Fan foundation and wind generating set

Abstract

The invention provides a fan foundation and a wind generating set, the fan foundation comprises a base body and an anchoring mechanism, the base body is supported on the foundation and is at least partially buried in the foundation, the anchoring mechanism comprises an anchoring unit and a first anchor bolt, the anchoring unit is connected between the foundation and the base body, the anchoring unit comprises a main beam and a pressure-bearing column, and the main beam is connected with the first anchor bolt. The main beam is connected to the base body, at least part of the main beam extends into backfill materials of the foundation, the pressure-bearing column is connected to the main beam and extends into the foundation, and the two ends of the first anchor bolt are connected to the pressure-bearing column and the base body respectively. When the fan foundation has an overturning trend, the main beam extending into one side of the backfill material tends to be lifted, and the weight of the backfill material can resist lifting of the main beam on one side of the main beam which tends to be lifted due to the fact that the main beam in the anchoring unit extends into the backfill material of the foundation. And one side of the main beam which tends to be pressed down extends into the foundation due to the anchoring unit, so that the main beam is not easy to slip, overturning can be blocked, and the fan foundation has relatively strong anti-overturning capability.

Description

Technical Field

[0001] This application relates to the technical field of wind power generation, and particularly relates to a wind turbine foundation and a wind turbine generator set. Background Art

[0002] As a clean energy source, wind energy has attracted more and more attention. With the continuous development of the wind power generation industry, the single-unit capacity of wind turbine generator sets has been increasing, and the tower height of wind turbine generator sets has also been rising. This has led to an increasing demand for the bearing capacity and anti-overturning ability of wind turbine foundations. To meet the above requirements, wind turbine foundations will become larger and larger, the floor area and the amount of concrete used will continue to increase, and the foundation cost will also increase sharply.

[0003] Secondly, with the operation of wind turbine generator sets, the differential settlement phenomenon of wind turbine foundations has gradually emerged. Wind turbine generator sets are tall buildings and are extremely sensitive to inclination. A slight inclination of the foundation will cause a large horizontal deviation in the wind turbine generator set. Under the action of gravity such as in the nacelle, impeller, and tower, it is extremely easy to cause failures. Therefore, how to improve the anti-overturning ability of wind turbine foundations has always been the focus of attention of those skilled in the art. Summary of the Invention

[0004] In view of the above problems, this application provides a wind turbine foundation and a wind turbine generator set. This wind turbine foundation has a strong anti-overturning ability and high safety.

[0005] In a first aspect, this application provides a wind turbine foundation. The wind turbine foundation includes a base body and an anchoring mechanism. The base body is supported on the ground and at least partially buried in the ground; the anchoring mechanism includes an anchoring unit and a first anchor bolt. The anchoring unit is connected between the ground and the base body. The anchoring unit includes a main beam and a bearing column. The main beam is connected to the base body, and at least part of the main beam extends into the backfill material of the ground. The bearing column is connected to the main beam and extends into the ground. The two ends of the first anchor bolt are respectively connected to the bearing column and the base body.

[0006] In the above structure, when the wind turbine foundation has an overturning tendency, the main beam on the side extending into the backfill material will have an upward lifting tendency. Since at least part of the main beam in the anchoring unit extends into the backfill material of the ground, the weight of the backfill material will resist the upward lifting of this side of the main beam, thereby preventing the overturning of the wind turbine foundation, making the wind turbine foundation have a strong anti-overturning ability and being beneficial to improving the safety of the wind turbine foundation.

[0007] According to the wind turbine foundation provided by some embodiments of this application, the wind turbine foundation further includes a plurality of connecting structures. There are a plurality of anchoring mechanisms, and the plurality of anchoring mechanisms are arranged at intervals along the circumference of the base body. The main beams of adjacent two anchoring units are connected by the connecting structures, and the plurality of connecting structures are wound around the outer periphery of the base body.

[0008] According to the wind turbine foundation provided by some embodiments of the present application, the main beam is connected to the bottom surface of the base body, the bearing column is connected to the side of the main beam away from the base body, and the first anchor bolt passes through the bearing column, the main beam and the base body.

[0009] According to the wind turbine foundation provided by some embodiments of the present application, the wind turbine foundation further includes a load structure, the load structure is connected to the connection structure and the main beam, and the load structure extends along a plane perpendicular to the axial direction of the base body and extends into the backfill material of the foundation.

[0010] According to the wind turbine foundation provided by some embodiments of the present application, the load structure includes a load mesh, and part of the load mesh is clamped between the base body and the main beam.

