JWAJournal of World Architecture2208-34802208-3499Bio-Byword Scientific Publishing Pty. Ltd.10.26689/JWA.v10i4.15285ArticleResearch on the Optimization of Bearing Capacity of Drilled Pile Structures Using Post-Grouting Technologyhttps://artdesignp.com/journal/JWA/10/4/10.26689/JWA.v10i4.15285WuHan20261042026-08-31To study the improvement effect of post-grouting technology on the bearing performance of drilled cast-in-place piles under complex geological conditions, six drilled cast-in-place piles of a project in Yunnan are taken as research objects in this paper. Starting from field construction data collection, parameter measurement, and comparative analysis, the variation laws of key parameters such as grouting pressure and grouting volume during post-grouting construction are systematically investigated, which verifies that post-grouting technology can improve the bearing capacity of pile foundations. The research results show that cement slurry with a water-cement ratio of 1:0.6 is adopted for all six piles of this project. After primary grouting, secondary grouting, and supplementary grouting, the actual grouting volume of every single pile exceeds the designed value. Among them, the actual grouting volume of Pile SYZA2 reaches 10.7 tons, exceeding the designed value by 78.3%. The grouting pressure rises first and then stabilizes with the grouting time, while the cumulative grouting volume increases in a stepped manner as time elapses. The multi-stage grouting process can improve the uniformity of slurry diffusion. The research findings can provide parameter references and a practical basis for post-grouting construction of drilled cast-in-place piles under similar geological conditions.Drilled cast-in-place pile, Post-grouting technology, Bearing performance, Grouting parameters, Engineering practice

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