Steel-concrete combined fan foundation structure
Patent Information
- Application Number
- CN202522211229.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-20
- Publication Date
- 2026-09-25
- Estimated Expiration
- 2035-10-20
AI Technical Summary
[0003]本申请的目的是提供一种钢混组合的风机基础结构，以解决现有的问题
[0014]本申请通过上述技术方案，与同样直径的扩展式风机基础结构相比，混凝土用量减少，钢筋材用量减少，结构刚度大，容易加工，易于运输，并且实现了风机基础结构的加高处理，提升露出地面的高度，实现在不增加塔架用量的条件下抬高风机轮毂高度，增加发电量。
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Figure CN224799551U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of wind turbine tower technology, specifically relating to a steel-concrete composite wind turbine foundation structure. Background Technology
[0002] With the technological advancements in the wind power industry, the installed capacity of individual wind turbines is increasing, along with the load on the turbines, in order to improve power generation efficiency. When the turbine hub height is within 120m, a pure steel tower structure offers good economic advantages. However, increasing the height of the steel tower drastically increases steel consumption, thereby raising the overall cost. Therefore, how to increase the height of steel towers at a lower cost has become a pressing technical problem that needs to be solved. Utility Model Content
[0003] The purpose of this application is to provide a steel-concrete composite wind turbine foundation structure to solve existing problems.
[0004] To achieve the above objectives, this application adopts the following technical solution: A steel-concrete composite wind turbine foundation structure, comprising: A concrete base slab, located at the bottom of the wind turbine foundation structure, is configured as a supporting base connecting the wind turbine foundation structure and the ground; A ring beam structure is disposed on top of the wind turbine foundation structure and is configured to connect the wind turbine foundation structure and the tower. A supporting structure is disposed between the concrete base slab and the ring beam structure, and is configured to support the ring beam structure; The ring beam structure includes at least a ring beam groove, with an opening at the top and a short limb circular tube for connecting the support structure below, the short limb circular tube being in communication with the ring beam groove; The supporting structure includes at least a steel-concrete composite column and a steel-concrete composite cylinder. One end of the steel-concrete composite column is connected to the short-limb circular pipe so that the poured concrete can flow from the ring beam groove through the short-limb circular pipe into the interior of the steel-concrete composite column. The other end of the steel-concrete composite column is connected to the concrete base plate. One end of the steel-concrete composite cylinder is connected to the bottom of the ring beam groove, and the other end is connected to the concrete base plate.
[0005] This application may further include the following technical solutions: multiple short-limb circular tubes are evenly distributed along the circumference of the ring beam groove; one or two steel-concrete composite columns are connected to each short-limb circular tube; or, a steel-concrete composite column with a cross structure is connected to every two short-limb circular tubes.
[0006] This application may further include the following technical solution: the number of short-limbed circular tubes is an even number greater than 2.
[0007] Furthermore, this application may include the following technical solution: when one end of the two steel-concrete composite columns is connected to the same short-limb circular tube, the other end of the two steel-concrete composite columns is respectively connected to the steel-concrete composite columns on the adjacent sides of the short-limb circular tube, and fixedly connected to the concrete base plate to form multiple connected V-shaped support structures.
[0008] This application may further include the following technical solution: the longitudinal cross-section of the ring beam groove is a pentagonal structure containing two right angles, the right angle sides of the pentagonal structure are the top surface and inner side surface, the inner side surface and the bottom surface of the ring beam groove, respectively, the outer side surface of the pentagonal structure includes an upper outer side surface and a lower outer side surface, and the short limb circular tube is disposed on the lower outer side surface.
[0009] This application may further include the following technical solution: the projected shape of the ring beam groove is at least one of a circular ring or a regular polygon.
[0010] This application may further include the following technical solution: the inner wall of the ring beam groove is provided with a vertically penetrating positioning hole, which is configured to be fixedly connected to the flange at the bottom of the tower by means of bolts passing through the positioning hole.
