2022世界杯主场馆钢结构卸载施工及监测技术研究

Unloading and Monitoring Technology of Steel Structure in Lusail Stadium for 2022 World Cup

针对2022年卡塔尔世界杯主场馆卢赛尔体育场的结构形式特点,制定主体钢结构的施工方案,对主体钢结构卸载点进行受力分析,合理优化卸载千斤顶的选型与布置形式。根据卸载模拟计算和应力变形分析结果,将卸载分为6个阶段,确定先水平后竖向的卸载顺序,并详细阐述各阶段每一步的卸载方法。重点对卸载监测的关键技术进行研究,建立了一套涵盖全站仪、应力计、高精度3D激光扫描仪和直尺的卸载监测方案,并分析各监测点的选取原则以及各监测方法的实施要点。

In accordance with the structural characteristics of the Lusail Stadium,the main stadium of Qatar World Cup in 2022,a construction plan for the main steel structure is formulated.The force analysis of the unloading point of the main steel structure is carried out,and the selection and arrangement of unloading jacks are reasonably optimized.According to the results of unloading simulation calculation and stress and deformation analysis,unloading is divided into 6 stages.The unloading sequence from horizontal structure to vertical structure is determined,and the unloading method for each step of each stage is explained in detail.Focusing on the research on the key technologies of unloading monitoring,a set of unloading monitoring programs covering total stations,stress monitors,high-precision 3D scanners and rulers are established.Finally,the selection principle of each monitoring point and the key technology of each monitoring method are analyzed.