m, and specifically, the length of the third portion 113 in the up-down direction is 5m to 30m, for example: the length of the third portion 113 may be any one of 5m, 10m, 15m, 20m, 25m, and 30m, and the length of the fourth portion 114 in the up-down direction is 10m to 150m, for example: the fourth portion 114 has a length of any one of 10m, 20m, 30m, 40m, 50m, 60m, 70m, 80m, 90m, 100m, 110m, 120m, 130m, 140m, and 150 m. The fourth portion 114 can be stably arranged under the sea bed surface in a penetrating mode, and therefore the situation that the pile foundation 11 is installed unstably due to the fact that the fourth portion 114 is too short is avoided.

In some embodiments, the ratio of the length of the major axis of the ellipse to the length of the minor axis is greater than 1 and less than or equal to 5.

In some embodiments, the length of the major axis of the ellipse is 5m-50m, and in particular, the length of the major axis of the ellipse can be selected to be any value of 5m, 10m, 15m, 20m, 35m, 30m, 35m, 40m, 45m, and 50 m.

In some embodiments, the length of the minor axis of the ellipse is 1m-50 m-in particular, the length of the major axis of the ellipse can be chosen: specifically, the length of the minor axis of the ellipse may be any one of 1m, 5m, 10m, 15m, 20m, 35m, 30m, 35m, 40m, 45m, and 50 m.

In other embodiments, the offshore wind power foundation 1 of the embodiment of the present invention is an offshore wind power multi-pile foundation, and includes a plurality of pile foundations 11, a cap 7, and a wind turbine (not shown in the figure).

A plurality of pile foundations 11 are arranged at intervals. As known to those skilled in the art, the conventional pile foundations 11 are hollow cylindrical structures, and the sea bed surface is the interface between seawater and sand on the water bottom. A part of the pile foundations 11 is located in the sea water above the surface of the sea bed, and another part of the pile foundations 11 is buried in the sand below the surface of the sea bed, so that the pile foundations 11 are fixed at sea.

The top end of each pile foundation 11 is connected with the bottom of the bearing platform 7, and the centers of the bottom ends of the pile foundations 11 are positioned on the same horizontal plane and distributed along the circumference of the first ellipse 91. Specifically, as shown in fig. 21, the plurality of pile foundations 11 are provided at intervals on the lower end surface of the pile foundation 7 along the circumferential direction of the pile foundation 7, the upper ends of the plurality of pile foundations 11 are connected to the pile foundation 7, and the lower ends of the plurality of pile foundations 11 are arranged at intervals along the center of the surface in the direction of the first ellipse 91.

The fan is installed on the top of the bearing platform 7, the fan comprises an impeller, the extending direction of the rotating center line of the impeller is a first direction, and the long axis of the first ellipse 91 extends along the first direction. Specifically, the first direction is defined as a main wind direction, the rotation center line direction of the impeller extends toward the main wind direction, and the major axis of the first ellipse 91 extends in the wind direction of the main wind direction.

According to the offshore wind power foundation 1 provided by the embodiment of the invention, the plurality of pile foundations 11 are arranged along the direction of the first ellipse 91, the ellipse shape has a bias flow line type, the impact effect of fluid on the surface of the pile foundations 11 can be more effectively reduced than that of a common circle shape, the stability of the pile foundations 11 arranged in the ellipse shape is stronger, the impact force of stronger sea wind can be borne, the pile foundations 11 are prevented from inclining or falling under the impact force of the sea wind, and the service life of the offshore wind power foundation 1 is prolonged.

According to the offshore wind power foundation 1 provided by the embodiment of the invention, the long axis of the first ellipse 91 is arranged to extend along the first direction, so that the long axis of the ellipse is consistent with the main wind direction, the impact of the main wind direction on the pile foundation 11 can be reduced, and the stability of the pile foundation 11 is ensured.

The pile foundation 11 extends downward from the bottom of the cap 7 and in a direction away from the central axis of the cap 7. Specifically, as shown in fig. 23 to 24, the central axes of the pile foundations 11 extend outward along the inside and outside directions of the bearing platform 7, so that the pile foundations can be conveniently inserted into gravels buried under the surface of the sea bed, and the stability of the offshore wind power foundation 1 is improved.

