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Shear strengthening of reinforced concrete beams with CFRP

Bukhari, IA, Vollum, RL, Ahmad, S and Sagaseta, J (2010) Shear strengthening of reinforced concrete beams with CFRP MAGAZINE OF CONCRETE RESEARCH, 62 (1). 65 - 77. ISSN 0024-9831

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Abstract

The current paper reviews existing design guidelines for strengthening beams in shear with carbon fibre reinforced polymer (CFRP) sheets and proposes a modification to Concrete Society Technical Report TR55. It goes on to present the results of an experimental programme which evaluated the contribution of CFRP sheets towards the shear strength of continuous reinforced concrete (RC) beams. A total of seven, two-span concrete continuous beams with rectangular cross-sections were tested. The control beam was not strengthened, and the remaining six were strengthened with different arrangements of CFRP sheets. The experimental results show that the shear strength of the beams was significantly increased by the CFRP sheet and that it is beneficial to orientate the FRP at 45° to the axis of the beam. The shear strength of FRP strengthened beams is usually calculated by adding individual components of shear resistance from the concrete, steel stirrups and FRP. The superposition method of design is replaced in Eurocode 2 by the variable angle truss model in which all the shear is assumed to be resisted by the truss mechanism. The current paper proposes a methodology for strengthening beams with FRP that is consistent with Eurocode 2

Item Type: Article
Additional Information: © 2010 Thomas Telford Ltd. Permission is granted by ICE Publishing to print one copy for personal use. Any other use of these PDF files is subject to reprint fees. The definitive version is available at http://www.cement-research.com
Uncontrolled Keywords: Science & Technology, Technology, Construction & Building Technology, Materials Science, Multidisciplinary, Materials Science, COMPOSITES, SHEETS
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Divisions: Faculty of Engineering and Physical Sciences > Civil and Environmental Engineering
Depositing User: Symplectic Elements
Date Deposited: 23 Oct 2012 16:33
Last Modified: 23 Sep 2013 19:36
URI: http://epubs.surrey.ac.uk/id/eprint/713661

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