Repairing and reinforcing structure system for offshore wind turbine jacket

Abstract

The utility model provides an offshore wind turbine jacket repairing and reinforcing structure system which comprises a steel jacket box and a supporting structure, the steel jacket box comprises a plurality of block type annular box bodies, the annular box bodies are spliced into a circular ring structure matched with a jacket, reinforced concrete is filled in the annular box bodies, the annular box bodies are fixedly connected, and the supporting structure is connected with the steel jacket box. The top of the annular box body is fixedly connected with a lifting ring, the supporting structure comprises a steel platform and a plurality of steel inclined struts, the steel platform is fixedly connected below a damaged part of the jacket, and the steel inclined struts are fixedly arranged on the jacket in an annular array and are fixedly connected with the steel platform. By adding the steel jacket box on the offshore wind power jacket, the stability and the wind resistance of the foundation structure can be enhanced, so that the potential safety hazards of inclination, collapse and the like of facilities under severe sea conditions are reduced, the durability and the reliability of the facilities are improved, the long-term safe and stable operation of the facilities is ensured, the service life of the offshore wind power facilities is prolonged, and the economic benefits of the offshore wind power facilities are increased.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power foundation structures, and in particular to a repair and reinforcement structure system for an offshore wind turbine jacket foundation. Background Art

[0002] At present, as a clean energy source, wind energy is gradually becoming one of the mainstream energy sources. The development of the wind power industry has witnessed nearly a decade of rapid growth. At the same time, wind power technology is also constantly innovating and developing, and new wind turbine technologies, designs, and material applications are gradually being promoted and applied. However, due to the strong wave impact and wind force on offshore wind power facilities, the stability of this foundation structure faces great challenges. Therefore, it is necessary to continuously innovate and optimize design and construction technologies to ensure the sustainable development of the offshore wind power industry while repairing and reinforcing the offshore wind power foundation structure.

[0003] Repair and reinforcement of offshore wind power foundations is an important technology that can solve the damage problems faced by offshore wind power foundations, including foundation stress problems, corrosion problems, design and material problems, as well as maintenance and repair problems. At the same time, this is also a key measure to make full use of offshore wind resources, promote the application of clean energy technologies, and achieve energy conservation and emission reduction. Therefore, positive actions need to be taken to strengthen the foundation structure of offshore wind power to ensure its long-term safe and stable operation.

[0004] In current offshore wind farms, jacket foundations are an important structure for supporting the ducts of wind turbines. However, these jacket foundations need to withstand high-intensity waves and wave impacts in the marine environment, which may lead to foundation damage and a decline in mechanical properties. These damages and performance declines may affect the stability of the jacket foundation and the performance of wind turbines, bringing unnecessary risks to the long-term operation of the wind farm. To solve the repair problem of damaged offshore wind power jacket foundations, a repair and reinforcement structure system for offshore wind power foundations using steel caissons is proposed. Content of the Utility Model

[0005] Aiming at the deficiencies in the prior art, the utility model provides a repair and reinforcement structure system for an offshore wind turbine jacket foundation, which solves the problems in the prior art that the jacket foundation needs to withstand high-intensity waves and wave impacts in the marine environment, which may lead to foundation damage and a decline in mechanical properties, and may further affect the stability of the jacket foundation and the performance of wind turbines, bringing unnecessary risks to the long-term operation of the wind farm.

[0006] According to the technical solution of the present utility model, a repair and reinforcement structural system for an offshore wind turbine jacket includes a steel sleeve box and a support structure. The steel sleeve box includes several segmented annular boxes, and the annular boxes are spliced into a circular ring structure that matches the jacket. Reinforced concrete is filled in the annular boxes, and the annular boxes are fixedly connected to each other. A lifting ring is fixedly connected to the top of the annular box. The support structure includes a steel platform and several steel diagonal braces. The steel platform is fixedly connected below the damaged part of the jacket, and the steel diagonal braces are arranged in an annular array and fixed on the jacket and fixedly connected to the steel platform.

[0007] Furthermore, anchor holes are reserved between the annular boxes, and anchor rods are arranged in the anchor holes to connect the annular boxes.

[0008] Furthermore, shear studs arranged side by side are welded inside the steel sleeve box.

[0009] Furthermore, vertical positioning columns are fixedly connected to the steel platform, and corresponding concave cavities are arranged on the annular boxes.

[0010] Furthermore, a grouting port is arranged on the side of the annular box, and a slurry outlet is arranged on the top surface.

[0011] Furthermore, covers are welded to the grouting port and the slurry outlet after grouting is completed.

[0012] The technical principle of the present utility model is as follows: A steel sleeve box filled with reinforced concrete is used to enclose the damaged part of the jacket, and a support structure is used to support the steel sleeve box, thereby enclosing the damaged part of the jacket, improving the stability and wind resistance of the offshore wind power facilities, reducing potential safety hazards such as tilting and collapse of the facilities under harsh sea conditions, improving its durability and reliability, ensuring its long-term safe and stable operation, and thus extending the service life and economic benefits of the offshore wind power facilities.