The centers of the top ends of the pile foundations 11 are located on the same horizontal plane and are distributed along the circumference of the second ellipse 92, and the major axis of the second ellipse 92 extends in the first direction. Specifically, as shown in fig. 24, the upper ends of the plurality of pile foundations 11 are arranged at intervals along the center of the plane in the direction of the second ellipse 92, so that the plurality of pile foundations 11 are arranged in an ellipse by the first ellipse 91 and the second ellipse 92.

The eccentricity of the first ellipse 91 is equal to the eccentricity of the second ellipse 92, and the projection of the center of the first ellipse 91 and the center of the second ellipse 92 on the horizontal plane coincide. Specifically, as shown in fig. 24, the ratio of the semi-focal length to the semi-major axis of the first ellipse 91 is equal to the ratio of the semi-focal length to the semi-major axis of the second ellipse 92, that is, the first ellipse 91 and the second ellipse 92 are similar ellipses, so that the difficulty in mounting and manufacturing the offshore wind power foundation 1 is reduced, and the capability of pit sea wind impact of the offshore wind power foundation 1 is improved.

The projection of the first ellipse 91 in the horizontal plane surrounds the projection of the platform 7 in the horizontal plane. Specifically, as shown in fig. 23 to 24, in the projection plane orthogonal to the up-down direction, the projection of the platform 7 in the projection plane is located in the first ellipse 91, so that the arrangement of the offshore wind power foundation 1 is more reasonable.

The outer peripheral profile of the cross section of the platform 7 is elliptical, with the major axis of the ellipse extending in a first direction. Specifically, as shown in fig. 21 to 24, the long axis of the bearing platform 7 extends along the main wind direction, so that the stability of the offshore wind power foundation 1 is further improved, and the capability of the offshore wind power foundation 1 for resisting sea wind impact is improved.

The platform 7 is an elliptical cylinder, and the central axis of the platform 7 extends in the vertical direction (up-down direction, as shown in fig. 21-22). Therefore, the bearing platform 7 has certain stability and the capability of pit sea wind impact, and the design of the bearing platform 7 is more reasonable.

The offshore wind power foundation 1 further comprises a tower cylinder 83, the tower cylinder 83 is installed at the top of the bearing platform 7, and the wind turbine is installed at the top end of the tower cylinder 83. Specifically, the tower tube 83 is arranged on the upper end surface of the bearing platform 7, and the fan is installed on the bearing platform 7 through the tower tube 83, so that the installation and manufacturing difficulty of the fan is reduced.

The included angle between the central axis of the pile foundation 11 and the horizontal plane is 30-90 degrees. Specifically, the included angle between the central axis of the pile foundation 11 and the horizontal plane may be any one of angles of 30 °, 45 °, 60 °, 75 °, 80 °, 85 °, and 90 °.

The major axis of the first ellipse 91 extends in the wind direction of the main wind direction, so that the major axis direction of the first ellipse 91 is subjected to a large impact force by the sea wind, and therefore, in some embodiments, the pile foundation 11 includes the first pile foundation 11 and the second pile foundation 11 that are opposite on the major axis of the first ellipse 91. Specifically, as shown in fig. 21 to 24, the first pile foundation 11 is provided at the left end of the first ellipse 91, and the second pile foundation 11 is provided at the right end of the first ellipse 91, thereby further improving the stability and the pit wind impact capability of the offshore wind power foundation 1.

The ratio of the length of the major axis to the length of the minor axis of the first ellipse 91 is greater than 1 and equal to or less than 5.

In some embodiments, the length of the major axis of the first ellipse 91 is 10m to 80m, and the length of the minor axis of the first ellipse 91 is 2m to 80m, specifically, the length of the major axis of the first ellipse 91 may be selected from: 2m, 10m, 20m, 30m, 40m, 50m, 60m, 70m, 80 m. The length of the minor axis of the first ellipse 91 may be selected to be any one of 2m, 10m, 20m, 30m, 40m, 50m, 60m, 70m, 80 m.

As shown in fig. 25 to 29, the offshore wind farm 1 according to the embodiment of the present application further includes a guide pipe 102.

A part of the pile foundation 11 is buried in the seabed; a guide pipe 102 is inserted into the seabed through the circumferential wall of the pile foundation 11 from the inside of the pile foundation 11, a portion of the guide pipe 102 inside the pile foundation 11 is provided with a grouting port 103, a portion of the guide pipe 102 inserted into the seabed is provided with a grouting port 104, and the guide pipe 102 is used for injecting seabed reinforcing material into the seabed to reinforce the seabed near the pile foundation 11.

