应用多点协助顶升法更换多跨连续梁支座

Application of Multipoint Assisted Jacking Method to Replace Multi-span Continuous Beam Support

提出"多点协助、单点更换、兼顾横向同步、逐墩顶升"的连续梁支座更换方法,能在确保桥梁结构安全的基础上,即可节约设备投入,亦能降低对支顶基础的要求,节约施工成本。实践证明该方法行之有效。

The article introduces the 'multipoint assisting, single-point replacement, transverse synchronization and jacking by piers'of continuous beam support replacement method. On the basis of able to ensure the safety of bridge structure, this method can not only save the equipment investment, but also reduce the requirement of jacking foundation in order to save the construction cost. The practice proves that this method is feasible.