阅读说明：本技术 海上风电加固装置和加固方法 (Offshore wind power reinforcing device and method ) 是由 邱旭 刘鑫 闫姝 刘恒 王加远 费宇涛 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加固装置和加固方法,其中加固装置包括桩基础和导管,桩基础的一部分埋入海床中。导管从桩基础内部穿过桩基础的周壁插入海床中,导管的位于桩基础内的部分设有灌浆口,导管的插入海床中的部分设有注浆口,导管用于向海床内注入海床加固材料以加固桩基础附近的海床。根据本申请实施例的海上风电加固装置具有提高桩基础的承载力,降低桩基础基础工程造价的优点。(The application provides an offshore wind power reinforcing device and a reinforcing method, wherein the reinforcing device comprises a pile foundation and a guide pipe, and a part of the pile foundation is buried in a seabed. The guide pipe is inserted into the seabed through the peripheral wall of the pile foundation from the inside of the pile foundation, the portion of the guide pipe located inside the pile foundation is provided with a grouting port, the portion of the guide pipe inserted into the seabed is provided with a grouting port, and the guide pipe is used for injecting seabed reinforcing material into the seabed to reinforce the seabed near the pile foundation. According to the embodiment of the application, the offshore wind power reinforcing device has the advantages of improving the bearing capacity of the pile foundation and reducing the construction cost of the pile foundation.)

1. An offshore wind power reinforcing apparatus, comprising:

a pile foundation, a portion of which is buried in a seabed;

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.

2. Offshore wind power installation according to claim 1, wherein the conduit is inserted obliquely downwards into the seabed.

3. The offshore wind-power reinforcing device according to claim 1, wherein the plurality of grouting ports of the guide pipe are provided, and at least a part of the grouting ports are arranged at intervals along a length direction of the guide pipe.

4. The offshore wind-power reinforcement device of claim 1, wherein the pile foundation comprises a first portion and a second portion connected in a length direction thereof, the second portion being buried in a seabed having a seabed surface above which the first portion is positioned, the conduit being inserted into the seabed through a circumferential wall of the second portion.

5. Offshore wind power reinforcement according to any of the claims 1-4, characterized in that the number of conduits is multiple, the multiple conduits being spaced around the pile foundation.

6. The offshore wind-power reinforcing apparatus according to claim 5, wherein a part of the plurality of pipes are arranged at intervals in a length direction of the pile foundation.

7. The offshore wind-power reinforcing device according to claim 6, wherein the plurality of pipes are divided into a plurality of groups, each group of pipes includes a plurality of pipes, the plurality of pipes in each group of pipes are arranged at intervals along the circumferential direction of the pile foundation and are arranged in a radial shape, and the plurality of groups of pipes are arranged at intervals along the length direction of the pile foundation.

8. The offshore wind-power reinforcing device according to claim 7, wherein the ends of the pipes in each group of pipes extending into the seabed are all located on the same horizontal plane and are arranged at intervals along the circumference of the pile foundation.

9. A method for reinforcing an offshore wind power foundation, characterized in that the method is reinforced by using the reinforcing device of any one of claims 1-8, and the method comprises the following steps:

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

step 2: and injecting cement slurry into the seabed through the guide pipe to reinforce the seabed.

10. The offshore wind power foundation reinforcement method of claim 9, further comprising:

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

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

Technical Field

The application relates to the technical field of offshore wind power, in particular to an offshore wind power reinforcing device and method.

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 to 25 percent of the investment of the whole offshore wind power, and the offshore wind power foundation generally requires more than 20 years of service life. However, most of seabed surface layers in coastal sea areas of China are silt soft soil seabed formed by scouring, a silt layer of 3-15m is arranged above a covering layer, and the silt layer is formed by silt and silt silty clay, so that the engineering mechanical property is poor. Therefore, at present, offshore wind power foundations in China are generally selected from multi-pile foundations, the bearing capacity of pile foundations is improved by increasing the pile penetration depth, the foundation engineering cost is improved, and the construction difficulty is increased.

