MODELING THE IMPACT OF DAMAGE TO THE CONCRETE COVER AND THE COMPRESSED REBAR OF A REINFORCED CONCRETE BEAM IN "LIRA-SAPR"

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Abstract
Most modern buildings use reinforced concrete elements, which can sustain damage during operation, creating potential risks for their safe use. This article focuses on the analysis of reinforced concrete beams with cross-sectional damage using the LIRA-SAPR software suite. Special attention is given to the damage of the protective concrete layer and the top compressed reinforcement, which is crucial for assessing the residual load-bearing capacity and the stress-strain state of the structures. The modeling of reinforced concrete elements is performed using the finite element method. The obtained results have practical significance for further research and the improvement of methods for evaluating the residual load-bearing capacity of reinforced concrete structures, which will help reduce the risk of failure of such elements during operation.

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