Wind turbine foundation structure

Abstract

The utility model relates to the field of wind power construction, concretely is wind turbine generator system foundation structure. It includes central cylinder frame, extension frame, prestressed anchor bolt subassembly and concrete structure, central cylinder frame includes along the vertical direction and side distribution multiple sets of ring cover subassembly and around ring cover subassembly even distribution multiple vertical bars, extension frame includes multiple coaxial distribution lower ring muscle and upper ring muscle and around central cylinder frame even distribution multiple extension pieces, lower ring muscle and upper ring muscle are all toroidal structure, multiple lower ring muscle and multiple upper ring muscle diameter all gradually increase along the direction away from central cylinder frame, extension piece includes trapezoidal muscle one, connecting hook one, stopper hook one and stopper hook two, multiple connecting hook one hooks on multiple sets of ring cover subassembly, lower ring muscle is packed between trapezoidal muscle one and stopper hook one, upper ring muscle is packed between trapezoidal muscle one and stopper hook two. The utility model can position the installation position of lower ring muscle and upper ring muscle, and can reduce the iron wire binding step, improves construction efficiency.

Description

Technical Field

[0001] This utility model relates to the field of wind power construction, and in particular to the foundation structure of wind turbine units. Background Technology

[0002] In the construction of wind turbine foundations, large reinforced concrete extended foundations are often used, and prestressed anchor bolts are used as transitional components connecting the tower and the foundation to ensure the safe and stable operation of the wind turbine. In the wind power foundation structure, the reinforcement mainly plays a load-bearing role, and then the formwork is erected and concrete is poured on the reinforcement inside the formwork.

[0003] Chinese Patent Publication No. CN212248334U discloses a reinforcement structure for a wind turbine foundation, including bottom slab reinforcement and anti-torsional reinforcement arranged circumferentially outside the central cylinder of the prestressed anchor bolts. The bottom slab reinforcement includes first circumferential reinforcement and first radial reinforcement tied together to form the bottom structure of the annular column. The anti-torsional reinforcement includes second circumferential reinforcement and second radial reinforcement tied together to form the side structure of the annular column. This reinforcement structure is applicable to the structural construction of wind turbine foundations, used to improve the stability of the wind turbine foundation structure and ensure the safe and stable operation of the wind turbine.

[0004] However, the above technical solution has the following shortcomings: In both the bottom slab reinforcement and the anti-torsion reinforcement, multiple circumferential reinforcements and multiple radial reinforcements need to be tied together with wire at the contact points. There are many tying points, which takes a long time. In addition, the installation position of the circumferential reinforcements is not easy to locate, which affects the construction efficiency. Utility Model Content

[0005] The purpose of this utility model is to address the problems existing in the background technology by proposing a wind turbine foundation structure that can locate the installation positions of the lower and upper ring reinforcement bars, reduce the wire binding steps, and improve construction efficiency.

[0006] The technical solution of this utility model relates to a wind turbine foundation structure, comprising a central cylindrical frame, an outer extension frame, prestressed anchor bolt assemblies, and a concrete structure. The central cylindrical frame includes multiple sets of ring assemblies arranged side-by-side in the vertical direction, and multiple sets of vertical ribs evenly distributed around the ring assemblies. The outer extension frame includes multiple coaxially distributed lower and upper ring ribs, and multiple outer extension members evenly distributed around the central cylindrical frame. Both the lower and upper ring ribs are circular ring structures, and the diameters of the multiple lower and upper ring ribs gradually increase away from the central cylindrical frame. The outer extension members include a trapezoidal rib, a connecting hook, and a retaining hook. The trapezoidal reinforcement 1 is inclined downwards along the direction away from the central tube frame. Multiple connecting hooks 1 are arranged side by side in the vertical direction on the side of the trapezoidal reinforcement 1 near the central tube frame. Multiple connecting hooks 1 are hooked onto multiple sets of ring assemblies. Multiple stop hooks 1 are arranged side by side at the lower part of the trapezoidal reinforcement. The lower ring reinforcement is clamped between the trapezoidal reinforcement 1 and the stop hook 1. Multiple stop hooks 2 are arranged side by side at the upper part of the trapezoidal reinforcement 1. The upper ring reinforcement is clamped between the trapezoidal reinforcement 1 and the stop hook 2. The prestressed anchor bolt assembly is set on the upper part of the vertical reinforcement. The concrete structure is poured on the central tube frame and the outer extension frame, exposing the upper part of the prestressed anchor bolt assembly.

