Effect of vehicle velocity on exciting the lateral dynamic response of two-span integral bridges

Luke Prendergast, Kenneth Gavin, David Hester

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

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Abstract

Vibration-based Structural Health Monitoring (SHM) is an area of ongoing research and has received much attention from researchers in recent years. Online damage detection methods for bridges rely on placing sensors on the structure to detect anomalies in measured parameters such as acceleration, frequency or displacement among others. Changes in these parameters can be used to infer the presence of damage such as cracking in bridge beams, foundation scour etc. These methods mostly rely on using the signals arising on a bridge from ambient traffic or environmental loading. For foundation scour detection purposes, the lateral response of a bridge is of particular interest in that this has been shown to be particularly sensitive to the scour phenomenon. Vehicle-Bridge Interaction (VBI) effects can have a significant influence on the condition of output vibrations from a bridge element. In this paper, the effect of vehicle travelling velocity on the lateral response of a typical highway two-span integral bridge is investigated. It is shown that depending on the velocity of the vehicle relative to the oscillatory period of the bridge it traverses, the bridge’s dynamic response is either amplified or diminished by varying degrees. This phenomenon could influence the accuracy of a particular damage detection method relying on output system vibrations to infer damage.
Original languageEnglish
Title of host publicationProceedings of Civil Engineering Research in Ireland 2016
Subtitle of host publication29th-30th August, Galway, Ireland
Number of pages6
Publication statusPublished - 2016
Externally publishedYes
EventThe Second Civil Engineering Research in Ireland Conference 2016 - National University of Ireland, Galway, Ireland
Duration: 29 Aug 201630 Aug 2016

Conference

ConferenceThe Second Civil Engineering Research in Ireland Conference 2016
Abbreviated titleCERI 2016
CountryIreland
CityGalway
Period29/08/1630/08/16

Keywords

  • Bridge Dynamics
  • Damage Detection
  • Vibration
  • SHM

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    Prendergast, L., Gavin, K., & Hester, D. (2016). Effect of vehicle velocity on exciting the lateral dynamic response of two-span integral bridges. In Proceedings of Civil Engineering Research in Ireland 2016: 29th-30th August, Galway, Ireland