关键词: 系杆拱桥, 有限元分析, 施工监控

Abstract: For Xucun super large bridge with a calculated span of 88m, the construction scheme of beam before arch and support is adopted. In order to ensure the safety of the bridge construction process and provide calculation basis for construction monitoring, taking full account of the factors such as arch rib composite section, stress concentration, support stiffness and construction process, the finite element modeling analysis of the bridge structure in the construction stage is carried out by using Midas software, and the calculation results are analyzed. According to the bridge finite element calculation results and experience, a detailed bridge construction monitoring scheme is designed. The construction practice shows that the bridge detection data is highly consistent with the calculation data in the process of bridge construction monitoring, which shows that the monitoring calculation and analysis of the bridge is accurate and the construction monitoring is accurate and reliable.

Key words:  tied arch bridge, finite element analysis, construction monitoring