Slab track structures become deformed under the effects of differential subgrade settlement. According to properties China Railway Track System (CRTS) II slab on a subgrade, three-dimensional (3D) coupled model based both discrete element method (DEM) and finite difference (FDM) was developed. The were simulated using FDM DEM, respectively. verified. deformation contact forces gravel grains in ...

Modelling slab track-bridge interaction subject to a moving train usually involves solving complex high-dimensional matrix equations which is time-consuming. This research works optimize the auto-assembling process in coupling matrices formulation and improve computational efficiency by truncating dynamic used time integral scheme. To achieve above goals, key issue appropriately couple systems’...

The coupled heat and moisture actions could easily cause deformation, cracking corrosion problems in the slab ballastless track under operational conditions via China Railway Track System (CRTS) Ⅱ. In this paper, two one-quarter-scaled models of CRTS Ⅱ hygro-thermal environment were tested a testing chamber, respectively. To study effect constrained on structural performance structure, temperat...