摘要
分析了钢轨的扭转变形以及扭转变形引起的钢轨水平位移；推导了钢轨扭转角的计算公式，并计算了几组不同荷载作用下的轨顶水平位移。计算结果表明，钢轨顶面横向位移较大。在分析计算钢轨水平位移时，必须考虑扭转变形。
The paper analyses the twist deformation of rail and the lateral displacement of rail caused by it. The formula of twist angle of rail is derived and lateral displacements on the top of rail subjected to the several different loads are calculated by using the formula. The result shows that the lateral displacement on the top of rail is so big that it is necessary to take account of the twist deformation while analysing and calculating the lateral displacement of rail.
关键词
铁路
钢轨
水平位移
扭转变形
trackways(railway), steel rail, twist, horizontal displacement
