- 摘 要
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（中信建筑設(shè)計研究總院有限公司， 武漢 430014）
［摘要］某門形建筑的連接體高達(dá)14層（包含屋面），轉(zhuǎn)換桁架跨度為50-4m。結(jié)合概念設(shè)計和計算分析，對該大跨高位轉(zhuǎn)換桁架形式進(jìn)行多方案比選，確定了在7～9層和13～15層設(shè)置完整跨層鋼骨混凝土轉(zhuǎn)換桁架、在9～13層設(shè)置部分斜腹桿的轉(zhuǎn)換結(jié)構(gòu)方案。針對選定的轉(zhuǎn)換結(jié)構(gòu)方案，采用施工全過程模擬分析，比較了不同施工方案對應(yīng)的轉(zhuǎn)換結(jié)構(gòu)內(nèi)力大小。結(jié)果表明，轉(zhuǎn)換桁架的鋼骨在地面焊接成鋼骨桁架后再整體提升的施工方案更合理。根據(jù)施工模擬分析結(jié)果優(yōu)化了結(jié)構(gòu)布置，設(shè)計出了簡單可靠的節(jié)點構(gòu)造。并介紹了按實際施工步驟實現(xiàn)施工模擬分析的計算方法以及轉(zhuǎn)換桁架的施工要點。
［關(guān)鍵詞］轉(zhuǎn)換桁架； 概念設(shè)計； 計算分析； 結(jié)構(gòu)選型； 施工模擬； 施工方法
中圖分類號：TU318文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2018)03-0019-06
Design and construction of a 50-4m-span transfer truss of portal shaped high-rise building
Qiu Jian, Liao Gen, Yu Hong
(Citic General Institute of Architectural Design and Research Co., Ltd, Wuhan 430014, China)
Abstract:The connecting body of a portal shaped building is up to 14 layers (including the roof), and the span of the transfer truss is 50-4m. Combined with the conceptual design and calculation analysis, several structural systems of large-span high-position transfer truss were compared and selected. It is determined that the complete steel reinforced concrete transfer truss is set up in the 7th～9th layer and the 13th～15th layer crossing the stories, and the transfer structure scheme of setting part oblique web members in the 9th～13th layer. According to the selected transfer structure scheme, the whole process of construction simulation analysis was used to compare the internal forces of the transfer structure corresponding to different construction plans. The results show that the construction scheme is more reasonable to weld the transfer truss's steel section into steel truss on the ground before integral lifting. The structural layout was optimized according to the results of the construction simulation analysis, and a simple and reliable joint structure was designed. The calculation method of the construction simulation analysis according to the actual construction steps was also introduced and the key points of the construction of the transfer truss were introduced.
Keywords:transfer truss; conceptual design; calculation analysis; structural system selection; construction simulation; construction method
作者簡介：邱劍，碩士，教授級高級工程師，一級注冊結(jié)構(gòu)工程師，英國皇家特許結(jié)構(gòu)工程師，Email：21244113@qq.com。
