杭州钱塘江九堡大桥全长1.9 km。大桥全部采用组合结构与顶推法施工。其中主航道桥为3×210 m连续钢拱结合梁,拱梁钢结构采用整体同步顶推法新技术;南北引桥采用跨径85 m大悬臂宽幅钢混组合连续梁新结构。介绍了大桥设计与主要施工工艺。特别介绍了首次在桥梁上大规模采用多点同步步履式顶推法的施工工艺。 Hangzhou Qiantang Jiubao Bridge length of 1.9 km. Bridge all use combination structure and push construction method. Among them, the main fairing bridge is a 3 × 210 m continuous steel-arch combined beam, the steel structure of the arch beam adopts the new technology of integral synchronous push-push method, and the north-south approach bridge adopts the new structure of 85 m wide cantilever wide-width steel mixed composite continuous beam. Introduced the bridge design and main construction technology. In particular, the construction technology for the first large-scale multi-point synchronous walking push method on bridges is introduced.