1-4 OPERATIONAL RELIABILITY OF THE RAILWAY TRACK STRUCTURE

Abstract

This study evaluates the stress–strain state of railway subgrade and culvert systems under seismic and operational loading conditions using digital modeling techniques. The analysis was performed using a three-dimensional finite element model. The results indicate that soil moisture content, embankment height, and culvert wall thickness significantly influence structural deformation and reliability. An increase in soil moisture leads to a reduction in the deformation modulus and a corresponding increase in settlement. Increasing the culvert wall thickness enhances structural stiffness and improves seismic safety. The findings confirm that digital modeling techniques are effective tools for assessing railway infrastructure stability and developing optimal engineering solutions.

Keywords: seismic safety, railway subgrade, culvert, digital modeling, finite element method, sustainable engineering, operational reliability.