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Modelling the bond between concrete and reinforcing steel in a fire

Huang, Z. (2010) Modelling the bond between concrete and reinforcing steel in a fire. Engineering Structures, 32 (11). pp. 3660-3669. ISSN 0141-0296

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Abstract

A non-linear procedure is presented for modelling the bond characteristic between concrete and reinforcing steel for reinforced concrete structures in a fire. The accuracy and reliability of the model are demonstrated by the analysis of one pull-out test and one beam test at ambient temperature and four full-scale beams tested under two fire conditions. The model is clearly capable of predicting the response of reinforced concrete members and structures in a fire with acceptable accuracy. The bond-link element has been found to have good computational stability and efficiency for 3D analysis of reinforced concrete structures in fires. It is shown that the bond condition between the concrete and reinforcing steel bar has an important influence on the fire resistance of reinforced concrete structures, especially when the temperature of the reinforcing steel bar is high (more than 500 degrees C). Hence, the current assumption of a perfect bond condition for analysis of reinforced concrete structures under fire conditions is unconservative. (C) 2010 Elsevier Ltd. All rights reserved.

Item Type: Article
Copyright, Publisher and Additional Information: © 2010 Elsevier. This is an author produced version of a paper subsequently published in Engineering Structures. Uploaded in accordance with the publisher's self-archiving policy.
Keywords: Bond characteristic; Bond-link element; Fire resistance of concrete structures; Finite element analysis
Institution: The University of Sheffield
Academic Units: The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Civil and Structural Engineering (Sheffield)
Depositing User: Miss Anthea Tucker
Date Deposited: 14 Dec 2010 09:22
Last Modified: 08 Feb 2013 17:29
Published Version: http://dx.doi.org/10.1016/j.engstruct.2010.08.010
Status: Published
Publisher: Elsevier
Refereed: Yes
Identification Number: 10.1016/j.engstruct.2010.08.010
URI: http://eprints.whiterose.ac.uk/id/eprint/42718

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