Structural analysis and parametric study ballasted track in sandy regions

The sand intrusion in railway tracks sandy regions can significantly change the mechanical behaviour of and thus threaten safety train operation. This paper presents substantial field tests on both clean to study effect longitudinal resistance ballast bed vibration track structures. After that, a 3D multi-scale discrete element model is developed micro-contact between particles during passing detail. Also, speeds axle loads discussed. results show that increases acceleration amplitude rail sleeper by 11.3% 50.3%, while decreases 44.9%. Besides, changes energy distribution track, wherein frequencies highest are increased decreased. parametric shows high speed cause increase overall load an forces particles, diffusion angle contact force chain, displacements displacements.