Journal of Nondestructive Evaluation

, Volume 29, Issue 1, pp 14–24 | Cite as

Ambient Vibration Tests of a Steel Footbridge

  • Alemdar Bayraktar
  • Ahmet Can Altunişik
  • Barış Sevim
  • Temel Türker


The paper presents analytical and experimental modal analysis of a steel footbridge for modal parameter identification. 3D finite element model is established for the steel footbridge based on the design drawing and modal parameters are obtained from deformed configurations. The field test is carried out by ambient vibration test under human walking excitation. Both Peak Picking method in the frequency domain and the Stochastic Subspace Identification method in the time domain are used for the output-only modal identification. From the study, good agreement is found between mode shapes, but some differences in the natural frequencies and analytical frequencies are bigger.

Ambient vibration test Footbridge Modal parameter Peak picking Stochastic subspace identification 


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Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  • Alemdar Bayraktar
    • 1
  • Ahmet Can Altunişik
    • 1
  • Barış Sevim
    • 1
  • Temel Türker
    • 1
  1. 1.Department of Civil EngineeringKaradeniz Technical UniversityTrabzonTurkey

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