超深基坑围护结构施工技术

Construction Technology of Retaining Structure of Extra-deep Excavation

以外环隧道浦西暗埋段基坑围护结构施工为例,介绍超深基坑围护结构施工中采用的一些施工工艺及独特的结构,如成槽工艺、钢管桩加钻孔灌注桩作封头墙、分体式接头箱、新型十字钢板接头等,保证了工程的顺利进行,也为今后类似工程提供了借鉴。

In construction of the retaining structure of extra-deep excavation,for example of that in Puxi cut-cover sec- tion of Shanghai Outer Ring Tunnel,there are some technologies and unique structures.This paper introduces these technologies for reference.