A SIMPLIFIED METHOD FOR CALCULATING ELASTIC DISTORTIONAL BUCKLING STRESS OF CHANNELS WITH COMPLEX EDGE STIFFENERS AND INTERMEDIATE STIFFENERS UNDER AXIAL COMPRESSIVE LOAD

In order to investigate the simplified calculative method of channels with complex edge stiffeners for the elastic distortional buckling stress under axial compressive load，a total of 90 cold-formed thin-walled steel channels with web stiffeners and complex edge stiffeners，channels with complex edge stiffeners and intermediate V type stiffeners in the web were analyzed by finite strip software CUFSM． The influence of the parameters for the elastic distortional buckling stress was analyzed． Simplified formulas for calculating the elastic distortional buckling stress of web stiffeners and complex edge stiffeners，channels with complex edge stiffeners and intermediate V type stiffeners in the web under axial compressive load were provided． The availability of the formulas was verified．