To address the issue of difficulty in accurately estimating extreme wind speeds for different wind cli-mates in typical coastal areas of China with strong/typhoon mixed wind climates,a method for estimating ex-treme wind speeds considering both typhoons and non-typhoons is proposed.For non-typhoon data,the opti-mal probability density distribution is used to fit the annual extreme wind speed samples of meteorological sta-tions,and the uncertainty caused by limited sample size and the selection of different probability models are taken into consideration,to obtain the extreme wind speed range.The estimation uncertainty of generalized ex-treme value(GEV)and Pearson-Ⅲ(P3)is approximately 3 to 8 m/s.For typhoon data,the stochastic path simulation combined with three-dimensional typhoon wind field model is adopted to directly estimate the ex-treme wind speed at a height of 10 m and the reference height.Therefore,non-typhoon and typhoon events are treated as independent events,and the outer envelope of their extreme wind speed curves is used as the recom-mended design curve,and compared with the current regulations.The results show that using intervals to choose wind speed can ensure that the standard wind speed is generally 2 to 5 m/s lower than the upper enve-lope wind speed,close to the interval mean,and falls within the interval,providing a more comprehensive method for wind speed values.
维普
万方数据
