고속철도 콘크리트궤도 장대레일의 피로수명 예측

초록

The Demand for CWR(Continuous Welded Rail) has been increased since concrete track has been applied on the railway actively. However, there are difficulties to decide the replacement period since it is hard to predict the fatigue life of CWR on the concrete track. In this study, the stress were investigated by the vehicle/track interaction analysis. Then, the prediction equation of bending stress according to the speed and the surface irregularity of rail was calculated through multiple regression analysis. Finally, the fatigue life of CWR was predicted based on the prediction equation. The results of this study is to be able to use for prediction of fatigue life of CWR as basis.