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  張萌萌，原中晉，吳曉涵，呂西林，錢(qián)江，周穎

  （同濟(jì)大學(xué)結(jié)構(gòu)工程與防災(zāi)研究所，上海 200092）

 

［摘要］上海國(guó)際設(shè)計(jì)中心建筑造型獨(dú)特，采用不等高雙塔連體結(jié)構(gòu)。其平面和立面規(guī)則性均超限，不滿(mǎn)足現(xiàn)行抗震設(shè)計(jì)規(guī)范的要求。主、副塔樓的高度和剛度相差顯著，結(jié)構(gòu)的扭轉(zhuǎn)反應(yīng)明顯。采用NOSACAD有限元程序建立整體結(jié)構(gòu)分析模型，對(duì)結(jié)構(gòu)進(jìn)行7度罕遇烈度下的彈塑性時(shí)程分析。計(jì)算結(jié)果表明，小震情況下，結(jié)構(gòu)構(gòu)件未出現(xiàn)損壞；大震情況下，結(jié)構(gòu)最大層間位移角為1/112，滿(mǎn)足規(guī)范要求。筒體構(gòu)件損壞順序和分布較為合理，能在一定程度上耗散地震輸入能量。

［關(guān)鍵詞］雙塔結(jié)構(gòu)；連體結(jié)構(gòu)；彈塑性時(shí)程分析；抗震性能

中圖分類(lèi)號(hào)：TU311-41,TU973-14文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2012)07-0036-05

 

Zhang Mengmeng, Yuan Zhongjin, Wu Xiaohan, Lü Xilin, Qian Jiang, Zhou Ying

(Research Institute of Structural Engineering and Disaster Reduction, Tongji University, Shanghai 200092, China)

 

Abstract: The Shanghai International Design Center(SHIDC) is unique in architectural modeling and has used different-height twin-tower hybrid system. SHIDC is irregular in layout and in elevation, which does not meet the requirement of the present design code. The calculation model of the overall structure is established by NOSACAD. Because of the different height and stiffness between the main tower and the annex tower, the torsion seismic vibration is obvious. The elasto-plastic time history analysis was carried out under the frequent and rare intensity of 7 degree earthquake. The results show that, under the frequent earthquake, there is no damaged element, and under the rare earthquake, the maximum inter story drift of the complex building is 1/112,which meet the seismic design requirement of Chinese code．The order and distribution of damages on components of the tubes are reasonable, which can dissipate some dynamic energy.

Keywords: twin-tower structure; connected structure; elasto-plastic time history analysis; seismic performance

*國(guó)家自然科學(xué)基金項(xiàng)目 (51021140006，50708071)，國(guó)家重點(diǎn)基礎(chǔ)研究發(fā)展計(jì)劃973項(xiàng)目（2007CB714202）。

作者簡(jiǎn)介：張萌萌，碩士，Email: zmm861129@163.com。

 

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