Strength of Cracked Concrete. Part 3. Load Carrying Capacity of Panels Subjectedto In-Plane Stresses

摘要

This report deals with the load carrying capacity of concrete specimens subjectedto in-lane stresses by means of the theory of plasticity. A review of the experiments of concrete specimens subjected to in-plane stresses is carried out. By applying the hypothesis that cracking of concrete introduces potential yield lines which may be more dangerous that the ones found by the usual plastic theory, the load carrying capacity of cracked specimens under different conditions is investigated. A mechanism of strength reduction is proposed based on the analysis of the damage caused by stressed transverse reinforcement. By comparing with the test results of panels subjected to in-plane stresses, an expression of the effectiveness factor as a function of the transverse tensile stresses is suggested.