Main / Issues / Vol. 18, N 2 (2012) / Articles

Procedure of definition of geometrical parameters constructions of selffsupporting polygonal poles taking into account regulation natural and forced os-fcillations

Ye. V. GorokhovДонбасская национальная академия строительства и архитектурыV. N. VasylevДонбасская национальная академия строительства и архитектурыS. G. KuznetsovДонбасская национальная академия строительства и архитектурыI. M. GaranzhaДонбасская национальная академия строительства и архитектурыE. A. LozinskyДонбасская национальная академия строительства и архитектурыR. N. PavlovskyНациональный авиационный университетA. G. ShcherbonosНациональный авиационный университет
Abstract: In this paper, technique for the determination of geometrical parametres 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, vortex shedding frequency, fast Fourier transform.

Pages: 85-96.

PDF

For citation: Gorokhov, Ye. V.; Vasylev, V. N.; Kuznetsov, S. G. [et al.]. Procedure of definition of geometrical parameters constructions of selffsupporting polygonal poles taking into account regulation natural and forced os-fcillations . – Text : electronic. – In: Metal Constructions. – 2012. – Том 18, № 2. – Р. 85-96. – URL: https://donnasa.ru/publish_house/journals/mk/2012-2/01_gorohov_vasylev_kuznecov_garanzha_lozinskij_pavlovskij_scherbonos.pdf (date of access: 24.11.2024). – ISSN 1993-3517.

Том 18, № 2 (2012)
Journal: Metal Constructions
Publish house: Donbas National Academy of Civil Engineering and Architecture