[0007] Preferably, the ring assembly includes an outer ring reinforcement, an inner ring reinforcement coaxially distributed inside the outer ring reinforcement, and a connector with both ends hooked onto the outer ring reinforcement and the inner ring reinforcement, respectively. The connector is an "S"-shaped steel bar, with both ends welded to the outer ring reinforcement and the inner ring reinforcement, respectively.

[0008] Preferably, the vertical reinforcement includes vertical reinforcement 1 and multiple vertical reinforcement 2. Vertical reinforcement 1 and vertical reinforcement 2 are both vertically distributed and correspond one to one. Vertical reinforcement 1 is located outside vertical reinforcement 2. Vertical reinforcement 1 is tied to the connection between the outer ring reinforcement and the connector. Vertical reinforcement 2 is tied to the connection between the inner ring reinforcement and the connector.

[0009] Preferably, it also includes multiple sets of reinforcing frames evenly distributed around the central tube frame. Each reinforcing frame includes two upper protrusions distributed in a fan shape in the projection direction and multiple connecting ribs tied to the top of the two upper protrusions. Each upper protrusion includes trapezoidal rib II, connecting hook II, and stop hook III. The upper and lower parts of trapezoidal rib II are inclined downwards in the direction away from the central tube frame. The inclination of the upper part of trapezoidal rib II is greater than that of the lower part. The inclination of the lower part of trapezoidal rib II is the same as that of the upper part of trapezoidal rib I. Multiple connecting hooks II are arranged side by side in the vertical direction on the side of trapezoidal rib II near the central tube frame. Multiple connecting hooks II are hooked onto multiple sets of ring assemblies. Multiple stop hooks III are arranged side by side at the bottom of trapezoidal rib II. The upper ring rib is clamped between trapezoidal rib II and stop hook III.

[0010] Preferably, both connecting hook one and connecting hook two are "J" shaped structures, and the "J" shaped openings are all oriented away from the central axis of the central tube frame. Both stop hook one, stop hook two and stop hook three are "L" shaped structures, and the "L" shaped openings of stop hook one and stop hook two are oriented towards the central axis of the central tube frame, while the "L" shaped opening of stop hook three is oriented away from the central axis of the central tube frame.

[0011] Preferably, the extension part further includes a plurality of vertically distributed reinforcing ribs I, the length of which gradually decreases along the direction away from the central tube frame, and the two ends of the reinforcing ribs I in the vertical direction are respectively welded to the top and bottom of the trapezoidal ribs I. The upper protrusion also includes a plurality of vertically distributed reinforcing ribs II, the length of which gradually decreases along the direction away from the central tube frame, and the two ends of the reinforcing ribs II in the vertical direction are respectively welded to the top and bottom of the trapezoidal ribs II.

[0012] Preferably, the concrete structure includes an integrally cast central column, a conical platform, and a reinforcing platform, with the central column covering the central tube frame, the conical platform covering the outer extension frame, and the reinforcing platform covering the reinforcing frame.

[0013] Compared with the prior art, this utility model has the following beneficial technical effects: This utility model can locate the installation positions of the lower and upper ring reinforcement bars, and can reduce the wire binding steps, thus improving construction efficiency. The ring assembly and the outer extension are prefabricated in the factory, and the related structures do not require wire binding at the hook points, simplifying construction steps and improving the construction efficiency of the wind turbine foundation structure. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model; Figure 2 This is a schematic diagram of the structure of this utility model without concrete pouring. Figure 3 This is a structural diagram of the present invention without the upper protrusion connected. Figure 4 This is a schematic diagram of the structure of this utility model without the extension component connected. Figure 5 for Figure 4 Enlarged view of the structure at point A in the middle; Figure 6 This is a schematic diagram of the structure in which the extension part is hooked onto the outer ring rib via a connecting hook. Figure 7 This is a schematic diagram of the structure in which the lower and upper ring bars are installed on the extension part. Figure 8 A schematic diagram of a structure in which two upper protrusions are connected by a connecting rib; Figure 9 This is a schematic diagram showing the connection between the upper protrusion and the outer and upper ring ribs.

