Steel and concrete combined floating wind platform

Abstract

The utility model provides a kind of steel and concrete combined floating wind power platform, including support column assembly and pontoon assembly.Support column assembly is made of structural steel, including main column, cross brace and side column, main column top connects wind turbine generator set, and side column connects mooring system.Pontoon assembly is made of concrete, including main pontoon, connecting pontoon, side pontoon and heave plate, each pontoon is spliced by bolt, and multiple cavity buoyancy structure is formed.The platform has the advantages of high strength of steel structure and low cost, high buoyancy of concrete, modular design facilitates transportation and installation, heave plate effectively suppresses vertical motion, improves stability and economy in deep sea environment.

Description

Technical Field

[0001] This utility model relates to the field of wind power technology, and more specifically, to a floating wind power platform composed of steel and concrete. Background Technology

[0002] Compared to onshore and near-shore fixed wind power, deep-sea floating wind turbines offer numerous advantages, including more stable and abundant wind resources, higher wind speeds, less turbulence, and less environmental impact. They are also suitable for large-scale development, making them a research hotspot in the wind energy industry. Based on different methods of achieving stability, floating offshore wind turbine (FOWT) platforms are mainly divided into four categories: tension leg (TLP), barge, spar, and semi-submersible. Among these, semi-submersible platforms possess advantages such as good static stability, strong structural flexibility, ease of transportation and installation, good wind resistance, strong water depth adaptability, and relatively mature technology, showing promising application prospects.

[0003] Floating platform foundations are a crucial component of floating wind turbines, ensuring their stable operation in complex and ever-changing marine environments. Exploring suitable and effective floating platforms is essential for the further development of floating wind turbines. The four-column steel-concrete floating wind turbine platform is a semi-submersible floating structure. As the name suggests, this type of floating offshore wind turbine platform has four main columns, with a central column at the center where the wind turbine is mounted. The other three side columns are arranged in an equilateral triangle around the central column. Most existing four-column floating offshore wind turbine platforms are made of steel or concrete, but both have significant drawbacks. First, steel platforms have high buoyancy requirements, complex designs, and extremely high costs. Furthermore, steel platforms have limited resistance to wind and waves in extreme sea conditions, potentially leading to excessive platform motion response and affecting the stability and safety of the wind turbine. These drawbacks not only increase operating costs but may also reduce platform availability and overall reliability, limiting their application in deep-sea wind power projects. While concrete semi-submersible wind turbine platforms offer a cost advantage, they still have their limitations. Concrete platforms are typically large and heavy, resulting in a deep draft. While this helps them withstand wind and waves, it also makes transportation extremely inconvenient. Furthermore, concrete has relatively weak tensile strength, making it prone to cracking and even brittle fracture under dynamic tension from mooring cables, which affects the structure's durability and safety. With the continuous development and expansion of the offshore wind power industry, developing a new type of steel-concrete floating wind turbine platform that balances safety, stability, and economy has become an inevitable trend and a key aspect of the offshore wind power sector. Utility Model Content

[0004] This application provides a floating wind power platform that combines high strength, high stability, and low cost.

[0005] This application provides a floating wind power platform composed of steel and concrete, comprising:

[0006] The support column assembly includes a main column, cross braces, and side columns made of structural steel. The top of the main column is used to connect to a wind turbine. There are multiple side columns, which are circumferentially connected to the outer periphery of the main column by cross braces. The multiple side columns can be connected to a mooring system.

[0007] A pontoon assembly includes a main pontoon, connecting pontoons, side pontoons, and a heave plate made of concrete. The main pontoon is spliced ​​to the bottom of the main column. The number of connecting pontoons and side pontoons is the same as the number of side columns. The two ends of the connecting pontoons are spliced ​​to the main pontoons and the side pontoons, respectively. The side pontoons are spliced ​​to the bottom of the side columns. Each side pontoon has a heave plate connected to its bottom.

