钢管拱肋节段吊装定位是钢管混凝土拱桥线形控制的重要一环,其定位技术的高低关系到成桥线形乃至结构受力。结合赣州市章江大桥钢管拱节段吊装的工程实际,简述从工厂制作到现场节段安装的线形控制和精确定位方法,同时深入分析控制网的精度以及放样施测的误差精度。 The steel pipe arch rib hoisting and positioning is an important part of the linear control of CFST arch bridge, and its positioning technology is related to the forming of the arch bridge and even the structure. Combined with the engineering practice of steel tube arch segment hoisting in Ganzhou Zhangjiang River Bridge, the article introduces the linear control and precise positioning method from the factory to the segment installation. At the same time, the precision of the control network and the error precision of the stakeout are deeply analyzed.