Effects of Eccentricity on the Seismic Rehabilitation Performance of Nonseismically Detailed Interior Beamwide Column Joints
Publication: Journal of Composites for Construction
Volume 16, Issue 5
Abstract
In this paper, the effects of eccentricity on the effectiveness of carbon-fiber-reinforced polymer (CFRP) or glass-fiber-reinforced polymer (GFRP) in repairing the shear strength and ductility of nonseismically detailed beam-wide column joints have been evaluated. For this purpose, four (two concentric and two eccentric) full-scale nonseismically detailed interior beamwide column joints were used as control specimens. All four subassemblages were subjected to similar cyclic lateral displacement to provide the equivalent of severe earthquake damage. The damaged control specimens were then repaired by filling their cracks with epoxy and externally bonding them with CFRP sheets and GFRP sheets. These repaired specimens were then retested and their response histories were obtained. Hence, a total of eight specimens were tested: four control, and four repaired. The response histories of the control and repaired specimens were then compared. The results were compared through hysteretic loops, load-displacement envelopes, energy dissipation capacity, secant stiffness degradation, and shear strength and damage indices. Moreover, the effectiveness of the proposed repair schemes in repairing the eccentric and concentric joints was also compared. The present study demonstrates that proposed repair schemes can recover the performance of both damaged reinforced concrete (RC) concentric and eccentric beam-wide column joints effectively.
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Acknowledgments
This research was made possible through the support of, and collaboration with, FYFE Asia Private Limited in Singapore.
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Information
Published In
Journal of Composites for Construction
Volume 16 • Issue 5 • October 2012
Pages: 507 - 519
Copyright
© 2012 American Society of Civil Engineers.
History
Received: Aug 23, 2011
Accepted: Jan 31, 2012
Published online: Feb 3, 2012
Published in print: Oct 1, 2012
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