邻近地上结构对地下结构动力响应的影响参数
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摘要
采用有限单元法建立了一系列典型高层框架结构及地下车站的二维平面应变模型,研究了不同地震波输入、结构间距、土层刚度、土层阻尼比及地上结构基础埋深、楼层数、刚度等工况下地上结构对地下结构动力响应的影响.分析结果表明,地震波频谱成分的影响很大;随着结构间距增加,相互作用迅速减小;随着土层阻尼比减小、基础埋深增加、楼层数增加,相互作用增大;地上结构上部刚度对相互作用程度的影响不大.
Based on finite element method,a series of two-dimensional plane strain models of typical framework and underground station were built to study the influence of superstructure on infrastructure's dynamic response with various ground motion inputs,spacing between constructions,stiffness and damping of subsoil,foundation buried depth and floor and stiffness of superstructure.Results show that earthquake wave exerts a tremendous influence.Interaction diminishes rapidly with the increasing of the structure gap when the damping of subsoil decreases and the foundation buried depth and floors' number of superstructure increases,interaction gradually augments.The effect of superstructure's stiffness on interaction is negligible.
Based on finite element method,a series of two-dimensional plane strain models of typical framework and underground station were built to study the influence of superstructure on infrastructure's dynamic response with various ground motion inputs,spacing between constructions,stiffness and damping of subsoil,foundation buried depth and floor and stiffness of superstructure.Results show that earthquake wave exerts a tremendous influence.Interaction diminishes rapidly with the increasing of the structure gap when the damping of subsoil decreases and the foundation buried depth and floors' number of superstructure increases,interaction gradually augments.The effect of superstructure's stiffness on interaction is negligible.
引文
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[2]袁蕾,姜忻良.地铁换乘站不规则结构对其地震响应的影响[J].地震工程与工程振动,2011,31(1):74.YUAN Lei,JIANG Xinliang.Influence of irregular structureof subway transfer station on its seismic responses[J].Journalof Earthquake Engineering and Engineering Vibration,2011,31(1):74.
[3]刘晶波,刘祥庆,王宗纲,等.土-结构动力相互作用系统离心机振动台模型试验[J].土木工程学报,2010,43(11):114.LIU Jingbo,LIU Xiangqing,WANG Zonggang.Dynamiccentrifuge model test of a soil-structure interaction system[J].China Civil Engineering Journal,2010,43(11):114.
[4]Lou M,Wang H,Chen X,et al.Structure-soil-structureinteraction:literature review[J].Soil Dynamics andEarthquake Engineering,2011,31(12):1724.
[5]程磊,吕西林,李培振.考虑相邻结构影响的土-结构动力相互作用研究综述[J].地震工程与工程振动,2010,30(2):32.CHENG Lei,LU Xilin,LI Peizhen.A review of soil-structure dynamic interaction research considering dynamiccross interaction effect[J].Journal of Earthquake Engineeringand Engineering Vibration,2010,30(2):32.
[6]刘晶波,李彬,谷音.地铁盾构隧道地震反应分析[J].清华大学学报:自然科学版,2005,45(6):757.LIU Jingbo,LI Bin,GU Yin.Seismic response analysis ofshielded subway tunnels[J].Journal of Tsinghua University:Science and Technology,2005,45(6):757.
[7]王铁成,王卉.埋地双排复合式管体结构在SH波作用下的动力分析[J].地震工程与工程振动,2008,28(4):14.WANG Tiecheng,WANG Hui.Dynamic analysis of twinunderground composite pipe structures subjected to SH waves[J].Journal of Earthquake Engineering and EngineeringVibration,2008,28(4):14.
[8]周德良,翁智远.弹性半空间中相邻两结构在SH波作用下的动力响应[J].固体力学学报,1992,13(3):244.ZHOU Deliang,WENG Zhiyuan.The dynamic response oftwo parallel structures in elastic half-space under SH waves[J].Acta Mechanica Solida Sinica,1992,13(3):244.
[9]庄海洋,陈国兴.双洞单轨地铁区间隧道非线性地震反应分析[J].地震工程与工程振动,2006,26(2):131.ZHUANG Haiyang,CHEN Guoxing.Analysis of nonlinearearthquake response of metro double-tunnels[J].Journal ofEarthquake Engineering and Engineering Vibration,2006,26(2):131.
[10]李方杰,赵凤新,张郁山,等.相对位置的地上结构对地铁地下结构地震反应的影响[J].中国地震,2010,26(2):201.LI Fangjie,ZHAO Fengxin,ZHANG Yushan,et al.Influence of ground building’s relative position on seismicresponse of subway structure[J].Earthquake Research inChina,2010,26(2):201.
[11]楼梦麟,潘旦光,范立础.土层地震反应分析中侧向人工边界的影响[J].同济大学学报:自然科学版,2003,31(7):757.LOU Menglin,PAN Danguang,FAN Lichu.Effect of verticalartificial boundary on seismic response of soil layer[J].Journal ofTongji University:Natural Science,2003,31(7):757.
[12]楼梦麟,潘旦光.滞后阻尼在土层时域分析中的应用[J].同济大学学报:自然科学版,2004,32(3):281.LOU Menglin,PAN Danguang.Hysteretic dampingapplication in time domain analysis of soil layer[J].Journal ofTongji University:Natural Science,2004,32(3):281.
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