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（1 北京市建筑設(shè)計(jì)研究院有限公司， 北京 100045； 2 中建三局集團(tuán)有限公司， 武漢 430040）

［摘要］騰訊北京總部大樓采用框架-剪力墻體系+外圈巨型鋼桁架+局部鋼結(jié)構(gòu)的結(jié)構(gòu)方案，屬于復(fù)雜的鋼-混凝土混合結(jié)構(gòu)。在整個(gè)建筑外圍設(shè)置圍合的巨型鋼桁架，三個(gè)切角部位為最大長(zhǎng)度達(dá)81m的切角型大懸挑結(jié)構(gòu)。主要闡釋本工程在施工過(guò)程中存在的大懸挑鋼結(jié)構(gòu)變形補(bǔ)償預(yù)調(diào)值、施工卸載與重要構(gòu)件應(yīng)力監(jiān)測(cè)等關(guān)鍵問(wèn)題。對(duì)整體結(jié)構(gòu)施工過(guò)程進(jìn)行了數(shù)值模擬研究，并將數(shù)值模擬結(jié)果與監(jiān)測(cè)結(jié)果進(jìn)行了對(duì)比，結(jié)果表明數(shù)值模擬結(jié)果與監(jiān)測(cè)結(jié)果符合程度較好。

［關(guān)鍵詞］大懸挑結(jié)構(gòu)； 施工過(guò)程模擬； 變形預(yù)調(diào)值； 施工卸載； 應(yīng)力監(jiān)測(cè)

中圖分類號(hào)：TU398文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2019)18-0115-05

Research on key problems of construction for Tencent (Beijing) Headquarters Building

Shu Weinong1, Zhu Zhongyi1, Ge Dongdong1, Liu Mingxue1, Fan Dongdong2, Qi Yue1, Guo Chenxi1

(1 Beijing Institute of Architectural Design, Beijing 100045, China; 2 China Construction Third Engineering Bureau Co., Ltd., Wuhan 430040, China)

Abstract:Tencent (Beijing) Headquarters Building is a complex steel-concrete mixed structure which adopts frame shear wall structural system with outer giant steel truss and local steel structure. Peripheral surrounding of the structure is enclosed giant steel trusses. Three large cantilever steel structure with the maximum length of 81 meters is located in three incisal corner cut. During the construction, some key problems, such as preset construction deformation value of large cantilever steel structure, construction unloading and stress monitoring of important components were explained. Numerical simulation study of construction process for the whole structure was performed. Comparative analysis of the results of numerical simulation and monitoring was carried out. The numerical simulation results were in good agreement with the field monitoring results.

Keywords:large cantilever structure; numerical simulation of construction process; preset deformation value; construction unloading; stress monitoring

通訊作者：閤東東，博士，一級(jí)注冊(cè)結(jié)構(gòu)工程師，Email：gddhust@163.com。