Disclosure of Invention

The present application is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, the embodiment of the application provides an offshore wind power reinforcing device and a reinforcing method, and the device and the method have the advantages of improving the bearing capacity of the pile foundation and reducing the construction cost of the pile foundation.

The offshore wind power reinforcing device comprises a pile foundation and a guide pipe.

A portion of the pile foundation is buried in the seabed; the guide pipe penetrates through the peripheral wall of the pile foundation from the inside of the pile foundation to be inserted into the seabed, the part, located inside the pile foundation, of the guide pipe is provided with a grouting port, the part, inserted into the seabed, of the guide pipe is provided with a grouting port, and the guide pipe is used for injecting seabed reinforcing materials into the seabed so as to reinforce the seabed nearby the pile foundation.

According to the embodiment of the application, the offshore wind power reinforcing device has the advantages of improving the bearing capacity of the pile foundation and reducing the construction cost of the pile foundation.

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

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.

In some embodiments, the pile foundation includes a first portion and a second portion connected along their length, the second portion being buried in a seabed having a bed surface over which the first portion is located, the conduit being inserted into the seabed through a peripheral wall of the second portion.

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 includes 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 radially arranged, and the guide pipes in each group are arranged at intervals in the length direction of the pile foundation.

In some embodiments, the ends of the conduits of each set of conduits that extend into the seabed are all located on the same horizontal plane and are spaced circumferentially of the pile foundation.

A method for reinforcing an offshore wind power foundation, which is reinforced by using the reinforcing device of any one of the above items, comprises the following steps:

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

step 2: and injecting cement slurry into the seabed through the guide pipe to reinforce the seabed.

In some embodiments, the offshore wind power foundation reinforcement method further comprises:

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

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

Drawings

FIG. 1 is a first state diagram in the construction process of an offshore wind power reinforcing device according to an embodiment of the application;

FIG. 2 is a second state diagram in the construction process of the offshore wind power reinforcing device according to the embodiment of the application;

FIG. 3 is a state diagram III in the construction process of the offshore wind power reinforcing device according to the embodiment of the application;

FIG. 4 is a state diagram IV in the construction process of the offshore wind power reinforcing device according to the embodiment of the application;

FIG. 5 is an enlarged view of FIG. 4 at A;

reference numerals: an offshore wind power reinforcing apparatus 100; pile foundations 1; a first portion 11; a second portion 12; a concrete layer 13; a conduit 2; a grout port 21; a grouting port 22; a head portion 23; a seabed 3; the sea bed surface 31.

Detailed Description

Reference will now be made in detail to embodiments of the present application, 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.

As shown below with respect to fig. 1-5. An offshore wind power consolidation apparatus 100 and a consolidation method of an embodiment of the present invention are described.

As shown in fig. 1 to 5, an offshore wind power reinforcement device 100 according to an embodiment of the present application includes a pile foundation 1 and a guide pipe 2.

A part of the pile foundation 1 is buried in the seabed 3; the guide pipe 2 is inserted into the seabed 3 through the circumferential wall of the pile foundation 1 from the inside of the pile foundation 1, the portion of the guide pipe 2 inside the pile foundation 1 is provided with a grouting port 21, the portion of the guide pipe 2 inserted into the seabed 3 is provided with a grouting port 22, and the guide pipe 2 is used for injecting seabed 3 reinforcing material into the seabed 3 to reinforce the seabed 3 near the pile foundation 1.

According to the offshore wind power reinforcing device 100 of the embodiment of the application, the guide pipe 2 penetrates through the peripheral wall of the pile foundation 1 from the inside of the pile foundation 1 and is inserted into the seabed 3, the acting area between the guide pipe 2 and the seabed 3 is increased, and the bearing capacity of the offshore wind power reinforcing device 100 is further increased.