[0011] This application may further include the following technical solution: the steel pipe sandwich concrete cylinder includes two layers of steel pipes, the two layers of steel pipes are coaxially sleeved, and the space between the two layers of steel pipes is filled with concrete.
[0012] This application may further include the following technical solution: a precast column is provided on the concrete base plate, the precast column is configured to fix the steel pipe concrete column, the precast column includes a support part facing the short limb circular pipe and a fixing part embedded in the concrete base plate, the support part and the fixing part are fixedly connected, and the included angle is 45°~60°.
[0013] This application may further include the following technical solutions: the concrete base slab, the steel pipe sandwiched concrete cylinder, and the ring beam groove are all provided with steel mesh; and / or, the steel pipe concrete column is provided with prestressed steel strands, and the tensioning end of the prestressed steel strands is located at the top of the ring beam groove. Beneficial effects
[0014] Compared with an extended wind turbine foundation structure of the same diameter, this application achieves a reduction in concrete and steel reinforcement usage through the above-mentioned technical solution, resulting in greater structural rigidity, easier processing, and easier transportation. Furthermore, it enables the raising of the wind turbine foundation structure, increasing the height exposed above ground, and raising the height of the wind turbine hub without increasing the tower usage, thereby increasing power generation. Attached Figure Description
[0015] Figure 1 This is a three-dimensional structural diagram of a steel-concrete composite wind turbine foundation structure according to this application; Figure 2 This is a top view schematic diagram of a steel-concrete composite wind turbine foundation structure according to this application; Figure 3 This is a cross-sectional structural schematic diagram of a steel-concrete composite wind turbine foundation structure according to this application; Figure 4 This is a three-dimensional structural diagram of another steel-concrete composite wind turbine foundation structure according to this application; Figure 5 This is a top view schematic diagram of another steel-concrete composite wind turbine foundation structure according to this application; Figure 6 This is a cross-sectional structural schematic diagram of another steel-concrete composite wind turbine foundation structure according to this application; Figure 7 This is a three-dimensional structural diagram of another steel-concrete composite wind turbine foundation structure according to this application; Figure 8 This is a top view schematic diagram of another steel-concrete composite wind turbine foundation structure according to this application; Figure 9 This is a cross-sectional structural diagram of another steel-concrete composite wind turbine foundation structure according to this application.
[0016] The attached figures are labeled as follows: 100, concrete base slab; 110, precast column; 200, ring beam structure; 210, ring beam groove; 220, short-limbed round pipe; 300, supporting structure; 310, steel-concrete composite column; 320, steel-concrete composite cylinder; 330, positioning hole. Detailed Implementation
[0017] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be further described in detail below with reference to specific examples and accompanying drawings. Exemplary embodiments will be described in detail here, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.
[0018] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.
[0019] A steel-concrete composite wind turbine foundation structure, referring to Figure 1-9 As shown, the wind turbine foundation structure includes: A concrete base slab 100 is set at the bottom of the wind turbine foundation structure and is configured as a support base connecting the wind turbine foundation structure and the ground. The ring beam structure 200 is located on top of the wind turbine foundation structure and is configured to connect the wind turbine foundation structure and the tower. The support structure 300 is located between the concrete base slab 100 and the ring beam structure 200, and is configured to support the ring beam structure 200. The ring beam structure 200 includes at least a ring beam groove 210 with an opening at the top to allow concrete to be poured in, ensuring even distribution within the groove and creating a natural horizontal surface at the opening. This allows the ring beam groove 210 and the solidified concrete to combine and form a stable and robust ring beam, enhancing support stability. A short-limbed circular pipe 220 is provided below to connect to the support structure 300, communicating with the ring beam groove 210. Generally, the ring beam groove 210 is a prefabricated structure, for example, pre-assembled and welded from steel plates in a factory before being transported to the installation site. Alternatively, it can be welded on-site, for example, by positioning two rings of irregularly shaped steel plates using tooling and tie rods before welding, ensuring structural stability and preventing deformation during the welding process.
