马水河大桥的车桥耦合振动适应性分析

Analysis of the Adaptability of the Train-Bridge System Coupling Vibration to the Mashui River Bridge

根据宜万铁路墩高108m、跨度(116+116)m双线T构桥的实际工况,建立了车桥耦合振动分析模型,按六种工况分别计算了车桥时变系统空间振动响应结果,结合列车运行安全性与舒适性、平稳性等评价指标,具体确定了铁路桥梁结构在各种状态下的使用可靠性。

With the T-beam bridge of the Yichang-Wanzhou double-line railway as a practical example, whose piers are 108 meters in height and 116＋116 meters in span, a train-bridge system coupling vibration analysis model is established in the paper. The results of the varying vibration-time-response of the train-bridge system in six different circumstances are calculated. With the targets concerning the safe, comfortable and steady operation of the train taken into account, the reliability in the use of railway bridges in various circumstances are specifically determined.