基于三维势流理论对半潜式生产平台波浪载荷响应进行数值分析,并通过优化分析,以4个平台主尺度为变量进行波浪载荷预报,研究平台主尺度变化对平台波浪载荷的影响.利用谱分析预报方法,研究波浪浪向及周期对平台波浪载荷的敏感性,结合波浪载荷传递函数的特征,讨论以较危险的波浪载荷及组合波浪载荷确定设计波的方法.得到目标半潜式平台主尺度变化对波浪载荷的变化特点,为主尺度选型提供参考;总结平台波浪载荷对波浪方向及周期敏感性影响的特点及主控设计波选择方法,为半潜式生产平台后续的结构设计提供参考.%Sensitivity analysis for a induced loads for a semi-submersible production unit in South China Sea is presented,with the consideration of principal dimension,wave direction and period.Numerical analysis is carried out for wave load responses of the semi-submersible based on three-dimensional potential theories.With the help of optimized method,the impacts to wave induced loads by four variation principal dimensions are discussed.The critical wave loads and combination are evaluated as parameters of design waves by sensitivity analysis for wave induced loads of wave direction and period.The rules of changing on wave induced loads with principal dimension and wave direction and period are summarized,so as to make a conclusion for the subsequent design and structure research of semi-submersible production unit.
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