Evaluation of As-Built, Retrofitted, and Repaired Shear-Critical Hollow Bridge Columns under Earthquake-Type Loading
Publication: Journal of Bridge Engineering
Volume 10, Issue 5
Abstract
The objective of this research is to investigate the seismic performance of as-built, retrofitted, and repaired hollow bridge columns with insufficient shear strength. Two as-built full-scale columns were first tested and repaired using carbon-fiber-reinforced polymer composites (CFRP) jackets and dog-bone-shaped bars and then retested. Another two columns having the same reinforcement as the as-built columns were retrofitted with CFRP jackets. In addition to the tests, the repairability of the failed hollow columns was investigated by analytical evaluation. The test results and analysis of the retrofitted columns showed that CFRP composites can effectively strengthen shear-critical hollow bridge columns and can successfully transform the failure mode from shear to flexure. The test results of the repaired circular columns show that dog-bone-shaped bars successfully repaired the flexural damage caused by the fractured longitudinal bars.
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Acknowledgments
The funding of this research was provided by the National Science Council, Taiwan under grants NSC89-2625-327-002 and NSC 90-2711-3-319-200-14. The writers wish to thank T.-K. Chow, C.-H. Chou, C.-C. Lin, and S. J. Wang for their assistance in constructing and testing the specimens.
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Information & Authors
Information
Published In
Journal of Bridge Engineering
Volume 10 • Issue 5 • September 2005
Pages: 520 - 529
Copyright
© 2005 ASCE.
History
Received: Dec 30, 2003
Accepted: Jul 21, 2004
Published online: Sep 1, 2005
Published in print: Sep 2005
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