[0013] Compared with the prior art, the present utility model has the following beneficial effects:

[0014] By adding a steel sleeve box to the offshore wind turbine jacket, the stability and wind resistance of the foundation structure can be enhanced, thereby reducing potential safety hazards such as tilting and collapse of the facilities under harsh sea conditions, improving its durability and reliability, ensuring its long-term safe and stable operation, and thus extending the service life and economic benefits of the offshore wind power facilities. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The following further illustrates the present utility model in conjunction with the drawings and embodiments:

[0016] Figure 1 It is a schematic diagram of the wind power foundation structure of the embodiment of the present utility model;

[0017] Figure 2Schematic diagram of the cooperation structure between the embodiment of the utility model and the jacket

[0018] Figure 3 Schematic bottom view of the embodiment of the utility model

[0019] Figure 4 Schematic diagram of the connection structure of the annular box body in the embodiment of the utility model

[0020] In the above drawings: jacket 1, annular box body 2, lifting ring 3, steel platform 4, steel diagonal brace 5, anchor rod 6, shear stud 7, positioning column 8, grouting port 9, slurry outlet 10, cover plate 11, damaged part 12 Detailed implementation manners

[0021] The technical solutions in the embodiment of the utility model will be further described below with reference to the drawings and embodiments

[0022] As Figures 1 to 4 shown, the embodiment of the utility model provides a repair and reinforcement structure system for an offshore wind turbine jacket, including a steel casing and a support structure. The steel casing includes a plurality of segmented annular box bodies 2, and the annular box bodies 2 are spliced into a circular ring structure that matches the jacket 1. Reinforced concrete is filled in the annular box body 2, and the annular box bodies 2 are fixedly connected to each other. A lifting ring 3 is fixedly connected to the top of the annular box body 2. The support structure includes a steel platform 4 and a plurality of steel diagonal braces 5. The steel platform 4 is fixedly connected below the damaged part of the jacket 1. The steel diagonal braces 5 are arranged in an annular array and fixed on the jacket 1 and fixedly connected to the steel platform 4

[0023] The operation steps of this embodiment are as follows: First, detect the damage of the jacket 1, formulate the corresponding steel casing, weld the steel platform 4 and the steel diagonal braces 5 at the bottom of the damaged part of the jacket 1, cut off the damaged part 12, sew and weld with a new conduit part, hoist the annular box body 2 and place it on the steel platform 4, make the annular box body 2 fit tightly with the jacket 1, fix between the annular box bodies 2, weld the annular box body 2 to the steel platform 4, place the prefabricated steel reinforcement cage in the annular box body 2 and fix it, weld the cover of the annular box body 2, leave the grouting position, and plug it after grouting into the annular box body 2 to complete the reinforcement of the jacket 1

[0024] As Figure 4 shown, in another embodiment, anchor holes are reserved between the annular box bodies 2, and anchor rods 6 are arranged in the anchor holes to connect the annular box bodies 2. The annular box bodies 2 are fixed by the anchor rods 6, with greater structural strength and the annular box bodies 2 are more stable. It is also possible to fixedly connect by increasing the welding plates

[0025] As Figure 2As shown, in another embodiment, shear studs 7 arranged side by side are welded inside the steel casing box. This facilitates the fixation of the steel reinforcement cage. At the same time, the shear studs transfer the shear force between the concrete and the steel, enabling the reinforced concrete structure and the steel to be combined into an integral whole, which can be used to connect the steel casing box and the reinforced concrete structure, improving the strength and stability of the steel casing box structure.

[0026] As Figure 2 , Figure 3 shown, in another embodiment, a vertical positioning column 8 is fixedly connected to the steel platform 4, and a corresponding concave cavity is provided on the annular box body 2. Generally, six positioning columns 8 are provided to position and install the steel casing box, and it can prevent the steel casing box from rotating along the jacket 1 structure.

[0027] As Figure 4 shown, in another embodiment, a grouting port 9 is provided on the side surface of the annular box body 2, and a slurry outlet 10 is provided on the top surface. Grout is injected from the grouting port 9 on the side surface, and it can be blocked after slurry comes out from the slurry outlet 10 on the top surface.

[0028] As Figure 4 shown, in this embodiment, a cover plate 11 is welded to the grouting port 9 and the slurry outlet 10 after grouting. The cover plate 11 welded is used for blocking to ensure that the steel casing box is sealed and does not leak slurry.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not restrictive. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A repair and reinforcement structural system for an offshore wind turbine jacket, characterized in that It includes a steel caisson and a support structure. The steel caisson includes several segmented annular boxes, and the annular boxes are spliced into a circular ring structure that matches the jacket. Reinforced concrete is filled in the annular boxes, and the annular boxes are fixedly connected to each other. A lifting ring is fixedly connected to the top of the annular box. The support structure includes a steel platform and several steel diagonal braces. The steel platform is fixedly connected below the damaged part of the jacket, and the steel diagonal braces are arranged in an annular array and fixed on the jacket and fixedly connected to the steel platform.

2. The repair and reinforcement structural system of an offshore wind turbine jacket as claimed in claim 1, wherein: Anchor holes are reserved between the annular boxes, and anchor rods are arranged in the anchor holes to connect the annular boxes.

3. The repair and reinforcement structural system of an offshore wind turbine jacket according to claim 1, characterized in that: Shear studs arranged side by side are welded inside the steel caisson.

4. The repair and reinforcement structural system of an offshore wind turbine jacket according to claim 1, characterized in that: Vertical positioning columns are fixedly connected to the steel platform, and corresponding concave cavities are arranged on the annular boxes.

5. A repair and reinforcement structural system for an offshore wind turbine jacket as claimed in claim 1, wherein: A grouting port is arranged on the side surface of the annular box, and a slurry outlet is arranged on the top surface.

6. The repair and reinforcement structural system of an offshore wind turbine jacket as claimed in claim 5, wherein: Covers are welded to the grouting port and the slurry outlet after grouting is completed.

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