Numerical modelling and design of lipped channel beams subject to shear

Poologanathan, Keerthan & Mahendran, Mahen (2014) Numerical modelling and design of lipped channel beams subject to shear. In 7th European Conference on Steel and Composite Structures, 10-12 September 2014, University of Napoli Federico II, Naples. (In Press)

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Abstract

Cold-formed steel members are increasingly used as primary structural elements in buildings due to the availability of thin and high strength steels and advanced cold-forming technologies. Cold-formed lipped channel beams (LCB) are commonly used as flexural members such as floor joists and bearers. Many research studies have been carried out to evaluate the behaviour and design of LCBs subject to pure bending actions. However, limited research has been undertaken on the shear behaviour and strength of LCBs. Hence a numerical study was undertaken to investigate the shear behaviour and strength of LCBs. Finite element models of simply supported LCBs with aspect ratios of 1.0 and 1.5 were considered under a mid-span load. They were then validated by comparing their results with test results and used in a detailed parametric study based on the validated finite element models. Numerical studies were conducted to investigate the shear buckling and post-buckling behaviour of LCBs. Experimental and numerical results showed that the current design rules in cold-formed steel structures design codes are very conservative for the shear design of LCBs. Improved design equations were therefore proposed for the shear strength of LCBs. This paper presents the details of this numerical study of LCBs and the results.

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ID Code: 70511
Item Type: Conference Paper
Refereed: Yes
Additional URLs:
Keywords: Lipped Channel Beams, Shear Capacity, Cold-formed Steel Structures, Finite Element Analyses, Experiments, Shear Buckling and Post-Buckling
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > CIVIL ENGINEERING (090500) > Structural Engineering (090506)
Divisions: Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2014 [please consult the author]
Deposited On: 28 Apr 2014 04:44
Last Modified: 02 Aug 2015 22:20

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