近场强震作用下上海地区百米高层建筑地震动反应分析
|
摘要
首先,依据汶川地震中不同震中距基岩地震波记录,选取假设上海近场发生M8.0级强震时的基岩地震波。然后,对上海某百米高层建筑场地进行深覆盖土层地震反应分析,获得该场地在近场强震时的地表波。最后,以此百米高层建筑为例,分析该结构在此地表波作用下的地震动反应特点,从而评估近场强震对上海高层建筑的影响。分析结果表明:结构在双向地震动作用下的反应与单向地震动作用下的反应有明显不同。其中,地震动垂直分量对结构顶层节点竖向反应放大作用显著;地震动水平分量对结构顶层节点三个方向反应都有放大效应;地震动水平分量对结构层间位移角起决定性作用;地震动水平分量对结构底层角柱内力的影响大于地震动垂直分量对其的影响。
To begin with,a bedrock seismic wave as a disastrous M8.0 earthquake wave which was assumed to happen in Shanghai near field was selected,according to the different bedrock seismic wave records during Wenchuan earthquake.Then,the seismic ground responses in site of a hundred meters high-rise building were calculated and the ground seismic waves under the strong earthquake on near field were analyzed.Finally,the characteristics of the seismic response of the building were analyzed and the effect of a strong earthquake in near field was essentially discussed.The numerical results showed that the difference of the seismic response of the structure between bi-direction ground motions and one-way ground motion were obvious.The amplification effect of vertical response to the top floor under the vertical component of ground motion was significant.The horizontal component of ground motion amplified the response of the top floor in three directions.The horizontal component of ground motion affected decisively the displacement angle of the structural story.The horizontal component of ground motion had greater influnce on the inner force in bottom columns than the vertical component.
To begin with,a bedrock seismic wave as a disastrous M8.0 earthquake wave which was assumed to happen in Shanghai near field was selected,according to the different bedrock seismic wave records during Wenchuan earthquake.Then,the seismic ground responses in site of a hundred meters high-rise building were calculated and the ground seismic waves under the strong earthquake on near field were analyzed.Finally,the characteristics of the seismic response of the building were analyzed and the effect of a strong earthquake in near field was essentially discussed.The numerical results showed that the difference of the seismic response of the structure between bi-direction ground motions and one-way ground motion were obvious.The amplification effect of vertical response to the top floor under the vertical component of ground motion was significant.The horizontal component of ground motion amplified the response of the top floor in three directions.The horizontal component of ground motion affected decisively the displacement angle of the structural story.The horizontal component of ground motion had greater influnce on the inner force in bottom columns than the vertical component.
引文
[1]杨燕,楼梦麟.上海临近潜在震源发生8级强震时高层建筑地震反应分析[M]∥同济大学土木工程防灾国家重点实验室汶川地震震害研究.上海:同济大学出版社,2011:169-187. Yang Yan,Lou Menglin.Dynamic response analysis of high-rise buildings when earthquake with magnitude 8 outbreaks in potential seismic source in neighboring region of Shanghai[M]// Study on Disaster of Wenchuan Earthquake by State Key Laboratory of Disaster Reduction in Civil Engineering at Tongji University in Shanghai.Shanghai:Tongji University Press,2011, 169-187.(in Chinese)
[2]楼梦麟,杨燕.汶川地震基岩地震动特征分析[M]∥同济大学土木工程防灾国家重点实验室汶川地震震害研究.上海:同济大学出版社,2011: 008-019. Lou Menglin,Yang Yan.Analysis of bedrock wave characteristics from the wenchuan earthquake[M]// Study on Disaster of Wenchuan Earthquake by State Key Laboratory of Disaster Reduction in Civil Engineering at Tongji University in Shanghai.Shanghai: Tongji University Press,2011:8-19.(in Chinese)
