中文摘要：

介绍了中承式钢管为劲性骨架混凝土拱桥吊杆更换过程中的施工监测,并探讨控制的目的、方法、监控影响因素及效果.通过对各个主要截面应力应变分析及吊杆更换过程及前后各吊杆处的相对高差的监测,并考虑温度效应对桥面线形的影响,确保主桥拱结构在吊杆更换施工过程中的安全可靠;其研究结果对桥梁吊杆更换监控及施工提供一定的参考。

英文摘要：

This article discusses the purpose,methods,factors and effectiveness of construction monitoring and control about half-through concrete-filled steel tube arch bridge with stiff framework in the process of suspender replacement.In order to ensure the safety and reliability of the main bridge construction in the process of suspender replacement,this paper analyses the thress and strain of each major cross-section and provides a monitor method of the relative height before and after the suspender replacement that consider the impact of the temperature of observation on the brideg linear deck.This research gives references to suspender replacement of bridge construction and monitoring.