Quasi-Static Testing of Posttensioned Nonemulative Column-Footing Connections for Bridge Piers
Publication: Journal of Bridge Engineering
Volume 21, Issue 6
Abstract
Accelerated bridge construction (ABC) is gaining popularity because it offers a number of advantages over conventional methods of construction. Prefabrication of bridge components for rapid on-site assembly is a highly effective ABC approach. Bridge substructures are traditionally cast in place with columns that form plastic hinges during earthquake events. Recent studies have explored new precast column-footing connections that either emulate the seismic performance of monolithic construction (emulative) or show improved seismic performance with the use of rocking connections (nonemulative). This paper presents findings from half-scale experimental testing of one emulative and two nonemulative precast column-footing connections. The two nonemulative connections were designed and detailed to sustain limited damage that can be rapidly and cost-effectively repaired using predefined methodologies. The tested connections showed promising results for use in regions of moderate to high seismicity; however, further developments of the proposed construction and repair methodologies are required for their full potential to be realized.
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Acknowledgments
The authors thank the New Zealand Ministry of Business, Innovation and Employment—Natural Hazard Research Platform for financially supporting this project as part of the research program Advanced Bridge Construction and Design (ABCD). The authors also thank Mustafa Mashal for his assistance in design and testing throughout project and technicians Gavin Keats and Russell McConchie for lab assistance.
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Information & Authors
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Published In
Journal of Bridge Engineering
Volume 21 • Issue 6 • June 2016
Copyright
© 2016 American Society of Civil Engineers.
History
Received: Mar 2, 2015
Accepted: Oct 5, 2015
Published online: Feb 3, 2016
Published in print: Jun 1, 2016
Discussion open until: Jul 3, 2016
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