The analysis of rail sleeper displacements in the function of subgrade parameters

The paper concerns the quality of interaction between the basic elements of the railroad surface, based on digital modeling. A map of vertical displacements of railroad subgrade was developed in the function of changing conditions in the subgrade load capacity. These conditions were characterized by the indicator value of the subgrade density and the location of subgrade density zones. The article presents the continuation of research, which at the introductory stage was focused only on the analysis of normal stress and shear stress in the railway sleeper.