四川省洪洲公路大桥的主跨是100m的中承式集束钢管混凝土拱桥,拱高25m,拱圈由两肋组成,每肋由三根变截面圆钢管构成,采取拱肋高空作业吊装拼装方案.该文对吊装方案作了检算,详述了吊装拼装的施工方法,并对吊装的定位控制和拱助的线型控制等技术作了介绍.“,”The main span of the Hongzhou highway major bridge in Sichuan Province is a half-through composite steel tube concrete arch bridge with a length of 100m and a height of 25m. The arch circle consists of two ribs. Each rib was constructed by three circular steel tubes with variable cross-sec tions. The arch ribs were assembled by hoisting and fabricated in high-altitude. The paper makes cal culation and check for the hoisting scheme,describes the construction method in detail,and introduces the techniques for its position control and the curvature control of the arch ribs.