Abstract
Abstract
Took into account experience of light metal constructions using in building. Paid attention to possible metal beams weight reducement ways. Interest to metal beams weight reducement appears, because they are widely used in modern building. Beams weight reducement is considered as an effective way of building spending reducement. The ways of reducing the material consumption of I-beams are formulated as manufacturing corrugated and perforated walls. Stress-strain state of corrugated beams numerical research results are shown. The results of solving the optimization task of finding the circular perforation geometry in the I-beam wall are presented. I-beam stress-strain state during bending under constrained torsion conditions research are presented. Made a conclusion about the efficiency of corrugated and perforated beams in comparison with traditional rolled beams. Concluded that it is necessary to take into account the stresses caused by the I-beam constrained torsion when the load adding eccentricity exceeds 15% of the flange width.