- 摘 要
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（中信建筑設(shè)計研究總院有限公司， 武漢 430014）
［摘要］武漢精武路項目五期T5塔樓，建筑高度330m，為超B級高度超限高層。該建筑采用帶加強(qiáng)層的矩形鋼管混凝土柱框架-鋼筋混凝土核心筒混合結(jié)構(gòu)體系。介紹了該工程結(jié)構(gòu)體系的特點、抗震性能化設(shè)計的原則及方法、基礎(chǔ)設(shè)計、整體彈性計算結(jié)果、罕遇地震作用下的動力彈塑性分析結(jié)果。對設(shè)計中的一些關(guān)鍵問題：包括伸臂桁架和環(huán)帶桁架的設(shè)置、轉(zhuǎn)換層關(guān)鍵節(jié)點的分析設(shè)計、結(jié)構(gòu)屈曲分析及穩(wěn)定計算進(jìn)行了深入闡述。最后提出設(shè)計建議：在超高層建筑中部偏上部位利用避難層同時設(shè)置伸臂桁架和環(huán)帶桁架加強(qiáng)層，對提高結(jié)構(gòu)整體抗側(cè)剛度非常有效；對于豎向尺寸突變的建筑，將使用有限元法得到的屈曲因子作為結(jié)構(gòu)整體穩(wěn)定性的判別指標(biāo)，其結(jié)果更加合理。
［關(guān)鍵詞］超高層建筑； 混合結(jié)構(gòu)； 抗震性能化設(shè)計； 伸臂桁架； 環(huán)帶桁架； 轉(zhuǎn)換結(jié)構(gòu)； 屈曲因子
中圖分類號：TU973+.3文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2019)13-0022-08
Structural design of an over-limit high-rise tower in Wuhan
Zhou Xibo， Li Zhi， Chen Zhijun， Wang Hai， Dai Miao，Huang Qing
(Citic General Institute of Architectural Design and Research Co., Ltd., Wuhan 430014, China)
Abstract:Wuhan Jingwu Road Project Phase Five T5 Tower with 330m height is a over-limit high-rise building beyond B-level height, and the concrete-filled steel column frame-concreter core hybrid structure system with the strengthened stories was used. The structural characteristics, the principles and methods of performance-based seismic design, the foundation design, the overall calculation results, the elasto-plastic time-history analysis results under rare earthquake were described. Several key problems were deeply discussed, such as setting outrigger and belt trusses, the design and analysis of the key joints in transfer story, structural buckling analysis and stability calculation.The design suggestion was given finally: outrigger truss and belt truss are both using at refuge story in the middle and upper part of the high-rise building, which is very effective to enhance the lateral-force-resisting stiffness；the buckling factor obtained by FEM could be used to judge the overall stability of the structure with mutation in the vertical size，the result would be more reasonable.
Keywords:super high-rise building; hybrid structure; performance-based seismic design; outrigger truss; belt truss; transfer structure; buckling factor
作者簡介：周熙波，碩士，高級工程師，一級注冊結(jié)構(gòu)工程師，Email:seaboo@163.com。
