A Dynamic Model of Ballasted Rail Track with Bituminous Sub-Ballast Layer

The bituminous sub-ballast layer within the ballasted rail track allows some mechanical and environmental advantages. An analytical model of a ballasted rail track with sub-ballast layer has been proposed by considering the rail as viscous-elastic continuous beam discretely supported, at four levels of elasticity. The model was used to compare the mechanical performance of both ballasted track with and without bituminous sub-ballast layer. The results confirmed that the bituminous sub-ballast layer reduces the dynamic forces on the ground and achieves the technical objectives as reduction of ground borne vibrations and increase of the design life of the rail track.


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  • Accession Number: 01485624
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jun 27 2013 2:38PM