深厚淤泥地质条件下桩基双钢护筒施工技术

Construction Technology of Double Steel Pipe Protection for Pile Foundation Under Deep Mud Geological Conditions

珠海横琴桥梁桥址均处于深厚淤泥地质,淤泥现流塑态,桥梁桩基施工过程中存在塌孔、缩颈等不良现象。为能够提高桩基质量、提高桩基耐久性以及降低工程造价,采用双钢护筒进行施工,该工艺克服了传统钻孔灌注桩施工所存在的不足。

Zhuhai Hengqin Bridge Sites are all in deep silt geology,and the silt is in current plastic state.There are some bad phenomena such as collapse and necking during the construction of bridge pile foundation.In order to improve the quality of pile foundation,improve the durability of pile foundation and reduce the cost of construction,double steel drums are used to construct the pile,which overcomes the shortcomings of traditional bored pile construction.