地震波参数对基础隔震体系的减震效果影响研究与试验验证
|
摘要
为研究地震波参数对基础隔震体系的动力响应和减震效果影响,选取集集地震中16条地震波作为输入,采用单自由度体系对基础隔震体系进行数值分析,主要分析地震波参数中卓越周期、平均周期、地震动峰值速度与峰值加速度之比和断层距及地震波幅值对其动力响应和减震效果的影响,并进行振动台试验验证。结果表明:地震波参数中卓越周期、平均周期、断层距和地震动峰值速度与峰值加速度之比及地震波幅值对其动力响应和减震效果的影响明显,均具有较强的相关性。同幅值下地震动峰值速度与峰值加速度之比对其减震效果的影响最显著,可以作为评价基础隔震体系的减震效果的主要指标。远场地震波和普通近场地震波下随地震波幅值的增大减震率增大,达到一定的数值后减震率基本稳定,减震效果较好;脉冲型近场地震波作用下其减震效果最差;试验分析结果与数值分析结果基本一致,表明分析结果的合理性和可靠性。
In order to study the influence of seismic wave parameters on dynamic response and seismic mitigation effect of base isolation system, sixteen seismic waves were selected from chichi earthquakes as input and numerical analysis was conducted on the single degree of freedom(SDOF) base isolation system. The chosen influence parameters include the median period, the predominant period, the ratio of peek ground velocity to peek ground acceleration and rupture distance and amplitude of seismic waves. And the analysis results were verified by the shaking table test. The results indicate that the parameters of seismic waves, including the median period,the predominant period, the ratio of peek ground velocity to peek ground acceleration, rupture distance and amplitude of seismic waves, have a great influence on the dynamic response and seismic mitigation effect of base isolation system with strong correlations. The effect of the ratio of peek ground velocity to peek ground acceleration is most obvious under the same amplitude of seismic waves, so it can be determined as a main index to analyze the seismic mitigation effect of base isolation system. The seismic reduction ratio of base isolation system increases with the amplitude of seismic waves under the far fault ground motion and the near fault ground motion,and remains stable at the certain amplitude of seismic waves. Seismic mitigation effect of base isolation system is well. The seismic mitigation effect of base isolation system is worst under the near fault pulse-like ground motion. The numerical analysis results agree well with the experimental results, which proves the reasonability and reliability of the analysis results.
In order to study the influence of seismic wave parameters on dynamic response and seismic mitigation effect of base isolation system, sixteen seismic waves were selected from chichi earthquakes as input and numerical analysis was conducted on the single degree of freedom(SDOF) base isolation system. The chosen influence parameters include the median period, the predominant period, the ratio of peek ground velocity to peek ground acceleration and rupture distance and amplitude of seismic waves. And the analysis results were verified by the shaking table test. The results indicate that the parameters of seismic waves, including the median period,the predominant period, the ratio of peek ground velocity to peek ground acceleration, rupture distance and amplitude of seismic waves, have a great influence on the dynamic response and seismic mitigation effect of base isolation system with strong correlations. The effect of the ratio of peek ground velocity to peek ground acceleration is most obvious under the same amplitude of seismic waves, so it can be determined as a main index to analyze the seismic mitigation effect of base isolation system. The seismic reduction ratio of base isolation system increases with the amplitude of seismic waves under the far fault ground motion and the near fault ground motion,and remains stable at the certain amplitude of seismic waves. Seismic mitigation effect of base isolation system is well. The seismic mitigation effect of base isolation system is worst under the near fault pulse-like ground motion. The numerical analysis results agree well with the experimental results, which proves the reasonability and reliability of the analysis results.
