This paper evaluates the effects of tip post-grouting on various capacity interpretation criteria for drilled shafts under compression loading. A wide array of load test data for drilled shafts constructed using three post-grouting methods, including tube-a-manchette, flat jack, and jet grouting, is utilized for the analysis. The load tests were divided based on the different tip post-grouting methods, then they were further divided based on the soil conditions (undrained or drained). The interpreted capacity and displacement at the interpreted capacity are examined for each interpretation criterion. Furthermore, the interpreted results were compared with current studies on drilled shafts that are not subjected to tip post-grouting techniques to determine the effects of post-grouting methods. Based on these analyses, the normalized load–displacement curves and the relationships between various interpretation criteria for drilled shafts with tip post-grouting are established. The drilled shafts subjected to any post-grouting method produced higher capacity and yield larger displacement with the same amount of normalized capacities for undrained and drained soils compared to drilled shafts not subjected to any post grouting procedures. Among the three grouting methods studied, the jet grouting method can produce a greater capacity than the other methods, especially for drained soil conditions. Finally, specific recommendations to guide the design of drilled shafts with tip post-grouting are provided.

本文评估了尖端后灌浆对在压缩载荷下钻孔轴的各种容量解释标准的影响。使用三种后灌浆方法建造的钻孔轴的大量负载测试数据被用于分析，包括管式、扁平千斤顶和喷射灌浆。荷载试验根据不同的尖端后灌浆方法进行划分，然后根据土壤条件（不排水或排水）进一步划分。针对每个解释标准检查解释能力和解释能力处的位移。此外，将解释结果与当前对未采用尖端后灌浆技术的钻孔轴的研究进行比较，以确定后灌浆方法的影响。基于这些分析，建立了标准化载荷-位移曲线以及尖端后灌浆钻孔轴的各种解释标准之间的关系。与未进行任何后灌浆程序的钻孔竖井相比，采用任何后灌浆方法的钻孔竖井在相同数量的归一化容量下对不排水和排水土壤产生更高的容量和产生更大的位移。在研究的三种灌浆方法中，喷射灌浆法比其他方法产生更大的容量，特别是对于排水土壤条件。最后，提供了指导具有尖端后灌浆的钻孔轴设计的具体建议。与未进行任何后灌浆程序的钻孔竖井相比，采用任何后灌浆方法的钻孔竖井在相同数量的归一化容量下对不排水和排水土壤产生更高的容量和产生更大的位移。在研究的三种灌浆方法中，喷射灌浆法比其他方法产生更大的容量，特别是对于排水土壤条件。最后，提供了指导具有尖端后灌浆的钻孔轴设计的具体建议。与未进行任何后灌浆程序的钻孔竖井相比，采用任何后灌浆方法的钻孔竖井在相同数量的归一化容量下对不排水和排水土壤产生更高的容量和产生更大的位移。在研究的三种灌浆方法中，喷射灌浆法比其他方法产生更大的容量，特别是对于排水土壤条件。最后，提供了指导具有尖端后灌浆的钻孔轴设计的具体建议。喷射灌浆方法可以产生比其他方法更大的容量，特别是对于排水土壤条件。最后，提供了指导具有尖端后灌浆的钻孔轴设计的具体建议。喷射灌浆方法可以产生比其他方法更大的容量，特别是对于排水土壤条件。最后，提供了指导具有尖端后灌浆的钻孔轴设计的具体建议。