According to the offshore wind power reinforcing device 100 provided by the embodiment of the application, the grouting openings 21 and 22 are arranged on the guide pipe 2, and the reinforcing material is injected to the seabed 3 near the pile foundation 1 through the grouting openings 22 on the guide pipe 2. The silt soft soil seabed 3 near the pile foundation 1 is hardened by the injected reinforcing material, so that the engineering mechanical property of the seabed 3 near the pile foundation 1 is improved, and the bearing capacity of the pile foundation 1 is improved.

The guide pipe 2 penetrates through the peripheral wall of the pile foundation 1 from the inside of the pile foundation 1 and is inserted into the seabed 3, and the reinforcing mode of injecting reinforcing materials into the seabed 3 near the pile foundation 1 replaces the mode of increasing the pile penetration depth to improve the bearing capacity of a pile foundation, so that the effects of reducing the construction cost and the construction difficulty (the construction cost of the pile foundation 1 is inversely proportional to the depth of the pile foundation 1) are achieved.

Therefore, the offshore wind power reinforcing device 100 according to the embodiment of the application has the advantages of improving the bearing capacity of the pile foundation 1 and reducing the foundation engineering cost of the pile foundation 1.

As shown in fig. 3 to 4, the conduit 2 is inserted obliquely downwards into the seabed 3. Offshore wind power reinforcing apparatus 100 according to an embodiment of the present application. According to the offshore wind power reinforcing device 100 provided by the embodiment of the application, the guide pipe 2 is inserted into the seabed 3 in a downward inclined manner, so that the contact area between the guide pipe 2 and the seabed 3 is increased while the depth of the guide pipe 2 inserted into the seabed 3 is kept unchanged, and the bearing capacity of the pile foundation 1 where the guide pipe 2 is located is further improved.

As shown in fig. 4 to 5, the guide duct 2 has a plurality of injection ports 22, and at least some of the injection ports 22 are provided at intervals along the longitudinal direction of the guide duct 2. According to the offshore wind power reinforcing device 100 of the embodiment of the application, the plurality of grouting openings 22 of the guide pipe 2 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.

Alternatively, at least a portion of the injection ports 22 are evenly spaced along the length of the conduit 2. Further improving the uniformity of grouting.

Alternatively, at least a portion of the injection ports 22 are spaced radially of the guide duct 2.

As shown in fig. 3 to 4, the pile foundation 1 includes a first part 11 and a second part 12 connected in a length direction thereof, the second part 12 is buried in the seabed 3, the seabed 3 has a seabed surface 31, the first part 11 is positioned above the seabed surface 31, and the guide pipe 2 is inserted into the seabed 3 through a peripheral wall of the second part 12. According to the offshore wind power reinforcing device 100 of the embodiment of the application, the guide pipe 2 is inserted into the seabed 3 through the peripheral wall of the second part 12, so that a section of the guide pipe 2 positioned outside the pile foundation 1 is contacted with a sludge layer and reinforcing materials on the seabed 3, the adhesion force between the guide pipe 2 and the seabed 3 is increased, and the bearing capacity of the pile foundation 1 on the offshore force is further improved.

Optionally, a concrete layer 13 is arranged in the pile foundation 1, and the top surface of the concrete is lower than the sea bed surface 31.

As shown in fig. 3 to 4, the guide pipe 2 is plural, and the plural guide pipes 2 are arranged at intervals around the pile foundation 1. According to the offshore wind power reinforcing device 100 provided by the embodiment of the application, the number of the guide pipes 2 is multiple, so that the specific surface area of the guide pipes 2 can be increased, and further, the contact area and the adhesive force of the guide pipes 2 to a sludge layer on a seabed 3 are increased; the plurality of guide pipes 2 are arranged around the pile foundation 1 at intervals, so that the uniformity of the force applied by the guide pipes 2 to the pile foundation 1 and the uniformity of the injected reinforcing material can be improved.

Optionally, a plurality of conduits 2 are evenly spaced around the pile foundation 1. Further promoted the degree of consistency that improves pipe 2 and to pile foundation 1 application of force, and then improved pile foundation 1 steadiness.

