当列车从高刚度轨道到低刚度轨道时，钢轨垂直力、钢轨加速度、轨枕加速度是由大逐渐减小，没有突变。
When train runs from the rail of high rigidity to the rail of low rigidity, the rail vertical force, rail acceleration and tie acceleration gradually change from large to small.
铁轨下面的泥土看起来已被浸泡，混凝土轨枕和钢轨已被淹没，照片显示重型机械拖走了枕轨，并压平了铁路床。
Thee ground under the tracks appears to have become waterlogged and the concrete ties and steel track submerged.
将轨枕视为连续弹性基础上的有限长梁，对轨枕进行了受力分析，建立了钢轨轴向力和轨枕变形曲线的关系。
Sleeper is regarded as a finite long beam on continuous elastics base. The relation between rail forces and sleeper displacement is established by analysis of sleeper forces.
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