[0011] According to the wind turbine foundation provided by some embodiments of the present application, the wind turbine foundation further includes a bearing structure and a second anchor bolt, the bearing structure and the connection structure are arranged at intervals along the axial direction of the base body and are connected to the base body, and the two ends of the second anchor bolt are respectively connected to the bearing structure and the connection structure.

[0012] According to the wind turbine foundation provided by some embodiments of the present application, the bearing structure abuts against the surface of the base body, and at least part of the base body is clamped between the bearing structure and the main beam.

[0013] According to the wind turbine foundation provided by some embodiments of the present application, the bearing structure passes through the base body and at least part of the bearing structure extends out of the base body, and the part of the bearing structure extending out of the base body is connected to the connection structure through the second anchor bolt.

[0014] According to the wind turbine foundation provided by some embodiments of the present application, the second anchor bolts are arranged at intervals between adjacent two anchoring units.

[0015] According to the wind turbine foundation provided by some embodiments of the present application, the anchoring mechanism further includes an anchoring foundation, and the anchoring foundation is connected to the main beam and extends into the foundation.

[0016] According to the wind turbine foundation provided by some embodiments of the present application, the anchoring foundation includes a connecting body and a third anchor bolt arranged in the connecting body, one end of the third anchor bolt is connected to the main beam and the other end is connected to the connecting body.

[0017] According to the wind turbine foundation provided by some embodiments of the present application, the anchoring unit further includes a strengthening beam, and the two ends of the strengthening beam are respectively connected to the main beam and the bearing column.

[0018] According to the wind turbine foundation provided by some embodiments of the present application, the bearing column is configured as a tapered column, the large diameter end of the bearing column is connected to the main beam, and the small diameter section of the bearing column is inserted into the foundation.

[0019] In a second aspect, some embodiments of the present application provide a wind turbine generator, which includes a tower, an impeller, and the wind turbine foundation provided in any of the above technical solutions. The tower is disposed on the wind turbine foundation and connected to the base body, and the impeller is disposed on the tower.

[0020] The technical solutions provided by the embodiments of the present disclosure at least bring the following beneficial effects:

[0021] The present application provides a wind turbine foundation, which includes a base body and an anchoring mechanism. The base body is supported on the ground foundation and at least partially buried in the ground foundation. The anchoring mechanism includes an anchoring unit and a first anchor bolt. The anchoring unit is connected between the ground foundation and the base body. The anchoring unit includes a main beam and a bearing column. The main beam is connected to the base body, and at least part of the main beam extends into the backfill material of the ground foundation. The bearing column is connected to the main beam and extends into the ground foundation. Two ends of the first anchor bolt are respectively connected to the bearing column and the base body. In the above structure, when the wind turbine foundation has a tendency to overturn, one side main beam extending into the backfill material will have an upward lifting tendency. Since at least part of the main beam in the anchoring unit extends into the backfill material of the ground foundation, the weight of the backfill material will resist the upward lifting of this side main beam, thereby blocking the overturning of the wind turbine foundation, so that the wind turbine foundation has strong anti-overturning ability, which is beneficial to improving the safety of the wind turbine foundation.

[0022] The above description is only an overview of the technical solutions of the present application. In order to be able to understand the technical means of the present application more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features and advantages of the present application more obvious and understandable, the following specifically illustrates the specific embodiments of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present application. Moreover, throughout the drawings, the same reference numerals are used to represent the same components.

[0024] Figure 1 is a schematic internal structure diagram of the wind turbine foundation provided by some embodiments of the present application;

[0025] Figure 2 is a top view of the wind turbine foundation provided by some embodiments of the present application;

[0026] Figure 3 is Figure 2 the schematic internal structure diagram at A-A in

[0027] Figure 4 is Figure 3 the enlarged view at C in

[0028] Figure 5Schematic structural diagrams of the load structure and the anchoring mechanism provided by some embodiments of the present application;

[0029] Figure 6 is Figure 2 Internal structural diagram at B - B in

[0030] Figure 7 Schematic structural diagram of the anchoring unit provided by some embodiments of the present application.

[0031] In the drawings:

[0032] 1. Substrate; 2. Anchoring mechanism; 21. Anchoring unit; 211. Main beam; 212. Bearing column; 213. Reinforcing beam; 22. First anchor bolt; 23. Anchoring foundation; 231. Connecting body; 232. Third anchor bolt; 3. Connecting structure; 4. Load structure; 41. Load mesh; 5. Bearing structure; 6. Second anchor bolt; 10. Foundation; 20. Backfill material. Detailed implementation manners

[0033] The embodiments of the technical solutions of the present application will be described in detail below with reference to the drawings. The following embodiments are only used to illustrate the technical solutions of the present application more clearly, so they are only examples and cannot be used to limit the protection scope of the present application.

