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王 靈
(建學(xué)建筑與工程設(shè)計所有限公司，上海200336)[摘要] 上海虹橋麗寶廣場（北）位于虹橋商務(wù)核心區(qū)一期01地塊D04a街坊，建筑造型獨特，結(jié)構(gòu)體系采用了不對稱大底盤雙塔樓結(jié)構(gòu)。兩個塔樓一個為L形，一個為圓形，平面形狀及剛度相差顯著，結(jié)構(gòu)的扭轉(zhuǎn)效應(yīng)明顯。其平面和立面規(guī)則性均超限，不滿足現(xiàn)行抗震設(shè)計規(guī)范的要求。采用了PUSH&EPDA程序建立了結(jié)構(gòu)整體分析模型，對結(jié)構(gòu)進(jìn)行了7度罕遇地震下的靜力彈塑性分析。計算結(jié)果表明，罕遇地震下結(jié)構(gòu)的最大彈塑性層間位移角為1/89，滿足規(guī)范要求。
[關(guān)鍵詞] 超限高層；不對稱大底盤雙塔樓結(jié)構(gòu)；靜力彈塑性分析
中圖分類號：TU318 文獻(xiàn)標(biāo)識碼：A 文章編號：1002-848X(2012) S2-0120-04Elasto-plastic analysis of Shanghai Hongqiao Libao Square( North)
Wang Ling
(Jianxue Architecture and Engineering Design Institute Co., Ltd., Shanghai 200336, China)Abstract: Shanghai Hongqiao Libao Square( North) is located in Hongcpao central business district phase 1 01 block D04a neighborhood. It is unique in architectural modeling and has used asymmetric Twin Towers structure with a large chassis. Because of different flat shape and stiffness between two towers of a L shape,a circular, the torsion seismic vibration is obvious. It is irregular in layout and in elevation, which does not meet the requirement of the present seismic design code. Using PUSH&EPDA procedure to establish a whole structure analysis model, the elasto-plastic pushover analysis was camed out under the rare intensity of 7 degree earthquake. The calculation results show that, under the rare earthquake, the maximal elasto-plastic inter-story displacement angle of the building is 1/89, which meet the seismic design require code.
Keywords: out of code high-rise building; asymmetric twin towers structure with a large chassis; elasto-plastic analysis
