基础隔震结构反应谱拟谱与真谱差异研究
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摘要
基于反应谱理论的隔震结构简化计算需要寻求并建立适合长周期和大阻尼比情况下的反应谱。文中指出规范反应谱及其拟相对位移反应谱在长周期部分存在的问题,对规范反应谱是否可用于隔震结构简化计算进行了分析,然后通过建立隔震结构反应谱,比较了隔震结构反应谱拟谱与真谱差异,分析了造成这些差异的原因,最后以算例具体分析规范反应谱理论的"由地震作用求地震作用效应"方法在隔震结构中的适用性。
Simplified calculation of a isolated structure based on theory of response spectra needs to seek and establish response spectra that are suitable for a structure with long natural period and large damping ratio.Some issues existed in long period part of code response spectrum and pesudo response spectrum a pointed out in this paper,and whether code response spectra are suitable for simplified calculation of the isolated structure are also analyzed.Based on the analyses,differences between pseudo and real response spectra of the isolated structure are compared and analyzed,further more the reasons caused these differences are discussed.In the end,the suitablity of the method widely used in theory of code response spectra,that is the seismic action effect is solved from earthquake action,is analyzed concretely with one project example.
Simplified calculation of a isolated structure based on theory of response spectra needs to seek and establish response spectra that are suitable for a structure with long natural period and large damping ratio.Some issues existed in long period part of code response spectrum and pesudo response spectrum a pointed out in this paper,and whether code response spectra are suitable for simplified calculation of the isolated structure are also analyzed.Based on the analyses,differences between pseudo and real response spectra of the isolated structure are compared and analyzed,further more the reasons caused these differences are discussed.In the end,the suitablity of the method widely used in theory of code response spectra,that is the seismic action effect is solved from earthquake action,is analyzed concretely with one project example.
引文
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[2]GB50011-2001,建筑抗震设计规范[S].
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[8]杨巧荣,陈建秋,刘文光,等.某全钢结构地震模拟振动台试验和理论研究[J].世界地震工程,2003,19(3):97-103.
[9]付伟庆,刘文光,王建,等.高层隔震结构的等效简化模型研究[J].地震工程与工程振动,2005,25(6):141-145.
[2]GB50011-2001,建筑抗震设计规范[S].
[3]党育,杜永峰,李慧,等编著.基础隔震结构设计及施工指南[M].北京:中国水利水电出版社、知识产权出版社,2007:221-240.
[4]胡聿贤.地震工程学[M].北京:地震出版社,2006:129-138.
[5]魏琏,郑久建.用规范反应谱计算减震结构的探讨[J].建筑结构,2004,34(10):17-20.
[6]何文福,霍达,刘文光,等.长周期隔震结构的地震反应分析[J].北京工业大学学报,2008,(4):391-397.
[7]王广军.建筑抗震设计规范手册(中册)[M].北京:中国建筑科学研究院,19990:295-299.
[8]杨巧荣,陈建秋,刘文光,等.某全钢结构地震模拟振动台试验和理论研究[J].世界地震工程,2003,19(3):97-103.
[9]付伟庆,刘文光,王建,等.高层隔震结构的等效简化模型研究[J].地震工程与工程振动,2005,25(6):141-145.
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