Floating wind power foundation assembled on water

Abstract

The present application relates to a floating wind power foundation assembled on water, the floating wind power foundation comprising: a plurality of independent floating bodies (1), the plurality of floating bodies (1) being connected to each other to form a foundation floating body having a polygonal structure, end portions of each floating body (1) being provided with cut slanted bottom surfaces, cut slanted bottom surfaces of two adjacent floating bodies (1) being connected to form a through opening, and a welding region at the joint being located above the through opening; and a plurality of columns (2), mounted on the foundation floating body.

Description

Floating wind turbine foundations that assemble on water

[0001] Related applications

[0002] This application claims priority to Chinese patent application filed on October 24, 2024, application number 2024114895275, entitled "Semi-submersible floating wind power foundation", the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of wind power generation technology, and in particular to a floating wind power foundation that can be assembled on water. Background Technology

[0004] With the development of wind power technology, offshore wind power technology has become an important part of the renewable energy field. Floating wind turbine foundations, as a technical solution suitable for deep water areas, support wind turbine generators through multiple pontoons or columns, enabling them to remain stable on the water surface and allowing wind power equipment to be installed in sea areas where the water depth exceeds the applicable depth of fixed foundations.

[0005] In related technologies, the sections are assembled on flat ground, and then the position and assembly accuracy are controlled using SPMTs or cranes. Finally, they are moved to a semi-submersible vessel via SPMTs or rails for launching. However, this method still requires a large site for ultra-large floating wind turbine foundations, and the launching operation is complex and costly. Alternatively, the assembly can be performed directly on the semi-submersible vessel, which then submerges to launch the buoy. While this method solves the site problem to some extent, it still faces challenges in stability and displacement for ultra-large foundations. Especially when constructing floating wind turbine foundations of 15MW and above, whose dimensions exceed 100m, current semi-submersible vessels are insufficient to meet the requirements.

[0006] The aforementioned assembly methods suffer from limitations in assembly space and difficulties in launching the assembled vessel. Assembling large semi-submersible vessels presents challenges due to insufficient deck area and high costs. If the floating bodies to be assembled are directly joined on the water, issues generally arise such as insufficient displacement, inadequate stability of the floating bodies, inability to provide a dry environment suitable for welding, and significant relative movement between the assembled floating bodies, making it difficult to meet construction precision requirements. Summary of the Invention

[0007] According to various embodiments of this application, a floating wind power foundation that can be assembled on water is provided.

[0008] A floating wind power foundation that assembles on water, comprising:

[0009] Multiple independent floating bodies are interconnected to form a basic floating body with a polygonal structure;

[0010] Each of the floats has a beveled bottom surface at its end; the beveled bottom surfaces of two adjacent floats are connected to form a through opening, and the welded area at the connection is located above the through opening;

[0011] Multiple columns are installed on the foundation float.

[0012] In one embodiment, the buoy includes:

[0013] The main body has a longitudinal structure;

[0014] The connecting parts are respectively provided at both ends in the longitudinal direction of the main body;

[0015] The multiple floating bodies are connected and fixed to each other through multiple connecting parts, and the column is installed on two adjacent connecting parts.

[0016] In one embodiment, the connecting portion includes:

[0017] A connecting surface is provided on one side of the connecting portion;

[0018] The connecting surfaces of two adjacent connecting parts are welded and fixed.

[0019] In one embodiment, the welding area includes a vertical welding area;

[0020] The two adjacent connecting surfaces are fitted together to form the vertical welding area, and the lowest point of the vertical welding area is higher than the highest point of the through opening.

[0021] In one embodiment, the connecting portion includes:

[0022] A support surface is provided on the upper side of the connecting part;

[0023] The bottom end of the column is mounted on the support surface.

[0024] In one embodiment, the welding area includes a transverse welding area;

[0025] The bottom surface of the column is in contact with the supporting surface to form the transverse welding area. The height of the plane where the transverse welding area is located is higher than the height of the waterline surface at the end of the through opening closest to the transverse welding area.

[0026] In one embodiment, the bottom of the two connected connecting portions is provided with the through opening, which passes through the connecting portions.

[0027] In one embodiment, the through-hole is at least partially exposed above the waterline where the float is located.

[0028] In one embodiment, the cross-section of the through-hole is a chamfered arc surface, and the weld seam on the arc surface is higher than the waterline where the float is located.

[0029] In one embodiment, two adjacent support surfaces are connected to form a polygon shape; the width of the bottom surface of the column is less than or equal to the width of the polygon shape.

[0030] In one embodiment, the end of the float is provided with a beveled end face relative to the bottom plate of the float.

