车-桥耦合系统迭代解法研究

Iterative Procedure for Dynamic Analysis of Vehicle-Bridge Interaction

在已有车桥耦合研究的基础上,推导了车桥耦合系统的迭代解法。建立了车桥系统模型,利用ANSYS软件分析单自由度质弹系统车辆模型在通过简支梁桥时桥梁的动力响应。用无量纲参数分析了在车桥相互作用下,桥梁的位移响应与常力过桥时桥梁位移响应之间的差异。计算结果表明,迭代解法可方便求解车辆桥梁相互作用下,车桥耦合系统的动力响应,其计算结果与相关文献结果较为一致。

From the historical viewpoint the problem of moving load is reviewed in this paper.A general and efficient iterative procedure is proposed for the resolution of the dynamic interaction problem in a vehicle-bridge system,which is simplified as a free beam and a single DOF spring-mass car model running at a prescribed speed.The resolution is easily performed with the help of the commercial program ANSYS.The normalized displacement responses of the bridge to the simple vehicle model are presented.And the reasons for the variation of bridge responses with and without interaction effect are analyzed as well.It is proved that the algorithm put forward in this paper is valid enough to evaluate the dynamic interaction of vehicle-bridge system.