珠海桂山海上风电场风电机组基础设计

Design of Wind Turbine Supporting Structure in Zhuhai Guishan Offshore Wind Farm

摘要: 珠海桂山海上风电场是我国南海第一座大型的海上风电场，其风机基础同时具有海洋结构工程、高耸结构基础、动力设备基础和复杂软弱土地基基础四种显著工程特性，地基基础设计成为该工程的关键技术难题之一。介绍了该工程风机塔基础设计内容，重点分析了海洋土参数与桩土相互作用、风机基础结构耦合分析、频率窗口问题、基础结构疲劳分析、防腐设计、灌浆分析等基础设计关键技术。

Abstract: Zhuhai Guishan Offshore Wind Farm is the first big offshore wind project in the South China Sea. The wind turbine supporting structures have four significant engineering characteristics including offshore structure engineering, towering structure, dynamic equipment, both complicate and soft sea soil as well. Design of wind turbine support structures is one of the most critical and difficult techinical challenges in this project. In this paper, general design contents of supporting structures are introduced. Some key technical topics, like soil parameters and pile-substructure interaction, turbine-substructre-foundaton integrated analysis, frequecy window problem, structure fatigue analysis, corrosion prevention design and grouted connection design are emphasized in this paper.