[0031] In one embodiment, the three floats are connected to form a base float with a polygonal structure.

[0032] In one embodiment, the three columns are respectively installed on the support surfaces of two adjacent floats.

[0033] In one embodiment, two adjacent support surfaces are connected to form a hexagonal structure.

[0034] In one embodiment, the column is a cylindrical structure or a polygonal structure.

[0035] Details of one or more embodiments of this application are set forth in the following drawings and description. Other features, objects, and advantages of this application will become apparent from the specification, drawings, and claims. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the disclosed drawings without creative effort.

[0037] Figure 1 is a schematic diagram of the structure of the float in some embodiments.

[0038] Figure 2 is a schematic diagram of the structure of the float in some embodiments.

[0039] Figure 3 is a schematic diagram of the column structure in some embodiments.

[0040] Figure 4 is a schematic diagram of the structure of a wind power foundation in some embodiments.

[0041] Figure 5 is a partial cross-sectional schematic diagram of a wind power foundation in some embodiments.

[0042] Figure 6 is a schematic diagram of the structure of another float in some embodiments.

[0043] Figure 7 is a schematic diagram of the structure of another float in some embodiments.

[0044] Figure 8 is a structural schematic diagram of another column in some embodiments.

[0045] Figure 9 is a structural schematic diagram of another wind power foundation in some embodiments.

[0046] In the diagram: 1. Float; 10. Through-hole; 20. Welding area; 21. Vertical welding area; 22. Horizontal welding area; 30. Main body; 40. Connecting part; 41. Connecting surface; 42. Supporting surface; 2. Column; 3. Waterline surface. Detailed Implementation

[0047] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0048] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0049] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0050] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0051] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via 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. Similarly, "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.

[0052] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0053] Referring to Figure 1, which is a structural schematic diagram of the float 1 in one embodiment of this application, an embodiment of this application provides a floating wind power foundation that can be assembled on water, including a float 1 and a column 2. Multiple independent floats 1 are interconnected to form a polygonal foundation float.

[0054] Specifically, float 1 is made of high-strength, corrosion-resistant steel or composite materials to ensure sufficient strength and wave resistance in harsh marine environments.

[0055] In one embodiment, multiple independent floats 1 are interconnected to form a Y-shaped basic float.

[0056] In one embodiment, each individual float 1 has sufficient stability and displacement to float above the water surface before connection, and the empty vessel has a shallow draft. The floats 1 are connected by welding or flange bolts. Furthermore, the outer plates at the ends of the floats 1 near the connection joint (not shown) are beveled, ensuring that the connection joint is above the temporary waterline 3 when the floats 1 are connected, thus guaranteeing that welding or bolting operations can be performed in a dry environment.

[0057] In one embodiment, before connecting the two floats 1, a winch is used to pull the two floats 1 together and accurately dock them by limiting the position through a slot (not shown).

[0058] Referring to Figure 2, which is a structural schematic diagram of the float 1 in one embodiment of this application. In some embodiments, the end of a single float 1 is provided with a beveled bottom surface, and the beveled bottom surfaces of two adjacent floats 1 are connected to form a through opening 10, and the welding area 20 at the connection is located above the through opening 10.

[0059] In one embodiment, a beveled bottom surface is provided at the end of the float 1. When two adjacent floats 1 are connected, the two beveled bottom surfaces are connected to form a through opening 10, so that during the process of connecting the floats 1, the welding area 20 can be located above the through opening 10, that is, the welding area 20 is located above the waterline 3, ensuring a dry welding environment, thereby ensuring welding quality and further improving stability and wave resistance.

[0060] In one embodiment, the through-hole 10 extends through the connecting seam, and the cross-sectional shape of the through-hole 10 can be arc-shaped, rectangular, or other cross-sectional forms. The opening area of ​​the through-hole 10 is sufficient to allow workers to enter the through-hole 10 by suitable vessel for pre-treatment and inspection during the connection operation. In addition, the base float has a large draft, ensuring that the connecting seam is above the waterline 3 during the welding of the base float, maintaining a dry welding environment.

[0061] In one embodiment, after the base float is connected, multiple columns 2 are installed on the base float. During installation of the columns 2, the joints must also be above the temporary waterline of the base float.

[0062] In one embodiment, the column 2 is made of the same material as the float 1 to ensure compatibility between them. The cross-sectional shape and dimensions of the column 2 are optimized to ensure it can withstand the vertical and horizontal loads from the wind turbine.

[0063] Referring to Figures 1 to 4, which are schematic diagrams of the structure of a wind power foundation in one embodiment of this application.

