拉索减震支座及桥梁抗震设计应用研究
|
摘要
首先对近三十年来国内外使用较广泛的减隔震装置进行了评述,并在此基础上介绍了一种新型减隔震支座——拉索减震支座(通过在盆式支座上增设限位拉索而成)及其设计要点,并通过支座的拟静力试验测定了不同竖向力工况下支座滞回曲线以及不锈钢板与聚四氟乙烯滑板之间的摩擦系数等。最后通过建立一座四跨连续组合箱梁桥有限元模型,并考虑不同场地条件的影响,对拉索减震支座的减震效果进行了分析。计算结果表明,拉索减震支座能有效减小桥梁结构地震响应,且对不同场地条件具有很好的适应性。
Aseismic devices that are widely used in recent thirty years were evaluated firstly,then a new class of aseismic bearing,cable-sliding friction aseismic bearing(CSFAB),and its design characteristics were introduced,which combines ordinary pot rubber bearings with elastic cable devices located between the upper deck and the lower piers.The hysteretic behaviors and the friction coefficient between stainless steel plate and PTEE plate under different vertical loads were tested.Finally,a finite element model of four-span continuous composite box-girder bridge was established to analyze the seismic behavior of the bridge taking into account different site conditions.The results show that CSFAB can decrease the seismic responses of bridges in different site conditions.
Aseismic devices that are widely used in recent thirty years were evaluated firstly,then a new class of aseismic bearing,cable-sliding friction aseismic bearing(CSFAB),and its design characteristics were introduced,which combines ordinary pot rubber bearings with elastic cable devices located between the upper deck and the lower piers.The hysteretic behaviors and the friction coefficient between stainless steel plate and PTEE plate under different vertical loads were tested.Finally,a finite element model of four-span continuous composite box-girder bridge was established to analyze the seismic behavior of the bridge taking into account different site conditions.The results show that CSFAB can decrease the seismic responses of bridges in different site conditions.
引文
[1]Alaa M Sharabash,Bassem O Andrawes.Application of shape memory alloy dampers in the seismic control of cable-stayed bridges[J].Engineering Structures,2009,31(2):607―616.
[2]叶爱君.桥梁抗震[M].北京:人民交通出版社,2002.Ye Aijun.Seismic design of bridge[M].Beijing:China Communication Press,2002.(in Chinese)
[3]袁万城,范立础.桥梁新型减震橡胶支座减震耗能性能研究[J].振动与冲击,1995,14(3):53―56.Yuan Wancheng,Fan Lichu.Study on energy absorption of a new aseismic rubber bearing for bridge[J].Journal of Vibration and Shock,1995,14(3):53―56.(in Chinese)
[4]郭磊,李建中,范立础.大跨度连续梁桥减隔震设计研究[J].土木工程学报,2006,39(3):81―85.Guo Lei,Li Jianzhong,Fan Lichu.Research on seismic isolation design for long-span continuous bridges[J].China Civil Engineering Journal,2006,39(3):81―85.(in Chinese)
[5]彭天波,李建中,范立础.双曲面球型减隔震支座的开发及应用[J].同济大学学报,2007,35(2):176―180.Peng Tianbo,Li Jianzhong,Fan Lichu.Development and application of double spherical aseismic bearing[J].Journal of Tongji University,2007,35(2):176―180.(in Chinese)
[6]王元清,陈慧婷.大吨位压剪盆式橡胶支座及其连接的原型试验研究[J].土木工程学报,2009,42(2):80―85.Wang Yuanqing,Chen Huiting.Experiments on large-tonnage compression-shear pot-type elastomeric pad bearings and connections[J].China Civil Engineering Journal,2009,42(2):80―85.(in Chinese)
[7]杨彦飞,王喜堂,陈文春.桥梁支座及其恢复力模型[J].广州建筑,2008,36(6):11―15.Yang Yanfei,Wang Xitang,Chen Wenchun.Bridge bearings and restoring force model[J].Guangzhou Architecture,2008,36(6):11―15.(in Chinese)
[8]王宏谋.桥梁盆式橡胶支座的研究与应用[D].成都:西南交通大学,2008.Wang Hongmou.Research and application of pot rubber bearing[D].Chengdu:Southwest Jiaotong University,2008.(in Chinese)
[9]曹新建.大型桥梁的抗震能力设计策略[D].上海:同济大学,2009.Cao Xinjian.Design strategy on aseismic capacity of large bridge[D].Shanghai:Tongji University,2009.(in Chinese)
[10]闫冬,戚春香,冯清海.SAP2000结构工程分析及实例详解[M].北京:中国建筑工业出版社,2009.Yan Dong,Qi Chunxiang,Feng Qinghai.SAP2000 structural engineering analysis and examples explanation[M].Beijing:China Architecture&Building Press,2009.(in Chinese)
[2]叶爱君.桥梁抗震[M].北京:人民交通出版社,2002.Ye Aijun.Seismic design of bridge[M].Beijing:China Communication Press,2002.(in Chinese)
[3]袁万城,范立础.桥梁新型减震橡胶支座减震耗能性能研究[J].振动与冲击,1995,14(3):53―56.Yuan Wancheng,Fan Lichu.Study on energy absorption of a new aseismic rubber bearing for bridge[J].Journal of Vibration and Shock,1995,14(3):53―56.(in Chinese)
[4]郭磊,李建中,范立础.大跨度连续梁桥减隔震设计研究[J].土木工程学报,2006,39(3):81―85.Guo Lei,Li Jianzhong,Fan Lichu.Research on seismic isolation design for long-span continuous bridges[J].China Civil Engineering Journal,2006,39(3):81―85.(in Chinese)
[5]彭天波,李建中,范立础.双曲面球型减隔震支座的开发及应用[J].同济大学学报,2007,35(2):176―180.Peng Tianbo,Li Jianzhong,Fan Lichu.Development and application of double spherical aseismic bearing[J].Journal of Tongji University,2007,35(2):176―180.(in Chinese)
[6]王元清,陈慧婷.大吨位压剪盆式橡胶支座及其连接的原型试验研究[J].土木工程学报,2009,42(2):80―85.Wang Yuanqing,Chen Huiting.Experiments on large-tonnage compression-shear pot-type elastomeric pad bearings and connections[J].China Civil Engineering Journal,2009,42(2):80―85.(in Chinese)
[7]杨彦飞,王喜堂,陈文春.桥梁支座及其恢复力模型[J].广州建筑,2008,36(6):11―15.Yang Yanfei,Wang Xitang,Chen Wenchun.Bridge bearings and restoring force model[J].Guangzhou Architecture,2008,36(6):11―15.(in Chinese)
[8]王宏谋.桥梁盆式橡胶支座的研究与应用[D].成都:西南交通大学,2008.Wang Hongmou.Research and application of pot rubber bearing[D].Chengdu:Southwest Jiaotong University,2008.(in Chinese)
[9]曹新建.大型桥梁的抗震能力设计策略[D].上海:同济大学,2009.Cao Xinjian.Design strategy on aseismic capacity of large bridge[D].Shanghai:Tongji University,2009.(in Chinese)
[10]闫冬,戚春香,冯清海.SAP2000结构工程分析及实例详解[M].北京:中国建筑工业出版社,2009.Yan Dong,Qi Chunxiang,Feng Qinghai.SAP2000 structural engineering analysis and examples explanation[M].Beijing:China Architecture&Building Press,2009.(in Chinese)
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心