自锚式悬索桥动力特性及减震效果
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摘要
采用时程分析法针对自锚式悬索桥的动力特性进行了试验和理论分析,并分析了非线性黏滞阻尼器对该桥型抗震能力的影响.结果表明,采用梁杆单元建立的悬索桥计算模型可有效地进行结构的地震响应分析,具有良好的可靠性.在主桥纵向设置参数合理的非线性黏滞阻尼器可有效地减小结构在地震作用下控制部位的相对位移,不同程度地改善了结构墩柱部位的地震反应效应,黏滞阻尼器耗能减振效果良好.
The dynamic characteristics of self-anchored suspension bridges is experimented and analyzed using the way of non-linear dynamic time history.And based on it,the effect of non-linear viscous damper on the shock-resistant capability of this bridge is studied.The results indicated that the calculated model of suspended bridge built by beam and bar elements can be used to the seismic responsive analysis of structure,whose result is reliable.When the non-linear viscous dampers with proper parameters are installed along the lengthwise direction of main bridge,the control regional relative displacement of structure is reduced effectively.The seismic response effect of vital positions is improved to some extent.Meanwhile,these confirm that the viscous damper has good dissipation energy and damped effect too.
The dynamic characteristics of self-anchored suspension bridges is experimented and analyzed using the way of non-linear dynamic time history.And based on it,the effect of non-linear viscous damper on the shock-resistant capability of this bridge is studied.The results indicated that the calculated model of suspended bridge built by beam and bar elements can be used to the seismic responsive analysis of structure,whose result is reliable.When the non-linear viscous dampers with proper parameters are installed along the lengthwise direction of main bridge,the control regional relative displacement of structure is reduced effectively.The seismic response effect of vital positions is improved to some extent.Meanwhile,these confirm that the viscous damper has good dissipation energy and damped effect too.
引文
[1]范立础．桥梁抗震[M]．上海：同济大学出版社，1997．
[2]李福志，胡思继．城市快速轨道交通路网规划的相关问题[J]．交通运输工程学报，2001，1(1)：39-42．LI Fu-zhi,HU Si-ji.Some issues about traffic network planning of urban rapid mass tran [J].Journal of Traffic and Transportation Engineering,2001,1(1):39-42.(in Chinese)
[3]邵旭东，邓军，李立峰．自锚式悬索桥主缆锚固结构研究[J]．土木工程学报，2006，39(7)：81-87．SHAO Xu-dong,DENG Jun,LI Li-feng.Cable anchorage structure of self-anchored suspension bridge[J].China Civil Engineering Journal,2006,39(7):81-87.(in Chinese)
[4]胡世德，苏虹，王君杰．钢管混凝土拱桥的三维弹塑性地震反应理论分析[J]．中国公路学报，2004，17(1)：57-61．HU Shi-de,SU Hong,WANG Jun-jie.Three dimensional elasto-plastic seismic response analysis of CFST bridge[J].China Journal of Highway and Transport,2004,17(1):57-61.(in Chinese)
[5]王志强，胡世德，范立础．东海大桥黏滞阻尼器参数研究[J]．中国公路学报，2005，18(3)：37-42．WANG Zhi-qiang,HU Shi-de,FAN Li-chu.Research on viscous damper parameters of Donghai Bridge[J].China Journal of Highway and Transport,2005,18 (3):37-42.(in Chinese)
[6]PRIESTLEYMJ N,SEIBLE F,CALVI G M.Seismic design and retrofit of bridges[M].New York:John Wiley and Sons, 1996.
[7]XU Xiu-li,LIU Wei-qing,WANG Ren-gui.A study of vibration reduction structural system of long-span cable-stayed bridges[C]//Proceedings of the 3rd International Conference on Earthquake Engineering.Nanjing:China Water Power Press,2004:529-534.
[8]于泳波，万振江，刘健新．减震技术在公路桥梁中的应用及地震反应分析[J]．长安大学学报(自然科学版)，2004，24 (2):58-60. YU Yong-bo,WAN Zhen-jiang,LU Jian-xin.Seismic reduction design for highway bridge and seismic response[J].Journal of Chang'an University,2004,24(2):58-60.(in Chinese)
[2]李福志，胡思继．城市快速轨道交通路网规划的相关问题[J]．交通运输工程学报，2001，1(1)：39-42．LI Fu-zhi,HU Si-ji.Some issues about traffic network planning of urban rapid mass tran [J].Journal of Traffic and Transportation Engineering,2001,1(1):39-42.(in Chinese)
[3]邵旭东，邓军，李立峰．自锚式悬索桥主缆锚固结构研究[J]．土木工程学报，2006，39(7)：81-87．SHAO Xu-dong,DENG Jun,LI Li-feng.Cable anchorage structure of self-anchored suspension bridge[J].China Civil Engineering Journal,2006,39(7):81-87.(in Chinese)
[4]胡世德，苏虹，王君杰．钢管混凝土拱桥的三维弹塑性地震反应理论分析[J]．中国公路学报，2004，17(1)：57-61．HU Shi-de,SU Hong,WANG Jun-jie.Three dimensional elasto-plastic seismic response analysis of CFST bridge[J].China Journal of Highway and Transport,2004,17(1):57-61.(in Chinese)
[5]王志强，胡世德，范立础．东海大桥黏滞阻尼器参数研究[J]．中国公路学报，2005，18(3)：37-42．WANG Zhi-qiang,HU Shi-de,FAN Li-chu.Research on viscous damper parameters of Donghai Bridge[J].China Journal of Highway and Transport,2005,18 (3):37-42.(in Chinese)
[6]PRIESTLEYMJ N,SEIBLE F,CALVI G M.Seismic design and retrofit of bridges[M].New York:John Wiley and Sons, 1996.
[7]XU Xiu-li,LIU Wei-qing,WANG Ren-gui.A study of vibration reduction structural system of long-span cable-stayed bridges[C]//Proceedings of the 3rd International Conference on Earthquake Engineering.Nanjing:China Water Power Press,2004:529-534.
[8]于泳波，万振江，刘健新．减震技术在公路桥梁中的应用及地震反应分析[J]．长安大学学报(自然科学版)，2004，24 (2):58-60. YU Yong-bo,WAN Zhen-jiang,LU Jian-xin.Seismic reduction design for highway bridge and seismic response[J].Journal of Chang'an University,2004,24(2):58-60.(in Chinese)
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