[0008] Compared with existing technologies, the steel-concrete composite floating wind turbine platform proposed in this application has the following advantages: The support column assembly uses structural steel, which meets the high strength requirements for wind turbine support and mooring system connections, avoiding the problem of weak tensile strength in concrete structures. Meanwhile, the float assembly uses concrete, significantly reducing material and manufacturing costs compared to all-steel platforms, thus avoiding the high cost of all-steel platforms. This solves the defects of a single material, balancing strength and cost. The splicing between the support column assembly and the float assembly facilitates transportation before platform use, reducing transportation costs. The main float, connecting float, and side floats form a multi-cavity buoyancy structure, ensuring sufficient and uniform buoyancy for the entire platform, avoiding the problems of large size and excessive draft of all-concrete platforms. The heave plates at the bottom of the side floats effectively suppress the vertical movement of the platform in the marine environment, solving the problems of limited wind and wave resistance and excessive motion response of existing steel platforms, and improving the operational stability and safety of the wind turbine. The overall structure combines the high strength of steel with the low cost and high buoyancy of concrete, meeting the dual requirements of "stability and economy" for platforms in deep-sea applications and breaking through the limitations of existing single-material platforms in deep-sea applications.

[0009] In one possible implementation, the main buoy is connected to the bottom of the main column via bolt assemblies; the side buoys are connected to the bottom of the side columns via bolt assemblies; and the two ends of the connecting buoy are respectively connected to the main buoy and the side buoy via bolt assemblies. Compared with existing technologies, using bolt assemblies to connect the main buoy to the main column, the side buoys to the side columns, and the connecting buoys to the main and side buoys is more convenient for factory prefabrication (each component can be produced independently) compared to fixed connection methods such as welding. On-site assembly only requires bolts, improving construction efficiency. If a component is damaged later, the bolts can be directly removed for replacement without overall disassembly, reducing maintenance difficulty and cost. Bolted connections can ensure connection strength through torque control, adapting to dynamic loads in marine environments and avoiding platform structural risks due to connection failure. Simultaneously, the detachability of bolted connections facilitates subsequent adjustments to the buoy and column structures according to sea conditions or equipment upgrade requirements, improving platform adaptability.

[0010] In one possible implementation, the main buoy has a main buoy cavity inside. A first water inlet hole is provided on the top surface of the main buoy that fits against the main column. The first water inlet hole communicates with the main buoy cavity. After the main buoy and the main column are assembled, the bottom surface of the main column seals the first water inlet hole. Compared with existing technologies, the main buoy has a hollow structure, reducing the weight of the buoy unit and solving the transportation inconvenience caused by the large volume and heavy weight of concrete buoys, thus reducing transportation costs and difficulties. Before assembly, water is injected through the first water inlet hole to adjust the weight. After the main buoy and the main column are assembled, the bottom surface of the main column directly seals the first water inlet hole, eliminating the need for additional sealing components and simplifying the assembly process. Simultaneously, it ensures the main buoy cavity is sealed, preventing seawater infiltration that could reduce buoyancy, ensuring the overall buoyancy stability of the platform, and preventing the risk of platform tilting or sinking due to insufficient buoyancy.

[0011] In one possible implementation, the side buoy has a side buoy cavity inside. A second water inlet is provided on the top surface of the side buoy that fits against the side column. The second water inlet communicates with the side buoy cavity. After the side buoy and side column are assembled, the bottom surface of the side column seals the second water inlet. Compared with the prior art, the side buoy has a hollow structure, reducing the weight of the side buoy unit and optimizing overall transportation efficiency in conjunction with the main buoy, avoiding the transportation inconvenience caused by the large weight of all-concrete side buoys. Before assembly, water is injected through the second water inlet to adjust buoyancy. After the side buoy and side column are assembled, the bottom surface of the side column directly seals the second water inlet, achieving a sealed side buoy cavity and ensuring sufficient and stable buoyancy on the side. This avoids buoyancy imbalance caused by leakage from one side buoy cavity, prevents the platform from tilting due to uneven lateral buoyancy, and improves the overall attitude stability of the platform.

