Abu, A.K., Burgess, I.W. orcid.org/0000-0001-9348-2915 and Plank, R.J. (2013) Tensile Membrane Action of Thin Slabs Exposed to Thermal Gradients. Journal of Engineering Mechanics, 139 (11). pp. 1497-1507. ISSN 0733-9399
Abstract
A number of simplified design methods have been developed to predict composite slab capacities in fire. Most of these extend ambient-temperature large-deflection slab behavior to the elevated-temperature phase by reducing the strengths of fire-exposed concrete and reinforcement while neglecting the effects of thermal expansion and thermal bowing of the slab. Experiments have shown that there are significant differences between the predictions from these methods and the actual behavior and failure modes of ambient- and elevated-temperature concrete slabs in tensile membrane action. Therefore, this paper describes the development of a new analytical method that incorporates both thermal and mechanical effects into the prediction of slab behavior in fire conditions. It uses the variational Rayleigh-Ritz approach to classical large-deflection plate theory. The method is found to produce accurate predictions of deflections and membrane tractions; however, it requires further refinement for accuracy of stresses. The results are compared with numerical modeling using VULCAN, a specialist finite-element (FE) program for structural fire engineering.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2013 American Society of Civil Engineers. This is an author produced version of a paper subsequently published in Journal of Engineering Mechanics. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Composite slabs; Fires; Tensile membrane action; Thermal gradients; Concrete; Large deflections |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Multidisciplinary Engineering Education (Sheffield) The University of Sheffield > Faculty of Social Sciences (Sheffield) > School of Architecture (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 07 Oct 2016 12:21 |
Last Modified: | 20 Mar 2018 18:43 |
Published Version: | http://dx.doi.org/10.1061/(ASCE)EM.1943-7889.00005... |
Status: | Published |
Publisher: | American Society of Civil Engineers |
Refereed: | Yes |
Identification Number: | 10.1061/(ASCE)EM.1943-7889.0000597 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:105472 |