从中国、美国、欧洲抗震设计规范谱的比较 探讨我国的抗震设计反应谱

Discussing the Seismic Response Spectrum of China from the Comparison of Seismic Codes of China, American and Europe

本文分析了中国、美国、欧洲 3 种抗震设计规范的地震动参数取值,并比较了 3 种抗震设计反应谱。结果表明,总体上说,欧洲、美国规范的加速度短周期反应谱高于中国规范。但随着周期的扩大,由于中国规范中反应谱的下降指数较小,导致了中国规范中的反应谱逐渐接近并可能超过了欧洲、美国规范。本文的结果可为我国未来抗震设计规范修订,以及地震安全性评价工作中确定设计反应谱提供参考。

This article analyses the seismic parameters and their trend in seismic codes of China, American and Europe. The results illustrate that, generally speaking, the short period acceleration response spectra in Europe and American are higher than China. However, with the increasing of the periods, the spectra of China will close and even overpass that of the other two codes, because of the smaller index in long periods. Our results can be used as references in the work of code revising and response spectra determination in seismic safety evaluation.