针对某大跨径钢管混凝土(简称CFST)拱桥的斜拉扣挂系统扣索多、部分扣索角度小,调索可操作性差的实际情况,将扣索一次张拉到位、通过预拱度实现线形控制的迭代优化算法应用于拱肋吊装的线形控制和索力计算。为克服这种方法难以调整主拱肋内力和预抬高量可能偏大的缺陷,并注意到合龙前后拆除扣索的时间、顺序和方法的差异会对拱肋的线形、内力产生影响,提出修正拆扣方案,将部分扣索调整到合龙之前拆除,并对几种可行方案进行了分析和优化比选,确定了一个最佳的,更利于施工控制的方案。 Aiming at the fact that the cable-stayed buckling system of a large-span CFST arch bridge has many buckles, some buckling angles are small and the operability of cable retrieval is poor, the buckle is once stretched in place by the pre-camber Application of Linear Control Iterative Optimization Algorithm in Linear Control and Cable Force Calculation of Arch Rib Hoisting. To overcome this method, it is difficult to adjust the internal force of the main arch rib and the amount of pre-lift may be too large defects, and noted that before and after closing the deduction cord time, the order and method differences will affect the arch rib internal force, the proposed Amendment of the demolition buckle program will be part of the deduction adjusted to closure before demolition, and several feasible programs were analyzed and optimized comparison to determine an optimal, more conducive to construction control program.