Steel sheet pile cylindrical foundation for land wind power generation

A steel sheet pile cylindrical foundation for land wind power comprises a circle of composite wall, a lower dinting plate and a bearing platform foundation from bottom to top in sequence. The composite wall is of a cylindrical structure formed by sequentially, alternately and fixedly connecting steel pipe piles and Larsen steel sheet piles in a surrounding mode. The bottom surface of the lower dinting bottom plate is fixedly supported by the top surface of the composite wall; the bearing platform foundation is fixed on the lower dinting bottom plate, a plurality of pre-stressed anchor cables are uniformly distributed in the circumferential direction of the bearing platform foundation, and the pre-stressed anchor cables are used for fixing a fan tower tube on the bearing platform foundation; the bearing platform foundation is hollow in the axial direction. The pile foundation and the foundation pit supporting wall technology are combined to form the large-diameter cylindrical structure, the problem that a larg