Smart Sensing of PSC Girders Using a PC Strand with a Built-in Optical Fiber Sensor

被引：8

作者：

Kim, Sung Tae ^{[1
]}

Yoon, Hyejin ^{[1
]}

Park, Young-Hwan ^{[1
]}

Jin, Seung-Seop ^{[1
]}

Shin, Soobong ^{[2
]}

Yoon, Suk-Min ^{[3
]}

机构：

[1] Korea Inst Civil Engn & Bldg Technol, Dept Infrastruct Safety Res, Goyang 10223, South Korea

[2] Inha Univ, Dept Civil Engn, Incheon 22212, South Korea

[3] Towoong E&C, R&D Ctr, Seoul 06222, South Korea

来源：

APPLIED SCIENCES-BASEL | 2021年 / 11卷 / 01期

关键词：

bridge; girder; prestressed concrete; PC strand; optical sensor; prestressing force management; STEEL STRAND;

D O I：

10.3390/app11010359

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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.

引用

页码：1 / 14

页数：14