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针对海上风机Tripod基础结构的特性,采用有限元软件SACS,结合实际海洋水文数据,选择六组极端工况和两组正常使用工况研究了海上风机Tripod基础结构的控制工况及控制荷载方向,并与已有研究成果进行比较。结果表明,杆件应力、节点冲剪、桩应力校核对应的控制工况为极端工况ULS_3,地基承载力、基础结构沉降量、法兰处转角校核对应的控制工况为正常使用工况SLS_1,Tripod基础结构的控制荷载作用方向为-25°,因此对海上风机基础结构简单地进行极端工况下单个荷载方向的静力分析并不能充分反映风机结构的静力特性,应根据基础结构的构造形式、所处的海洋环境,对海上风机结构进行全方向环境荷载输入的静力分析。
According to the characteristics of marine Tripod foundation structure, the finite element software SACS was used to study the control conditions and the control load direction of the offshore wind turbine Tripod foundation structure by combining the actual marine hydrological data, selecting the six extreme working conditions and two normal working conditions. And compared with the existing research results. The results show that the control conditions corresponding to rod stress, node punching shear and pile stress checking are ULS_3. The control conditions corresponding to foundation bearing capacity, foundation settlement and flange corner checking are normal working conditions In SLS_1, the control load of Tripod infrastructure is -25 °. Therefore, the static analysis of the offshore wind turbine infrastructure simply by single load in extreme conditions does not fully reflect the static characteristics of the wind turbine structure. Based on the foundation The structure of the structure, the marine environment in which it is located, and the static analysis of the omni-directional environmental load input to the offshore wind turbine structure.