Load-deformation behaviour prediction of timber beams externally reinforced with composite materials
Paper
Paper/Presentation Title | Load-deformation behaviour prediction of timber beams externally reinforced with composite materials |
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Presentation Type | Paper |
Authors | Karunasena, Karu W. (Author) and Grice, Andrew (Author) |
Editors | Kanok-Nukulchai, Worsak, Munasinghe, Sunil and Anwar, Naveed |
Journal or Proceedings Title | Materials, Experimentation, Maintenance and Rehabilitation |
Journal Citation | 6, pp. 129-134 |
Number of Pages | 6 |
Year | 2006 |
Place of Publication | Pathumthani, Thailand |
ISBN | 9748257185 |
Conference/Event | 10th East Asia-Pacific Conference on Structural Engineering and Construction: Materials, Experimentation, Maintenance and Rehabilitation (EASEC-10) |
Event Details | 10th East Asia-Pacific Conference on Structural Engineering and Construction: Materials, Experimentation, Maintenance and Rehabilitation (EASEC-10) Event Date 03 to end of 05 Aug 2006 Event Location Bangkok, Thailand |
Abstract | Old timber beams have a tendency to weaken with age. In order to repair old timber structures, a rehabilitation technique is required. A rehabilitation method that is getting attention in civil engineering applications recently involves bonding sheets (or bars) of fibre reinforced polymer (FRP) to the tensile face of the affected beam member to improve its strength and deflection characteristics. This paper presents a prediction model based on the virtual work method and Bazan- Buchanan non-linear constitutive law for timber. The model allows the moment-curvature and load deflection relations of FRP reinforced timber beams to be predicted. The model was verified using experimental results from the literature. A parametric analysis was conducted to show the influence of key parameters such as FRP area and FRP type on the load-deflection characteristics of beams loaded in four point bending. From the model presented here, It IS possible to obtain the ultimate load and deflection that each beam can sustain before failure. As expected, the results show that application of an FRP composite to timber beams improves the strength and deflection characteristics of the beam. This indicates that this method may be a quite viable option for the rehabilitation of old timber beam structures |
Keywords | timber beams; rehabilitation; load-deflection; prediction model; composite materials; strengthening; fibre-reinforced polymer; ultimate load; deflection; non-linear constitutive relation |
ANZSRC Field of Research 2020 | 401610. Timber, pulp and paper |
400510. Structural engineering | |
401602. Composite and hybrid materials | |
Public Notes | File reproduced in accordance with the copyright policy of the publisher/author. |
Byline Affiliations | James Cook University |
https://research.usq.edu.au/item/9zyx2/load-deformation-behaviour-prediction-of-timber-beams-externally-reinforced-with-composite-materials
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