[0015] Reference numerals: 1. Outer ring reinforcement; 2. Inner ring reinforcement; 3. Connector; 4. Vertical reinforcement 1; 5. Vertical reinforcement 2; 6. Extension; 60. Trapezoidal reinforcement 1; 61. Connecting hook 1; 62. Stop hook 1; 63. Stop hook 2; 64. Reinforcing reinforcement 1; 7. Lower ring reinforcement; 8. Upper ring reinforcement; 9. Upper protrusion; 90. Trapezoidal reinforcement 2; 91. Connecting hook 2; 92. Stop hook 3; 93. Reinforcing reinforcement 2; 10. Connecting reinforcement; 11. Concrete structure; 111. Central column; 112. Conical platform; 113. Reinforcing platform; 12. Anchor plate; 13. Anchor bolt. Detailed Implementation

[0016] Example 1: As Figures 1-7 As shown, the wind turbine foundation structure proposed in this embodiment includes a central tube frame, an outer extension frame, a prestressed anchor bolt assembly, and a concrete structure 11.

[0017] The central frame comprises multiple sets of ring-shaped assemblies arranged side-by-side along the vertical direction, and multiple sets of vertical reinforcing bars evenly distributed around the ring-shaped assemblies. Each ring-shaped assembly includes an outer ring reinforcing bar 1, an inner ring reinforcing bar 2 coaxially distributed inside the outer ring reinforcing bar 1, and connectors 3 hooked at both ends to the outer ring reinforcing bar 1 and the inner ring reinforcing bar 2, respectively. Connectors 3 are S-shaped steel bars, with both ends welded to the outer ring reinforcing bar 1 and the inner ring reinforcing bar 2. Both the outer ring reinforcing bar 1 and the inner ring reinforcing bar 2 are formed by bending straight steel bars, passing them through the inner sides of both ends of connectors 3 during bending. Then, the two ends of the outer ring reinforcing bar 1 are welded, the two ends of the inner ring reinforcing bar 2 are welded, and the two ends of connectors 3 are welded to the outer ring reinforcing bar 1 and the inner ring reinforcing bar 2, thus obtaining a prefabricated ring-shaped assembly manufactured in the factory. The required number of ring-shaped assemblies are transported to the wind turbine foundation construction site for on-site installation.

[0018] like Figure 4 and Figure 5 As shown, the vertical reinforcement includes vertical reinforcement 4 and multiple vertical reinforcement 5. Vertical reinforcement 4 and vertical reinforcement 5 are vertically distributed and correspond one-to-one. Vertical reinforcement 4 is located outside vertical reinforcement 5 and is tied to the connection between the outer ring reinforcement 1 and the connector 3. That is, these three parts are tied together with wire. Vertical reinforcement 5 is tied to the connection between the inner ring reinforcement 2 and the connector 3. Similarly, these three parts are also tied together with wire. The final result is a central tube frame with high structural strength, and the construction procedure of the central tube frame is simplified and more efficient.

[0019] The outer frame includes multiple coaxially distributed lower ring ribs 7 and upper ring ribs 8, and multiple outer extension parts 6 evenly distributed around the central tube frame. Both the lower ring ribs 7 and upper ring ribs 8 are circular ring structures, coaxially distributed around the periphery of the central tube frame. The diameters of the multiple lower ring ribs 7 and multiple upper ring ribs 8 gradually increase in the direction away from the central tube frame, i.e., they are distributed radially at multiple points. The outer extension parts 6 include trapezoidal rib 1 60, connecting hook 1 61, stop hook 1 62, and stop hook 2 63. The upper part of trapezoidal rib 1 60 slopes downwards in the direction away from the central tube frame, while the bottom is horizontal. Trapezoidal rib 1 60 is a trapezoidal steel bar, obtained by bending straight steel bars and then welding both ends. Connecting hook 1 61, stop hook 1 62, and stop hook 2 63 are welded to various parts, enabling prefabrication in the factory. Multiple connecting hooks 61 are arranged vertically side by side on the side of the trapezoidal rib 60 near the central tube frame. These hooks 61 are hooked onto multiple sets of ring assemblies, specifically onto the outer ring rib 1. Multiple stop hooks 62 are arranged side by side at the lower part of the trapezoidal rib 60. The lower ring rib 7 is clamped between the trapezoidal rib 60 and the stop hooks 62. The lower ring rib 7 is formed by bending straight steel bars along the distribution of the multiple stop hooks 62, ultimately resulting in a ring-shaped lower ring rib 7. The two ends of the lower ring rib 7 are then tied or welded. This allows for clamping of the lower ring rib 7 at multiple points. On one hand, the stop hooks 62 are used to position the lower ring rib 7 during installation; on the other hand, it improves the reliability of the connection structure. Multiple hooks 2 63 are arranged side by side on the upper part of trapezoidal bar 1 60. The upper ring bar 8 is clamped between trapezoidal bar 1 60 and hook 2 63. Similarly, the upper ring bar 8 is made by bending straight steel bars along the distribution of multiple hooks 2 63. Then the two ends of the upper ring bar 8 are tied or welded. The upper ring bar 8 can be clamped in multiple places, and the installation of the upper ring bar 8 can also be positioned, thereby improving the reliability of the connection structure.

