聂  祺1，  潘  立1，  罗乾跃2，  周  鹏2
  (1中国建筑科学研究院，北京100013；2中国建筑西南设计研究院有限公司，成都610000)

[摘要] 七彩云南第壹城项目位于昆明市，地下3层、地上57层，主屋面结构高度为246m，抗侧力体系采用带加强层的混合框架-型钢（钢板）混凝土核心筒结构。为确保结构的抗震安全性，基于微观有限元模型，采用弹塑性时程分析法，对结构进行抗震性能评价及结构方案优化。优化后的分析结果表明：主体结构在大震作用下屈服机制为整体屈服机制，未出现薄弱楼层和薄弱部位，满足“大震不倒”的抗震设防目标要求。总的来说，带加强层的混合框架．型钢（钢板）混凝土核心筒抗侧力体系具有较高的抗震承载力和延性，适合在8度区超高层建筑结构中应用。
[关键词] 混合结构；钢管混凝土柱；钢板混凝土剪力墙；弹塑性时程分析法
中图分类号：TU973    文献标识码：A  文章编号：1002-848X(2012) S2-0050-05

Elasto-plastic time-history analysis of Qicaiyunnan Building
Nie Qi1,  Pan Li1,  Luo Qianyue2,  Zhou Peng2
(1 China Academy of Building Research, Beijing 100013, China; 2 China Southwest Architectural Design & Research Institute, Chengdu 610000, China)

Abstract: Qicaiyunnan Project, has totally 60 stories (246m tall) and 3 base levels. The lateral structure system employs mixed frame-steel concrete core tube structure system. To ensure that the seismic structure safety,a nonlinear time history analysis method, based on the microscopic finite element model, is used for the structure seismic performance evaluation and sUucture optimization. The optimization of the main structure results shows that no weak floors and components occur, and its structure yielding mechanism is a general yield mechanism, therefore the seismic performance objectives of not collapsing under rarely efuthquake is reached.  In general, the structural system with an enhanced layer hybrid framework-steel concrete core wall lateral force resisting system has a high seismic capacity and ductility and is suitable for application of the super high-rise building structures in the high intensity area.
Keywords: hybrid structures, concrete-filled steel tube column; steel plate-concrete composite wall; nonlinear time history analysis method