引文
[1]周福霖.工程结构减震控制[M].北京:地震出版社,1997
[2]朱玉华,施卫星,吕西林,等.基础隔震房屋模型振动台对比试验与分析[J].同济大学学报:自然科学版,2001,29(5):505-509(Zhu Yuhua,Shi Weixing,Lv Xilin,et al.Research on shaking table test of base isolated buildings[J].Journal of Tongji University:Natural Science,2001,29(5):505-509(in Chinese))
[3]陆伟东,刘伟庆,吴晓飞,等.昆明新国际机场航站楼A区结构模型振动台试验研究[J].建筑结构学报,2011,32(6):27-33(Lu Weidong,Liu Weiqing,Wu Xiaofei,et al.Shaking table test of terminal a structure of Kunming international airport[J].Journal of Building Structures,2011,32(6):27-33(in Chinese))
[4]胥玉祥,朱玉华,卢文胜.云南省博物馆新馆隔震结构模拟地震振动台试验研究[J].建筑结构学报,2011,32(10):39-47(Xu Yuxiang,Zhu Yuhua,Lu Wensheng.Shaking table model test of New Yunnan Provincial Museum[J].Journal of Building Structures,2011,32(10):39-47(in Chinese))
[5]潘毅,季晨龙,卢立恒,等.地震动频谱特性对基础隔震结构双向地震响应的影响[J].土木工程学报,2013,46(5):50-55(Pan Yi,Ji Chenlong,Lu Liheng,et al.Effects of ground motion characteristics on bilateral seismic responses of base-isolated structures[J].China Civil Engineering Journal,2013,46(5):50-55(in Chinese))
[6]韩淼,段燕玲,孙欢,等.近断层地震动特征参数对基础隔震结构地震响应的影响分析[J].土木工程学报,2013,46(6):8-13(Han Miao,Duan Yanling,Sun Huan,et al.Influence of characteristics parameters of near-fault ground motions on the seismic responses of base-isolated structures[J].China Civil Engineering Journal,2013,46(6):8-13(in Chinese))
[7]韩淼,段燕玲,孙欢.近断层地震对基础隔震结构响应影响的振动台试验研究[J].世界地震工程,2013,29(3):22-27(Han Miao,Duan Yanling,Sun Huan.Shaking table test on influence of near-fault ground motions on seismic responses of base-isolated buildings[J].World Earthquake Engineering,2013,29(3):22-27(in Chinese))
[8]唐承志,张永山,汪大洋,等.近断层地震动作用下隔震结构研究现状(Ⅰ)——地震动特性影响与隔震结构参数优化[J].工程抗震与加固改造,2015,37(4):74-82(Tang Chengzhi,Zhang Yongshan,Wang Dayang,et al.State-of-the-art of base-isolated structures in near-fault excitation(I)-Influence of seismic characteristics and parameter optimization analysis[J].Earthquake Resistant Engineering and Retrofitting,2015,37(4):74-82(in Chinese))
[9]杜东升,王曙光,刘伟庆,等.地震动频谱特性对隔震结构响应及损伤影响研究[J].振动与冲击,2015,34(20):203-208,213(Du Dongsheng,Wang Shuguang,Liu Weiqing,et al.Influences of spectral characteristics of earthquake ground motion on seismic responses and damages of base isolated structures[J].Journal of Vibration and Shock,2015,34(20):203-208,213(in Chinese))
[10]颜桂云,项洪,张铮,等.近场脉冲型强震下基础隔震结构的非线性反应与限位分析[J].建筑结构,2016,46(11):96-101(Yan Guiyun,Xiang Hong,Zhang Zheng,et al.Nonlinear responses of base-isolated structures and limiting deformation of isolation layers under near-field pulse-like strong ground motions[J].Building Structure,2016,46(11):96-101(in Chinese))
[11]李小军,贺秋梅,张慧颖,等.地震动速度脉冲对不同高宽比基础隔震结构抗震性能的影响[J].建筑结构学报,2018,39(1):35-42(Li Xiaojun,He Qiumei,Zhang Huiying,et al.Effects of velocity pulse of ground motion on seismic capacity of base-isolated structures with different height-to-width ratios[J].Journal of Building Structures,2018,39(1):35-42(in Chinese))
[12]吴忠铁,范萍萍,杜永峰,等.铅芯橡胶支座端部水平动力荷载的简化计算分析[J].地震工程与工程振动,2015,35(增):72-77(Wu Zhongtie,Fan Pingping,Du Yongfeng,et al.Simplified calculation of horizontal dynamic force for lead rubber bearing[J].Earthquake Engineering and Engineering Dynamics,2015,35(S):72-77(in Chinese))
[13]GB 50011―2010建筑抗震设计规范[S].北京:中国建筑工业出版社,2010(GB 50011―2010 Code for seismic design of buildings[S].Beijing:China Architecture&Building,2010(in Chinese))
[14]吴忠铁.考虑支座极限变形的串联隔震体系性能分析与振动台试验研究[D].兰州:兰州理工大学,2014(Wu Zhongtie.Performance analysis and shaking table test of series isolation system considering the limit deformation of laminated rubber bearing[D].Lanzhou:Lanzhou University of Technology,2014(in Chinese))
