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胡 凯1,2, 朱惠德1, 倪建公1
(1 中船第九设计研究院工程有限公司,上海 200063;2 同济大学土木工程学院,上海 200092)[摘要] 超高层建筑由于各部分构件阻尼特性不同形成非线性阻尼,在计算分析中的影响不可忽略。结合月星环球博览中心复杂高层公建项目,分别采用规范推荐值、等效粘滞阻尼比以及全楼0. 02阻尼比来考虑顶部钢塔楼和主体结构不同的阻尼耗能特性,研究了非线性阻尼对带有顶部钢塔的高层混合结构的影响,并为今后同类项目的抗震设计提供一定的参考和依据。
[关键词] 混合结构;顶部塔楼;非线性阻尼;粘滞阻尼比
中图分类号:TU971 文献标识码:A 文章编号:1002-848X(2012) Sl-0343-03Influence of nonlinear damping on the hybrid high-rise bIulding
Hu Kai1,2, Zhu Huide1, Ni Jiangong1
(1 China Shipbuilding NRDI Engineering Co., Ltd., Shanghai 200063, China; 2 Tongji University, Shanghai 200092, China)Abstract: As a result of different damping characteristics, nonlinear damping existed in hybrid structure cannot be neglected in the calculation. Code-recommended value, simpMed value (0.02) and viscous damping ratio were taken respectively to study the influence of nonlinear damping of the lugh-rise building with steel frame tower at the top. Some references are also provided for related designs in the future.
Keywords: hybrid structure; tower built at the top; nonlinear damping; viscous damping ratio