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Fiber Bragg Grating sensors for arch bridge suspender health monitoring

  • Dongsheng Li*
  • , Zhi Zhou
  • , Nianchun Deng
  • , Jinping Ou
  • *Corresponding author for this work
  • School of Civil Engineering, Harbin Institute of Technology

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Firstly, Wavelength shift of Fiber Bragg Grating (FBG) sensors that monitor the arch bridge suspender tension due to strain or temperature change has been studied theoretically, and theirs sensitivity coefficient is gotten through calibrating experiment. Secondly, the FBG strain and temperature sensors have been successfully installed in some key suspenders of Sichuan Ebian Dadu river arch bridge. Techniques of installation of FBG sensors and suspender repairing have been explored in-service arch bridge. Thirdly,the change of suspender strain and temperature, and the effect of the same loading to different length suspender have been monitored with the FBG sensors. The monitoring results show that the FBG sensors can monitor correctly the change of traffic loading and temperature, possible fatigue damages, FBG sensors are more adaptive to long-term structural health monitoring than the electric strain gauges.

Original languageEnglish
Title of host publicationFundamental Problems of Optoelectronics and Microelectronics III
DOIs
StatePublished - 2007
Externally publishedYes
EventFundamental Problems of Optoelectronics and Microelectronics III - Harbin, China
Duration: 12 Sep 200614 Sep 2006

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume6595 II
ISSN (Print)0277-786X

Conference

ConferenceFundamental Problems of Optoelectronics and Microelectronics III
Country/TerritoryChina
CityHarbin
Period12/09/0614/09/06

Keywords

  • Arch bridge suspender
  • FBG
  • Monitoring
  • Strain
  • Temperature

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