2013年1月下施工技术 第42卷第2期CONSTRUCTION TECHNOLOGY31
大跨度大吨位型钢转换桁架高空滑移提升技术 孙兴春'，苏源'，卢庆'，杜凯² （1.南通海洲建设集团有限公司，江苏海安226600；2.新疆中秦化学股份有限公司，新疆乌鲁木齐830009） 【摘要】结合新疆某工程介绍了大跨度、大吨位型钢转换桁架在普通大型机械无法作业情况下，高空利用桁架对称 特性，自承载式分块滑移和提升完成桁架吊装。
即横向桁架作为滑移支架，纵向桁架分块在横向桁架上滑移，然后 利用就位的纵向桁架柱作为支撑点，在柱顶设置钢绞线千斤顶，利用固定在纵向桁架两侧柱顶的钢绞线千斤顶将 纵向桁架提升至设计高度，完成析架吊装。
[关键词］钢结构；转换桁架；滑移；提升；千斤顶 【中图分类号】TU758.1【文献标识码】A[文章编号]1002-8498(2013）02-0031-04 Sliding and Lifting of the Large-span and Large-tonnage Steel Transfer Truss at High Altitude Sun Xingchun', Su Yuan', Lu Qing', Du Kai² (1.Nantong Haizhou Construction Group Co.，Ld.，Haian,Jiangsu 226600,China; 2.Xinjiang Zhongtai Chemical Co.，Lid.，Urumgi，Xinjiang 830009,China) Abstract;The entry hall of Hefei Lakeshore International Convention and Exhibition Center is a space structure with large-span special-shaped steel pipe arch trusses.According to the characteristics of this project and the key points of construction technology， it was decided that the structural ponents were fabricated in the factory in bination with site assembly.On site，the structural ponents were lifted by support jig to the air and assembled in the air. The roof was installed using synchronously and symmetrically unloading method.The installtion procedure was determined through the working condition analysis. The key points for the hoisting of the truss beam and closure were studied. The unloading numerical modeling and construction monitoring were performed to the entire construction procedure.The numerical modeling results showed agreement with the monitoring values. Key words:steel structures; transfer truss; sliding; lifting; jack 1工程概况H1200×500×30×50焊接H型钢及截面为450mm 新疆中泰化学科技研发中心，建在乌鲁木齐市x450mm×30mm箱形腹杆组合而成的焊接结构， 开发区，为型钢混凝土结构，地下3层，地上16层。
跨度为18m和16m两种，腹高均为5.2m。
转换桁 建筑物中部1~5层为中空回廊，跨度18m×16m，架本体由工厂完成制作，由于转换桁架与钢柱的连 该部位6层以上为钢筋混凝土梁板。
在A～E轴，接采用焊接接头，其接头形式均为T形接头且板厚 ④~轴标高-12.15～25.12m为型钢混凝土柱，度大，如果采用现场手工焊接，受焊接方法及空间 其中③，轴型钢柱截面为700mm×700mm中字位置的制约，无法满足焊接线能量的输人而导致冷 柱；④，②轴型钢柱截面为600mm×600mm中字柱，裂纹的产生，因此必须由埋...
