压密注浆技术在桥头搭板抬升的应用  

Application of Compaction Grouting Technology in Bridge Head Slab Lifting

作　　者：燕志刚 YAN Zhigang(Guangzhou Jingte Construction Engineering Co.,Ltd.Guangzhou 510699,China)

机构地区：[1]广东精特建设工程有限公司,广州510699

出　　处：《广东土木与建筑》2022年第7期78-81,共4页Guangdong Architecture Civil Engineering

摘　　要：高速公路桥梁与道路连接处经常出现桥头搭板的不均匀沉降,存在较大的交通安全隐患。就此问题提出了一种采用压密注浆技术进行快速抬升的方法,可以有效地将搭板抬升至桥面坡度,将误差控制在约1 mm,同时对桥头搭板基础进行永久性加固处理,提高了地基承载力,防止再次沉降。特别适用于治理已通车的高速公路桥头跳车问题。The uneven settlement of the bridgehead slab often occurs at the junction of the highway bridge and the road,and there are great traffic safety hazards.A method of rapid lifting by compaction grouting technology is proposed,which can effectively lift the slab to the slope of the bridge deck,and the error is controlled at about 1 mm.At the same time,the permanent reinforcement of the slab foundation at the bridge head is carried out to improve the foundation bearing capacity and prevent re-settlement.It is especially suitable for dealing with the problem of bumping at the bridge head of the expressway.

关 键 词：桥头跳车 桥头搭板 注浆抬升 压密注浆 

分 类 号：TU997[建筑科学—市政工程]