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Vertical dynamic response of the ballastless track on long-span plate-truss cable-stayed bridges

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  • Special Topic: High-speed Railway Infrastructure (II)
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Abstract

An analytical model is presented to study vertical dynamic response of the ballastless track on long-span plate-truss cable-stayed bridges based on an explicit dynamic analysis method. In the model, the train, ballastless track and bridge are treated as a coupled vibration system with interaction. By simulating the dynamic process of the system, this paper discusses the distribution law of dynamic responses of the bridge deck and the bed slab. It shows the necessity of a base plate for the ballastless track on the long-span plate-truss cable-stayed bridge. Comparison of the influence of different train speeds and stiffness of the elastic vibration-damping pad on the dynamic responses of the bridge deck and the bed slab is also made. The reasonable stiffness value of elastic vibration-damping pad is proposed.

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Authors and Affiliations

  1. Department of Bridge Engineering, Southwest Jiaotong University, Chengdu, 610031, China

    YongLe Li, Yang Su & FeiLong Xia

  2. Department of Bridge Engineering, Northern Jiaotong University, Beijing, 100044, China

    Nan Zhang

  3. MOE Key Laboratory of High Speed Railway Engineering, Southwest Jiaotong University, Chengdu, 610031, China

    YongLe Li

Authors
  1. YongLe Li
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  2. Yang Su
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  3. FeiLong Xia
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  4. Nan Zhang
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Correspondence to YongLe Li.

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Li, Y., Su, Y., Xia, F. et al. Vertical dynamic response of the ballastless track on long-span plate-truss cable-stayed bridges. Sci. China Technol. Sci. 58, 236–247 (2015). https://doi.org/10.1007/s11431-014-5750-7

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  • DOI: https://doi.org/10.1007/s11431-014-5750-7

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