Smart Sensing of PSC Girders Using a PC Strand with a Built-in Optical Fiber Sensor
Source abstract
Abstract
This paper presents a multi-functional strand capable of introducing prestressing force in prestressed concrete (PSC) girders and sensing their static and dynamic behavior as well. This innovative strand is developed by replacing the core steel wire of the strand used in PSC structures with a carbon fiber-reinforced polymer (CFRP) wire with a built-in optical Fiber Bragg Grating (FBG) sensor. A full-scale girder specimen was fabricated by applying this multi-function strand to check the possibility of tracking the change of prestressing force at each construction stage. Moreover, dynamic data could be secured during dynamic loading tests without installing accelerometers and made it possible to obtain the natural frequencies of the structure. The results verified the capability to effectively manage the prestressing force in the PSC bridge structure by applying the PC strand with a built-in optical sensor known for its outstanding practicability and durability.
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Research context
OpenAlex topics: Advanced Fiber Optic Sensors · Railway Engineering and Dynamics · Structural Health Monitoring Techniques
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Infrastructure Safety Research, Korea Institute of Civil Engineering and Building Technology, Goyang 10223, Korea
Department of Civil Engineering, Inha University, Incheon 22212, Korea
R and D Center, Towoong E and C, Seoul 06222, Korea
Funding
Korea Institute of Civil Engineering and Building Technology
References (18)
Show source-provided references
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