A dynamic model of ballasted rail track with bituminous sub-ballast layer

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Abstract

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.
Lingua originaleEnglish
pagine (da-a)366-378
Numero di pagine13
RivistaPROCEDIA: SOCIAL & BEHAVIORAL SCIENCES
Volume53
Stato di pubblicazionePublished - 2012

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