基础隔震偏心结构地震反应影响因素分析
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摘要
对基础隔震偏心结构进行了水平双向地震作用下的平-扭耦联地震反应分析,研究了上部结构偏心距、扭转与平动周期比和隔震层偏心距对结构地震反应的影响,分析表明,上部结构的偏心距和周期比对结构2个水平方向的地震反应的影响较小,而对上部结构角部最大层间位移和结构的扭转反应有较大影响;隔震层的偏心距对结构2个水平方向的地震反应有一定影响,对隔震层中隔震支座的最大水平位移和结构的扭转反应有显著影响.
The analysis of lateral-torsional coupled seismic response of base-isolated eccentric structures is carried out.The eccentricities and the uncoupled torsional to lateral period ratios of superstructure,and the eccentricities in isolation layer are taken into account.The eccentricities and period ratios of superstructure have a little effect on the lateral response of the structure,but they have much impact on the maximum inter-floor displacement and the torsional response of the structure.The eccentricities in isolation layer have a greater impact on the maximum displacement of the isolators and the torsional response of the structure than that on the lateral response of the structure.
The analysis of lateral-torsional coupled seismic response of base-isolated eccentric structures is carried out.The eccentricities and the uncoupled torsional to lateral period ratios of superstructure,and the eccentricities in isolation layer are taken into account.The eccentricities and period ratios of superstructure have a little effect on the lateral response of the structure,but they have much impact on the maximum inter-floor displacement and the torsional response of the structure.The eccentricities in isolation layer have a greater impact on the maximum displacement of the isolators and the torsional response of the structure than that on the lateral response of the structure.
引文
[1]江宜城,唐家祥.单轴偏心的单层隔震框架结构地震扭转反应分析[J].世界地震工程,1999,15(4):57-61.JIANG Yi-cheng,TANG Jia-xiang.The torsional response analysis of the base-isolated building[J].World SeismicEngineering,1999,15(4):57-61.(in Chinese)
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[3]李宏男,吴香香.偏心结构扭转地震作用的简化计算公式[J].哈尔滨工业大学学报,2004,36(1):52-54.LI Hong-nan,WU Xiang-xiang.Simplified formulae of torsional seismic actions for base-isolated eccentric structures[J].Journal of Harbin Institute of Technology,2004,36(1):52-54.(in Chinese)
[4]瞿伟廉,陈波.智能基础隔震结构的剪扭耦联地震反应分析[J].武汉理工大学学报,2003,25(8):39-42.QU Wei-lian,CHENBo.Smart isolation control for shear-torsional coupled seismic responses of frame structure[J].Journal ofWuhan University of Technology,2003,25(8):39-42.(in Chinese)
[5]SAMALI B,WU Y M,LI J C.Shake table tests on a mass eccentric model with base isolation[J].Earthquake Engineeringand Structural Dynamics,2003,32:1353-1372.
[6]RYAN K L,CHOPRAAK.Estimation of seismic demands on isolators in asymmetric buildings using non-linear analysis[J].Earthquake Engineering and Structural Dynamics,2004,33:395-418.
[7]TENA-COLUNGA A,GOMEZ-SOBERON L.Torsional response of base-isolated structures due to asymmetries in thesuperstructure[J].Engineering Structures,2002,24:1578-1599.
[8]TENA-COLUNGA A,ESCAMILLA-CRUZ J L.Torsional amplifications in asymmetric base-isolated structures[J].Engineering Structures,2007,29:237-247.
[9]王建强,管品武,姚谦峰.铅芯叠层橡胶支座基础隔震结构双向地震反应分析[J].地震工程与工程振动,2005,25(1):133-137.WANG Jian-qiang,GUAN Pin-wu,YAO Qian-feng.Analysis of bilateral seismic response of base-isolated structures with leadrubber bearings[J].Earthquake Engineering and Engineering Vibration,2005,25(1):133-137.(in Chinese)
[10]王建强.基础隔震结构多维及平-扭耦联地震反应分析[D].西安:西安建筑科技大学土木工程学院,2003.WANG Jian-qiang.Analysis on multi-dimensional and lateral-torsional coupled seismic response of base-isolated structures[D].Xi'an:College of Civil Engineering,Xi'an University of Architecture and Technology,2003.(in Chinese)
[2]吴香香,李宏男.结构偏心对基础隔震结构地震反应的影响[J].地震工程与工程振动,2003,23(1):145-151.WU Xiang-xiang,LI Hong-nan.Effects of structural eccentricity on seismic response of base-isolated structures[J].Earthquake Engineering and Engineering Vibration,2003,23(1):145-151.(in Chinese)
[3]李宏男,吴香香.偏心结构扭转地震作用的简化计算公式[J].哈尔滨工业大学学报,2004,36(1):52-54.LI Hong-nan,WU Xiang-xiang.Simplified formulae of torsional seismic actions for base-isolated eccentric structures[J].Journal of Harbin Institute of Technology,2004,36(1):52-54.(in Chinese)
[4]瞿伟廉,陈波.智能基础隔震结构的剪扭耦联地震反应分析[J].武汉理工大学学报,2003,25(8):39-42.QU Wei-lian,CHENBo.Smart isolation control for shear-torsional coupled seismic responses of frame structure[J].Journal ofWuhan University of Technology,2003,25(8):39-42.(in Chinese)
[5]SAMALI B,WU Y M,LI J C.Shake table tests on a mass eccentric model with base isolation[J].Earthquake Engineeringand Structural Dynamics,2003,32:1353-1372.
[6]RYAN K L,CHOPRAAK.Estimation of seismic demands on isolators in asymmetric buildings using non-linear analysis[J].Earthquake Engineering and Structural Dynamics,2004,33:395-418.
[7]TENA-COLUNGA A,GOMEZ-SOBERON L.Torsional response of base-isolated structures due to asymmetries in thesuperstructure[J].Engineering Structures,2002,24:1578-1599.
[8]TENA-COLUNGA A,ESCAMILLA-CRUZ J L.Torsional amplifications in asymmetric base-isolated structures[J].Engineering Structures,2007,29:237-247.
[9]王建强,管品武,姚谦峰.铅芯叠层橡胶支座基础隔震结构双向地震反应分析[J].地震工程与工程振动,2005,25(1):133-137.WANG Jian-qiang,GUAN Pin-wu,YAO Qian-feng.Analysis of bilateral seismic response of base-isolated structures with leadrubber bearings[J].Earthquake Engineering and Engineering Vibration,2005,25(1):133-137.(in Chinese)
[10]王建强.基础隔震结构多维及平-扭耦联地震反应分析[D].西安:西安建筑科技大学土木工程学院,2003.WANG Jian-qiang.Analysis on multi-dimensional and lateral-torsional coupled seismic response of base-isolated structures[D].Xi'an:College of Civil Engineering,Xi'an University of Architecture and Technology,2003.(in Chinese)
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