Lateral buckling capacities of thin-walled monosymmetric I-beams

摘要

This paper presents test results on lateral-torsional buckling of welded monosymmetric I-beams with various flange plate sizes. Ten different sections including doubly symmetric ones are tested under a concentrated load at the midspan of simply supported beams. Four span lengths ranging from 1.5 m to 3.75 m are chosen for each section. The influences of the monosymmetry and slenderness of sections on the rotation capacity and the ultimate strength are investigated, and the test results are compared with a proposed method to take account of the coupled behavior between lateral-torsional and local buckling.