대한토목학회논문집 (KSCE Journal of Civil and Environmental Engineering Research)

  • 제35권5호
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  • Pages.1191-1198
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  • 2015
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  • 1015-6348(pISSN)
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  • 2799-9629(eISSN)
대한토목학회 (Korean Society of Civil Engeneers)
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레일연마를 고려한 장대레일의 피로수명 평가

The Fatigue Life Evaluation of CWR based on the Rail Grinding

  • 공선용 (서울과학기술대학교 철도전문대학원) ;
  • 성덕룡 (대원대학교 철도건설과) ;
  • 박용걸 (서울과학기술대학교 철도전문대학원)
  • 투고 : 2015.06.02
  • 심사 : 2015.09.02
  • 발행 : 2015.10.01
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초록

본 연구에서는 국내 일반철도 새마을호 동력차 및 궤도조건을 고려한 차량/궤도 상호작용해석을 수행하였다. 레일표면요철에 따른 레일휨응력을 분석하였고, 레일 휨응력예측식을 도출하였다. 또한, 일반철도 레일강의 S-N선도를 이용한 피로해석을 수행하였다. 파괴확률에 따른 레일피로수명을 산정하였고, 레일연마에 따른 레일표면요철 제거 및 레일휨응력 저감효과를 고려한 레일피로수명 평가를 수행하였다. 따라서, 국내 일반철도에서 레일연마 시행방법에 따른 레일피로수명을 평가하여 제시하였다.

In this study, vehicle/track interaction analysis by the Saemaul powered vehicle was carried out. The prediction equation for the bending stress of rail was estimated using the rail bending stress by the rail surface irregularities at welds. Also, the fatigue analysis using a S-N curve of welds in the conventional railway was carried out. We estimated the fatigue life of CWR by the fracture probability. By the rail grinding, the fatigue life of CWR was evaluated in consideration to reduce the rail bending stress through removing the rail surface irregularities. Therefore, it presented the fatigue life of CWR according to the rail grinding execution plan in the conventional railway.

키워드

참고문헌

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피인용 문헌

  1. Fatigue life evaluation of continuous welded rails on concrete slab track in Korea high-speed railway vol.21, pp.13, 2018, https://doi.org/10.1177/1369433218762501