大跨度钢结构整体提升关键问题分析  

Analysis of Key Problems about Integrated Lifting of Long-span Steel Structures

作　　者：梁存之[1] 潘从建[1] 赵基达[1] 冯大斌[1] 

机构地区：[1]中国建筑科学研究院,北京100013

出　　处：《建筑科学》2014年第11期9-15,共7页Building Science

基　　金："十二五"国家科技支撑计划课题"建筑结构绿色建造专项技术研究"(No.2012BAJ03B06)

摘　　要：大跨度钢结构整体提升具有施工效率高、无需安装高空重载支架与大型起重设备、减少高空作业、提升高度不受限制等优点,广泛应用于大跨度屋盖结构、高层建筑钢结构连廊等的建造与安装工程。通过对提升结构在提升阶段与一次成型状态下的边界条件、力学特点等的比较与分析,提出了结构分解、提升点的选取、杆件调整、稳定性处理、结构合龙等的基本原则与具体实施方式;根据对提升阶段结构力学性能的分析结果,提出了提升力确定的步骤与提升过程控制的选取方式;对刚性结构的提升、提升过程中的风振、胎架的检验等关键问题分别进行分析,并给出相应的解决方案。Integrated lifting of long span steel structures has the merits of high construction efficiency, needing no over load aerial support bracket or large hoisting equipments, reducing the work high above the ground and without restriction of distance, so it is widely used in the construction of long-span steel structures and corridors of high buildings. The basic principles and ways of implementing on structural decomposition, lifting points selection, members adjustment, stability proceeding, structural closure are proposed by comparison and analysis the boundary condition and mechanism of lifting stage with completion. The steps of determining lifting force and the ways of lifting control are presented by analyzing mechanical properties of lifting stage. Some key problems such as rigid structure lifting, flutter control during lifting and inspection of lifting frame are analyzed, and the solutions are put forward.

关 键 词：整体提升 连廊 合龙 稳定性 刚性结构 

分 类 号：TU393.3[建筑科学—结构工程]