高速铁路468 m斜拉桥车桥时变系统振动分析

该文根据车桥时变系统振动分析理论,并依据势能驻值原理及形成结构矩阵的"对号入座法则",导出了系统的空间振动矩阵方程。计算了高速列车以不同车速通过该大跨度钢混结合梁斜拉桥的空间振动响应,检算了该桥的横向和竖向刚度,并进行了列车走行安全性与乘客舒适性分析,所得结果可供设计参考。

Vibrancy Analysis on Axle Time-varying System of Express Railway 468-m Cable-stayed Bridge

Based on the vibrancy analysis theory of axle time-varying system and the principle of stationary potential energy and the principle of"set in the right"forming the structural matrix,it is to educe the space vibrancy matrix equation of the system.It is to calculate the space vibrancy response of the express train to pass this long-span steel and concrete combined beam cable-stayed bridge in the different speeds,and check the crosswise and vertical rigidities of this bridge.The article analyzes the running safety of the train and the comfort of the passengers.The result can be referred for the design.