Field Application of an Innovative Bridge Scour Monitoring System with Fiber Bragg Grating Sensors
Publication: Journal of Aerospace Engineering
Volume 30, Issue 2
Abstract
Bridge scour has attracted enormous attention because of its catastrophic influence on bridge safety. In order to measure and monitor scour depth variations including deposition process, a scour monitoring system was developed in the authors’ previous study. An instrument with fiber Bragg grating (FBG) sensors was designed together with a reliable sensor-protection measure, of which the performance has been tested in the laboratory. In the present paper, the proposed system was applied on a field bridge with a critical scour history. Two test piles were manufactured and each was assembled with six standard 0.9 m-long (3 ft-long) segments. The two test piles were then installed beside two foundation piles of the field bridge, respectively, for long-term monitoring. Up until now, the measured sensor responses have verified the functionality of the proposed system. The estimated scour depths based on the sensor data to date match qualitatively well with the actual scour depths observed on the bridge site, and the concept of the scour monitoring design has been confirmed.
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Acknowledgments
The investigators are thankful to the Federal Highway Administration and the Louisiana Transportation Research Center (LTRC) for funding this project. The content presented reflects only the views of the writers who are responsible for the facts and the accuracy of the data presented herein. We would like to also express thankfulness to those who provided help during the development of these initial tasks of this research program. Special thanks go to the project manager Mr. Walid Alaywan, LADOTD.
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Published In
Journal of Aerospace Engineering
Volume 30 • Issue 2 • March 2017
Copyright
© 2016 American Society of Civil Engineers.
History
Received: Feb 22, 2015
Accepted: Apr 14, 2016
Published online: Jul 11, 2016
Discussion open until: Dec 11, 2016
Published in print: Mar 1, 2017
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