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（北京市建筑設(shè)計(jì)研究院有限公司， 北京 100045）

［摘要］安泰廣場(chǎng)1#樓結(jié)構(gòu)高度為201-15m，2#樓結(jié)構(gòu)高度為84-5～94-1m，均采用鋼筋混凝土框架核心筒結(jié)構(gòu)體系；3#樓結(jié)構(gòu)高度為49～91m，采用鋼筋混凝土框架-剪力墻結(jié)構(gòu)體系；2#，3#樓在結(jié)構(gòu)高度70～90m間相鄰兩側(cè)分別懸挑9m鋼桁架連橋。采用SATWE，MIDAS/Building軟件對(duì)結(jié)構(gòu)進(jìn)行小震彈性對(duì)比分析，采用ABAQUS軟件對(duì)結(jié)構(gòu)進(jìn)行大震彈塑性時(shí)程分析。結(jié)果表明，通過(guò)對(duì)1#樓重要部位設(shè)置構(gòu)造鋼骨、控制軸壓比等加強(qiáng)措施，結(jié)構(gòu)整體延性滿足要求，結(jié)構(gòu)能夠?qū)崿F(xiàn)抗震性能目標(biāo)并達(dá)到多道抗震防線設(shè)計(jì)要求；通過(guò)確定2#，3#樓懸挑桁架的豎向地震作用放大系數(shù)及懸挑桁架端部最大相對(duì)位移，可以合理確定防撞縫寬度，從而確保中、大震下懸挑桁架及主體相關(guān)區(qū)域構(gòu)件安全。

［關(guān)鍵詞］安泰廣場(chǎng)； 超高層建筑； 抗震性能化設(shè)計(jì)； 彈塑性分析； 懸挑桁架

中圖分類號(hào)：TU973, TU351文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2016)17-0068-06

Structural seismic design on Antai Square

Li Qian, Chen Xiaoda, Wei Dong

（Beijing Institute of Architectural Design, Beijing 100045, China）

Abstract:The structural height of 1# building of Antai Square is 201-15m, the structural height of 2# building is 84-5～94-1m, 1# building and 2# building both adopt the reinforced concrete frame-corewall structural system. The structural height of 3# building is 49～91m, and the reinforced concrete frame-shear wall structural system is adopted. The steel truss connecting bridge structures have 9m-long cantilevers set up between two sides of 1#, 2# building at 70～90m height. Elasticity comparison analyses on the structure under frequent earthquake were provided by programs of SATWE and MIDAS/Building. Elastic-plastic time-history analysis under rare earthquake was provided by ABAQUS program. The results show that with reinforcement measures of setting steel construction and controlling the axial compression ratio at important parts of 1# building, the requirement of ductility of the overall structure is met, and the structure can realize seismic performance objectives and meet the requirements of multi-channel seismic line design. Vertical earthquake amplification coefficient of the cantilever truss and maximum relative displacement of cantilever truss end of 2# and 3# buildings are determined, which can reasonably determine the anti-collision joint width, so as to ensure the safety of the components of cantilever truss and the related region.

Keywords:Antai Square; super high-rise building; performance-based seismic design; elastic-plastic analysis; cantilever truss

作者簡(jiǎn)介：李芊，碩士，工程師，Email: liqian@biad.com.cn。