Seismic Performance of Precast Bridge Columns with Socket and Pocket Connections Based on Quasi-Static Cyclic Tests: Experimental and Numerical Study
Publication: Journal of Bridge Engineering
Volume 24, Issue 11
Abstract
In this study, four 1/3-scale bridge column specimens were investigated both experimentally and numerically. The specimens consisted of two cast-in-place (CIP) reference columns and two precast columns for the study of socket and pocket connections, respectively. The precast columns were designed based on the actual application of precast urban viaducts in Shanghai, China. Therefore, this study investigated and verified the seismic performance of these connection approaches. Based on the test results of the hysteretic behavior and derived indexes, both columns with socket and pocket connections have shown equivalent seismic performances to their CIP references. The differences between precast and CIP columns were within 15% for all indexes, and the damage development and failure mechanism were also similar. Finite-element models were created with displacement analyser (DIANA) and calibrated with the test data. Bond-slip behavior with the built-in embedded reinforcement element, concrete cracking with tension softening, and material nonlinearity were considered. Under monotonic pushover analysis, the load-displacement curves were in good agreement with the backbone curves of the test results.
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Acknowledgments
Financial support for this study was provided by the National Natural Science Foundation of China under Award No. 51778470.
Supplemental Data
Figs. S1–S14 are available online in the ASCE Library (www.ascelibrary.org).
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Published In
Journal of Bridge Engineering
Volume 24 • Issue 11 • November 2019
Copyright
© 2019 American Society of Civil Engineers.
History
Received: Feb 28, 2018
Accepted: Apr 2, 2019
Published online: Sep 5, 2019
Published in print: Nov 1, 2019
Discussion open until: Feb 5, 2020
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