大水深离岸型海上测风塔整体有限元分析

Analysis of offshore anemometer tower in deep water by finite element method

我国目前没有可直接运用于大水深、工程环境复杂的海上测风塔的设计技术标准。根据我国《港口工程地基规范》及相关工程技术标准,利用通用有限元结构软件分析了测风塔结构受力;同时依据国际通用的美国石油行业《海上固定平台入级与建造规范》(即API RP 2A规范),利用海工结构有限元分析软件对测风塔进行了结构分析。计算分析内容包括:测风塔多种设计荷载、多种设计工况、关键节点位移、杆件内力和疲劳分析等。两种计算结果基本一致,均能满足相应规范要求,说明所选取的设计参数较为合理,相关的工程设计经验可为类似工程及海上风电场建设提供参考借鉴。

In China, there is no technical standard for the engineering design of wind measurement tower in deep sea water with complicated engineering condition. To ensure the safety and reliability of anemometer tower of offshore wind power plants, general FEM software is employed to analyze the structural stress of anemometer tower under the guidance of Chinese Technical Standard for Port Engineering firstly; then a professional marine structure FEM software is employed to conduct the structure anal- ysis for the anemometer tower based on the APIRP 2A, a USA petroleum industry standard. The structure analysis work consists of multiple designed loading, multiple eases, key nodes displacement, element internal force and fatigue analysis. The two calculation results show consistence and both satisfy the relevant requirements specified in the technical standards. The parameters adopted in design are reasonable and the experience in the design of this project can provide reference for the design and construe. tion of similar offshore wind power plants in future.