2015年10月下 施工技术 第44卷第20期 CONSTRUCTIONTECHNOLOGY 81 DOI:10. 7672/sgjs2015200081 某机库钢结构网架屋盖整体提升 施工关键技术研究 王涛'，廖维张²，马长涛3 (1.北京市建筑工程研究院有限资任公司，北京100039；2.北京建筑大学土木与交通工 程学院，北京100044；3.北京城建集团建筑工程总承包部，北京100088） [摘要】以某机库钢结构网架屋盖整体提升工程为例，提出了大跨度空间网架结构提升点布置的影响因素，通过对 5种提升点布置方案的比选确定了最终的提升点数量及位置。
归纳出了此类工程典型不同步工况选取的三点原则 并提出了一系列的同步控制措施，对机库网架屋盖被提升部分建立完整的有限元模型，运用有限元软件MIDAS进 行不同步工况及提升点失效工况的计算，分析两类工况下结构应力及变形的响应规律，根据计算结果提出了被提 升结构的加固措施及杆件替换方案。
根据整体计算结果设计合理的提升支撑架以及下提升点工装，并应用有限元 软件ANSYS对提升支撑架、下提升点及被提升结构部分连接节点和杆件进行验算校核，充分保证结构的安全。
对 卸载阶段边界条件的瞬间变换进行了模拟计算，确保了卸载阶段施工的安全。
[关键词】钢结构；网架；屋盖；提升；施工技术 [中图分类号】TU758【文献标识码】A [文章编号]1002-8498(2015）20-0081-05 Research onKey ConstructionTechnologyfor Integral Lifting ofSteelSpaceTrussRoofofanAircraftHangar Wang Tao'，Liao Weizhang²，Ma Changtao? （1.BejngBuildingConstructionResearchInstiute，Bejing100039，China;2.SehoolofCiviland Transportation Engineering，Bejing Universty ofCivilEngineering and Architeture，Bejing10044, China;3.Construction General Contracting Division，Bejing Urban Construction Group Co.，Lud.，Beijing 100088，China) AbstractBasedonthewholeliftingof steel space trussroofof anaircraft hangarseveralfactorsof lare span spatial lattice were put forward， which can influence the arrangement of lifting points.The number and location of lifting points were determined finally through paring five schemes,and three principles authors establish the plete finite element model for the steel space truss roof, calculate two kinds of adverse conditions by the software MIDAS, analyze the response law of of stress and deformation under each kind of condition,According to the result of calculation,They put up suitable measures to strengthen the structure and design reasonable supporting frame and lower lifing frock,meanwhile，calculate and check the stress and deformation of the supporting frame， the lower lifting frock and the connection parts， so as to fully guarantee the safety of the structure. Through simulating the transform of boundary condition, it guarantee...
