Fatigue Life Evaluation for Railway Turnout Crossing using the Field Test

현장측정을 통한 분기기 망간 크로싱의 피로수명 평가

  • 엄주환 (한국철도기술연구원, 기존철도기술개발사업단) ;
  • 최정열 ((주)대한콘설탄트 철도부) ;
  • 박용걸 (서울산업대학교 철도전문대학원 철도건설공학과)
  • Published : 2006.04.01

Abstract

The major objective of this study is to investigate the fatigue life evaluation of immovability crossing for railway turnout by the field test. In railway engineering, an appliance is necessary to allow a vehicle to move from one track to another. This appliance came to be known technically as turnout. So, turnout is required very complex railway technologies such as rolling stock, track. Due to the plan under the application of high speed train, turnout are needed more stable far fatigue behaviors. It analyzed the mechanical behaviors of turnout crossing with propose its advanced technical type on the field test and fatigue evaluation far the dynamic fatigue characteristics. As a result, the advanced type crossing are obviously effective for the fatigue damage ratio and dynamic response which is non-modified type. The analytical and experimental study are carried out to investigate the passing path of contact surface and fatigue damage trend decrease dynamic stresses and deflections on advanced crossing type, And the advanced type reduce dynamic fatigue damage ratio and increase fatigue life(about each 38%) more than non-modified type. From the field test results of the servicing turnout crossing, it is evaluated that the modification of contact angle, weight, material and sectional properties is very effective fur ensure against fatigue risks.

References

  1. 정우진,양신추,강윤석,'새로운 레일규격 제정을 위한 기초검토', 추계학술대회 논문집, 한국철도학휘, pp.467-474, 2001
  2. Coenraad Esveld, 'Modern Railway Track', MRT-Productions, 2001
  3. 한국철도기술연구원, '노스가동분기기 조정', 한국철도기술연구원, 2001
  4. 서사범, '선로공학', 삶과꿈, 1999
  5. 이종득, '철도공학', 노해출판사, 1993
  6. 한국철도기술연구원, '분기기 성능개선을 통한 기존선 속도향상방안 연구', 한국철도기술연구원, 2003. 7
  7. 김기환, 박춘수, 정경렬, 'Wheel/Rail 접촉점의 Parameter에 관한 연구', 춘계학술대회 논문집, 대한기계학회, pp.155-160, 1999