[0020] like Figure 6 As shown, connecting hook 61 has a "J" shaped structure, with the "J" shaped opening facing away from the central axis of the central tube frame. Connecting hook 61 can extend from above the outer ring rib 1, then descend and move outward, hooking onto the corresponding outer ring rib 1. Next, the annular lower ring rib 7 and upper ring rib 8 are installed. Stop hook 62 and stop hook 63 both have an "L" shaped structure, with their "L" shaped openings facing the central axis of the central tube frame. The stop hooks can position and limit the lower ring rib 7 and upper ring rib 8, preventing them from detaching outward.

[0021] Furthermore, the extension part 6 also includes a plurality of vertically distributed reinforcing ribs 64. The length of the plurality of reinforcing ribs 64 gradually decreases along the direction away from the central tube frame. The two ends of the reinforcing ribs 64 in the vertical direction are respectively welded to the top and bottom of the trapezoidal ribs 60. The reinforcing ribs 64 are used to improve the structural strength of the entire extension part 6.

[0022] like Figure 1As shown, the prestressed anchor bolt assembly is located on the upper part of the vertical reinforcement, that is, it is fixedly installed on the upper part of the central tube frame. The prestressed anchor bolt assembly includes a circular anchor plate 12 and a plurality of anchor bolts 13 evenly arranged around the central axis on the anchor plate 12.

[0023] The concrete structure 11 is poured on the central tube frame and the outer extension frame, exposing the upper part of the prestressed anchor bolt assembly, with the anchor bolt 13 protruding from the top. When installing the wind turbine tower, the pre-drilled hole at the bottom of the tower is passed through the anchor bolt 13, and then a nut is screwed onto the anchor bolt 13 to fix the tower.

[0024] This embodiment can locate the installation positions of the lower ring reinforcement 7 and the upper ring reinforcement 8, and can reduce the wire binding steps, thus improving construction efficiency. Both the ring assembly and the outer extension 6 are prefabricated in the factory. At the construction site of the wind turbine foundation structure, the outer ring reinforcement 1 in the ring assembly is hooked to the outer extension 6 in the outer extension frame. The lower ring reinforcement 7 and the upper ring reinforcement 8 are also positioned and hooked together using hooks, saving positioning time during installation. Furthermore, no wire binding is required at the hooking points, simplifying construction steps and improving the construction efficiency of the wind turbine foundation structure.

