1)华东建筑设计研究院有限公司，上海，200002；2)同济大学，上海，200092；3)上海古北(集团)有限公司，201103；4)新日铁制铁株式会社，日本东京。
［提要］古北财富中心主楼结构方案综合考虑结构抗震性能、建筑的功能、设备的布置及经济性后，采用屈曲约束支撑钢框架结构体系。柱网为92m×92m, 92m×(14～178)m,结构特点为大柱距、核芯区偏心布置。支撑布置的范围由于受到建筑立面和设备的限制，只能集中在楼梯和电梯间周围。工程选择普通支撑框架和屈曲约束支撑框架两种结构方案，从抗震性能、建筑功能及经济性等方面进行了综合比较。最后就屈曲约束支撑框架在工程中的应用作了进一步阐述。
［关键词］  高层建筑  钢结构  屈曲约束支撑  抗震设计
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