铁路大跨度钢管砼提篮拱桥车桥耦合振动分析

文章运用桥梁结构动力学与车辆动力学的研究方法,建立列车与桥梁的耦合振动模型和时变系统空间振动方程,对主跨380m的钢管混凝土提篮拱桥进行了车桥耦合振动分析,并对桥梁横、竖向位移,车辆脱轨系数、轮重减载率和Sperling指标进行了分析和评价,结果均满足我国相关规定要求,为桥梁设计提供参考。

An Analysis on the Vehicle-bridge Coupling Vibration of Large Span Concrete Filled Tube X-type Arch Bridge on Railway

By using the study method of bridge structure dynamics and vehicle dynamics,the Paper established a train-bridge coupling vibration model and a train-bridge spatial vibration equation of time-varying system,so as to analyze the train-bridge coupling vibration of concrete filled tube X-type arch bridge with a main span of 380m.On the other hand,it also analyzed and evaluated the transverse and vertical displacement of bridge,wheel derailment coefficient,wheel unloading rate and Sperling index.The evaluation result shows that all the indexes can meet the requirement of Chinese stipulations.It provides reference for bridge design.