场地特征对不同高度建筑结构地震反应的影响
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摘要
多层及高层建筑结构的地震响应通常通过反应谱分析得到。我国抗震规范中给出的设计反应谱及设计地震分组和场地类别的规定使结构地震响应分析简单易行且具有很好可靠性。采用三个分别为2层、5层和17层的住宅结构模型,分析其在不同的设计地震分组和场地类别下结构地震响应的差异,得到多层及高层建筑结构地震响应对场地特征的敏感性。结果表明,低层建筑结构的地震响应对场地特征敏感性较低;高层建筑结构的地震响应对场地特征有较大敏感性,且对场地类别的敏感程度比对设计地震分组的敏感程度高。
Structural responses of multistory buildings under minor earthquakes are usually obtained from response spectrum analysis.The Chinese code for seismic design offers seismic response spectra which considering design characteristic-periods and soil conditions.This makes structural response analysis under minor earthquakes easy and reliable.Three cases study of a 2-stoty、a 5-story and a 17-story building models were used to assess the earthquake response sensitivity to the site condition for multistory building structures.Response spectrum analyses with different design characteristic-periods and soil conditions were performed on the three building models.The results demonstrate that the response of low-rise buildings is not sensitive to the site condition,while the structural response of high-rise buildings is.It was also found that structural responses of high-rise buildings is more sensitive to the soil condition than to the design characteristic-period.
Structural responses of multistory buildings under minor earthquakes are usually obtained from response spectrum analysis.The Chinese code for seismic design offers seismic response spectra which considering design characteristic-periods and soil conditions.This makes structural response analysis under minor earthquakes easy and reliable.Three cases study of a 2-stoty、a 5-story and a 17-story building models were used to assess the earthquake response sensitivity to the site condition for multistory building structures.Response spectrum analyses with different design characteristic-periods and soil conditions were performed on the three building models.The results demonstrate that the response of low-rise buildings is not sensitive to the site condition,while the structural response of high-rise buildings is.It was also found that structural responses of high-rise buildings is more sensitive to the soil condition than to the design characteristic-period.
引文
[1]周锡元.抗震性能设计与三水准设防[J].土木水利(台湾),2003,30(5):21-32.Zhou Xiyuan.Performance seismic design and three seismic performance objectives[J].Civil and Hydraulic Engineering(Taiwan),2003,30(5):21-32.(in Chinese)
[2]李杰,李国强.地震工程学导论[M].北京:地震出版社,1992:64-65.Li Jie,Li Guoqiang.Introduction to earthquake engineering[M].Beijing:Earthquake Press,1992:6465.(in Chinese)
[3]兰海燕,唐光武,张力.拟合桥梁标准反应谱的金井清谱参数[J].结构工程师增刊(全国结构计算理论与工程应用学会会议论文集),2003(S).(in Chinese)Lan Haiyan,Tang Guangwu,Zhang Li.Using curve fitting to determine the parameters of Kanai-Tajimi Spectrum based on the bridge aseismic design code[J].Structural Engineers,2003(S).(in Chinese)
[4]Chopra A K.结构动力学:理论及其在地震工程中的作用[M].北京:清华大学出版社,2009.Chopra A K.Dynamics of structures:theory and applications to earthquake engineering[M].Beijing:Tsinghua University Press,2009.(in Chinese)
[5]中华人民共和国建设部.GB 50011—2010建筑抗震设计规范[S].北京:中国建筑工业出版社,2010.Ministry of Construction of the People’s Republic of China.GB 50011—2010 Code for seismic design of buildings[S].Beijing:China Architecture and Building Press,2010.(in Chinese)
[6]吕西林,周定松.考虑场地类别与设计地震分组的延性需求谱和弹塑性位移反应谱[J].地震工程与工程振动,2004,24(1):39-48.Lu Xilin,Zhou Dingsong.Ductility demand spectra and inelastic displacement spectra considering soil conditions and design characteristic periods[J].Earthquake Engineering and Engineering Vibration,2004,24(1):39-48.(in Chinese)
[7]谢礼立,周雍年,胡成祥,等.地震动反应谱的长周期特性[J].地震工程与工程振动,1990,10(1):1-20.Xie Lili,Zhou Yongnian,Hu Chengxiang,et al.Characteristics of response spectra of long period earthquake ground motion[J].Earthquake Engineering and Engineering Vibration,1990,10(1):120.(in Chinese)
[8]张振炫,陈清军.高层建筑结构长周期地震反应的比较研究[J].结构工程师,2009,25(4):78-84.Zhang Zhenxuan,Chen Qingjun.A comparative study on long-period seismic responses for high-rise structures[J].Structural Engineers,2009,25(4):7884.(in Chinese)
[2]李杰,李国强.地震工程学导论[M].北京:地震出版社,1992:64-65.Li Jie,Li Guoqiang.Introduction to earthquake engineering[M].Beijing:Earthquake Press,1992:6465.(in Chinese)
[3]兰海燕,唐光武,张力.拟合桥梁标准反应谱的金井清谱参数[J].结构工程师增刊(全国结构计算理论与工程应用学会会议论文集),2003(S).(in Chinese)Lan Haiyan,Tang Guangwu,Zhang Li.Using curve fitting to determine the parameters of Kanai-Tajimi Spectrum based on the bridge aseismic design code[J].Structural Engineers,2003(S).(in Chinese)
[4]Chopra A K.结构动力学:理论及其在地震工程中的作用[M].北京:清华大学出版社,2009.Chopra A K.Dynamics of structures:theory and applications to earthquake engineering[M].Beijing:Tsinghua University Press,2009.(in Chinese)
[5]中华人民共和国建设部.GB 50011—2010建筑抗震设计规范[S].北京:中国建筑工业出版社,2010.Ministry of Construction of the People’s Republic of China.GB 50011—2010 Code for seismic design of buildings[S].Beijing:China Architecture and Building Press,2010.(in Chinese)
[6]吕西林,周定松.考虑场地类别与设计地震分组的延性需求谱和弹塑性位移反应谱[J].地震工程与工程振动,2004,24(1):39-48.Lu Xilin,Zhou Dingsong.Ductility demand spectra and inelastic displacement spectra considering soil conditions and design characteristic periods[J].Earthquake Engineering and Engineering Vibration,2004,24(1):39-48.(in Chinese)
[7]谢礼立,周雍年,胡成祥,等.地震动反应谱的长周期特性[J].地震工程与工程振动,1990,10(1):1-20.Xie Lili,Zhou Yongnian,Hu Chengxiang,et al.Characteristics of response spectra of long period earthquake ground motion[J].Earthquake Engineering and Engineering Vibration,1990,10(1):120.(in Chinese)
[8]张振炫,陈清军.高层建筑结构长周期地震反应的比较研究[J].结构工程师,2009,25(4):78-84.Zhang Zhenxuan,Chen Qingjun.A comparative study on long-period seismic responses for high-rise structures[J].Structural Engineers,2009,25(4):7884.(in Chinese)
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