[0012] In one possible implementation, the connecting pontoon has an auxiliary buoyancy cavity inside. The end face of the connecting pontoon facing the side pontoon has a first through hole communicating with the auxiliary buoyancy cavity. The side pontoon has a second through hole matching the first through hole, communicating with the side buoyancy cavity. After the side pontoon and the connecting pontoon are joined together, the first through hole and the second through hole communicate. Compared with the prior art, the auxiliary buoyancy cavity of the connecting pontoon and the side buoyancy cavity of the side pontoon are connected, forming a connected buoyancy system of "auxiliary buoyancy cavity and side buoyancy cavity," expanding the overall buoyancy cavity volume, further improving the platform's total buoyancy, and adapting to the support requirements of larger tonnage wind turbine units. The connected buoyancy cavity allows buoyancy to be evenly transmitted between the connecting pontoon and the side pontoon, avoiding structural stress concentration caused by excessive or insufficient local buoyancy. Especially under wind and wave loads, the uniform buoyancy distribution can reduce the local load on the pontoon and connecting parts, extend the structural service life, and improve the platform's wind and wave resistance.

[0013] In one possible implementation, the side buoys and the connecting buoys are sealed together with concrete. Compared to existing technologies, the concrete seal between the side buoys and the connecting buoys offers better compatibility with the buoy body material and provides a more durable seal. It effectively prevents seawater from seeping into the auxiliary and side buoy cavities through the joints, avoiding air leakage that could cause buoyancy failure and ensuring the platform's long-term stable operation. The concrete seal also creates a quasi-integral structure between the side buoys and the connecting buoys, enhancing the tensile and shear strength of the joint area. This adapts to the dynamic mooring forces and wave loads in marine environments, preventing structural loosening or breakage due to damage at the joint.

[0014] In one possible implementation, the auxiliary floating cavity is provided with multiple chambers separated by partitions. The bottom of each partition has small hydrophobic holes for connecting adjacent chambers. Compared to existing technologies, the partitions divide the auxiliary floating cavity into multiple independent chambers, with adjacent chambers connected by the hydrophobic holes. This ensures uniform distribution of ballast water within the auxiliary floating cavity, preventing violent flow of ballast water during platform movement, thus preventing platform tilting and significantly improving the platform's resilience.

[0015] In one possible implementation, both the main column and the side columns have a hollow cavity structure. The top surfaces of the main column and side columns are provided with water inlets communicating with the hollow cavities, and sealing caps are connected to these inlets. Compared with existing technologies, the hollow cavity structure of the main column and side columns significantly reduces the overall weight of the support column assembly while ensuring structural strength, lowering the buoyancy requirements of the float assembly. This allows for a suitable reduction in float volume, further optimizing transportation convenience and manufacturing costs. The top water inlets and sealing caps facilitate weight adjustment through "water injection for weight gain" or "water discharge for weight reduction," thereby adjusting the overall center of gravity of the platform and enhancing its adaptability to different marine environments and operating conditions. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this application;

[0017] Figure 2 This is a partial structural diagram of the application. Figure 1 ;

[0018] Figure 3 This is a partial structural diagram of the application. Figure 2 ;

[0019] Figure 4 This is a partial structural diagram of the application. Figure 3 ;

[0020] Figure 5 This is a partial structural diagram of the application. Figure 4 ;

[0021] Figure 6 This is a diagram illustrating the usage status of this application;

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Support column assembly; 11. Main column; 12. Cross brace; 13. Side column; 14. Inlet; 2. Float assembly; 21. Main float; 211. Main float cavity; 212. First inlet hole; 22. Connecting float; 221. Auxiliary float cavity; 222. First through hole; 223. Baffle plate; 224. Drainage hole; 23. Side float; 231. Side float cavity; 232. Second inlet hole; 233. Second through hole; 24. Heave plate. Detailed Implementation

[0024] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0025] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0026] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0027] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0028] See Figures 1 to 6 This application discloses a floating wind power platform composed of steel and concrete, including a support column assembly 1 and a pontoon assembly 2. The support column assembly 1 includes a main column 11, a cross brace 12, and a side column 13 made of structural steel. The pontoon assembly 2 includes a main pontoon 21, a connecting pontoon 22, a side pontoon 23, and a heave plate 24 made of concrete.

