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（中國建筑上海設(shè)計研究院有限公司， 上海 200063）

［摘要］某廣場建筑由5棟塔樓、裙房及地下室組成，為大底盤多塔結(jié)構(gòu)。結(jié)構(gòu)高度為266m的A塔樓采用框架核心筒結(jié)構(gòu)體系，結(jié)構(gòu)高度為996m的B，C，D，E塔樓采用高位轉(zhuǎn)換的部分框支剪力墻結(jié)構(gòu)。通過對SATWE軟件建立的單塔模型和MIDAS軟件建立的大底盤多塔模型的計算結(jié)果分析比較，研究大底盤多塔結(jié)構(gòu)的地震響應(yīng)特點，得出大底盤多塔結(jié)構(gòu)裙房部分承擔(dān)的地震剪力明顯降低，裙房以上的各塔樓地震剪力有一定程度的增大。對高位轉(zhuǎn)換框支剪力墻結(jié)構(gòu)進行小震彈性和大震靜力彈塑性時程分析以找出結(jié)構(gòu)的薄弱部位。并對轉(zhuǎn)換層、框支梁、框支柱、剪力墻等薄弱部位采取有效的抗震設(shè)計措施。

［關(guān)鍵詞］大底盤多塔結(jié)構(gòu); 高位轉(zhuǎn)換; 部分框支剪力墻; 彈塑性時程分析

中圖分類號：TU318     文獻標(biāo)識碼：A     文章編號：1002-848X(2015)06-0041-05

Structural analysis of a multitower plaza building with large chassis

Yi Meiying

 (China Shanghai Architectural Design & Research Institute Co., Ltd., Shanghai 200063, China)

Abstract:A plaza building consists of five tower structures with basements and common podium  and is a multitower structure with large chassis. Atower with 266 meters structural height adopts framecore wall structural system. The other B，C，D，E towers with 996 meters structural height are partial framesupported shear wall structures with highlevel transfer stories. The seismic response characteristics of multitower structure with large chassis were analyzed through comparing the calculation results of singletower model by SATWE software and multitower model with large chassis by MIDAS software. The results show that the seismic shear force of the podium significantly reduces and the seismic shear force of the towers up the podium increases. The elastic and elastoplastic timehistory analysis under the frequent earthquake were carried out on partial framesupported shear wall structure in order to find the weak parts. The effective seismic measures were taken in parts of the transfer stories, framesupported beams, framesupporting columns and shear wall.

Keywords:multitower structure with large chassis; highlevel transfer story; partial framesupported shear wall; elastoplastic timehistory analysis

作者簡介：易美英，碩士，工程師，一級注冊結(jié)構(gòu)工程師，Email:yimeiying_1983@163.com。

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