[0064] In one topological configuration of this embodiment, three interconnected floats 1 can form a triangular foundation, effectively dispersing the impact of waves and currents on the foundation and improving overall stability and anti-overturning capability. At each point of the triangular structure, a column 2 is installed, with the three columns 2 respectively installed at the connection points of two adjacent floats 1. These columns 2 not only provide a stable support platform for the wind turbine equipment but also further enhance the structural strength and overall stability of the wind turbine foundation through their connection to the floats 1.

[0065] Referring to Figures 6 to 9, which are schematic diagrams of the structure of another wind power foundation in one embodiment of this application.

[0066] In another topological configuration of this embodiment, the three floating bodies 1 are centrally connected at a common center, on which a column 2 is located, and the wind turbine is mounted. Three side columns 2 are arranged around this center, forming a Y-shaped structure. This structural configuration can more effectively distribute and resist loads from all directions, improving overall stability and load-bearing capacity. Furthermore, the top of the Y-shaped structure is connected using diagonal braces and horizontal braces, further enhancing structural stability and ensuring the safe and reliable operation of the wind power equipment.

[0067] As described above, in the above-mentioned floating wind power foundation and its corresponding closure scheme, by setting a through-hole 10 for connection between the connection points of two adjacent floats 1, the welding area 20 at the connection point can be located above the through-hole 10, ensuring that the welding process is completed in a dry environment, guaranteeing welding quality and precision, thereby realizing the water-based closure process of multiple floats 1 and columns 2 without the need for separate closure and subsequent water launch operations, effectively simplifying the closure process of floats 1 and columns 2, further improving applicability, and effectively controlling production costs.

[0068] Referring to Figure 1, which is a structural schematic diagram of a float 1 according to an embodiment of this application, in some embodiments, the float 1 includes a main body 30 and a connecting portion 40.

[0069] In one embodiment, the main body 30 of the float 1 is made of a high-strength, corrosion-resistant, lightweight material, such as high-strength steel or composite materials. The main body 30 has a longitudinally elongated structure to ensure that the float 1 can provide sufficient buoyancy while maintaining structural stability. In this embodiment, the main body 30 of the float 1 is designed to be streamlined to reduce water flow resistance and improve the buoyancy and wave resistance of the float 1.

[0070] In one embodiment, connecting portions 40 are respectively located at both ends of the main body 30 in the longitudinal direction, and adopt a reinforced structural design to ensure that they can withstand the loads from other floats 1 and columns 2. The connecting portions 40 are provided with interfaces (not shown) for connecting with other floats 1 or columns 2, such as welding surfaces. In this embodiment, the connecting portions 40 are designed to be detachable to facilitate the assembly and disassembly of the floats 1.

[0071] In one embodiment, multiple floats 1 are interconnected and fixed by multiple connecting parts 40, and multiple columns 2 are mounted on the multiple connecting parts 40. The number and position of the columns 2 are determined according to the weight, size, and installation requirements of the wind turbine equipment. The top or outer periphery of the columns 2 are provided with flanges or other connecting devices for mounting the wind turbine equipment.

[0072] In one embodiment, the float 1 adopts a rectangular or rounded-corner rectangular design, which can reduce water flow resistance while ensuring sufficient buoyancy, thereby improving the stability and wave resistance of the float in the water. In addition, this shape of float is also easy to manufacture and transport, reducing manufacturing costs.

[0073] In one embodiment, the column 2 adopts a cylindrical or polygonal structure design, which can optimize the load-bearing capacity and stability of the structure. The circular column 2 has better wind pressure resistance and torsional resistance, while the polygonal column 2 can reduce material usage and manufacturing costs while ensuring load-bearing capacity.

[0074] Referring to Figure 1, which is a structural schematic diagram of the float 1 in one embodiment of this application, in some embodiments, the connecting portion 40 includes a connecting surface 41.

[0075] Specifically, the connecting surface 41 is used for welding and fixing to the connecting surface 41 of the adjacent float 1. The connecting surface 41 is the flat part of the connecting portion 40, and its size, shape, and position are customized according to the size and shape of the float 1. The connecting surface 41 needs to be large enough to ensure the strength and stability of the welded joint. At the same time, the surface of the connecting surface 41 needs to be treated to improve the weld quality and the seakeeping of the joint.

[0076] Referring to Figure 4, which is a structural schematic diagram of a wind power foundation in one embodiment of this application, in some embodiments, the welding area 20 includes a vertical welding area 21; two adjacent connecting surfaces 41 are fitted together to form the vertical welding area 21, and the lowest point of the vertical welding area 21 is higher than the highest point of the through opening 10.

