Cold-formed steel sections with web openings subjected to web crippling under two-flange loading conditions — Part II: Parametric study and proposed design equations

Asraf Uzzaman, James Lim, David Nash, James Rhodes, Ben Young

Research output: Contribution to journalArticle

39 Citations (Scopus)
143 Downloads (Pure)

Abstract

A parametric study of cold-formed steel sections with web openings subjected to web crippling was undertaken using finite element analysis, to investigate the effects of web holes and cross-section sizes on the web crippling strengths of channel sections subjected to web crippling under both interior-two-flange (ITF) and end-two-flange (ETF) loading conditions. In both loading conditions, the hole was centred beneath the bearing plate. It was demonstrated that the main factors influencing the web crippling strength are the ratio of the hole depth to the flat depth of the web, and the ratio of the length of bearing plates to the flat depth of the web. In this paper, design recommendations in the form of web crippling strength reduction factors are proposed, that are conservative to both the experimental and finite element results.
Original languageEnglish
Pages (from-to)79-87
Number of pages9
JournalThin-Walled Structures
Volume56
DOIs
Publication statusPublished - Jul 2012

Keywords

  • steel behaviour
  • cold-formed steel
  • web crippling behaviour
  • flange Loading
  • finite element analysis
  • Web hole
  • Design recommendations

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