建筑结构学报2011，Vol.32Issue(4)：1-8,8.
近地边界层台风观测及湍流特征参数分析
Monitoring of typhoons in surface boundary layer and analysis of Wind turbulence characteristics
摘要
Abstract
Mean wind speed and wind turbulence characteristics of typhoon winds in surface boundary layer were studied based on three-dimensional wind data, which were recorded from ultrasonic anemometers at 10m height at sites near seashore during land falling of Typhoons Damrey, Chunchu and Paipiroon.The relations among turbulence parameters such as power law index, friction velocity, turbulence intensities and gust factor were analyzed under different types of upwind terrains based on the field measurements results.The results of the analysis reveal that friction velocity strongly depends on mean wind speed, which increases with increasing wind speed.Power law index and turbulence intensities decrease with the increasing of wind speed.Gust factor increases with the increasing of turbulence intensities.By fitting the results of turbulence parameters, the relations among the parameters were proposed which will be useful for the wind resistant design of low rise buildings in typhoon-prone regions.关键词
风荷载/台风观测/湍流度/阵风因子/抗风设计Key words
wind loads/ typhoon observation/ turbulence intensity/ gust factor/ wind-resistant design分类
建筑与水利引用本文复制引用
胡尚瑜,宋丽莉,李秋胜..近地边界层台风观测及湍流特征参数分析[J].建筑结构学报,2011,32(4):1-8,8.基金项目
国家自然科学基金重大研究计划"重大工程的动力灾变"项目(90715031、90815030). （90715031、90815030）
