Wind power foundation reinforcement cage and wind power reinforced concrete extended foundation
By designing a wind power foundation steel cage to optimize the distribution of radial and annular steel bars, the problems of excessive steel bar use and high engineering costs in existing wind power expansion foundations are solved, and a more reasonable stress-bearing method and significant cost savings are achieved.
Patent Information
- Application Number
- CN202420926416.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-29
- Publication Date
- 2025-04-15
- Estimated Expiration
- 2034-04-29
AI Technical Summary
The existing wind power expansion foundation has problems in the reinforcement design of radial steel bars and circumferential steel bars. The radial steel bars are under a large force but insufficient reinforcement, and the circumferential steel bars are under a small force and too many configurations, resulting in an increase in the use of steel bars and high engineering costs.
A wind power foundation steel cage is designed, including upper and lower steel mesh and outer cylindrical steel mesh. Through the combination of radial steel bars and circumferential steel bars arranged radially, the distribution and stress mode of steel bars are optimized, and the number of configurations of circumferential steel bars is reduced.
By optimizing the distribution of steel bars, the stress cross-section of radial steel bars increases and the spacing of the ring steel bars increases, which significantly saves the use of steel bars, reduces the project cost, and achieves a more reasonable stress method.
Smart Images
Figure CN222758935U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of wind power equipment, in particular to a wind power foundation steel cage and a wind power reinforced concrete extended foundation. Background Art
[0002] Wind turbine towers are tall structures. Wind turbines have the special characteristics of bearing repeated loads in 360° directions and large eccentric forces. The foundation bears large horizontal loads and overturning moments on the upper part. According to the general principles of foundation design, on the premise of meeting the load requirements of the upper structure, it is advisable to give priority to shallow foundations with simple types, low construction difficulty and low cost. Extended foundations are simple in shape, small in formwork engineering, and convenient and quick in construction. Extended foundations are generally used.
[0003] The existing technology, that is, the existing problems of the reinforcement of the top plate and the bottom plate of the extended part of the extended foundation are:
[0004] (1) According to the stress analysis, the radial reinforcement of the extended part of the extended foundation is obviously subjected to greater stress. Its reinforcement is controlled by the stress, while the circumferential reinforcement is subjected to less stress. It is often structural reinforcement. Sometimes, the radial reinforcement is placed under the corresponding circumferential reinforcement in the top plate, which will cause the radial reinforcement to bear a smaller stress section and a smaller bearing capacity.
[0005] (2) The annular reinforcement is subjected to less force, and the reinforcement is controlled for structural requirements. In addition, the height difference between the edge of the cone and the root section of the extended foundation is large. According to the equal diameter and equal spacing, it can only be configured according to the root structural requirements, resulting in a very small spacing between the annular reinforcements, which greatly increases the number of annular reinforcements. Utility Model Content
[0006] The utility model aims to solve one of the technical problems in the related art at least to a certain extent. To this end, the embodiment of the utility model provides a wind power foundation steel bar cage, which can reduce the amount of steel bars used.
[0007] The embodiment of the utility model also proposes a wind power reinforced concrete extended foundation.
