Loading capacity of cold-formed RHS members used in multi-story buildings

摘要

Cold-formed steel rectangular hollow section (RHS) members have good properties in high efficiency to resist loads. This kind of members is being considered to be used in multi-story or middle rise building structures recently in the area where earthquake response is not a predominant factor. However the behaviors of RHS members should be thoroughly studied. A series of loading tests on cold-formed RHS compressive specimens are recently performed. The research parameters are types of steel, including low carbon steel and weatherproof steel, cold-formed hardening effect, eccentricities of compressive loads, slenderness, width-to-thickness ratio of plates as well as the types of ribs.