Numerical study of the stress-strain state of reinforced concrete beam with pre-organized cracks under short-term and long-term loading

The article investigates the numerical modelling of deformation process and fracture of the reinforced concrete beams with preformed organized cracks and without preformed organized cracks under the action of short-term and long-term loading. Identified that, the features was changed of stress-strain state of beam during the deformation process and the main factors determining process of the fracture of beam. Effects from the introduction of organized cracks, observed in physical experiments, were confirmed by numerical experiment. Carried out of comparison analysis of the experimental data and the results of numerical modeling.