港口航道与近海工程2024，Vol.61Issue(z1)：54-59,6.DOI:10.16403/j.cnki.ggjs2024S113
后注浆工艺在桩基施工中的应用
Application of Post-Grouting in Pile Foundation Construction
李拥文 1乐利光1
作者信息
- 1. 中交一航局第五工程有限公司,河北秦皇岛 066000
- 折叠
摘要
Abstract
Post-grouting into bored cast-in-situ piles is performed through the grouting pipes previously installed at the bottom and the shaft of the cast-in-situ piles,and is pressurized by the grouting valves connected with it,to carry out high-pressure grouting at a certain time after the formation of the concrete cast-in-situ piles The post-grouting can act infiltration(coarse grain soil),splitting(fine grain soil),filling(loose soil),compaction(unsaturated loose soil)to the pile bottom sediment,pile shaft mud and soil layer at the bottom of the pile.It is a pile foundation improvement technology that strengthens the pile end sediment,pile side mud and soil layer in a certain range,improves the working interface of pile and soil,greatly improves the pile shaft friction resistance and pile end bearing capacity,thus greatly improves the ultimate bearing capacity of single pile and correspondingly reduces pile foundation settlement.关键词
注浆阀/高压注浆/侧摩阻力/桩端承载力/沉降Key words
Grouting valve/High-pressure grouting/Side friction/Pile toe bearing capacity/Settlement分类
建筑与水利引用本文复制引用
李拥文,乐利光..后注浆工艺在桩基施工中的应用[J].港口航道与近海工程,2024,61(z1):54-59,6.
