CUED Publications database

Distributed optical fiber strain sensing in a secant piled wall

Mohamad, H and Bennett, PJ and Soga, K and Klar, A and Pellow, A (2007) Distributed optical fiber strain sensing in a secant piled wall. In: UNSPECIFIED p. 81..

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Abstract

An optical fiber strain sensing technique, based on Brillouin Optical Time Domain Reflectometry (BOTDR), was used to obtain the full deformation profile of a secant pile wall during construction of an adjacent basement in London. Details of the installation of sensors as well as data processing are described. By installing optical fiber down opposite sides of the pile, the distributed strain profiles obtained can be used to give both the axial and lateral movements along the pile. Measurements obtained from the BOTDR were found in good agreement with inclinometer data from the adjacent piles. The relative merits of the two different techniques are discussed. © 2007 ASCE.

Item Type: Conference or Workshop Item (UNSPECIFIED)
Subjects: UNSPECIFIED
Divisions: Div D > Geotechnical and Environmental
Depositing User: Cron Job
Date Deposited: 07 Mar 2014 12:13
Last Modified: 27 Nov 2014 19:21
DOI: 10.1061/40940(307)81