摘要
在重大工程的地震安全性评价工作中,根据概率法地震危险性分析得到的一致概率反应谱,与建筑抗震设计规范给出的设计反应谱常常不一致,特别是在长周期部分,一致概率谱一般均低于相应的规范谱。为解决地震安全性评价得到的一致概率谱在抗震设计中的应用,本文通过比较、分析一致概率谱和规范谱,针对一致概率谱标定得到的衰减指数γ较规范谱明显偏大的特点,提出了一致概率谱衰减指数的取值方法。
Acceleration spectra determined by seismic safety evaluation for engineering site are often inconsistent with code spectra. Especially in long-period range, acceleration spectra determined by seismic safety evaluation are generally lower. In order to make usage of spectra determined by seismic safety evaluation in anti-earthquake design, we propose a method to determine consistent spectrum decaying constant γ.
出处
《震灾防御技术》
2009年第3期335-339,共5页
Technology for Earthquake Disaster Prevention
关键词
一致概率谱
规范谱
衰减指数
地震安评
Consistent spectra
Code spectra
Decaying constant
Seismic safety evaluation
