Flexural-torsional buckling of monosymmetric beam-columns/tie-beams

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 non dimensional parameters, which illuminates the buckling behaviour 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 non uniform 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 (A).