Flexural-Torsional Buckling of Monosymmetric Beam-Columns/Tie-Beams

摘要

The paper reviews recent research developments on elastic flexural-torsional buckling of monosymmetric I-beams, and of doubly- and monosymmetric beam-columns/tie-beams. The developments include the introduction of a new set of nondimensional parameters, which illuminates the buckling behavior of these types of member and facilitates the derivation of simple design formulae for predicting the buckling capacities. More importantly, the paper extends the recent work to monosymmetric beam-columns/tie-beams under nonuniform moment load cases including double curvature bending. Approximate out-of-plane buckling formulae describing the stability criteria for such members under common in-plane loading conditions are derived.