DOI QR코드

DOI QR Code

철도교량 단부 궤도의 사용성 향상을 위한 횡단궤도시스템 적용에 관한 실험적 연구

Experimental Study on Applying a Transition Track System to Improve Track Serviceability in Railway Bridge Deck Ends

  • Lim, Jongil (Graduate School of Railway, Seoul National University of Science & Technology) ;
  • Song, Sunok (Graduate School of Railway, Seoul National University of Science & Technology) ;
  • Choi, Jungyoul (Dept. of Track and Railway Operations, Technische Universitat Berlin (TU-Berlin)) ;
  • Park, Yonggul (Graduate School of Railway, Seoul National University of Science & Technology)
  • 투고 : 2013.03.18
  • 심사 : 2013.05.24
  • 발행 : 2013.06.30

초록

콘크리트궤도가 부설된 철도교량 단부의 궤도구성품(레일 및 체결구)에는 교량 단부회전에 의해 상향력 및 압축력과 같은 궤도-교량의 상호작용력이 작용하여 손상 및 성능저하가 유발된다. 이러한 교량의 휨거동에 기인한 단부 궤도의 상호작용에 따른 문제를 해결하고자 본 연구에서는 횡단궤도시스템을 개발하고 그 성능을 입증하였다. 횡단궤도시스템의 구조안정성 검토를 위해 3차원 유한요소해석을 통한 시간이력해석을 실시하고 그 결과를 독일의 성능요구조건 및 관련기준과 비교하였다. 또한, 교량-궤도 상호작용 분석을 위한 시험체를 제작하여 실내시험을 수행하고 횡단궤도시스템의 적용 효과를 평가하였다. 연구결과 횡단궤도시스템의 정, 동적 구조안정성 및 횡단궤도 적용 후 교량 단부 궤도의 상호작용력(레일변위, 레일저부응력 및 체결구 응력)이 크게 저감될 수 있음을 실험적으로 입증하였다.

The components of concrete track (rail and rail fastening system) in railway bridge deck ends are damaged and deteriorated by track-bridge interaction forces such as uplift forces and compression forces owing to their structural flexural characteristics (bridge end rotation). This had led to demand for alternatives to improve structural safety and serviceability. In this study, the authors aim to develop a transition track to enhance the long term workability and durability of concrete track components in railway bridge deck ends and thereby improve the performance of concrete track. A time-history analysis and a three-dimensional finite element method analysis were performed to consider the train speed and the effect of multiple train loads and the results were compared with the performance requirements and German standard for transition track. Furthermore, two specimens, a normal concrete track and a transition track, were fabricated to evaluate the effects of application of the developed transition track, and static tests were conducted. From the results, the track-bridge interaction force acting on the track components (rail displacement, rail stress, and clip stress) of the railway bridge deck end were significantly reduced with use of the developed transition track compared with the non-transition track specimen.

키워드

참고문헌

  1. D.B. Deutsche Bahn, A.G. Netz (2008) Bridge deck Ends, Check for serviceability limit state of superstructure, DS804 - Appendix 29(German language).
  2. D.B. Deutsche Bahn, A.G. Netz (2003) Richtlinie 804.5202 (German language).
  3. Korea Rail Network Authority (2008) Research for improvement of concrete track interface performance.
  4. Rudolf Seidel (2000) Feste Fahrbahn auf groBen Stahluberbauten der NBS Hannover-Berlin, EI-Eisenbahningenieur (51), pp. 23-29 (German language).
  5. D.B. Deutsche Bahn, A.G. Netz (1995) Anforderungskatalog zum Bau der Fahrbahn, 3. Uberarbeitete Auflage, Stand, Catalogues for construction of slab track (German language).
  6. Edgar Darr, Werner Fiebig (2006) Feste Fahrbahn, Konstruktion und Bauarten fur Eisenbahn und StraBenbahn, ISBN 3-8266-1485-2, Eurail press (German language).
  7. Korea Rail Network Authority (2011) Railway design Standard (Track part).
  8. Korea Rail Network Authority (2011) Railway design Standard (Roadbed part).
  9. J.Y. Choi, S.C. Yang, (2008) The Displacement Limit at the End of an Approach Slab for a Railway Bridge with Ballastless Track, Journal of the Korean Society for Railway, 11(2), pp. 195-202.
  10. H.K. Park, S.Y. Jang, S.C. Yang, Y.G. Park (2009) A Parametric Study on the Serviceability of Concrete Slab Track on Railway Bridge, Journal of the Korean Society for Railway, 12(1), pp. 95-103.
  11. R.K. Min, D.Y. Sung, Y.G. Park (2012) Analysis of Dynamic Behavior of Railway Bridge with Concrete Track, Journal of the Korean Society for Railway, 15(2), pp. 147-153. https://doi.org/10.7782/JKSR.2012.15.2.147
  12. D.S. Chun, J.Y. Choi, H.Y. An, Y.G. Park (2008) Behavior of Fastening system of HSR bridge ends deck on slab Track installed Bridge, Proceedings of the Korean Society for Railway Autumn Conference, Kwang-ju, Republic of Korea, pp. 1624-1633.
  13. K.W. Lee (2013) Applying transition track system to improve track performance in a railway bridge deck ends, Master's Thesis, Seoul National University of Science & Technology.
  14. International Union of Railway (UIC) Track Bridge Interaction.
  15. International Union of Railway (UIC) Code776-3, Deformation of Bridge.
  16. Eurocode (2003) Actions on Structure, Part 2, Traffic load on bridge, EN 1991-2.
  17. Eurocode (2005) Basis of Structural Design, EN 1990:2001+A1.
  18. International Union of Railway (UIC), (2008) Recommendations for Design & Calculation of ballastless track, ISBN2-7461-1397-X.

피인용 문헌

  1. Evaluation of the Structural Behavior Characteristics and Long Term Durability for Transition Track Systems in Railway Bridge Deck Ends vol.17, pp.4, 2014, https://doi.org/10.7782/JKSR.2014.17.4.260