摘要
为解决超大跨度钢桁架屋盖在复杂边界条件、超长提升距离及多吊点协同控制中的系统性难题,文章依托厦航广场项目,提出分区整体提升与结构加固相结合的系统方法,通过设置非提升预装区与提升区交叉施工,优化26个吊点布置,采用液压同步控制技术,最终实现1700 t重的屋盖在70.3 m高度上匀速提升,并完成抗扭与传力加固作业。经SAP2000软件模拟表明,屋盖最大下挠值为104.0 mm,应力比为0.736,关键节点应力低于295 MPa,表明结构安全、可控。该研究成果对类似城区大跨度屋盖施工具有参考价值。
In order to solve the systematic problems of extra-large span steel truss roof system in complex boundary conditions,super-long lifting distance and multi-lifting point coordination,this paper proposes a systematic method combining zoned integral lifting and structural reinforcement based on Xiamen Air Plaza project.By setting up cross construction of non-lifting pre-installed area and lifting area,optimizing the layout of 26 lifting points,and adopting hydraulic synchronous control technology,the 1700 t roof system is finally lifted at a uniform speed at a height of 70.3 m,and the torsionresistance and force transfer reinforcement operations are completed.The SAP2000 software simulation shows that the maximum deflection of the roof system is 104.0 mm,the stress ratio is 0.736,and the stress at the key nodes is less than 295 MPa,indicating that the structure is safe and controllable.The research results have reference value for the construction of large-span roof system in similar urban areas.
作者
刘国峰
LIU Guofeng(Fuzhou Construction Engineering Quality Supervision Station,Fuzhou 350008,Fujian,China)
出处
《工程技术研究》
2025年第19期5-8,共4页
Engineering and Technological Research
关键词
超大跨度屋盖
钢桁架
数值模拟
液压同步
extra-large span roof system
steel truss
numerical simulation
hydraulic synchronization
