屈曲約束支撐在高層鋼結構住宅中的應用
馮銘，楊聰武,曹志丹，譚詠梅
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馮銘，楊聰武,曹志丹，譚詠梅（昆鋼集團設計院有限公司， 安寧 650302）［摘要］某高層鋼結構住宅樓高48.6m，結構體系采用鋼框架-支撐結構，主要抗側力構件采用屈曲約束支撐。通過多種結構形式的對比分析闡述了框架-屈曲約束支撐結構體系地震作用效應小、塑性耗能能力優(yōu)等結構特征。闡述了屈曲約束支撐設計控制內力的確定和支撐桿件與框架梁、柱連接節(jié)點設計等關鍵技術。通過多遇地震作用下結構整體計算分析、中震彈性分析和不考慮屈曲約束支撐作用的純框架結構抗震驗算，得出框架-屈曲約束支撐結構體系抗震性能優(yōu)越、技術經濟指標合理的結論。［關鍵詞］鋼框架-支撐結構；高層鋼結構住宅；屈曲約束支撐；塑性變形中圖分類號：TU318 文獻標識碼：A 文章編號：1002-848X(2013)04-0066-05Application of the buckling restrained brace in high-rise steel structure residencesFeng Ming, Yang Congwu, Cao Zhidan, Tan Yongmei（Kunming Iron & Steel Group Design Institute Co., Ltd., Anning 650302, China）Abstract: A high-rise steel structure residence is 48.6 meters high, structural system of the residence is the steel braced frame structure, and its main anti-lateral force components are buckling restrained braces. Through analysis of a variety of structural forms, structural features of the framework buckling restrained brace structure system were elaborated, such as small seismic action effect and superior plastic energy dissipation capacity. Key technologies were introduced, including determination of design control internal force for the buckling restrained brace and design of connection nodes among the support rods, frame beams, and columns. Through the overall structure calculation under frequent earthquake, structural seismic elastic analysis under fortification intensity, and pure frame structure seismic calculation without regarding the effect of buckling restrained braces, it is concluded that seismic performance of the framework-buckling restrained brace structure is good and its technical and economic indicators are reasonable.Keywords: steel braced frame structure; highrise steel residence; buckling restrained brace; plastic deformation作者簡介：馮銘，院長，工程師，一級注冊建筑師，Email:kgjtycw@126.com。參考文獻［1］上海市金屬結構協會，同濟大學.TJ型屈曲約束支撐設計手冊［M］.上海：2010.［2］JGJ 99—98高層民用建筑鋼結構技術規(guī)程［S］.北京：中國建筑工業(yè)出版社，1998.［3］CECS 261:2009鋼結構住宅設計規(guī)范［S］.北京：中國建筑工業(yè)出版社，2009.
