Abstract
Many existing bridge structures experience much more significant loads and load cycles than were anticipated when the bridges were originally designed. An effective way to increase the load capacity and fatigue resistance of bridge structures with steel girders and a noncomposite concrete deck is to retrofit the structure with shear connectors to create a composite girder–deck structure. This article presents a state-of-the-art study of postinstalled shear connectors in general and coiled spring connectors in particular. The strengthening method is described, together with experiences from real bridge strengthening projects and a study of load capacity and structural behavior.
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Acknowledgments
The research leading to these results received funding from the European Union’s Research Fund for Coal and Steel (RFCS) research program under Grant Agreement RFSR-CT-2015-00025. Financial support was also provided by the Swedish, Finnish, and Norwegian transport administrations; SBUF; the Nordic Road Association; and the Ramboll Foundation.
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Published In
Practice Periodical on Structural Design and Construction
Volume 24 • Issue 1 • February 2019
Copyright
© 2018 American Society of Civil Engineers.
History
Received: Feb 22, 2018
Accepted: May 28, 2018
Published online: Nov 1, 2018
Published in print: Feb 1, 2019
Discussion open until: Apr 1, 2019
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