레일신축 이음부 유지보수 작업에 대한 침목결속의 영향

The Effect of the Tied Sleeper on the Maintenance Work in the Rail Expansion Joint Zone

  • 배현웅 (충남대학교, 토목공학과) ;
  • 강태구 (코레일, 오송고속철도시설사무소) ;
  • 최진유 (한국철도기술연구원, 기술기획부) ;
  • 정원익 (충남대학교, 토목공학과) ;
  • 임남형 (충남대학교, 토목공학과)
  • 발행 : 2011.10.20

초록

The continuous welded rail(CWR) track without the rail expansion joint has many advantages over the conventional track in a variety of fields including the speed-up and the ride comport. However, due to the excessive axial force in the CWR and the track-bridge interactive behavior, inevitably, the rail expansion joint must be installed at the vulnerable zone such as the bridge end zone, etc. In this rail expansion joint zone, the frequency of the maintenance work to repair the track irregularity is on the rise. This is because that the creep of the sleeper is occurred in the moveable zone of the rail expansion joint. In this study, among the several options for reducing the track irregularity on the rail expansion joint zone, the application and efficiency of the tied sleeper is investigated. Field test construction has been conducted, then the progress of the track irregularity and the frequency of the maintenance work are analyzed before and after the filed test construction.

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