冲(钻)孔灌注桩桩底高压注浆技术应用

Application of pile bottom pressure Grouting technology for Punching( drilling) pile

本文介绍了桩底高压注浆施工程序和施工要点,重点阐述可灌性实施关键环节和保证措施。通过工程实例证明了该工艺实施可有效地解决灌注桩承载力不确定性和离散性,其对承载力提高幅值应以静载荷试验予以确认。

This article describes process and key points of construction of pile bottom high pressure grouting, with focus on key points of filling feasibility and guarantee measures. The project demonstrated that the process can be carried out effectively to resolve bored piles load uncertainty and discrete, and the load increasing value could be confirmed by static load test.