A wind turbine foundation structure

Abstract

This utility model belongs to the field of wind power generation technology, and particularly relates to a wind power generation turbine foundation structure, including a foundation pit, which is opened on the ground for installing a concrete base; a concrete base, which includes a reinforcing cage and a filler, wherein the reinforcing cage is composed of a first steel frame and a second steel frame, and the filler is poured into the foundation pit for forming the concrete base; and a support base, which is fixedly installed on the top of the concrete base by multiple high-strength bolts, wherein multiple mounting holes for installing the wind turbine tower are opened on the outer edge of the top of the support base, and the multiple mounting holes are evenly distributed circumferentially around the center of the support base. This utility model's concrete base can maintain structural integrity even when subjected to the wind turbine's own weight and wind loads over a long period, thereby enhancing the overall load-bearing capacity of the wind turbine foundation structure.

Description

Technical Field

[0001] This utility model belongs to the field of wind power generation turbine technology, and in particular relates to a foundation structure for wind power generation turbines. Background Technology

[0002] With the global energy structure shifting towards clean energy, wind power, as a renewable and pollution-free energy source, has experienced rapid development. Wind power equipment typically needs to be installed in open outdoor areas, and its foundation structure, as a crucial component supporting the entire wind turbine, directly affects the turbine's stability, safety, and lifespan.

[0003] Through research and in-depth investigation, it has been found that the contact methods between the existing wind turbine foundation structures and the ground are relatively simple. Especially in soft soil foundations or areas with high wind speeds, this can easily lead to foundation settlement or tilting, affecting the normal operation of the wind turbine. Furthermore, after long-term bearing the weight of the wind turbine and wind loads, the connection points may loosen or be damaged, affecting the long-term stable operation of the wind turbine. Therefore, there is an urgent need to improve the existing wind turbine foundation structures and provide a new type of wind turbine foundation structure. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by providing a wind turbine foundation structure that is reasonably designed, simple in structure, highly stable, and has strong support, thereby solving the problems existing in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A wind turbine foundation structure, comprising:

[0007] The foundation pit is located on the ground and is used to install a concrete base.

[0008] A concrete base, comprising a reinforcing cage and a pouring filler, wherein the reinforcing cage is composed of a first steel frame and a second steel frame, and the pouring filler is poured into the foundation pit for the molding of the concrete base.

[0009] The support base is fixedly installed on the top of the concrete base by a plurality of high-strength bolts. The top outer edge of the support base is provided with a plurality of mounting holes for installing the wind turbine tower. The plurality of mounting holes are evenly distributed in a circle around the center of the support base.

[0010] The reinforcement components are fixedly connected at both ends to the concrete base and the support seat, respectively, and multiple sets of the reinforcement components are distributed in a ring around the center of the support seat.

[0011] In one preferred embodiment, the first steel frame includes multiple long vertical ribs evenly distributed around the circumference. A reinforcing rib is fixed inside the long vertical rib by welding. The reinforcing rib has a cross-section in the shape of an "*" and is arranged at equal intervals along the length of the long vertical rib.

[0012] In a preferred embodiment, the second steel frame corresponds one-to-one with the plurality of long vertical ribs. The second steel frame includes two horizontal ribs welded and fixed to the long vertical ribs. The two horizontal ribs are on the same vertical plane and a short vertical rib is welded and fixed between the ends of the two horizontal ribs that are away from the long vertical ribs. Each of the two horizontal ribs is provided with a reinforcing rib on the side that is away from each other.

[0013] In a preferred embodiment, the second reinforcing rib is ring-shaped and fixed to the corresponding transverse rib by either welding or wire binding.

[0014] In a preferred embodiment, the filler material is a mixture of concrete and crushed stone.

[0015] In a preferred embodiment, the reinforcement component includes a reinforcement brace, a contact plate, and two high-strength bolts. The two contact plates are respectively fixed to the outer surfaces of the concrete base and the support seat by the two high-strength bolts. The reinforcement brace is fixedly installed between the two contact plates and has an inverted "Y" shape.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] In the solution of this utility model:

[0018] The reinforcing cage forms a stable skeleton structure in the concrete foundation, effectively improving the overall tensile and shear resistance of the concrete foundation. Moreover, the mesh structure of the reinforcing cage can effectively distribute the upper load borne by the concrete foundation, avoiding structural cracking caused by local stress concentration. This allows the concrete foundation to maintain structural integrity even when bearing the self-weight of the wind turbine and wind loads for a long time. At the same time, the pouring of filler material facilitates the full filling of the reinforcing cage and the gap between it and the foundation pit, further improving the density and structural strength of the concrete foundation. This provides a stable foundation for the subsequent installation of components such as support seats, thereby enhancing the overall load-bearing capacity of the wind turbine foundation structure and providing stronger support.

