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本文运用有限元法，建立了列车通过时轨道结构振动分析模型。该模型考虑轨道结构竖向和纵向振动效应，计及轨道结构的不平顺影响。模型的动力响应输出量是轮轨竖向接触力、钢轨纵向力、剪力、弯矩、挠度和加速度。作为应用实例，文章对普通列车和重载列车通过时轨道结构进行了振动分析。
In this paper, the finite element method is used to establish the vibration analysis model of track structure when the train passes through. The model takes into account the vertical and longitudinal vibration effects of the orbital structure, taking account of the irregularity of the orbital structure. The dynamic response output of the model is the vertical contact wheel-rail contact force, rail longitudinal force, shear force, bending moment, deflection and acceleration. As an application example, this paper analyzes the vibration of track structure when ordinary train and heavy-haul train pass.