施工技术 2017年9月下 78 CONSTRUCTION TECHNOLOGY 第46卷第18期 D0I:10.7672/5j52017180078 津湾广场9号楼下挂双悬挂层重型转换桁架 安装与定位技术 杨艳超，郑世超，郑吉成，车向男，谢菁彪 (中建城市建设发展有限公司，北京100037) [摘要]津湾广场9号楼8层转换桁架安装工程，承接9层以上及7层以下受力转换，结构重要：整体桁架距地面高 度为32.4m 且单体构件质量大增加了吊装及安装难度；节点复杂，超宽超重构件数量较多，焊接难度大，50mm以 上的钢板对接焊缝占该部位焊缝的8%，极易产生焊接残余应力.通过进场前预拼装校核尺寸，安装前预排构件 顺序精确定位，安装后全过程应力监测尺寸复核等措施，减小了桁架安装定位误差，保证了安装质量及进度. [关键词]高层建筑：转换桁架；预拼装；数值模拟；安装；定位：偏差 [中图分类号]TU974;TU758.11 [文献标识码]A [文章编号]1002-8498(2017)18-0078-04 Installation and Location Technology of Heavy Conversion Truss Suspended Double Layers Structure in Jinwan Square No.9 Building YANG Yanchao ZHENG Shichao ZHENG Jicheng CHE Xiangnan XIE Jingbiao CSCEC City Construction Development Co.Lad.Beijing 100037 China) Abstract:The No.8 layer conversion truss installation project of Jinwan Square No.9 Building takes force transformation above No.9 layer and below No.7 layer its structure is important.The whole truss is 32.4m from the ground and the large monomer ponent weight increases the difficulty of hoisting and installation.The nodes are plex and a large number of ultra wide overweight members made welding difficult.The butt weld of the steel plate above 50mm accounts for 80%of the weld seam of this part it is easy to produce welding residual stress.Through the pre-assembly and size checking sequence pre- arranged of ponents of precise positioning the whole process monitoring of stress after installation redueed the positioning error of truss installation ensured the quality and ...
津湾广场9号楼下挂双悬挂层重型转换桁架安装与定位技术.pdf