[0025] Example 2: Figures 1-9As shown, the wind turbine foundation structure proposed in this embodiment, compared to Embodiment 1, further includes multiple sets of reinforcing frames evenly distributed around the central tube frame, such as six or eight sets. Each reinforcing frame includes two upper protrusions 9 arranged in a fan shape in the projection direction and multiple connecting ribs 10 tied to the top of the two upper protrusions 9. Each upper protrusion 9 includes a trapezoidal rib 90, a connecting hook 91, a retaining hook 92, and a reinforcing rib 93. The upper and lower parts of the trapezoidal rib 90 are both inclined downwards away from the central tube frame, with the upper part of the trapezoidal rib 90 exhibiting a greater inclination than the lower part; that is, the angle between the upper part of the trapezoidal rib 90 and the horizontal plane is greater than the angle between the lower part and the horizontal plane, resulting in a wedge-shaped distribution. Trapezoidal reinforcement 290 is a trapezoidal steel bar, formed by bending straight steel bars and welding both ends. After welding connecting hook 291, stop hook 392, and reinforcing rib 293 to various parts, a complete upper protrusion is obtained, enabling prefabrication in the factory. The required number of upper protrusions will be transported to the construction site according to the construction needs of the wind turbine foundation. The lower inclination of trapezoidal reinforcement 290 is the same as the upper inclination of trapezoidal reinforcement 160, facilitating subsequent hooking onto the shared upper ring reinforcement 8. Multiple connecting hooks 291 are arranged vertically side-by-side on the side of trapezoidal reinforcement 290 near the central tube frame. Multiple connecting hooks 291 hook onto multiple sets of ring assemblies, specifically hooking onto the outer ring reinforcement 1; no binding wire is required here. Multiple stop hooks 392 are arranged side-by-side at the bottom of trapezoidal reinforcement 290, and the upper ring reinforcement 8 is clamped between trapezoidal reinforcement 290 and stop hook 392. When installing the upper protrusion 9, first insert the second connecting hook 91 into the inner side of the central cylinder frame, then move the upper protrusion 9 outward in a downward inclined direction, hooking the second connecting hook 91 onto the outer ring rib 1, and hooking the third blocking hook 92 onto the upper ring rib 8. This positions and limits the installation of the upper protrusion 9, and it is not necessary to tie wires when the third blocking hook 92 is hooked onto the upper ring rib 8. The upper protrusion 9 and the outer extension 6 are staggered, so there will be no structural interference. After the upper protrusion 9 is installed in place, tie the connecting rib 10 to the two adjacent upper protrusions 9 with wires.

[0026] like Figure 8 As shown, connecting hook 2 91 has a "J" shaped structure, and the "J" shaped opening faces away from the central axis of the central tube frame, so it can be smoothly hooked onto the outer ring rib 1. Stop hook 3 92 has an "L" shaped structure, and the "L" shaped opening of stop hook 3 92 faces away from the central axis of the central tube frame, so it can be hooked onto the upper ring rib 8.

[0027] like Figure 8As shown, reinforcing ribs 93 are vertically distributed, with multiple ribs arranged side-by-side along the direction away from the central tube frame. The length of the multiple reinforcing ribs 93 gradually decreases along the direction away from the central tube frame. The two ends of the reinforcing ribs 93 in the vertical direction are welded to the top and bottom of the trapezoidal ribs 90, respectively, thereby improving the structural strength of the entire upper protrusion 9. In addition, the connecting ribs 10 can be tied to the top of the reinforcing ribs 93 and the welded joint of the trapezoidal ribs 90. The tying effect is reliable, and the tying position of the connecting ribs 10 is also indicated and positioned, saving tying time.

[0028] The concrete structure 11 includes an integrally cast central column 111, a conical platform 112, and a reinforcing platform 113. The central column 111 covers the central tube frame and also covers the periphery of the anchor plate 12 in the prestressed anchor bolt assembly, but does not cover the top anchor bolt 13. The conical platform 112 covers the outer extension frame, and the reinforcing platform 113 covers the reinforcing frame.

[0029] This embodiment improves the structural strength of the entire foundation structure by adding reinforcing frames. There is no need to add steel bars and pour concrete between adjacent reinforcing frames. While ensuring the overall structural strength, it reduces the amount of materials used, reduces the material cost of the foundation structure and construction time, saves labor, and improves construction efficiency.

[0030] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A wind turbine foundation structure, characterized in that, include: The central tube frame includes multiple sets of ring assemblies arranged side by side along the vertical direction, and multiple sets of vertical ribs evenly distributed around the ring assemblies; The outer frame includes multiple coaxially distributed lower ring ribs (7) and upper ring ribs (8), and multiple outer extensions (6) evenly distributed around the central tube frame. The lower ring ribs (7) and upper ring ribs (8) are both circular ring structures. The diameters of the multiple lower ring ribs (7) and multiple upper ring ribs (8) gradually increase in the direction away from the central tube frame. The outer extension (6) includes trapezoidal rib one (60), connecting hook one (61), stop hook one (62), and stop hook two (63). The upper part of trapezoidal rib one (60) is downward in the direction away from the central tube frame. Inclined, multiple connecting hooks (61) are arranged side by side in the vertical direction on the side of trapezoidal rib (60) near the central tube frame. Multiple connecting hooks (61) are hooked onto multiple sets of ring sleeve components. Multiple stop hooks (62) are arranged side by side at the lower part of trapezoidal rib (60). The lower ring rib (7) is clamped between trapezoidal rib (60) and stop hook (62). Multiple stop hooks (63) are arranged side by side at the upper part of trapezoidal rib (60). The upper ring rib (8) is clamped between trapezoidal rib (60) and stop hook (63). Prestressed anchor bolt assembly, installed on the upper part of the vertical reinforcement; The concrete structure (11) is poured on the central tube frame and the outer extension frame, exposing the upper part of the prestressed anchor bolt assembly.

