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Shear tests of lipped chanel beams with web openings

Mahendran, Mahen & Poologanathan, Keerthan (2012) Shear tests of lipped chanel beams with web openings. In 10th International Conference on Advances in Steel Concrete Composite and Hybrid Structures, Singapore.

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    Abstract

    Cold-formed steel members are increasingly used as primary structural elements in the building industries around the world due to the availability of thin and high strength steels and advanced cold-forming technologies. Cold-formed steel lipped channel beams (LCB) are commonly used as flexural members such as floor joists and bearers. However, their shear capacities are determined based on conservative design rules. Current practice in flooring systems is to include openings in the web element of floor joists or bearers so that building services can be located within them. However, limited research has been undertaken on the shear behaviour and strength of LCBs with web openings. Hence a detailed experimental study involving 32 shear tests was undertaken to investigate the shear behaviour and strength of LCBs with web openings. Simply supported test specimens of LCBs with an aspect ratio of 1.0 and 1.5 were loaded at mid-span until failure. This paper presents the details of this experimental study and the results of their shear capacities and behavioural characteristics. Experimental results showed that the current design rules in cold-formed steel structures design codes are very conservative for the shear design of LCBs with web openings. Improved design equations have been proposed for the shear strength of LCBs with web openings based on the experimental results from this study.

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    ID Code: 52789
    Item Type: Conference Paper
    Keywords: Shear Tests , Lipped Channel Beams , Web Openings, Cold-formed steel structures, Experiments
    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 2012 Please consult the authors.
    Deposited On: 27 Jul 2012 08:42
    Last Modified: 05 Sep 2012 16:32

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