摘要
研究目的:进一步深入研究无砟轨道的运营安全性,为研究无砟轨道路涵过渡段的动力学特性积累数据资料,铁道部集中组织了遂渝铁路无砟轨道综合实车试验。研究结论:相对重载货物列车而言,动车组具有轴重轻、车辆减振性能好等特点,CA砂浆层承受的动应力较小,对线路的动力作用较不显著。相对行车速度而言,车辆轴重对CA砂浆层动应力的影响较为显著。车辆的轴重和行车速度对过渡段范围动应力沿线路纵向分布规律的影响不大。
Research purposes： This paper studies the operation security of the ballastless track further and accumulates data for researching the dynamics characteristics of the ballastless track subgrade - culvert transition. The MOR organized the comprehensive field test on Suining- Chongqing Railway ballasfless track.
Research conclusions：Since the multiple units has the characteristics of light axle load, good performances of vehicle vibration, the CA mortar dynamic stress of it is relatively smaller than that of the heavy haul freight train, and the dynamic role to the railway of the multiple units is relatively not significant. In comparison, the influence of the axle weight is larger than the speed. The axle weight and speed does not impact on the distribution rule of the transition dynamic stress in the direction of the railway line.
出处
《铁道工程学报》
EI
北大核心
2008年第6期43-47,共5页
Journal of Railway Engineering Society
基金
铁道部科技发展计划项目(2005K004-C(G))
关键词
无砟轨道
路涵过渡段
CA砂浆层
动应力
实车测试
ballastless track
subgrade -culvert transition section
CA mortar
dynamic stress
field test
