Fan bearing platform assembly improving pile uplift bearing capacity

Abstract

The invention discloses a fan bearing platform assembly improving pile uplift bearing capacity. The fan bearing platform assembly comprises a bearing platform and foundation piles supporting the bearing platform; the bearing platform comprises a cylindrical upper platform column, a middle cylindrical middle platform column, a lower inverted circular truncated cone and an annular bottom convex platform which are concentrically connected in the axial direction; the diameter of the upper platform column is smaller than that of the cylindrical middle platform column, the large diameter of the upper portion of the lower inverted circular truncated cone is equal to the diameter of the cylindrical middle platform column, and the outer diameter of the bottom convex platform is equal to the small diameter of the lower portion of the lower inverted circular truncated cone; an anchor bolt cage connected with a fan tower barrel stretches into the bottom of the bearing platform; a lower anchor plate of the anchor bolt cage is located in the bottom convex platform, and an upper anchor plate of the anchor bolt cage is located above the upper platform column; the conical surface of the inverted circular truncated cone and the surface of the bottom convex platform are coated with cushion layers; and the bottom of the bearing platform is vertically provided with one or more circles of cylindrical foundation piles. By inverting a traditional bearing platform type structure, the thickness of a soil covering body is decreased, the excavation quantity and the backfill quantity of bearing platform soil are substantially reduced, the vertical pressure of the piles is reduced, the uplift force of the piles is increased, and the construction difficulty is lowered.

Description

technical field [0001] The invention relates to fan foundation piles, in particular to a fan cap assembly for improving the uplift bearing capacity of piles. Background technique [0002] At present, in the process of rapid development of the wind power industry, the design ideas, methods and forms of wind turbine pile foundations have also made great progress, but the main ideas still continue to use the design ideas of building pile foundations. , the force of the pile foundation is mainly compressive, the pullout effect is not fully utilized, the structure of the pile foundation is unreasonable, and the economy is poor. The wind turbine is relatively high, and the load is mainly the bending moment. The force of the pile foundation is very different from that of the building pile foundation. A cap form with reasonable design, simple construction and strong applicability is proposed, which can give full play to the uplifting effect of piles, realize the optimization of eng...

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Problems solved by technology

[0002] At present, in the process of rapid development of the wind power industry, the design ideas, methods and forms of wind turbine pile foundations have also made great progress, but the main ideas still continue to use the design ideas of building pile foundations. The caps are relatively high and the foundation has a large weight , the force of the pile foundation is mainly compressive, the pullout effect is not fully utilized, the structure of the pile foundation is unreasonable, and the economy is poor

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