[0077] Specifically, two adjacent connecting surfaces 41 are fitted together to form a vertical welding area 21. The shape of this area can be rectangular, circular, or other shapes suitable for welding. The lowest point of the vertical welding area 21 is higher than the highest point of the through-hole 10, ensuring that the welding area 20 is not affected by the water flow at the through-hole 10, ensuring a dry welding environment, thereby improving the sealing of the connection and the stability of the structure.

[0078] Referring to Figure 2, which is a structural schematic diagram of the float 1 in one embodiment of this application, in some embodiments, the connecting portion 40 includes a support surface 42.

[0079] Specifically, the support surface 42 is located on a flat area above the connecting part 40, used to support the bottom end of the column 2. The size, shape, and position of the support surface 42 are customized according to the size and installation requirements of the column 2 to ensure that the column 2 can be stably placed on the support surface 42. The bottom end of the column 2 is designed to match the shape of the support surface 42. By placing the bottom end of the column 2 on the support surface 42 and adjusting the position and angle of the column 2, the relative position between the column 2 and the connecting part 40 is ensured to meet the requirements. The column 2 and the connecting part 40 are then fixed together by welding, ensuring the strength and wave resistance of the connection structure.

[0080] Referring to Figure 4, which is a structural schematic diagram of a wind power foundation according to an embodiment of this application, in some embodiments, the welding area 20 includes a transverse welding area 22.

[0081] In one embodiment, the bottom surface of the column 2 is attached to the support surface 42 to form a transverse welding area 22. The height of the plane where the transverse welding area 22 is located is higher than the height of the waterline surface 3 where the end of the through opening 10 near the transverse welding area 22 is located.

[0082] Specifically, align column 2 with the through-hole 10 on the support surface 42, and slowly lower it until the bottom surface of column 2 contacts the support surface 42, ensuring the column 2 is accurately positioned to avoid deviations during subsequent welding. Perform transverse welding in the edge area where the bottom surface of column 2 contacts the support surface 42, i.e., the transverse welding area 22. During welding, control the welding speed and temperature to ensure a uniform, dense weld, forming a strong welded connection.

[0083] In one embodiment, the height of the plane where the transverse welding area 22 is located is higher than the height of the waterline plane 3 at the end of the through opening 10 near the transverse welding area 22. The purpose is to ensure that the transverse weld is higher than the through opening 10, that is, above the waterline of the through opening 10, to ensure a dry welding environment and further improve the connection stability between the column 2 and the support surface 42.

[0084] In one embodiment, two adjacent support surfaces 42 are connected to form a polygon shape; the width of the bottom surface of the column 2 is less than or equal to the width of the polygon shape.

[0085] Specifically, two adjacent support surfaces 42 are connected to form a polygonal shape, such as a hexagon, the specific shape depending on the number and arrangement of the connecting parts 40. The polygonal design of the support surfaces 42 helps to distribute pressure, improve structural stability, and facilitate modular transportation. Simultaneously, the width of the base of the column 2 is less than or equal to the width of the polygonal shape, ensuring that the column 2 can be stably placed on the support surface 42, preventing instability of the support structure due to excessive width, thus improving the overall structural stability and safety, and reducing production costs and installation difficulty. In practical applications, the shape, size, and material of the connecting parts 40 and the column 2 can be appropriately adjusted and optimized according to specific needs and conditions.

[0086] Referring to Figure 2, which is a structural schematic diagram of the float 1 in one embodiment of this application, in some embodiments, a through opening 10 is provided at the bottom of the two connected connecting portions 40, and the through opening 10 passes through the connecting portions 40.

[0087] Specifically, the outer end plate of float 1 is beveled to raise it above the water surface. The angle and height of the bevel are determined based on the size and shape of float 1 and the water level, which is equivalent to cutting a through opening 10 at the bottom of float 1 to ensure that the weld line is completely above the water surface when the two floats 1 are joined together.

[0088] Referring to Figure 5, which is a partial cross-sectional schematic diagram of a wind power foundation according to one embodiment of this application, in some embodiments, the through-hole 10 is at least partially exposed above the waterline 3 where the float 1 is located.

[0089] Specifically, the through-hole 10 is exposed above the waterline 3 where the float 1 is located, which means that even when the float 1 is at its maximum draft, the lower edge of the through-hole 10 is still above the water surface, thus ensuring that the welding area 20 above the through-hole 10 is always above the waterline 3 and maintaining a dry welding environment.

[0090] In one embodiment, the cross-section of the through-hole 10 is a chamfered arc surface, and the weld seam on the arc surface is higher than the waterline 3 where the float 1 is located.

