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Vol. 55 (2014) No. 3 September n. 181


Validation of Seismic Response Simulation of a Guyed Telecommunication Mast Using Ambient Vibration Measurements

< Table of Contents for Vol. 55 (2014) No. 3 September n. 181
  • Journal Name: Journal of the International Association for Shell and Spatial Structures (J. IASS)
  • ISSN: (Electronic Version) 1996-9015
  • ISSN: (Print Version) 1028-365X
  • Issue: Vol. 55 (2014) No. 3 September n. 181
  • Pages: 143-154
  • Title: Validation of Seismic Response Simulation of a Guyed Telecommunication Mast Using Ambient Vibration Measurements
  • Author(s): M.G. Osgoie, G. McClure and S.A.G. Oskoei
  • Keywords: Telecommunication tower, Dynamic analysis, Guy cable tension, Ambient vibration testing
Abstract
Many telecommunication structures are designated as post-critical facilities that must remain operational after a design-level earthquake has struck. Although several researchers have studied the seismic response of towers and masts under earthquakes, most published works are numerical studies without experimental validation. To illustrate how this lack of validation can be resolved in practice, a 111.2-m tall mast owned by Hydro-Québec and located in St. Hyacinthe, Québec, Canada was considered to conduct ambient vibration measurements (AVM). The numerical model of the structure was adjusted using cable tensions based on AVM results and the first few natural frequencies of the mast could be simulated with good accuracy from the adjusted models. Earthquake simulations on the “verified” model highlight the influence of guy cable tension variability on the structure’s seismic response.

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