浅析泥浆护壁钻孔灌注桩后注浆工艺的机理与应用

受施工工艺限制,泥浆护壁钻孔灌注桩桩端沉渣不易清除,桩端及桩周土较易扰动,导致单桩承载力有一定程度的降低,通过后注浆技术,可有效解决此问题.本文概述了后注浆工艺的加固机理及处理效果的力学分析,简述常用注浆方式和施工工艺,并结合工程实例,藉以说明泥浆护壁钻孔灌注桩后注浆工艺可明显提高单桩承载力及桩侧土摩阻力.

Mechanism and Application of Post Grouting for Bored Pile in Slurry Wall

With the restriction of construction technology,sediment at the tip of bored pile in slurry wall is difficult to be cleared,and soil there and aroud pile is disturbed easily,so the vertical bearing capacity of a single pile will be reduced to some extent.Post grouting can solve this problem effectively.This article provides an overview of the reinforcement after the post-grouting process and the mechanical analysis of the effect,and describes briefly commonly used methods and construction technology of post...