STUDY ON SHEAR BEHAVIOR AND BEARING CAPACITY OF STEEL REINFORCED CONCRTE DEEP BEAMS

In order to study the shear behavior of steel reinforced concrete (SRC) deep beams, seven SRC deep beams subjected to mid-span loading were tested. The failure pattern, load-displacement curves and deformation characteristics were recorded to investigate the failure mode and strength of the specimens of different shear span ratio, height ratio (steel web height to beam height) and, flange width ratio (steel flange width to beam width). Based on the modified compression field theory, a formula for calculating shear bearing capacity of SRC deep beams are developed, considering the influence of steel flange. The calculation results indicate that: the model not only consider the effects of shear span ratio and flange width ratio on shear strength synthetically, but also the calculated values obtained by the model are in a good agreement with the experiment values.