Work

Enhancement of drilled piles with combined tip and shaft grouting – A case study

Year: 2025

Type: article

Abstract: In this study static load testing of three full scale drilled piles with combined tip and shaft grouting was conducted, where pile head load, pile head settlement, and compression strain of the piles were recorded. It was found that post-grouting tip and shaft of drilled piles can increase pile capacity significantly. Strain incompatibility existed between side friction and tip bearing of the post-grouted piles as the side friction was mobilized before the tip bearing was activated and the piles failed due to the plunge failure before the side friction reached the ultimate strength. It is found that the side shear enhancement of the same type soil varied based on the depth of the soil layer and decreased from pile head toward the tip of piles. The experimental program and theoretical analysis are presented in this paper.

Source: Case Studies in Construction Materials

DOI: 10.1016/j.cscm.2025.e05180

Authors: Piyong Yu, Yangzhi Ren, Donghong Wang, Yue Li

Institution: Beijing University of Technology

Language: English

Topic: Geotechnical Engineering and Soil Mechanics

Subfield: Civil and Structural Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Industry, innovation and infrastructure

Open Access status: gold

Estimated APC paid: $2,660