23 t轴重货车条件下铁路路桥过渡段动力性能分析

Dynamic Performance Analysis of Railway Subgrade-Bridge Transition Section Under Condition of 23 t Axle Load Freight Train

对锦赤(锦州—赤峰)铁路朝阳北至锦州段铁路路桥过渡段进行23 t轴重货车条件下实车运行测试,分析货物试验列车以不同速度通过时路桥过渡段的受力、变形以及振动特性,评价23 t轴重货车条件下铁路路桥过渡段动力性能的工程适应性和设计合理性,为其养护维修提供基础数据。测试结果表明:该路桥过渡段的各项动力性能参数均满足相关规范的限值要求,其动力性能满足货物列车以80 km/h运行时的安全性要求。

The actual vehicle operation test was carried out for the subgrade-bridge transition section of Jinzhou-Chifeng Railway from Chaoyang North to Jinzhou Section under the condition of 23 t axle load freight train.The stress,deformation and vibration characteristics of the subgrade-bridge transition section were analyzed when the freight test train passed through at different speeds.The engineering adaptability and design rationality of the dynamic performance of the subgradebridge transition section under the condition of 23 t axle load freight train were evaluated,which can provide basic data for its maintenance.The test results show that the dynamic performance parameters of the subgrade-bridge transition section meet the limit requirements of the relevant specifications.And the dynamic performance of the subgrade-bridge transition section meets the safety requirements of freight trains operating at 80 km/h.