Rehabilitation and Retrofitting of a Multispan Simply-Supported Adjacent Box Girder Bridge into a Jointless and Continuous Structure
Publication: Journal of Performance of Constructed Facilities
Volume 32, Issue 1
Abstract
The widely-utilized multispan simply-supported adjacent (side-by-side) box girder bridges often suffer from problems of deterioration attributable to transverse cracking in link slabs between spans, malfunctioning expansion joints, and longitudinal cracks between adjacent girders. Such problems can degrade the functionality, durability or even safety of the bridge over time, depending on the environmental exposure conditions. This paper discusses an approach taken to rehabilitate the Shili Bridge by eliminating expansion joints and retrofitting the structure from simply-supported box girders into a continuous bridge. Condition assessments were performed before retrofitting. In addition, several design options and construction procedures were considered and analyzed. Static and dynamic load tests were carried out after the completion of rehabilitation. The lessons learned in this project are presented and discussed. This practical and novel methodology is a step forward toward improving safety, sustainability, reliability, and quality of such existing bridges in China and elsewhere.
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Acknowledgments
The authors appreciate the support from the Natural Science Foundation of China through Grant Nos. 51278126, 51578161, and 51778147 and the Zhejiang Provincial Natural Science Fund (LY17E080022).
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Information & Authors
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Published In
Journal of Performance of Constructed Facilities
Volume 32 • Issue 1 • February 2018
Copyright
©2017 American Society of Civil Engineers.
History
Received: Dec 20, 2016
Accepted: Jun 13, 2017
Published online: Oct 24, 2017
Published in print: Feb 1, 2018
Discussion open until: Mar 24, 2018
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