钻孔灌注桩在公路工程当中应用较为广泛,当采用旋挖钻机成孔工艺时,桩底沉渣和桩侧泥皮是影响桩端承载力与桩侧摩阻力发挥的两个固有缺陷。本文结合忻阜高速公路古峪沟高架桥工程施工,着重对钻孔灌注桩桩侧后注浆技术进行探讨。 Bored piles are widely used in highway engineering. When the hole drilling technology is used, the bottom sediment and the mud side of the pile are two inherent defects that affect the bearing capacity of the pile end and the frictional resistance of the pile. In this paper, Gu-Furu Gorge viaduct project of Xin-Fu Expressway is mainly focused on the post grouting technology of bored pile.