[0019] The concrete base is cast in a concrete pour, which allows it to work better with the surrounding soil, enhancing the foundation's resistance to settlement. Furthermore, the use of multiple sets of reinforcing components arranged in a ring further strengthens the stability of the support base during installation and operation, providing a solid guarantee for the long-term stable operation of the wind turbine. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. The drawings are described as follows:

[0021] Figure 1 This is a front view structural diagram of the present invention;

[0022] Figure 2 This is a schematic diagram of the steel cage installation structure of this utility model;

[0023] Figure 3 This is a three-dimensional structural diagram of the reinforcing diagonal brace installation of this utility model;

[0024] Figure 4 This is a schematic diagram of the three-dimensional structure of the steel cage of this utility model;

[0025] Figure 5 This is a three-dimensional structural diagram of the long vertical rib and the first reinforcing rib of this utility model;

[0026] Figure 6 This is a three-dimensional structural diagram of the horizontal rib and the second reinforcing rib of this utility model.

[0027] In the picture:

[0028] 1. Ground; 2. Foundation pit; 3. Concrete base; 4. Support seat; 5. High-strength bolt one; 6. Reinforcing diagonal brace; 7. Contact plate; 8. High-strength bolt two; 9. Long vertical bar; 10. Reinforcing bar one; 11. Horizontal bar; 12. Short vertical bar; 13. Reinforcing bar two; 14. Mounting hole. Detailed Implementation

[0029] The embodiments described below are merely some embodiments of the present invention and do not represent all embodiments consistent with the present invention. Exemplary embodiments will now be described with reference to the accompanying drawings:

[0030] like Figures 1-6 As shown, the wind turbine foundation structure of this utility model includes:

[0031] Pit 2, which is located on the ground surface 1, is used to install the concrete base 3;

[0032] The concrete base 3 includes a reinforcing cage and a cast-in-place filler. The reinforcing cage is composed of a first steel frame and a second steel frame. The cast-in-place filler is poured into the foundation pit 2 for the molding of the concrete base 3.

[0033] Support base 4 is fixedly installed on the top of concrete base 3 by multiple high-strength bolts 5. Multiple mounting holes 14 for installing wind turbine tower are opened at the outer edge of the top of support base 4. The multiple mounting holes 14 are evenly distributed around the center of support base 4.

[0034] The reinforcing components are fixedly connected at both ends to the concrete base 3 and the support 4, respectively, and multiple sets of reinforcing components are distributed in a ring around the center of the support 4.

[0035] Based on the above structure, the first steel frame includes multiple long vertical ribs 9 that are evenly distributed around the circumference. Reinforcing ribs 10 are fixed inside the long vertical ribs 9 by welding. The cross-section of the reinforcing ribs 10 is "*" shaped and multiple ribs are evenly spaced along the length of the long vertical ribs 9.

[0036] Based on the above structure, the second steel frame corresponds one-to-one with multiple long vertical ribs 9. The second steel frame includes two horizontal ribs 11 welded and fixed to the long vertical ribs 9. The two horizontal ribs 11 are on the same vertical plane and a short vertical rib 12 is welded and fixed between the ends of the two horizontal ribs away from the long vertical ribs 9. Each side of the two horizontal ribs 11 that is away from each other is provided with a reinforcing rib 13.

[0037] Based on the above structure, the reinforcing rib 2 13 is in the shape of a ring and is fixed to the corresponding transverse rib 11 by either welding or wire binding.

[0038] In this embodiment, the steel cage composed of the first steel frame and the second steel frame can form a stable skeleton structure in the concrete base 3, effectively improving the overall tensile and shear resistance of the concrete base 3. Moreover, the mesh structure of the steel cage can effectively disperse the upper load borne by the concrete base 3, avoiding structural cracking caused by local stress concentration.

[0039] Based on the above structure, the filling material is a mixture of concrete and crushed stone.

[0040] In this embodiment, pouring filler material facilitates the full filling of the reinforcing cage and the gap between it and the foundation pit 2, further improving the density and structural strength of the concrete base 3, and providing a stable foundation for the subsequent installation of the support 4.

[0041] Based on the above structure, the reinforcement components include a reinforcement brace 6, a contact plate 7, and a second high-strength bolt 8. The two contact plates 7 are fixed to the outer surfaces of the concrete base 3 and the support seat 4 respectively by the second high-strength bolt 8. The reinforcement brace 6 is fixedly installed between the two contact plates 7 and has an inverted "Y" shaped structure.

