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Wind-induced response and equivalent static wind load for suspended dome roof structure of Jinan Olympic Sports Hall
Author(s): 
Pages: 214-219
Year: Issue:  2
Journal: Journal of Vibration Engineering

Keyword:  风振响应弦支穹顶屋盖CCM方法等效静风荷载耦合项;
Abstract: 在模态加速度法和荷载响应相关法基础上,推导出结构脉动风总响应的实际理论组合公式,首次提出用于补偿背景和共振分量之间耦合项的一致耦合方法(CCM)来求解结构的风致响应,并严格推导出各分量相应的等效静风荷载.将该方法应用于中国最大跨度弦支穹顶屋盖结构——济南奥体馆,通过同步测压试验确定表面风荷载,对其自振特性、风振响应、振型间的耦合项、位移风振系数,以及背景、共振和交叉项的等效静风荷载分布规律进行了研究.结果表明:风振响应呈现显著的多模态耦合、多振型响应特征;背景和共振分量之间的交叉项影响不能忽略、共振分量相比背景和交叉项分量起主导作用;CCM方法可作为此类结构风振精细化分析的有效方法.
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