Review article

The article considers the bearing capacity of rigidly embedded I-beams perforated with hexagonal and rhomboidal shaped openings under uniformly distributed load. As a criterion of the bearing capacity exhaustion, the author uses the variant of plastic hinges formation in calculated design sections of the beam or loss of the wall stability. There is assumed a bilinear character of material deformation in the elastic-plastic stage, with the secant modulus at the hardening section being equal to 0.001E. The stress state was analyzed using the ANSYS software package. The distribution of the yielding zone was evaluated by the level of equivalent to von Mises stresses. The bearing capacity of beams with different perforation was compared under the condition of identical total area of openings positioned at the same height. It is noted that the perforation reduces the bearing capacity of the beam by 30-45 %, depending on the type of perforation.