Journal of the Korean Society for Railway (한국철도학회논문집)

The Korean Society for Railway (한국철도학회)
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Experimental Study on Characteristics of Deformation for Concrete Track on Railway Bridge Deck End induced by Bridge End Rotation

철도교량 단부 회전에 따른 콘크리트 궤도의 변형특성에 관한 실험적 연구

  • Lim, Jongil (Graduate School of Railway, Seoul National University of Science & Technology) ;
  • Song, Sunok (Graduate School of Railway, Seoul National University of Science & Technology) ;
  • Choi, Jungyoul (Dept. of Track and Railway Operations, Technische Universitat Berlin (TU-Berlin)) ;
  • Park, Yonggul (Graduate School of Railway, Seoul National University of Science & Technology)
  • Received : 2013.03.18
  • Accepted : 2013.05.24
  • Published : 2013.06.30
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Abstract

In this study, by considering the rail fastening support distance and the distance between the bridge and the abutment, the behavior of concrete track installed on a railway bridge end deck and the bridge end rotation were analyzed. In order to analyze the track-bridge interaction, bridge and abutment specimens with concrete track structures were designed and used in laboratory testing. At a constant fastening support distance, an increase in the bridge end rotation caused an increase in the displacement of the rail. Therefore, the displacement of the rail directly affects the rail and clip stress. Further, it is inferred that the results of multiple regression analysis obtained using measured data such as angle of bridge end rotation and fastening support distance can be used to predict the track-bridge interaction forces acting on concrete track installed on railway bridge deck ends.

본 연구에서는 교량 단부의 레일지지점 간격, 교량과 교대사이 거리(유간) 및 교량 단부 회전각을 고려하여 콘크리트 궤도가 부설된 교량 단부 궤도의 거동을 분석하였다. 궤도구조가 고려된 교량 및 교대 시험체를 이용한 실내시험 결과, 동일한 유간(레일지지점 간격)에서 교량 단부 회전각이 증가함에 따라 레일의 변위가 선형적으로 비례하는 것으로 나타났다. 또한 이러한 레일의 변위는 레일 및 체결구의 발생응력에 직접적인 영향을 미치는 것으로 분석되었다. 실험결과를 바탕으로 다중 회귀분석을 수행하여 레일지지점 간격 및 교량의 단부 회전각을 매개변수로 하는 철도교량 단부 궤도의 궤도-교량 상호작용력 예측식을 도출하였다.

Keywords

References

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  1. Evaluation of the Structural Behavior Characteristics and Long Term Durability for Transition Track Systems in Railway Bridge Deck Ends vol.17, pp.4, 2014, https://doi.org/10.7782/JKSR.2014.17.4.260