Main / Issues / Vol. 9, N 2 (2013) / Articles

Procedure of geometrical parameters definition of polygonal poles constructions taking into account regulation natural and forced oscillations

I. M. GaranzhaDonbas National Academy of Civil Engineering and Architecture
Abstract: In this paper, technique for the determination of geometrical parameters of polygonal bent poles (PBP) of isolated structures is given and to intended to escape possibility situation of a wind resonance on different builtup territory. The main description of PBP constructive form is contains with indicating the necessary typically sizes. The broad scope application of PBP metal structures (especially noted application in power lines) is confirmed research relevance and in connection with this stress-strain state under the correct wind load. The peculiarities of the process wind-stream for cylindrical structures in different Reynolds number (Re) flow are described. The vortex wake mode criteria basic is experimentally determined for PBP: vortex shedding frequency (fв = 30…40 Hz); Strouhal number (Sh = 0,108…0,152) at number of faces (n = 6, 8, 10 and 12). In the experiments have been established dependence between criteria Reynolds number, Strouhal number and number of faces, wind velocity (Vi) for isolated PBP structures.

Keywords: polygonal bent poles, wind load, vortex wake mode, wind resonance, wind tunnel, Reynolds number, Strouhal number, fequency of vortexes descent, fast Fourier transform.

Pages: 105-114.

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For citation:
For citation: Garanzha, I. M. Procedure of geometrical parameters definition of polygonal poles constructions taking into account regulation natural and forced oscillations. – Text : electronic. – In: <em>Modern Industrial and Civil Construction</em>. – 2013. – Vol. 9, N 2. – Р. 105-114. – URL: https://donnasa.ru/publish_house/journals/spgs/2013-2/05_garanzha.pdf (date of access: 22.12.2024). – ISSN 1993-3495.


Issue Cover
Vol. 9, N 2 (2013)
Journal: Modern Industrial and Civil Construction
Publish house: Donbas National Academy of Civil Engineering and Architecture