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.
其作用是将钢轨固定在轨枕上，保持轨距和阻止钢轨相对于轨枕的纵横向移动。
Its function is fixes the rail on the railroad tie, maintains the gauge and the impediment rail is opposite in the railroad tie vertically and horizontally to the migration.
因此本文针对城市轨道交通的特点，着重对高架桥上整体道床的钢轨支承间距进行研究，计算分析了不同轨枕间距对轨道结构力学特性的影响。
In this paper, aiming at the characteristics of urban track traffic, research has been done mainly on support spacing of rail on integrated ballast bed of viaduct.
钢轨作为轨道结构的基本组成部分，具有承受车轮的巨大压力并将其传递到轨枕上，同时引导机车车辆车轮前进的功能。
As an essential component of track structure, the function of rail is to withstand the enormous pressure of the wheel, and pass it to the sleepers. It also guided train wheels move forward.
本文将铁路轨道看作由钢轨和轨枕组成的双层弹性系统，用两个偏微分方程联立描述其振动。
In this paper the railway track is considered as a double elastic system of both rails and sleepers and the vibration is described in detail with two partial differential equations.
从计算结果可知，轨道结构的横向振动频率较低，且钢轨与轨枕的横向振动主频相接近。
From the calculating results, the main frequency of rail and sleeper lateral vibration is low.
为此，扣件必须具有足够的强度，耐久性，和一定的弹性，并有效第保持钢轨与轨枕之间的可靠联结。
Therefore, buckles to have the enough intensity, the durability, with certain elasticity, and effective maintains between the rail and the railroad tie reliable joint.
在ANSYS中建立了轨道有限元模型，整个轨道的结构包括钢轨、扣件、轨枕、道碴。
The finite element model of the track is established in ANSYS. It includes the rail, the pad, the sleeper, and the ballast.
道床刚度时轨道的横向振动影响较大，从理论上分析了钢轨和轨枕的动力响应与轨道横向刚度之间的关系。
The lateral stiffness of ballast affects the lateral vibration greatly. This paper analyses theoretically the dynamic response of rail and sleeper vibration under different stiffness.
以往对钢轨、轨枕及梁跨结构三者之间产生相对位移的计算模型，没有考虑轨枕位移的影响。
The rail, sleeper and beam have distinct relative displacement. In the former mechanics model, the influence of the displacement of the sleeper is not taken into account.
铺轨时，“U”形弯环的环部被砸弯，压住钢轨的底脚，即可将轨枕与钢轨联结在一起。
During rail laying, the loop part of the U-shaped bent loop is knocked bent to hold down the foot of the rail and in this way, the sleeper and the rail are connected together.
铺轨时，“U”形弯环的环部被砸弯，压住钢轨的底脚，即可将轨枕与钢轨联结在一起。
During rail laying, the loop part of the U-shaped bent loop is knocked bent to hold down the foot of the rail and in this way, the sleeper and the rail are connected together.
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