中文摘要：

将磁浮车辆，桥上轨道梁及下部桥梁视为整体大系统，建立磁浮车辆-轨道梁-桥梁动力耦合模型，并应用Fortran语言进行程序设计，利用其进行计算机仿真，研究在不同幅值、不同波数和不同波长的正弦不平顺作用下的系统振动响应规律。

英文摘要：

The track of Shanghai maglev railway lays viaduct structure in most sections along the route, but in such areas as valley, great river, etc. , where viaduct structure cannot span across, the guideways specific for the bridge may be required. In this paper, a coupling dynamics system is established and the corresponding dynamics simulation programs are compiled base on the above model. There are a lot of factors influencing the dynamic responses of this system. Guideway irregularity is one of the factors that make the increase of car body vibration, bridge and guideway deformation, bridge and guideway vibration, magnet-guideway interaction force and air gap change. Using the simulation program above, the dynamic responses of the system are analyzed under sine irregularity with different amplitude, different wave number and different wave length.