Experimental studies of lipped channel beams subject to web crippling under ETF and ITF load cases

Sundararajah, Lavan, Mahendran, Mahen, & Poologanathan, Keerthan (2015) Experimental studies of lipped channel beams subject to web crippling under ETF and ITF load cases. In Eighth International Conference on Advances in Steel Structures, 21-24 July 2015, Lisbon, Portugal.



Lipped channel beams (LCBs) are commonly used as floor joists and bearers in buildings. However, they are subjected to specific failure modes such as web crippling. Despite considerable web crippling research, recent studies [1-6] have shown that the current web crippling design rules are unable to predict the test capacities under ETF and ITF load cases. In many instances, the predictions by the available design standards such as AISI S100, AS/NZS 4600 and Eurocode 3 Part 1-3 [7-9] are inconsistent. Hence thirty-six tests were conducted to assess the web crippling behaviour and strengths of LCBs under two flange load cases. Experimental web crippling capacities were then compared with the predictions from the current design rules. These comparisons showed that AS/NZS 4600 and AISI S100 design equations are very unconservative for LCB sections under ETF load case and are conservative for ITF load case. Hence improved equations were proposed to determine the web crippling capacities of LCBs. Suitable design rules were also developed using the direct strength method. This paper presents the details of this study and the results including improved design rules.

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ID Code: 87288
Item Type: Conference Paper
Refereed: No
Additional URLs:
Keywords: Cold-formed Steel Beams, Lipped Channel Beams, Web Crippling, ETF and ITF Load Cases, Direct Strength Method and Experiments
Divisions: Current > Schools > School of Civil Engineering & Built Environment
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2015 [please consult the author]
Deposited On: 17 Mar 2016 23:19
Last Modified: 20 Mar 2016 22:11

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