[2]朱玉华,施卫星,吕西林,等.基础隔震房屋模型振动台对比试验与分析[J].同济大学学报:自然科学版,2001,29(5):505-509(Zhu Yuhua,Shi Weixing,Lv Xilin,et al.Research on shaking table test of base isolated buildings[J].Journal of Tongji University:Natural Science,2001,29(5):505-509(in Chinese))
[3]陆伟东,刘伟庆,吴晓飞,等.昆明新国际机场航站楼A区结构模型振动台试验研究[J].建筑结构学报,2011,32(6):27-33(Lu Weidong,Liu Weiqing,Wu Xiaofei,et al.Shaking table test of terminal a structure of Kunming international airport[J].Journal of Building Structures,2011,32(6):27-33(in Chinese))
[4]胥玉祥,朱玉华,卢文胜.云南省博物馆新馆隔震结构模拟地震振动台试验研究[J].建筑结构学报,2011,32(10):39-47(Xu Yuxiang,Zhu Yuhua,Lu Wensheng.Shaking table model test of New Yunnan Provincial Museum[J].Journal of Building Structures,2011,32(10):39-47(in Chinese))
[5]潘毅,季晨龙,卢立恒,等.地震动频谱特性对基础隔震结构双向地震响应的影响[J].土木工程学报,2013,46(5):50-55(Pan Yi,Ji Chenlong,Lu Liheng,et al.Effects of ground motion characteristics on bilateral seismic responses of base-isolated structures[J].China Civil Engineering Journal,2013,46(5):50-55(in Chinese))
[6]韩淼,段燕玲,孙欢,等.近断层地震动特征参数对基础隔震结构地震响应的影响分析[J].土木工程学报,2013,46(6):8-13(Han Miao,Duan Yanling,Sun Huan,et al.Influence of characteristics parameters of near-fault ground motions on the seismic responses of base-isolated structures[J].China Civil Engineering Journal,2013,46(6):8-13(in Chinese))
[7]韩淼,段燕玲,孙欢.近断层地震对基础隔震结构响应影响的振动台试验研究[J].世界地震工程,2013,29(3):22-27(Han Miao,Duan Yanling,Sun Huan.Shaking table test on influence of near-fault ground motions on seismic responses of base-isolated buildings[J].World Earthquake Engineering,2013,29(3):22-27(in Chinese))
[8]唐承志,张永山,汪大洋,等.近断层地震动作用下隔震结构研究现状(Ⅰ)——地震动特性影响与隔震结构参数优化[J].工程抗震与加固改造,2015,37(4):74-82(Tang Chengzhi,Zhang Yongshan,Wang Dayang,et al.State-of-the-art of base-isolated structures in near-fault excitation(I)-Influence of seismic characteristics and parameter optimization analysis[J].Earthquake Resistant Engineering and Retrofitting,2015,37(4):74-82(in Chinese))
[9]杜东升,王曙光,刘伟庆,等.地震动频谱特性对隔震结构响应及损伤影响研究[J].振动与冲击,2015,34(20):203-208,213(Du Dongsheng,Wang Shuguang,Liu Weiqing,et al.Influences of spectral characteristics of earthquake ground motion on seismic responses and damages of base isolated structures[J].Journal of Vibration and Shock,2015,34(20):203-208,213(in Chinese))
[10]颜桂云,项洪,张铮,等.近场脉冲型强震下基础隔震结构的非线性反应与限位分析[J].建筑结构,2016,46(11):96-101(Yan Guiyun,Xiang Hong,Zhang Zheng,et al.Nonlinear responses of base-isolated structures and limiting deformation of isolation layers under near-field pulse-like strong ground motions[J].Building Structure,2016,46(11):96-101(in Chinese))
[11]李小军,贺秋梅,张慧颖,等.地震动速度脉冲对不同高宽比基础隔震结构抗震性能的影响[J].建筑结构学报,2018,39(1):35-42(Li Xiaojun,He Qiumei,Zhang Huiying,et al.Effects of velocity pulse of ground motion on seismic capacity of base-isolated structures with different height-to-width ratios[J].Journal of Building Structures,2018,39(1):35-42(in Chinese))
[12]吴忠铁,范萍萍,杜永峰,等.铅芯橡胶支座端部水平动力荷载的简化计算分析[J].地震工程与工程振动,2015,35(增):72-77(Wu Zhongtie,Fan Pingping,Du Yongfeng,et al.Simplified calculation of horizontal dynamic force for lead rubber bearing[J].Earthquake Engineering and Engineering Dynamics,2015,35(S):72-77(in Chinese))
[13]GB 50011―2010建筑抗震设计规范[S].北京:中国建筑工业出版社,2010(GB 50011―2010 Code for seismic design of buildings[S].Beijing:China Architecture&Building,2010(in Chinese))
[14]吴忠铁.考虑支座极限变形的串联隔震体系性能分析与振动台试验研究[D].兰州:兰州理工大学,2014(Wu Zhongtie.Performance analysis and shaking table test of series isolation system considering the limit deformation of laminated rubber bearing[D].Lanzhou:Lanzhou University of Technology,2014(in Chinese))
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |