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（中建鋼構(gòu)有限公司華南大區(qū)， 廣州 510640）
[摘要] 廣州東塔加強(qiáng)層核心筒鋼結(jié)構(gòu)伸臂桁架巨型節(jié)點施工具有構(gòu)件超重、節(jié)點形式復(fù)雜、厚板焊接多、受頂模、塔吊限制大等特點，對構(gòu)件安裝就位、焊接、測量校正以及變形控制造成極大影響。針對該結(jié)構(gòu)施工特點，擬定最優(yōu)分段方案，安排合理的安裝流程，選取科學(xué)的安裝工藝。配合全程施工模擬、厚板電加熱工藝、科學(xué)的測量校正方法，有效解決施工難點。
[關(guān)鍵字] 鋼結(jié)構(gòu)；伸臂桁架；巨型節(jié)點；頂模；施工模擬；電加熱
中圖分類號：TU74 文獻(xiàn)標(biāo)識碼：A 文章編號：
* 中建總公司課題（CSCEC-2010-Z-01-5-03）
作者簡介：肖杰，本科，助理工程師，Email：370691217@qq.com。
Construction of giant joints of outriggers in core tube of Guangzhou east tower
Xiao Jie， Ye Daiying， Wang Yongsheng， Zhong Hongchun， Xu Cong， Deng Deyuan
（China Construction Steel Structure Co. , Ltd. of Southern China District， Guangzhou 510640,china）
Abstract: The giant joints of outriggers in core tube in strengthened level of Guangzhou East Tower has certain characteristics such as heavy weight, complicated joints, thick plate welding, construction under constrain space due to formwork pushing and tower crane lifting radius and capacity, which all together make it difficult for site fitting up，welding, surveying, correction and deformation controlling. According to the characteristic of the joint and its construction condition, member segmentation and erection sequence have been scientifically optimized. With full-process construction simulation, electric heating and advanced surveying technology, the above-mentioned difficulties were effectively overcome.
Keywords: steel structure; outrigger; giant joint; pushing-up formwork; construction simulation; electric heating
參考文獻(xiàn)
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