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（清華大學(xué)建筑設(shè)計(jì)研究院有限公司， 北京 100084）

［摘要］人民大廈采用了鋼筋混凝土框架剪力墻結(jié)構(gòu)，是具有高位大跨連接體、樓板局部不連續(xù)、平面凸凹不規(guī)則、樓板局部轉(zhuǎn)換等不規(guī)則項(xiàng)的超限高層建筑。在10～11層采用鋼桁架將兩側(cè)U形核心筒連接，關(guān)鍵構(gòu)件的抗震性能目標(biāo)設(shè)定為“中震彈性、大震不屈服”。采用SATWE軟件進(jìn)行了小震、中震計(jì)算及彈性時(shí)程分析計(jì)算，采用MIDAS/Gen軟件進(jìn)行了小震下計(jì)算復(fù)核，采用ABAQUS軟件進(jìn)行大震下的彈塑性分析計(jì)算；采取在U形核心筒墻體內(nèi)附加豎向鋼斜撐及在連接體內(nèi)附加水平支撐桁架加強(qiáng)其整體性等加強(qiáng)措施，使本工程達(dá)到了抗震設(shè)計(jì)預(yù)期性能目標(biāo)。

［關(guān)鍵詞］超限高層建筑; 抗震性能設(shè)計(jì);  時(shí)程分析; 彈塑性分析

中圖分類號(hào)：TU973      文獻(xiàn)標(biāo)識(shí)碼：A      文章編號(hào)：1002-848X(2014)15-0013-06

Structural design of an out-of-code high-rise building

Wang Fang

（Architectural Design and Research Institute of Tsinghua University Co., Ltd.， Beijing 100084, China）

Abstract: The People Building adopts reinforced concrete frame-shear wall structure, which is an out-of-code high-rise building with some structure irregularities of high-position large-span connecting body, floor partial discontinuity, irregular convex plane and floor partial conversion. The U-shaped reinforced concrete core walls at both sides of the building were connected by steel trusses from the tenth to the eleventh floor, and seismic performance targets of key components were set as "keeping elastic under the moderate earthquake and not yielding under the rare earthquake". SATWE software was used to conduct the analysis under the frequent earthquake and the moderate earthquake as well as the elastic time-history analysis. MIDAS/Gen software was used to check the calculations under the frequent earthquake. ABAQUS software was used to carry out dynamic elasto-plastic analysis under the rare earthquake. Some measures were taken to strengthen the overall stability, such as adding vertical steel braces in the U-shaped reinforced concrete core walls and adding horizontal bracing trusses in the connecting body, so that the expected seismic performance targets could be achieved.

Keywords: out-of-code high-rise building; performance-based seismic design; time-history analysis; elastic-plastic analysis

作者簡介：王昉，高級(jí)工程師，一級(jí)注冊(cè)結(jié)構(gòu)工程師， Email:jzjgwf0586@163.com。

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