大吴京杭运河特大桥为旧桥改造项目,主桥设计为164m下承式钢箱提篮拱桥。本文主要介绍了钢箱提篮拱的结构特点、桥面系设计、静力计算、稳定分析及主桥施工方法。通过计算分析表明,结构各构件在施工和使用阶段受力性能满足要求、且稳定安全系数较高。 Large Wu Jing Hang Canal Bridge for the old bridge reconstruction project, the main bridge designed for the 164m under-span steel box basket arch bridge. This article mainly introduces the structural features of steel box basket arch, deck design, static calculation, stability analysis and main bridge construction method. Through calculation and analysis, it is shown that the mechanical properties of each component of the structure meet the requirements during construction and use, and the stability and safety factor is high.