[0029] The main column 11 is welded from corrosion-resistant structural steel, with a cylindrical upper part and a frustum lower part. Its top is used for detachable connection to the wind turbine tower via bolts, enabling the fixed installation of the wind turbine. The cross braces 12 are also made of corrosion-resistant structural steel, hollow inside, and numbered three. One end of each cross brace 12 is welded to the outer periphery of the main column 11, and the other end is welded to the outer periphery of the corresponding side column 13. The three cross braces 12 are distributed circumferentially at a 120° angle around the main column 11, forming a stable triangular support structure and enhancing the overall lateral displacement resistance of the support column assembly 1. There are three side columns 13, also made of corrosion-resistant structural steel, and are cylindrical in shape. The lower part of each side column 13 is used to connect to the mooring cable of the mooring system, enabling the platform to be positioned at sea.

[0030] The main pontoon 21 is made of high-strength concrete and is hexagonal in shape. It is connected to the bottom of the main column 11 via bolt assemblies. Three connecting pontoons 22 are also made of high-strength concrete and are rectangular in structure. One end of each connecting pontoon 22 is connected to the corresponding interface on the outer periphery of the main pontoon 21 via bolt assemblies, and the other end is connected to the corresponding interface on the outer periphery of the side pontoons 23 via bolt assemblies. The axis of the connecting pontoons 22 is parallel to the axis of the cross brace 12, forming horizontal support for the side pontoons 23. Three side pontoons 23 are also made of high-strength concrete and are columnar. They are connected to the bottom of the side columns 13 via bolt assemblies, and interfaces matching the connecting pontoons 22 are pre-installed on the outer periphery of the side pontoons 23. Three heave plates 24 are bolted to the bottom of the three side buoys 23 respectively. They are made of high-strength concrete, are circular in shape, and increase the platform's added mass and damping in the heave direction, thereby reducing the platform's vertical motion amplitude at sea and improving stability. In other embodiments, the surfaces of the main buoy 21, connecting buoy 22, side buoys 23, and heave plates 24 are coated with a seawater corrosion resistant coating.

[0031] In this embodiment, during prefabrication, the main buoy 21 forms a main buoy cavity 211 inside. A first water inlet 212 is opened on the top surface of the main buoy 21 (i.e., the surface that connects with the bottom of the main column 11), and this hole communicates with the internal main buoy cavity 211. After the platform is towed to the predetermined sea area, it needs to be ballasted and sunk to reach the working draft. At this time, seawater can flow into the main buoy cavity 211 by opening the first water inlet 212. After the bottom of the main column 11 is fastened to the top surface of the main buoy 21 with bolts, the steel bottom surface of the main column 11 precisely covers and seals the first water inlet 212, preventing seawater from continuing to enter or flow out, thereby locking the ballast water in the main buoy cavity 211 and keeping the platform in a stable working state.

[0032] In this embodiment, each side buoy 23 also has a side buoy cavity 231 inside to provide buoyancy. A second water inlet hole 232 is also provided on the top surface of the side buoy 23 (i.e., the surface that connects with the bottom of the side post 13), and this hole communicates with the internal side buoy cavity 231. During ballast loading, seawater enters the side buoy cavity 231 through the second water inlet hole 232. After the bottom of the side post 13 is securely connected to the side buoy 23, the steel bottom surface of the side post 13 tightly seals the second water inlet hole 232, thus locking the ballast water.