[0008] The wind power foundation steel cage of the utility model embodiment comprises an upper steel mesh, a lower steel mesh and an outer cylindrical steel mesh, the lower end of the outer cylindrical steel mesh is connected to the outer circumference of the lower steel mesh, the upper end of the outer cylindrical steel mesh is connected to the outer circumference of the upper steel mesh, the spacing between the lower steel mesh and the upper steel mesh in the up and down directions gradually increases from outside to inside along the radial direction of the outer cylindrical steel mesh, the upper steel mesh comprises upper radial steel bars and upper annular steel bars connected to the upper radial steel bars, the upper radial steel bars are arranged radially, the upper annular steel bars extend along the circumference of the upper steel mesh and are spaced from each other by an upper spacing along the radial direction of the upper steel mesh, the upper spacing between adjacent upper annular steel bars is divided into a plurality of upper spacing groups, the upper spacing within the same upper spacing group is the same as each other, and the upper spacing between adjacent upper annular steel bars is the same as each other. The spacing group includes an inner upper layer spacing group and an outer upper layer spacing group located outside the inner upper layer spacing group, the upper layer spacing in the inner upper layer spacing group is smaller than the upper layer spacing in the outer upper layer spacing group; the lower layer steel mesh includes a lower layer radial steel bar and a lower layer annular steel bar connected to the lower layer radial steel bar, the lower layer radial steel bar is arranged radially, the lower layer annular steel bar extends along the circumference of the lower layer steel mesh and is spaced from each other by a lower layer spacing along the radial direction of the lower layer steel mesh, the lower layer spacing between adjacent lower layer annular steel bars is divided into a plurality of lower layer spacing groups, the lower layer spacings in the same lower layer spacing group are the same, adjacent lower layer spacing groups include an inner lower layer spacing group and an outer lower layer spacing group located outside the inner lower layer spacing group, the lower layer spacing in the inner lower layer spacing group is smaller than the lower layer spacing in the outer lower layer spacing group.
[0009] In some embodiments, the lower layer of steel mesh is horizontally arranged, and the upper layer of steel mesh is inclined upward in a direction from the periphery toward the center.
[0010] In some embodiments, the wind power foundation steel cage also includes an inner cylindrical steel mesh, the lower end of the inner cylindrical steel mesh is connected to the inner circumference of the lower steel mesh, and the inner circumference of the upper steel mesh is connected to the outer circumferential wall of the inner cylindrical steel mesh.
[0011] In some embodiments, the upper steel mesh and the outer steel mesh are in annular shapes, and the outer cylindrical steel mesh and the inner cylindrical steel mesh are both in cylindrical shapes.
[0012] The wind power reinforced concrete extended foundation of the utility model embodiment comprises a concrete body and a wind power foundation steel cage. The wind power foundation steel cage is arranged in the concrete body, and the wind power foundation steel cage is the wind power foundation steel cage according to the above embodiment.
[0013] In some embodiments, the concrete body is further provided with a cushion layer located below the wind power foundation steel cage.
[0014] The utility model has at least the following beneficial effects:
[0015] 1. According to the force analysis, the radial steel bars are subjected to greater force. The radial steel bars of the extended part of the fan extended foundation are arranged on the outside of the annular steel bars. The cross-section of the radial steel bars is larger, and the force is reasonable.
[0016] 2. The reinforcement of the annular reinforcement is generally controlled by the structural requirements. According to the frustum of the expanded part of the wind turbine reinforced concrete foundation, the cross-section gradually thickens from the edge to the root, and the upper and lower annular reinforcements are divided into three sections. Each section adopts a distribution method with the same diameter but different spacing according to its cross-sectional thickness to meet the structural requirements of different sections; since the edge section has the smallest cross-sectional height, its distribution spacing is the largest according to the structural requirements, and its annular reinforcement is the longest, so the annular reinforcement is significantly saved, the overall reinforcement is also significantly reduced, and the project cost is reduced. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of a wind power reinforced concrete extended foundation according to an embodiment of the utility model.
[0018] Figure 2 It is a top view of the wind power steel bar structure of an embodiment of the utility model. DETAILED DESCRIPTION
[0019] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but cannot be understood as limiting the present invention.
