桥梁结构的动力特性对进行桥梁的动力性能设计、健康检测和维护具有十分重要的意义，而三塔双跨悬索桥具有和传统的大跨径悬桥不完全相同的静、动力性能。针对泰州大桥工程实例，通过ANSYS有限元分析软件研究了三塔双跨悬索桥在成桥阶段和施工阶段的动力特性，并与传统的悬索桥作比较，得出了一些有意义的结论，供工程设计人员参考。

The dynamic behaviors have critical influences on the design of structure dynamics, health monitoring and maintenances. The three- pylon two-span suspension bridge does have different static and dynamic behaviors comparing with traditional one-span suspension bridge. This paper analyzes the dynamic behavior of Taizhou Bridge under construction stage and operation stage based on ANSYS. Some meaningful results have been obtained and can provide references for engineers in the further.