双壁钢围堰冲刷悬空处理工艺  

Floating Flushing Treatment Process of Double-wall Steel Cofferdam

作　　者：覃碧 

机构地区：[1]广西路桥工程集团有限公司,广西南宁530011

出　　处：《西部交通科技》2016年第7期54-57,共4页Western China Communications Science & Technology

摘　　要：双壁钢围堰是桥梁深水基础施工中常用的工程设施,具有庞大的体积,但因其庞大的阻水面积而造成围堰底部覆盖层被流水淘蚀,给施工造成一定的困难。文章以扶典口西江特大桥为例,阐述了采用钻孔压浆的方式进行围堰封底混凝土掏空处理的施工工艺,具有一定的可借鉴性。The double-wall steel cofferdam is the engineering facility commonly used in bridge deep- water foundation construction, which has huge volume, but its huge water-blocking area can cause the cofferdam bottom cover-layer being scoured by the flowing water,thus resulting in certain difficulty to the construction.With Fudiankou Xijiang Super-large Bridge as the example,this article described the construction technology of using the drilling grouting method for the tunneling treatment of cofferdam subsealing concrete,which has certain reference significance.

关 键 词：钻孔压浆 双壁钢围堰 封底混凝土 汛期冲刷 掏空处理 

分 类 号：U443.16[建筑科学—桥梁与隧道工程]