前方建筑对高层建筑风压分布的干扰效应研究  

INVESTIGATION OF INTERFERENCE EFFECT OF ANTERIOR BUILDINGS ON WIND PRESSURES ON THE HIGH-RISE BUILDING

作　　者：陈伏彬[1] 吕记斌 李秋胜[3] 陈凡[3] 

机构地区：[1]长沙理工大学土木与建筑学院,长沙410114 [2]济南高新控股集团有限公司,济南250101 [3]湖南大学建筑安全与节能教育部重点实验室,长沙410082

出　　处：《工业建筑》2015年第9期50-53,130,共5页Industrial Construction

基　　金：国家自然科学基金项目资助(51408062;91215302);湖南省创新平台与人才计划项目(2015RS4050);中国博士后基金(2015M572238);湖南省教育厅一般项目(15C0054)

摘　　要：在大气边界层风洞中开展了某高层建筑群刚性模型测压试验,对比分析了不同前方干扰条件下受扰建筑物表面风压分布特性。结果表明:1)建筑前方无施扰建筑时,斜向布置的施扰建筑物以及并联布置的施扰建筑物对受扰建筑立面的正压影响较大;2)前方施扰建筑较低时,下部平均正压减小明显,最大高达70%,而高处则存在正压局部放大效应;3)前方施扰建筑较高时,迎风面的干扰因子在高度上分布是比较平均的,并且受到的遮挡效应十分明显。所得结果可为此类建筑进行结构风荷载设计提供参考。Wind pressure tests on cluster of high-rise buildings were carried out in the boundary layer wind tunnel. The wind pressure characteristics on the building surfaces under different cases of anterior interference buildings were studied. The results showed that the positive pressures on the elevation face had significant influence due to parallel and oblique buildings when there were no buildings in front of the target building. In the case of lower buildings existed in front of the target building, the positive pressures decrease obviously, with the large value of 70% , but local magnifying effects were found in higher section. The shielding effect was very obvious by the higher building existed in front, meanwhile, the distributions of influence factor on the windward face were quite uniform. The results were expected to be very useful for the design of wind load for similar high-rise buildings.

关 键 词：建筑群 风洞试验 风压 干扰效应 干扰因子 

分 类 号：TU973.32[建筑科学—结构工程]