[0020] The supporting structure 300 includes at least a steel-concrete composite column 310 and a steel-concrete composite cylinder 320. The steel-concrete composite cylinder 320 is located in the middle, and the steel-concrete composite cylinder 320, the ring beam structure 200, and the concrete base are all located on the same central axis. One end of the steel-concrete composite column 310 is connected to a short-limbed circular pipe 220 through a flange, so that the poured concrete can flow from the ring beam groove 210 through the short-limbed circular pipe 220 into the interior of the steel-concrete composite column 310. The other end of the steel-concrete composite column 310 is connected to the concrete base plate 100. One end of the steel-concrete composite cylinder 320 is connected to the bottom of the ring beam groove 210 through a flange, and the other end is connected to the concrete base plate 100 through a flange. Optionally, the concrete base slab 100 is provided with vertical columns for connecting the steel pipe sandwich concrete cylinder 320. The vertical columns can be prefabricated as a whole into a circle or a regular polygon, with the same planar shape as the hollow sandwich concrete cylinder steel pipe sandwich concrete cylinder 320. Alternatively, they can be prefabricated in sections, spliced on site, and connected to each other with butt bolts.
[0021] This application may further include the following technical solution: multiple short-limbed circular pipes 220 are evenly distributed circumferentially along the ring beam groove 210. Each short-limbed circular pipe 220 is connected to one or two steel-concrete composite columns 310, so that the steel-concrete composite columns 310 can be connected to the ring beam groove 210 through the short-limbed circular pipes 220. This allows flowing concrete to flow from the ring beam groove 210 into the short-limbed circular pipes 220, and then into the steel-concrete composite columns 310 connected to the short-limbed circular pipes 220. This achieves simultaneous reinforcement of the steel-concrete composite columns 310 and the ring beam groove 210 in a single pour, and also enhances the connection stability between the steel-concrete composite columns 310 and the ring beam groove 210, improving the overall support strength and stability of the foundation structure. For example, refer to... Figure 1-3 As shown, an example of connecting a steel-concrete composite column 310 to each short-limbed circular tube 220 is illustrated, referencing... Figure 4-9 The example shown is of two steel-concrete composite columns 310 connected to each short-limbed circular tube 220.
[0022] This application may further include the following technical solution: the number of short-limb circular tubes 220 is an even number greater than 2, such as 4, 6, 8, etc., to enhance the support stability by utilizing a symmetrical structure.
[0023] This application may further include the following technical solutions, for reference. Figure 1-3 As shown, when one end of two steel-concrete composite columns 310 is connected to the same short-limb circular pipe 220, the other ends of the two steel-concrete composite columns 310 are respectively connected to the steel-concrete composite columns 310 on the adjacent sides of the short-limb circular pipe 220 and fixedly connected to the concrete base plate 100 to form multiple connected V-shaped support structures 300, further improving the support stability.
[0024] This application may further include the following technical solutions, for reference. Figure 3 , Figure 6 , Figure 9 As shown, the longitudinal cross-section of the ring beam groove 210 is a pentagonal structure containing two right angles. The right angle sides of the pentagonal structure are the top and inner sides, and the inner and bottom sides of the ring beam groove 210, respectively. The outer side of the pentagonal structure includes the upper outer side and the lower outer side. The short-limbed circular tube 220 is set on the lower outer side. The lower outer side is inclined so that the weight of the tower is evenly distributed to the steel pipe concrete column 310 connected to the inclined surface through the inclined surface.
[0025] This application may further include the following technical solution: the projected shape of the ring beam groove 210 is at least one of a circular ring or a regular polygon, such as a quadrilateral, hexagon, octagon, etc.
[0026] This application may further include the following technical solution: the inner wall of the ring beam groove 210 is provided with a vertically penetrating positioning hole 330, which is configured to be fixedly connected to the flange at the bottom of the tower by bolts passing through the positioning hole 330.
[0027] This application may further include the following technical solution: the steel pipe sandwich concrete cylinder 320 includes two layers of steel pipes, which are coaxially connected and filled with concrete between them to enhance the structural strength of the steel pipe sandwich concrete cylinder 320. At the same time, on-site concrete pouring can also reduce the transportation cost of the steel pipe sandwich concrete cylinder 320.
