A Study on the Train Speed Restriction to Prevent Track Buckling in the Hot Summer

혹서기 좌굴사고 방지를 위한 합리적인 열차속도 규제에 관한 연구

  • 배현웅 (충남대학교, 토목공학과) ;
  • 최진유 (한국철도기술연구원, 기술기획부) ;
  • 김명수 (코레일, 부산경남본부 시설처) ;
  • 이진옥 (충남대학교, 토목공학과) ;
  • 임남형 (충남대학교, 토목공학과)
  • Published : 2011.10.20

Abstract

Recently, the rise of the rail temperature is accelerating further due to the global warming, and the track stability(buckling) problem result from the axial force in the continuous welded rail(CWR) have become the most important issue. This track stability threatens the security of running trains in the hot summer. In order to prevent the track buckling in the hot summer and ensure the safety of the running train, as a part of the safety control plan for KORAIL high-speed railway, the train speed restriction according to the rail temperature was introduced in 2004. However, the conceptual and theoretical background of train-speed restriction is uncertain. In this paper, the theoretical study about the reasonable train-speed restriction is performed. For this purpose, the risk-based probabilistic stability evaluation of the track buckling is applied.

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Acknowledgement

Supported by : 한국연구재단