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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塔為位于設(shè)防烈度為8度（0.30g）地區(qū)的超高層建筑。針對(duì)結(jié)構(gòu)超限情況，設(shè)計(jì)中采取相應(yīng)的抗震設(shè)防措施，設(shè)定合適的性能目標(biāo)，通過(guò)結(jié)構(gòu)在小震、中震和大震作用下的分析，驗(yàn)算各構(gòu)件在地震作用下的性能，實(shí)現(xiàn)對(duì)結(jié)構(gòu)的性能化設(shè)計(jì)。結(jié)果表明：結(jié)構(gòu)在小震下各構(gòu)件均處于彈性狀態(tài)；中震下重要的豎向構(gòu)件保持彈性，耗能構(gòu)件部分屈服；在大震動(dòng)力彈塑性分析中結(jié)構(gòu)實(shí)現(xiàn)支撐先屈服，然后外筒裙梁屈服，最后個(gè)別柱子出現(xiàn)塑性應(yīng)變的屈服機(jī)制，各構(gòu)件均能滿足預(yù)定的性能要求。轉(zhuǎn)換節(jié)點(diǎn)在大震中實(shí)現(xiàn)不屈服的性能目標(biāo)。

［關(guān)鍵詞］超高層建筑; 鋼結(jié)構(gòu); 性能化設(shè)計(jì); 性能目標(biāo); 抗震措施

中圖分類(lèi)號(hào)：TU973.3+1       文獻(xiàn)標(biāo)識(shí)碼：A       文章編號(hào)：1002-848X(2014)16-0007-06

Performance-based seismic design on the ultra high-rise steel structure of 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 an ultra high-rise building and the seismic fortification intensity is 8 degree (0.30g). Appropriate seismic strengthening measures were adopted in response to the code-exceeding aspects of the structure. All the performance objectives were set in advance. The structural performance design was executed by checking the performance of each component under different seismic conditions. The results show that the structure is in elastic situation under the frequent earthquake. The important vertical components maintain elastic while a part of energy dissipation components are yielded under the intensity earthquake. The progressively yield mechanism are realized in the progress of dynamic  elastic-plastic analysis under rare earthquake, in which the braces yield firstly, beams yield next, very few columns yield finally. All the components can satisfy the performance objective. The transfer joint unyielded under rare earthquake.

Keywords: ultra high-rise building; steel structure; performance-based design; performance objective; seismic strengthening measure

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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