Analysis And Simulation Of Non-gaussian Characteristics Of Fluctuationg Wind Pressure

Wind acting on the surface of the structure ge nerate separationg,reattachme nt and so on. The wind make the fluctuating wind pressures show astrong non-Gauss ia n in the loca l positio n. In the non-Gauss ian fluctuating windpressure, the peak factor based on Gauss ia n will severe ly underestimate thestructure and/or reta ining structure dyna mic response. So it is necessary tostudy the Non-Gauss ian fluctuatio n wind pressure and the effect of thestructure.The main content of this paper is as follows:(1) Based on the observatio ns o f the wind e xperime nt, stationary andnon-Gauss ian fluctuating wind pressure is elected by the reverse arrange mentand K-S test. And the non-Gauss ia n distrib utio n is ana lyzed us ing the higheroreder statis tics test. Then the peak factor o f fluctuating wind pressure iscalculated us ing fo ur ways, the ir res ults are contrasted with peak factors us ingdefinition. The way of cons ider the Non-Gauss ia n and bandwidth parameters iswell c lose to the peak factpr us ing the definition. Than to ana lys is thefluctuating wind stress spectrum and Von Karma n spectrum. To select thespecified fluctuating wind pressure power spectrum with the appropriateturbule nce inte ns ity and inte gra l scale is used to simulate the Non-Gauss ianfluctuating wind pressure.(2) Based on the ana lyse o f no n-Gauss ian fluctuating wind pressure,non-Gauss ian fluctuating pressure with the specified power spectrum, skewnessand kuros is is s imulating b y us ing the correlatio n d istortion method. Accordingto the examp les, the correlatio n distortio n method meet the require ments of thestability, spatoa l correlation, skewness, kurtos is and the power spectrum. So thecorre lation d istortio n method is a n e ffective s imulatio n method ofNon-Gaussian fluctuating wind pressure.