[0034] It should be noted that unless otherwise specified, the technical terms or scientific terms used in the embodiments of the present application should be the ordinary meanings understood by those skilled in the art to which the embodiments of the present application belong.

[0035] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the embodiments of the present application.

[0036] In addition, the technical terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. In the description of the embodiments of the present application, "a plurality" means more than two unless otherwise specifically defined.

[0037] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installation", "connection", "linkage", "fixation" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral body; it can also be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0038] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature is at a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature is at a lower horizontal height than the second feature.

[0039] In order to enable the wind turbine foundation to have strong anti-overturning ability, the present application provides a wind turbine foundation, which includes a base body and an anchoring mechanism. The base body is supported on the ground and at least partially buried in the ground. The anchoring mechanism includes an anchoring unit and a first anchor bolt. The anchoring unit is connected between the ground and the base body. The anchoring unit includes a main beam and a bearing column. The main beam is connected to the base body, and at least part of the main beam extends into the backfill material of the ground. The bearing column is connected to the main beam and extends into the ground. The two ends of the first anchor bolt are respectively connected to the bearing column and the base body. In the above structure, when the wind turbine foundation has an overturning tendency, on the side of the main beam that produces an upward tendency and extends into the backfill material, since at least part of the main beam in the anchoring unit extends into the backfill material of the ground, the weight of the backfill material will resist the upward movement of the main beam on this side. On the side of the main beam that produces a downward tendency and extends into the backfill material, since the anchoring unit extends into the ground, it is not easy to produce slippage, so that the overturning of the wind turbine foundation can be blocked, making the wind turbine foundation have strong anti-overturning ability and being beneficial to improving the safety of the wind turbine foundation.

[0040] The wind turbine foundation disclosed in the embodiments of the present application can be but is not limited to being applied to the foundation in a wind power generation unit, and can also be used for the hoisting of other cylindrical, columnar and other structures such as buildings, which can enhance the anti-overturning ability of the building and has high safety.

[0041] The technical solutions of the wind turbine foundation and the wind power generation unit provided by the specific embodiments of the present application will be further described below.

[0042] As Figure 1As shown, some embodiments of the present application provide a matrix 1 and an anchoring mechanism 2. The matrix 1 is supported on the foundation 10 and at least partially buried in the foundation 10. The anchoring mechanism 2 includes an anchoring unit 21 and a first anchor bolt 22. The anchoring unit 21 is connected between the foundation 10 and the matrix 1. The anchoring unit 21 includes a main beam 211 and a bearing column 212. The main beam 211 is connected to the matrix 1, and at least part of the main beam 211 extends into the backfill material 20 of the foundation 10. The bearing column 212 is connected to the main beam 211 and extends into the foundation 10. The two ends of the first anchor bolt 22 are respectively connected to the bearing column 212 and the matrix 1.

[0043] The matrix 1 may refer to the main structure of the wind turbine foundation, which is supported on the foundation 10, used for direct connection with the tower, capable of bearing the load of the tower of the wind power generation unit and the part above the tower, and providing an anti-overturning moment for the tower. The matrix 1 can be formed by pouring concrete in a foundation pit and curing it, or can be prefabricated in a factory and formed by pouring concrete into a mold and curing it. In some embodiments, the matrix 1 can be arranged in a foundation pit, and at least part of the matrix 1 is buried in the foundation 10 by filling the backfill material 20 into the foundation pit where the matrix 1 is arranged.

[0044] The anchoring mechanism 2 may be a mechanism formed by wrapping anchor bolts, steel bars and other components in concrete to enhance the connection strength between the concrete and the anchor bolts, steel bars and other components. The mechanism is connected to the matrix 1. Exemplarily, the anchoring mechanism 2 can be connected to the bottom surface of the matrix 1, so that the anchoring mechanism 2 can extend into the foundation 10 to achieve connection with the foundation 10. The anchoring mechanism 2 can not only improve the bearing capacity of the foundation 10, enabling the foundation 10 to better support the matrix 1, but also extend the seepage path of groundwater, reduce the uplift force generated by pore water on the wind turbine foundation, which is beneficial to improving the anti-overturning ability of the wind turbine foundation, and also enables the anchoring mechanism 2 to have a cut-off wall effect. When the wind turbine foundation slips, the anchoring mechanism 2 will generate a resistance force to resist sliding and prevent the wind turbine foundation from slipping.

