NONLINEAR FINITE ELEMENT ANALYSIS OF STEEL REINFORCED CONCRETE BEAMS

摘要

Based on experimental research, the bearing performance of steel reinforced concrete has been studied in detail by finite element method. Steel reinforced concrete are simulated by using different calculation element, and a nonlinear combination element is put into model for considering bond and slip between steel and concrete, as well as reinforcement and concrete. The force-displacement curves are obtained and the influence of relative slip to the bearing capacity and deformation are analyzed too, as well as the stress distribution for concrete and steel under ultimate state. Furthermore, the influence of steel reinforced concrete bearing capacity under different numerical experiment parameters are discussed by using this model, which includes strength of concrete, volumetric percentage of stirrups, volumetric percentage of steel, and strength of steel. Eventually, a good agreement is obtained between the calculation and experiment.