The Journal of the Convergence on Culture Technology (문화기술의 융합)

The International Promotion Agency of Culture Technology (국제문화기술진흥원)
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An Experimental Study on Causes Evaluation of Rail Corrugation for Concrete track(STEDEF) in Urban Transit

도시철도 콘크리트궤도(STEDEF)의 레일파상마모 발생원인 분석을 위한 실험적 연구

  • 최정열 (동양대학교 철도건설안전공학과) ;
  • 공형식 (서울교통공사 궤도2사업소) ;
  • 김준형 ((주)모든텍 철도인프라연구소) ;
  • 김학선 (서울교통공사 토목2사업소) ;
  • 정지승 (동양대학교 철도건설안전공학과)
  • Received : 2018.09.22
  • Accepted : 2018.10.28
  • Published : 2018.11.30
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Abstract

The purpose of this study is to investigate the cause of rail corrugation and the track force for concrete track (STEDEF) in the urban transit. From the field measurements, the dynamic wheel load, vertical displacement of sleeper and rail bending stress were measured and it was evaluated by regarding to the rail corrugation. As a result of the study, the causes of rail corrugation was experimentally proved by frequency analysis using measured dynamic wheel load data. The influence of corrugation on dynamic wheel load, rail bending stress and sleeper displacement was evaluated that the periodic irregularities of rail corrugation on the rail surface amplified the dynamic track force such as the dynamic wheel load, and thus the rail bending stress and the vertical displacement of sleeper could be increased by a maximum of 1.7 times.

본 연구에서는 도시철도 콘크리트 궤도(STEDEF)구조에 발생된 레일파상마모의 발생원인과 이에 따른 궤도부 담력의 수준을 분석하고자 실 운행열차를 대상으로 현장측정을 수행하여 동적 윤중, 레일저부휨응력 및 침목변위를 측정하였다. 동적 윤중 측정데이터를 이용한 주파수 분석을 통해 측정구간에 발생된 파상마모의 발생원인을 실험적으로 입증하였으며, 파상마모가 동적 윤중, 레일휨응력 및 침목변위 증가에 미치는 영향을 분석하였다. 연구결과, 레일 표면에 발생된 주기적인 요철형상의 파상마모는 동적 윤중을 증폭시키고 이에 따라 레일 휨응력 및 침목변위를 최대 1.7배 이사 크게 증가시킬 수 있는 것으로 분석되었다.

Keywords

GJMGCK_2018_v4n4_413_f0001.png 이미지

그림 1. 방진상자형 침목플로팅궤도의 파상마모 전경 Figure 1. Photographs of corrugation of booted track

GJMGCK_2018_v4n4_413_f0002.png 이미지

그림 2. 측정구간 센서 설치전경 Figure 2. Photographs of sensors instrumentation

GJMGCK_2018_v4n4_413_f0003.png 이미지

그림 3. 동적 윤중 측정결과 Figure 3. Measured results of dynamic wheel load

GJMGCK_2018_v4n4_413_f0004.png 이미지

그림 4. 파상마모 유무에 따른 주파수 분석결과 Figure 4. Frequency analysis results according to corrugation

GJMGCK_2018_v4n4_413_f0005.png 이미지

그림 5. 동적 레일저부응력 측정결과 Figure 5. Measured results of dynamic rail bending stress

GJMGCK_2018_v4n4_413_f0006.png 이미지

그림 6. 동적 침목 수직변위 측정결과 Figure 6. Measured results of dynamic vertical displacement of sleeper

References

  1. K.Y. Ha, H.S. Kim. "A Study of Rail Wear by Change of Acceleration and Deceleration", Journal of the Korean Society for Railway, 10(5), pp. 607-612, 2007
  2. S.C. Yang, S.Y. Jang, "Investigation of the Maintenance Criteria for the Rail Surface Defects in High-Speed Railways", Journal of the Korean Society for Railway, 14(6), pp. 535-544, 2011 https://doi.org/10.7782/JKSR.2011.14.6.535
  3. M.C. Kim, W.H. You, "Rail Corrugation Effects on the Dynamic Behavior of Clips of Rail Fastening System in Operation Enviornment of Urban Railway", Journal of the Korean Society for Railway, 19(4), pp. 489-497, 2016 https://doi.org/10.7782/JKSR.2016.19.4.489
  4. S.L. Grassie, "Rail Corrugation: Charactereristics, Cause and Treatments", Proceeding IMechE Part F: Journal of Rail and Rapid Transit, 223, pp. 1-17, 2009 https://doi.org/10.1243/09544097JRRT212
  5. P.A. Meehan, W.J.T. Daniel, T. Campey, "Prediction of the Growth of Wear-Type Rail Corrugation", Wear, 258, pp. 1001-1013, 2005 https://doi.org/10.1016/j.wear.2004.03.049
  6. C. Collettea, P. Vanhonacker, R. Bastaits, D. Levy, "Comparison between Time and Frequency Studies of a Corrugated Curve of RER Paris Network", Wear, 265, pp. 1249-1258, 2008 https://doi.org/10.1016/j.wear.2008.01.030
  7. I. Gomez, E.G. Vadillo, "A Linear Model to Explain Short Pitch Corrugation on Rails", Wear, 255, pp. 1127-1142, 2003 https://doi.org/10.1016/S0043-1648(03)00282-5
  8. J.I. Egana, J. Vinolas, M. Seco, "Investigation of the Influence of Rail Pad Stiffness on Rail Corrugation on a Transit System", Wear, 261, pp. 216-224, 2006 https://doi.org/10.1016/j.wear.2005.10.004
  9. J.Y. Choi, "Qualitative Analysis for Dynamic Behavior of Railway Ballasted track", Ph.D dissertation, Technical University of Berlin, 2014
  10. J.Y. Choi, P.S. Kim, J.S. Chung, "A Study on Optimum Spacing of Rail Joint for Personal Rapid Transit(PRT) Track System," The Journal of the Convergence on Culture Technology(JCCT), Vol. 4, No. 3, p.213-220, August 31, 2018 https://doi.org/10.17703/JCCT.2018.4.3.213