[0045] The anchoring unit 21 may be a unit body in the anchoring mechanism 2 that is connected to the matrix 1, and it can be formed by wrapping anchor bolts, steel bars and other components in concrete.

[0046] The main beam 211 may be a component in the anchoring unit 21 that is connected to the matrix 1, and it can be arranged to extend radially along the matrix 1, so that at least part of the main beam 211 can conveniently extend out of the matrix 1 and then extend into the backfill material 20 of the foundation 10. The main beam 211 is connected to the matrix 1, extends out of the matrix 1 and extends into the backfill material 20 of the foundation 10, so that the main beam 211 can be more evenly stressed. By extending at least part of the main beam 211 radially into the backfill material 20 of the foundation 10, the weight of the backfill material 20 can better act on the main beam 211, which is beneficial to improving the anti-overturning ability brought by the anchoring mechanism 2.

[0047] Exemplarily, the backfill material 20 may refer to the material backfilled into the foundation pit. The backfill material 20 may be backfill soil, such as cohesive soil, gravelly soil, sandy soil, and blasted slag; the backfill material 20 may also be materials such as waste residue and concrete to improve the stability and bearing capacity of the foundation 10.

[0048] The bearing column 212 may be a columnar member connected to the main beam 211. Exemplarily, the bearing column 212 extends along the axial direction of the base body 1 and extends into the foundation 10, so that the bearing column 212 can better transfer the supporting force of the foundation 10 to the base body 1.

[0049] The first anchor bolt 22 may be an anchor bolt mechanism for connecting the anchoring unit 21 to the base body 1. By connecting the two ends of the first anchor bolt 22 to the bearing column 212 and the base body 1 respectively, the first anchor bolt 22 can tension the bearing column 212 and the base body 1, and use the pre-tightening force to improve the connection firmness between the anchoring unit 21 and the base body 1, so that the anchoring unit 21 and the base body 1 are connected into an integral structure.

[0050] In the above structure, when the wind turbine foundation has an overturning tendency, on the side of the main beam 211 that extends into the backfill material 20 and generates an upward lift tendency, since at least a part of the main beam 211 in the anchoring unit 21 extends into the backfill material 20 of the foundation 10, the weight of the backfill material 20 will resist the upward lift of the main beam 211 on this side. On the side of the main beam 211 that extends into the backfill material 20 and generates a downward pressure tendency, since the anchoring unit 21 extends into the foundation 10, it is not easy to generate slippage, so that the overturning of the wind turbine foundation can be blocked, making the wind turbine foundation have strong anti-overturning ability, which is beneficial to improving the safety of the wind turbine foundation. In addition, since the wind turbine foundation makes full use of the surrounding backfill material 20, the wind turbine foundation can reduce its volume on the basis of maintaining the anti-overturning ability, which is beneficial to reducing the land acquisition area and the amount of concrete used, and helps to reduce costs. Through the above design scheme, the wind turbine foundation provided by the present application does not require too large a size, as long as it can meet the bearing capacity requirements of the foundation 10 and has the ability of anti-cracking, anti-shearing, and anti-impact.

[0051] In some embodiments, as Figure 2 shown, the wind turbine foundation further includes a plurality of connecting structures 3. There are a plurality of anchoring mechanisms 2, and the plurality of anchoring mechanisms 2 are arranged at intervals along the circumferential direction of the base body 1. The main beams 211 of adjacent two anchoring units 21 are connected by the connecting structures 3, and the plurality of connecting structures 3 are wound around the outer periphery of the base body 1.

[0052] By providing a plurality of anchoring mechanisms 2, and arranging the plurality of anchoring mechanisms 2 at intervals along the circumference of the base 1, the anchoring mechanisms 2 can better exert an anti-overturning force on the base 1. Exemplarily, the plurality of anchoring mechanisms 2 can be arranged at equal intervals along the circumference of the base 1, and the effects of the plurality of anchoring mechanisms 2 on the base 1 are evenly distributed along the circumference of the base 1, which can not only reduce uneven settlement in the later stage, but also improve the adaptability under different geological conditions, and also enable the base 1 to be evenly subjected to the anti-overturning force in all directions along the circumference, which is beneficial to improving the stability of the wind turbine foundation.

[0053] The connection structure 3 may be a structure for connecting two adjacent anchoring units 21. By using a plurality of connection structures 3 to connect every two adjacent anchoring units 21, the plurality of connection structures 3 can connect the plurality of anchoring mechanisms 2 to form a whole, which is beneficial to improving the overall structural strength of the wind turbine foundation. The plurality of connection structures 3 are arranged around the periphery of the base 1, so that the connection structures 3 can also bear the gravity of the backfill material 20, which is beneficial to improving the anti-overturning ability of the wind turbine foundation.

