基于隔震结构Benchmark模型的隔震层刚度分布分析研究
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摘要
在隔震结构Benchmark模型的基础上,建立了相应的动力反应计算方法及计算程序,并在理想化隔震层刚度布置的情况下研究了隔震层水平刚度分布对基础隔震结构地震响应的影响。通过针对Benchmark模型设计的3种隔震方案的计算结果比较表明:当隔震层刚度中心靠近结构质心时,能显著降低结构的扭转反应,但同时增大了水平位移分量。文中在隔震结构Benchmark模型上建立的计算方法和结论为隔震体系计算和隔震方案设计提供了可靠的依据和途径。
The dynamic calculation methods and calculation procedures were adopted on the basis of the base-isolated benchmark building,and the effect of the horizontal stiffness distribution of the isolation layer on the seismic responses of the base-isolated structure was studied for an idealized stiffness distribution of the isolation layer.The results of the three isolation schemes,which were designed according to the benchmark model,show that the torsional response would be reduced while the lateral response would be increased when the stiffness center of isolation layer is close to the mass center.The dynamic calculation methods developed on the basis of the base-isolated benchmark building provide a reliable basis for the isolation system calculation and isolation design.
The dynamic calculation methods and calculation procedures were adopted on the basis of the base-isolated benchmark building,and the effect of the horizontal stiffness distribution of the isolation layer on the seismic responses of the base-isolated structure was studied for an idealized stiffness distribution of the isolation layer.The results of the three isolation schemes,which were designed according to the benchmark model,show that the torsional response would be reduced while the lateral response would be increased when the stiffness center of isolation layer is close to the mass center.The dynamic calculation methods developed on the basis of the base-isolated benchmark building provide a reliable basis for the isolation system calculation and isolation design.
引文
[1]Narasimhan S,Nagarajaiah S,Gavin H,et al.Smart base isolated benchmark building part I:problem definition[J].Structural Control and HealthMonitoring,2006,13(2-3):573-588.
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[3]Erkus B,Johnson E.Smart base isolated benchmark building part III:a sample controller for bilinear isolation[J].Structural Control and HealthMonitoring,2006,13(2-3):605-625.
[4]Narasimhan S,Nagarajaiah S,Johnson E A.Smart base isolated benchmark building part IV:phase II Sample controller for nonlinear isolation sys-tems[J].Structural Control and Health Monitoring,2008,15:657-672.
[5]Narasimhan S,Nagarajaiah S.Key Findings from the nonlinear base-isolated benchmark[C].19th Analysis and Computation Specialty Confer-ence,2010:295-304.
[6]Li Hui,Ou Jinping.A design approach for semi-active and smart base-isolated buildings[J].Structural Control and Health Monitoring,2006,13(2-3),660-681.
[7]Du Yongfeng,Wang Jiajia,Li Hui.A study on sequential optimal control algorithm for smart base isolated benchmark building[C].The Second In-ternational Conference on Dynamics,Vibration and Control,Beijing,2006.
[8]李向真,王铁成,雷丽.平面非规则隔震结构性能参数对地震反应的影响[J].地震工程与工程振动,2006,26(6):196-199.LI Xiangzhen,WANG Tiecheng,LEI Li.Influence of performance parameters of isolated irregular structures on earthquake responses[J].Journalof Earthquake Engineering and Engineering Vibration,2006,26(6):196-199.(in Chinese)
[9]王建强,杜兴量,丁永刚.隔震层(偏心)对基础滑移隔震结构平-扭耦联地震反应的影[J].振动与冲击,2010,29(4):22-26.WANG Jianqiang,DU Xingliang,DING Yonggang.Lateral-torsional coupled seismic response of a sliding base-isolated structure with an eccentricin isolation layer[J].Vibration and Shock,2010,29(4):22-26.(in Chinese)
[10]Sharma A,Jangid R S.Influence of high initial isolator of stiffness on the seismic response of a base-isolated benchmark building[J].Internation-al Journal of Structural Stability and Dynamics,2011,11(6):1201-1228.
[11]李向真,梁萍,向伟明.典型平面非规则隔震结构的平扭耦联反应时程计算与分析[J].工程抗震与加固改造,2005,27(3):26-29.LI Xiangzhen,LIANG Ping,XIANG Weiming.Calculation and analysis on lateral-torsional coupled response of the typical planar asymmetric iso-lated structure[J].Earthquake Resistant Engineering and Retrofitting,2005,27(3):26-29.(in Chinese)
[2]Nagarajaiah S,Narasimhan S.Smart base isolated benchmark building part II:phase I sample controllers for linear isolation system[J].StructuralControl and Health Monitoring,2006,13(2-3):589-604.
[3]Erkus B,Johnson E.Smart base isolated benchmark building part III:a sample controller for bilinear isolation[J].Structural Control and HealthMonitoring,2006,13(2-3):605-625.
[4]Narasimhan S,Nagarajaiah S,Johnson E A.Smart base isolated benchmark building part IV:phase II Sample controller for nonlinear isolation sys-tems[J].Structural Control and Health Monitoring,2008,15:657-672.
[5]Narasimhan S,Nagarajaiah S.Key Findings from the nonlinear base-isolated benchmark[C].19th Analysis and Computation Specialty Confer-ence,2010:295-304.
[6]Li Hui,Ou Jinping.A design approach for semi-active and smart base-isolated buildings[J].Structural Control and Health Monitoring,2006,13(2-3),660-681.
[7]Du Yongfeng,Wang Jiajia,Li Hui.A study on sequential optimal control algorithm for smart base isolated benchmark building[C].The Second In-ternational Conference on Dynamics,Vibration and Control,Beijing,2006.
[8]李向真,王铁成,雷丽.平面非规则隔震结构性能参数对地震反应的影响[J].地震工程与工程振动,2006,26(6):196-199.LI Xiangzhen,WANG Tiecheng,LEI Li.Influence of performance parameters of isolated irregular structures on earthquake responses[J].Journalof Earthquake Engineering and Engineering Vibration,2006,26(6):196-199.(in Chinese)
[9]王建强,杜兴量,丁永刚.隔震层(偏心)对基础滑移隔震结构平-扭耦联地震反应的影[J].振动与冲击,2010,29(4):22-26.WANG Jianqiang,DU Xingliang,DING Yonggang.Lateral-torsional coupled seismic response of a sliding base-isolated structure with an eccentricin isolation layer[J].Vibration and Shock,2010,29(4):22-26.(in Chinese)
[10]Sharma A,Jangid R S.Influence of high initial isolator of stiffness on the seismic response of a base-isolated benchmark building[J].Internation-al Journal of Structural Stability and Dynamics,2011,11(6):1201-1228.
[11]李向真,梁萍,向伟明.典型平面非规则隔震结构的平扭耦联反应时程计算与分析[J].工程抗震与加固改造,2005,27(3):26-29.LI Xiangzhen,LIANG Ping,XIANG Weiming.Calculation and analysis on lateral-torsional coupled response of the typical planar asymmetric iso-lated structure[J].Earthquake Resistant Engineering and Retrofitting,2005,27(3):26-29.(in Chinese)
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