关于不同阻尼比反应谱的研究  

Researches about the response spectra with different damping ratio

作　　者：罗开海[1] 王亚勇[1] 

机构地区：[1]中国建筑科学研究院建研科技股份有限公司,北京100013

出　　处：《建筑结构》2011年第11期16-21,共6页Building Structure

基　　金："十一五"国家科技支撑计划项目(2009BAJ28B03)

摘　　要：回顾了中、美、欧抗震设计规范关于不同阻尼比反应谱的相关规定及其存在的问题。通过理论分析指出,长周期、大阻尼的结构,阻尼力的影响不可忽略,工程设计反应谱应以弹性力为依据进行标定。根据实际地震记录反应谱的综合阻尼调整系数的分析,给出了规范(GB 50011—2001)的反应谱修正方案。The related provisions in the seismic design codes of China,America and Europe about the design response spectra with different damping ratio,and the unreasonable respects about these provisions were reviewed.Through the theory analysis,it was pointed out that for the long period and large damping structures,the damping force shall not be neglected,and the response spectra applied in the engineering design should be determined by the elastic force of SDOF.According to the analytical results of the comprehensive damping modification factors of the response spectra of a number of earthquake records,two modification proposals for the design response spectra in Code for seismic design og buildings（GB 50011—2001） are presented.

关 键 词：反应谱 阻尼比 阻尼力 弹性力 阻尼调整系数 

分 类 号：TU318[建筑科学—结构工程]