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（1 香港華藝設(shè)計(jì)顧問（深圳）有限公司， 深圳 518057； 2 廣州大學(xué)土木工程學(xué)院， 廣州 510006）

［摘要］深圳工商銀行大廈的裙樓三面懸挑，其中南面懸挑尺寸為11-35m，依靠六榀單層懸挑桁架來承受懸挑荷載。懸挑桁架的斜腹桿呈V形且未往跨內(nèi)延伸，這給結(jié)構(gòu)工程師帶來很大的挑戰(zhàn)。深入研究V形腹桿懸挑桁架的傳力模式，并提出懸挑部位的相應(yīng)設(shè)計(jì)方法。通過抗連續(xù)倒塌分析、施工過程驗(yàn)算及節(jié)點(diǎn)有限元模擬等驗(yàn)證懸挑部位結(jié)構(gòu)的承載能力；樓蓋舒適度分析結(jié)果表明，懸挑部位設(shè)計(jì)能滿足辦公建筑舒適度要求；懸挑桁架的極限承載力分析結(jié)果也表明其承受豎向荷載能力有較高的冗余度。

［關(guān)鍵詞］深圳工商銀行大廈； V形桁架；傳力模式；設(shè)計(jì)方法；極限承載力分析

中圖分類號(hào)：TU313，TU318-2文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2016)13-0007-06

Analysis and design on podium cantilevered trusses of Shenzhen ICBC building

Lin Chaowei1,2，  Wang Xingfa1， Xia Xiyao1， Hu Tao1， Guo Hong1， Wu Yan1

（1 HongKong HuaYi Design Consultants（Shenzhen）Ltd.， Shenzhen 518057， China;2 School of Civil Engineering, Guangzhou University, Guangzhou 510006, China）

Abstract:The podium of Shenzhen ICBC building is supported by cantilever on three sides. The south cantilever is 11-35 metres which relies on six cantilevered trusses to undertake the load. Diagonal web member of cantilevered truss is V-shaped and does not extend to inside, which poses a great challenge to structural engineers. The force transmission mode of this V-shaped diagonal web member was analyzed, and the corresponding design of cantilevered parts was proposed. Finally, the carrying capacity of cantilevered parts was verified in such ways as anti-progressive collapse analysis, construction process checking and finite element node simulation. Floor comfort analysis shows that the design of cantilevered parts of this building can meet comfort requirements. In addition, the  ultimate capacity analysis results of cantilevered truss also show that cantilevered truss can resist vertical load, and even has enough redundancy.

Keywords:Shenzhen ICBC building; V-shaped truss; force transmission mode; design method; ultimate capacity analysis

作者簡(jiǎn)介：林超偉，博士研究生，高級(jí)工程師，一級(jí)注冊(cè)結(jié)構(gòu)工程師，Email：wei65125036@163.com。