IMPACT OF SUPPORT CLOSED SECTION RIBS ON THE CRITICAL MOMENT FOR LATERAL TORSIONAL BUCKLING OF STEEL BEAMS
Journal Title: Structure and Environment - Year 2018, Vol 0, Issue 1
Abstract
The study presents the results of theoretical investigations into the effect produced by support closed section ribs on the critical moment for lateral torsional buckling (Mcr) of bisymmetric I-beams. Elastic restraint against warping, at the site of support, was provided by closed section ribs made from selected rolled profiles (longitudinally cut circular tubes, angles, and channels). Detailed calculations were made for beams under uniform load applied to the top flange of the section. The results obtained in the investigations were compared with the values obtained for beams with end plate. The analysis was conducted of the impact of ribs on the increase in the critical resistance of beams. Analytically estimated critical moments for lateral torsional buckling were verified using FEM tools (LTBeamN, Abaqus).
Authors and Affiliations
Rafał Piotrowski, Andrzej Szychowski
Keywords
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- EP ID EP521382
- DOI 10.30540/sae-2018-001
- Views 85
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