Cold-formed thin-walled steel structure has high section efficiency, which has been widely used in the field of construction steel structure. With the change of cold-formed steel structure layout and building floors, the application of built-up section members is increasing.This paper first briefly introduces the design methods of cold-formed thin-walled steel built-up section compression members in North America and China, then summarizes the research results of cold-formed thin-walled steel built-up section compression members in terms of mechanical behavior and design methods. Finally, based on the analysis, the related key research problems for the cold-formed thin-walled steel built-up section compression members are proposed.
Low Temperature Architecture Technology
cold-formed thin-walled steel
stable bearing capacity