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Smart Sensing of PSC Girders Using a PC Strand with a Built-in Optical Fiber Sensor
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Smart Sensing of PSC Girders Using a PC Strand with a Built-in Optical Fiber Sensor
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Journal Article
Smart Sensing of PSC Girders Using a PC Strand with a Built-in Optical Fiber Sensor
2021
Overview
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.
Publisher
MDPI AG
Subject
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