[0042] In this embodiment, the use of multiple sets of reinforcing components arranged in a ring can further enhance the installation and operational stability of the support base 4, providing a solid guarantee for the long-term stable operation of the wind turbine.

[0043] The working principle of this utility model is as follows:

[0044] In use, a steel reinforcement cage is first constructed by combining long vertical bars 9, reinforcing bars 10, horizontal bars 11, short vertical bars 12, and reinforcing bars 2 13, and then lowered into the pre-excavated foundation pit 2 on ground 1. Subsequently, a casting formwork is installed on ground 1, and concrete and gravel filling material is poured into the foundation pit 2 until a shape is formed as described above. Figure 1 and Figure 3 The concrete base 3 shown in the figure is cast in a way that allows the concrete base 3 to work better with the surrounding foundation soil, thereby enhancing the anti-settlement capacity of the foundation structure. Then, the support base 4 is fixedly installed on the top of the concrete base 3 with multiple high-strength bolts 5, and multiple sets of reinforcement components are installed in a ring around the support base 4. The reinforcement diagonal brace 6 can further enhance the installation and working stability of the support base 4, providing a solid guarantee for the long-term stable operation of the wind turbine.

[0045] The reinforcing cage forms a stable skeleton structure in the concrete base 3, effectively improving the overall tensile and shear resistance of the concrete base 3. Moreover, the mesh structure of the reinforcing cage can effectively disperse the upper load borne by the concrete base 3, avoiding structural cracking caused by local stress concentration. This allows the concrete base 3 to maintain structural integrity even when bearing the wind turbine's self-weight and wind loads for a long time. At the same time, the pouring of filler material facilitates the full filling of the reinforcing cage and the gap between it and the foundation pit 2, further improving the density and structural strength of the concrete base 3. This provides a stable foundation for the subsequent installation of components such as the support base 4, thereby enhancing the overall load-bearing capacity of the wind turbine foundation structure and providing stronger support.

[0046] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Any equivalent changes, modifications, substitutions, and variations made by those skilled in the art based on the concept of this utility model and on the basis of existing technology through logical analysis, reasoning, or limited experiments shall be within the scope of protection defined by the claims.

Claims

1. A foundation structure for a wind turbine, characterized in that, include: Foundation pit (2), which is opened on the ground (1) for installing concrete base (3); The concrete base (3) includes a reinforcing cage and a pouring filler. The reinforcing cage is composed of a first steel frame and a second steel frame. The pouring filler is poured into the foundation pit (2) for the formation of the concrete base (3). Support base (4), the support base (4) is fixedly installed on the top of the concrete base (3) by a plurality of high-strength bolts (5), and a plurality of mounting holes (14) for installing the wind turbine tower are provided at the outer edge of the top of the support base (4), and the plurality of mounting holes (14) are evenly distributed around the center of the support base (4). The reinforcing components are fixedly connected at both ends to the concrete base (3) and the support seat (4) respectively, and multiple sets of the reinforcing components are distributed in a ring around the center of the support seat (4).

2. The wind turbine foundation structure according to claim 1, characterized in that: The first steel frame includes multiple long vertical ribs (9) evenly distributed around the circumference. A reinforcing rib (10) is fixed inside the long vertical rib (9) by welding. The cross-section of the reinforcing rib (10) is "*" shaped and multiple ribs are evenly spaced along the length of the long vertical rib (9).

3. The wind turbine foundation structure according to claim 2, characterized in that: The second steel frame corresponds one-to-one with the multiple long vertical ribs (9). The second steel frame includes two horizontal ribs (11) welded and fixed on the long vertical ribs (9). The two horizontal ribs (11) are on the same vertical plane and a short vertical rib (12) is welded and fixed between the ends of the two horizontal ribs away from the long vertical ribs (9). Each of the two horizontal ribs (11) is provided with a reinforcing rib (13) on the side that is away from each other.

4. The wind turbine foundation structure according to claim 3, characterized in that: The second reinforcing rib (13) is in the shape of a ring and is fixed to the corresponding transverse rib (11) by either welding or wire binding.

5. The wind turbine foundation structure according to claim 1, characterized in that: The filling material is a mixture of concrete and crushed stone.

6. The wind turbine foundation structure according to claim 1, characterized in that: The reinforcement component includes a reinforcement brace (6), a contact plate (7), and a second high-strength bolt (8). The two contact plates (7) are fixed to the outer surfaces of the concrete base (3) and the support seat (4) respectively by the second high-strength bolt (8). The reinforcement brace (6) is fixedly installed between the two contact plates (7). The reinforcement brace (6) has an inverted "Y" shaped structure.

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