Ultimate strength of bolted moment-connections between cold-formed steel members

J.B.P. Lim, D.A. Nethercot

Research output: Contribution to journalArticle

87 Citations (Scopus)

Abstract

The behaviour and design of bolted moment-connections between cold-formed steel members, formed by using brackets bolted to the webs of the section, is considered. The particular problem of the moment-capacity of such joints being lower than that of the cold-formed steel sections being connected because of web buckling, caused by the concentration of load transfer from the bolts, is addressed. In this paper, a combination of laboratory tests and finite element analyses is used to investigate this mode of failure. It is demonstrated that there is good agreement between the measured ultimate moment-capacity and that predicted by using the finite element method. A parametric study conducted using the finite element model shows that the moment-capacity of a practical size joint can be up to 20% lower than that of the cold-formed steel sections being connected. Web buckling so-caused must therefore be considered in the design of such connections.
Original languageEnglish
Pages (from-to)1019-1039
Number of pages20
JournalThin-Walled Structures
Volume41
Issue number11
DOIs
Publication statusPublished - Nov 2003

Keywords

  • cold-form steel
  • bolted moment-connection
  • mode of failure

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