Naslov
MODELLING OF THE ACTION OF THE BORA WIND UPON HIGH SLENDER STRUCTURES

Autori
Peroš, Bernardin ; Boko, Ivica ; Šimunović, Tihomir

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Response of Structures to Extreme Loading / Ghobarah, Ahmed ; Gould, Philip - Toronto : Elsevier, 2003, O17-O17

Skup
Response of Structures to Extreme Loading

Mjesto i datum
Toronto, Kanada, 03.08.2003. - 06.08.2003

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
The Bora wind ; stochastic values ; structure response ; national codes

Sažetak
The phenomenon of the catabatic action of the Bora wind upon the structures and the respective response of high slender structures have not yet been investigated sufficiently so that the paper presents the analysis of the critical values of the wind excitation upon high slender structure (with the dominant wind load), according to the measured one-second values of the wind velocity (at altitudes of 10, 52 and 140 m). The regularity of the catabatic and turbulent wind action was analysed depending upon the material of the structure and its geometric characteristics taking into account the response of the structure. It should be stressed that the paper uses for the first time the data of wind profile measurements of the Bora action (at the Dubrovnik location, Croatia) ; this wind is known world-wide as a cold, catabatic and local, changeable wind blowing from the land towards the sea. The model was used to simulate the stochastic wind-structure interaction and the value of the dynamic characteristic wind Bora for various second values for averaging the wind velocity (1, 10, 60 and 600 seconds). All the relevant values in the critical state which define the structure resistance and the wind action upon the structure are expressed as random values so that the probabilistic procedure was used to determine the safety degree- the reliability index for the structures under consideration. The investigations were performed according to the EUROCODE recommendations and they represent the basis for the development of the Croatian codes in the field of the dynamic wind action upon the structure.

Izvorni jezik
Engleski

Znanstvena područja
Građevinarstvo

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