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.

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。

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Quick urban rail transit construction bears a strict relation upon environment.

城市快速轨道建设与环境有密切关系。

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In this thesis, we aim at establishing detailed relation of wheel-track and of bridge-track, on the basis of which, we have coded programs about the train-rail-bridge coupling system.

可见，有必要详细分析轮轨关系和桥轨关系，在此基础上，编制了车-线-桥耦合系统计算程序。

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