超高空单边偏心桁架连廊施工技术  

Construction Technology of Super High Altitude Unilateral Eccentric Truss Corridor

作　　者：王永刚 苏铠 李鑫[1,2] 黄云 阙荣 罗琦曦 WANG Yonggang;SU Kai;LI Xin;HUANG Yuni;QUE Rongi;LUO Qixi(China Construction Second Engineering Bureau Co.,Ltd.Southern China Branch,Shenzhen,Guangdong 518048,China;China State Construction Second Engineering Bureau Sunshine Intelligent Manufacturing Co.,Ltd.,Heyuan,Guangdong 517373,China)

机构地区：[1]中国建筑第二工程局有限公司华南分公司,广东深圳518048 [2]中建二局阳光智造有限公司,广东河源517373

出　　处：《建筑施工》2021年第9期1777-1779,1785,共4页Building Construction

摘　　要：结合工程实际,介绍了超高空单边偏心桁架连廊的施工技术。从安全、经济、可行等方面综合比较了3种施工方案的优缺点,最终选择了低区整体提升,高区桁架体系提升与散拼结合法安装方法,突破了施工场地条件限制,有效解决了大跨度单边偏心桁架结构施工过程稳定性差的难题,缩短了工期,降低了高空作业风险,并通过使用有限元软件模拟连廊拼装、提升等过程,控制了结构变形,提高了施工精度,确保了施工质量与安全,为以后同类型项目施工提供了借鉴。Combined with engineering practice,the construction technology of super high altitude unilateral eccentric truss corridor is introduced.The advantages and disadvantages of the three construction schemes are comprehensively compared from the aspects of safety,economy and feasibility.Finally,a combined installation method of overall lifting at low area,truss lifting at high attitude and loose splicing is selected,which breaks through the restrictions of construction site conditions,effectively solves the problem of poor stability in the construction process of long-span unilateral eccentric truss structure,shortens the construction period and reduces the risk of high-altitude operation,By using the finite element software to simulate the process of corridor assembly and lifting,the structural deformation is controlled,the construction accuracy is improved,and the construction quality and safety are ensured,which provides a reference for the construction of similar projects in the future.

关 键 词：偏心钢桁架 方案比选 施工力学 有限元分析 

分 类 号：TU758[建筑科学—建筑技术科学]