Practical example of roadbed improvement by the post-filling method in TC-type labor saving track

Abstract

 The TC-type labor-saving track has a structure that integrates sleepers and ballast, and was developed for the purpose of not requiring repair work such as tamping. The laying is in progress. Most of them maintain good track conditions, but some of them are laid on soft roadbeds, and the adjustment amount of rail surface height adjustment may be larger than the limit value, so maintenance is difficult. Therefore, we implemented a post-filling method for the purpose of improving the roadbed, and confirmed the workability and basic performance.