7 November 2012 Life-cycle monitoring for RC structural prestress loss utilizing optical fiber distributed sensors
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Proceedings Volume 8421, OFS2012 22nd International Conference on Optical Fiber Sensors; 8421A5 (2012); doi: 10.1117/12.975245
Event: OFS2012 22nd International Conference on Optical Fiber Sensor, 2012, Beijing, China
Abstract
Prestress loss is critical to impact the safety of prestressed reinforced concrete (RC) structures. Unfortunately, up to now, there are no qualified techniques to handle this issue. This paper proposes a life-cycle concept to monitor the full-scale prestress loss of RC beams utilizing optical fiber distributed sensors. And the optical fiber distributed sensors-based smart steel strands and load cell were configured. A prestressed RC beam with embedded smart steel strands was built to illustrate the above methodology. The prestress loss data obtained from the smart steel strand and load cell agrees well, and also matches that from the theoretical code.
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Chunguang Lan, Zhi Zhou, Jinping Ou, "Life-cycle monitoring for RC structural prestress loss utilizing optical fiber distributed sensors", Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 8421A5 (7 November 2012); doi: 10.1117/12.975245; https://doi.org/10.1117/12.975245
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KEYWORDS
Sensors

Fiber Bragg gratings

Optical fibers

Fiber optics sensors

Fiber reinforced polymers

Sensing systems

Computing systems

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