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FEM model (2D and 3D) to simulate dynamic deformations of railroad
embankment and underlying soil is presented. Numerical modeling is performed for the
railway embankment geometry used in Russian Federation. Loading conditions were
corresponding to forces created by SAPSAN (Siemens Velaro RUS) high-speed train and
TGV train. Since there was no possibility to experimentally measure displacements and
accelerations inside ballast layer induced by SAPSAN train, the numerical model was
validated using experimentally measured displacements and accelerations exited inside the
railway embankment by cargo train traveling at several different speeds (20-120 km/h). The
validated model was used in order to predict displacements and accelerations induced in the
ballast layer by high-speed moving (50-315 km/h) SAPSAN train.
Keywords: railroad embankment; dynamic deformations; FEM modelling |
full paper (pdf, 1984 Kb)