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Study of the Behavior of Concrete Slab Track on Earthwork According to the Variation of Train Axle Load and Speed

열차하중, 속도변화에 따른 토공상 콘크리트 슬래브궤도의 거동특성연구

  • Chun, Hee-Kwang (Graduate School of Railway, Seoul National University of Science & Technology) ;
  • Kang, Yun-Suk (High-Speed Railroad Infrastructure System Research Team, KRRI) ;
  • Park, Yong-Gul (Graduate School of Railway, Seoul National University of Science & Technology)
  • 전희광 (서울과학기술대학교 철도전문대학원) ;
  • 강윤석 (한국철도기술연구원 고속철도 인프라시스템 연구단) ;
  • 박용걸 (서울과학기술대학교 철도전문대학원)
  • Received : 2015.08.27
  • Accepted : 2015.10.08
  • Published : 2015.10.31

Abstract

In recent high speed rail way, the operating speed of train is enhanced and the introduction of EMU train vehicles is increased. In addition, as expected the demand of the concrete slab track and the trend of design cross-section reduction, the clear behavior of evaluation of internal slab layer is demanded about the variation of design load and speed. The purpose of this study is to evaluate and identify the mechanical behavior pattern of concrete slab track and track-road bed with the variation of axle load and train speed. To this end, the behavior of TCL and HSB was evaluated in according to the variation of axle load and speed. And the analysis results and the data measured TCL strain sensor, which was embedded in TCL slab under installation on Honam high speed railway, was analyzed. The analysis result shows that the strain are increasing in according to the speed-up of train, and line regression was obtained from measured data. Analysis data of the state of bonding condition of slab layer and measured data was analyzed. It is conducted that the TCL layer stress of HEMU 430X, which of axle load, is lighter was similar to the stress of KTX-Honam, the standard deviation of measured stress is dramatically increased.

Acknowledgement

Grant : 고속선 증속을 고려한 설계기준 및 성능평가 핵심연구

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