[0020] The wind power foundation steel cage of the utility model embodiment includes an upper steel mesh, a lower steel mesh and an outer cylindrical steel mesh, the lower end of the outer cylindrical steel mesh is connected to the outer circumference of the lower steel mesh, the upper end of the outer cylindrical steel mesh is connected to the outer circumference of the upper steel mesh, the spacing between the lower steel mesh and the upper steel mesh in the up and down directions gradually increases from the outside to the inside along the radial direction of the outer cylindrical steel mesh, the upper steel mesh includes an upper radial steel bar 2 and an upper annular steel bar connected to the upper radial steel bar 2, the upper radial steel bar 2 is radially arranged, the upper annular steel bars extend along the circumference of the upper steel mesh and are spaced from each other by an upper spacing along the radial direction of the upper steel mesh, the upper spacing between adjacent upper annular steel bars is divided into a plurality of upper spacing groups, the upper spacings within the same upper spacing group are the same as each other, and the adjacent upper spacings The group includes an inner upper layer spacing group and an outer upper layer spacing group located outside the inner upper layer spacing group, the upper layer spacing in the inner upper layer spacing group is smaller than the upper layer spacing in the outer upper layer spacing group; the lower layer steel mesh includes a lower layer radial steel bar 1 and a lower layer annular steel bar connected to the lower layer radial steel bar 1, the lower layer radial steel bar 1 is arranged radially, the lower layer annular steel bars extend along the circumference of the lower layer steel mesh and are spaced apart from each other by a lower layer spacing along the radial direction of the lower layer steel mesh, the lower layer spacing between adjacent lower layer annular steel bars is divided into a plurality of lower layer spacing groups, the lower layer spacings within the same lower layer spacing group are the same, adjacent lower layer spacing groups include an inner lower layer spacing group and an outer lower layer spacing group located outside the inner lower layer spacing group, the lower layer spacing in the inner lower layer spacing group is smaller than the lower layer spacing in the outer lower layer spacing group.
[0021] In some embodiments, the lower layer of steel mesh is arranged horizontally, and the upper layer of steel mesh is arranged upwardly inclined in a direction from the periphery toward the center.
[0022] In some embodiments, the wind power foundation steel cage also includes an inner cylindrical steel mesh, the lower end of the inner cylindrical steel mesh is connected to the inner circumference of the lower steel mesh, and the inner circumference of the upper steel mesh is connected to the outer circumferential wall of the inner cylindrical steel mesh.
[0023] In some embodiments, the upper steel mesh and the outer steel mesh are in annular shapes, and the outer cylindrical steel mesh and the inner cylindrical steel mesh are both cylindrical.
[0024] The wind power reinforced concrete extended foundation of the utility model embodiment comprises a concrete body and a wind power foundation steel cage. The wind power foundation steel cage is arranged in the concrete body, and the wind power foundation steel cage is the wind power foundation steel cage according to the above embodiment.
[0025] In some embodiments, a cushion layer 9 is further provided in the concrete body below the steel cage of the wind power foundation.
[0026] like Figure 1 and Figure 2As shown, in some specific embodiments, the lower radial steel bars 1 are evenly arranged on the cushion layer 9, the lower annular steel bars 3 located in section A, the lower annular steel bars 4 located in section B, and the lower annular steel bars 5 located in section C are evenly tied above the lower radial steel bars 1; the upper annular steel bars 6 located in section A, the upper annular steel bars 7 located in section B, and the upper annular steel bars 8 located in section C are evenly fixed to the top plate within the arrangement range, and the upper radial steel bars 2 are evenly tied along the top plate above the upper annular steel bars 6 located in section A, the upper annular steel bars 7 located in section B, and the upper annular steel bars 8 located in section C.
[0027] In this embodiment, the lower annular steel bars 3 of the lower annular steel bars located in section A, the lower annular steel bars 4 of the lower annular steel bars located in section B, the lower annular steel bars 5 of the lower annular steel bars located in section C, and the upper annular steel bars 6 of section A, the upper annular steel bars 7 of section B, and the upper annular steel bars 8 of section C have the same diameter and different spacings within the annular steel bar distribution ranges of different sections A, B, and C, and their spacings increase sequentially according to structural requirements along the annular steel bar distribution ranges of sections A, B, and C; the lower annular steel bars 3 of section A, the lower annular steel bars 4 of section B, the lower annular steel bars 5 of section C, and the upper annular steel bars 6 of section A, the upper annular steel bars 7 of section B, and the upper annular steel bars 8 of section C are equal in spacings along any annular steel bar distribution section in sections A, B, and C.
