填砂筑岛代替钢便桥钢围堰在施工中的优越性

On advantages of sand filling for islands replacing steel cofferdam of temporary steel bridges

通过对三和特大桥水中墩76号~87号墩筑岛围堰施工的方案对比,选取"全断面填砂筑路及填砂筑岛+钢板桩围堰"方案,该施工方案快捷、施工方便、节约成本且安全可靠,很好地解决了三和特大桥水中施工难题。详细介绍了方案的相关理论、实践和筑岛围堰施工工艺,可为类似水中墩施工提供参考。

By comparing the cofferdam construction schemes of 76# - 87# pier of water piers in Sanhe super-large bridge,the paper selects the full cross-section sand filling road and sand filling island plus steel pile cofferdam,which is speedy,convenient,cost-saving and reliable to solve the construction difficulties in water construction of Sanhe super-large bridge,and mainly introduces the related theories of the scheme,the practice and the construction craft for the island cofferdam,so as to provide some reference for similar water pier construction.