Le comportement des buses métalliques enterrées sous recouvrement important dépend de l'Interaction mécanique entre la structure flexible et le sol environnant sous les conditions de charge subies au cours de leur construction et aussi lorsqu'elles sont en service.Une expérimentation en vraie grandeur a été effectuée sur trois buses circulaires de 2,50 m de diamètre ; l'une est de conception classique, les deux autres comportent soit un, soit deux dispositifs contractables devant permettre de reporter dans le sol environnant une partie des contraintes normalement supportées par l'ouvrage.
AbstractThe behaviour of buried structures in earth embankments is related to the stiffness properties of the composite system comprising both the buried structure and the surrounding soil taken as a basic structural unit responding to loading imposed on the system. A field experience on corrugated metal culverts equipped with contractable seams has been carried out in order to verify the transfer of load to or away from the buried structure as a result of the difference in stiffness properties of the structure, with its adjacent uncompassing material and the surrounding expanse of soil.
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