A Study on Dynamic Capacity Assessment of PSC Box Girder High Speed Railway Bridges Using Time Series Load

시계열하중을 이용한 PSC 박스 거더 고속철도교량의 동적성능 평가에 관한 연구

  • 한성호 (충남대학교 토목공학과) ;
  • 방명석 (충주대학교 안전공학과) ;
  • 이우상 (한국스마트구조시스템연구원)
  • Received : 2009.07.17
  • Accepted : 2010.03.02
  • Published : 2010.06.30

Abstract

The design concept of high speed railway bridges is applied to a method for increasing the stiffness of existing bridge structures considering the impact factor by a static load. Generally, the process of structural design would be relied upon an advanced foreign technology. However, the dynamic amplification factor (DAF) and dynamic capacity assessment of high speed railway bridges may be conducted essentially a detailed estimation because the resonance phenomenon is affected by the long length (380 m) and high speed (300 km/h) moving of a high speed railway (Korea Train eXpress: KTX). Therefore, this study will be examined the dynamic capacity of the typical PSC Box Girder high speed railway bridge efficiently, and offered the basic information for the reasonable structural design. For this, the static analysis is conducted considering the load line diagram of KTX based upon existing references. In addition, the KTX moving load is transformed into the time series load considering various analytical variables. The time history analysis is assessed reasonable using the transformed time series load. At that time, analytical variables for calculating the time series load are considered loading node distance, time increment and KTX velocity variation etc. The dynamic capacity of the PSC Box Girder high speed railway bridge is examined based upon the FE analysis result systematically. The structural safety is assessed quantitatively in accordance with the related regulation of the inside and outside of the country.

References

  1. 강기동(2006) 고속철도 연속 PSC BOX 교량에 적용한 설계기준의 현장 계측에 의한 검증, 한국강구조학회 논문집, 한국강구조학회, 제18권 제1호, pp. 53-58.
  2. 고속철도사업기획단(1991) 고속철도 강교량 및 합성형 교량 설계 표준 시방서 해설(안).
  3. 건설교통부(1999) 고속전철 교량/터널구조 및 유지관리 시스템 개발(교량부문) 1단계 보고서.
  4. 대한토목학회(2004) 철도설계기준(철도교편).
  5. 송창혁(2008) 다양한 변수를 고려한 고속철도교량의 최적 동적증폭계수 분석 방법, 공학석사학위논문, 충남대학교 대학원.
  6. 일본 국토교통성철도국(2004) 철도구조물등설계기준/동해설-콘크리트구조물.
  7. 최창근, 송명관, 양신추(2000) 고속철도 차량(TGV)-교량 상호작용의 단순화된 3차원 해석모델, 한국전산구조공학회 논문집, 한국전산구조공학회, 제13권 제2호, pp. 165-178.
  8. 한국고속철도공단(1995) 서울-부산간 경부고속철도 제6공구 실시 설계보고서(구조계산서).
  9. 한국고속철도공단(2003) 경부고속철도 남서울-천안간(궤도 제1공구) 궤도부설 기타공사 실시 설계보고서.
  10. 한국철도기술연구원(2000) 고속철도 선로 구축물 성능 확보를 위한 구조물 계측 및 평가시스템 개발 연구보고서.
  11. 한국철도기술연구원(2006) 고속철도 선로 구축물 시스템 안정화 기술개발.
  12. 한국철도시설공단(1995) Bridge Design Manual(BRDM) Final Report.
  13. Chopra A.K. (1995) Dynamics of Structure: Theory and Applications to Earthquake Engineering, Prentice-Hall, Inc.
  14. UIC 776-1R (1994) Loads to be Considered in Railway Bridge Design 4th Ed.
  15. UIC 776-3R (1989) Deformation of Bridges 1st Ed.