Monitoring of Scour Critical Bridges using Changes in the Natural Frequency of Vibration of Foundation Piles: A Preliminary Investigation

Luke J. Prendergast, Kenneth Gavin

Research output: Chapter in Book/Conference proceedings/Edited volumeChapterScientificpeer-review

1 Citation (Scopus)

Abstract

The highly publicized failure of the Malahide Viaduct Railway Bridge in Ireland in 2009 was attributed to erosion of the supporting soils, commonly referred to as foundation scour. This is a widespread geotechnical-structural problem that has been identified as the main cause of failure of bridges in the United States. Monitoring scour is of significant importance to ensure the continued safe operation of the aging bridge asset network. Most of the current monitoring regimes rely on expensive underwater instrumentation that is often subject to damage during times of flooding, when scour risk is at its highest. In this chapter, a novel scour monitoring approach based on dynamic measurement techniques is described. The investigation involves the mounting of accelerometers on the structure of interest, which may be used as a nonintrusive monitoring scheme above the waterline. A significant advantage of this method over traditional scour monitoring approaches is that the structure itself is used to monitor the scour damage.

Original languageEnglish
Title of host publicationMaterials and Infrastructures 1
PublisherBlackwell
Pages199-209
Number of pages11
ISBN (Electronic)9781119318583
ISBN (Print)9781786300294
DOIs
Publication statusPublished - 30 Jun 2016
Externally publishedYes

Keywords

  • Direct scour measurement
  • Fixed instruments
  • Malahide Viaduct Railway Bridge
  • Scour monitoring approach

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