建筑结构学报2012，Vol.33Issue(11)：18-26,9.
近地面与超高空台风风场不同时距湍流特性对比分析
Comparative study of turbulence characteristics at different time intervals of surface boundary layer and super-high altitude typhoon field
摘要
Abstract
Based on the field measurement of surface boundary layer wind field during the passage of typhoon Kalmaegi, Fung-wong, Jangmi and Morakot, and the super-high altitude wind field during the passage of typhoon Fanabi, Megi and Lionrock, this paper conducted a comparative study of turbulence intensity at different time intervals (3 seconds,1 minute,lO minutes and 1 hour) of surface boundary layer and super-high altitude typhoon field, and analyzed the turbulence characteristics and its relationship with different time intervals of boundary layer typhoon field. The results clearly demonstrate that the mean wind speed and wind direction gradually stabilized with the increase of the time interval. 1 minute or 3 seconds time interval data reveals a good fluctuating and variations characteristics of mean wind speed and direction, turbulence intensity and gust factor, especially on larger wind speed occasion. There is great difference between the surface boundary layer and super-high altitude typhoon field in the aspects of mean wind speed discreteness and the ratios between the maximum mean wind speeds at different time intervals. The code empirical formula estimation recommended by the Architectural Institute of Japan (AIJRLB-2004) can be roughly utilized in the longitudinal turbulence intensity estimation of super-high altitude wind field in southeast China coast. The longitudinal turbulence intensity decreases more quickly than the lateral turbulence intensity with the decrease of the time interval when the time interval is shorter than 10 minutes. The 3 seconds time interval turbulence intensity in longitudinal direction is smaller than the value in lateral direction lightly for the super-high altitude typhoon field. The 3 seconds time interval turbulence intensity in longitudinal direction is smaller than the value in lateral direction greatly for the surface boundary layer typhoon field.关键词
台风观测/风场特性/湍流度/阵风因子/不同时距Key words
typhoon observation/wind field characteristics/turbulence intensity/gust factor/different time intervals分类
建筑与水利引用本文复制引用
史文海,李正农,秦良忠,陈联盟,罗叠峰..近地面与超高空台风风场不同时距湍流特性对比分析[J].建筑结构学报,2012,33(11):18-26,9.基金项目
国家自然科学基金项目 （）
浙江省自然科学基金项目 （）
住房和城乡建设部科技项目（2009K218,2010K343）. （）
