Fan foundation adopting bottom plate sectional reinforcement
By segmenting the base plate of the wind turbine generator and arranging the steel bars according to the bending moment values and internal forces in different areas, the problem of redundant steel bar configuration in the existing technology is solved, the amount of steel bars is reduced and the cost is saved, while ensuring safety. sex.
Patent Information
- Application Number
- CN202421209659.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-30
- Publication Date
- 2025-01-24
- Estimated Expiration
- 2034-05-30
AI Technical Summary
The existing wind turbine foundations have an overall uniform reinforcement, resulting in redundant steel bar configuration, increasing steel bar cost, and it is difficult to take into account both safety and economy.
The method of using the bottom plate segmented tendons is divided into multiple circular segmented areas, and according to the curved moment values and internal force of each area, the perpendicular ring and radial band is configured. The smaller the gluten rate of the edge of the foundation bottom plate.
Through segmented reinforcement, the overall number of steel bars is reduced and costs are saved. At the same time, the safety and economy of the wind turbine foundation are ensured and the waste of steel bars is avoided.
Smart Images
Figure CN222390490U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of wind power plant engineering, and particularly relates to a wind turbine foundation adopting segmented reinforcement of a bottom plate. Background Art
[0002] The existing wind turbine foundation calculates the number of reinforcements by the bending moment of the foundation slab. Usually, the reinforcement is evenly arranged in the radial and circumferential directions within the entire cross-section of the foundation slab. The principle is to take the point with the maximum internal force as the dangerous control section and design the overall reinforcement of the wind turbine foundation, that is, to use the internal force at the edge of the column as the control internal force for radial and circumferential reinforcement. However, the force analysis results show that under the action of the base load, the bending moment value of the foundation slab shows a continuous downward trend from the side close to the column to the edge of the foundation slab. Reinforcement according to this method will cause redundant reinforcement configuration closer to the edge of the foundation slab, which will double the amount of reinforcement and increase the cost of reinforcement. On the other hand, in order to ensure that the bending failure of the wind turbine foundation occurs at the root of the slab, it is generally necessary to limit the slope of the slab slope (the specification stipulates that it should not be less than 1:4). Therefore, if overall reinforcement is adopted and other sections are not empirically calculated, safety and economy cannot be taken into account. Summary of the invention
[0003] In order to overcome the shortcomings of the above-mentioned prior art, the purpose of the utility model is to provide a wind turbine foundation using segmented reinforcement of the bottom plate. By dividing the foundation bottom plate into segments and then separately configuring steel bars for each segment, the reinforcement ratio is smaller closer to the edge of the foundation bottom plate, and the overall number of reinforcements is greatly reduced, thereby saving costs and solving the technical problem of redundant steel bar configuration caused by uniform reinforcement of the foundation bottom plate as a whole in the prior art.
[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:
[0005] A wind turbine foundation using segmented bottom plate reinforcement comprises a wind turbine foundation column 1, a foundation bottom plate 2 is arranged on the periphery of the wind turbine foundation column 1, 2-5 annular segmented areas are evenly arranged on the bottom of the foundation bottom plate 2, the 2-5 annular segmented areas are arranged outwardly with the wind turbine foundation column 1 as the center, the 2-5 annular segmented areas each comprise a plurality of mutually perpendicular annular reinforcements and radial reinforcements, and along the direction of outward arrangement with the wind turbine foundation column 1 as the center, the distance between the annular reinforcements increases successively, while the distance between the radial reinforcements remains fixed.
[0006] The annular segmented area close to the wind turbine foundation column 1 is a main annular segmented area 51, and the remaining annular segmented areas are all secondary annular segmented areas 52. The main annular segmented area 51 includes two layers of mutually perpendicular annular reinforcement and radial reinforcement; the secondary annular segmented area 52 includes a layer of mutually perpendicular annular reinforcement and radial reinforcement.
[0007] The distance between each layer of annular reinforcements in the main annular segmented area 51 is equal.
[0008] The fan foundation column 1 is a concrete casting part, and a plurality of anchor rods 4 fixed to the fan foundation column 1 are arranged inside the fan foundation column 1 , and both ends of the anchor rods 4 are fixed by anchor bolts 3 .
