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Vibration du ballast ferroviaire
An experimental set-up at a reduced scale was carried out in laboratory. This device reproduces the action of tamping on ballast. In these experiments, we highlight the frequency influence. Three different behaviours were observed depending on the frequency: a stiff behaviour at low frequencies: the grains motion is mainly due to the tightening loading effect. A liquid behaviour at high frequencies: vibrations effects are very significant, ballast opposes therefore little resistance to the tightening loading. A viscous behaviour at intermediate frequency: for this range of frequencies, vibrations and tightening force have the same importance.
Vibration du ballast ferroviaire
An experimental set-up at a reduced scale was carried out in laboratory. This device reproduces the action of tamping on ballast. In these experiments, we highlight the frequency influence. Three different behaviours were observed depending on the frequency: a stiff behaviour at low frequencies: the grains motion is mainly due to the tightening loading effect. A liquid behaviour at high frequencies: vibrations effects are very significant, ballast opposes therefore little resistance to the tightening loading. A viscous behaviour at intermediate frequency: for this range of frequencies, vibrations and tightening force have the same importance.
Vibration du ballast ferroviaire
Foret, Gilles (author) / Oviedo, Xiemena (author) / Sab, Karam (author) / Gautier, Pierre-Etienne (author)
Revue Française de Génie Civil ; 7 ; 777-795
2003-06-01
19 pages
Article (Journal)
Electronic Resource
Unknown
SYSTÈME ET PROCÉDÉ DE CONTRÔLE AUTOMATIQUE DU VOLUME DE BALLAST D'UNE VOIE FERROVIAIRE
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