Fan foundation and wind turbine generator system

Abstract

The application provides a fan foundation and a wind turbine generator set. The fan foundation comprises a bottom plate, the thickness direction of the bottom plate being the up-down direction; a column, the column extending along the up-down direction; a main rib beam, the main rib beam being arranged in a step groove and connected with the outer circumferential surface of the column and a first surface of the bottom plate; and a rib beam assembly, the rib beam assembly comprising a plurality of secondary rib beams, the plurality of secondary rib beams being arranged in the step groove, each of the plurality of secondary rib beams being connected with the first surface, a first part of the plurality of secondary rib beams being connected with the main rib beam, the length direction of the first part and the length direction of the main rib beam connected therewith forming an angle, a second part of the plurality of secondary rib beams being connected with one of the main rib beam, the column and the first part, and the distance between any point on the first surface and at least one of the column, the main rib beam and the secondary rib beam in the horizontal direction being less than or equal to a preset value. Therefore, the fan foundation according to the application has the advantage of high bearing capacity.

Description

Technical Field

[0001] This invention relates to the field of wind power generation technology, specifically to a wind turbine foundation and a wind turbine generator set. Background Technology

[0002] With the continuous advancement of wind power generation technology, the single-unit capacity of wind turbine generators is increasing, and the foundations for wind turbine generators are also becoming larger, leading to higher costs. Wind turbine foundations are large-volume reinforced concrete structures. In related technologies, wind turbine foundations have low load-bearing capacity and low material utilization. To improve load-bearing capacity, large quantities of concrete and steel reinforcement are used. Summary of the Invention

[0003] This invention aims to at least partially solve one of the technical problems in related technologies. To this end, embodiments of this invention provide a wind turbine foundation and a wind turbine generator set.

[0004] The wind turbine foundation of this embodiment of the invention includes:

[0005] A base plate, wherein the thickness direction of the base plate is vertical, and the base plate has a first surface facing upward;

[0006] A pedestal, the pedestal extending in the vertical direction, the bottom of the pedestal being disposed on the first surface, and the outer peripheral surface of the pedestal defining a stepped groove with the first surface;

[0007] The main rib beam is disposed in the stepped groove and is connected to the outer peripheral surface of the column and the first surface of the base plate;

[0008] A rib assembly includes multiple secondary ribs disposed within the stepped groove. Each of the secondary ribs is connected to the first surface. A first portion of the secondary ribs is connected to the main rib, and the length direction of the first portion forms an angle with the length direction of the main rib connected to it. A second portion of the secondary ribs is connected to one of the main rib, the column, and the first portion. The distance in the horizontal direction between any point on the first surface and at least one of the column, the main rib, and the secondary ribs is less than or equal to a preset value.

[0009] Therefore, the wind turbine foundation according to the embodiments of the present invention has the advantage of high load-bearing capacity.

[0010] In some embodiments, the column is located at the center of the first surface;

[0011] There are multiple main rib beams, which are arranged at intervals along the circumference of the platform. The length direction of the main rib beams is consistent with the radial direction of the platform, and the rib beam assembly is provided on both sides of the thickness direction of the main rib beams.

[0012] The height of the main rib beam gradually decreases along the direction away from the pedestal;

[0013] The thickness of the main rib gradually decreases along the direction away from the pedestal;

[0014] The maximum thickness of the secondary rib beam is less than the maximum thickness of the main rib beam.

[0015] The maximum height of the secondary rib is less than the maximum height of the main rib.

[0016] In some embodiments, the rib-beam assembly includes

[0017] The first-level secondary rib beam is connected to the wall surface of the main rib beam in the thickness direction, and the length direction of the first-level secondary rib beam forms an angle with the length direction of the main rib beam.

[0018] The second-level secondary rib is connected to the wall surface of the first-level secondary rib in the thickness direction, and the length direction of the first-level secondary rib forms an angle with the length direction of the first-level secondary rib.

