讨论大跨度连续刚构桥上部构造施工中挠度变形的成因、监测的必要性、监测的理论与方法,并结合厦门厦门海沧大桥西航道140m连续刚构桥施工挠度变形监测的实践,验证上述理论,总结监测中应采取一些有效措施。该桥较好的合拢精度表明,上述理论和方法可供同类桥型施工监控时参照。 This paper discusses the causes of deflection deformation, the necessity of monitoring and the theory and method of monitoring during the structural construction of long-span continuous rigid frame bridge. Based on the practice of monitoring the deflection of the 140m continuous rigid frame bridge in Xishuangbanna of Xiamen Haicang Bridge, Theory, Summary Monitoring should take some effective measures. The better closing accuracy of the bridge shows that the above theories and methods are suitable for the monitoring of similar bridge construction.