【摘要】 本文根据地震动模拟随机方法理论并结合采用有效距离的随机点源法,通过将子断层地震矩的变化等效为距离的变化,提出了一种能够考虑断层非一致滑动分布的等效距离点源法。通过对比本文方法和有限断层法在非一致分布下的傅里叶加速度谱和断层周围的峰值加速度场,证明了本文方法的正确性和有效性。而且本计算简便且效率较高,具有较强的实用性。更多还原

【Abstract】 The present study puts forward an equivalent distance point-source method based on stochastic effective distance point-source method to simulate ground motion that can consider non-uniform slip distribution on fault by translating the change of seismic moment to the change of site-to-fault distance. The correctness and effectiveness of the present method have been proven by comparing the FAS and PGA field calculated by the present method and finite-fault method. Moreover, the present method is easy to compute with higher computation efficiency and is practical.更多还原