（1 同济大学建筑工程系，上海 200092； 2 同济大学航空航天与力学学院，上海 200092； 3 同济大学土木工程防灾国家重点实验室，上海 200092）

［摘要］兰州云天皇冠酒店为屈曲约束支撑框架-核心筒混合结构，属超限高层建筑。介绍了工程的特点及结构布置情况，针对结构平面布置不对称和高度超限的情况，对比了结构分别采用普通支撑和屈曲约束支撑时的弹塑性性能。结果表明，在小震作用下，屈曲约束支撑处于弹性状态，为结构提供支撑刚度；在罕遇地震作用下，部分屈曲约束支撑达到屈服状态，为结构提供耗能能力。通过采用屈曲约束支撑，既减轻了结构地震反应，又达到设计的预期性能目标且满足规范的要求。

［关键词］屈曲约束支撑；普通支撑；抗震性能；方钢管混凝土；钢筋混凝土剪力墙

Pushover analysis of a super-high hybrid structure with buckling-restrained braces

Si Linjun¹, Hu Dazhu², Li Guoqiang^1,3, Huang Bencai²(1 College of Civil Engineering, Tongji University, Shanghai 200092，China; 2 College of Aerospace Engineering and Mechanics of Tongji University, Shanghai 200092，China;3 State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092，China)

Abstract:Lanzhou Yuntian Huangguan Hotel is a super-high hybrid structure with buckling-restrained braces (BRB) and it ranks the high-rise building beyond code limits. The characteristics and structural arrangement were introduced. The influences of BRB and conventional braces on the structure were analyzed. The results show that when subjected to frequent earthquake, the BRB are still in elastic state, and can provide stiffness for the main structure. When subjected to rare earthquake, a number of BRB are in post-yielding state, and can provide the additional energy dissipation capacity for the main structure. The results also show that the BRB work as an anti-lateral force component in elastic phase and as an energy dissipation member in plastic phase. The work state and performance of the structure with BRB can meet the design goals of performance and satisfy criterion requirements.

Keywords:buckling-restrained brace; conventional brace; seismic behavior; concrete-filled rectangular tube (CFRT); reinforced concrete (RC) shear wall

作者简介：司林军，博士研究生，Email:06silinjun@tongji.edu.cn。

参考文献

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［2］ FEMA356  Prestandard and commentary for the seismic rehabilitation of buildings［S］. Washinton, D.C.: Federal Emergency Management Agency，2000.

［3］ ATC-40 Seismic evaluation and retrofit of concrete buildings［S］. California: Applied Technology Council, 1996.

［4］ 韩林海．钢管混凝土结构［M］．北京：科学出版社，2000.

［5］ 汪大绥, 贺军利, 芮明倬, 等. 带有剪力墙(筒体)结构静力弹塑性分析方法与应用［J］. 建筑结构, 2006, 36(7): 3-7.

［6］ 司林军, 李国强, 孙飞飞．钢筋混凝土剪力墙二元件模型的有效性研究［J］．结构工程师, 2008,24(4): 19-24.