Evaluation of Post-grouting Bearing Capacity of Cast-in-situ Bored Pile Based on Self-balance Method

Abstract

When the site conditions are complex and the building structure is sensitive to settlement, post-grouting can be adopted for bored grouting pile to improve its bearing capacity, reduce settlement and improve the safety of pile foundation. In this paper, the ultimate bearing capacity of pile foundation is tested by self-balance method, and the ultimate bearing capacity of the two test piles is improved by 95% and 33.3% respectively. The post-grouting has a good impact on the formation with poor bearing capacity and denaturation index.