[0019] In some embodiments, the height dimension of the first-level secondary rib gradually decreases along the direction away from the main rib to which it is connected;

[0020] The thickness of the first-level secondary rib gradually decreases along the direction away from the main rib connected to it;

[0021] The height of the second-level secondary rib gradually decreases along the direction away from the first-level secondary rib connected to it;

[0022] The thickness of the second-level secondary rib gradually decreases along the direction away from the first-level secondary rib connected to it.

[0023] In some embodiments, a plurality of rib beam assemblies are provided on both sides of the main rib beam in the thickness direction, and the plurality of rib beam assemblies are spaced apart along the length direction of the main rib beam to which they are connected.

[0024] In the radial direction of the column, the maximum thickness of the first-level rib of the adjacent rib assembly is greater than the maximum thickness of the first-level rib of the distant rib assembly; and the maximum height of the first-level rib of the adjacent rib assembly is greater than the maximum height of the first-level rib of the distant rib assembly.

[0025] In the radial direction of the column, the maximum thickness of the second-level secondary rib of the adjacent rib assembly is greater than the maximum thickness of the second-level secondary rib of the adjacent rib assembly farther from the column, and the maximum height of the second-level secondary rib of the adjacent rib assembly is greater than the maximum height of the second-level secondary rib of the adjacent rib assembly farther from the column.

[0026] In some embodiments, the main rib has a first end and a second end opposite to each other in the length direction, the first end being connected to the pedestal, the height of the first end being greater than or equal to 1 meter and less than or equal to 5 meters, the thickness of the first end being greater than or equal to 1 meter and less than or equal to 2 meters, and the thickness of the second end being greater than or equal to 0.3 meters and less than or equal to 1 meter.

[0027] The first-level secondary rib has a third end and a fourth end opposite to each other in the length direction. The third end is connected to the main rib. The height of the third end is greater than or equal to 0.5 meters and less than or equal to 3 meters, and the thickness of the third end is greater than or equal to 0.5 meters and less than or equal to 0.8 meters. The thickness of the fourth end is greater than or equal to 0.2 meters and less than or equal to 0.5 meters.

[0028] The second-level secondary rib has a fifth end and a sixth end opposite to each other in the length direction. The fifth end is connected to the first-level secondary rib. The height of the fifth end is greater than or equal to 0.3 meters and less than or equal to 2 meters. The thickness of the fifth end is greater than or equal to 0.2 meters and less than or equal to 0.5 meters. The thickness of the fourth end is greater than or equal to 0.15 meters and less than or equal to 0.3 meters.

[0029] In the radial direction of the pedestal, the distance between the third end of the first-level secondary rib and the pedestal is greater than or equal to 1 meter, the distance between two adjacent third ends is greater than or equal to 2 meters, and the distance between the third end and the edge of the base plate is greater than or equal to 2 meters.

[0030] In some embodiments, any point on the first surface is less than 0.2 meters away in the horizontal direction from at least one of the column, the main rib, and the secondary rib.

[0031] In some embodiments, the base plate has a second surface facing downwards, the second surface being planar, and the thickness of the base plate gradually decreases along the direction away from the column.

[0032] In some embodiments, the pedestal, the main rib beam, and the secondary rib beam are all provided with reinforcing bars, and the pedestal, the main rib beam, and the secondary rib beam are integrally formed.

[0033] The present invention also proposes a wind turbine generator set, including the wind turbine foundation described above. Attached Figure Description

[0034] Figure 1 This is a top view of a wind turbine foundation according to an embodiment of the present invention.

[0035] Figure 2 This is a cross-sectional view of the base plate and the column according to an embodiment of the present invention.

[0036] Figure 3 This is a sectional view of the base plate and main rib beam according to an embodiment of the present invention.

[0037] Figure label:

[0038] Wind turbine foundation 100;

[0039] Base plate 1, first surface 11, second surface 12;

[0040] Column 2, step groove 21;

[0041] Main rib beam 3, first end 31, second end 32;

[0042] First-level secondary rib 4, third end 41, fourth end 42;

[0043] Secondary rib 5, fifth end 51, sixth end 52. Detailed Implementation

[0044] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0045] The wind turbine foundation 100 of an embodiment of the present invention is described below with reference to the accompanying drawings. Figures 1 to 3 As shown, the wind turbine foundation 100 according to an embodiment of the present invention includes a base plate 1, a column 2, a main rib beam 3, and a rib beam assembly.

