大跨钢管混凝土桁架拱桥的地震反应分析
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摘要
以巫峡长江大桥为研究背景,通过建立空间结构有限元模型,计算和分析该大桥的动力特性,并运用时程分析法分析该桥的地震反应,采用EI-centro波进行计算,讨论横桥向和竖桥向地震动对地震反应的影响和规律,为大跨度钢管混凝土拱桥的抗震设计和研究提供了理论依据。
Taking the Wu Gorge Bridge over Yangtse River as study background,the dynamic characteristics for large span concrete filled steel tube arch bridge are calculated and analyzed by using 3D finit element model.In addition,the seismic response of this bridge is analyzed by means of EI-centro seismic record with time history method.The effects of vertical seismic wave and horizontal seismic wave have been discussed.This study provides theoretic basis for seismic design and study of large span arch bridge of concrete filled steel tube.
Taking the Wu Gorge Bridge over Yangtse River as study background,the dynamic characteristics for large span concrete filled steel tube arch bridge are calculated and analyzed by using 3D finit element model.In addition,the seismic response of this bridge is analyzed by means of EI-centro seismic record with time history method.The effects of vertical seismic wave and horizontal seismic wave have been discussed.This study provides theoretic basis for seismic design and study of large span arch bridge of concrete filled steel tube.
引文
[1]陈宝春．钢管混凝土拱桥设计与施工[M]．北京：人民交通出版社，2000．
[2]GB50011-2001．建筑抗震设计规范[S]．
[3]JTJ004-89．公路工程抗震设计规范[S]．
[4]李国豪主编．桥梁结构稳定与振动[M]．北京：中国铁道出版社，2003．
[2]GB50011-2001．建筑抗震设计规范[S]．
[3]JTJ004-89．公路工程抗震设计规范[S]．
[4]李国豪主编．桥梁结构稳定与振动[M]．北京：中国铁道出版社，2003．
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