- 摘 要
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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 上海寶冶集團(tuán)有限公司， 上海 200941）
［摘要］針對采用混凝土屋面的大跨度重型桁架屋蓋結(jié)構(gòu)，提出了地面拼裝桁架、澆筑完混凝土屋面板后，再進(jìn)行整體提升的施工方法，并結(jié)合工程實(shí)例，進(jìn)行了施工全過程設(shè)計(jì)和構(gòu)造研究。根據(jù)施工方案，對結(jié)構(gòu)通過單元逐步激活技術(shù)進(jìn)行了階段施工仿真分析，分析中同時(shí)考慮了施工期間溫度因素和不同步提升因素對結(jié)構(gòu)的影響，并根據(jù)施工分析結(jié)果確定了關(guān)鍵節(jié)點(diǎn)構(gòu)造、后澆帶劃分等設(shè)計(jì)因素。實(shí)測值與理論計(jì)算值符合較好，為鋼結(jié)構(gòu)屋蓋施工提供了科學(xué)依據(jù)。
［關(guān)鍵詞］大跨度空間結(jié)構(gòu)； 重型桁架屋蓋； 施工仿真分析； 整體提升
中圖分類號：TU391， TU741-1文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2017)18-0051-06
Construction analysis on integral lifting of large-span heavy truss roof sturucture
Zhen Wei1, Sheng Ping1, Tao Fubing2, Wang Yi1, Zhang Moxun1
(1 Beijing Institute of Architechtural Design, Beijing 100045， China; 2 Shanghai Baoye Group Co., Ltd., Shanghai 200491， China)
Abstract:Aiming at the large-span heavy truss roof structure with concrete roof slab, the construction method of integral lifting after assembling truss and pouring concrete slab on the ground was proposed. Combining with practical projects, construction full-process design conducted and details were studied. According to the construction scheme, synchronous integral lifting of the steel roof was analyzed with technique activating members step-by-step． The effects of temperature and unsynchronous lifting during construction period on the structure were studied. Construction details of key nodes and post-pour strips were determined according to the simulation analysis results. The measured data coincide well with analysis result, which provides scientific ground to the construction of large-span steel roof.
Keywords:large-span spatial structure; heavy truss roof structure; construction simulation analysis; integral lifting
作者簡介：甄偉，碩士, 教授級高級工程師，Email：zhenwei@biad.com.cn。
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