Dynamic Analysis of Single Pile Wind Power Foundation Structure

Abstract

The single pile offshore wind power foundation structure is the most widely used form of offshore wind power platform. The rotating frequency of the blade in the wind turbine has an important impact on the dynamic characteristics of the structure. The rule requires that the excitation frequency should avoid the natural frequency of the structure. In the numerical simulation, the pile-soil interaction is considered by applying boundary conditions. The typical foundation structures, single pile, is selected, to analyze the influence of different boundary conditions on the natural vibration characteristics of single pile offshore wind power foundation structure in ANSYS modal. And a simplified method of boundary conditions suitable for ANSYS modal analysis is proposed. The results show that the simplified boundary condition method proposed in this paper is suitable for modal analysis of single pile offshore wind power foundation structure.