Web crippling tests of hollow flange channel beams - ETF AND ITF load cases

Poologanathan, Keerthan, Mahendran, Mahen, & Steau, Edward (2014) Web crippling tests of hollow flange channel beams - ETF AND ITF load cases. In Australasian Structural Engineering Conference (ASEC 2014), 9-11 July 2014, Sky City, Auckland. (Unpublished)

Abstract

This paper presents the details of an experimental study of a cold-formed steel hollow flange channel beam known as LiteSteel Beam (LSB) subject to web crippling actions (ETF and ITF). Due to the geometry of the LSB, as well as its unique residual stress characteristics and initial geometric imperfections resultant of manufacturing processes, much of the existing research for common cold-formed steel sections is not directly applicable to LSB. Experimental and numerical studies have been carried out to evaluate the behaviour and design of LSBs subject to pure bending actions, predominant shear actions and combined actions. To date, however, no investigation has been conducted into the web crippling behaviour and strength of LSB sections under ETF and ITF load conditions. Hence experimental studies were conducted to assess the web crippling behaviour and strengths of LSBs. Twenty eight web crippling tests were conducted and the results were compared with the current AS/NZS 4600[1] and AISI S100 [2]design equations. Comparison of the ultimate web crippling capacities from tests showed that AS/NZS 4600[1] and AISI S100 [2] design equations are unconservative for LSB sections under ETF and ITF load cases. Hence new equations were proposed to determine the web crippling capacities of LSBs. Suitable design rules were also developed under the DSM format.

Impact and interest:

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ID Code: 70515
Item Type: Conference Paper
Refereed: Yes
Additional URLs:
Keywords: Hollow flange beams, Web crippling, Cold-formed steel beams, ETF and ITF load cases, Experiments
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > CIVIL ENGINEERING (090500) > Structural Engineering (090506)
Divisions: Current > Schools > School of Civil Engineering & Built Environment
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2014 [please consult the author]
Deposited On: 28 Apr 2014 05:03
Last Modified: 09 Aug 2016 07:32

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