Abstract
The article presents the results of numerical experiments aimed at studying the stress-strain state of combined steel and concrete structures and separate elements under loading by computer simulation of behavior. Following the goal, the simulation is carried out using the stress-strain diagrams of applied materials, experimentally received. The study of the structures is carried out using the finite element method on both two-dimensional and three-dimensional models. To obtain reliable numerical data, additional research is carried out, the essence of which is to find parameters and boundary conditions to achieve the convergence of the results for each computer model, as well as to carry out numerical studies similar to experimental ones. Taking into account the received data, several numerical studies are conducted, which allows to find additional information about the stress-strain state of the structures, in particular, the behavior of the developed nodal connections is modeled. A comparison of the obtained numerical and experimental data shows their high convergence.
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