Based on the experimental study on the cold-formed steel unlipped channels under concentrated bearing load, the feasibility about Perry formula applied in cold-formed steel structures is analyzed.

As one of the strength-governing modes for cold-formed channel columns,distortional buckling is receiving more attentions.

For flexural cold-formed thin-walled lipped channels,there are three fundamental buckling modes,which are plate local,section distortional and member flexural-torsional.

Local and distortional buckling of cold-formed lipped-channel column with V-stiffened web under axial compression force are investigated in this paper, the paper includes the fallowing main contents: (1)Elastic local buckling critical stress is predicted by eigenvalue buckling analysis of ANSYS, including interaction of the connected element.