[0054] Exemplarily, the two ends of the connection structure 3 are respectively connected to the ends of the main beams 211 of two adjacent anchoring units 21 extending out of the base 1, which not only enables the force from the backfill material 20 on the connection structure 3 to provide a greater anti-overturning torque, but also balances the force on the connection structure 3. In some embodiments, the connection structure 3 can be configured as a beam-like structure, with its two ends respectively connected to the ends of the main beams 211 of two adjacent anchoring units 21 extending out of the base 1.

[0055] Exemplarily, eight anchoring mechanisms 2 are arranged at equal intervals along the circumference of the base 1 , eight connecting structures 3 may be provided, and the connecting structure 3 is arranged between two adjacent anchoring mechanisms 2 and connected between the main beams 211 of two adjacent anchoring units 21 .

[0056] In some embodiments, Figure 3 and Figure 4 As shown, the main beam 211 is connected to the bottom surface of the base 1, the pressure-bearing column 212 is connected to the side of the main beam 211 away from the base 1, and the first anchor bolt 22 is penetrated through the pressure-bearing column 212, the main beam 211 and the base 1.

[0057] By connecting the main beam 211 to the bottom surface of the base 1, and at least part of the main beam 211 extending into the backfill material 20 of the foundation 10 along the radial direction of the base 1, the weight of the backfill material 20 can better act on the main beam 211, which is conducive to improving the anti-overturning ability brought by the anchoring mechanism 2. By arranging part of the main beam 211 at the bottom of the base 1, and the other part of the main beam 211 extending from the base 1 and extending into the backfill material 20 of the foundation 10, the main beam 211 can be subjected to a relatively balanced force.

[0058] Along the axial direction of the base body 1, the pressure-bearing column 212 is connected to the side surface of the main beam 211 away from the base body 1, so that the pressure-bearing column 212 can extend into the foundation 10, and the foundation 10 can better support the base body 1.

[0059] By passing the first anchor bolt 22 through the pressure-bearing column 212, the main beam 211 and the base body 1, and connecting the two ends of the first anchor bolt 22 to the pressure-bearing column 212 and the base body 1 respectively, the first anchor bolt 22 can firmly connect the pressure-bearing column 212, the main beam 211 and the base body 1 under the action of the pre-tightening force.

[0060] Exemplarily, when pouring the anchoring unit 21 and the base body 1, the duct for the first anchor bolt 22 needs to be reserved in advance. After the pouring of the anchoring unit 21 and the base body 1 is completely finished, the first anchor bolt 22 arranged in the duct is tensioned to generate a pre-tightening force, so that the anchoring unit 21 and the base body 1 can be fully stressed to form an overall stressed structure.

[0061] In some embodiments, as Figure 5 shown, the wind turbine foundation further includes a load structure 4. The load structure 4 is connected to the connection structure 3 and the main beam 211, and the load structure 4 extends along a plane perpendicular to the axial direction of the base body 1 and extends into the backfill material 20 of the foundation 10.

[0062] The load structure 4 can be a structure for better bearing the gravity of the backfill material 20 in the foundation 10. By connecting the load structure 4 to the connection structure 3 and the main beam 211, the acting force of the backfill material 20 received by the load structure 4 can be transmitted to the anchoring unit 21, and then transmitted to the base body 1, and the load structure 4 can better provide an anti-overturning torque for the base body 1.

[0063] By extending the load structure 4 along a plane perpendicular to the axial direction of the base body 1 and making the load structure 4 extend into the backfill material 20 of the foundation 10, the gravity of the backfill material 20 received by the load structure 4 can be converted into a larger anti-overturning torque, which is beneficial to improving the anti-overturning ability of the wind turbine foundation.

[0064] Exemplarily, the load structure 4 can be set as an annular structure wound around the outer periphery of the base body 1, which can better utilize the gravity of the backfill material 20 on the outer periphery of the base body 1.

[0065] In some embodiments, as Figure 4 shown, the load structure 4 includes a load mesh 41, and part of the load mesh 41 is clamped between the base body 1 and the main beam 211.

