Reinforced concrete hollow cone mountain wind power flexible foundation and its construction method

Abstract

The invention discloses a mountain area reinforced concrete hollow-cone flexible wind power foundation and a construction method of the mountain area reinforced concrete hollow-cone flexible wind power foundation. The flexible wind power foundation comprises a conical foundation pit, and a junked tire rubber particle layer is laid along the wall of the foundation pit. A plain concrete cushioning layer is laid on the surface of the rubber particle layer, reinforced concrete is poured on the plain concrete cushioning layer, and therefore a hollow frustum-cone foundation with a bottom plate and side walls is formed. The frustum-cone foundation is filled with muck dug out from the foundation pit in a layered mode, and the surface of the muck for filling is flattened. A plain concrete cushioning layer is laid on the surface of the muck, and a foundation top plate formed by pouring reinforced concrete on the surface of the plain concrete cushioning layer. Vertical anchor bars are laid in the center of the frustum-cone foundation, the bottoms of the anchor bars extend into the concrete of the bottom plate, and the tops of the anchor bars are higher than the foundation top plate and then are anchored in a wind power tower. Pollution to the environment by wind power construction is reduced, meanwhile, the construction cost for the mountain area wind power foundation is lowered, and the stability of a wind turbine generator is improved.

Description

technical field [0001] The invention relates to a foundation form in the fields of civil engineering and electric power engineering, and is especially suitable as a foundation for wind power in mountainous areas, that is, a reinforced concrete hollow cone flexible foundation for wind power in mountainous areas. Background technique [0002] At present, the foundation of large-scale wind power in mountainous areas generally adopts a gravity-type shallow-buried reinforced concrete circular foundation, which has the following defects: First, the amount of concrete is large, at least 250m 3 At the same time, the amount of steel bars used is relatively large; second, the foundation pouring construction is a large-volume concrete construction, and the internal hydration heat and deformation cracking of the concrete must be strictly controlled during pouring and curing, and the construction technology is high; Long bolt anchors not only increase the project cost and construction pr...

AI Technical Summary

Problems solved by technology

[0002] At present, the foundation of large-scale wind power in mountainous areas generally adopts a gravity-type shallow-buried reinforced concrete circular foundation, which has the following defects: First, the amount of concrete is large, at least 250m 3 At the same time, the amount of steel bars used is relatively large; second, the foundation pouring construction is a large-volume concrete construction, and the internal hydration heat and deformation cracking of the concrete must be strictly controlled during pouring and curing, and the construction technology is high; Long bolt anchors not only increase the project cost and construction process, but also because the foundation and the foundation are rigidly connected, under the action of cyclic load, the anchor is prone to fatigue fracture and failure; the fourth is that the excavation of the foundation produces a lot of waste rock, The general treatment method is to discard nearby, which not only causes environmental damage, but also has a high accumulation of muck that will affect the stability of nearby wind turbines

The foundation disclosed in this patent shows rigidity, that is, resistance. The bottom of the foundation is subjected to a large bending moment, and more steel bars and concrete are needed to reinforce the foundation; It is environmentally friendly; in addition, this form of foundation has a large buried depth, and a large amount of foundation muck needs to be excavated during construction, and the construction cost is relatively high

[0003] At present, various provinces in our country are developing a large number of wind power in mountainous areas. Most of these wind power plants are located on the top of low mountains. A large amount of gravel and soil waste generated by foundation excavation are mostly discarded near the wind power project due to inconvenient transportation, which will affect or damage the environment.

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