湖南大学学报（自然科学版）2016，Vol.43Issue(11)：1-6,6.
不同外部平台宽度对大跨建筑屋盖风荷载的影响∗
Influence of Various External Platform Widths on Wind Loads of Large-span Buildings
摘要
Abstract
In order to study the influence of external platform width on wind loads of large-span build-ings,wind tunnel tests of six rigid models with various platform widths were carried out.In particular, the characteristics of mean wind pressure coefficient and fluctuating wind pressure coefficient were studied. The test results show that the enlargement of platform widths increases the mean wind loads.The mean wind loads change from small to large and to small again with the increase of platform width.The most unfavorable situation occurs when the platform width is 12 meters,and its growth rate reaches 33%,while its growth rate is 20% when the platform width is 20 meters.Meanwhile,the increase of platform widths increases the fluctuating wind loads.The most unfavorable situation takes place when the platform width is 12 meters,and its growth rate reaches 11%,while its growth rate is 8% when the platform width is 20 meters,and the rate is lower than 5% in other cases.The fluctuating wind loads on the leeward side de-crease when the width of platform increases.The maximum decrease reaches 7% when the platform width is 20 meters.关键词
大跨建筑/外部平台/刚性模型/脉动风荷载/风洞试验Key words
large-span buildings/platform/rigid model/fluctuating wind loads/wind tunnel test分类
建筑与水利引用本文复制引用
李正农,陈策..不同外部平台宽度对大跨建筑屋盖风荷载的影响∗[J].湖南大学学报（自然科学版）,2016,43(11):1-6,6.基金项目
国家自然科学基金资助项目(51278190,51178180,51478179),National Natural Science Foundation of China(51278190,51178180,51478179) （51278190,51178180,51478179）
