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Proceedings Paper

Monitoring of a steel incrementally launched bridge construction with strain and temperature FBGs sensors
Author(s): Antonio Bueno; Benjamín Torres; David Barrera; Pedro Calderón; Salvador Sales
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Paper 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.

Paper Details

Date Published: 13 May 2010
PDF: 8 pages
Proc. SPIE 7726, Optical Sensing and Detection, 772620 (13 May 2010);
Show Author Affiliations
Antonio Bueno, Univ. Politécnica de Valencia (Spain)
Benjamín Torres, Univ. Politécnica de Valencia (Spain)
David Barrera, Univ. Politécnica de Valencia (Spain)
Pedro Calderón, Univ. Politécnica de Valencia (Spain)
Salvador Sales, Univ. Politécnica de Valencia (Spain)

Published in SPIE Proceedings Vol. 7726:
Optical Sensing and Detection
Francis Berghmans; Anna Grazia Mignani; Chris A. van Hoof, Editor(s)

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