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A Guideline for Development of Track-Bridge Structural System with Sliding Layer to Reduce the Track-Bridge Interaction

궤도-교량 상호작용 저감을 위한 슬라이드 층이 고려된 궤도-교량 구조시스템의 개발 방향

  • Yun, Kyung-Min (Department of Civil Engineering, Chungnam National University) ;
  • Choi, Shin-Hyung (Department of Civil Engineering, Chungnam National University) ;
  • Song, Dae-Seok (Construction management division, Korea Rail Network Authority) ;
  • Lee, Kyung-Chan (High-Speed Railroad Systems Research Center, Korea Railroad Research Institute) ;
  • Lim, Nam-Hyoung (Department of Civil Engineering, Chungnam National University)
  • Received : 2014.12.30
  • Accepted : 2015.02.12
  • Published : 2015.02.28

Abstract

The bridges take a significant part of entire route in Korea railway, because 70% of Korean territory is covered with mountains. For this reason, span enlargement of railway bridges is more advantageous to increase economic efficiency on the bridge design. However there are many limitations such as additional axial force of the rail, excessive displacement due to track-bridge interaction. In this study, track-bridge interaction analysis was conducted considering the sliding layer which was installed between the track and girder. From the numerical analysis results, the behavior of track-bridge interaction was investigated according to the installation method of sliding layer. Finally, a guideline for development of track-bridge structure system to reduce the track-bridge interaction was proposed.

산지가 전국토의 70%를 차지하는 국내 지형의 특성으로 인하여, 철도선로 전체 노선의 상당부분을 교량구간이 차지한다. 이에 따라 교량 설계 시 경제성 증가를 위하여 경간장을 늘리는 것이 유리하지만 궤도-교량 상호작용에 의한 레일의 부가축응력, 변위 등의 문제로 인한 제약이 발생한다. 본 연구에서는 궤도와 교량 상판 사이에 설치되는 슬라이딩 층을 고려한 궤도-교량 상호작용 해석을 수행하였다. 수치해석 결과를 통해 슬라이딩층 설치 방법에 따른 상호작용 거동을 분석하였으며, 궤도-교량 상호작용이 저감된 새로운 궤도-교량 구조시스템의 개발방향을 제안하였다.

Keywords

References

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