Journal article
Health Monitoring of Prestressing Tendons in Posttensioned Concrete Bridges
Transportation research record, v 2220(2220), pp 21-27
01 Jan 2011
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Currently 90% of bridges built in California are posttensioned box girder. In such structures, the steel tendons are the main load-carrying components. The loss of prestress, as well as the presence of defects or tendon breakage, can be catastrophic for the entire structure. No well-established method monitors prestressing tendons that can provide simultaneous information related to the presence of defects and the level of prestress in a continuous, real-time manner. If such a monitoring system were available, considerable savings would be achieved in bridge maintenance because repairs would be implemented in a timely manner without traffic disruptions. This paper presents a health-monitoring system for prestressing tendons in posttensioned structures of interest to the California Department of Transportation. Such a system uses guided ultrasonic waves and embedded sensors to measure the level of applied prestress and to detect defects at early growth stages simultaneously and in real time. The results of tests on a large-scale, single-tendon posttensioned joint specimen, subjected to multiple load cycles, are presented to validate the monitoring of prestress loads (through nonlinear ultrasonic probing) and the monitoring of damage progression and location (through acoustic emission techniques).
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Details
- Title
- Health Monitoring of Prestressing Tendons in Posttensioned Concrete Bridges
- Creators
- Salvatore Salamone - University at Buffalo, State University of New YorkIvan Bartoli - Department of Civil, Architectural, and Environmental Engineering, Drexel Intelligent Infrastructure Institute, 3141 Chestnut Street, Philadelphia, PA 19104.Robert Phillips - University of California San DiegoClaudio Nucera - University of California San DiegoFrancesco Lanza di Scalea - University of California San Diego
- Publication Details
- Transportation research record, v 2220(2220), pp 21-27
- Publisher
- Sage
- Number of pages
- 7
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Civil, Architectural, and Environmental Engineering
- Web of Science ID
- WOS:000295663400004
- Scopus ID
- 2-s2.0-80052761480
- Other Identifier
- 991020547435704721
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Engineering, Civil
- Transportation
- Transportation Science & Technology