卢赛尔体育场钢结构测量方法及精度控制

Measurement Method and Precision Control of Steel Structure for Lusail Stadium

卡塔尔卢赛尔体育场主体钢结构为由24对V形柱支承受压环的空间大跨结构,构件形状复杂。受压环连接鱼腹式环形张力索桁架,对精度要求较高,测量难度大。为控制受压环最终就位精度,在钢结构加工、现场拼装、吊装等阶段,针对不同条件,采用三维激光扫描和全站仪+自贴式反射片的测量方案。在最终就位阶段,为克服现场条件限制,结合两种测量方案优点,首创并应用了全站仪扫描法,达到了受压环精度控制要求。

The main steel structure of the Lusail Stadium in Qatar is a large-span space structure with 24 pairs of V-shaped steel columns supporting the compression ring,the shape of the members is complex.The compression ring is connected to the fish-bellied hoop tension cable truss,which has high accuracy requirements and is difficult to measure.In order to control the final positioning accuracy of the compression ring,the measurement schemes of three-dimensional laser scanning and total station+selfattached reflector are adopted respectively for different conditions in the stages of steel structure processing,on-site assembly and hoisting.In the final positioning stage,in order to overcome the limitations of on-site conditions,combined with the advantages of the two measurement schemes,the total station scanning method was pioneered and applied to meet the accuracy control requirements of the compression ring.