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.
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.
出处
《兰州交通大学学报》
CAS
2008年第1期35-37,45,共4页
Journal of Lanzhou Jiaotong University
基金
国家自然科学基金资助项目(50678076)
甘肃省自然科学基金项目(0710RJZA050)
关键词
小半径曲线
无缝线路
横向位移
动载效应
有限元方法
minor radius curve
continuous welded rail
lateral displacement
dynamic effect
finite element method
