人工挖孔桩桩底注浆技术与应用

Labour-dug Pile Base Grouting Technology and Application

人工挖孔桩是应用较为普遍的基础结构。将地基处理技术压浆工艺引入到人工挖孔技术中,可避免人工开挖过程中的涌水、冒砂现象,并减小开挖深度。浆体与软弱地基土结合形成复合地基,可提高桩端承载力。结合工程实际,对桩底压浆后的人工挖孔桩进行了检测,表明该技术在本工程中应用是成功的,可供类似基础工程参考应用。

The labour-dug pile is widely used in foundation engineering.Grouting process will be introduced to labour-dug pile technology,you can avoid the water gushing in the process of manual excavation,sand the phenomenon of risk,and may reduce the depth of excavation.Cement paste with the weak foundation soil combine to form a composite foundation,can improve pile bearing capacity.In this paper,engineering practice,right after the grouting pile test results show that the application of technology in this project is successful.The technology is available for similar projects for reference applications.