SHEAR DEFORMATION OF REINFORCED CONCRETE BEAM

Abstract

This paper presents the experimental results on shear deformation of concrete beams with shear reinforcement, which was measured by laser speckle method. The results indicate that besides flexural deformation the significant amount of shear deformation occurred after shear cracking, which was caused by the localized shear deformation along shear cracks. Based on the experimental results, a rather simple mechanical model for prediction of the deformation is proposed. The model consists of a truss model that calculates the shear deformation and a modified Branson's model with the tension shift concept to calculate the flexural deformation. The model can predict the experimental results well.