连续刚构桥施工阶段地震响应分析研究
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摘要
为研究不同地震作用对大跨连续刚构桥建造过程中不同施工阶段的响应,结合新颁布的公路桥梁抗震设计细则,以南宁仙葫大桥为例建有限元模型,采用反应谱法及动态时程分析方法,输入不同烈度的地震作用,对采用悬臂法施工的不同施工阶段的地震响应进行分析对比,结果表明连续刚构桥建造过程中悬臂端位移、主梁根部弯矩及桥墩底部弯矩变化较大,研究结果可以对大跨度连续刚构桥的动力特性以及地震反应特性有更深入的了解。
In order to study the influences of different earthquakes on long-span continuous rigid frame bridge construction in different construction stages,combining the newly published Aseismatic Design Details of Highways and Bridges,as the example of Xianhu Bridge in Nanning city,finite element model has been built.By response spectrum method and dynamic time-history analysis method,and suffered from different seismic intensities,the seismic responds in different construction stages by cantilever construction method are analyzed and compared.The results show that the cantilevered end displacements,bending moment in main beam root and pier bottom have great change during the construction.The results have a greater understanding of long-span continuous rigid frame of the dynamic characteristics and seismic response.
引文
[1]马保林.高墩大跨度连续刚构桥[M].北京:人民交通出版社,2002.
    [2]GB5011—2001,建筑抗震设计规范[S].
    [3]JTJ 004—89,公路工程抗震设计规范[S].
    [4]JTG/T B02-01—2008,公路桥梁抗震设计细则[S].
    [5]唐咸远,邓志恒.连续刚构桥施工技术控制[J].四川建筑,2008(10):188-191.
    [6]谢旭.桥梁结构地震响应分析与抗震设计[M].北京:人民交通出版社,2006.
    [7]夏志华.大跨度连续刚构桥地震反应分析[D].成都:西南交通大学硕士论文,2003.
    [8]刘建新,张伟,张茜.洛特大桥抗震性能计算[J].交通运输工程学报.2006(3):57-61.

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