[0066] The load mesh 41 can be a mesh structure capable of bearing the gravitational force of the backfill material 20, and can be configured as an annular structure wound around the outer periphery of the base body 1. Since the mesh structure has a plurality of uniformly arranged mesh holes, the load structure 4 can reduce the use of materials while bearing the gravitational force of the backfill material 20, which is beneficial to reducing material waste. In some embodiments, the load structure 4 may further include a perforated plate. Since a plurality of through holes are uniformly arranged on the perforated plate, the water seeping in from the ground can seep into the ground through the through holes, which is beneficial to reducing the accumulation of water in the foundation pit.

[0067] Exemplarily, the load mesh 41 can include a steel bar mesh, which can be formed by connecting a plurality of steel bars by welding or binding, so that the load mesh 41 has good load-bearing capacity. In some embodiments, the steel bar mesh in the load mesh 41 can be provided with one layer or multiple layers, and those skilled in the art can set the number of layers of the steel bar mesh according to the actual situation.

[0068] Part of the load mesh 41 is clamped between the base body 1 and the main beam 211. It can be that the part of the load mesh 41 near the inner peripheral edge is located between the base body 1 and the main beam 211, and under the action of the pre-tightening force of the first anchor bolt 22, the part of the load mesh 41 located between the base body 1 and the main beam 211 is clamped, so that the load structure 4 and the anchoring unit 21 can form an integral stress structure. The part of the load mesh 41 near the outer peripheral edge extends into the backfill material 20, and the load mesh 41 extending into the backfill material 20 can bear the gravitational force of the backfill material 20.

[0069] In some embodiments, as Figure 6 shown, the wind turbine foundation further includes a load-bearing structure 5 and a second anchor bolt 6. The load-bearing structure 5 and the connecting structure 3 are arranged at intervals along the axial direction of the base body 1 and are connected to the base body 1. The two ends of the second anchor bolt 6 are respectively connected to the load-bearing structure 5 and the connecting structure 3.

[0070] The load-bearing structure 5 can be a structure for bearing the acting force of the connecting structure 3 and transmitting the acting force to the base body 1. The acting forces of the load structure 4 and the connecting structure 3 from the gravity of the filling material can be transmitted to the load-bearing structure 5 through the second anchor bolt 6 to act on the base body 1.

[0071] The load-bearing structure 5 and the connecting structure 3 are arranged at intervals along the axial direction of the base body 1 and are connected to the base body 1. It can be that the load-bearing structure 5 is arranged above the connecting structure 3 and is connected to the base body 1. By arranging the load-bearing structure 5 and the connecting structure 3 at intervals along the axial direction of the base body 1, the load-bearing structure 5 can convert the acting force into the pressure above the acting force base body 1, which can effectively improve the anti-overturning ability of the wind turbine foundation.

[0072] The second anchor bolt 6 passes through the connection structure 3, the backfill material 20, and the bearing structure 5 in sequence along the axial direction of the base body 1, and is respectively connected to the bearing structure 5 and the connection structure 3 at both ends, so that the pre-tightening force of the second anchor bolt 6 can connect the connection structure 3 and the bearing structure 5 into a whole, which can improve the stress of the connection structure 3 and the anchoring unit 21, and improve the utilization ability of the backfill material 20 on the outer periphery of the base body 1.

[0073] Exemplarily, the bearing structure 5 can be a beam-like structure, which can bear a large load and act on the base body 1. In some embodiments, the bearing structure 5 can adopt an I-shaped steel beam. The cross-sectional shape of the I-shaped steel beam is I-shaped, and the I-shaped steel beams can form a bearing structure 5 with a lattice-like stress structure to bear a large load.

[0074] In some embodiments, the bearing structure 5 abuts against the surface of the base body 1, and at least part of the base body 1 is clamped between the bearing structure 5 and the main beam 211.

[0075] By making the bearing structure 5 abut against the surface of the base body 1, at least part of the base body 1 can be clamped between the bearing structure 5 and the main beam 211, so that the bearing structure 5 can directly exert a force on the base body 1 from the outer surface of the base body 1, and the gravity of the backfill material 20 can be converted into a pressure applied to the outer surface of the base body 1, which is beneficial to significantly improving the anti-overturning ability of the fan foundation.

[0076] Exemplarily, a bearing platform can be provided on the surface of the base body 1. The surface of the bearing platform is configured as a plane, and the bearing structure 5 abuts against the surface of the bearing platform, which can reduce the possibility of the bearing structure 5 slipping on the surface of the base body 1.

[0077] In some embodiments, the bearing structure 5 penetrates through the base body 1 and at least part of the bearing structure 5 extends out of the base body 1. The part of the bearing structure 5 extending out of the base body 1 is connected to the connection structure 3 through the second anchor bolt 6.

