摘要
路桥过渡段由于受到高速运行车辆动荷载的作用 ,在桥头处往往会出现震动较大的跳车现象 ,影响行车的平稳性与安全性 ,并且随着行车速度、轴重的提高以及快速列车和重载列车的开行而增加 .针对高速铁路路桥过渡段变形的机制进行分析 ,建立了车辆通过过渡段时的计算模型 ,并提出了相应的防治措施 。
The jump frequently occurs and obviously at the head of bridge subgrade transition because of the impact of the high speed running vehicles. These phenomena affect the railway’s hunting stability and security, and it becomes more serious with the riding speed and the axes weight increased and the running of high speed or heavy loading train. Based on the analysis of bridge subgrade transition deformation mechanism, the dynamic mathematics model has been developed and prevention measure put forward which provides scientific basis for decision making in the prevention of jump phenomena in the running vehicles and the construction of the bridge subgrade transition.
出处
《青岛建筑工程学院学报》
2004年第2期40-43,共4页
Journal of Qingdao Institute of Architecture and Engineering
关键词
过渡段
变形机制
防治措施
high speed railway, bridge subgrade transition, dynamic model, deformation mechanism, prevention measures
