Non-Gaussian Features of Local Wind Pressure for Typical Gable Roof of Low-rise Building
The non-Gaussian characteristics of local wind pressure of typical gable roof of low-rise building with a slop angle of 18.4° were monitored by means of the wind tunnel test under terrain roughness regimes of A,B and C.The probability density distribution features of wind pressure coefficient series are investigated,the characteristics of non-Gaussian zones distribution of wind pressure relative to different wind angles and different terrain conditions are analyzed and the relationships between non-Gaussian pressure and distinctions of flow field on roof are discussed.The studying results indicate that GEV distribution and Gamma distribution fit the probability density distribution of wind pressure coefficient better than Gaussian distribution and Lognormal distribution,but the fitting effect for long trailing tail part is undesirable,when skewness and kurtosis are large in magnitude(absolute value).The variation of terrain roughness and wind directions have significant influence on the distribution of non-Gaussian pressure regions on low-rise building roof.Under the oblique wind direction,the Gaussian pressure zone is divided into three sections along the approaching wind direction,along which the areas move with the change of terrain roughness regimes.The non-Gaussian features of wind pressure is positively related to mutual correlation coefficient of its time-history.
Low-rise building Wind tunnel test Non-gaussian Correlation Skewness Kurtosis
Yang-jin YUAN Yi-min DAI Shu JIANG Chi-yu LI
Key Laboratory of Wind-resistance and Vibration Control(Hunan Provincial),College of Civil Engineering,Hunan University of Science and Technology,Xiangtan,China
国际会议
2019 International Conference on Informatics, Control and Robotics 2019信息学、控制和机器人学国际会议(ICICR2019)
上海
英文
343-347
2019-06-16（万方平台首次上网日期，不代表论文的发表时间）