Analytical Study of Reinforced Concrete Flexural Beams Under Fatigue Loading
Abstract:An analytical model which includes the bond-related tension stiffening effect for the analysis of reinforced concrete (RC) flexural beams under fatigue loading has been proposed. It allows estimating of not only the local responses in the sections between cracks but also the global residual deflection of RC beams in the unloading stage during cyclic loading. By means of taking into account the fatigue degradation mechanisms of the concrete in different stress states and the steel-concrete interface bond, the midspan deflection development and the redistribution process of the responses between cracks of RC beams with increased load cycles are simulated. The applicability of the analytical model is further demonstrated through the comparison with fatigue test results. The analytical results show that the proposed model reasonably reflects the real fatigue behaviors of RC flexural beams.
Document Type: Research Article
Publication date: July 1, 2012
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