[3]杨燕,楼梦麟.汶川地震动中远场深覆盖土层动力反应分析[J].防灾减灾工程学报,2011,31(4): 462-468. Yang Yan,Lou Menglin.Dynamic response analysis of far-field soil layer with deep deposit during wenchuan earthquake[J].Journal of Disaster Prevention and Mitigation Engineering,2011,31(4):462-468. (in Chinese)
[4]李小军,彭青.不同类别场地地震动参数的计算分析[J].地震工程与工程振动,2001,21(1):29-36. Li Xiaojun,Peng Qing.Calculation and analysis of earthquake ground motion parameters for different site categories[J].Journal of Earthquake Engineering and Engineering Vibration,2001,21(1 ):29-36.(in Chinese)
[5]楼梦麟,杨燕,潘小樟,等.汶川地震中上海高层建筑动力反应分析[J].建筑科学与工程学报,2009, ??26(3):82-88. Lou Menglin,Yang Yan,Pan Xiaozhang,et al.Dynamic response analysis of high-rise buildings in shanghai during wenchuan earthquake[J].Journal of Architecture and Civil Engineering,2009,26(3): 82-88.(in Chinese)
[6]潘小樟.竖向刚度不规则高层建筑地震响应特点与结构地震响应观测台阵布设[D].上海:同济大学,2009. Pan Xiaozhang.Seismic response characteristics of high-rise buildings with irregular vertical stiffness and arrangement of structural seismic response observation arrays[D].Shanghai:Tongji University,2009.(in Chinese)
[7]王元清,黄怡,石永久,等.超高层钢结构建筑动力特性与抗震性能的有限元分析[J].土木工程学报,2006,39(5):65-71. Wang Yuanqing,Huang Yi,Shi Yongjiu,et al.Finite element analysis on dynamic characteristics and seismic resistance of super high-rise steel structures [J].China Civil Engineering Journal,2006,39(5): 65-71.(in Chinese)
[8]李杰,李国强.地震工程学导论[M].北京:地震出版社,1988. Li Jie,Li Guoqiang.Introduction to earthquake engineering [M].Beijing:Earthquake Publishing House, 1988.(in Chinese)
[2]楼梦麟,杨燕.汶川地震基岩地震动特征分析[M]∥同济大学土木工程防灾国家重点实验室汶川地震震害研究.上海:同济大学出版社,2011: 008-019. Lou Menglin,Yang Yan.Analysis of bedrock wave characteristics from the wenchuan earthquake[M]// Study on Disaster of Wenchuan Earthquake by State Key Laboratory of Disaster Reduction in Civil Engineering at Tongji University in Shanghai.Shanghai: Tongji University Press,2011:8-19.(in Chinese)
[3]杨燕,楼梦麟.汶川地震动中远场深覆盖土层动力反应分析[J].防灾减灾工程学报,2011,31(4): 462-468. Yang Yan,Lou Menglin.Dynamic response analysis of far-field soil layer with deep deposit during wenchuan earthquake[J].Journal of Disaster Prevention and Mitigation Engineering,2011,31(4):462-468. (in Chinese)
[4]李小军,彭青.不同类别场地地震动参数的计算分析[J].地震工程与工程振动,2001,21(1):29-36. Li Xiaojun,Peng Qing.Calculation and analysis of earthquake ground motion parameters for different site categories[J].Journal of Earthquake Engineering and Engineering Vibration,2001,21(1 ):29-36.(in Chinese)
[5]楼梦麟,杨燕,潘小樟,等.汶川地震中上海高层建筑动力反应分析[J].建筑科学与工程学报,2009, ??26(3):82-88. Lou Menglin,Yang Yan,Pan Xiaozhang,et al.Dynamic response analysis of high-rise buildings in shanghai during wenchuan earthquake[J].Journal of Architecture and Civil Engineering,2009,26(3): 82-88.(in Chinese)
[6]潘小樟.竖向刚度不规则高层建筑地震响应特点与结构地震响应观测台阵布设[D].上海:同济大学,2009. Pan Xiaozhang.Seismic response characteristics of high-rise buildings with irregular vertical stiffness and arrangement of structural seismic response observation arrays[D].Shanghai:Tongji University,2009.(in Chinese)
[7]王元清,黄怡,石永久,等.超高层钢结构建筑动力特性与抗震性能的有限元分析[J].土木工程学报,2006,39(5):65-71. Wang Yuanqing,Huang Yi,Shi Yongjiu,et al.Finite element analysis on dynamic characteristics and seismic resistance of super high-rise steel structures [J].China Civil Engineering Journal,2006,39(5): 65-71.(in Chinese)
[8]李杰,李国强.地震工程学导论[M].北京:地震出版社,1988. Li Jie,Li Guoqiang.Introduction to earthquake engineering [M].Beijing:Earthquake Publishing House, 1988.(in Chinese)
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心