[0046] The thickness direction of the base plate 1 is vertical, and the base plate 1 has a first surface 11 facing upward. The column 2 extends vertically, and the bottom of the column 2 is located on the first surface 11. The outer peripheral surface of the column 2 and the first surface 11 define a stepped groove 21. The main rib beam 3 is located in the stepped groove 21 and is connected to the outer peripheral surface of the column 2 and the first surface 11 of the base plate 1.

[0047] The rib assembly includes multiple secondary ribs, which are disposed within the stepped groove 21. Each of the multiple secondary ribs is connected to the first surface 11. A first part of the multiple secondary ribs is connected to the main rib 3, and the length direction of the first part forms an angle with the length direction of the main rib 3 to which it is connected. A second part of the multiple secondary ribs is connected to one of the main rib 3, the pedestal 2, and the first part. The distance between any point on the first surface 11 and at least one of the pedestal 2, the main rib 3, and the secondary ribs in the horizontal direction is less than or equal to a preset value.

[0048] According to an embodiment of the present invention, the wind turbine foundation 100 is provided with a base plate 1, on which a column 2 and a main rib beam 3 are provided. The main rib beam 3 is connected to the column 2, thereby improving the load-bearing capacity of the column 2. Furthermore, according to an embodiment of the present invention, the wind turbine foundation 100 is provided with a rib beam assembly, such that multiple secondary rib beams of the rib beam assembly can be distributed within the stepped groove 21. A first portion of the multiple secondary rib beams is connected to the main rib beam 3, and the length direction of the first portion forms an angle with the length direction of the connected main rib beam 3. This facilitates the first portion of the secondary rib beams to provide support to the main rib beam 3, thereby improving the load-bearing capacity of the main rib beam 3, and thus improving the load-bearing capacity of the column 2. A second portion of the multiple secondary rib beams is connected to one of the main rib beam 3, the column 2, and the first portion. Therefore, the second portion of the multiple secondary rib beams can provide load-bearing capacity to the connected main rib beam 3, the column 2, and the first portion, thereby improving the load-bearing capacity of the corresponding main rib beam 3, the column 2, and the first portion, and further improving the load-bearing capacity of the column 2. The rib assembly comprises multiple secondary ribs divided into multi-level ribs. Each rib (main rib 3 and upper-level secondary ribs) has a connected lower-level rib. The first part of the secondary rib is a lower-level rib of the main rib 3, and the second part of the secondary rib can serve as a lower-level rib of the first part. In other words, the lower-level ribs in the multi-level rib assembly can provide support and load-bearing capacity for the upper-level ribs. The biomimetic structure of the tree-shaped arrangement of the multi-level ribs can improve the load-bearing capacity of the upper-level ribs. The fact that any point on the first surface 11 is less than or equal to a preset value in the horizontal direction from at least one of the column 2, main rib 3, and secondary ribs ensures a more uniform distribution of the ribs (main rib 3 and secondary ribs) on the first surface, thereby improving the load-bearing capacity of the wind turbine foundation 100 according to the embodiment of the present invention.

[0049] Therefore, the wind turbine foundation 100 according to the embodiment of the present invention has the advantage of high load-bearing capacity.

[0050] like Figures 1 to 3 As shown, the wind turbine foundation 100 according to an embodiment of the present invention includes a base plate 1, a column 2, a main rib beam 3, and a rib beam assembly.

[0051] The thickness direction of the base plate 1 is vertical. The base plate 1 has a first surface 11 facing upwards and a second surface 12 facing downwards, which is planar. Specifically, the outer perimeter of the base plate 1 (first surface 11 and second surface 12) is circular, the first surface 11 is the upper surface of the base plate 1, and the second surface 12 is the lower surface of the base plate 1. The vertical direction is shown by the arrow in the figure.

