期刊论文

中文

中国铁道科学

1001-4632

2023

44

04

28-39

10.3969/j.issn.1001-4632.2023.04.03

51978672:国家自然科学基金 2021zzts0230:中南大学研究生自主探索创新项目 HNTY2021K09:湖南铁院土木工程检测有限公司开放课题

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针对线路未来扩能要求，以朔黄双线重载铁路路基为研究对象，建立轨枕-路基-地基三维有限元模型，模拟分析列车轴重、行车速度和运行模式对路基动应力分布规律的影响，并采用塑性安定极限动应力方法对不同工况下的路基动力稳定性开展适应性评价。结果表明：不同运行模式下，列车于本侧轨道下方路基面引起的动应力沿横向呈“马鞍形”分布，且满载列车运行时会在空载侧路基面引起小幅动应力；荷载作用区内动应力随深度增加逐渐减小，而在荷载作用区域外动应力随深度增加先增后减，满载线钢轨下方动应力传递至基床层底部时衰减量超过70%；满载线钢轨下方路基面动应力随列车轴重和行车速度的增加而线...

Taking the heavy-haul railway subgrade of Shuo-Huang double-line as the research object and considering the future requirements for railway capacity expansion,a three-dimensional finite element model of sleeper-subgrade-foundation was established to conduct a simulation...MORE Taking the heavy-haul railway subgrade of Shuo-Huang double-line as the research object and considering the future requirements for railway capacity expansion,a three-dimensional finite element model of sleeper-subgrade-foundation was established to conduct a simulation analysis of the influence of the train axle load,tr...