摘要
合肥滨湖国际会展中心登录大厅为大跨度异形钢管拱桁架空间结构。根据工程特点和施工技术关键点,采用工厂结合现场制作单元构件,采用有支撑胎架高空分段吊装安装、同步对称卸载方法进行屋盖结构施工。通过安装工况分析,确定了整体安装流程,研究了桁架梁吊装及合拢技术要点;通过比较分析,优化了卸载施工方案。在施工技术分析基础上,对施工全过程进行了数值模拟及施工监测,结果表明分析结果与现场监测值吻合较好。
Taking a project in Xinjiang as an example,this paper introduced the installation of a large-span and large-tonnage steel transfer truss,which was unable to be constructed using ordinary large-scale machines.Making full use of symmetrical characteristics of the truss at high altitude,the installation was finished by self-bearing sliding and hoisting.Specifically,the transverse truss was used as a sliding bracket and the longitudinal truss blocks slid on it to the specified locations.Then,the longitudinal truss columns that were already positioned were used as supports,above which,the hoisting steel strand jacks were fixed.These steel strand jacks were then used to lift the longitudinal trusses to their design altitudes to finish the installation.
出处
《施工技术》
CAS
北大核心
2013年第2期13-16,共4页
Construction Technology
基金
中央高校基本科研业务费专项资金资助
关键词
钢结构
桁架
安装
支撑胎架
卸载
监测
steel structures
trusses
installation
support jig
unloading
monitoring