[0052] The pillar 2 extends vertically, and its bottom is located on the first surface 11. The outer circumference of the pillar 2 and the first surface 11 define a stepped groove 21. Specifically, the pillar 2 is a cylinder, and it is located at the center (center) of the first surface 11.

[0053] like Figure 1 As shown, the main rib beam 3 is located within the stepped groove 21 and connected to the outer circumferential surface of the column 2 and the first surface 11 of the base plate 1, thereby enabling the main rib beam 3 to support the column 2. Specifically, there are multiple main rib beams 3, which are arranged at intervals along the circumference of the column 2. The length direction of the main rib beam 3 is consistent with the radial direction of the column 2. Rib beam assemblies are provided on both sides of the thickness direction of the main rib beam 3, so that the rib beam assemblies are located between two main rib beams 3 in the circumferential direction.

[0054] like Figure 1 and Figure 3 As shown, in some embodiments, the height of the main rib beam 3 gradually decreases along the direction away from the pedestal 2, and the thickness of the main rib beam 3 also gradually decreases along the direction away from the pedestal 2. This allows the main rib beam 3 to increase the load-bearing capacity of the pedestal 2 while reducing the material usage of the main rib beam 3, thereby reducing production costs.

[0055] like Figure 1 As shown, in some embodiments, the main rib beam 3 has a first end 31 and a second end 32 opposite to each other in the length direction, and the first end 31 is connected to the pedestal 2. The height and thickness of the first end 31 are both greater than the height and thickness of the second end 32, and the height and thickness of the main rib beam 3 gradually decrease from the first end 31 to the second end 32.

[0056] In some embodiments, the height of the first end 31 is greater than or equal to 1 meter and less than or equal to 5 meters, the thickness of the first end 31 is greater than or equal to 1 meter and less than or equal to 2 meters, and the thickness of the second end 32 is greater than or equal to 0.3 meters and less than or equal to 1 meter. For example, the height of the first end 31 is 4 meters, the thickness of the first end 31 is 1.5 meters, and the thickness of the second end 32 is 0.8 meters. For example, the height of the first end 31 can be 2 meters, 3 meters, or 4 meters, the thickness of the first end 31 can be 1.5 meters, and the thickness of the second end 32 can be 0.8 meters.

[0057] like Figure 1As shown, the rib assembly includes multiple secondary ribs disposed within the stepped groove 21, each of which is connected to the first surface 11. A first portion of each secondary rib is connected to the main rib 3, with the length direction of the first portion forming an angle with the length direction of the connected main rib 3. A second portion of each secondary rib is connected to one of the main rib 3, the column 2, and the first portion. Any point on the first surface 11 is horizontally less than or equal to a preset value from at least one of the column 2, the main rib 3, and the secondary ribs. For example, the second portion of each secondary rib is connected to the first portion, with the length direction of the first portion forming an angle with the length direction of the second portion.

[0058] In some embodiments, any point on the first surface 11 is less than 0.2 meters away in the horizontal direction from at least one of the pedestal 2, the main rib 3, and the secondary rib. This allows for a more even distribution of the main rib 3 and the secondary rib, thereby improving the supporting force and load-bearing capacity of the ribs on the pedestal 2.

[0059] In some embodiments, the maximum thickness of the secondary rib beam is less than the maximum thickness of the main rib beam 3, and the maximum height of the secondary rib beam is less than the maximum height of the main rib beam 3. Specifically, the height of the connecting section between the secondary rib beam and the main rib beam 3 is less than or equal to the height of the connection point of the main rib beam 2, and the thickness of the connecting section between the secondary rib beam and the main rib beam 3 is less than or equal to the thickness of the connection point of the main rib beam 2. This reduces the amount of secondary rib beams used while allowing the secondary rib beams to support the main rib beam 3.

[0060] like Figure 1 As shown, in some embodiments, the rib assembly includes a first-level secondary rib 4 and a second-level secondary rib 5.

