2013年1月下 施工技术 第42卷第2期 CONSTRUCTION TECHNOLOGY 13 大跨度异形钢管拱桁架空间结构施工技术* 陈安英，王静峰，郑海堂2，邢文彬 (1.合肥工业大学土木与水利工程学院，安徽合肥230009； 2.中铁四局集团钢结构有限公司，安徽合肥230022) [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. [关键词]钢结构；桁架；安装；支撑胎架；卸载；监测 [中图分类号]TU391.3;TU758.1 [文献标识码]A [文章编号]1002-8498(2013)02-0013-04 Construction of Large-span Special-shaped Steel Pipe Arch Space Truss Chen Anying' Wang Jingfeng' Zheng Haitang2 Xing Wenbin' (1.College of Civil Engineering Hefei University of Technology Hefei Anhui 230009 China; 2.Steel Structure Co. Lad.of CTCE Group Hefei Anhui 230022 China) Abstract: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. Key words:steel...
大跨度异形钢管拱桁架空间结构施工技术.pdf
