粘滞阻尼器连接的相邻隔震与非隔震建筑地震反应分析
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摘要
针对隔震结构在地震作用下隔震层位移较大,可能会与相邻非隔震结构之间产生碰撞问题进行了分析,采用简化模型对隔震与相邻非隔震结构之间布置粘滞阻尼器的减震控制的工作机理进行了研究。建立了隔震与相邻非隔震结构之间布置粘滞阻尼器减震控制的数值仿真分析模型,研究了粘滞阻尼器的阻尼系数、布置位置以及隔震结构隔震层刚度对结构顶点位移的影响。结果表明:随着阻尼器阻尼系数和隔震结构隔震层刚度的增加,隔震结构顶层位移也随之增大,阻尼器布置位置越靠近隔震层,相邻非隔震结构顶层位移控制效果越明显。
The problem of the base-isolated structure which is possible to pound adjacent buildings on account of the large horizontal displacement of isolated story is analyzed.The mechanism of the linking viscous dampers connecting base-isolated structure with adjacent building is studied with simplified model.The numerical analysis model of the linking viscous dampers connecting base-isolated structure with adjacent building is built to research the influence on the change of damping coefficient,distributing of damper and stiffness of isolated story.The results show that the top displacement of the isolated structure increases with damping coefficient of the viscous damper and stiffness of isolated story.The shorter the distance between the installed position and isolated story of the damper is,the better the control effect of the top displacement of the adjacent general structure will get.
The problem of the base-isolated structure which is possible to pound adjacent buildings on account of the large horizontal displacement of isolated story is analyzed.The mechanism of the linking viscous dampers connecting base-isolated structure with adjacent building is studied with simplified model.The numerical analysis model of the linking viscous dampers connecting base-isolated structure with adjacent building is built to research the influence on the change of damping coefficient,distributing of damper and stiffness of isolated story.The results show that the top displacement of the isolated structure increases with damping coefficient of the viscous damper and stiffness of isolated story.The shorter the distance between the installed position and isolated story of the damper is,the better the control effect of the top displacement of the adjacent general structure will get.
引文
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[3]周云,邓雪松,吴从晓.高层建筑耗能减震新体系概念与实现[J].工程抗震与加固改造,2007,29(6):1～9Zhou Yun,Deng Xue-song,Wu Cong-xiao.The Conceptand Realization of the New Systems of Tall Building withDissipated Devices[J].Earthquake ResistantEngineering and Retrofitting,2007,29(6):1-9(inChinese)
[4]Xu You-Lin,Zhen Sheng,Kojm,et al.ExperimentalInvestigation of Adjacent Buildings Connected by FluidDamper[J].Earthquake Engineering and StructrualDynamics,1999,28(6):609～631
[5]Xilin Lu,Zhiguo Gong,Dagen Weng,et al.TheApplication of a New Structural Control Concept for TallBuilding with Large Podium Structure[J].EngineeringStructures,2007,29(2007):1833～1844
[6]Jinkoo Kim,Jingook Ryu and Lan Chung.SeismicPerformance of Structures Connected by ViscoelasticDampers[J].Engineering structures,2006,28(2006):183～195
[7]Bhaskararao A V and Jangid R S.Optimum ViscousDamper for Connecting Adjacent SDOF Structures forHarmonic and Stationary White-noise RandomExcitations[J].Earthquake Engineering and StructuralDynamics,2007,36(2007):563～571.
[8]彭凌云,闫维明.消能装置在相邻结构减震控制中的应用[J].北京工业大学学报,2006,31(2):138～143Peng Ling-yun,Yan Wei-ming.Research on the Use ofEnergy Dissipating Devices in Vibration Control ofAdjacent Buildings[J].Journal of Beijing University ofTechnology,2006,31(2):138～143(in Chinese)
[9]朱宏平,翁顺,陈晓强.控制两相邻结构地震响应的Maxwell模型流体阻尼器优化参数研究[J].应用力学学报,2006,23(2):296～300Zhu Hong-ping,Weng Shun,Chen Xiao-qiang.Optimum Parameters of Maxwell Model-definedDampers for Reducing the Seismic Responses ofAdjacent Structures under Earthquake[J].ChineseJournal of Applied Mechanics,2006,23(2):296～300(In Chinese)
[10]Matsagar V A,Jangid R S.Seismic Response of Base-isolated Structures during Impactwith Adjacent Structures[J].Engineering Structures,2003,25:1311～1323
[11]Athanassiadou C J,Penelis G G,Kappos A J.SeimicResponse of Adjacent Buildings with Similar or DifferentDynamic Characteristics[J].Earthquake Spectra,1994,10(2):293～317
[12]Kasai K,Maison B F.Building Pounding DamageDuring the 1989 Loma Prieta Earthquake[J].Engineering Structures,1997,19(3):195～207
[13]赵建伟,邹立华,方雷庆.考虑相邻建筑物碰撞的基础隔震结构地震反应分析[J].振动与冲击,2010,29(5):215～219Zhao Jian-wei,Zou Li-hua,Feng Lei-qing.SeismicResponse Analysis of Base-isolated StructuresConsidering Pounding of Adjacent Buildings[J].Journalof Vibration and Shock,2010,29(5):215～219(inChinese)
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