影响铁路桥梁行车安全的因素——桥墩横向刚度问题的研究

Influencing Factors of Running Safety on Railway Bridge ——Study on Lateral Pier Stiffness

随着我国既有线路的大规模提速 ,桥梁墩台横向刚度的合理限值问题日益突出 ,严重影响了行车安全 ,也给新建铁路桥梁设计提出了难题。笔者从问题的产生、车辆计算模型、桥梁计算模型、激励源等几个方面回顾了桥墩横向刚度问题的研究现状 ,指出了存在的问题 ,最后给出了目前的研究进展。

With the speeding up of train on current line in China, the problem of lateral pier stiffness of railway bridge becomes more and more important. The state-of-the-art of vehicle-beam-pier system is reviewed from the view of the problem raised, the vehicle calculation model, the bridge calculation model, and the excitation sources; the existed problems are pointed out and the progress in recent research is indicated.