하중 조건에 따른 Ballast 침하 거동 평가

초록

A need for economic maintenance of ballast track through the preventive maintenance plan has been raised. And the major component of the ballast track settlement is the settlement of ballast layer. Therefore, the settlement of ballast layer should be reasonably estimated by a reasonable settlement progressive model that is suitable for domestic railway conditions. First, the experimental evaluation for the factors that should be considered in the settlement model, is needed. In this study, we carried out the ballast box test to evaluate the ballast settlement behaviour according to the various loading conditions. In this tests, even if the relatively large load is applied to the ballast track in a very small proportion, the impact of that on the settlement of the ballast track is unexpectedly large.