Deflection Limit on Vibration Serviceability of High-speed Railway Bridges Considering the Exposed Time Duration

진동지속시간을 고려한 고속철도교량의 진동 사용성 처짐 한계

  • 전법규 (부산대학교, 구조공학) ;
  • 김남식 (부산대학교, 사회환경시스템공학부) ;
  • 김성일 (한국철도기술연구원)
  • Published : 2010.06.10

Abstract

This paper aims for proposed the deflection limit on vibration serviceability of high-speed railway bridges considering the exposed time duration when a train passes a railway bridge. For this purpose, bridge-train transfer function was derived and bridge-train interaction analysis was performed by using the derived function. The vertical acceleration signals of passenger cars obtained from bridge-train interaction analysis were compared with them from the bridge-train transfer function by moving constant force analysis. Therefore it was estimated possible to induce the comfort deflection limit of railway bridge by using bridge-train transfer function. The deflections by moving force of single span bridge and continuous bridge were assumed as sine and haversine wave. The deflection limit on vibration serviceability of high-speed railway bridges considering the exposed time duration can be expanded using bridge-train transfer function and bridge comfort limit considering serviceability due to bridge vibration. And it was compared to other allowable deflection limits of railway bridge design specifications.

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