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Analytical model for response spectral ratio considering the effect of earthquake scenarios
Bulletin of Earthquake Engineering ( IF 4.6 ) Pub Date : 2021-07-03 , DOI: 10.1007/s10518-021-01166-1
Haizhong Zhang 1 , Yan-Gang Zhao 1
Affiliation  

The response spectral ratio (RSR) used to construct a design spectrum that incorporates site effects is conventionally assumed to be independent of an earthquake scenario in linear analysis. However, recent studies have found that the RSR varies significantly with an earthquake scenario, even in linear analysis. In this study, an analytical RSR model that incorporates the effect of an earthquake scenario is proposed. To this end, the mechanism behind the effect of earthquake scenarios, i.e., the variation in the RSR with an earthquake scenario, is systematically investigated by comparisons with the scenario-independent Fourier spectral ratio based on random vibration theory. The proposed RSR model is verified by comparing its results with those obtained from a SHAKE analysis considering a variety of actual soil conditions. Based on the proposed RSR model, the design spectrum incorporating site effects can be reasonably and easily constructed.



中文翻译:

考虑地震情景影响的响应谱比分析模型

用于构建包含场地效应的设计谱的响应谱比 (RSR) 通常被假定为与线性分析中的地震情景无关。然而,最近的研究发现,即使在线性分析中,RSR 也会随地震情景而显着变化。在这项研究中,提出了一种包含地震情景影响的分析 RSR 模型。为此,通过与基于随机振动理论的与场景无关的傅立叶谱比进行比较,系统地研究了地震场景影响背后的机制,即 RSR 随地震场景的变化。通过将其结果与考虑各种实际土壤条件的 SHAKE 分析获得的结果进行比较,验证了所提出的 RSR 模型。

更新日期:2021-07-04
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