风力机塔架在风-地震作用下的动力响应

摘要

Dynamic response of horizontal-axis wind-turbine towers under wind and earthquake combined loadings is analyzed. The dynamic equation of the towers under the loads is established. The external excitation of the towers is analyzed in detail. Then, the dynamic response of a 3.0 MW wind turbine tower is calculated, and the top vibration deflections and bottom loads of the tower are obtained. The simulation results indicate that the earthquake has a significant affect on the dynamic response of the wind turbine tower.%为了获得水平轴风力机塔架在风-地震联合作用下的动力响应，首先推导了风力机塔架在风-地震联合作用下的动力学运动方程，并对塔架所受外部激励进行了详细的分析。通过对某3.0 MW风力机塔架动力响应进行计算，获得了风力机塔架在风-地震联合作用下的塔架顶部振动位移和塔架底部的载荷，分析了地震对塔架的影响程度，这些计算和分析对处于地震区域的风力机设计具有参考意义。