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1)華東建筑設計研究院有限公司，上海，200002；2)同濟大學，上海，200092；3)上海古北(集團)有限公司，201103；4)新日鐵制鐵株式會社，日本東京。
［提要］古北財富中心主樓結構方案綜合考慮結構抗震性能、建筑的功能、設備的布置及經(jīng)濟性后，采用屈曲約束支撐鋼框架結構體系。柱網(wǎng)為92m×92m, 92m×(14～178)m,結構特點為大柱距、核芯區(qū)偏心布置。支撐布置的范圍由于受到建筑立面和設備的限制，只能集中在樓梯和電梯間周圍。工程選擇普通支撐框架和屈曲約束支撐框架兩種結構方案，從抗震性能、建筑功能及經(jīng)濟性等方面進行了綜合比較。最后就屈曲約束支撐框架在工程中的應用作了進一步闡述。
［關鍵詞］  高層建筑  鋼結構  屈曲約束支撐  抗震設計
Study and Design of Highrise Steel Structure Office Building with Unbonded Braces/Rui Mingzhuo1,Li Lishu1,He Junli1,Wang Dasui1,Hu Baolin2,Sun Feifei2,Li Guoqiang2,Lun Wenhui3,Takashi Shirai4(1 East China Architectural Design & Research Institute Co., Ltd., Shanghai 200002,China; 2 Tongji University, Shanghai 200092, China; 3 Shanghai Gubei(group) Co., Ltd., Shanghai 201103,China; 4 Nippon Steel Corporation, Tokyo, Japan)
Abstract:The building, considering seismic performance, architectural and mechanic planning requirements and cost saving, is designed as steel BRBframe structure. Columns grids of 92m×92m and 92m×(14～178)m are used in most areas. The structural characteristics are large span, and cores eccentricity. The braces are located only around stairs and elevators because of the restriction from architectural and mechanic planning. Ordinary braceframe and BRBframe structure are chosen,and the comparison in seismic performance, architecture functions, mechanic settings and cost saving is made. At last the BRBframe is discussed for the highrise steel structure.
Keywords:highrise steel structure; BRBbrace; seismic design