Shear Analysis of Concrete with Brittle Reinforcement
Publication: Journal of Composites for Construction
Volume 7, Issue 4
Abstract
The design of steel-reinforced concrete relies on lower-bound plasticity theory, which allows an equilibrium-state to be postulated without considering compatibility. This is of particular benefit in shear design, due to the complexity of shear-transfer, where simplified models such as the truss analogy are used. Lower-bound plasticity theory, however, relies on stress-redistribution. If brittle reinforcement [such as fiber-reinforced-plastic (FRP)] is used in concrete, lower-bound plasticity theory cannot be applied. This paper studies how compatibility, equilibrium, and the material constitutive laws can be combined to establish the actual conditions within an FRP-reinforced beam subjected to shear. A crack-based analysis is proposed to model shear failure in a beam with brittle reinforcement. The analysis is used to illustrate the importance of satisfying compatibility requirements, and the results are contrasted with the current shear design proposals for FRP-reinforced concrete.
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Information
Published In
Journal of Composites for Construction
Volume 7 • Issue 4 • November 2003
Pages: 323 - 330
Copyright
Copyright © 2003 American Society of Civil Engineers.
History
Received: Oct 25, 2001
Accepted: May 3, 2002
Published online: Oct 15, 2003
Published in print: Nov 2003
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