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  陳  濤，  孫艷萍，  李紅雨
  （艾奕康咨詢（深圳）有限公司上海分公司，上海 200040）

[摘要]  南京世界貿(mào)易中心5A級(jí)寫字樓項(xiàng)目結(jié)構(gòu)屋面高度為298. 6m，采用帶加強(qiáng)層的鋼框架．鋼筋混凝土核心筒混合結(jié)構(gòu)體系，外圍框架柱采用鋼管混凝土柱。介紹了結(jié)構(gòu)選型與布置、結(jié)構(gòu)風(fēng)洞試驗(yàn)、基于性能化目標(biāo)的結(jié)構(gòu)各階段抗震設(shè)計(jì)、靜力與動(dòng)力彈塑性分析以及加強(qiáng)層優(yōu)化設(shè)計(jì)，專題研究了樓板振動(dòng)舒適度、施工加載順序和關(guān)鍵節(jié)點(diǎn)的有限元分析等問(wèn)題。重點(diǎn)闡述了鋼框架、核心筒以及加強(qiáng)層設(shè)計(jì)等關(guān)鍵問(wèn)題和超限應(yīng)對(duì)措施，針對(duì)結(jié)構(gòu)在大震作用下的彈塑性行為進(jìn)行了深入的研究討論。采用多個(gè)空間及有限元模型對(duì)結(jié)構(gòu)的各方面性能進(jìn)行了詳細(xì)分析，結(jié)果表明結(jié)構(gòu)體系安全可靠并具有良好的抗風(fēng)抗震性能。
[關(guān)鍵詞]  超高層設(shè)計(jì)；鋼管混凝土；伸臂桁架；抗震性能化目標(biāo)；動(dòng)力彈塑性分析；關(guān)鍵節(jié)點(diǎn)有限元分析；風(fēng)洞試驗(yàn)
中圖分類號(hào)：TU318    文獻(xiàn)標(biāo)識(shí)碼：A  文章編號(hào)：1002-848X(2012) Sl-0047-07

Seismic structural analysis and design of Nanjing World Trade Center building exceeded code-linut
Chen Tao, Sun Yanping, Li Hongyu
( AECOM Ltd.,  Shanghai 200040,  China)

Abstract: Nanjing World Trade Center 5A level office tower's structural height is 298.6m.  The super high-rise building adopts a hybrid structure system with steel frame and reinforced concrete corewall, and perimeter columns are concrete filled steel tube columns. Structural system selection and arrangement, wind tunnel test, structural seismic design based on performance-target method and static & elasto-plastic analysis were mainly introduced. Special topics were carried out including slab vibration analysis, construction sequence modeling and key-connection FEA analysis. The designs exceeding code-limitation of steel frame, corewall, story with outrigger and belt truss were detailed presented with structural measures. The structure elasto-plastic behavior under large earthquake was focused on and deeply discussed. In summary, the office tower has not only sufficient safety and reliable structure system, but also excellent wind and seismic resistance ability.
Keywords: super lugh-rise building design; concrete filled steel tube column; steel outrigger and belt truss; seisnuc performance target; elasto-plastic time-history analysis; key-joint finite element analysis; wind tunnel test