[0091] Specifically, the through-hole 10 is located in a low-stress region of the structure to reduce stress concentration at the closure joint. Simultaneously, the cross-sectional shape of the through-hole 10 can be optimized according to actual conditions. For example, a circular arc cross-section of the through-hole 10 can evenly distribute stress, reducing stress concentration at the closure joint and thus improving the structure's stability and seakeeping. A rectangular cross-section of the through-hole 10 is easier to achieve during construction, as it can be completed through simple cutting and welding processes, reducing manufacturing costs and making it suitable for various floating structure applications.

[0092] In one embodiment, the through-hole 10 is located in a low-stress area of ​​the structure to avoid structural damage caused by stress concentration. At the same time, the height of the through-hole 10 is optimized according to the sea conditions to be more than 1m above the water surface. This ensures that when the two bottom floats 1 are closed, the weld seam is above the water surface to avoid seawater erosion, and also allows construction personnel to use small boats to pass through the through-hole 10 to reach the bottom of the welding area 20 for pre- and post-welding treatments.

[0093] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0094] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A floating wind turbine foundation that assembles on water, characterized in that, include: Multiple independent floats (1), the multiple floats (1) are connected to each other to form a basic float with a polygonal structure; Each of the floats (1) has a beveled bottom surface at its end; the beveled bottom surfaces of two adjacent floats (1) are connected to form a through opening, and the welding area at the connection is located above the through opening; Multiple columns (2) are installed on the foundation float.

2. The floating wind turbine foundation that assembles on water according to claim 1, characterized in that, The floating body (1) includes: The main body (30) has a longitudinal structure; Connecting parts (40) are respectively provided at both ends in the longitudinal direction of the main body (30); The multiple floating bodies (1) are connected and fixed to each other through multiple connecting parts (40), and the column (2) is installed on two adjacent connecting parts (40).

3. The floating wind turbine foundation that assembles on water according to claim 2, characterized in that, The connecting part (40) includes: A connecting surface (41) is provided on one side of the connecting portion (40); The connecting surfaces (41) of two adjacent connecting parts (40) are welded and fixed.

4. The floating wind turbine foundation that assembles on water according to claim 3, characterized in that, The welding area (20) includes a vertical welding area (21); The two adjacent connecting surfaces (41) are fitted together to form the vertical welding area (21), and the lowest point of the vertical welding area (21) is higher than the highest point of the through opening (10).

5. The floating wind turbine foundation that assembles on water according to claim 3, characterized in that, The connecting part (40) includes: A support surface (42) is provided on the upper side of the connecting part (40); The bottom end of the column (2) is mounted on the support surface (42).

6. The floating wind turbine foundation that assembles on water according to claim 5, characterized in that, The welding area (20) includes a transverse welding area (22); The bottom surface of the column (2) is attached to the support surface (42) to form the transverse welding area (22). The height of the plane where the transverse welding area (22) is located is higher than the height of the waterline surface (3) where the end of the through opening (10) is close to the transverse welding area (22).

7. The floating wind turbine foundation that assembles on water according to claim 2, characterized in that, The bottom of the two connected connecting parts (40) is provided with the through opening (10), and the through opening (10) passes through the connecting part (40).

8. The floating wind turbine foundation that assembles on water according to claim 7, characterized in that, The through-hole (10) is at least partially exposed above the waterline (3) where the float (1) is located.

9. The floating wind turbine foundation that assembles on water according to claim 7, characterized in that, The cross-section of the through-hole (10) is a chamfered arc surface, and the weld seam on the arc surface is higher than the waterline surface (3) where the float (1) is located.

10. The floating wind turbine foundation that assembles on water according to claim 5, characterized in that, The two adjacent support surfaces (42) are connected to form a polygon shape; the width of the bottom surface of the column (2) is less than or equal to the width of the polygon shape.

11. The floating wind turbine foundation that assembles on water according to claim 1, characterized in that, The end of the float (1) is provided with a beveled end face relative to the bottom plate of the float (1).

12. The floating wind turbine foundation that assembles on water according to claim 5, characterized in that, The three floats (1) are connected to form the basic floats of the polygonal structure.

13. The floating wind turbine foundation that assembles on water according to claim 12, characterized in that, The three columns (2) are respectively installed on the support surfaces (42) of two adjacent floats (1).

14. The floating wind turbine foundation that assembles on water according to claim 5, characterized in that, The two adjacent support surfaces (42) are connected to form a hexagonal structure.

15. The floating wind turbine foundation that assembles on water according to claim 5, characterized in that, The column (2) is a cylindrical structure or a polygonal structure.

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