2. The wind turbine foundation structure according to claim 1, characterized in that, The ring assembly includes an outer ring bar (1), an inner ring bar (2) coaxially distributed inside the outer ring bar (1), and a connector (3) with its two ends hooked onto the outer ring bar (1) and the inner ring bar (2) respectively. The connector (3) is an "S" shaped steel bar, with its two ends welded to the outer ring bar (1) and the inner ring bar (2) respectively.

3. The wind turbine foundation structure according to claim 2, characterized in that, The vertical reinforcement includes vertical reinforcement 1 (4) and multiple vertical reinforcement 2 (5). Vertical reinforcement 1 (4) and vertical reinforcement 2 (5) are vertically distributed and correspond one to one. Vertical reinforcement 1 (4) is located outside vertical reinforcement 2 (5). Vertical reinforcement 1 (4) is tied to the connection between the outer ring reinforcement (1) and the connector (3). Vertical reinforcement 2 (5) is tied to the connection between the inner ring reinforcement (2) and the connector (3).

4. The wind turbine foundation structure according to claim 1, characterized in that, It also includes multiple sets of reinforcing frames evenly distributed around the central tube frame. The reinforcing frame includes two upper protrusions (9) distributed in a fan shape in the projection direction and multiple connecting ribs (10) tied to the top of the two upper protrusions (9). The upper protrusions (9) include trapezoidal rib two (90), connecting hook two (91) and stop hook three (92). The upper and lower parts of trapezoidal rib two (90) are inclined downwards in the direction away from the central tube frame. The inclination of the upper part of trapezoidal rib two (90) is greater than that of the lower part. The inclination of the lower part of trapezoidal rib two (90) is the same as that of the upper part of trapezoidal rib one (60). Multiple connecting hooks two (91) are arranged in parallel in the vertical direction on the side of trapezoidal rib two (90) close to the central tube frame. Multiple connecting hooks two (91) are hooked on multiple sets of ring assemblies. Multiple stop hooks three (92) are arranged in parallel at the bottom of trapezoidal rib two (90). The upper ring rib (8) is clamped between trapezoidal rib two (90) and stop hook three (92).

5. The wind turbine foundation structure according to claim 4, characterized in that, Both connecting hook 1 (61) and connecting hook 2 (91) are "J" shaped structures, and the "J" shaped openings are all facing away from the central axis of the central tube frame. Both blocking hook 1 (62), blocking hook 2 (63) and blocking hook 3 (92) are "L" shaped structures, and the "L" shaped openings of blocking hook 1 (62) and blocking hook 2 (63) face the central axis of the central tube frame, while the "L" shaped opening of blocking hook 3 (92) faces away from the central axis of the central tube frame.

6. The wind turbine foundation structure according to claim 4, characterized in that, The extension part (6) also includes a plurality of vertically distributed reinforcing ribs I (64), the length of which gradually decreases along the direction away from the central tube frame, and the two ends of the reinforcing ribs I (64) in the vertical direction are respectively welded to the top and bottom of the trapezoidal rib I (60). The upper protrusion (9) also includes a plurality of vertically distributed reinforcing ribs II (93), the length of which gradually decreases along the direction away from the central tube frame, and the two ends of the reinforcing ribs II (93) in the vertical direction are respectively welded to the top and bottom of the trapezoidal rib II (90).

7. The wind turbine foundation structure according to claim 4, characterized in that, The concrete structure (11) includes a central column (111), a conical platform (112), and a reinforcing platform (113) cast in one piece. The central column (111) covers the central tube frame, the conical platform (112) covers the outer extension frame, and the reinforcing platform (113) covers the reinforcing frame.

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