以现阶段3种典型半潜式浮式风机基础（OC4、Windfloat、Ideol）为研究对象，根据3种浮式风机基础的主要特征，采用AQWA软件建立水动力模型。基于三维势流理论，比较这3种浮式风机基础的水动力性能，在南海不同风、浪、流联合作用下的时域运动响应以及在不同水深下的适应性。得出结论：3种基础的纵荡性能相近；OC4基础在垂荡方向的时域响应统计均值和峰值最小，具有更好的综合性能；Windfloat基础的纵摇幅值响应算子（Response Amplitude Operator，RAO）最小，在垂荡方向的时域响应均值和峰值均最大，垂荡性能较差；阻尼池型基础在低频的垂荡RAO较小，纵摇RAO远大于OC4和Windfloat，在时域响应的纵摇均值最小，但峰值最大，表现出不稳定性；OC4基础和Windfloat基础在浅水区域的RAO均出现明显的放大现象，OC4基础在深水的适应性优良，Windfloat基础在中等水深水深适应性较好，阻尼池型基础的垂荡、纵摇RAO随水深增加变化不明显，在浅水中的适应性较好。分析结果可为南海海况下浮式风机基础的选型设计提供一定的参考。
Taken three typical semi-submersible floating foundations, OC4, Windfloat and Ideol, as the research objects, based on the main characteristics of the three typical floating foundations, the hydrodynamic model is established by AQWA software. Based on the three-dimensional potential flow theory, the comparative analysis of the hydrodynamic performance, the time domain motion response under combined actions of wind, wave and current in the South China Sea and the adaptability at different water depths is carried out. It is concluded that: the surge performance of three kinds of foundations is similar; OC4 foundation has the smallest mean and peak values of heave response in time domain and is of better comprehensive performance; the pitching Response Amplitude Operator (RAO) of Windfloat foundation is the smallest, the mean and peak values of the heave response in the time domain are the largest which means it is of poorer heave performance; compared with OC4 and Windfloat, the heave RAO of the damping pool foundation in low frequency is smaller, the pitch RAO is much larger, the mean value of the pitch response in the time domain is the smallest and the peak value is the largest, which shows the instability; the RAO of OC4 foundation and Windfloat foundation in shallow water is obviously enlarged, OC4 foundation is of good adaptability in deep water, Windfloat foundation is of good adaptability in medium-depth water, the heave and pitch RAO of the damping pool foundation varies not obviously with the increase of water depth which shows it is of a better adaptability in shallow water. The analysis results can provide reference for the selection and design of floating foundation in the South China Sea.