Résumé
Cette étude concerne un élément de béton creux précontraint manufacturé collé à un élément de béton arnmé manufacturé afin de former une poutre composée, dans le but de déterminer la redistribution des contraintes sous chargement en raison des très fortes contraintes de traction dans le béton de l’élément non précontraint et qui excèdent largement la résistance à la traction du béton. Il ne s’est pas produit de séparation entre les deux éléments durant l’essai et même à la rupture.
Summary
Investigations are described at which a shallow precast prestressed concrete member was glued unto a precast reinforced concrete member to form a composite beam. The purpose of the investigation was to study stress redistribution under loading due to the very high concrete tensile stresses in the non-prestressed component, greatly exceeding the concrete tensile strength. No separation between the two components took place during testing and at failure.
References
P. W. Abeles—See Fig. 20.7 in “An Introduction to Prestressed Concrete”, Vol. 2, Concrete Publications Ltd., London, 1966.
P. W. Abeles—See Plates 13.3 and 13.4 in “An Introduction to Prestressed Concrete” Vol. I, Concrete Publications, Ltd, London, 1964.
P. W. Abeles.—“Cracking and Bond Resistance in High Strength Reinforced Concrete Beams, Illustrated by Photoelastic Coating’, Title No. 63-58, A.C.I. Journal, November, 1966.
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Abeles, P.W. Investigation of composite prestressed concrete beams comprising precast members glued together by means of resins. Mat. Constr. 1, 33–36 (1968). https://doi.org/10.1007/BF02478997
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DOI: https://doi.org/10.1007/BF02478997