In this study, we conducted three-dimensional finite element analysis of the uplift bearing capacity of rock-socketed piles using ABAQUS FE software. After verifying the reliability of the numerical model, a large number of numerical calculations were performed by varying parameters including rock-socketed depth, pile length, pile diameter, and elastic modulus of the pile shaft to analyze their effect on the uplift bearing capacity. The results show that the relationship between uplift load and displacement of a rock-socketed pile consists of three stages: an elastic deformation stage, an elastoplastic deformation stage, and a plastic failure stage. The uplift bearing capacity increases with increasing rock-socketed depth, pile length, and pile diameter. As rock-socketed depth increases, the proportion of frictional resistance to uplift load increases nonlinearly. With increasing of elastic modulus of the pile shaft, the ultimate uplift bearing capacity of a rock-socketed pile increases, whereas the pile-top displacement decreases.

在本研究中，我们使用 ABAQUS FE 软件对嵌岩桩的抗拔承载力进行了三维有限元分析。在验证了数值模型的可靠性后，通过改变嵌岩深度、桩长、桩径、桩身弹性模量等参数进行大量数值计算，分析其对抗拔承载力的影响。结果表明，嵌岩桩的抗拔荷载与位移关系分为三个阶段：弹性变形阶段、弹塑性变形阶段和塑性破坏阶段。抗拔承载力随着嵌岩深度、桩长和桩径的增加而增加。随着嵌岩深度的增加，摩擦阻力与抬升载荷的比例非线性增加。随着桩身弹性模量的增加，嵌岩桩的极限抗拔承载力增加，而桩顶位移减小。