In order to study the influence of post-grouting on the bearing performance of implanted piles, model tests and numerical simulation analysis of implanted piles with multiple groups of post-grouting at different positions were carried out, and the axial force, lateral friction resistance and bearing capacity of the pile were compared and calculated. The results show that: The grouting process has a significant extrusion effect on the soil around the pile after implantation, which increases the soil pressure on the pile side. Post-grouting changed the friction resistance distribution law of the implanted pile and improved the pile-soil interaction. The axial force of the pile body is reduced, and the lateral friction resistance of the pile is increased by about 10 kPa after grouting is increased. Compared with the non-grouting pile, the bearing capacity of the grouting pile is increased by 15.8%, 28.1% and 36.8% respectively in different positions, and the bearing capacity of the pile is increased by 16.1%, 28.7% and 41.3% respectively in numerical simulation, which proves that the post-grouting technology on the pile side can significantly improve the bearing capacity of the pile. The research results provide a reference for the research and development of new implantable pile technology.
Li Xinran
,
Deng Yuebao
,
Zheng Wenxi
,
Yu Shan
,
Zhang Rihong
. Experimental and Numerical Study on Bearing Capacity Characteristics of Implanted Pile with Post Grouting[J]. Chinese Journal of Underground Space and Engineering, 2025
, 21(S2)
: 741
-749
.
DOI: 10.20174/j.JUSE.2025.S2.25
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