Distributed fiber optic sensors for monitoring reinforced concrete piles using Brillouin scattering

N. de Battista; C. Kechavarzi; K. Soga

doi:10.1117/12.2236633

30 May 2016 Distributed fiber optic sensors for monitoring reinforced concrete piles using Brillouin scattering

N. de Battista, C. Kechavarzi, K. Soga

Proceedings Volume 9916, Sixth European Workshop on Optical Fibre Sensors; 99160U (2016) https://doi.org/10.1117/12.2236633
Event: Sixth European Workshop on Optical Fibre Sensors (EWOFS'2016), 2016, Limerick, Ireland

Abstract

In this paper we report on advances made in the installation and use of distributed fiber optic sensors to monitor reinforced concrete piles subjected to static load tests. Eight concrete test piles, at three construction sites in London, have recently been instrumented with embedded DFOS. The Brillouin optical time domain reflectometry (BOTDR) technique was used to measure the changes in internal strain and temperature of the piles, during concrete curing and during load testing. These data were used to assess the quality of the pile and derive the load capacity parameters to be used in the foundation design of tall buildings which are to be erected on these sites. The measurements obtained from the DFOS system agreed well with the measurements taken simultaneously using conventional point sensors embedded in the piles. Whereas the conventional sensors only provided measurements at a small number of locations within the piles, the DFOS system made it possible to record the complete strain / temperature profiles along the length of the piles.

Citation Download Citation

N. de Battista, C. Kechavarzi, and K. Soga "Distributed fiber optic sensors for monitoring reinforced concrete piles using Brillouin scattering", Proc. SPIE 9916, Sixth European Workshop on Optical Fibre Sensors, 99160U (30 May 2016); https://doi.org/10.1117/12.2236633

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available