阅读说明：本技术 研究任意波向内孤立波对半潜平台立柱和沉箱影响的系统 (System for researching influence of any wave inward solitary wave on semi-submersible platform upright post and caisson ) 是由 张晶晶 陈科 尤云祥 于 2021-08-12 设计创作，主要内容包括：本发明提供一种研究任意波向内孤立波对半潜平台立柱和沉箱影响的系统,包括一半潜式平台模型、一内波实验水槽、一测力单元和一压载装置；所述半潜式平台模型放置于所述内波实验水槽内；所述测力单元和所述压载装置连接所述半潜式平台模型。本发明的一种研究任意波向内孤立波对半潜平台立柱和沉箱影响的系统,可保证在不影响整体流场的情况下,有效测量作用于平台各子结构的内孤立波载荷；从而为实海域内孤立波载荷的预测提供可靠的理论依据和技术保障。(The invention provides a system for researching the influence of any wave inward solitary waves on a semi-submersible platform upright post and a caisson, which comprises a semi-submersible platform model, an internal wave experimental water tank, a force measuring unit and a ballast device, wherein the semi-submersible platform model is provided with a plurality of semi-submersible platform upright posts; the semi-submersible platform model is placed in the internal wave experimental water tank; the force measuring unit and the ballast device are connected with the semi-submersible platform model. The system for researching the influence of any wave inward solitary waves on the semi-submersible platform upright post and the caisson can effectively measure the internal solitary wave load acting on each substructure of the platform under the condition of not influencing the whole flow field; therefore, reliable theoretical basis and technical guarantee are provided for prediction of solitary wave load in the real sea area.)

1. A system for researching the influence of any wave inward solitary waves on semi-submersible platform columns and caissons is characterized by comprising a semi-submersible platform model, an internal wave experimental water tank, a force measuring unit and a ballast device; the semi-submersible platform model is placed in the internal wave experimental water tank; the force measuring unit and the ballast device are connected with the semi-submersible platform model.

2. The system for studying the effect of arbitrary wave inward solitary waves on semi-submersible platform columns and caissons as claimed in claim 1 wherein said semi-submersible platform model comprises a column section and a caisson section; the upright column part comprises four upright columns, the top surfaces of the upright columns extend outwards and are connected to form a rectangular deck, and each upright column is provided with a through hole along a central shaft; the caisson part comprises two caissons, four screw rods and two organic glass plates; the two organic glass plates are fixed on the four screw rods in an up-down parallel arrangement manner; the four screw rods respectively penetrate through the four through holes and are fixed on the two caissons in pairs; the caisson forms a groove at the periphery of the screw connecting part; the lower end of the upright post is placed in the groove, the upright post is separated from the caisson, and the screw rod is not contacted with the inner wall of the through hole.

3. The system for studying the effect of any wave inward solitary waves on semi-submersible platform columns and caissons as claimed in claim 2 wherein said through holes are 3cm in diameter; the depth of the groove is 0.5 cm.

4. The system for researching the influence of any wave inward solitary waves on the semi-submersible platform upright post and caisson according to claim 2, wherein the force measuring unit comprises a three-component force measuring balance, a two-component force measuring balance, a signal amplifier and a PC end; the three-component force measuring balance is fixed in the middle of one organic glass plate positioned below; the two-component force measuring balance is fixed in the middle of the deck; the three-component force measuring balance and the two-component force measuring balance are respectively connected with the PC end through the signal amplifier.

5. The system for studying the effect of any wave inward solitary waves on semi-submersible platform legs and caissons of claim 4 wherein said ballast means comprises a steel frame, a channel, two pulley blocks, a tray, a weight stack and a string; the steel frame is erected on the internal wave experimental water tank; the channel steel is connected to the top of the steel frame; the pulley blocks are arranged at two ends of the channel steel; the rope is arranged on the two pulley blocks, one end of the rope is connected with the tray, and the other end of the rope is connected with the semi-submersible platform model; the weight stack is placed on the tray.

6. The system for studying the influence of any wave inward solitary waves on semi-submersible platform columns and caissons as claimed in claim 5 wherein said deck and said plexiglas plate are perforated with circular holes.

