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Vol. 55 (2014) No. 2 June n. 180


Lifetime Prediction of Towers with respect to Lateral and Longitudinal Wind Load

< Table of Contents for Vol. 55 (2014) No. 2 June n. 180
  • 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. 2 June n. 180
  • Pages: 117-126
  • Title: Lifetime Prediction of Towers with respect to Lateral and Longitudinal Wind Load
  • Author(s): S. Pospisil, S. Hracov, J. Lahodny, V Janata and S. Urushadze
  • Keywords: Lifetime prediction, towers, fatigue, wind load, spectrum
Abstract
The paper deals with the theoretical lifetime prediction of telecommunication towers and antenna’s cantilevers and the comparison with the measurements and numerical solution. A relatively simple and practical calculation method is presented. The wind load is described taking into account the probability distribution function of the mean velocity and corresponding mean mechanical stresses. The dynamic response of structure caused by the turbulence uses wind models for both longitudinal and lateral direction. Structural response takes into account the contribution of more vibration modes, measured or calculated if the structure is not accessible for any reason. Based upon this knowledge, the number of cycles for certain time period together with the residual life prediction of structure can be determined.

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