[0009] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0010] The utility model divides the foundation slab into sections, and arranges a number of mutually perpendicular annular reinforcements and radial reinforcements in each section, so that the radial steel bars and annular reinforcements of the foundation slab are closer to the edge of the foundation slab, the smaller the reinforcement ratio is; the closer to the fan foundation column, the higher the bending moment of the foundation floor, and the greater the internal force it bears; by arranging the steel bars in the annular section area close to the fan foundation column into two layers, and the steel bars in the other annular section areas into one layer, not only the refined reinforcement of the fan foundation is achieved, but also the excessive redundancy of the reinforcement at the part of the foundation floor with smaller bending moment is weakened, thereby avoiding the waste of steel bars, reducing the cost, and meeting the safety requirements at the same time. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 A front view of a wind turbine foundation with segmented bottom plate reinforcement provided in an embodiment.
[0012] Figure 2 A half-top view of a wind turbine foundation with segmented bottom plate reinforcement provided in an embodiment. DETAILED DESCRIPTION
[0013] The technical solution of the utility model is further introduced below.
[0014] like Figure 1 As shown, a wind turbine foundation using segmented bottom plate reinforcement includes a wind turbine foundation column 1, which is a concrete casting. A plurality of anchor rods 4 fixed to the wind turbine foundation column 1 are arranged inside the wind turbine foundation column 1, and both ends of the anchor rods 4 are fixed by anchor bolts 3; a foundation bottom plate 2 is arranged on the outer periphery of the wind turbine foundation column 1; 2-5 annular segmented areas are evenly arranged on the bottom of the foundation bottom plate 2, and the 2-5 annular segmented areas are arranged outward with the wind turbine foundation column 1 as the center, and the 2-5 annular segmented areas all include a plurality of mutually perpendicular annular reinforcements and radial reinforcements, and along the direction of outward arrangement with the wind turbine foundation column 1 as the center, the distance between the annular reinforcements increases successively, and the distance between the radial reinforcements remains fixed.
[0015] The annular segmented area close to the wind turbine foundation column 1 is the main annular segmented area 51, and the remaining annular segmented areas are all secondary annular segmented areas 52; the main annular segmented area 51 includes two layers of mutually perpendicular annular reinforcement and radial reinforcement, and the distance between each layer of annular reinforcement of the main annular segmented area 51 is equal; the secondary annular segmented area 52 includes a layer of mutually perpendicular annular reinforcement and radial reinforcement.
[0016] In this embodiment, two annular segmented areas are evenly arranged at the bottom of the basic base plate 2 .
Claims
1. A wind turbine foundation using segmented reinforcement of a bottom plate, comprising a wind turbine foundation column (1), the outer periphery of which is provided with a foundation bottom plate (2), characterized in that: The bottom of the foundation base plate (2) is evenly provided with 2-5 annular segmented areas, and the 2-5 annular segmented areas are arranged outward with the fan foundation column (1) as the center. The 2-5 annular segmented areas all include a plurality of mutually perpendicular annular reinforcements and radial reinforcements, and in the direction of outward arrangement with the fan foundation column (1) as the center, the distance between the annular reinforcements increases successively, and the distance between the radial reinforcements remains fixed.
2. The wind turbine foundation using segmented reinforcement of the bottom plate according to claim 1 is characterized in that: The annular segmented area close to the fan foundation column (1) is a main annular segmented area (51), and the remaining annular segmented areas are all secondary annular segmented areas (52). The main annular segmented area (51) includes two layers of mutually perpendicular annular reinforcement and radial reinforcement; the secondary annular segmented area (52) includes a layer of mutually perpendicular annular reinforcement and radial reinforcement.
3. The wind turbine foundation using segmented reinforcement of the bottom plate according to claim 2 is characterized in that: The distance between each layer of annular reinforcement in the main annular segmented area (51) is equal.
4. The wind turbine foundation using segmented reinforcement of the bottom plate according to claim 1 is characterized in that: The fan foundation column (1) is a concrete cast part, and a plurality of anchor rods (4) fixed to the fan foundation column (1) are arranged inside the fan foundation column (1), and the two ends of the anchor rods (4) are fixed by anchor bolts (3).