Numerical Simulation of Load Bearing Capacity of Corroded Reinforced Concrete Beam after Cyclic Loading

Abstract

The numerical simulation analysis of the static load bearing capacity of a corroded reinforced concrete (RC) beam after being subjected several times to fatigue load is conducted using the ABAQUS software. Parameters, such as section area, yield strength, and ultimate strength of the steel bars, are modified to simulate the influence of reinforcement corrosion and cyclic loading. The nonlinear static analysis of the RC beam at different corrosion rates and cycle numbers after cyclic loading is also performed. The yield load of the corroded RC beam after cyclic loading decreases almost linearly with an increase in the corrosion rate and number of cyclic loading, and the influence of the two factors on the yield load is similar. The ultimate deflection of the RC beam increases nonlinearly with an increase in the corrosion rate and increases almost linearly with an increase in the number of cyclic loading. The influence of corrosion rate is larger than that of the number of cyclic loading and is particularly more obvious when the number of cyclic loading is higher.