Cyclic Load Tests on Self-Centering Concrete Pier with External Dissipators and Enhanced Durability
Publication: Journal of Structural Engineering
Volume 142, Issue 1
Abstract
A precast segmental pier using posttensioning technique has become a desirable candidate to realize rapid, environment-friendly bridge construction and minimal residual deformation. To avoid structural corrosion and to facilitate the replacement of energy dissipators (EDs), a self-centering precast concrete (SCPC) pier with external EDs and enhanced durability is proposed and experimentally evaluated. In this study, the self-centering capacity is provided through posttensioned basalt fiber–reinforced polymer (BFRP) tendons, and the bottom of the pier is encased in a glass fiber–reinforced polymer (GFRP) jacket so as to mitigate concrete spalling or crushing as the pier rocks. Aluminum bars with modified material properties are used as external EDs, in which the weakened part is filled in a confining tube with epoxy. Fifteen cyclic load tests with the maximum drift of 4% were conducted on three SCPC piers and one monolithic pier, and the influence of various design parameters on the pier behavior is discussed.
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Acknowledgments
The support from the National Natural Science Foundation of China under Grant No. 51378107 and the Fok Ying Tung Education Foundation under Grant No. 131074 is gratefully acknowledged. The authors would like to thank Prof. Richard Sause at Lehigh University for his advices on this study.
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Published In
Journal of Structural Engineering
Volume 142 • Issue 1 • January 2016
Copyright
© 2015 American Society of Civil Engineers.
History
Received: Sep 25, 2014
Accepted: May 12, 2015
Published online: Jun 22, 2015
Discussion open until: Nov 22, 2015
Published in print: Jan 1, 2016
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