[0033] In this embodiment, each connecting pontoon 22 has an auxiliary buoyancy cavity 221 inside. A first through hole 222 is provided on the end face of the connecting pontoon 22 facing the side pontoon 23, and this first through hole 222 communicates with the interior of the auxiliary buoyancy cavity 221. A second through hole 233 is provided at the corresponding position of the side pontoon 23 facing the connecting pontoon 22, and this second through hole 233 communicates with the interior of the side buoyancy cavity 231. When the connecting pontoon 22 and the side pontoon 23 are spliced ​​together using bolt assemblies, the first through hole 222 and the second through hole 233 are precisely aligned and connected. This design integrates the side buoyancy cavity 231 and the auxiliary buoyancy cavity 221 into a single unit, forming a larger ballast compartment, simplifying the ballast process and facilitating the platform's buoyancy adjustment under different operating conditions.

[0034] In this embodiment, a pre-designed post-cast strip is provided on the mating surface of the side pontoon 23 and the connecting pontoon 22. After the two are connected by bolt assemblies and aligned with the through holes, high-performance sealing concrete slurry is poured on the pre-cast strip on the mating surface. After it solidifies, a continuous and reliable concrete sealing layer is formed, ensuring that the two pontoons will not leak at the connection and enhancing the overall integrity of the structure.

[0035] In this embodiment, three concrete partitions 223 (integrated with the inner wall of the connecting pontoon 22) are cast along the length of the auxiliary floating cavity 221, dividing the auxiliary floating cavity 221 into four independent chambers. The partitions 223 are perpendicular to the axis of the connecting pontoon 22. A drainage hole 224 is opened at the bottom of each partition 223. The drainage hole 224 is used to connect two adjacent chambers. When the platform tilts or sways at sea, the ballast water in each chamber can slowly flow to each other through the drainage hole 224 at the bottom. This design can both reduce the free surface effect and enhance the stability of the platform, and ensure that when overall ballast or unloading is required, seawater can gradually fill or empty all chambers through the hole.

[0036] In this embodiment, the main column 11 and the three side columns 13 are all manufactured as hollow cavity structures. These cavities themselves can provide a portion of reserve buoyancy. A water inlet 14 is provided on the top surface of each column, and this inlet 14 communicates with the interior of its hollow cavity. Each water inlet 14 is equipped with an openable and closable sealing cover (e.g., a blind flange with a rubber sealing ring). During transportation and installation, the sealing cover remains tightly closed, ensuring the cavity of the steel column is sealed and provides buoyancy. When it is necessary to adjust the platform's attitude or add additional ballast, the sealing cover can be opened to allow seawater to flow into the cavity inside the column, achieving ballast.

[0037] This embodiment describes a floating wind power platform composed of steel and concrete. Prefabrication and assembly: The support column assembly 1 and the pontoon assembly 2 are prefabricated in the factory and assembled on-site using bolts. The main pontoon 21 is connected to the bottom of the main column 11, and the side pontoons 23 are connected to the bottom of the side columns 13. The two ends of the connecting pontoon 22 connect the main pontoon 21 and the side pontoons 23. After the side pontoons 23 and the connecting pontoons 22 are joined, they are sealed with concrete. Ballast adjustment: After transportation to the designated sea area, water is injected through the first water inlet 212 of the main pontoon 21 and the second water inlet 232 of the side pontoons 23 to sink the platform to the working draft. After assembly, the water inlets at the bottom of the column are sealed to lock the ballast water. The auxiliary floating cavity 221 and the side floating cavity 231 are connected through a through-hole, and the drainage hole 224 balances the ballast water in the chamber. Offshore operation: The top of the main column 11 is connected to the wind turbine unit, and the side column 13 is connected to the mooring system for positioning; the heave plate 24 suppresses vertical movement, and the hollow main column 11 and side column 13 can adjust the center of gravity by filling or draining water through the top water inlet 14 to ensure stable operation.

[0038] The beneficial effects of this application include:

[0039] I. The design adopts a combination of steel structure support columns and concrete pontoons, which takes into account the high strength of steel and the low cost and high buoyancy of concrete. This not only meets the high strength requirements of wind turbine support and mooring connection, but also significantly reduces material and manufacturing costs.

