L'effort trenchant dans la modélisation du comportement jusqu' à rupture des pouters en béton armé et précontraint

Abstract

ABSTRACT An analytical model is presented for predicting complete shear load-deformation response of reinforced or prestressed concrete beams. Equilibrium, compatibility and stress-strain relationships are formulated in term of average stresses and average strains. according to the assumption of smeared cracks. This model is able to analyze sections having unusual forms or reinforcing details, loaded in combined bending, axial load and shear. Predictions of the model are compared with several tests on reinforced or prestressed beams and are shown to give a fair agreement with the experimental behaviour.