According to the offshore wind power foundation 1 of the embodiment of the application, the guide pipe 102 is inserted into the seabed through the peripheral wall of the pile foundation 11 from the inside of the pile foundation 11, so that the acting area between the guide pipe 102 and the seabed is increased, and the bearing capacity of the offshore wind power foundation 1 is further increased.

According to the offshore wind power foundation 1 provided with the grouting ports 103 and 104 on the guide pipe 102, the reinforcing material is injected to the seabed near the pile foundation 11 through the grouting ports 104 on the guide pipe 102. The muddy soft soil seabed near the pile foundation 11 is hardened by the injected reinforcing material, so that the mechanical properties of the seabed engineering near the pile foundation 11 are improved, and the bearing capacity of the pile foundation 11 is improved.

The present invention achieves the effect of reducing the construction cost and the construction difficulty (the construction cost of the pile foundation 11 is inversely proportional to the depth of the pile foundation 11) by inserting the guide pipe 102 into the seabed through the circumferential wall of the pile foundation 11 from the inside of the pile foundation 11 and injecting a reinforcing material into the seabed near the pile foundation 11 instead of increasing the depth of the pile into the ground to increase the bearing capacity of the pile foundation.

Therefore, the offshore wind power foundation 1 according to the embodiment of the application has the advantages of improving the bearing capacity of the pile foundation 11 and reducing the construction cost of the foundation engineering of the pile foundation 11.

As shown in fig. 27 to 28, the conduit 102 is inserted obliquely downwards into the seabed. Offshore wind power foundation 1 according to the embodiment of the application. According to the offshore wind power foundation 1 of the embodiment of the application, the guide pipe 102 is inserted into the seabed in an inclined manner, so that the depth of the guide pipe 102 inserted into the seabed is kept unchanged, the contact area between the guide pipe 102 and the seabed is increased, and the bearing capacity of the pile foundation 11 where the guide pipe 102 is located is further improved.

As shown in fig. 28 to 29, the guide duct 102 has a plurality of injection ports 104, and at least some of the injection ports 104 are provided at intervals along the longitudinal direction of the guide duct 102. According to the offshore wind power foundation 1 of the embodiment of the application, the plurality of grouting openings 104 of the guide pipe 102 are provided, so that grout can be discharged from different sections in the grouting process conveniently, and the grouting speed and the grouting uniformity are increased.

Optionally, at least a portion of the injection ports 104 are evenly spaced along the length of the conduit 102. Further improving the uniformity of grouting.

Optionally, at least a portion of the injection ports 104 are spaced radially along the conduit 102.

As shown in fig. 27 to 28, the pile foundation 11 includes a first portion 111 and a second portion 112 connected in a length direction thereof, the second portion 112 is buried in a seabed having a seabed surface 2, the first portion 111 is located above the seabed surface 2, and the guide pipe 102 is inserted into the seabed through a peripheral wall of the second portion 112. According to the offshore wind power foundation 1 of the embodiment of the application, the guide pipe 102 is inserted into the seabed through the peripheral wall of the second part 112, so that a section of the guide pipe 102 positioned outside the pile foundation 11 is in contact with a sludge layer and a reinforcing material on the seabed, the adhesion force between the guide pipe 102 and the seabed is increased, and the bearing capacity of the pile foundation 11 on the offshore force is further improved.

Optionally, a concrete layer 101 is arranged in the pile foundation 11, and the top surface of the concrete is lower than the sea bed surface 2.

As shown in fig. 27 to 28, the guide tube 102 is plural, and the plural guide tubes 102 are arranged at intervals around the pile foundation 11. According to the offshore wind power foundation 1 of the embodiment of the application, the number of the guide pipes 102 is multiple, so that the specific surface area of the guide pipes 102 can be increased, and the contact area and the adhesive force of the guide pipes 102 to a sludge layer on a seabed are increased; the plurality of guide tubes 102 are spaced around the pile foundation 11 to improve uniformity of the force applied by the guide tubes 102 to the pile foundation 11 and uniformity of the injected reinforcing material.

Optionally, a plurality of conduits 102 are evenly spaced around pile foundation 11. Further improving the uniformity of the force applied by the guide pipe 102 to the pile foundation 11, and further improving the stability of the pile foundation 11.

