粘滞阻尼器参数对大跨度桥梁抗震性能影响研究
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摘要
基于流体粘滞阻尼器的力学特性,以荆岳长江大桥为工程背景,研究了附加非线性粘滞阻尼器对大跨度桥梁抗震性能的影响。利用动力非线性时程分析方法,对非线性粘滞阻尼器的阻尼系数和阻尼指数进行了参数敏感性分析,讨论了阻尼器布置位置对减震效果的影响,并与不设阻尼器情况的地震响应结果进行了比较。分析表明:通过在适当的位置设置纵向粘滞阻尼器,可以有效地降低结构在地震作用下关键部位的位移,改善结构构件的地震力;减震效果取决于阻尼器参数;同时,设置阻尼器避免了相邻主梁可能发生碰撞引起的结构损坏。
Based on the mechanical characteristics of fluid viscous damper,the anti-seismic performance of the long-span bridge with non-linear viscous dampers was investigated.Taking Jingyue Yangtze River Bridge for example,the sensitivity analysis on damping coefficient C and damping exponent of viscous damper was performed using non-linear dynamic time-history method,and the effect of seismic response control on viscous dampers placed in different positions was discussed.It indicates that(1) setting dampers in longitudinal direction of bridge can reduce the displacement of key positions and the seismic response of the bridge significantly;(2) vibration-suppressing effectiveness depends on damper parameters;(3)the local damage of components due to the potential collision caused by neighboring members of bridge can be eliminated.
Based on the mechanical characteristics of fluid viscous damper,the anti-seismic performance of the long-span bridge with non-linear viscous dampers was investigated.Taking Jingyue Yangtze River Bridge for example,the sensitivity analysis on damping coefficient C and damping exponent of viscous damper was performed using non-linear dynamic time-history method,and the effect of seismic response control on viscous dampers placed in different positions was discussed.It indicates that(1) setting dampers in longitudinal direction of bridge can reduce the displacement of key positions and the seismic response of the bridge significantly;(2) vibration-suppressing effectiveness depends on damper parameters;(3)the local damage of components due to the potential collision caused by neighboring members of bridge can be eliminated.
引文
[1]VADER T,MCDANIEL C C.Influence of Dampers on SeismicResponse of Cable-Supported Bridge Towers[J].Journal ofBridge Engineering,ASCE,2007,12(3):373-379.
[2]MCDANIEL C C,SEIBLE F.Influence of Inelastic TowerLinks on Cable-Supported Bridge Response[J].Journal ofBridge Engineering,ASCE,2005,10(3):272-280.
[3]王浩,李爱群,郭彤.超大跨悬索桥地震响应的综合最优控制研究[J].湖南大学学报:自然科学版,2006,33(3):6-10.WANG Hao,LI Aiqun,GUO Tong.Compositive Optimal Controlof the Seismic Response for Super-long-span Suspension Bridges[J].Journal of Hunan University:Natural Science,2006,33(3):6-10.
[4]吴斌暄,王磊,王歧峰.使用非线性粘滞阻尼器的桥梁在地震反应中的响应分析[J].公路交通科技,2007,24(10):76-80.WU Binxuan,WANG Lei,WANG Qifeng.A Method of Seis-mic Response Analysis for Bridge with Nonlinear ViscousDamper[J].Journal of Highway and Transportation Researchand Development,2007,24(10):76-80.
[5]叶爱君,范立础.附加阻尼器对超大跨度斜拉桥的减震效果[J].同济大学学报:自然科学版,2006,34(7):859-863.YE Aijun,FAN Lichu.Seismic Response Reduction of a Super-long-span Cable-stayed Bridge by Adding Dampers[J].Jou-rnal of Tongji University:Natural Science Edition,2006,34(7):859-863.
[6]王志强,胡世德,范立础.东海大桥粘滞阻尼器参数研究[J].中国公路学报,2005,18(3):37-42.WANG Zhiqiang,HU Shide,FAN Lichu.Rsearch on ViscousDamper Parameters of Donghai Bridge[J].China Journal ofHighway and Transport,2005,18(3):37-42.
