结合三门峡黄河公路大桥连续刚构桥加固施工监控实践 ,介绍大跨连续刚构桥箱梁加固施工挠度变形、应力监测的方法 ,文中给出了监测的成果。该桥的加固效果良好 ,说明主梁监测方法和措施是有效的 ,监测数据可供其他大跨同类桥型加固时借鉴 Combining with the monitoring and control practice of continuous rigid frame bridge reinforcement construction in Sanmenxia Yellow River Highway Bridge, the paper introduces the method of monitoring the deflection and stress of box girder construction of long span continuous rigid frame bridge. The reinforcement effect of the bridge is good, indicating that the main girder monitoring methods and measures are effective, and the monitoring data can be used for reinforcement of other large-span similar bridges