7. The system for researching the influence of any wave inward solitary waves on semi-submersible platform uprights and caissons as claimed in claim 6, wherein the side wall of the inner wave experimental tank is made of high-transparency glass.

Technical Field

The invention relates to the field of ship and ocean engineering, in particular to a system for researching influence of any wave inward solitary wave on a semi-submersible platform upright post and a caisson.

Background

Internal solitary waves are an important and frequently occurring marine phenomenon in the ocean and have become an environmental factor which must be considered in ocean engineering design. In order to prevent and solve the possible harm caused by the special marine environment, basic theoretical research for enhancing hydrodynamic performance of the semi-submersible platform in the internal solitary wave environment is urgently needed.

Due to the interaction condition of the solitary wave in the ocean and the floating platform, the high cost and the impossibility of on-site synchronous observation, the experimental research becomes an important and unique research method.

At present, hydrodynamic performance research of floating platforms in an internal solitary wave environment is mostly only aimed at a model overall structure, load characteristics of various substructures such as columns and caissons are rarely involved, and influence of internal solitary waves in any incoming wave direction on columns and caissons of semi-submersible platforms is not researched.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a system for researching the influence of any wave inward solitary wave on a semi-submersible platform upright post and a caisson, which can ensure that the internal solitary wave load acting on each substructure of the platform can be effectively measured under the condition of not influencing the whole flow field; therefore, reliable theoretical basis and technical guarantee are provided for prediction of solitary wave load in the real sea area.

In order to achieve the purpose, the invention provides a system for researching the influence of any wave inward solitary wave on a semi-submersible platform upright post and a caisson, which comprises a semi-submersible platform model, an internal wave experimental water tank, a force measuring unit and a ballast device, wherein the semi-submersible platform model is provided with a plurality of semi-submersible platform upright posts; the semi-submersible platform model is placed in the internal wave experimental water tank; the force measuring unit and the ballast device are connected with the semi-submersible platform model.

Preferably, the semi-submersible platform model comprises a column portion and a caisson portion; the upright column part comprises four upright columns, the top surfaces of the upright columns extend outwards and are connected to form a rectangular deck, and each upright column is provided with a through hole along a central shaft; the caisson part comprises two caissons, four screw rods and two organic glass plates; the two organic glass plates are fixed on the four screw rods in an up-down parallel arrangement manner; the four screw rods respectively penetrate through the four through holes and are fixed on the two caissons in pairs; the caisson forms a groove at the periphery of the screw connecting part; the lower end of the upright post is placed in the groove, the upright post is separated from the caisson, and the screw rod is not contacted with the inner wall of the through hole.

Preferably, the diameter of the through hole is 3 cm; the depth of the groove is 0.5 cm.

Preferably, the force measuring unit comprises a three-component force measuring balance, a two-component force measuring balance, a signal amplifier and a PC end; the three-component force measuring balance is fixed in the middle of one organic glass plate positioned below; the two-component force measuring balance is fixed in the middle of the deck; the three-component force measuring balance and the two-component force measuring balance are respectively connected with the PC end through the signal amplifier.

Preferably, the ballast device comprises a steel frame, a channel steel, two pulley blocks, a tray, a weight group and a rope; the steel frame is erected on the internal wave experimental water tank; the channel steel is connected to the top of the steel frame; the pulley blocks are arranged at two ends of the channel steel; the rope is arranged on the two pulley blocks, one end of the rope is connected with the tray, and the other end of the rope is connected with the semi-submersible platform model; the weight stack is placed on the tray.

Preferably, the deck and the organic glass plate are provided with round holes.

Preferably, the side wall of the internal wave experimental water tank is made of high-transparency glass.

Due to the adoption of the technical scheme, the invention has the following beneficial effects:

the experiment system comprises a semi-submersible platform model, an internal wave experiment water tank, a force measuring unit, a ballast device and the like, can independently measure the internal solitary wave loads of a semi-submersible platform upright column structure and a caisson structure, and is convenient to operate and high in feasibility. In addition, the experimental system can effectively ensure that the load measurement results among the substructures of the platform are not interfered with each other, and can simulate the coherence characteristics of the stand column and the caisson in the integral internal solitary wave induction flow field; and the complete process of the interaction between the inner solitary wave and the platform can be simulated, so that relevant parameters are provided for the design of the floating structure. The working condition of any incoming wave direction is realized through rotating the model through the round holes which are arranged on the deck and the organic glass plate and correspond to different wave direction angles. The internal wave experiment water tank is provided with a high-transmittance glass side wall, so that the purpose of observing the experiment process at any position is realized.

