Abstract
Deterioration of girder ends has emerged as a major issue for steel bridges with deck joints. The goal of this study was to evaluate the full-scale performance of a newly proposed repair method for steel girder ends with local corrosion damage and section loss over the bearings. The repair consists of welding shear studs to the undamaged portion of the web and encasing the corrosion damage in ultrahigh-performance concrete (UHPC). The composite action between the studs and the UHPC allows the force to bypass the corroded region of the web and stiffener plates, restoring the end bearing capacity of the girder. Four full-scale experiments were conducted on unrepaired and repaired girders with severe section loss. The objectives of the study were to (1) assess the structural performance of the repair, (2) identify the best design practices, and (3) confirm the feasibility of implementing the repair under service loads. The experimental results showed that the proposed repair design successfully restored the original design capacity of a girder.
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Acknowledgments
This paper presented results from a study funded by the Connecticut Department of Transportation and the Federal Highway Administration under Project SPR-2295. The authors would like to thank all of the employees at the Connecticut Department of Transportation for their strong support and advice through the course of the project, especially Rabih Barakat, Timothy Fields, Bao Chuong, Anne-Marie McDonnell, Mary Baker, Brad Overturf, Edgardo Block, Flavia Pereira, Andrew Cardinali, and Dobieslawa Kania. The Connecticut Transportation Institute is thanked for managing the project and funds. The authors would like to thank our industry sponsors, especially Infra-Metals, United Steel, Lafarge-Holcim, and RJ Watson. The support of Dr. Kay Wille, Michael Culmo, Dr. Kevin Zmetra, Dr. Dominic Kruszewski, Alexandra Hain, Angela Lanning, Caitlin O’Brien, Maral Dorri, Michael Harris, Michael Makwinski, Nick Assard, and Jordan Vogt is greatly appreciated.
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Published In
Journal of Bridge Engineering
Volume 25 • Issue 4 • April 2020
Copyright
©2020 American Society of Civil Engineers.
History
Received: Mar 26, 2019
Accepted: Oct 17, 2019
Published online: Jan 22, 2020
Published in print: Apr 1, 2020
Discussion open until: Jun 22, 2020
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