Novel Anchor System for CFRP Rod: Finite-Element and Mathematical Models
Publication: Journal of Composites for Construction
Volume 11, Issue 5
Abstract
An innovative wedge-anchor system with a longitudinal circular profile has been designed for gripping carbon-fiber-reinforced-polymer rods. The anchor system, consisting of a barrel, a number of wedges, and a sleeve, is capable of carrying the ultimate tensile strength of the rod. Three-dimensional (3D) and axisymmetric finite-element models have been developed and applied in order to determine the stresses inside the anchor system. Using the 3D model, the overall performance of the anchor represented by the tensile load-displacement relationship compared favorably with the experimental results. A comparison study between the 3D and axisymmetric models revealed that the axisymmetric model underestimated the contact pressure on the rod surface. Using the force-fitting principle of thick cylinders, a mathematical model was also developed, and under specific assumptions, the mathematical solution compared favorably with finite-element model results.
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Acknowledgments
The writers thank the Natural Sciences and Engineering Research Council of Canada (NSERC) and Hughes Brothers Inc. (USA) for their support.
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Information & Authors
Information
Published In
Journal of Composites for Construction
Volume 11 • Issue 5 • October 2007
Pages: 469 - 476
Copyright
© 2007 ASCE.
History
Received: Aug 24, 2005
Accepted: May 30, 2006
Published online: Oct 1, 2007
Published in print: Oct 2007
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