[0078] The bearing structure 5 penetrates through the base body 1, which can be that the bearing structure 5 is cast in the base body 1, so that the connection between the bearing structure 5 and the base body 1 is firm. At least part of the bearing structure 5 extends out of the base body 1, and the extended bearing structure 5 extends to the outer periphery of the base body 1, so that the bearing structure 5 can be connected to the connection structure 3 through the second anchor bolt 6.

[0079] In some embodiments, the second anchor bolts 6 are arranged at intervals between two adjacent anchoring units 21.

[0080] By arranging the second anchor bolts 6 at intervals between two adjacent anchoring units 21, the connection positions of the second anchor bolts 6 and the connecting structure 3 are located between two adjacent anchoring units 21, which can improve the force-bearing of the connecting structure 3 and enhance the structural strength of the connecting structure 3. Exemplarily, the second anchor bolts 6 are connected to the central position of the connecting structure 3.

[0081] In some embodiments, the anchoring mechanism 2 further includes an anchoring foundation 23, and the anchoring foundation 23 is connected to the main beam 211 and extends into the foundation 10.

[0082] The anchoring foundation 23 can be a structure for enhancing the connection firmness between the anchoring unit 21 and the foundation 10. It is connected to the main beam 211 of the anchoring unit 21 and extends into the foundation 10, which can provide uplift resistance for the anchoring unit 21 and thus provide a force for the substrate 1 to resist uplift.

[0083] In some embodiments, the anchoring foundation 23 includes a connecting body 231 and a third anchor bolt 232 disposed in the connecting body 231. One end of the third anchor bolt 232 is connected to the main beam 211 and the other end is connected to the connecting body 231.

[0084] The connecting body 231 can be a grouting body, which can be formed by curing the concrete poured into the holes of the third anchor bolts 232 in the foundation 10. It wraps around the outer periphery of the third anchor bolts 232, making the anchoring foundation 23 a concrete structure with good durability and force-bearing environment. At the same time, the connecting body 231 is connected to the surface of the main beam 211 and the foundation 10, which is beneficial to enhancing the integrity between the main beam 211 and the foundation 10. One end of the third anchor bolt 232 is connected to the main beam 211, and the other end is connected to the inside of the connecting body 231 through an enlarged head, improving the connection strength between the third anchor bolt 232 and the connecting body 231.

[0085] In some embodiments, as Figure 7 shown, the anchoring unit 21 further includes a strengthening beam 213, and both ends of the strengthening beam 213 are respectively connected to the main beam 211 and the bearing column 212.

[0086] The strengthening beam 213 can be a beam-like structure for enhancing the structural strength of the anchoring unit 21. By connecting both ends of the strengthening beam 213 to the main beam 211 and the bearing column 212 respectively, it is beneficial to improve the structural strength of the anchoring unit 21, enabling the anchoring unit 21 to better provide a supporting force for the substrate 1.

[0087] In some embodiments, the bearing column 212 is configured as a tapered column. The large-diameter end of the bearing column 212 is connected to the main beam 211, and the small-diameter section of the bearing column 212 is inserted into the foundation 10.

[0088] By configuring the pressure-bearing column 212 as a conical column, the pressure-bearing column 212 has a large-diameter end and a small-diameter end with different diameters. By connecting the large-diameter end of the pressure-bearing column 212 to the main beam 211 and inserting the small-diameter section of the pressure-bearing column 212 into the foundation 10, the force exerted by the pressure-bearing column 212 on the main beam 211 is more dispersed, and thus the force exerted by the main beam 211 on the base 1 is more dispersed, which can reduce the possibility of damage to the base 1.

[0089] The wind turbine foundation provided by the above technical solution has good adaptability and can be applied to steel tower foundations, concrete tower foundations, and foundations of other structural forms. Moreover, foundations of these structural forms can also apply the wind turbine foundation provided by this application under different geological conditions.

[0090] Some embodiments of this application also provide a wind power generation set, which includes a tower, an impeller, and the wind turbine foundation provided by the above technical solution. The tower is arranged on the wind turbine foundation and connected to the base 1, and the impeller is arranged on the tower.

