Parametric studies and design recommendations of cold-formed steel sections with web openings subjected to web crippling

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

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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 openings were located at the mid-depth of the webs. 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, the ratio of the distance of the hole from the edge of the bearing plates 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; these are shown to be conservative to both the experimental and finite element results.
Original languageEnglish
Number of pages8
Publication statusPublished - 3 Dec 2012
Event6th International Conference on Coupled Instabilities in Metal Structures, CIMS 2012 - Glasgow, United Kingdom
Duration: 3 Dec 20125 Dec 2012

Conference

Conference6th International Conference on Coupled Instabilities in Metal Structures, CIMS 2012
CountryUnited Kingdom
CityGlasgow
Period3/12/125/12/12

Keywords

  • cold-formed steel
  • web opening
  • web crippling
  • finite element analysis

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    Uzzaman, A., Lim, J., Nash, D., Rhodes, J., & Young, B. (2012). Parametric studies and design recommendations of cold-formed steel sections with web openings subjected to web crippling. Paper presented at 6th International Conference on Coupled Instabilities in Metal Structures, CIMS 2012, Glasgow, United Kingdom.