Engineering Mechanics

International Conference

Proceedings Vol. 18 (2012)


ENGINEERING MECHANICS 2012

18th INTERNATIONAL CONFERENCE
May 14 – 17, 2012, Svratka, Czech Republic
;
Editors: Jiří Náprstek and Cyril Fischer

Copyright © 2012 Institute of Theoretical and Applied Mechanics, Academy of Sciences of the Czech Republic, v.v.i., Prague

ISBN 978-80-86246-39-0 (printed, Extended Abstracts)
ISBN 978-80-86246-40-6 (electronic)
ISSN 1805-8248 (printed)
ISSN 1805-8256 (electronic)

list of papers scientific commitee

Lifetime prediction of wind loaded mast and towers with respect to lateral and longitudinal wind spectrum
S. Pospíšil, J. Lahodný, V. Janata, S. Urushadze, R. Král, S. Hračov
pages 1041 - 1048, full text

The paper describes an analysis for the purpose of theoretical lifetime prediction of telecommunication towers, guyed masts and antenna’s extensions. It brings simple and practical calculation method and the theoretical results are compared with long-term measurements on several existing structures. Wind load has been described taking into account the probability distribution function of the mean velocity and corresponding wind pressures. The dynamic response of structure is caused by the turbulence described with a spectral model both for longitudinal and lateral direction. Structural response takes into account the contribution of more vibration modes. Based upon this knowledge, the number of cycles during certain period was determined. The fatigue analysis has been carried out and the residual time life prediction of antennas was determined for an industrial partner.


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