[0040] Second, the modular splicing structure facilitates factory prefabrication and on-site assembly, improving construction efficiency and reducing transportation and maintenance difficulties.

[0041] Third, the multi-cavity pontoon design ensures uniform buoyancy distribution, and together with the heave plate 24, effectively suppresses vertical movement, enhancing the stability and safety of the platform in complex sea conditions.

[0042] Fourth, the ballast water can be flexibly adjusted through the water inlet and through-hole structure, which makes it easy for the platform to sink to the working draft and lock the buoyancy, adapting to the needs of different sea areas.

[0043] Fifth, the hollow column structure allows for water injection to adjust the center of gravity, further enhancing the platform's overall stability and environmental adaptability.

[0044] In the description of the embodiments of this application, it should be noted that the terms "inner" and "outer" and other terms indicating direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0045] In the description of this application, the references to terms such as "an embodiment," "some embodiments," "in this embodiment," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0046] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A floating wind power platform combining steel and concrete, characterized in that, include: The support column assembly includes a main column, cross braces, and side columns made of structural steel. The top of the main column is used to connect to a wind turbine. There are multiple side columns, which are circumferentially connected to the outer periphery of the main column by cross braces. The multiple side columns can be connected to a mooring system. A pontoon assembly includes a main pontoon, connecting pontoons, side pontoons, and a heave plate made of concrete. The main pontoon is spliced ​​to the bottom of the main column. The number of connecting pontoons and side pontoons is the same as the number of side columns. The two ends of the connecting pontoons are spliced ​​to the main pontoons and the side pontoons, respectively. The side pontoons are spliced ​​to the bottom of the side columns. Each side pontoon has a heave plate connected to its bottom.

2. The steel and concrete composite floating wind power platform according to claim 1, characterized in that, The main buoy is connected to the bottom of the main column by bolt assemblies; the side buoy is connected to the bottom of the side column by bolt assemblies; the two ends of the connecting buoy are respectively connected to the main buoy and the side buoy by bolt assemblies.

3. The steel and concrete composite floating wind power platform according to claim 1, characterized in that, The main buoy has a main buoy cavity inside. The top surface of the main buoy, which is used to fit the main column, has a first water inlet hole. The first water inlet hole is connected to the main buoy cavity. After the main buoy and the main column are spliced ​​together, the bottom surface of the main column is sealed to block the first water inlet hole.

4. The steel and concrete composite floating wind power platform according to claim 1, characterized in that, The side float is provided with a side float cavity inside. The top surface of the side float, which is used to fit the side column, is provided with a second water inlet hole. The second water inlet hole is connected to the side float cavity. After the side float and the side column are spliced ​​together, the bottom surface of the side column is used to block the second water inlet hole.

5. The steel and concrete composite floating wind power platform according to claim 4, characterized in that, The connecting buoy has an auxiliary buoy cavity inside. The end face of the connecting buoy facing the side buoy has a first through hole that communicates with the auxiliary buoy cavity. The side buoy has a second through hole that matches the first through hole and communicates with the side buoy cavity. After the side buoy and the connecting buoy are spliced ​​together, the first through hole and the second through hole communicate with each other.

6. The steel and concrete composite floating wind power platform according to claim 5, characterized in that, The side buoys and the connecting buoys are sealed together with concrete.

7. The steel and concrete composite floating wind power platform according to claim 5, characterized in that, The auxiliary floating cavity is provided with multiple chambers separated by partitions. The bottom of the partitions is provided with hydrophobic holes, which are used to connect two adjacent chambers.

8. The steel and concrete composite floating wind power platform according to claim 1, characterized in that, Both the main column and the side column have a hollow cavity structure. The top surface of the main column and the side column is provided with a water inlet that communicates with the hollow cavity, and a sealing cap is connected to the water inlet.

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