Empirical interaction equations are recommended in various specifications for the design of biaxially bent beam-columns. In this paper, the strength requirements specified in the Canadian Standards Association Standard S16-1969 for the plastic design of biaxially loaded beam-columns are compared with theoretical relations. It is shown that the S16-1969 provisions lead to unduly conservative designs when applied to thin walled square and circular hollow structural sections. Based on the theoretical relations, simplified interaction equations are proposed.
ASJC Scopus subject areas
- Civil and Structural Engineering
- Environmental Science(all)