水滴形大跨钢屋盖结构风洞试验和风振分析  

Wind tunnel test and wind vibration analysis of water drop type large⁃span steel roof structure

作　　者：郑江[1,2] 王凯 王先铁[1] ZHENG Jiang;WANG Kai;WANG Xiantie(School of Civil Engineering,Xi’an University of Architecture and Technology,Xi’an 710055,China;Key Lab of Structural Engineering and Earthquake Resistance,Ministry of Education,Xi’an University of Architecture and Technology,Xi’an 710055,China)

机构地区：[1]西安建筑科技大学土木工程学院,西安710055 [2]西安建筑科技大学结构工程与抗震教育部重点实验室,西安710055

出　　处：《建筑结构》2024年第18期103-111,共9页Building Structure

基　　金：国家自然科学基金项目(51678474)。

摘　　要：自然风经过大跨结构时,由于结构屋顶形状不规则,通常会引起柔性屋面的振动,因此针对大跨屋面结构抗风设计需要考虑风压分布和风振响应。以陕西省水务集团矿泉水生产车间为工程背景,制作了1∶200的刚性模型,通过刚性模型风洞试验测得该水滴型大跨钢屋盖结构的表面风压,研究了屋盖表面典型测点及整体的风压分布规律。基于风洞试验数据,对结构进行风振时程分析,得到了屋盖表面的风振响应和风振系数。结合刚性模型风洞试验和风振分析,深入研究了水滴形大跨屋盖结构的风压分布规律和风致振动特性,并总结了其共性规律。When the natural wind passes through the large⁃span structure,due to the irregular shape of the structural roof,it usually causes the vibration of the flexible roof.Therefore,the wind pressure distribution and wind⁃induced vibration response should be considered in the wind⁃resistant design of the large⁃span roof structure.Taking the mineral water production workshop of Shaanxi Water Group as the engineering background,a rigid model of 1:200 was made.The surface wind pressure of the water droplet large⁃span steel roof structure was measured by the rigid model wind tunnel test,and the typical measuring points on the roof surface and the overall wind pressure distribution law were studied.Based on the wind tunnel test data,the wind⁃induced vibration time history analysis of the structure was carried out,and the wind⁃induced vibration response and wind⁃induced vibration coefficient of the roof surface were obtained.Combined with the rigid model wind tunnel test and wind⁃induced vibration analysis,the wind pressure distribution law and wind⁃induced vibration characteristics of the drop type large⁃span roof structure were studied in depth,and the common laws were summarized.

关 键 词：水滴形大跨钢屋盖结构 刚性模型 风洞试验 时程分析 风压分布 风振系数 

分 类 号：TU391[建筑科学—结构工程]