桥梁刚度对桥梁竖向动挠度的影响分析

Analysis of Stiffness Effect on Bridge Vertical Dynamic Deflection

在高速铁路中,桥梁占有很大的比重,移动列车和桥梁之间的动力响应极其复杂,这一问题随着高速铁路的发展受到越来越多的重视。桥梁的竖向动挠度影响着车辆运行的平稳性、乘客的乘坐感受,也影响着桥梁的安全性,利用大型有限元分析软件ANSYS分析铁路桥梁刚度和桥梁竖向动挠度之间的关系,得出了铁路简支梁桥的刚度和竖向动挠度之间的关系。

Bridge occupies a large proportion in the high speed railway, and the dynamic responsebetween bridge and train are extremely complex. The problem has been paid more and more attentionwith the development of high speed railway. Bridge dynamic deflection affects the vertical ride sta-tionary, passenger vehicle operation and the safety of bridge. This paper analyses the relationship be-tween the vertical rigidity and bridge dynamic deflection with the finite element analysis software AN-SYS, and finds out the relationship between railway bridge stiffness and vertical dynamic deflection.