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Proceedings Article

Monitoring of a steel incrementally launched bridge construction with strain and temperature FBGs sensors

[+] Author Affiliations
Antonio Bueno, Benjamín Torres, David Barrera, Pedro Calderón, Salvador Sales

Univ. Politécnica de Valencia (Spain)

Proc. SPIE 7726, Optical Sensing and Detection, 772620 (May 13, 2010); doi:10.1117/12.854575
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From Conference Volume 7726

  • Optical Sensing and Detection
  • Francis Berghmans; Anna G. Mignani; Chris A. van Hoof
  • Brussels, Belgium | April 12, 2010

abstract

We present in this paper the results of monitoring the construction process of a steel incrementally launched bridge located at the Kadagua Valley in Bilbao (Spain) with FBG sensors. The installation of FBG strain and temperature sensors was done in order to obtain deformation and temperature variations during the launching operation. The deflection recovery process was also monitored. The setup carried out in the sensors installation process consists of five optical channels (one for each cross section monitored) and a multiplexed structure of nine strain sensor in each optical channel. Temperature sensors were also installed in order to measure temperature variation of the steel structure but also for thermal compensation for the FBG strain sensors. The installation of the optical sensors is explained in detail including cleaning, bonding and connection of the almost fifty sensors installed in this structure. We also are going to explain the behaviour of the steel structure by presenting several figures showing the strain values for each sensor taken in real time during the launching of the bridge.

© (2010) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Antonio Bueno ; Benjamín Torres ; David Barrera ; Pedro Calderón and Salvador Sales
"Monitoring of a steel incrementally launched bridge construction with strain and temperature FBGs sensors", Proc. SPIE 7726, Optical Sensing and Detection, 772620 (May 13, 2010); doi:10.1117/12.854575; http://dx.doi.org/10.1117/12.854575


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