The current state of nonlinear calculations of reinforced concrete structures

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Rubric:     Theoretical and experimental studies   
Annotation:
Reinforced concrete is a non-linear material. This nonlinearity is determined by the nonlinearity of the behavior of concrete during compression and tension, the formation of cracks in tension during the deformation of the structure, as well as the nonlinearity of the work of the reinforcement. Accounting for non-linear work of reinforced concrete is necessary to obtain reliable data on the stress-strain state and strength of structures. But unlike, for example, from steel, the nonlinearity of reinforced concrete manifests itself in a more complex form.
At present, the calculation of buildings and structures, as well as difficult working units of structures is performed using computer programs. The results of numerical studies published in scientific publications and in the reports of scientific conferences show that, unlike metals, it is still extremely difficult to obtain calculated results for the stress-strain state of reinforced concrete structures strictly corresponding to the experimental data.