[7]叶爱君,胡世德,范立础.超大跨度斜拉桥的地震位移控制[J].土木工程学报,2004,37(12):38-43.YE Aijun,HU Shide,FAN Lichu.Seismic Displacement Con-trol for Super-long Span Cable-stayed Bridges[J].China CivilEngineering Journal,2004,37(12):38-43.
[8]徐秀丽,刘伟庆,李龙安,等.斜拉桥结构减震设计优化研究[J].地震工程与工程振动,2006,26(2):119-124.XU Xiuli,LIU Weiqing,LI Long’an,et al.OptimizedEarthquake Reduction Design of Cable-stayed Bridges[J].Earthquake Engineering and Engineering Vibration,2006,26(2):119-124.
[9]范立础.桥梁抗震[M].上海:同济大学出版社,1997.FAN Lichu.Seismic Analysis of Bridge[M].Shanghai:TongjiUniversity Press,1997.
[10]SEIM C.The Seismic Retrofit of the Golden Gate Bridge[C]//PRC-US Workshop on Seismic Analysis and Design of SpecialBridges.Shanghai:2002.
[2]MCDANIEL C C,SEIBLE F.Influence of Inelastic TowerLinks on Cable-Supported Bridge Response[J].Journal ofBridge Engineering,ASCE,2005,10(3):272-280.
[3]王浩,李爱群,郭彤.超大跨悬索桥地震响应的综合最优控制研究[J].湖南大学学报:自然科学版,2006,33(3):6-10.WANG Hao,LI Aiqun,GUO Tong.Compositive Optimal Controlof the Seismic Response for Super-long-span Suspension Bridges[J].Journal of Hunan University:Natural Science,2006,33(3):6-10.
[4]吴斌暄,王磊,王歧峰.使用非线性粘滞阻尼器的桥梁在地震反应中的响应分析[J].公路交通科技,2007,24(10):76-80.WU Binxuan,WANG Lei,WANG Qifeng.A Method of Seis-mic Response Analysis for Bridge with Nonlinear ViscousDamper[J].Journal of Highway and Transportation Researchand Development,2007,24(10):76-80.
[5]叶爱君,范立础.附加阻尼器对超大跨度斜拉桥的减震效果[J].同济大学学报:自然科学版,2006,34(7):859-863.YE Aijun,FAN Lichu.Seismic Response Reduction of a Super-long-span Cable-stayed Bridge by Adding Dampers[J].Jou-rnal of Tongji University:Natural Science Edition,2006,34(7):859-863.
[6]王志强,胡世德,范立础.东海大桥粘滞阻尼器参数研究[J].中国公路学报,2005,18(3):37-42.WANG Zhiqiang,HU Shide,FAN Lichu.Rsearch on ViscousDamper Parameters of Donghai Bridge[J].China Journal ofHighway and Transport,2005,18(3):37-42.
[7]叶爱君,胡世德,范立础.超大跨度斜拉桥的地震位移控制[J].土木工程学报,2004,37(12):38-43.YE Aijun,HU Shide,FAN Lichu.Seismic Displacement Con-trol for Super-long Span Cable-stayed Bridges[J].China CivilEngineering Journal,2004,37(12):38-43.
[8]徐秀丽,刘伟庆,李龙安,等.斜拉桥结构减震设计优化研究[J].地震工程与工程振动,2006,26(2):119-124.XU Xiuli,LIU Weiqing,LI Long’an,et al.OptimizedEarthquake Reduction Design of Cable-stayed Bridges[J].Earthquake Engineering and Engineering Vibration,2006,26(2):119-124.
[9]范立础.桥梁抗震[M].上海:同济大学出版社,1997.FAN Lichu.Seismic Analysis of Bridge[M].Shanghai:TongjiUniversity Press,1997.
[10]SEIM C.The Seismic Retrofit of the Golden Gate Bridge[C]//PRC-US Workshop on Seismic Analysis and Design of SpecialBridges.Shanghai:2002.
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