Stability assessment of railway subgrade slopes under earthquake-induced inertial loading

This article entails a thorough investigation into the problems surrounding the maintenance of seismic stability of the subgrades of railways when an earthquake occurs. The seismic impact on the soil layers of the subgrade produced horizontal inertial forces, distribution of which by height, and their impact on the overall stability of the structure were assessed with the help of calculation formulas. The results of the calculations suggest that it is necessary to increase safety in designing road systems in seismic areas, strengthen weak areas, and choose the best design options. Theoretical methods have been worked out and suggested on how to compute the best variant of the slopes to avoid different types of deformations of the railway track in the area of the seismically active zone. Accepting seismic coefficient in the upper and lower section of the earthwork has been established using a graph, which is based on the type of soils and slopes.