对称与不对称连续刚构桥动力特性对比分析

随着不对称连续刚构桥在桥梁建设中的应用越来越广泛，对比分析对称与不对称连续刚构桥的抗震性能，对设计、研究不对称刚构桥显得极为重要。以乌江二桥为工程背景，在此基础上另虚设5个墩高高差为0~25m的不对称刚构桥型，应用有限元程序Midas／Civil建模，进行模态分析，再应用反应谱分析法，计算了各模型的地震响应，将计算结果进行对比分析，得到了不对称连续刚构桥的一些动力特性，为同类型桥梁的抗震分析提供参考。

Dynamic Performance Contrastive Analysis of Symmetric and Asymmetric Continuous Rigid Frame Bridge

Along with the extensive application of asymmetric continuous rigid frame in bridge construction, the importance of comparative analysis of the characteristics and seismic performance of symmetric and asymmetric continuous rigid frame bridge has great significance for design and study of asymmetric continuous rigid frame. On the basis of Wujiang #2 Bridge model, this paper propose another five hypothetical models whose pier height difference is from 0-25m. Based on Midas/Civil FEM model, the modal analysis and dynamics characteristics of different model have been studied. Furthermore, through response spectrum analysis and comparative study, the unique characteristics of asymmetric continuous rigid frame have been studied and provided reference for future design and analysis of the same type of bridge.