Monitoring of Bridge Dynamics by Radar Interferometry

Authors

  • Imrich Lipták Slovak University of Technology, Faculty of Civil Engineering, Radlinského 11, 81368 Bratislava, Slovakia
  • Ján Erdélyi Slovak University of Technology, Faculty of Civil Engineering, Radlinského 11, 81368 Bratislava, Slovakia
  • Peter Kyrinovič Slovak University of Technology, Faculty of Civil Engineering, Radlinského 11, 81368 Bratislava, Slovakia
  • Alojz Kopáčik Slovak University of Technology, Faculty of Civil Engineering, Radlinského 11, 81368 Bratislava, Slovakia

DOI:

https://doi.org/10.14311/gi.12.2

Keywords:

bridge, dynamic deformation, spectral analysis, ground-based radar

Abstract

The paper presents the possibilities of radar interferometry in dynamic deformationmonitoring of bridge structures. The technology is increasingly used for this purposethanks to high accuracy of realized measurements and possibility to measure deformationat multiple places of the monitored structure. High frequency of realized measurements (upto 200 Hz) enables to determine the most of significant vibration modes of bridgedeformation. This technology is presented on real case study of the cycle bridge over theriver Morava near to Bratislava (Slovak republic). A spectral analysis of vibrationfrequencies is performed by discrete Fourier transformation. The evaluation of correctnessof the obtained deformation is performed by comparison of the results with accelerometerand total station measurements and FEM (Finite Element Method) model of the structure.

References

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KOPÁČIK, A. - LIPTÁK, I. - KYRINOVI , P. - ERDÉLYI, J. (2013): Monitoring of a

cycling bridge using accelerometers and ground-based radar - a case study. In 2nd Joint International Symposium on Deformation Monitoring : Nottingham, 9.-11.9.2013. Nottingham : University of Nottingham, 2013. 8 p.

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Published

2014-06-03

Issue

Vol. 12 (2014)

Section

Articles

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