建筑结构学报2017，Vol.38Issue(3)：103-110,8.DOI:10.14006/j.jzjgxb.2017.03.011
稳态冲击射流作用下平地及坡地高层建筑的风荷载特性
Wind load characteristics for high-rise building on flat terrain and slope under steady-state impinging jet
摘要
Abstract
The wind resistance design in the load code is based on ordinary atmospheric boundary layer wind field in which mean wind profile is in the form of exponent or logarithm.Actually the velocity profiles of downburst wind field are of great difference from those of the normal atmospheric boundary layer wind field.Based on the simulation of steady-state impinging jet experimentally and numerically,the wind pressure distribution and wind load characteristics on high-rise building surface were studied in the flow over flat terrain and slope.It is found that wind pressure distribution of downburst wind field is different from that of the normal atmospheric boundary layer wind field.On the windward side,the pressure of the lower part of the building is obviously larger than that of the upper part of the building.It is also shown that the windward pressure at slope is smaller than that at flat terrain,which shows contrary rules in two sides and leeward side.Furthermore,the results of different slopes indicate that windward pressure on the building decreases with the increase of slope angle.关键词
高层建筑/冲击射流/风洞试验/数值模拟/表面风压/风荷载Key words
high-rise building/impinging jet/wind tunnel test/numerical simulation/surface wind pressure/wind load分类
建筑与水利引用本文复制引用
汪之松,左其刚,唐伟峰,刘亚南,李正良..稳态冲击射流作用下平地及坡地高层建筑的风荷载特性[J].建筑结构学报,2017,38(3):103-110,8.基金项目
国家自然科学基金项目(51208537),中央高校基本科研业务费专项(CDJZR12200016). （51208537）