[0028] This application may further include the following technical solution: precast columns 110 are also provided on the concrete base slab 100, and the distribution position and number of the precast columns 110 correspond to the distribution position and number of the short-limb circular tubes 220 on the ring beam groove 210. For example, the distribution position of the precast columns 110 is set at a position that corresponds one-to-one with the distribution position of the short-limb circular tubes 220, or the distribution position of the precast columns 110 is set at a position corresponding to the distribution position of two adjacent short-limb circular tubes 220. (Refer to...) Figure 1-3 As shown, each short-limbed circular tube 220 is connected to a steel-concrete composite column 310. The steel-concrete composite column 310 coincides with the axis of the precast platform column 110 of the lower concrete base slab 100 and the axis of the steel-concrete composite column 310 of the middle support structure 300 along its axial direction. Each steel-concrete composite column 310 connects the concrete base slab 100 and the upper ring beam groove 210 in the form of diagonal bracing. The diagonally braced steel-concrete composite column 310, the ring beam groove 210, and the concrete base slab 100 form a quadrilateral support side frame. (Refer to...) Figure 4-6 As shown, each short-limbed circular tube 220 is connected to two steel-concrete composite columns 310. The steel-concrete composite columns 310 point symmetrically outward at an angle, their respective axes coinciding with the axis of a precast platform column 110 in the lower base plate and with the axis of the steel-concrete composite columns 310 in the middle support structure 300 segment. Each pair of steel-concrete composite columns 310 forms a triangular side support structure 300 with the concrete base plate 100 or the ring beam groove 210. All the steel-concrete composite columns 310 form a spatial structure of a triangular frustum, which is beneficial for converting the complex wind turbine load transmitted from the upper ring beam groove 210 into axial force on the steel-concrete composite columns 310, reducing the bending moment borne by the steel-concrete composite columns 310, and maximizing the load-bearing performance of the material. (Refer to...) Figure 7-9 As shown, each pair of short-limbed circular tubes 220 is connected to a cross-structured steel-concrete composite column 310. The cross-structured steel-concrete composite column 310 can be composed of two steel-concrete composite columns 310 welded together, or it can be a precast cross-structured steel-concrete composite column 310.
[0029] The precast column 110 is configured to fix the steel-concrete composite column 310. The steel-concrete composite column 310 is connected to the precast column 110 via flanges. The precast column 110 includes a support portion facing the short-limb circular tube 220 and a fixing portion embedded in the concrete base 100. The support portion and the fixing portion are fixedly connected at an angle of 45° to 60°, thereby achieving relative fixation between the steel-concrete composite column 310 and the concrete base. For example, the angle between the support portion and the fixing portion is 45° or 60°, the fixing portion is completely submerged in the concrete base, and the support portion is at least partially submerged in the concrete base, improving the stability of the connection between the support structure 300 and the concrete base. Another part of the support portion protrudes from the concrete base to ensure smooth installation and connection with the steel-concrete composite column 310. Since the concrete base needs to be buried underground, exposing the support portion can reduce the possibility of the steel-concrete composite column 310 contacting the ground, thereby reducing the possibility of corrosion of the steel-concrete composite column 310 and extending its service life.
[0030] This application may further include the following technical solution: a steel mesh is provided in the concrete base slab 100, the steel pipe sandwiched concrete cylinder 320, and the ring beam groove 210, so as to improve the structural strength of the concrete through the steel mesh, thereby improving the stability of the wind turbine foundation structure.
[0031] This application may further include the following technical solution: prestressed steel strands are installed inside the steel-concrete composite column 310, and the tensioning end of the prestressed steel strands is located at the top of the ring beam groove 210. Together with the poured concrete, the structural strength and structural stability of the steel-concrete composite column 310 can be improved.
[0032] The terms "upper" and "lower" are used to describe the relative positions of the various structures in the accompanying drawings. They are only for clarity of description and are not intended to limit the scope of implementation of this application. Any changes or adjustments to the relative positions without substantially altering the technical content shall also be considered within the scope of implementation of this application.
