Calculation of the Walls of Beams Under the Action of Local Stress in the Places where the Load is Applied to the Sole

In modern Russian standards, the calculation of the strength of the wall of a beam, welded or rolled, not reinforced with webbing, under the action of local stress in the places where the load is applied to the upper sole is made according to the formula of the centrally compressed element. It is assumed that the extreme values of local stresses in the wall act at a distance of 2–3 thicknesses of the beam flanges and are distributed evenly. Finite element calculations show that stress concentrations and significant non-linearity of the distribution are observed near the places where loads are applied in the beam walls. The paper presents the results of finite element modeling of the overlap beam grillage, where special attention is paid to the support zones of beams with a floor-by-floor scheme of co-extension. The results of calculations are presented, which show the zones of nonlinear stress distribution, as well as their values. The obtained stress values in the finite element model are compared with the values obtained by the standard calculation.