2020 Volume 76 Issue 2 Pages I_315-I_323
In the ballasted track laid on the sandbar area, the fine particles of the ballast and the sand flying from the outside deposit on the ballast layer. In addition, the mud pumping may be generated due to the decrease in drainage performance of the ballast layer. In such a section, the application of the ballastless track injected with superfine particle cement milk is considered to reduce the maintenance frequency related to ballasted track. In this study, the settlement characteristics of the ballastless track on the sand roadbed were examined by experimental and analytical methods. As the results of the cyclic loading tests of full-scale track model, cyclic triaxial tests of cylindrical specimens and finite element analysis, it was concluded that the ballastless track is likely to be applicable to the sand roadbed.
