【摘要】 为了深入研究双套拱斜拉桥在施工阶段及成桥运营状态下的整体稳定性，文章以荆邑大桥为背景工程，采用ANSYS软件建立整个施工过程以及成桥状态下不同荷载作用下的有限元模型，通过分析各个工况下结构的稳定安全系数来评定结构的稳定性。研究结果表明：借助门架竖转主拱塔施工时，门架的整体稳定性系数较小，需要特别关注；借助主拱塔竖转副拱塔以及成桥后在各种荷载作用下，双套拱斜拉桥的整体稳定系数都远高于规范的要求。施工及成桥状态的计算结果可为类似桥梁的设计及施工提供参考。更多还原

【Abstract】 In order to deeply study the overall stability of the double arch cable-stayed bridge in the construction stage and the completed bridge operation state, the paper takes Jingyi Bridge as the background project, uses ANSYS software to establish the finite element model of the entire construction process and the completed bridge under different loads, and evaluates the stability of the structure by analyzing the stability safety factor of the structure under each working condition. The results show that the overall stability coefficient of the portal is small when the portal is used to vertically rotate the main arch tower, which requires special attention; with the help of the main arch tower to turn the secondary arch tower vertically and under various loads after the completion of the bridge, the overall stability coefficient of the double arch cable-stayed bridge is far higher than the requirements of the specification. The calculation results of construction and completed bridge state can provide reference for the design and construction of similar bridges.更多还原