for application and populization of the corrugated steel web PC composite box-girder bridge, a new asynchronous cantilever construction method was proposed to reflect the social and economic benefits of this type bridge in short term. In this paper, comparisons of the construction process and economic indexes between the traditional hanging basket cantilever construction method and the asynchronous cantilever method. Combination of the large finite element program ANSYS, a fine finite element model of the studied bridge was built, some analysis of the bridge structure were conducted for the whole process of construction, the calculation results were compared with the field testing data by the real-time monitored stress and displacement. The results indicated that the process of asynchronous cantilever construction method is simple and clear, the construction period is short and the economic indicator is high. This proposed asynchronous cantilever construction method is far superior to the traditional hanging basket cantilever construction method. The deformation and stress of structure were varied in a reasonable and safety range during the construction for the proposed method. The structural stress distribution of the proposed method is more reasonable than that of the traditional hanging basket cantilever construction method.

针对波纹钢腹板PC组合箱梁桥的应用和推广，提出了一种新的异步悬臂施工方法，以短期反映这种桥的社会和经济效益。本文比较了传统吊篮悬臂施工方法和异步悬臂施工方法的施工过程和经济指标。结合大型有限元程序ANSYS，建立了所研究桥梁的精细有限元模型，对桥梁结构进行了全过程的分析，将计算结果与实测数据进行了实测比较。时间监控应力和位移。结果表明，异步悬臂施工方法的过程简单明了，建设周期短，经济指标高。提出的异步悬臂施工方法远远优于传统的吊篮悬臂施工方法。该方法在施工过程中，结构的变形和应力在合理和安全的范围内变化。与传统的吊篮悬臂施工方法相比，该方法的结构应力分布更为合理。