As shown in fig. 3 to 4, some of the plurality of guide pipes 2 are arranged at intervals in the longitudinal direction of the pile foundation 1. According to the offshore wind power reinforcing device 100 of the embodiment of the application, a part of the plurality of guide pipes 2 are arranged at intervals in the length direction of the pile foundation 1, so that the number of the guide pipes 2 is increased, and the contact area and the adhesive force of the guide pipes 2 to a sludge layer on a seabed 3 are further increased.

As shown in fig. 3 to 4, the plurality of guide pipes 2 are divided into a plurality of groups, each group of guide pipes 2 includes a plurality of guide pipes 2, the plurality of guide pipes 2 in each group of guide pipes 2 are arranged at intervals along the circumferential direction of the pile foundation 1 and are radially arranged, and the plurality of groups of guide pipes 2 are arranged at intervals in the length direction of the pile foundation 1. 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 2 and the seabed 3 is improved, and meanwhile, the waste of the reinforcing material is avoided.

As shown in fig. 4, the ends of the pipes 2 in each group of pipes 2 extending into the seabed 3 are all located on the same horizontal plane and are arranged at intervals along the circumference of the pile foundation 1. The depth consistency of the seabed 3 where the guide pipe 2 is positioned is guaranteed, and the depth consistency and uniformity of grouting through the guide pipe 2 are further improved.

The guide pipe 2 in the offshore wind power reinforcing device 100 of the embodiment of the application is formed by splicing a plurality of guide pipe 2 sections along the length direction of the guide pipe. For example, the conduit 2 can be a spliced telescopic pipe, and the curing body of the seabed 3 can be timely reinforced by using a telescopic pipe repeated grouting pipe according to the deformation and damage condition of the seabed 3. Thereby strengthening the seabed 3 and maintaining a high strength.

Optionally, the head 23 of the catheter 2 is tapered. The conical design of the head part 23 of the conduit 2 is more beneficial to the construction mode of inserting the conduit 2 into the seabed 3, and the construction convenience is improved.

The offshore wind power reinforcing device 100 of the embodiment of the application further comprises a construction platform, the construction platform is arranged in the pile foundation 1, the table top of the construction platform is located below the sea bed surface 31, and the grouting opening 21 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 reinforcing device 100 to reinforce, and the reinforcing method comprises the following steps:

step 1: making a hole in the peripheral wall of the pile foundation 1, and penetrating the guide pipe 2 from the inside of the pile foundation 1 through the hole from the inside to the outside through the peripheral wall of the pile foundation 1 and inserting the guide pipe into the seabed 3;

step 2: grout is injected into the seabed 3 through the pipe 2 to reinforce the seabed 3.

Through the offshore wind power foundation reinforcement method in the application, the offshore wind power reinforcement device 100 according to the embodiment of the application is reinforced, the bearing capacity is guaranteed, meanwhile, the pile penetration depth of the pile foundation 1 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 2 to clean the inner channel of the guide pipe 2;

and 4, step 4: and repeating the step 2 when the seabed 3 is softened.

Offshore wind power basis reinforcement method has guaranteed the unobstructed degree of pipe 2's inside passage through wasing 2 inside passages of pipe in this application, prevents that 2 inside passages of pipe from blockking up, influences repeated slip casting. Repeated grouting is adopted, the method is suitable for the bottom layer with obvious deformation of the seabed 3, the surrounding rock of the seabed 3 is broken and cracks are more, 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 reinforcement method according to the embodiment of the present application further includes pumping out surface layer sludge in the pile foundation 1, and then pouring concrete into the pile foundation 1 to form a bottom seal, where the top surface of the solidified concrete is lower than the surface 31 of the sea bed. Concrete is poured into the pile foundation 1 to seal the bottom, so that sludge in the pile foundation 1 is prevented from overflowing into the pile foundation 1 again, and manual work or corresponding equipment can conveniently enter construction.

Optionally, before concrete bottom sealing, stones can be thrown into the pile foundation 1, 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.