建筑结构学报2012，Vol.33Issue(1)：1-9,9.
台风“鲇鱼”作用下厦门沿海某超高层建筑的风场和风压特性实测研究
Field measurements of boundary layer wind field and wind pressure characteristics of a super-tall building on coast of the Xiamen City during passage of typhoon Megi
摘要
Abstract
Based on the field measurement of boundary layer wind field and wind pressure characteristics of super-tall building on coast of the Xiamen City before and after typhoon Megi land falling, this paper presented selected measured datum. The field datum such as wind speeds, wind directions and wind pressures were simultaneously and continuously measured from the tall building during the typhoon. Detailed analysis of the field datum was conducted to investigate the characteristics of boundary layer wind field and wind pressure of the tall building under typhoon condition. The results clearly demonstrate that the turbulence intensity of wind field maintains stable with the wind speed increased. The gust factor increases with the increase of turbulence intensity. The power spectral densities of measured wind speed roughly fit with von Karman spectra. Furthermore, it is found that there is a strong relevance about the instantaneous wind pressure, mean wind pressure, mean wind pressure coefficient and extreme wind pressure coefficient among the test point of every building side. The mean wind pressure and mean wind pressure coefficient are relatively large on the windward side while very small on the leeward side. As the direction of the wind changes that blows in from the building corner, the mean wind pressure coefficients of two windward side show opposite trend when the wind speed increases, and the mean wind pressure coefficients of two leeward side decrease when the wind speed increases. The extreme wind pressure coefficient fluctuates relatively large on the windward side but shows a roughly uniform distribution on the leeward side. The value and its variation of the fluctuating wind pressure coefficient are relatively large on the windward side but very small on the leeward side. The value of extreme wind pressure coefficient and fluctuating pressure coefficient on both sides decreases when the wind speed increases.关键词
高层建筑/台风观测/湍流特性/脉动风压/风压系数Key words
tall building/typhoon observation/turbulence feature/fluctuating pressure/pressure coefficient分类
建筑与水利引用本文复制引用
史文海,李正农,罗叠峰,张传雄,梁笑寒..台风“鲇鱼”作用下厦门沿海某超高层建筑的风场和风压特性实测研究[J].建筑结构学报,2012,33(1):1-9,9.基金项目
国家自然科学基金重大研究计划项目（90815030）,国家自然科学基金项目（51008237）,住房和城乡建设部科技计划项目（2010K343）. （）
