Damage detection using neutral axis and prestressing force distribution

Hiba Abdel-Jaber, Dorotea Sigurdardottir, Branko Glisic

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Identification (i.e., detection, localization and quantification) of unusual structural behaviors of bridges represents an important aim of structural health monitoring (SHM). This paper proposes an SHM methodology based on loose structural analysis and on strain and temperature SHM data acquired by long-gauge fiber optic sensors. Pairs of long-gauge sensors are placed at key locations along a beam-like structure parallel to the centroid line. The position of neutral axis is evaluated from strain measurements using a novel algorithm. Change in the position of the neutral axis is then used to identify unusual behaviors that result in change in the position of the centroid of stiffness, such as partial loss of stiffness (e.g. damage). Effectiveness of prestressing force transfer is evaluated with another novel algorithm. The methodology was applied to two structures and successfully identified unusual structural behaviors.

Original languageEnglish (US)
Title of host publicationIABSE Conference, Geneva 2015
Subtitle of host publicationStructural Engineering: Providing Solutions to Global Challenges - Report
PublisherInternational Association for Bridge and Structural Engineering (IABSE)
Pages1360-1367
Number of pages8
ISBN (Electronic)9783857481406
StatePublished - Jan 1 2015
EventIABSE Conference, Geneva 2015: Structural Engineering: Providing Solutions to Global Challenges - Geneva, Switzerland
Duration: Sep 23 2015Sep 25 2015

Publication series

NameIABSE Conference, Geneva 2015: Structural Engineering: Providing Solutions to Global Challenges - Report

Other

OtherIABSE Conference, Geneva 2015: Structural Engineering: Providing Solutions to Global Challenges
CountrySwitzerland
CityGeneva
Period9/23/159/25/15

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Building and Construction

Keywords

  • Damage detection
  • Fiber optic sensors
  • Long-gauge
  • Neutral axis
  • Prestressed concrete
  • Strain
  • Structural health monitoring

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  • Cite this

    Abdel-Jaber, H., Sigurdardottir, D., & Glisic, B. (2015). Damage detection using neutral axis and prestressing force distribution. In IABSE Conference, Geneva 2015: Structural Engineering: Providing Solutions to Global Challenges - Report (pp. 1360-1367). (IABSE Conference, Geneva 2015: Structural Engineering: Providing Solutions to Global Challenges - Report). International Association for Bridge and Structural Engineering (IABSE).