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(中建鋼構(gòu)有限公司， 深圳 518040)
［摘要］塔冠安裝是超高層鋼結(jié)構(gòu)施工的一大難點(diǎn)，結(jié)合華潤總部大廈塔冠結(jié)構(gòu)特點(diǎn)及預(yù)定施工方案，設(shè)計了一套由桁架片拼接而成的環(huán)形支撐胎架系統(tǒng)。采用MIDAS/Gen有限元計算軟件建立了塔冠結(jié)構(gòu)與支撐胎架的整體模型，按正裝分析法進(jìn)行了詳細(xì)的施工仿真分析，并對向陽、背陽情況進(jìn)行局部溫差工況計算。分析結(jié)果表明，在施工全過程中，結(jié)構(gòu)與支撐胎架應(yīng)力及變形在《鋼結(jié)構(gòu)設(shè)計規(guī)范》（GB 50017—2003）允許范圍內(nèi)，驗證了施工方案的可行性，為方案的選擇提供了理論指導(dǎo)。
［關(guān)鍵詞］華潤總部大廈; 塔冠； 施工； 仿真分析； 支撐胎架
中圖分類號：TU745-2文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2016)16-0007-04
Tower cap construction simulation analysis and support design for China Resources Headquarters Building
Deng Deyuan, Heng Wuhao, Tang Qichao, Fu Juecong, Zhou Maochen
(China Construction Steel Structure Co., Ltd., Shenzhen 518040, China)
Abstract:Tower cap installation is one of the difficulties in construction of super high-rise steel structure. Combined with the structure characteristics and the predetermined construction scheme of tower cap in China Resources Headquarters Building, a circular support bracket system jointed by trusses was designed for construction. The tower cap structure model and the whole support bracket model were established by MIDAS/Gen and the detailed construction simulation analysis were carried out based on the forward analysis method, while the local temperature difference calculation under conditions of facing the sun or in shadow were made. The analysis results show that the stress and deformation of the structure and support bracket in the installation process were in allowable range of the Code for design of steel structures(GB 50017—2003), and it proves the feasibility of the construction scheme, which provide theoretical guidance for scheme selection.
Keywords:China Resources Headquarters Building; tower cap; construction; simulation analysis; support bracket
作者簡介：鄧德員，碩士，工程師，Email:hgdeyuan@163.com。
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