Strength and ductility prediction of concrete beams reinforced with internal steel and external composite materials

Karunasena, W., and Anderson, W.C. (2005) Strength and ductility prediction of concrete beams reinforced with internal steel and external composite materials. In: Proceedings of 4th Australian Congress on Applied Mechanics, pp. 561-566. From: 4th Australian Congress on Applied Mechanics, 16-18 February 2005, Melbourne, VIC, Australia.

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Abstract

Reinforced concrete structures undergo continuous deterioration throughout their service life, and many are required to support loads exceeding in initial design loads. Such structures need to be replaced or rehabilitated, with rehabilitation being the cheapest alternative. There are currently a number of techniques available for rehabilitating structural members in functionally obsolete or structurally deficient structures. One such rehabilitation method, getting particular attention during the last decade, is the use of externally bonded fibre reinforced polymers strips to increase or restore load capacity of structurally deficient or functionally obsolete beam, column and slab members. To design for team rehabilitation, it is fundamentally important that the expected increase in capacity due to the fibre reinforced polymer strip is quantified. In this paper, a simple computational model that predicts the linear and nonlinear behaviour of a fibre reinforced polymer rehabilitated reinforced beam is presented. The model has been implemented in Matrix Laboratory software package. The mode: quantifies the moment-curvature and load-deflection relationships. The model is verified by comparing numerical results with experimental data for fibre reinforced polymer rehabilitated beams. The results of a parametric study investigating the influence of tensile steel reinforcement and composite reinforcement (carbon or glass fibres) are presented.

Item ID: 14785
Item Type: Conference Item (Research - E1)
ISBN: 978-1-876855-23-9
Keywords: composite materials; concrete beam; debonding; ductility prediction; rehabilitation; reinforced concrete
Date Deposited: 26 Nov 2010 01:25
FoR Codes: 09 ENGINEERING > 0905 Civil Engineering > 090506 Structural Engineering @ 50%
09 ENGINEERING > 0905 Civil Engineering > 090502 Construction Engineering @ 25%
09 ENGINEERING > 0912 Materials Engineering > 091202 Composite and Hybrid Materials @ 25%
SEO Codes: 87 CONSTRUCTION > 8702 Construction Design > 870201 Civil Construction Design @ 50%
87 CONSTRUCTION > 8703 Construction Materials Performance and Processes > 870301 Cement and Concrete Materials @ 25%
87 CONSTRUCTION > 8704 Construction Processes > 870401 Civil Construction Processes @ 25%
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