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（1 同濟(jì)大學(xué)建筑工程系，上海 200092； 2 同濟(jì)大學(xué)航空航天與力學(xué)學(xué)院，上海 200092； 3 同濟(jì)大學(xué)土木工程防災(zāi)國家重點(diǎn)實(shí)驗(yàn)室，上海 200092）

［摘要］蘭州云天皇冠酒店為屈曲約束支撐框架-核心筒混合結(jié)構(gòu)，屬超限高層建筑。介紹了工程的特點(diǎn)及結(jié)構(gòu)布置情況，針對結(jié)構(gòu)平面布置不對稱和高度超限的情況，對比了結(jié)構(gòu)分別采用普通支撐和屈曲約束支撐時的彈塑性性能。結(jié)果表明，在小震作用下，屈曲約束支撐處于彈性狀態(tài)，為結(jié)構(gòu)提供支撐剛度；在罕遇地震作用下，部分屈曲約束支撐達(dá)到屈服狀態(tài)，為結(jié)構(gòu)提供耗能能力。通過采用屈曲約束支撐，既減輕了結(jié)構(gòu)地震反應(yīng)，又達(dá)到設(shè)計(jì)的預(yù)期性能目標(biāo)且滿足規(guī)范的要求。

［關(guān)鍵詞］屈曲約束支撐；普通支撐；抗震性能；方鋼管混凝土；鋼筋混凝土剪力墻

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

作者簡介：司林軍，博士研究生，Email:06silinjun@#edu.cn。

參考文獻(xiàn)

［1］ GB50011—2001建筑抗震設(shè)計(jì)規(guī)范［S］. 北京: 中國建筑工業(yè)出版社，2001.

［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］ 韓林海．鋼管混凝土結(jié)構(gòu)［M］．北京：科學(xué)出版社，2000.

［5］ 汪大綏, 賀軍利, 芮明倬, 等. 帶有剪力墻(筒體)結(jié)構(gòu)靜力彈塑性分析方法與應(yīng)用［J］. 建筑結(jié)構(gòu), 2006, 36(7): 3-7.

［6］ 司林軍, 李國強(qiáng), 孫飛飛．鋼筋混凝土剪力墻二元件模型的有效性研究［J］．結(jié)構(gòu)工程師, 2008,24(4): 19-24.