Design of Built-Up Cold-Formed Steel Columns According to the Direct Strength Method

摘要: Abstract The (DSM) direct strength method [1] is used in order to predict the axial compression capacity of innovative cross-section shapes for built-up columns from cold-formed steel (CFS) profiles. proposed four composed have been adapted obtain members increased strength-to-weight ratio. After excluding various buckling mechanisms response compressive loads, highly stable with reduced sensitivity initial imperfections are obtained. DSM predictions validated experimentally cross-sections types. investigation shows that could easily be extended towards if provisions sensitive global-distortional interaction included method. good agreement experiments also indicates assemblies reliable and can integrated into everyday construction practice.