[0028] The annular reinforcement of this scheme saves 33% of steel compared with the annular reinforcement of the original design scheme. Due to the reduction in the number of annular reinforcements, the total steel consumption of a single wind turbine reinforced concrete extended foundation is saved by 9.1% compared with the original scheme, which saves steel significantly and reduces the project cost.
[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0030] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0031] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0032] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0033] In the present utility model, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.
[0034] Although the above embodiments have been shown and described, it is to be understood that the above embodiments are illustrative and cannot be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.
Claims
1. A wind power foundation steel cage, characterized in that: The wind power foundation steel cage comprises an upper steel mesh, a lower steel mesh and an outer cylindrical steel mesh, wherein the lower end of the outer cylindrical steel mesh is connected to the outer periphery of the lower steel mesh, the upper end of the outer cylindrical steel mesh is connected to the outer periphery of the upper steel mesh, and the spacing between the lower steel mesh and the upper steel mesh in the vertical direction gradually increases from the outside to the inside along the radial direction of the outer cylindrical steel mesh. The upper steel mesh comprises upper radial steel bars and upper annular steel bars connected to the upper radial steel bars, the upper radial steel bars are arranged radially, the upper annular steel bars extend along the circumference of the upper steel mesh and are spaced apart from each other by an upper layer spacing along the radial direction of the upper steel mesh, the upper layer spacings between adjacent upper annular steel bars are divided into a plurality of upper layer spacing groups, the upper layer spacings within the same upper layer spacing group are the same, adjacent upper layer spacing groups comprise an inner upper layer spacing group and an outer upper layer spacing group located outside the inner upper layer spacing group, the upper layer spacings in the inner upper layer spacing group are smaller than the upper layer spacings in the outer upper layer spacing group; The lower layer steel mesh includes lower layer radial steel bars and lower layer annular steel bars connected to the lower layer radial steel bars, the lower layer radial steel bars are arranged radially, the lower layer annular steel bars extend along the circumference of the lower layer steel mesh and are spaced apart from each other by a lower layer spacing along the radial direction of the lower layer steel mesh, the lower layer spacing between adjacent lower layer annular steel bars is divided into a plurality of lower layer spacing groups, the lower layer spacings within the same lower layer spacing group are the same, adjacent lower layer spacing groups include an inner lower layer spacing group and an outer lower layer spacing group located outside the inner lower layer spacing group, the lower layer spacing in the inner lower layer spacing group is smaller than the lower layer spacing in the outer lower layer spacing group.
2. The wind power foundation steel cage according to claim 1, characterized in that: The lower layer of steel mesh is arranged horizontally, and the upper layer of steel mesh is arranged obliquely upward in a direction from the periphery toward the center.
3. The wind power foundation steel cage according to claim 1 or 2, characterized in that: The wind power foundation steel cage also includes an inner cylindrical steel mesh, the lower end of which is connected to the inner circumference of the lower steel mesh, and the inner circumference of the upper steel mesh is connected to the outer circumferential wall of the inner cylindrical steel mesh.
4. The wind power foundation steel cage according to claim 3, characterized in that: The upper steel mesh and the lower steel mesh are in annular shape, and the outer cylindrical steel mesh and the inner cylindrical steel mesh are both in cylindrical shape.
5. A wind power reinforced concrete extended foundation, characterized in that: include: Concrete body; A wind power foundation steel cage, wherein the wind power foundation steel cage is arranged in the concrete body, and the wind power foundation steel cage is the wind power foundation steel cage according to any one of claims 1 to 4.
6. The wind power reinforced concrete extended foundation according to claim 5, characterized in that: The concrete body is also provided with a cushion layer located below the wind power foundation steel cage.