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（深圳市建筑設(shè)計(jì)研究總院有限公司， 深圳 518031）

［摘要］喀什國(guó)際免稅廣場(chǎng)A塔結(jié)構(gòu)高度255m，采用框架角撐外筒+框架支撐內(nèi)筒鋼結(jié)構(gòu)體系。采用PKPM，ETABS和MIDAS/Gen這3種軟件計(jì)算的小震彈性結(jié)果基本一致,計(jì)算結(jié)果表明，結(jié)構(gòu)的周期比、層間位移角、層間受剪承載力之比等結(jié)果均滿足規(guī)范要求。選用7條波進(jìn)行彈性動(dòng)力時(shí)程分析，所得層剪力平均值結(jié)果小于反應(yīng)譜法結(jié)果。中震彈性分析和大震彈塑性時(shí)程分析均滿足規(guī)范相關(guān)要求。通過調(diào)整內(nèi)、外筒剛度使得內(nèi)、外筒在水平力下承擔(dān)的剪力基本相當(dāng)。通過驗(yàn)算確定設(shè)計(jì)過程中無需考慮結(jié)構(gòu)整體穩(wěn)定性。結(jié)構(gòu)樓蓋在人行荷載作用下滿足舒適度的要求。

［關(guān)鍵詞］超高層建筑; 鋼結(jié)構(gòu); 結(jié)構(gòu)設(shè)計(jì); 鋼支撐; 鋼管混凝土柱; 樓板舒適度

中圖分類號(hào)：TU973.1+7       文獻(xiàn)標(biāo)識(shí)碼：A       文章編號(hào)：1002-848X(2014)16-0001-06

Ultra high-rise steel structure design on tower A of Kaishi International Duty-free Plaza

Liu Qiongxiang, Wang Qiwen, Zhang Jianjun, Zhou Bin, Luo Riwang, Yang Wanghua

（Shenzhen General Institute of Architectural Design and Research Co., Ltd.， Shenzhen 518031， China）

Abstract: Tower A of Kaishi International Duty-free Plaza is a 255m high structure. The structure system is composed of steel outer-tube with braces at the corner and steel core-tube with braces. Programs such as PKPM, ETABS and MIDAS/Gen were used to analyze the structure performance under frequent earthquake. The results consistently show that the period ratio, inter-story drift ratios, shear resistance ratios can meet the requirement of codes. The inter-story shear force determined by analysis of elastic time-history action by seven seismic waves is smaller than the results of response spectrum analysis. The results of analysis under design intensity earthquake and severe earthquake are in accord with related codes. The shear forces of the outer-tube and core-tubes are basically equal by adjusting the stiffnesses. The overall stability is not need to be considered according to the checking results. Floor vibration serviceability acted by the walking load can satisfy the requirement of comfort of codes.

Keywords: ultra high-rise building; steel structure; structural design; steel brace; concrete-filled steel tube column; comfort of floors

作者簡(jiǎn)介：劉瓊祥，教授級(jí)高級(jí)工程師，Email：yangwanghua2012@gmail.com。

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