Browse > Article

Evaluation of Rail Fatigue Life by Grinding of Kyeong-Bu High-Speed Line  

Kim, Man-Cheol (한국철도기술연구원 차륜궤도연구실)
Choi, Eun-Soo (홍익대학교 토목공학과)
Publication Information
Journal of the Korean Society for Railway / v.13, no.6, 2010 , pp. 577-582 More about this Journal
Abstract
The importance of maintenance of rail surface defects is increasing according to the KTX operation. That is because during high speed operation of rolling stocks, rail surface defects shorten fatigue life of rail, accelerate track degradation and deteriorate ride comfort. Rail grinding has been applied for effective rail maintenance in Kyeong-Bu HS line. This paper evaluates the effectiveness of rail grinding in term of rail fatigue life. To this end, the stresses of the rail are measured under KTX running and the equivalent stress range is calculated by RMC after the frequency analysis done with rainflow counting method. Also, The Modified Miner's rule is applied to predict the fatigue life of ground rail. The result of the analysis shows that the fatigue life of ground rail is increased by 15%.
Keywords
Rail grinding; Fatigue life of rail; Rain-flow counting method; Modified Miner's rule;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 D.Y. Sung, D.C. Go, Y.S. Kang, Y.G. Park (2009) The Parametric Study Effecting on the Fatigue Life of Rail on High Speed Railway, Journal of the Korean Society for Railway, 12(3), pp. 394-404   과학기술학회마을
2 Y.G. Park, D.Y. Sung, H.K. Park, S.Y. Kong (2008) Bending Fatigue Life Assessment of Aged CWR Using the Field Test, Journal of the Korean Society for Railway, 11(3), pp. 317-325.   과학기술학회마을
3 S.J. Maddox (1991) Fatigue Strength of Welded Structures, Abington Publishing.
4 Makoto Ishida, Noritsugi Abe (1990) Relationship between Rail Surface Irregularity and Bending Fatigue of Welded Part in Long Rails, RTRI Report, 4(7), pp. 8-15.
5 M.C. Kim (2006) Study on Establishing Rail Grinding Period, KRRI Report, pp. 59-79.
6 CEN (2003) EN13231-3 Part3 : Acceptance of rail grinding, milling and planning work in track.
7 Coenraad Esveld (2001) Modern Railway Track, MRT-Productions, pp. 84-90.
8 M.C. Kim, J.S. Kim, S.C. Han (2001) Prediction of Bending Fatigue Life to Welding Parts of Rail on Slab Track, Journal of the Korean Society for Railway, 4(4), pp. 138-146.
9 S.C. Yang, M.C. Kim, J.S. Kim (2000) Prediction of Bending Fatigue Lifes of Rail Welded Parts, Journal of the Korean Society of Civil Engineers, 20(1-D), pp. 97-105.