摘要
列车制动时在钢轨中产生的纵向力将直接影响到无缝线路的稳定性。采用有限单元法和解释法从理论上对列车制动时在钢轨中引起的纵向力与道床阻力之间的关系进行了探讨，并用算例对这一问题进行了分析，得出较大的道床纵向阻力可减小列车制动时引起的钢轨纵向位移和纵向力的结论。
The longitUdinal forces in rail caused by train braking will affect the stability of continuous welded Rail direcdy. In this paper, the relationship between die longitudinal force in rail caused h)' train braking and the ballast resistance is studied with finite element and continuous function method, and some examples are used to analyze this problem. The result shows that the gnat ballast longitUdinal resistance can reduce the longitudinal displacement and force in rail caused by tile train braking.
基金
铁道部科技发展基金!J98Z227
关键词
道床阻力
钢轨纵向力
列车
制动
稳定性
track, ballast resistance, train braking, longitudinal force in rail
