Investigation of flexural-torsional buckling behavior of cold-formed structural channel columns

Tóm tắt

The paper investigates both the theory and experimental behavior of thinwalled columns under flexural-torsional buckling modes. The global buckling of these such columns can be categorized into flexural, torsional, and combined flexural-torsional modes, noting that torsional and combined flexural-torsional modes are less explored and more challenging to control in experiments compared to the pure flexural buckling mode. The paper aims to determine the elastic flexural-torsional buckling load theoretically and to set up experiments to observe and analyze the column's behavior under flexural-torsional buckling. The theoretical predictions are subsequently compared with experimental results to discuss and to thoroughly understand this flexuraltorsional buckling mode.