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本文通过室内多组后压浆灌注桩单桩模型试验和荷载传递的测试，初步探讨了钻孔灌注桩后压浆机理、土体的注浆效应和后压浆灌注桩的承载变形特性。研究了后压浆灌注桩承载力增幅与地层土性、压浆参数和压浆模式的关系；对压浆参数和压浆顺序的合理选取进行了研究。本文得出的结论可供工程应用和进一步研究参考。
In this paper, through the single-pile model tests and load transfer tests of multiple post-grouting piles in the room, the post-grouting mechanism of bored piles, the grouting effect of soil and the bearing deformation characteristics of post-grouting piles were preliminarily discussed. The relationship between the increase in bearing capacity of post-grouting piles and the relationship between formation soil properties, grouting parameters and grouting mode was studied. The rational selection of grouting parameters and grouting sequence was studied. The conclusions drawn in this paper can be used for engineering applications and further research.