［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。
［关键词］反应谱；阻尼比；阻尼力；弹性力；阻尼调整系数
中图分类号：TU318 文献标识码：A文章编号：1002-848X(2011)11-0016-06
Researches about the response spectra with different damping ratio
Luo Kaihai, Wang Yayong(CABR Technology Co., Ltd., China Academy of Building Research, Beijing 100013，China)
Abstract: 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.
Keywords: response spectra; damping ratio; damping force; elastic force; damping modification factor
*“十一五”国家科技支撑计划项目（2009BAJ28B03）。
作者简介：罗开海(1973-)，男，博士，副研究员，研究方向：工程抗震，Email：kailuo@263.net。
参考文献
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