建筑结构学报2013，Vol.34Issue(6)：68-74,7.
设有外镂空装饰结构的扭转体型高层建筑风荷载研究
Study of wind loads on torsion shaped high-rise building with outer pierced ornament structure
摘要
Abstract
In order to obtain wind loads on a torsion shaped high-rise building with outer pierced ornament structure,wind tunnel testing method was employed.The distribution characteristics of wind pressures and resultant forces on the torsion shaped high-rise building were analyzed.The influence of the ornament structure on wind pressure distribution of the main building was investigated.The wind pressure distribution on the ornament structure itself was also studied.Finally,the resultant forces on the torsion shaped high-rise building with or without the ornament structure were compared.Results show that the torsion shape has significant influences on the local wind pressures and torsional moments of the building and has insignificant influences on the resultant forces in X and Y directions of the building.The ornament structure has insignificant influences on the pressures in the windward and leeward surfaces of the main structure.However,the mean and fluctuating wind loads on the side wind surface of the main structure can be reduced significantly due to the influence of the ornament structure,resulting in a reduction in peak negative pressure which is quite beneficial for wind-resistant design of enclosure structures.The wind pressures on the inner and outer surfaces of the ornament structure are quite close,indicating that the net wind pressures on the ornament structure are very low.Totally speaking,the ornament structure has a insignificant influence on mean wind loads of the main building,but it can reduce the fluctuating wind loads on the main building to some extent.As a result,the wind-resistant design of the main building is beneficial from the existing of the ornament structure.关键词
高层建筑/风荷载/风洞试验/扭转/风压Key words
high-rise building/ wind load/ wind tunnel test/ torsional effect/ wind pressure分类
建筑与水利引用本文复制引用
沈国辉,钱涛,杨晓强,方鸿强,楼文娟..设有外镂空装饰结构的扭转体型高层建筑风荷载研究[J].建筑结构学报,2013,34(6):68-74,7.基金项目
国家自然科学基金项目(51178425) （51178425）
