中文摘要：

为了分析海上风机结构在时域内的风振动力反应，进行了脉动风速时程数值模拟研究。根据风机结构体型特征和脉动风功率谱特性，研究了叶片与塔架风场的相干性效应，提出考虑叶片与塔架相互影响的谐波叠加法（harmony superposition method with blade—tower interaction，HSM—BTI）。通过该方法对风机结构随机风场的脉动风速时程进行数值模拟，并对计算功率谱与目标谱进行校核，验证了HSM—BTI方法对风机结构脉动风速时程模拟的适用性。

英文摘要：

To analyze the wind-induced dynamic response of offshore wind turbine in time domain, the numerical simulation of fluctuating wind velocity time series was studied. The wind fields＇ coherence effects of blades and tower were studied by the outline characteristics of offshore wind turbine and the characteristics of the fluctuating wind power spectrum. The method of HSM-BTI （harmony superposition method including blade-tower interaction） was proposed in this paper. The fluctuating wind velocity time series of offshore wind turbine were simulated by the method of HSM-BTI, and then the target spectrum and calculation spectrum were compared. The result showed that the HSM-BTI was applicable to simulating the fluctuating wind velocity time series of offshore wind turbine.