钢-混凝土组合屋盖修复与改造设计  

Restoration and Retrofitting Design of Steel-concrete Composite Roof

作　　者：刘小燕 董三升[2] 雷拓[2] LIU Xiaoyan;DONG Sansheng;LEI Tuo(Shaanxi Construction Engineering Eighth Construction Group Co.,Ltd.,Xi’an,Shaanxi 710068,China;School of Civil Engineering,Chang’an University,Xi’an,Shaanxi 710061,China)

机构地区：[1]陕西建工第八建设集团有限公司,陕西西安710068 [2]长安大学建筑工程学院,陕西西安710061

出　　处：《施工技术（中英文）》2022年第17期121-125,共5页Construction Technology

基　　金：陕西省自然科学基础研究项目(2021JM-178)。

摘　　要：某6层钢筋混凝土框架结构顶部宴会厅钢-混凝土组合屋盖发生坍塌事故,结合检测鉴定、结构验算分析结果和现场施工条件,提出屋盖修复与改造设计方案。采用钢支架对原屋盖结构主钢梁进行提升,主钢梁位置恢复后继续使用。将原屋盖改造为双层金属复合板屋盖,重新设计屋盖支撑体系和主钢梁拼接节点,并对柱上牛腿进行加固补强。结果表明,本工程屋盖修复与改造设计方案切实可行,达到节约成本、保证结构安全的目的。The steel-concrete composite roof of a banquet hall on the top of a 6-story reinforced concrete frame structure collapsed. The restoration and retrofitting design scheme of roof is proposed according to the results of inspection and appraisal, structural calculation and the site construction conditions. Steel supports are used to lift the original roof main beam, and the beam will continue to be used after its position is restored. The original roof was transformed into a double-layer metal clad plate roof. The supporting system of the roof and the splicing nodes of main steel beams are redesigned, and the corbels on the columns are reinforced. The results show that the restoration and retrofitting design proposed in this paper is feasible, and the purpose of saving cost and ensuring structural safety is achieved.

关 键 词：屋盖 钢-混凝土结构 钢梁 坍塌 修复 改造 

分 类 号：TU391[建筑科学—结构工程]