Analytical Stress–Strain Relationship for Concrete Confined by Steel Stirrups and/or FRP Jackets
Publication: Journal of Structural Engineering
Volume 132, Issue 9
Abstract
This paper presents a plain strain analytical model, based on the elasticity theory, to determine the confining pressures of transverse reinforcements on the concrete core of a reinforced concrete member. The analytical evaluation of the confining pressures was first carried out on reinforced sections with square and circular stirrups, and subsequently on reinforcement configurations of greater complexity with square and rectangular stirrups and supplementary cross ties. Finally, the model has been used to evaluate the confining pressures applied by external wrapping in any material [fiber-reinforced polymer (FRP), S-glass, steel, etc.] and to design better combinations of techniques and confinement materials. In order to obtain the stress–strain curves due to passive confinement, an analogy between square and circular sections has been introduced. In this way, any active confinement model derived by triaxial tests on cylindrical specimens can be used. The model has been validated by comparing its predictions with results from existing models and experimental tests.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 132 • Issue 9 • September 2006
Pages: 1402 - 1416
Copyright
© 2006 ASCE.
History
Received: Aug 10, 2004
Accepted: Nov 28, 2005
Published online: Sep 1, 2006
Published in print: Sep 2006
Notes
Note. Associate Editor: Jin-Guang Teng
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