河北省迁安市北二环滦河大桥为下承式钢管混凝土拱桥,文章以该桥为背景介绍了上部结构施工监测的基本方法,并采用MIDAS/CIVIL建立有限元模型,模拟了整个施工过程。监测数据和计算结果表明,该桥成桥状态时的拱肋线形、拱肋应力、系梁应力以及吊杆张力等均在施工控制范围内,实测值与计算值较为接近。所述监测方法和计算手段可供同类桥型的施工控制参考。 The North Second Ring Luan River Bridge in Qian’an City, Hebei Province is a through-going CFST arch bridge. Based on the bridge, the paper introduces the basic method of the superstructure construction monitoring. The finite element model is established by MIDAS / CIVIL to simulate the whole construction process . The monitoring data and calculation results show that the arch rib shape, arch rib stress, tie beam stress and boom tension are all within the construction control range when the bridge is in the bridge state, and the measured values ​​and the calculated values ​​are close to each other. The monitoring method and calculation method can be used for construction control reference of similar bridge type.