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.
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。
2
The force of lateral friction is utilized instead, with the rider having to wiggle and twist their body to generate movement.