基于易损性的RC框架填充墙结构概率地震安全评估
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摘要
选择多条真实地震动作为输入,采用我国抗震设计规范中的经验限值作为极限状态定义值,分别针对3层、5层和10层的RC框架填充墙结构和RC裸框架结构进行地震易损性分析,并计算结构在小震、中震和大震条件下的极限状态失效概率和破坏状态失效概率。通过对比RC框架填充墙结构和RC裸框架结构的结果可以发现:填充墙可以有效降低RC框架结构在不同地震作用下的失效概率,从而提高框架结构的地震安全水平。
A suit of real ground motion records are selected as inputs. The empirical thresholds provided by the Chinese seismic design code are adopted as the definitions of the concerned limit states. Then the seismic fragility analysis is conducted for the three-story, fivestory and ten-story RC frames with and without infilled masonry walls. The limit state failure probabilities and the damage state failure probabilities conditioned on the frequent earthquake, the design-based earthquake and the major earthquake are calculated. As compared to the results from the RC bare frames we can find that the infilled masonry walls can effectively reduce the failure probability of the RC frame structures under various earthquakes and can consequently promote the safety levels against earthquake.
A suit of real ground motion records are selected as inputs. The empirical thresholds provided by the Chinese seismic design code are adopted as the definitions of the concerned limit states. Then the seismic fragility analysis is conducted for the three-story, fivestory and ten-story RC frames with and without infilled masonry walls. The limit state failure probabilities and the damage state failure probabilities conditioned on the frequent earthquake, the design-based earthquake and the major earthquake are calculated. As compared to the results from the RC bare frames we can find that the infilled masonry walls can effectively reduce the failure probability of the RC frame structures under various earthquakes and can consequently promote the safety levels against earthquake.
引文
[1]CECS 160建筑工程抗震性态设计通则(试行)[S].北京:中国工程建设标准化协会,2004(CECS 160 General rule for performance-based seismic design of buildings[S].Beijing:China Association for Engineering Construc tion Standardization,2004(in Chinese))
[2]GB 50011–2010建筑抗震设计规范[S].北京:中国建筑工业出版社,2010(GB 50011–2010 Code for seismic design of buildings[S].Beijing:China Architecture&Building Press,2010(in Chinese))
[3]Cornell C A,Jalayer F,Hamburger R O,et al.The probabilistic basis for the 2000 SAC/FEMA steel moment frame guidelines[J].ASCE Journal of Structural Engineering,2002,128(4):526-533
[4]吕大刚,于晓辉.基于地震易损性解析函数的概率地震风险理论研究[J].建筑结构学报,2013,34(10):49-57(Lu Dagang,Yu Xiaohui.Theoretical study of probabilistic sei smic risk assessment based on analytical functions of seismic fragility[J].Journal of Building Structures,2013,34(10):49-57(in Chinese))
[5]于晓辉,吕大刚.考虑结构不确定性的地震倒塌易损性分析[J].建筑结构学报,2012,33(10):8-14(Yu Xiaohui,Lu Dagang.Seismic collapse fragility analysis considering structural uncertainties[J].Journal of Building St ructures,2012,33(10):8-14(in Chinese))
[6]于晓辉,吕大刚,王光远.多级力控制随机pushover方法[J].工程力学,2010,27(增1):6-10(Yu Xiaohui,Lu Dagang,Wang Guangyuan.A multi-level force controlled random pushover method[J].Engineering Mechnics,2010,27(S1):6-10(in Chinese))
[7]吕大刚,于晓辉,王光远.基于FORM有限元可靠度方法的结构整体概率抗震能力分析[J].工程力学,2012,29(2):1-8(Lu Dagang,Yu Xiaohui,Wang Guangyuan.Global probabilistic seismic capacity analysis of structures based on FORM finite element reliability method[J].Engineering Mechanics,2012,29(2):1-8(in Chinese))