Drawings

FIG. 1 is a schematic structural diagram of a system for studying the influence of any wave inward solitary waves on semi-submersible platform columns and caissons in an embodiment of the invention;

FIG. 2 is a schematic structural diagram of a semi-submersible platform model according to an embodiment of the invention;

FIG. 3 is a schematic structural view of a column portion of an embodiment of the present invention;

fig. 4 is a schematic structural view of a caisson portion according to an embodiment of the invention.

Detailed Description

The following description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, which are set forth in the accompanying drawings and figures 1-4, to provide a better understanding of the function and features of the invention.

Referring to fig. 1 to 4, a system for studying the influence of any wave inward solitary wave on the semi-submersible platform upright post and caisson according to an embodiment of the present invention includes a semi-submersible platform model 6, an internal wave experimental water tank 1, a force measuring unit 7 and a ballast device; the semi-submersible platform model 6 is placed in the internal wave experimental water tank 1; the force measuring unit 7 and the ballast device are connected with the semi-submersible platform model 6.

The semi-submersible platform model 6 comprises a column section 61 and a caisson section 62; the column part 61 comprises four columns 611, the top surfaces of the columns 611 extend outwards and are connected to form a rectangular deck 612, and each column 611 is provided with a through hole 613 along the central axis; caisson section 62 comprises two caissons 621, four screws 622, and two plexiglass plates 623; the two organic glass plates 623 are fixed on the four screw rods 622 in an up-down parallel arrangement; the four screws 622 respectively pass through the four through holes 613 and are fixed on the two caissons 621 two by two; caisson 621 forms recess 624 on the periphery of the connection portion of screw 622; the lower end of the pillar 611 is placed in the groove 624, the pillar 611 is separated from the caisson 621, and the screw 622 does not contact the inner wall of the through hole 613.

In this embodiment, the diameter of the through hole 613 is 3 cm; the depth of the recess 624 is 0.5 cm.

The force measuring unit 7 comprises a three-component force measuring balance 71, a two-component force measuring balance 72, a signal amplifier and a PC end 73; the three-component force measuring balance 71 is fixed in the middle of an organic glass plate 623 positioned below; the two-component force measuring balance 72 is fixed in the middle of the deck 612; the three-component force measuring balance 71 and the two-component force measuring balance 72 are respectively connected with a PC end 73 through signal amplifiers.

The ballast device comprises a steel frame 4, a channel steel 5, two pulley blocks 3, a tray 2, a weight group 8 and a rope; the steel frame 4 is erected on the internal wave experimental water tank 1; the channel steel 5 is connected to the top of the steel frame 4; the pulley blocks 3 are arranged at two ends of the channel steel 5; the rope is arranged on the two pulley blocks 3, one end of the rope is connected with the tray 2, and the other end of the rope is connected with the semi-submersible platform model 6; the weight stack 8 is placed on the tray 2.

The deck 612 and the plexiglass plate 623 are provided with circular holes. The working condition of any incoming wave direction is realized by rotating the model through round holes which are formed on the deck 612 and the organic glass plate 623 and correspond to different wave direction angles.

The material of the side wall of the internal wave experiment water tank 1 adopts high-transparency glass, so that the purpose of observing the experiment process at any position can be realized.

When the internal solitary wave is transmitted to the semi-submersible platform experimental model, synchronous electronic signal acquisition is carried out on the interaction process of the internal solitary wave and the platform by adopting the installation method illustrated in fig. 1, and data processing is carried out through the PC end 73, so that the internal solitary wave load data of the structures of the semi-submersible platform upright column 611 and the caisson 621 can be obtained.

While the present invention has been described in detail and with reference to the embodiments thereof as illustrated in the accompanying drawings, it will be apparent to one skilled in the art that various changes and modifications can be made therein. Therefore, certain details of the embodiments are not to be interpreted as limiting, and the scope of the invention is to be determined by the appended claims.