竖向隔振建筑振动反应分析研究
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摘要
针对地铁隧道存在竖向振动影响其上建筑舒适度的问题,提出一种建筑竖向隔振支座,对支座性能参数进行分析研究,给出支座的竖向压刚度和拉刚度的计算方法,介绍软件中采用橡胶隔震支座单元(ISOLATOR1)和缝单元(GAP)组合模拟支座性能的方法。对布置隔振支座的结构和无隔振支座的普通结构进行竖向振动作用下的非线性时程分析,分析结果表明:组合单元模拟隔振支座的性能是可行的;采用隔振技术后结构顶层竖向加速度能明显减小,提高结构的舒适度。
Based on the problem of the vertical vibration of building on subway tunnel,a kind of vertical vibration isolation bearing is put forward.The performance parameters of isolation bearing are studied,the calculation method of vertical pressure stiffness and vertical tensile stiffness are given,the method of simulating isolation bearings using the combination unit of ISOLATOR1 unit and GAP unit is introduced.The nonlinear time history analysis of the structures with vertical vibration isolation bearing and without vertical vibration isolation bearing is conducted.The analysis results shown that the simulation of using combination unit is feasible,top story vertical acceleration of the structure with vertical vibration isolation bearing can be obviously reduced,so as to improve the building comfort.
Based on the problem of the vertical vibration of building on subway tunnel,a kind of vertical vibration isolation bearing is put forward.The performance parameters of isolation bearing are studied,the calculation method of vertical pressure stiffness and vertical tensile stiffness are given,the method of simulating isolation bearings using the combination unit of ISOLATOR1 unit and GAP unit is introduced.The nonlinear time history analysis of the structures with vertical vibration isolation bearing and without vertical vibration isolation bearing is conducted.The analysis results shown that the simulation of using combination unit is feasible,top story vertical acceleration of the structure with vertical vibration isolation bearing can be obviously reduced,so as to improve the building comfort.
引文
[1]栗润德.地铁列车引起的地面振动及隔振措施研究[D].北京:北京交通大学,2009(Li Runde.Study onthe metro induced ground vibrations and isolation measures[D].Beijing:Beijing Jiaotong University,2009(inChinese))
[2]周福霖.工程结构减震控制[M].北京:地震出版社,1997
[3]周福霖,谭平,冼巧玲,等.房屋隔震体系的研究与应用[J].建筑科学与工程学报,2006,23(2):1-8(ZhouFulin,Tan Ping,Xian Qiaoling,et al.Research andapplication of seismic isolation system for buildingstructures[J].Journal of Architecture and CivilEngineering,2006,23(2):1-8(in Chinese))
[4]刘文光.橡胶隔震支座力学性能及隔震结构地震反应分析研究[D].北京:北京工业大学,2003(LiuWenguang.Mechanics properties of rubber bearings andearthquake response analysis of isolated structure[D].Beijing:Beijing University of Technology,2003(inChinese))
[5]陈晓城.竖向地震作用下基础隔震结构的动力响应分析[D].广州:华南理工大学,2011(Chen Xiaocheng.Dynamic responses analysis of the stucture with base-isolation system under the action of vertical earthquake[D].Guangzhou:South China University of Technology,2011(in Chinese))
[2]周福霖.工程结构减震控制[M].北京:地震出版社,1997
[3]周福霖,谭平,冼巧玲,等.房屋隔震体系的研究与应用[J].建筑科学与工程学报,2006,23(2):1-8(ZhouFulin,Tan Ping,Xian Qiaoling,et al.Research andapplication of seismic isolation system for buildingstructures[J].Journal of Architecture and CivilEngineering,2006,23(2):1-8(in Chinese))
[4]刘文光.橡胶隔震支座力学性能及隔震结构地震反应分析研究[D].北京:北京工业大学,2003(LiuWenguang.Mechanics properties of rubber bearings andearthquake response analysis of isolated structure[D].Beijing:Beijing University of Technology,2003(inChinese))
[5]陈晓城.竖向地震作用下基础隔震结构的动力响应分析[D].广州:华南理工大学,2011(Chen Xiaocheng.Dynamic responses analysis of the stucture with base-isolation system under the action of vertical earthquake[D].Guangzhou:South China University of Technology,2011(in Chinese))
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