[0091] In the above technical solution, when the wind power generation set is operating normally, the multiple anchoring mechanisms 2 connected to the base 1 can improve the bearing capacity of the wind turbine foundation, which is beneficial to reducing the uneven settlement of the wind turbine foundation and can improve the adaptability of the wind turbine foundation under different geological conditions. When the tower of the wind power generation set bears a large bending moment and the wind turbine foundation is about to overturn, on the side with an upward trend, the main beam 211 of the load structure 4, the connection structure 3, and the anchoring mechanism 2 will be affected by the gravity of the backfill material 20 outside the base 1. A part of the force acts on the base 1 through the first anchor bolt 22, generating a force to resist the upward movement on this side of the base 1. Another part of the force acts on the bearing structure 5 through the second anchor bolt 6, and the bearing structure 5 generates a downward pressure on the base 1, exerting a force to resist the upward movement on this side. In addition, the anchoring foundation 23 of the anchoring mechanism 2 extending into the foundation 10 can also provide an uplift resistance force, further generating a force to resist the upward movement on this side. At the same time, the bearing structure 5 can directly exert a downward force on the outer surface of the base 1, also generating a force to resist the upward movement on the side with an upward trend, realizing the blocking of the overturning of the wind turbine foundation, making the wind turbine foundation have strong anti-overturning ability, which is beneficial to improving the safety of the wind power generation set. On the side with a downward trend, the anchoring unit 21 can disperse the force received by the base 1, reducing the damage to the base 1 caused by excessive local pressure.

[0092] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than limiting them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the various embodiments of the present application, and they should all be covered within the scope of the claims and the description of the present application. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A wind turbine foundation, characterized in that, it includes a matrix, supported on the foundation and at least partially buried in the foundation; an anchoring mechanism, including an anchoring unit and a first anchor bolt. The anchoring unit is connected between the foundation and the matrix. The anchoring unit includes a main beam and a bearing column. The main beam is connected to the matrix, and at least part of the main beam extends into the backfill material of the foundation. The bearing column is connected to the main beam and extends into the foundation. The two ends of the first anchor bolt are respectively connected to the bearing column and the matrix.

2. The wind turbine foundation according to claim 1, characterized in that, the wind turbine foundation further includes a plurality of connecting structures. There are a plurality of the anchoring mechanisms, and the plurality of anchoring mechanisms are arranged at intervals along the circumference of the matrix. The main beams of two adjacent anchoring units are connected by the connecting structures, and the plurality of connecting structures are wound around the outer periphery of the matrix.

3. The wind turbine foundation according to claim 1, characterized in that, the main beam is connected to the bottom surface of the matrix, the bearing column is connected to the side of the main beam away from the matrix, and the first anchor bolt passes through the bearing column, the main beam and the matrix.

4. The wind turbine foundation according to claim 2, characterized in that, the wind turbine foundation further includes a load structure. The load structure is connected to the connecting structure and the main beam. The load structure extends along a plane perpendicular to the axial direction of the matrix and extends into the backfill material of the foundation.

5. The wind turbine foundation according to claim 4, characterized in that, the load structure includes a load mesh, and part of the load mesh is clamped between the matrix and the main beam.

6. The wind turbine foundation according to claim 2, characterized in that, the wind turbine foundation further includes a bearing structure and a second anchor bolt. The bearing structure and the connecting structure are arranged at intervals along the axial direction of the matrix and are connected to the matrix. The two ends of the second anchor bolt are respectively connected to the bearing structure and the connecting structure.

7. The wind turbine foundation according to claim 6, characterized in that, the bearing structure abuts against the surface of the matrix, and at least part of the matrix is clamped between the bearing structure and the main beam.

8. The wind turbine foundation according to claim 6, characterized in that, the bearing structure passes through the matrix and at least part of the bearing structure extends out of the matrix. The part of the bearing structure extending out of the matrix is connected to the connecting structure through the second anchor bolt.

9. The wind turbine foundation according to claim 6, characterized in that, the second anchor bolts are arranged at intervals between two adjacent anchoring units.

10. The wind turbine foundation according to claim 1, characterized in that, the anchoring mechanism further includes an anchoring foundation, and the anchoring foundation is connected to the main beam and extends into the foundation.

11. The wind turbine foundation according to claim 10, characterized in that, the anchoring foundation includes a connecting body and a third anchor bolt arranged in the connecting body. One end of the third anchor bolt is connected to the main beam and the other end is connected to the connecting body.

12. The wind turbine foundation according to claim 1, characterized in that, The anchoring unit further includes a strengthening beam, and two ends of the strengthening beam are respectively connected to the main beam and the bearing column.

13. The wind turbine foundation according to claim 1, wherein, the bearing column is configured as a tapered column, a large-diameter end of the bearing column is connected to the main beam, and a small-diameter section of the bearing column is inserted into the foundation.

14. A wind power generating set, wherein, it includes: a wind turbine foundation as described in any one of claims 1-13; a tower, arranged on the wind turbine foundation and connected to the base; an impeller, arranged on the tower.

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