[0061] The first-level secondary rib 4 is connected to the wall surface of the main rib 3 along its thickness direction, and the length direction of the first-level secondary rib 4 forms an angle with the length direction of the main rib 3. Specifically, the height and thickness of the first-level secondary rib 4 gradually decrease along the direction away from the main rib 3. As a lower-level rib of the main rib 3, the first-level secondary rib 4 can support the main rib 3 and improve its load-bearing capacity. The reduction in the height and thickness of the first-level secondary rib 4 along the direction away from the main rib 3 reduces material usage while still meeting support requirements. For example, multiple first-level secondary ribs 4 are provided on both walls along the thickness direction of the main rib 3.

[0062] In some embodiments, in the radial direction of the column 2, the maximum thickness of the first-level rib 4 of the adjacent rib assembly is greater than the maximum thickness of the first-level rib 4 of the rib assembly furthest from the column 2, and the maximum height of the first-level rib 4 of the adjacent rib assembly is greater than the maximum height of the first-level rib 4 of the rib assembly furthest from the column 2. That is, in the radial direction of the column 2, both the maximum thickness and maximum height of the first-level rib 4 adjacent to the column 2 are greater than the maximum thickness and maximum height of the first-level rib 4 furthest from the column 2.

[0063] In some embodiments, the first-level secondary rib 4 has a third end 41 and a fourth end 42 opposite to each other in the longitudinal direction. The third end 41 is connected to the main rib 3, and the height of the third end 41 is greater than or equal to 0.5 meters and less than or equal to 3 meters, and the thickness of the third end 41 is greater than or equal to 0.5 meters and less than or equal to 0.8 meters. The thickness of the fourth end 42 is greater than or equal to 0.2 meters and less than or equal to 0.5 meters. For example, the height of the third end 41 can be 1 meter, 2 meters, or 3 meters, the thickness of the third end 41 can be 0.6 meters or 0.7 meters, and the thickness of the fourth end 42 can be 0.3 meters or 0.4 meters.

[0064] In some embodiments, in the radial direction of the column 2, the distance between the third end 41 of the first-level secondary rib beam 4 and the column 2 is greater than or equal to 1 meter, the distance between two adjacent third ends 41 is greater than or equal to 2 meters, and the distance between the third end 41 and the edge of the base plate 1 is greater than or equal to 2 meters. That is, the distance between the connection position of the first-level secondary rib beam 4 and the main rib beam 3 and the column 2 is greater than or equal to 1 meter, the distance between the connection positions of two adjacent first-level secondary rib beams 4 and the main rib beam 3 is greater than or equal to 2 meters, and the distance between the connection position of the first-level secondary rib beam 4 and the main rib beam 3 and the edge of the base plate 1 is greater than or equal to 2 meters.

[0065] like Figure 1 As shown, in some embodiments, multiple rib beam assemblies are provided on both sides of the main rib beam 3 in the thickness direction, and the multiple rib beam assemblies are spaced apart along the length direction of the main rib beam 3 to which they are connected. Specifically, the first-level secondary rib beams 4 on the same side in the thickness direction of the main rib beam 3 are spaced apart.

[0066] like Figure 1As shown, the second-level secondary rib 5 is connected to the wall surface of the first-level secondary rib 4 in the thickness direction, and the length direction of the first-level secondary rib 4 forms an angle with its length direction. Specifically, the height dimension of the second-level secondary rib 5 gradually decreases along the direction away from the first-level secondary rib 4 it is connected to, and the thickness dimension of the second-level secondary rib 5 also gradually decreases along the direction away from the first-level secondary rib 4 it is connected to. That is, the second-level secondary rib 5, as a lower-level rib of the first-level secondary rib 4, can support the first-level secondary rib 4 and improve its load-bearing capacity. The gradually decreasing height and thickness dimensions of the second-level secondary rib 5 along the direction away from the first-level secondary rib 4 it is connected to meet the support requirements, reduce the amount of material used, and reduce the amount of material used. For example, multiple second-level secondary ribs 5 are provided on both walls in the thickness direction of the first-level secondary rib 4.

