Dynamic Characteristics of Railway Plate Girder Bridges with Increase of Diesel Locomotive Speed

철도차량의 증속에 따른 판형교의 진동특성

  • Received : 2006.07.14
  • Accepted : 2006.11.24
  • Published : 2006.12.27

Abstract

As the ambient vibration test (AVT) of railway bridges has a limited range of speed, it has a limitation in examining the dynamic behavior of bridges accordingto speed. Thus, in order to analyze the correlation between the speed of a train passing over a bridge and the bridge's dynamic response, we conducted a speed-increasing experiment using a real diesel locomotive. To analyze the acceleration response characteristics, we attached seven vertical accelerometers at equal intervals throughout the entire section of the bridge except the supports, and one horizontal accelerometer to the middle span. Linear variable differential transformers (LVDT) were installed at the bridge's center in both vertical and horizontal directions to investigate the vertical and horizontal behaviors. The test train was statically loaded at the center and at the end of the bridge. And its speed was increased from 5 km/h to 90 km/h. With data obtained from the experiment, the vibration level was evaluated in each direction by the filtering frequency, and the level of horizontal vibration was examined in comparison with vertical vibration. The displacement and wheel load variation was analyzed by speed.

Acknowledgement

Supported by : 한국철도기술연구원

References

  1. 김현민(2003), 무도상 판형교의 횡방향 동적거동 특성 분석을 위 한 실험적 연구, 한국철도학회추계학술대회논문집, pp.591-595
  2. 오지택(2003), 기존선 속도향상에 대비한 판형교의 동적안정성 향상기술개발, KRRI 연구보고서, pp.43-108
  3. 오지택(2004), 기존선 속도향상에 대비한 판형교의 동적안정성행 향상기술개발, KRRI 연구보고서
  4. 이준석(2003), 강철도교 잔존수명 평가 및 유지관리기법 개발, KRRI 연구보고서
  5. 조은상(2004), 강철도교의 가속도 응답 특성에 관한 실험적 연 구, 한국강구조학회 학술발표대회논문집, pp.487-492
  6. 조은상(2005), 필터링방법에 따른 철도 판형교의 가속도 응답 특성, 대한토목학회 학술대회논문집, pp.237
  7. 철도청(1999), 철도설계기준, 철도청
  8. 최진유(2002), 무도상 판형교의 동적거동특성 분석을 위한 실 험적 연구, 한국철도학회 추계학술대회논문집(1), pp.678-683
  9. Coenraad Esveld(2001), Modern Railway Track, MRTProductions, Netherlands
  10. ERRI D 214(1999), Rail Bridges for speeds>200km/h. RP9, European Rail Research Institute, pp.21-24, pp.152-154
  11. Kl. Knothe(1994), Interaction of Railway Vehicles with the Track and Its Substructure, SWETS & ZEITLINGER B.V
  12. Rao V. Dukkipati(1988), Computer-Aided Simulation in Railway Dynamics, Marcel Dekker. Inc., USA
  13. SYSTRA(1995), Bridge Design Manual(BRDM) Final Report, Korea High Speed Rail Construction Authority(KHRC)
  14. UIC Code 776-1R(1994), Loads to be considered in railway bridge design, 4th edition, International Union of Railway
  15. UIC Code 776-3R(1989), Deformation of bridges, 1st edition, International Union of Railway
  16. Vijay K. Garg(1984), Dynamics of Railway Vihicle Systems, Academic Press, CANADA
  17. V.A. Profillidis(1995), Railway Engineering, Avebury Technical, UK