Shear behavior of reinforced concrete beams strengthening by TRC

Abstract

The paper determines the inclination of the compression strut of variable angle truss model for RC beams strengthened with TRC (textile reinforced concrete) under bending through a proposed semi-analytical approach. A truss unit is used to analyze a reinforced concrete beam strengthened by TRC by the principle of virtual work. Six RC beams, which have an a/d ratio of 3.18, are strengthened by TRC in shear with various schemes. Comparisons are made between the predicted and published experimental results of the six RC beams strengthened with TRC with respect to the inclined angle of the compression strut at this state to investigate the reliability of the proposed semi-analytical approach. The results show that the inclination of the compression strut in the truss models is rather similar to the crack angle in the experiment.