Review article

Currently, most formulas for determining the shear strength of reinforced concrete beams are based on the analysis of the behavior of beams and the results of experiments on the criteria for the formation of oblique cracks due to shear force and under the action of moment. However, unlike European standards (EC 2) or American standards (ACI318), the calculation of the shear resistance of the beam cross-section taking into account the influence of longitudinal reinforcement is not specifically presented in Russian standards (SP 63.13330). In this article, the authors use the numerical simulation method in the ABAQUS program to simulate the effect of longitudinal reinforcement on the shear resistance of beams without stirrups, considering the nonlinearity of materials, the formation and development of cracks in the beam, the destruction of the beam, the construction of load relations and deflection in the middle of the span of the beam. The simulation results have shown that the shear resistance of the beams increases with the increase in the content of longitudinal reinforcement. The comparison study shows that the simulation results are in good agreement with the experimental results. Therefore, investigation of the effect of factors such as strength of reinforcement, concrete, location of longitudinal reinforcement and stirrups in beams on the shear resistance of beams can be done by numerical modeling with high reliability.