Proceedings of the Computational Structural Engineering Institute Conference (한국전산구조공학회:학술대회논문집)
- 2008.04a
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- Pages.133-138
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- 2008
A Methodology for Monitoring Prestressed Force of Bridges Using OFS-embedded Strand
광섬유센서가 내장된 강연선을 이용한 교량의 장력 모니터링 방법
Abstract
This study proposes a novel method for in-service evaluation of force in an external prestressing 7-wire tendon which is employed for retrofitting bridge superstructure. For this propose, a smart strand 7.0m long whose king wire is replaced by a steel tube and the FBG sensor, is developed. Performance of the strand is demonstrated through loading-unloading tests for a RC T-shaped beam 6.4m long. Finally, a couple of test results are presented to discuss effect of temperature change in the FBG sensor.