기존선 급곡선부의 장대화 방안에 대한 연구

초록

The railroad under operation has very sharp curves and the state of ballast is somewhat derteriorated due to the traffic loads, which put some constraints in converting the conventional rails into CWR, In making CWR, the determination whether the ballast has sufficient capacity for resisting buckling must be made, quantitatively and qualitatively, and schemes to guarantee the required lateral resistance of ballast should be proposed. In this study, using the in-situ investigated data, the probability of buckling of CWR is given for serveral installation temperatures for CWR. The effect of temping, DTS, and sleeper spacing are taken into account. The buckling probability is given as a function of curvature and installation temperature of CWR and work used to increase the ballast resistance capacity after tamping, i.e., DTS and reduction of sleeper spacing.