桑布贡吉桥护岸地下连续墙基础施工

The Construction of an Under ground Continuous Wall Foundation at the Bridge site of “Sangbugongji Bridge”

介绍援外桥梁护岸工程，采用两钻一挖工艺，自制导板抓斗机架，设置液压自控系统完成厚０．８ｍ、深１７．８ｍ、长１０５．２ｍ钢筋混凝土地下连续墙基础施工实况。机具可在挖深２０ｍ内、土密实度Ｎ＜３０时适用。

This paper describes the construction features of a bridge site bank protection project in a “Foreign Aid Service”. By using the technology of “two drilling and one digging” and by means of self manufactured sheet guideing bucket frame and hydraulic automatic controlling system, an underground continuous reinforced concrete wall with a thickness of 0.8m, a depth of 17.8m and a length of 105.2 m was completed. This set of equippment is suitable for soils with density number N less than 30 and depth up to 20 m.