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Analysis of fiber-optic strain-monitoring data from a prestressed concrete bridge

Research output: Contribution to journalArticle

Original languageEnglish
Article number05017002
Number of pages14
JournalJournal of Bridge Engineering
Volume22
Issue number5
Early online date3 Feb 2017
DOIs
DateAccepted/In press - 4 Aug 2016
DateE-pub ahead of print - 3 Feb 2017
DatePublished (current) - May 2017

Abstract

This paper presents data from fiber-optic strain monitoring of the Nine Wells Bridge, which is a three-span, pretensioned, prestressed concrete beam -and-slab bridge located in Cambridgeshire in the United Kingdom. The original deployment at the site and the challenges associated with collecting distributed strain data using the Brillouin optical time domain reflectometry (BOTDR) technique are described. In particular, construction and deployment issues of fiber robustness and temperature effects are highlighted. The challenges of interpreting the collected data as well as the potential value of information that may be obtained arediscussed. Challenges involved with relating measurements to the expected levels of prestress, including the effects due to debonding, creep, and shrinkage, are discussed and analyzed. This paper provides an opportunity to study whether two commonly used models for creep and shrinkage, adequately model data collected in field conditions.

    Research areas

  • Brillouin optical time domain reflectometry (BOTDR), Concrete creep, Concrete shrinkage, Prestressed concrete, Strain measurement, Structural health monitoring

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  • Full-text PDF (final published version)

    Rights statement: This is the final published version of the article (version of record). It first appeared online via ASCE at http://ascelibrary.org/doi/abs/10.1061/(ASCE)BE.1943-5592.0000996. Please refer to any applicable terms of use of the publisher.

    Final published version, 4 MB, PDF document

    Licence: CC BY

  • Supplementary information PDF

    Rights statement: This is the final published version of the article (version of record). It first appeared online via ASCE at http://ascelibrary.org/doi/abs/10.1061/(ASCE)BE.1943-5592.0000996. Please refer to any applicable terms of use of the publisher.

    Final published version, 405 KB, PDF document

    Licence: CC BY

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