Consideration on gust factor for estimation of wind environment in urban area

Abstract

In this paper, the relationship between gust factor and wind speed ratio against a reference wind is considered. Ground level winds have been measured at 15 points in 5 areas, Tokyo. Wind data observed at 74.5m high by Tokyo Meteorological Observatory is used as reference wind. The equation of the gust factor related to wind speed ratio made comparison with functions which were proposed by Hongo et al, Nishimura et al, Satake et al, and Murakami et al. Also the proposed equation was applied to estimate the wind environment based on Murakami criteria, ranks of predicted wind condition are obtained to be equivalent and/or significant little over to the obserations. Then it is concluded that the proposed equation of gust factor is reasonabl.