甬台温铁路东西干河特大桥施工方案对比

Comparison on Construction Schemes for Dongxi Ganhe Bridge in Yongtaiwen Railway

甬台温铁路东西干河特大桥全长2 245.51m,共68孔。孔跨间为软基,简支箱梁采用移动模架造桥机和移动支架两种现浇方案。连续梁采用挂篮对称悬臂浇筑。从整体特点,施工优点、缺点,施工工期及经济分析等方面,对这几种方案进行了对比分析,并在实际施工中得到了成功应用。

The length of the Dongxi Ganhe Bridge in Yongtaiwen Railway with 68 spans is 2 245.51 meters. Soft ground exists in the bridge spans. Simple supported box girders are constructed by two pouting methods of mobile form and bracket bridge fabrication machine method and moving support method. And continuous beam is constructed symmetrically by cantilever casting method with hanging basket. These construction methods, which are used successfully in practice project, are compared from advantages, disadvantages, construction period and economy, etc.