Open Access Mini Review

Using Ambient Vibration Measurements (AVM) and Operational Modal Analysis (OMA) to Characterize Telecommunication Monopoles

Ghyslaine McClure1*, Samuel Jubinville-BaronM2, Jordann Jubinville-Baron3, Antoine Martineau4, Louis Savreux5 and Simon Humeau6

1Professor, Department of Civil Engineering and Applied Mechanics, McGill University, Canada

2,3Department of Civil Engineering and Applied Mechanics, McGill University, Canada

4,5,6McGill University visiting students from University of Angers, France

Corresponding Author

Received Date: August 09, 2019;  Published Date: September 03, 2019


This paper presents the dynamic characteristics of 20 steel telecommunications monopoles as extracted from ambient vibration measurements made directly on the base and on the structure itself at low height. Velocities are measured during a minimum of 30 minutes at each site with highly sensitive micrometers, synchronously at the different positions. The records are analysed using a frequency domain decomposition algorithm available in commercial software. Statistical analysis of the extracted results indicate that the fundamental natural frequencies could be identified with high precision (standard deviation less than 4%) while the corresponding total equivalent damping was less precise, with standard deviations between 6 and 28%. The low-cost, non-intrusive AVM tests are deemed appropriate to evaluate the vulnerability of telecommunications monopoles to wind-induced instabilities.

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