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Interference effects of two and three super-tall buildings under wind action 被引量:10
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作者 Ming Gu zhuang-ning xie 《Acta Mechanica Sinica》 SCIE EI CAS CSCD 2011年第5期687-696,共10页
Most previous investigations on interference effects of tall buildings under wind actions focused on the wind induced interference effects between two buildings,and the interference effects of three or more buildings ... Most previous investigations on interference effects of tall buildings under wind actions focused on the wind induced interference effects between two buildings,and the interference effects of three or more buildings have seldom been studied so far due to the huge workload involved in experiments and data processing.In this paper,mean and dynamic force/response interference effects and peak wind pressure interference effects of two and three tall buildings,especially the three-building configuration,are investigated through a series of wind tunnel tests on typical tall building models using high frequency force balance technique and wind pressure measurements.Furthermore,the present paper focuses on the effects of parameters,including breadth ratio and height ratio of the buildings and terrain category,on the interference factors and derives relevant regression results for the interference factors. 展开更多
关键词 Super-tall building · Wind force and response · Interference effect · Wind tunnel test
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名义封闭结构风致内压的试验研究(英文)
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作者 Xian-feng Yu Jing-xuan Gao +1 位作者 zhuang-ning xie Xu Wang 《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》 SCIE EI CAS CSCD 2019年第7期487-498,共12页
目的:在确保模型气密性绝对良好的前提下,通过设置不同的背景泄漏,详细研究不同背景孔隙率和风向角下的平均和峰值内压水平,为工程结构抗风设计和规范修订提供指导和依据.创新点:首次探究了完全封闭结构的内压特征,并在此基础上系统研... 目的:在确保模型气密性绝对良好的前提下,通过设置不同的背景泄漏,详细研究不同背景孔隙率和风向角下的平均和峰值内压水平,为工程结构抗风设计和规范修订提供指导和依据.创新点:首次探究了完全封闭结构的内压特征,并在此基础上系统研究了不同背景孔隙率和风向角下名义封闭结构的风致内压变化规律.方法:1.在静态空气中进行压力测试,获得完全封闭结构的内压特性(图6~9).2.在完全封闭结构的表面开不同的孔隙;通过多参数风洞试验(图3和表1),获得名义封闭结构的平均和峰值风压变化特征(图14~18),并与中国建筑结构荷载规范(GB50009-2012)进行对比分析.结论:1.完全封闭结构的内压呈非平稳状态,长达9d的观察结果表明内压呈现一定的周期性.2.在均布背景孔隙下,平均内压系数仅在-0.15^-0.14范围内波动,且低于中国建筑结构荷载规范的取值-0.2.3.当峰值因子g取3.5时,最高负极值风压系数为-0.255,低于由规范计算得到的峰值内压系数-0.326. 展开更多
关键词 内压 风洞试验 完全封闭 背景泄漏
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