[0067] In some embodiments, in the radial direction of the column 2, the maximum thickness of the second-level rib 5 of the adjacent rib assembly is greater than the maximum thickness of the second-level rib 5 of the rib assembly furthest from the column 2, and the maximum height of the second-level rib 5 of the adjacent rib assembly is greater than the maximum height of the second-level rib 5 of the rib assembly furthest from the column 2. That is, in the radial direction of the column 2, both the maximum thickness and maximum height of the second-level rib 5 adjacent to the column 2 are greater than the maximum thickness and maximum height of the second-level rib 5 furthest from the column 2.

[0068] like Figure 1 As shown, in some embodiments, the second-level rib 5 has a fifth end 51 and a sixth end 52 opposite each other in the longitudinal direction, the fifth end 51 being connected to the first-level rib 4. The height of the fifth end 51 is greater than or equal to 0.3 meters and less than or equal to 2 meters, the thickness of the fifth end 51 is greater than or equal to 0.2 meters and less than or equal to 0.5 meters, and the thickness of the fourth end 42 is greater than or equal to 0.15 meters and less than or equal to 0.3 meters. For example, the height of the fifth end 51 can be 0.5 meters, 1 meter, or 1.5 meters, the thickness of the fifth end 51 can be 0.3 meters or 0.4 meters, and the thickness of the fourth end 42 can be 0.2 meters.

[0069] In some embodiments, the pedestal 2, the main rib beam 3, and the secondary rib beam are all reinforced with steel bars, and the pedestal 2, the main rib beam 3, and the secondary rib beam are integrally formed. Specifically, the pedestal 2, the main rib beam 3, and the secondary rib beam are all made of concrete.

[0070] like Figure 1 and Figure 2As shown, in some embodiments, the thickness of the base plate 1 gradually decreases along the direction away from the column 2. This allows the center of the base plate 1 to meet the requirements for supporting the column 2, while the edges of the base plate 1 can support the main rib beam 3 and the secondary rib beam. Furthermore, the thickness of the edges of the base plate 1 is thinner, thereby reducing the amount of base plate 1 used and thus reducing production costs.

[0071] The present invention also proposes a wind turbine generator set. Therefore, the wind turbine generator set according to an embodiment of the present invention includes a wind turbine foundation 100 according to an embodiment of the present invention. Thus, the wind turbine generator set according to an embodiment of the present invention has the advantage of high load-bearing capacity of the wind turbine foundation 100.

[0072] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0073] Furthermore, the terms "first" and "second" are used 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 as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0074] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," 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, an electrical connection, or a connection that allows communication between them; 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 explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0075] In this invention, unless otherwise explicitly 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," "over," and "on top" of 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.

[0076] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. 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 any suitable manner in 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.

[0077] Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.

Claims

1. A wind turbine foundation, characterized in that, include: A base plate, wherein the thickness direction of the base plate is vertical, and the base plate has a first surface facing upward; A pedestal, the pedestal extending in the vertical direction, the bottom of the pedestal being disposed on the first surface, and the outer peripheral surface of the pedestal defining a stepped groove with the first surface; The main rib beam is disposed in the stepped groove and is connected to the outer peripheral surface of the column and the first surface of the base plate; A rib beam assembly includes multiple secondary rib beams disposed within the stepped groove. Each of the multiple secondary rib beams is connected to the first surface. A first portion of the multiple secondary rib beams is connected to the main rib beam. The length direction of the first portion forms an angle with the length direction of the main rib beam to which it is connected. A second portion of the multiple secondary rib beams is connected to one of the main rib beam, the pedestal, and the first portion. The distance in the horizontal direction between any point on the first surface and at least one of the pedestal, the main rib beam, and the secondary rib beam is less than or equal to a preset value. The rib assembly includes a first-level secondary rib and a second-level secondary rib. The first-level secondary rib is connected to the wall surface of the main rib in the thickness direction, and the length direction of the first-level secondary rib forms an angle with the length direction of the main rib. The second-level secondary rib is connected to the wall surface of the first-level secondary rib in the thickness direction, and the length direction of the second-level secondary rib forms an angle with the length direction of the first-level secondary rib.

