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Dynamic Brillouin Scattering–Based Condition Assessment of Cables in Cable-Stayed Bridges
Dynamic Brillouin Scattering–Based Condition Assessment of Cables in Cable-Stayed Bridges
- Source :
- Journal of Bridge Engineering. 22
- Publication Year :
- 2017
- Publisher :
- American Society of Civil Engineers (ASCE), 2017.
-
Abstract
- A method for structural health monitoring of cable-stayed bridges based on the dynamic distributed sensing of bridge deck strains is introduced in this article. The objective is to detect the location and the magnitude of the cables that have totally or partially lost their tensile load-carrying capacities. Dynamic sensing provides a realistic approach for condition assessment of the bridge under operational conditions. A Brillouin scattering optical time domain analysis (BOTDA) fiber-optic sensor was used to monitor the distributed strain in the deck of a scaled model cable-stayed bridge in the laboratory. The formulations developed in the present study take advantage of the dynamic distributed sensing capability of the BOTDA in amplitude transfer (AT) mode for the establishment of a relationship between the redistribution of deck strains and the tension loss in the individual cables of cable-stayed bridges. The experimental program involved single cable and multicable damage scenarios. The appli...
- Subjects :
- Engineering
business.industry
020101 civil engineering
02 engineering and technology
Building and Construction
Structural engineering
Condition assessment
0201 civil engineering
Deck
Bridge deck
020210 optoelectronics & photonics
Fiber optic sensor
Brillouin scattering
0202 electrical engineering, electronic engineering, information engineering
Time domain
Cable stayed
Structural health monitoring
business
Civil and Structural Engineering
Subjects
Details
- ISSN :
- 19435592 and 10840702
- Volume :
- 22
- Database :
- OpenAIRE
- Journal :
- Journal of Bridge Engineering
- Accession number :
- edsair.doi...........84d72510c6644804055b5495c00d8319
- Full Text :
- https://doi.org/10.1061/(asce)be.1943-5592.0001010