一种大直径桩缺陷的处理技术和方法

A Technique and Method for Dealing With Defects of Large Diameter Pile

以处理前用两种不同的方法进行检测到的一根缺陷桩为基础,分析确定了缺陷的性质、位置和大小,并根据缺陷的严重程度,采取"中心钻孔掏除缺陷法",用特制的机械及人工对桩身内的混凝土缺陷进行处理,处理后浇筑混凝土。然后用取芯法进行前后检验,结果表明,该缺陷处理方法行之有效,避免了采用传统方法压浆对缺陷不能根除的弊端,既节省了工期又节省了费用。

On the basis of a defect pile detected by two different methods before treatment, the property, position and size of the defect are analyzed and determined. According to the severity of the defect, central hole extraction method is innovatively adopted. Concrete defects are treated with special machinery and artificial method in pile body, and concrete is poured after treatment. The results show that the defect treatment method is effective and can avoid the defects which can not be eradicated by using the traditional method such as grouting, thus this methed saves the time limit as well as the cost.