基于等效距离点源法的地震动模拟方法研究

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	英文篇名：Study on Ground Motion Simulation Method Based on Equivalent Distance Point Source 作者：李亚楠 英文作者：LI Ya-nan;CITIC Construction Co.,Ltd.; 关键词：地震动 ; 随机性方法 ; 点源法 ; 有限断层法 英文关键词：ground motion;;stochastic method;;point-source method;;finite-fault method 中文刊名：价值工程 英文刊名：Value Engineering 机构：中信建设有限责任公司; 出版日期：2019-05-18 出版单位：价值工程 年：2019 期：14 语种：中文; 页：128-130 页数：3 CN：13-1085/N ISSN：1006-4311 分类号：TU352.11

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。
        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.

引文

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