既有建筑上方的内置钢桁架悬挑混凝土墙施工技术  

Construction Technology of Built-in Steel Truss Cantilever Concrete Wall Above Existing Building

作　　者：李志青 张波 刘亮 冯杵兴 熊超 LI Zhiqing;ZHANG Bo;LIU Liang;FENG Chuxing;XIONG Chao(Dongguan Industrial Investment Holdings Group Co.,Ltd.,Dongguan 523000,Guangdong,China;Dongguan Guancheng Construction Engineering Co.,Ltd.,Dongguan 523000,Guangdong,China;Dongguan Institute of Building Research Co.,Ltd.,Dongguan 523000,Guangdong,China;Shilong Town Construction Project Center Co.,Ltd.,Dongguan 523000,Guangdong,China)

机构地区：[1]东莞实业投资控股集团有限公司,广东东莞523000 [2]东莞市莞城建筑工程有限公司,广东东莞523000 [3]东莞市建筑科学研究院有限公司,广东东莞523000 [4]石龙镇工程建设中心,广东东莞523000

出　　处：《建筑施工》2023年第12期2426-2428,共3页Building Construction

基　　金：广东省住房和城乡建设厅2021年科学技术计划项目(2021-K9-363784)。

摘　　要：为解决既有建筑与大型悬挑混凝土墙施工的竖向支撑、卸载位移过大、悬挑混凝土墙底部侧边模板问题,以“中国举重博物馆项目(一期)项目”为依托,研究既有建筑上方的内置钢桁架悬挑混凝土墙施工技术,利用下方既有建筑屋面做钢结构支撑,在既有建筑上方设置侧向悬臂临时支撑以满足对悬挑钢桁架的支撑及施工。同时通过卸荷原理和转折钢垫片等方法,进一步减少施工位移并解决混凝土型钢底部的模板水平固定问题。To solve the problems of vertical support,excessive unloading displacement,and side formwork at the bottom of the cantilever concrete wall in the construction of existing buildings and large cantilever concrete walls,based on the“China Weightlifting Museum Project(Phase I)”,the construction technology of the built-in steel truss cantilever concrete wall above the existing building is studied,and the roof of the existing building below is used as steel structure support and the lateral cantilever temporary support above the existing building is Installed to meet the support and construction requirements for the cantilever steel truss.At the same time,the methods such as unloading principle and turning steel gasket are used to further reduce construction displacement and solve the problem of horizontal fixation of the formwork at the bottom of the concrete section steel.

关 键 词：既有建筑 内置钢桁架悬挑混凝土墙 侧向支撑 卸载位移 

分 类 号：TU755[建筑科学—建筑技术科学]