Seismic Analysis of Precast Concrete Bridge Columns Connected with Grouted Splice Sleeve Connectors
Publication: Journal of Structural Engineering
Volume 143, Issue 2
Abstract
Reinforcing bar couplers are used in prefabricated bridge elements and bridge systems for accelerated bridge construction. Grouted splice sleeve connectors are used in bridge substructures because of the enhanced construction tolerances they offer. This paper presents a simplified modeling strategy for seismic assessment of precast bridge columns connected to precast footings using grouted splice sleeve connectors. A computational model was developed and validated using three half-scale bridge subassemblies tested to failure. Cyclic quasi-static loading was applied to two precast subassemblies and one cast-in-place specimen. The connectors were located in the footing, for the first precast alternative, and in the column end for the second precast alternative along with debonding of reinforcing bars in the footing. Force-based beam-column elements with fiber sections were used to construct the computational model based on plastic hinge weighted integration; the model included low-cycle fatigue and bond-slip. The proposed model was validated with the experiments through both local and global response comparisons. The results from the proposed computational model were found to be in good agreement with the experiments.
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Acknowledgments
The authors would like to acknowledge the financial support of the Utah, New York State, and Texas Departments of Transportation, the Mountain-Plains Consortium, and the Graduate School of the University of Utah. The authors wish to thank Dr. Lawrence D. Reaveley, Professor Emeritus at the University of Utah, for his invaluable input throughout the project. Special thanks are extended to Joel Parks, Dylan Brown, and Mark Bryant for their untiring efforts and support during the experiments. The authors are also grateful for the donation of materials by Splice Sleeve North America, and the assistance of Hanson Structural Precast (Forterra).
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Information
Published In
Journal of Structural Engineering
Volume 143 • Issue 2 • February 2017
Copyright
© 2016 American Society of Civil Engineers.
History
Received: Dec 3, 2015
Accepted: Aug 8, 2016
Published online: Sep 19, 2016
Published in print: Feb 1, 2017
Discussion open until: Feb 19, 2017
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