大跨度曲面网架结构卸载施工过程监测研究  

Research on Monitoring of Unloading Construction Process of Large Span Curved Grid Structure

作　　者：刘德斌 LIU Debin(BCEG No.4 Construction Engineering Co.,Ltd.,Beijing 100075,China)

机构地区：[1]北京建工四建工程建设有限公司,北京100075

出　　处：《施工技术（中英文）》2022年第11期97-99,103,共4页Construction Technology

基　　金：北京建工集团重点攻关项目:国航星空大讲堂施工监测及复杂节点施工工艺优化研究(RGGA140320200001)。

摘　　要：施工过程中,大型曲面网架结构杆件众多、高冗余度的结构形式,极易导致个别杆件施工质量把控不足,整体结构初始刚度存在明显质量缺陷。为避免该类问题发生,在星空大讲堂项目中,从实际问题出发,分析结构安装过程中各关键杆件及节点的受力和变形,并在结构卸载过程中监测关键点处的应力和变形,对比理论分析结果,探讨结构施工安装质量,避免安装初始缺陷过大的问题。The numerous component members and high degree of redundancy of large curved grid structure result in insufficient construction quality control of individual members and obvious quality defects in the initial stiffness of the overall structure.In order to avoid such problems,in the Star Lecture Hall project,starting from the practical problems,the stress and deformation of each key member and node in the process of structural installation are analyzed,and the stress and deformation of key points are monitored in the process of structural unloading.Then after comparing the theoretical results,the quality of structural construction and installation is discussed to avoid the problem of excessive initial defects in installation.

关 键 词：钢结构 曲面网架 卸载 有限元分析 模拟 监测 

分 类 号：TU318.1[建筑科学—结构工程]