2. The wind turbine foundation according to claim 1, characterized in that, The column is located at the center of the first surface; There are multiple main rib beams, which are arranged at intervals along the circumference of the platform. The length direction of the main rib beams is consistent with the radial direction of the platform, and the rib beam assembly is provided on both sides of the thickness direction of the main rib beams. The height of the main rib beam gradually decreases along the direction away from the pedestal; The thickness of the main rib gradually decreases along the direction away from the pedestal; The maximum thickness of the secondary rib beam is less than the maximum thickness of the main rib beam. The maximum height of the secondary rib is less than the maximum height of the main rib.

3. The wind turbine foundation according to claim 2, characterized in that, The height of the first-level secondary rib gradually decreases along the direction away from the main rib connected to it; The thickness of the first-level secondary rib gradually decreases along the direction away from the main rib connected to it; The height of the second-level secondary rib gradually decreases along the direction away from the first-level secondary rib connected to it; The thickness of the second-level secondary rib gradually decreases along the direction away from the first-level secondary rib connected to it.

4. The wind turbine foundation according to claim 3, characterized in that, Multiple rib beam assemblies are provided on both sides of the main rib beam in the thickness direction, and the multiple rib beam assemblies are spaced apart along the length direction of the main rib beam to which they are connected. In the radial direction of the column, the maximum thickness of the first-level rib of the adjacent rib assembly is greater than the maximum thickness of the first-level rib of the distant rib assembly; and the maximum height of the first-level rib of the adjacent rib assembly is greater than the maximum height of the first-level rib of the distant rib assembly. In the radial direction of the column, the maximum thickness of the second-level secondary rib of the adjacent rib assembly is greater than the maximum thickness of the second-level secondary rib of the adjacent rib assembly that is farther from the column, and the maximum height of the second-level secondary rib of the adjacent rib assembly that is adjacent to the column is greater than the maximum height of the second-level secondary rib of the adjacent rib assembly that is farther from the column.

5. The wind turbine foundation according to claim 4, characterized in that, The main rib has a first end and a second end opposite to each other in the length direction. The first end is connected to the column. The height of the first end is greater than or equal to 1 meter and less than or equal to 5 meters. The thickness of the first end is greater than or equal to 1 meter and less than or equal to 2 meters. The thickness of the second end is greater than or equal to 0.3 meters and less than or equal to 1 meter. The first-level secondary rib has a third end and a fourth end opposite to each other in the length direction. The third end is connected to the main rib. The height of the third end is greater than or equal to 0.5 meters and less than or equal to 3 meters, and the thickness of the third end is greater than or equal to 0.5 meters and less than or equal to 0.8 meters. The thickness of the fourth end is greater than or equal to 0.2 meters and less than or equal to 0.5 meters. The second-level secondary rib has a fifth end and a sixth end opposite to each other in the length direction. The fifth end is connected to the first-level secondary rib. The height of the fifth end is greater than or equal to 0.3 meters and less than or equal to 2 meters. The thickness of the fifth end is greater than or equal to 0.2 meters and less than or equal to 0.5 meters. The thickness of the fourth end is greater than or equal to 0.15 meters and less than or equal to 0.3 meters. In the radial direction of the pedestal, the distance between the third end of the first-level secondary rib and the pedestal is greater than or equal to 1 meter, the distance between two adjacent third ends is greater than or equal to 2 meters, and the distance between the third end and the edge of the base plate is greater than or equal to 2 meters.

6. The wind turbine foundation according to claim 1, characterized in that, The distance between any point on the first surface and at least one of the column, the main rib, and the secondary rib in the horizontal direction is less than 0.2 meters.

7. The wind turbine foundation according to claim 2, characterized in that, The base plate has a second surface facing downwards, the second surface being a plane, and the thickness of the base plate gradually decreases along the direction away from the column.

8. The wind turbine foundation according to any one of claims 1-7, characterized in that, The column, the main rib beam, and the secondary rib beam are all reinforced with steel bars, and the column, the main rib beam, and the secondary rib beam are integrally formed.

9. A wind turbine generator set, characterized in that, Includes the wind turbine foundation as described in any one of claims 1-8.

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