Optimal Vertical Stiffness of Fastener of Concrete Track in High-Speed Railway

고속철도 콘크리트궤도 체결구 최적 수직강성

  • Yang, Sin-Chu (Dept. of High-speed Railroad System Research Center, Korea Railroad Research Institute)
  • Received : 2014.03.02
  • Accepted : 2014.12.26
  • Published : 2015.02.28


In this study, to minimize both the costs associated with track maintenance and the energy consumption for train operation, a numerical method that evaluates the optimal vertical stiffness of a fastener for concrete track is presented. A progress model of the track damage is established in order to calculate the concrete track maintenance cost according to the fastener stiffness. Also, the quantitative relationship between the progress of the track damage and the maintenance of the concrete track is derived. The wheel load is more exactly evaluated by using the advanced vehicle-track interaction model, which can precisely consider the behaviors of the track components. An optimal range for the stiffness of the fastener, a range that is applicable to the design of concrete track for domestic high speed lines, is proposed.


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