Abstract
The article introduces the comparative results of the deformability and fracture resistance of steel reinforced concrete beams with combined reinforcement obtained on the basis of laboratory tests with the results of computer-aided mathematical modelling of such structures. The results were compared for the purpose of mathematical model testing and its further usage in the study of the optimal reinforcement percentage in steel reinforced concrete beams with combined reinforcement. Results obtained on the basis of the proposed mathematical model show sufficient correlation with the experimental data up to the stage of structure strength exhaustion. As the result it enables to evaluate the features of destruction of the tested samples with the sufficient accuracy, namely, their load-carrying capacity, cracks formation, to analyze stresses in both steel bars and tapes, monitor deflections and deformations during the loading of the tested beams. Deviation of the experimental values for steel reinforced concrete beam with the combined reinforcement from the data obtained according to mathematical model: up to 5.0% for fracture resistance; up to 14.3% for deformability.
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