A study of the rail and bridge stability according to rail conditions on the bridge

교량상 레일 조건에 따른 레일 및 교량의 안전성 연구

  • 민경주 ((주)철도안전연구소) ;
  • 김영국 (한국철도시설공단 감사실) ;
  • 우용근 (KORAIL / Korail테크 선로시설연구소)
  • Published : 2009.05.21


In railway bridges, various loads including train load, transverse load and braking force are applied to continuous CWR or semi-continuous longer rail located on non-continuous bridge superstructures. The rail-girder interaction due to thermal expansion is also very complex in railway bridges because the thermal characteristics for each of the rails and girder are quite different. Recently, the bridge retrofits for seismic loads were performed on bridges not designed for these loads. These retrofits may however have limitations with respect to rail-girder interactions because, in general these retrofits address issues related only to seismic loads. In this study of seismic evaluations for railway bridges, the load effects on the bridge rails from the road beds through the continuous rails shall be considered. Practical methods will be proposed which will increase the railway stability. For this, rail-girder interaction analyses due to train loads, temperature changes and seismic loads were performed and the results reviewed from a practical point of view.