低矮房屋屋面风压的实测及分析  

Field measurements and analysis of pressures on roof of a low-rise building

作　　者：戴益民[1] 李秋胜[1] 李正农[1] 

机构地区：[1]湖南大学建筑安全与节能教育部重点实验室,长沙410082

出　　处：《建筑结构》2009年第7期88-89,96,共3页Building Structure

基　　金：湖南大学"985工程"基金;国家自然科学基金(50778072)

摘　　要：通过对全尺寸低矮房屋的现场实测,分析了不同风向角的屋面风压系数的分布规律,同时对迎风向屋面角部和边缘的加密测点实测数据进行研究,总结了不同风场下该区域局部风压峰值的分布及其脉动规律。结果表明,迎风向屋沿局部风压远比屋面平均风压高,且屋面最大局部风压在斜风向产生,验证了该区域风洞试验结果的有效性、可靠性,并得到了一些有价值的结论,为改进低矮房屋的设计提供了依据。Based on the full-scale measurement of wind efforts on a low-rise building, it investigated the characteristics of pressure coefficients on the roof of the building for different wind azimuths, and summarized the information of the largest suctions （ peak negative pressure）on the leading edges and roof comers where flow separate on occured. The results indicate that the comer regions receive the most severe suction, and the results of this study are expected to be valuable for wind-resistant design of low-rise buildings.

关 键 词：低矮房屋 脉动风压 峰值风压 风压系数 

分 类 号：TU312.1[建筑科学—结构工程] TU473.16