Journal of the Korean Society of Safety (한국안전학회지)

The Korean Society of Safety (한국안전학회)
권호 표지
DOI QR코드

DOI QR Code

An Evaluation Study on the Dynamic Stability of High Speed Railway Bridges

고속철도교량의 동적안정성 평가연구

  • Bang, Myung-Seok (Department of Safety Eng., Korea National Univ. of Transportation) ;
  • Chung, Guang-Mo (Department of Safety Eng., Graduate School, Korea National Univ. of Transportation)
  • 방명석 (한국교통대학교 안전공학과) ;
  • 정광모 (한국교통대학교 안전공학과 대학원)
  • Received : 2012.01.03
  • Accepted : 2012.07.24
  • Published : 2012.08.31
Download PDF
⟨ Previous Next ⟩

Abstract

In the design of high speed railway bridges is important a impact factor as a tool of assessing the dynamic capacitys of bridges. However, the impact factor(or dynamic amplification factor, DAF) of high speed railway bridges may essentially be changeable because the dynamic response is affected by the long train length(380 m), number of axles and high speed velocity(300 km/h)(Korea Train eXpress: KTX). Therefore, on this study will be examined the dynamic capacity and stability of the typical PSC Box Girder of high speed railway bridge. At first, the static/dynamic analysis is performed considering the axle load line of KTX based upon existing references. Additionally, the KTX moving load is transformed into the dynamic time series load for conducting various parameter studies like axle length, analytical time increment, velocity of KTX. The time history analysis is repeatedly performed to get maximum dynamic responce by varying axle load length, analytical time increment, velocity of KTX. The study shows that dynamic analysis has resonable results with optimal axle load length(0.6 m) and time increment(0.01 sec.) and maximum DAF and dynamic resonance happens at 270 km/h velocity of KTX.

Keywords

Acknowledgement

Supported by : 한국교통대학교

References

  1. 건설교통부, "고속전철 교량/터널구조 및 유지관리 시스템 개발(교량부문) 1단계 보고서," 1999.
  2. 한국철도기술연구원, "고속철도 선로 구축물 시스템 안정화 기술개발," 2006.
  3. 최창근, 송명관, 양신추, "고속철도 차량(TGV)-교량 상호작용의 단순화된 3차원 해석 모델," 한국전산구조공학회 논문집, 13권, 2호, 2000, pp. 165-178.
  4. 한국철도기술연구원 "고속철도 선로 구축물 성능 확보를 위한 구조물 계측 및 평가시스템 개발 연구 보고서," 2000.
  5. 강기동, "고속철도 연속 PSC BOX 교량에 적용한 설계기준의 현장 계측에 의한 검증," 한국강구조학회 논문집, 18권 1호, 2006, pp. 53-58.
  6. 대한토목학회, "철도설계기준(철도교편)," 2004.
  7. 일본 국토교통성철도국, "철도구조물등설계기준/동 해설-콘크리트구조물," 2004.
  8. UIC 776-1 R, "Loads to be Considered in Railway Bridge Design 4th Ed," 1994.
  9. 한국철도시설공단, "Bridge Design Manual (BRDM) Final Report," 1995.
  10. 한국고속철도공단, "서울-부산간 경부고속철도 제 6공구 실시 설계보고서(구조계산서)," 1995.
  11. 고속철도사업기획단, "고속철도 강교량 및 합성형 교량 설계표준 시방서 해설(안)," 1991.
  12. 송창혁, "다양한 변수를 고려한 고속철도교량의 최적 동적증폭계수 분석 방법," 충남대학교 대학원, 공학석사학위논문, 2008.
  13. UIC 776-3 R, "Deformation of Bridges 1st Ed," 1989.
  14. 한국고속철도공단, "경부고속철도 남서울-천안간(궤도 제1공구) 궤도부설 기타공사 실시설계보고서," 2003.
  15. Chopra A.K., "Dynamics of Structure: Theory and Applications to Earthquake Engineering," Prentice- Hall, Inc., 1995.