Naslov
Actual Wind Load and the Comparison of the Results With the Wind Tunnel Tests Upon the Dubrovnik Bridge

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

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

Izvornik
Proceedings of The Third International Conference on Advances in Structural Engineering and Mechanics, ASEM'04 - Volume of Keynote Papers & Abstracts / Chang-Koon, Choi ; Hwan-Woo, Lee ; Hyo-Gyong, Kwak - Seoul : Techno-Press, 2004

Skup
Advances in Structural Engineering and Mechanics, ASEM'04

Mjesto i datum
Seoul, Republika Koreja, 02.09.2004. - 04.09.2004

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
wind load ; wind tunnel

Sažetak
The paper presents the computation results for the Dubrovnik steel cable-stayed bridge with a total span of 474 m by using two different sources of wind action. The first set of data was obtained by direct measurements of the wind direction and velocity, second values, acting on the structure at the end of its construction and the second set of data was based on the simulated wind action in the tunnel carried out by prof. G. Sedlacek (Germany). The Bora wind in Croatia is known as a catabatic, very cold and locally changeable wind blowing from the direction of the towards the Adriatic coastline, with the maximum measured wind gusts over 70 m/s. This term, Bora, is used for other winds with similar characteristics in the whole world. The investigations of the turbulence characteristics of the Bora wind in the bottom layer considering the aspect of the dynamic action on the structures are currently performed and have not been completed yet. It is interesting to note that the most extensive investigations on the Bora wind action in Croatia have been carried out by Japanese in the period 1970/73 ; their objective was to study this natural phenomenom in the bottom layer in the order to reach conclusions about the action of a similar wind Oroshi in Japan. The recently completed measurements of the second values of wind gusts at three points at different elevations (10, 52 and 140 m) at the pile of the Dubrovnik bridge and the fourth measurement point at the order end of the bridge have made it possible to present the actual action of this highly catabatic wind. The results obtained by this computation were compared with the results obtained by computations based on the values of the simulated wind action in the tunnel whit the assumed wind direction and velocity. The paper proves that for the winds of the Bora type the tunnel simulations (the wind tunnel tests) are not suitable so that measurements at actual locations are required. 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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