考虑空间变化的输入地震动的人工模拟方法研究进展

Research Progress of Artificial Simulation Method of Input Ground Motion Considering Spatial Variation

本文介绍了考虑空间变化的输入地震动的两类人工模拟方法,首先介绍了通过地震动随机振动场的功率谱密度或者是反应谱,同时考虑地震动空间变化模型来合成地震动的直接模拟法及其研究进展,然后介绍了根据已有的天然波,提取其相关信息同时考虑地震动空间变化模型来合成地震动的条件模拟方法及其研究进展,最后从工程应用的角度介绍了地震动空间变化的结构效应。

This article introduces two types of artificial simulation methods of input ground motions considering spatial variation.Firstly,it introduces the power spectrum density or response spectrum of the random vibration field of ground motions,and the direct simulation method and research progress of synthesizing ground motions by considering the spatial variation model of ground motions,and then introduces the conditional simulation method and research progress of synthesizing ground motion by extracting relevant information from existing natural waves and considering the spatial variation model of ground motion.Finally,it introduces structural effect of ground motion space changes from the perspective of engineering application.