Abstract: In order to research the method of adjusting the anchor-span cable force of the steel truss suspension bridge in the cable-forming stage, the existing problems in the control of the cable force of the suspension bridge were analyzed and the cable force control countermeasures were put forward. The results show that in the stage of cable strand erection, the linear control of side span is the main method. After the cable strand is erected, the support frame of splay saddle shall be released. The redistribution of cable force and the movement of splay saddle in the process of adjustment may not be considered when the force of anchor-span cable is adjusted after the main cable is erected. According to the elastic theory, the deviation of cable force can be transformed into the adjustment of cable strand length, which can quickly complete the adjustment of cable force and ensure the error to meet the monitoring requirements.

Key words: bridge engineering, splay saddle, anchor-span cable force, frequency method, elongation method, suspension bridge

摘要： 为研究钢桁梁悬索桥成缆阶段锚跨索力调整方法，对悬索桥锚跨索力控制存在问题进行了分析并提出了索力控制对策，结果表明：索股架设阶段以边跨线形控制为主，在索股架设完成后再解除散索鞍支撑架；主缆架设完成后对锚跨索力进行调整可不考虑调整过程中索力的再分配和散索鞍移动的影响；按照弹性理论将索力的偏差转化为对索股长度的调整，可快速完成索力调整并确保误差满足监控要求。

关键词: 桥梁工程, 散索鞍, 锚跨索力, 频率法, 伸长量法, 悬索桥