[0033] It should be noted that, in this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0034] Furthermore, in this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0035] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0036] The above are merely preferred embodiments of this application and are not intended to limit the application in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the protection scope of this application.
Claims
1. A steel-concrete composite wind turbine foundation structure, characterized in that, include: A concrete base slab, located at the bottom of the wind turbine foundation structure, is configured as a supporting base connecting the wind turbine foundation structure and the ground; A ring beam structure is disposed on top of the wind turbine foundation structure and is configured to connect the wind turbine foundation structure and the tower. A supporting structure is disposed between the concrete base slab and the ring beam structure, and is configured to support the ring beam structure; The ring beam structure includes at least a ring beam groove, with an opening at the top and a short limb circular tube for connecting the support structure below, the short limb circular tube being in communication with the ring beam groove; The supporting structure includes at least a steel-concrete composite column and a steel-concrete composite cylinder. One end of the steel-concrete composite column is connected to the short-limb circular pipe so that the poured concrete can flow from the ring beam groove through the short-limb circular pipe into the interior of the steel-concrete composite column. The other end of the steel-concrete composite column is connected to the concrete base plate. One end of the steel-concrete composite cylinder is connected to the bottom of the ring beam groove, and the other end is connected to the concrete base plate.
2. The steel-concrete composite wind turbine foundation structure according to claim 1, characterized in that, Multiple short-limb circular tubes are evenly distributed along the circumference of the ring beam groove. Each short-limb circular tube is connected to one or two steel-concrete composite columns, or every two short-limb circular tubes are connected to a steel-concrete composite column with a cross structure.
3. The steel-concrete composite wind turbine foundation structure according to claim 2, characterized in that, The number of short-limbed circular tubes is an even number greater than 2.
4. The steel-concrete composite wind turbine foundation structure according to claim 2, characterized in that, When one end of two steel-concrete composite columns is connected to the same short-limb circular tube, the other ends of the two steel-concrete composite columns are respectively connected to the steel-concrete composite columns on the adjacent sides of the short-limb circular tube and fixedly connected to the concrete base plate to form multiple connected V-shaped support structures.
5. The steel-concrete composite wind turbine foundation structure according to claim 1, characterized in that, The longitudinal cross-section of the ring beam groove is a pentagonal structure containing two right angles. The right angle sides of the pentagonal structure are the top and inner sides, and the inner and bottom sides of the ring beam groove, respectively. The outer side of the pentagonal structure includes an upper outer side and a lower outer side, and the short limb circular tube is disposed on the lower outer side.
6. The steel-concrete composite wind turbine foundation structure according to claim 5, characterized in that, The projected shape of the ring beam groove is at least one of a circular ring or a regular polygon.
7. The steel-concrete composite wind turbine foundation structure according to claim 1, characterized in that, The inner wall of the ring beam groove is also provided with a vertically penetrating positioning hole, which is configured to be fixedly connected to the flange at the bottom of the tower by bolts passing through the positioning hole.
8. The steel-concrete composite wind turbine foundation structure according to claim 1, characterized in that, The steel pipe sandwiched concrete cylinder comprises two layers of steel pipes, which are coaxially connected and filled with concrete between them.
9. The steel-concrete composite wind turbine foundation structure according to claim 1, characterized in that, A precast column is also provided on the concrete base plate. The precast column is configured to fix the steel pipe concrete column. The precast column includes a support part facing the short limb circular pipe and a fixing part embedded in the concrete base plate. The support part and the fixing part are fixedly connected and the included angle is 45°~60°.
10. The steel-concrete composite wind turbine foundation structure according to claim 1, characterized in that, The concrete base slab, the steel pipe sandwiched concrete cylinder, and the ring beam groove are all equipped with steel mesh; and / or, the steel pipe concrete column is equipped with prestressed steel strands, the tensioning end of the prestressed steel strands being located at the top of the ring beam groove.