Early-Age Cracking in High Performance Concrete Decks of a Curved Steel Girder Bridge
Publication: Journal of Aerospace Engineering
Volume 30, Issue 2
Abstract
Highway flyover bridges in New Jersey experienced extensive early-age cracking on the high performance concrete deck recently. There were transverse cracks observed predominantly in the positive moment regions and spider cracks concentrated in the negative moment region over the box beam. A typical two-span curved continuous bridge with high performance concrete (HPC) deck, steel girders and integral box-beam was selected to identify factors that affect early-age HPC deck cracking so as to mitigate the cracking issues on existing concrete continuous bridges. Extensive field tests were performed and various structural responses were collected for model calibration and structural analysis. Cracking issues due to effects of vertical temperature differentials, staging, shrinkage, settlement, tilt of piers, dead load, live load, etc., were quantitatively investigated and summarized through parametric study. Of prime interest has been the identification of the contributions of various effects on deck cracks. The present study provides better understanding of the behavior of curved composite bridges, which can be efficiently used to reduce the risk of cracking at early ages.
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Acknowledgments
The authors would like to thank William Wilson and Kevin Healey (currently with GPI) from the New Jersey Turnpike Authority for their support and guidance throughout the period of this study. The technical assistance of Chaekuk Na, Peng Lou, Miguel Beltran, and Adi Abu-Obeida are gratefully acknowledged. The support for the first author by the Natural Science Foundation of China (Grant No. 51508405), the Ministry of Transport of the People’s Republic of China (Grant No. 2015318J38230), and the Science and Technology Commission of Shanghai Municipality (Grant No. 14ZR1443200) is greatly acknowledged.
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Information
Published In
Journal of Aerospace Engineering
Volume 30 • Issue 2 • March 2017
Copyright
© 2016 American Society of Civil Engineers.
History
Received: Feb 4, 2015
Accepted: Oct 15, 2015
Published online: Jan 27, 2016
Discussion open until: Jun 27, 2016
Published in print: Mar 1, 2017
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