钻孔灌注桩桩端后注浆的设计研究

Designing Research of Drilling Pile and Post Grouting Pile

桩端后注浆技术是提高桩端面上的单位面积阻力的方法之一。本文结合工程实例分析了桩端后注浆技术适用的地质条件,论述桩端后注浆主要工艺参数设计和单桩极限承载力的计算方法,可供相同地质条件的基础工程设计参考。

Post grouting technique of pile bottom is an important way to improve unit area＇s resistance on pile bottom.This paper analyzes geology conditions that was adapted to the technique,describes the technique＇s main process parameters designing and calculation method of single pile bearing capacity,which might provide reference for basic engineering design with similar geology condition.