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

Abstract

This version is available at https://strathprints.strath.ac.uk/41141/ Strathprints is designed to allow users to access the research output of the University of Strathclyde. Unless otherwise explicitly stated on the manuscript, Copyright © and Moral Rights for the papers on this site are retained by the individual authors and/or other copyright owners. Please check the manuscript for details of any other licences that may have been applied. You may not engage in further distribution of the material for any profitmaking activities or any commercial gain. You may freely distribute both the url (https://strathprints.strath.ac.uk/) and the content of this paper for research or private study, educational, or not-for-profit purposes without prior permission or charge.Any correspondence concerning this service should be sent to the 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-twoflange (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.

Web crippling behaviour of cold-formed steel channel sections with web holes subjected to interior-one-flange loading condition-Part I: Experimental and numerical investigation

“…This paper extends the work of Uzzaman et al [2][3][4][5] to consider the interiorone-flange (IOF) loading condition for cold-formed steel channel sections with circular holes in the web. The web crippling strength of lipped channel sections for the interiorone-flange (IOF) loading condition, as shown in Fig.…”

“…[ [2][3][4][5] for the web crippling strength of cold-formed steel channel sections with circular holes in the web under the end-two-flange (ETF) and interior-two-flange (ITF) loading conditions. This paper extends the work of Uzzaman et al [2][3][4][5] to consider the interiorone-flange (IOF) loading condition for cold-formed steel channel sections with circular holes in the web.…”

“…Recent research on web crippling of cold-formed steel channel sections, other than that by Uzzaman et al [2][3][4][5] who again considered only the two-flange loading conditions, has not covered the case of holes [12][13][14][15].…”

Web crippling behaviour of cold-formed steel channel sections with web holes subjected to interior-one-flange loading condition – Part II: parametric study and proposed design equations

“…Strength reduction factor equations have recently been proposed by Uzzaman et al [7][8][9][10] for web crippling strength of cold-formed steel channel -sections with circular holes in the web under the end-two-flange (ETF) and interior-two-flange (ITF) loading conditions. Recent research on web crippling of cold-formed steel channel-sections, other than that by Uzzaman et al, who again considered only the two-flange loading conditions,…”

Effect of web holes on web crippling strength of cold-formed steel channel sections under end-one-flange loading condition - Part II: Parametric study and proposed design equations

“…[1][2][3][4] for web crippling strength of cold-formed steel channel -sections with circular holes in the web under the end-two-flange (ETF) and interior-two-flange (ITF) loading conditions. This paper extends the work of Uzzaman et al [1][2][3][4] to consider the endone-flange (EOF) loading condition for cold-formed steel channel -sections with circular holes in the web.…”