ABSTRACT
Most of studies concerning the lateral torsional buckling of beam-columns in inelastic range have been carried out for cases where monotonic bending moment is loaded. However, beam-columns of multi-story frames are subjected to both fluctuating axial forces and cyclic bending moment during earthquakes. In this study, the maximum strength as well as the energy absorption capacity of beam-columns which is determined by lateral torsional buckling is studied by carrying out experiments under various loading conditions.
