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首页> 外文会议>4th International Conference on Structural Dynamics Vol.1, Sep 2-5, 2002, Munich, Germany >An integrated vehicle-track-ground model for investigating the dynamic response of railway tracks due to high-speed trains
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An integrated vehicle-track-ground model for investigating the dynamic response of railway tracks due to high-speed trains

机译：一个用于研究高速列车对铁路轨道的动力响应的综合车辆轨道-地面模型

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Mathematical models to "simulate the generation and propagation of railway vehicle-track-ground vibrations are presented. The emphasis is laid on the vertical train-track interaction and the dynamic effect of track irregularities. An existing computer program named DIFF is enhanced by taking account of the ground subsystem so that dynamic responses of the whole vehicle-track-ground system can be calculated. The numerical procedures adopted are based on the semi-discrete finite element method, by which the spatial domain is discretized using finite elements and then a solution technique combining modal superposition with time integration for the first-order system of state-space equations is applied in the time domain. Simulations of an X-2000 bogie running on a common Swedish track rested on normal as well as soft subsoil are carried out. It is shown that considering vehicle, track and ground as an integrated system is important in investigating the high-speed train induced track-ground vibrations and wave propagation.
机译：提出了“模拟铁路车辆-轨道-地面振动的产生和传播的数学模型。重点是火车-轨道之间的垂直相互作用和轨道不平顺的动态影响。考虑到现有的名为DIFF的计算机程序，其功能得到了增强。通过半离散有限元方法，采用有限元离散化空间域，然后求解。在时域中，将模态叠加与时间积分相结合的第一阶段状态空间方程组技术应用于时域，对在普通和软土上的瑞典共同轨道上运行的X-2000转向架进行了仿真。结果表明，将车辆，轨道和地面作为一个集成系统对于研究高速列车引起的轨道地面非常重要。 d振动和波传播。

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