摘要针对宜万铁路万州长江大桥的工程设计实例,采用大型有限元分析软件AN SY S,选取空间BEAM 4单元建立动力计算模型,对比研究了无车和有车满载工况下的动力特性,采用反应谱法和时程分析法对该桥的线性地震反应进行了分析,讨论了2种工况下结构地震反应的最大值及其规律,在时程分析法中,采用中震和大震人工波,得出了主梁、主拱的内力和位移分布规律及时程反应。
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