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Evaluation of Train Running Safety During Construction of Temporary Bridge on Existing Railway

기존선에서 가설교량 시공에 따른 열차의 주행안전성 평가

  • 엄기영 (한국철도기술연구원 고속철도 인프라시스템 연구단) ;
  • 배재형 (한국철도기술연구원 고속철도 인프라시스템 연구단) ;
  • 최찬용 (한국철도기술연구원 고속철도 인프라시스템 연구단)
  • Received : 2010.10.07
  • Accepted : 2011.02.24
  • Published : 2011.06.26

Abstract

Installing the temporary bridge after excavating the railway requires installing movable cross beam, but as it doesn't requires isolating the catenary or cutting the rail, it's applicable to double-track with frequent operation. In this study, a displacement meter was placed on temporary bridge to monitor the displacement pattern in curve section (R400) completed using temporary bridge method, and wheel load, lateral pressure and derailment coefficient were measured to evaluate the load imposed on track and the stability in curve section (R400) for quantitative evaluation of training running safety. As a result of the measurement, when trains passing over a temporary bridge, the maximum value of Wheel load and Lateral Force is analyzed as the 51% and 81% of standard level according to foreign country's performance tests, There is no trouble with stability analysis in Wheel load and Lateral Force occurring. Additionally, Wheel load and Lateral Force considered as the safety standard are tested 49% of limiting value regardless of trains, which the norm value quite well, there is no problem with train running.

선로하부를 굴착한 후의 가설교량 설치공법은 이동형 가로보를 갖는 공법으로 시공시 전차선 차단 및 레일절단이 불필요하고 열차운행 횟수가 많은 복선부에서도 적용 가능한 공법이다. 본 논문에서는 공사구간이 곡선부(R400)구간으로 가설교량 공법 시공 후의 변위특성을 검토하기 위해 변위계를 설치하고 열차 통과 시의 윤중 횡압을 계측하여 곡선부(R400)의 주행안전성 검토를 평가하였다. 측정결과 가설교량을 통과시 열차종별 윤중과 횡압의 최대값은 각각 국외 궤도성능평가 기준의 51%, 81% 수준으로 분석되어 윤중, 횡압 발생에 따른 궤도 안전성 측면에서는 큰 문제가 없을 것으로 판단된다. 또한 주행안전성의 평가기준이 되는 최대 탈선계수와 최대 윤중감소율은 열차종별에 관계없이 허용한계치의 49% 수준으로 그 기준치에는 못 미치는 것으로 나타나 열차 통과시의 주행안전성 확보에는 큰 문제가 없는 것을 알 수 있었다.

Keywords

References

  1. Y.G. Park, J.Y. Choi, D.Y. Sung, D.S. Chun (2007) Characteristics of Curved Track Behaviors according to Traveling Tilting Train, Journal of the Korean Society for Railway, 10(6), pp. 692-700.
  2. K.Y. Eum (2010) Push in cross beam Moving with Temporary bridge method, Korea Railroad Research Institute.
  3. K.Y. Eum, S.S. Kim, Y.H. Kim, M.S. Lee, et al. (2009) Comparisonand analysis of the running safety followed by derailment coefficient and wheel off-loading at the curves, Journal of the Korean Society for Railway, Jeju Special Self-Governing Province, pp. 347-358.
  4. Ministry of Land, Infrastructure, Transport and Tourism: MLIT(Japan) (2002) A technical standard about the railroad, Appendix-2: Evaluation technique of train operation stability, pp. 724-731.
  5. The National Railroad Administration (1998) The design standard of the railroad bridge, Korea Institute of Construction Technology.
  6. Korea Railroad Research Institute (2004) Analysis on the Dynamic Behaviors of Railway Plate Girder Bridges according to speed of Train, Inha University.
  7. H.M. Kim, J.T. Park, E.S. Cho, W.S. Hwang (2004) An Experimental Study on Vibration Characteristics for the Plate Girder Railway Bridge having a Rail Joint, Korean Society of Civil Engineers, Pyeongchang-gun, Gangwon-do, pp. 6-11.
  8. J.Y. Yoo (2009) The Vibration serviceability Estimation of Railway Bridges subjected to Moving Train, A graduate degree thesis, Woosong University.
  9. S.S. Kim (2010) Evaluation of the running safety of tilting train when accelerating at curved track roadbed (R600), A graduate degree thesis, Sungkyunkwan University.

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  1. Evaluation of Curving Performance and Running Safety of New High-Power Electric Locomotive vol.37, pp.6, 2013, https://doi.org/10.3795/KSME-A.2013.37.6.827
  2. Study of Influence of Wheel Unloading on Derailment Coefficient of Rolling Stock vol.37, pp.2, 2013, https://doi.org/10.3795/KSME-A.2013.37.2.177