【摘要】 计算在地震作用下风力发电机组塔架底部的剪力和弯矩,一般需要对完整的有限元模型进行分析,计算较为复杂。当风力发电机组质量、刚度分布不详时,无法建立有限元模型,可采用本文所述推导公式进行计算,也可建立单自由度或两自由度简化模型,按照底部剪力法进行计算。误差分析表明,用底部剪力法进行风力发电机组地震作用计算,结果具有较好的精度。更多还原

【Abstract】 The base shear and moment of wind turbines under the earthquake are usually calculated through finite element analysis,which is complicated. When the mass and stiffness distribution of wind turbines are unknown,the finite element model can not be established. In this case,the formula referred in this paper can be applied to calculate the base shear and moment. Besides,the single or two degrees of freedom simplified model can be formed and the result is calculated by the base shear method. The error analysis shows that this seismic calculation of wind turbines by the base shear method yields a satisfying accuracy.更多还原