On-Site Acoustic-Emission Monitoring for Assessment of a Prestressed Concrete Double-Tee-Beam Bridge without Plans
Publication: Journal of Performance of Constructed Facilities
Volume 30, Issue 4
Abstract
Acoustic emission was used in this study to assess the condition of a simple-span, prestressed concrete bridge located in southern New Mexico during a proof test. The 40-year-old bridge is county owned and no design plans were available. Acoustic emission (AE) data were collected under several loading conditions from two groups of sensors placed near the support and midspan of an interior double-tee beam. Strain measurements were also taken at midspan and used to direct the test and determine the maximum loading. AE data analysis methods were applied to evaluate the response of the structure under increasing loads and to develop crack maps. Analysis of the AE data showed signs of internal beam microcrack development near the supports (shear region) as well as in the midspan (moment region). The AE data indicated that damage in the form of crack growth was more prevalent in the region near the supports.
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Acknowledgments
This project was funded by the New Mexico DOT, grant number NM13STR01. The support is gratefully acknowledged.
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Information & Authors
Information
Published In
Journal of Performance of Constructed Facilities
Volume 30 • Issue 4 • August 2016
Copyright
© 2015 American Society of Civil Engineers.
History
Received: Nov 28, 2014
Accepted: May 15, 2015
Published online: Jul 15, 2015
Discussion open until: Dec 15, 2015
Published in print: Aug 1, 2016
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