Steel Beams and their Plastic Bending-share Resistance

The theoretical analysis, experimental investigation and calculation of the plastic bending-shear resistance of the steel cross-section beams are presented within the paper. The original theoretical analysis of the plastic bending-shear resistance of the hybrid steel beams with the compact I cross-sections is also presented. They can have cross-sections combined from different steels, where flanges are forms of the higher strength steels and the web is from the middle steel. The theoretical calculations take into consideration the actual international standards for the design of the steel structures. The experimental program has comprised the tests of 24 simple rolled beams with IPE160 cross-section. The obtained experimental results are evaluated and compared with the corresponding theoretical results. (paper)