中文摘要：

推导了小半径无缝线路轨道在温度力和列车动力共同作用下的单元方程,用有限元方法分析了温度力及列车动荷载对小半径无缝线路轨道横向位移的影响.提出了控制小半径轨道横向位移的加固措施,对各种计算工况条件下的小半径无缝线路轨道横向位移计算结果进行了对比分析.提出了动力效应系数的概念用来分析列车动荷载对小半径无缝线路轨道横向位移的影响程度.

英文摘要：

For the continuous welded curve rail with minor radius, the element equation under the temperature force and dynamic load of the train was developed, which was used to analyze the dynamic effects on the lateral displacement of continuous welded curve rail with minor radius. In the procedure, a reinforcement measure of controlling the track lateral displacement was proposed,and the computing results under different kinds of design condition were contrastively analyzed, A concept of dynamic effect coefficient was suggested to analyze the influence of train dynamic load on the lateral displacement of continuous welded curve rail with minor radius.