摘要
在风洞中用高频动态天平研究了两个高层建筑间的风致干扰效应。通过分析上游施扰模型的尾流和动态天平试验中受扰模型的基底弯矩谱 ,得到了上游建筑的旋涡脱落、上游建筑对受扰建筑自身涡脱特性的影响以及上游建筑尾流中紊流的增强这三种因素是建筑物风致动力干扰效应的机理。最后分析了风场对动力干扰效应的影响。
Wind induced interference effects between two tall buildings are experimentally studied in TJ 1 wind tunnel using high frequency force balance technique. By analysing the upstream model's wake flow and the downstream model's overturning moment power spectra, three kinds of interference mechanism are identified, which include the influence of upstream building's vortex shedding, the upstream building's influence on the downstream building's vortex shedding and the increase of the turbulence in the wake flow of the upstream building. Finally the influence of wind field are analysed.
出处
《振动工程学报》
EI
CSCD
北大核心
2003年第1期99-104,共6页
Journal of Vibration Engineering
基金
国家自然科学基金资助重大项目 (编号 :5 9895 410 )
教育部博士点专项基金
教育部"高等学校骨干教师资助计划"资助项目
