Bridge Pier Scour Measurement by Means of Bragg Grating Arrays: Laboratory Tests and Field Applications

  • F. Ballio
  • A. Cigada
  • G. Crotti
  • F. Inzoli
  • S. Manzoni
Conference paper
Part of the Conference Proceedings of the Society for Experimental Mechanics Series book series (CPSEMS)


This paper deals with a new method to measure scour level at bridge piers. The proposed technique is based on an array of Bragg grating temperature sensors, heated by an electrical circuit. The Bragg gratings in water sense a lower temperature than those buried in the river bed, because of the different heat scattering principles in the two situations. Furthermore the response of each sensor is slower if it is buried in the bed, with respect to the case it is in water. The paper presents laboratory tests, showing the method effectiveness and reliability, and it explains the advantages with respect to other more traditional methodologies to measure scour level. Finally, the first field application is presented.


Steady State Temperature Bridge Pier Bragg Wavelength Radio Frequency Interference Grating Pitch 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer Science + Business Media, LLC 2011

Authors and Affiliations

  • F. Ballio
    • 1
  • A. Cigada
    • 2
  • G. Crotti
    • 1
  • F. Inzoli
    • 3
  • S. Manzoni
    • 2
  1. 1.D.I.I.A.R.Politecnico di MilanoMilanItaly
  2. 2.Department of MechanicsPolitecnico di MilanoMilanItaly
  3. 3.Department of EnergyPolitecnico di MilanoMilanItaly

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