大型双面广告牌面板风压特性的试验研究  

A study of wind pressure characteristics of large double-plate billboards through wind tunnel testing

作　　者：汪大海[1] 程浩[1] 张玉青 徐康[1] 

机构地区：[1]武汉理工大学土木工程与建筑学院,武汉430070 [2]西安建筑科技大学土木工程学院,西安710055

出　　处：《振动与冲击》2017年第22期172-177,共6页Journal of Vibration and Shock

基　　金：国家自然科学基金(51478373);同济大学土木工程防灾国家重点实验室开放课题(SLDRCE13-MB-04)

摘　　要：近年来户外大型广告牌发展迅速,其强风下的风致损坏也时有发生。针对这类特殊开敞板式结构的风压特性,通过大型风洞测压试验研究,全面分析了各风向角下面板表面净风压的统计分布特征,给出了面板风压系数的分布规律;考察局部风压的非高斯特性,采用Hermite矩方法计算了非高斯测点的极值风压;最终给出了面板风压分区及对应的设计参数。该研究为大型广告牌结构的抗风设计提供基础数据和分析依据。Double-plate billboards are destroyed by strong wind occasionally. Wind tunnel test was conducted to study wind pressure characteristics of this kind of open-plate structure. The statistical characteristics of net pressure distribution on the plates in different wind directions was comprehensively analyzed. The distribution of pressure coefficients on the plates were given. Non-Gaussian features on local regions were studied,and the extreme pressure was calculated using the Hermit moment method as well. Wind pressure regions and the corresponding design parameters were provided. This study may provide basic data and analysis for wind resistant design of double-plates billboards.

关 键 词：双面广告牌 风洞试验 风压系数 非高斯特性 极值风压 

分 类 号：TU312.1[建筑科学—结构工程] TU317.1