Investigation of Thermal Stress of Continuous Welded Rail on High Speed Railway Bridge

경부고속철도 교량상 장대레일의 온도응력 계측 실험

  • 강재윤 (한국건설기술연구원 구조시스템연구실) ;
  • 최은석 (한국건설기술연구원 구조시스템연구실) ;
  • 진원종 (한국건설기술연구원 구조시스템연구실) ;
  • 이정우 (한국건설기술연구원 구조시스템연구실) ;
  • 곽종원 (한국건설기술연구원 구조시스템연구실) ;
  • 김병석 (한국건설기술연구원 구조시스템연구실)
  • Published : 2007.11.08


Recently, the continuous welded rail(CWR) track has been used for less maintenance of the High-speed railway tracks. In case of CWR track, track buckling has always been an unpredictable event under the high compressive stress in rail. The behavior and stress state of CWR track is manily influenced by its thermal variations, and it is important to understand seasonal variations of rail temperature and stress to predict the track stability. This paper describes the in-site measurement for the rail temperature and rail stress, and the correlation between the rail temperature and stress was examined.