Buckling Probability Evaluation Framework of CWR Tracks

장대레일 궤도의 좌굴확률평가 시스템

  • 배현웅 (충남대학교, 토목공학과) ;
  • 한승룡 (고려대학교, 건축사회환경공학과) ;
  • 최진유 (한국철도기술연구원, 차륜궤도연구실) ;
  • 임남형 (충남대학교, 토목공학과)
  • Published : 2010.06.10

Abstract

The buckling behavior of CWR tracks is affected by the various parameters such as stiffness and geometry of track panel, ballast resistance, rail temperature, initial imperfection, and wheel load. Until now, CWR tracks were managed by the dichotomous logic (deterministic approach) despite these influence factors are having the nature of random variables. So, the design method and existing management process to prevent the track buckling can be very non-economic since the value of these influence factors to calculate the track buckling strength are selected by considering the worst track condition. In this study, buckling probability evaluation process is proposed which is based on the reliability index, AFOSM method, and limit state equation.

Keywords