高层建筑顶部围挡结构风荷载试验研究  

Experimental Study on Wind Loads on Parapet Wall for Super High-Rise Buildings

作　　者：马文勇[1,2] 黄铮汉 郑德乾 张正维 MA Wenyong;HUANG Zhenghan;ZHENG Deqian;ZHANG Zhengwei(State Key Laboratory of Mechanical Behavior and System Safety of Traffic Engineering Structures,Shijiazhuang Tiedao University Shijiazhuang,050043,China;Hebei Wind Engineering and Energy Utilization Engineering Technology Innovation Center Shijiazhuang,050043,China;College of Civil Engineering,Henan University of Technology Zhengzhou,450001,China;Arup Engineering Consulting(Shanghai)Co.,Ltd.Shanghai,200031,China)

机构地区：[1]石家庄铁道大学省部共建交通工程结构力学行为与系统安全国家重点实验室,石家庄050043 [2]河北省风工程和风能利用工程技术创新中心,石家庄050043 [3]河南工业大学土木工程学院,郑州450001 [4]奥雅纳工程咨询(上海)有限公司,上海200031

出　　处：《振动．测试与诊断》2022年第5期967-972,1037,1038,共8页Journal of Vibration,Measurement & Diagnosis

基　　金：国家自然科学基金资助项目(51408196);河北省教育厅重点资助项目(ZD2018063);河南工业大学青年骨干教师培育计划资助项目。

摘　　要：由于外观和功能需求,超高层建筑可能会建造比较高的顶部围挡,因其位于结构顶部,不同的顶部围挡高度可能会对高层建筑顶面局部范围的风荷载,以及对围挡本身的风荷载产生影响,而目前尚没有统一的风荷载取值依据。针对此问题,以方形断面超高层建筑为对象,采用刚性模型测压风洞试验方法,研究了建筑顶部无、有建造围挡及围挡高度,对建筑的顶面、外表面局部区域以及顶部围挡风荷载的影响。结果表明,超高层建筑顶部围挡及其高度对建筑顶面风压分布的影响最显著,需要在结构抗风中予以重视。基于风洞试验结果,通过考虑顶部围挡高度影响范围内风压的高斯、非高斯分布,给出了不同高度顶部围挡下的建筑顶面、外表面以及顶部围挡的风荷载取值建议,可为该类结构的抗风设计提供参考。Due to the appearance and functional requirements,relatively high parapet wall is built on the top of super high-rise buildings.Since it is located on the top of the structure,the height of parapet wall may have a great impact on the wind load distribution in the local area of the top surface of the high-rise building,as well as the wind load on the enclosure itself.However,there is almost no reference for determination of wind load on such kind of parapet wall at present.In this paper,wind pressure measurement is conducted on the rigid model of a square section high-rise building with parapet wall of different heights in the wind tunnel.The influence of the parapet wall on the wind load of the building is investigated in the aspect of comparisons of wind pressure distribution on the parapet wall surface and on the roof and outer face of certain height of the building.The results show that the parapet wall and its height have significant effects on the wind pressure distribution on the top surface of the building,which should be paid special attention in the corresponding wind resistance design.Based on the wind tunnel test results considering the Gaussian and non-Gaussian distribution zone of the wind pressure on the surfaces separately,suggestions for wind load on such parapet walls and the local outer surface and the top surface of the building with different height are presented as reference for the corresponding wind resistance design.

关 键 词：超高层建筑 围挡 风洞试验 风压分布 体型系数 

分 类 号：TU973.213[建筑科学—结构工程]