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| Title: | Assessment of an instrumented reinforced-concrete bridge with fiber-reinforced-polymer strengthening |
| Author (s): | Watkins, Steve E. Fonda, James W. Nanni, Antonio |
| Department/Lab Affiliations: | Applied Optics Laboratory Center for Infrastructure Engineering Studies Civil, Architectural & Environmental Engineering Electrical and Computer Engineering University Transportation Center |
| Keywords: | bridges (structures) condition monitoring fiber optic sensors fibre reinforced plastics light interferometry strain measurement strain sensors |
| Subject Terms: | Fabry-Perot interferometers. Reinforced concrete. |
| Issue Date: | 2007 |
| Publisher: | Society of Photo-Optical Instrumentation Engineers SPIE |
| Citation: | Watkins, S.E., Fonda, J.W., and Nanni, A. “Assessment of an Instrumented Reinforced-Concrete Bridge with Fiber-Reinforced-Polymer Strengthening” Optical Engineering, vol. 46 (5), 051010, 2007. |
| Abstract: | Field instrumentation is investigated on an in-service highway bridge over a 2-year period. Extrinsic Fabry-Pérot interferometric (EFPI) strain sensors provide a permanent health-monitoring capability. The bridge is a reinforced-concrete (RC) structure that was repaired and strengthened using fiber-reinforced-polymer (FRP) wraps. A sensor network monitors the load-induced strain in the FRP reinforcement and the steel rebar. Colocated electrical resistance strain gauges and a finite element analysis are used for comparison. Both dynamic and static load characteristics are analyzed for a near-capacity truck. The fiber optic measurements are generally consistent with the comparison measurements and the analytical results; and they show no failure or degradation as opposed to the electrical resistance gauges. We demonstrate the implementation and the performance of in situ EFPI sensors in a long-term field environment. Embedded fiber optic sensors can provide the required information for the intelligent management of a transportation infrastructure. |
| Type: | Article - Journal text |
| In Title: | Optical Engineering |
| Copyright Notice: | This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder. No full text allowed FULL COPYRIGHT INFORMATION: |
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| title | Assessment of an instrumented reinforced-concrete bridge with fiber-reinforced-polymer strengthening |
| contributor.author | Watkins, Steve E. |
| contributor.author | Fonda, James W. |
| contributor.author | Nanni, Antonio |
| contributor.deptlab | Applied Optics Laboratory |
| contributor.deptlab | Center for Infrastructure Engineering Studies |
| contributor.deptlab | Civil, Architectural & Environmental Engineering |
| contributor.deptlab | Electrical and Computer Engineering |
| contributor.deptlab | University Transportation Center |
| contributor.sponsor | Center for Infrastructure Engineering Studies at UMR |
| contributor.sponsor | Missouri department of transportation |
| subject | bridges (structures) |
| subject | condition monitoring |
| subject | fiber optic sensors |
| subject | fibre reinforced plastics |
| subject | light interferometry |
| subject | strain measurement |
| subject | strain sensors |
| subject.LCSH | Fabry-Perot interferometers. |
| subject.LCSH | Reinforced concrete. |
| date.issued | 2007 |
| publisher | Society of Photo-Optical Instrumentation Engineers SPIE |
| identifier.citation | Watkins, S.E., Fonda, J.W., and Nanni, A. “Assessment of an Instrumented Reinforced-Concrete Bridge with Fiber-Reinforced-Polymer Strengthening” Optical Engineering, vol. 46 (5), 051010, 2007. |
| identifier.pub.URI | |
| description.abstract | Field instrumentation is investigated on an in-service highway bridge over a 2-year period. Extrinsic Fabry-Pérot interferometric (EFPI) strain sensors provide a permanent health-monitoring capability. The bridge is a reinforced-concrete (RC) structure that was repaired and strengthened using fiber-reinforced-polymer (FRP) wraps. A sensor network monitors the load-induced strain in the FRP reinforcement and the steel rebar. Colocated electrical resistance strain gauges and a finite element analysis are used for comparison. Both dynamic and static load characteristics are analyzed for a near-capacity truck. The fiber optic measurements are generally consistent with the comparison measurements and the analytical results; and they show no failure or degradation as opposed to the electrical resistance gauges. We demonstrate the implementation and the performance of in situ EFPI sensors in a long-term field environment. Embedded fiber optic sensors can provide the required information for the intelligent management of a transportation infrastructure. |
| type | Article - Journal |
| type.DCMIType | text |
| rights | This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder. |
| rights | No full text allowed |
| rights.URI | |
| relation.isPartOf | Optical Engineering |
| date.available | 2008-07-31T20:05:36Z |
| identifier.persist.URI |