As shown in fig. 27 to 28, some of the plurality of guide pipes 102 are arranged at intervals in the longitudinal direction of the pile foundation 11. According to the offshore wind power foundation 1 of the embodiment of the application, a part of the plurality of guide pipes 102 are arranged at intervals in the length direction of the pile foundation 11, so that the number of the guide pipes 102 is increased, and the contact area and the adhesive force of the guide pipes 102 to a sludge layer on a seabed are further increased.

As shown in fig. 27 to 28, the plurality of guide pipes 102 are divided into a plurality of groups, each group of guide pipes 102 includes a plurality of guide pipes 102, the plurality of guide pipes 102 in each group of guide pipes 102 are arranged at intervals along the circumferential direction of the pile foundation 11 and are radially arranged, and the plurality of groups of guide pipes 102 are arranged at intervals in the length direction of the pile foundation 11. The arrangement is beneficial to ensuring the uniformity of grouting of the reinforcing material in different spaces, so that the acting force between the guide pipe 102 and the seabed is improved, and meanwhile, the waste of the reinforcing material is avoided.

As shown in fig. 28, the ends of the pipes 102 in each set of pipes 102 extending into the seabed are all located on the same horizontal plane and are spaced apart along the circumference of the pile foundation 11. The consistency of the depth of the seabed where the conduit 102 is located is ensured, and the consistency and uniformity of the depth of grouting through the conduit 102 are improved.

The guide pipe 102 in the offshore wind power foundation 1 of the embodiment of the application is formed by splicing a plurality of guide pipe 102 sections along the length direction. For example, the conduit 102 may be a jointed telescopic pipe, and the cracking of the seabed solidification body may be reinforced by using a telescopic pipe repeated grouting pipe according to the seabed deformation damage condition. Thereby strengthening the seabed strength and keeping higher strength.

Optionally, the head 105 of the conduit 102 is tapered. The conical design of the head 105 of the guide pipe 102 is more beneficial to the construction mode of inserting the guide pipe 102 into the seabed, and the construction convenience is improved.

The offshore wind power foundation 1 of the embodiment of the application further comprises a construction platform, the construction platform is arranged in the pile foundation 11, the table top of the construction platform is located below the sea bed surface 2, and the grouting opening 103 is located above the table top of the construction platform. The construction platform is convenient for the construction of workers and equipment.

The application also provides an offshore wind power foundation reinforcing method, the offshore wind power foundation reinforcing method according to the embodiment of the application utilizes the offshore wind power foundation 1 to reinforce, and the reinforcing method comprises the following steps:

step 1: opening a hole in the peripheral wall of the pile foundation 11, and penetrating the guide pipe 102 from the inside of the pile foundation 11 through the hole from the inside to the outside through the peripheral wall of the pile foundation 11 and into the seabed;

step 2: cement slurry is injected into the seabed through the pipe 102 to reinforce the seabed.

Through the offshore wind power foundation reinforcement method in the application, the offshore wind power foundation 1 in the embodiment of the application is reinforced, the bearing capacity is guaranteed, meanwhile, the pile penetration depth of the pile foundation 11 can be reduced, and further the foundation engineering cost and the construction difficulty are reduced by 1.

The offshore wind power foundation reinforcing method further comprises the following steps:

and step 3: after the cement slurry is injected, injecting air or water into the guide pipe 102 to clean the inner channel of the guide pipe 102;

and 4, step 4: and (5) repeating the step (2) when the seabed is softened.

According to the offshore wind power foundation reinforcement method, the smoothness of the inner channel of the guide pipe 102 is guaranteed by cleaning the inner channel of the guide pipe 102, and the inner channel of the guide pipe 102 is prevented from being blocked to influence repeated grouting. Repeated grouting is adopted in the application, the method is suitable for the bottom layer with obvious seabed deformation, seabed surrounding rock breakage and more cracks, and the problems of surrounding rock reinforcement and force application point reinforcement of the grouting function are solved.

In some embodiments, the offshore wind power foundation reinforcing method according to the embodiment of the present application further includes pumping out surface layer sludge in the pile foundation 11, and then pouring concrete back cover into the pile foundation 11, where the top surface of the solidified concrete is lower than the sea bed surface 2. Concrete is poured into the pile foundation 11 to seal the bottom, so that sludge in the pile foundation 11 is prevented from overflowing into the pile foundation 11 again, and manual work or corresponding equipment can conveniently enter construction.

Optionally, before the concrete bottom sealing, stones can be thrown into the pile foundation 11, and the stability of the concrete bottom sealing is improved.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" and the like mean that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.