[8]吕大刚,于晓辉,王光远.基于MVFOSM有限元可靠度方法的结构整体概率抗震能力分析[J].世界地震工程,2008,24(2):1-8(Lu Dagang,Yu Xiaohui,Wang Guangyuan.Global probabilistic seismic capacity analysis of structures based on MVFOSM finite element reliability method[J].World Earthquake Engineering,2008,24(2):1-8(in Chinese))
[9]吕大刚,于晓辉,王光远.基于Zhou-Nowak数值积分法的结构整体概率抗震能力分析[J].世界地震工程,2008,24(3):7-13(Lu Dagang,Yu Xiaohui,Wang Guangyuan.Global probabilistic seismic capacity analysis of structures based on Zhou-Nowak numerical integration method[J].World Earthquake Engineering,2008,24(3):7-13(in Chinese))
[10]吕大刚,于晓辉,王光远.基于改进点估计法的结构整体概率抗震能力分析[J].世界地震工程,2008,24(4):7-14(Lu Dagang,Yu Xiaohui,Wang Guangyuan.Global probabilistic seismic capacity analysis based on an improved point estimation method[J].World Earthquake Engineering,2008,24(4):7-14(in Chinese))
[11]Wen Y K,Ellingwood B R,Veneziano D,et al.Uncertainty modeling in earthquake engineering[R].USA:Mid-America Earthquake Center,2003
[2]GB 50011–2010建筑抗震设计规范[S].北京:中国建筑工业出版社,2010(GB 50011–2010 Code for seismic design of buildings[S].Beijing:China Architecture&Building Press,2010(in Chinese))
[3]Cornell C A,Jalayer F,Hamburger R O,et al.The probabilistic basis for the 2000 SAC/FEMA steel moment frame guidelines[J].ASCE Journal of Structural Engineering,2002,128(4):526-533
[4]吕大刚,于晓辉.基于地震易损性解析函数的概率地震风险理论研究[J].建筑结构学报,2013,34(10):49-57(Lu Dagang,Yu Xiaohui.Theoretical study of probabilistic sei smic risk assessment based on analytical functions of seismic fragility[J].Journal of Building Structures,2013,34(10):49-57(in Chinese))
[5]于晓辉,吕大刚.考虑结构不确定性的地震倒塌易损性分析[J].建筑结构学报,2012,33(10):8-14(Yu Xiaohui,Lu Dagang.Seismic collapse fragility analysis considering structural uncertainties[J].Journal of Building St ructures,2012,33(10):8-14(in Chinese))
[6]于晓辉,吕大刚,王光远.多级力控制随机pushover方法[J].工程力学,2010,27(增1):6-10(Yu Xiaohui,Lu Dagang,Wang Guangyuan.A multi-level force controlled random pushover method[J].Engineering Mechnics,2010,27(S1):6-10(in Chinese))
[7]吕大刚,于晓辉,王光远.基于FORM有限元可靠度方法的结构整体概率抗震能力分析[J].工程力学,2012,29(2):1-8(Lu Dagang,Yu Xiaohui,Wang Guangyuan.Global probabilistic seismic capacity analysis of structures based on FORM finite element reliability method[J].Engineering Mechanics,2012,29(2):1-8(in Chinese))
[8]吕大刚,于晓辉,王光远.基于MVFOSM有限元可靠度方法的结构整体概率抗震能力分析[J].世界地震工程,2008,24(2):1-8(Lu Dagang,Yu Xiaohui,Wang Guangyuan.Global probabilistic seismic capacity analysis of structures based on MVFOSM finite element reliability method[J].World Earthquake Engineering,2008,24(2):1-8(in Chinese))
[9]吕大刚,于晓辉,王光远.基于Zhou-Nowak数值积分法的结构整体概率抗震能力分析[J].世界地震工程,2008,24(3):7-13(Lu Dagang,Yu Xiaohui,Wang Guangyuan.Global probabilistic seismic capacity analysis of structures based on Zhou-Nowak numerical integration method[J].World Earthquake Engineering,2008,24(3):7-13(in Chinese))
[10]吕大刚,于晓辉,王光远.基于改进点估计法的结构整体概率抗震能力分析[J].世界地震工程,2008,24(4):7-14(Lu Dagang,Yu Xiaohui,Wang Guangyuan.Global probabilistic seismic capacity analysis based on an improved point estimation method[J].World Earthquake Engineering,2008,24(4):7-14(in Chinese))
[11]Wen Y K,Ellingwood B R,Veneziano D,et al.Uncertainty modeling in earthquake engineering[R].USA:Mid-America Earthquake Center,2003
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