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一致概率谱衰减指数的取值方法探讨
Discuss of Method to Determine Consistent Spectra Decaying Constant
【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。
【Abstract】 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.
【关键词】 一致概率谱;
规范谱;
衰减指数;
地震安评;
【Key words】 Consistent spectra; Code spectra; Decaying constant; Seismic safety evaluation;
【Key words】 Consistent spectra; Code spectra; Decaying constant; Seismic safety evaluation;
- 【文献出处】 震灾防御技术 ,Technology for Earthquake Disaster Prevention , 编辑部邮箱 ,2009年03期
- 【分类号】P315.9
- 【下载频次】56