Resistance of a composite beam in the area of bending moment and transverse forces

The object of research is the bearing capacity of a composite (steel-concrete) beam. The work aims to analyze the stress-strain state at the site of the bending moment and the site of the bending and transverse forces for a composite beam. The objectives of the study are to determine the nature and location of the fracture, considering the physical nonlinearity of concrete and steel, to determine how the stress changes in different sections of the composite beam, and to determine forces, deflections, and deformations. Method. The Ansys software package is used to assess the stress-strain state, and nonlinear diagrams of materials based on the most modern theories of calculations of concrete and steel are used. Results. Plots of normal and tangential stresses and deformations are proposed both separately for a steel beam and a concrete slab and jointly for a composite beam. The deflections of the beam are determined, the height of the compressed section zone is determined, the results of the stress-strain state of the composite beam are obtained based on nonlinear diagrams of materials, the failure site around bending moment and the joint section are determined the actions of bending and transverse forces.