Journal of Wind Engineering
Online ISSN : 1349-340X
Print ISSN : 1349-3507
ISSN-L : 1349-340X
Volume 34 , Issue 4
[No. 121]
Showing 1-3 articles out of 3 articles from the selected issue
Technical Report
  • Hiroaki NISHIMURA, Koji TAKAMORI, Takashi MARUYAMA
    2009 Volume 34 Issue 4 Pages 95-102
    Published: October 01, 2009
    Released: January 29, 2010
    JOURNALS FREE ACCESS
    A sudden severe storm destroyed a large tent structure connected to some concrete weight cubes, at near coast in Tsuruga City, Fukui Prefecture. High wind accompanied with the gust-front in the storm killed a man and injured nine persons. While the tent structure had an opening faced to sea, it was covered on remained walls with canvas. In this situation, when wind attacked from the open face, the tent would be easily lifted up, even though some weights might fairly resist to the lift caused by wind. This study describes the observation of damage to the tent structure and wind tunnel test results, which was carried out to quantify the wind load when the tent will be blown off in various situations of wall coverings.
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  • Hiroshi KATSUCHI, Hitoshi YAMADA, Harukazu OHASHI
    2009 Volume 34 Issue 4 Pages 103-110
    Published: October 01, 2009
    Released: January 29, 2010
    JOURNALS FREE ACCESS
    An edge-girder deck is often used for cable-stayed bridges because of its structural simplicity and economical advantages. Aerodynamics of edge-girder decks has been studied by many researchers so far and less stability has often been reported. This paper presents a wind-tunnel test study of aerodynamic/aerostatic characteristics of an edge-girder deck (width/height = 12) of a composite cable-stayed bridge. As a result, large amplitude vortex-induced vibration occurred in vertical and torsional directions. It was found that vortices separated from the leading edge play a role to cause vortex-induced vibration. It was also found that onset wind speed and amplitude of vortex-induced vibration can be estimated by formulae in the wind-resistant design manual for road bridges. A three-component-force test showed that drag coefficient of the deck is by 30% larger than that of a similar type deck (plate girder) specified in the bridge design specification in Japan.
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