本文用轴对称有限元法分析了桩基的蠕变效应。用广义开尔文模型和宾汉姆模型来分别模拟土的粘弹和粘塑性状。推导了轴对称条件下桩土接触面及桩周土体的粘弹、粘塑性应变增量公式。在此基础上编制了轴对称弹-粘弹-粘塑性有限元程序,分析了桩基的沉降、承台的荷载分担作用,以及桩体的侧阻力分布等受蠕变的影响,比较系统地研究了桩基的蠕变效应。此外,还进行了桩土接触面的摩擦试验研究。 In this paper, the effect of creep of pile foundation is analyzed by axisymmetric finite element method. The generalized Kelvin model and Bingham model were used to simulate the viscoelastic and viscoplastic behavior of the soil, respectively. The viscoelastic and viscoplastic strain increment formulas for the pile-soil contact surface and the soil around the pile were derived. Based on this, axisymmetrical elastic-viscoelastic-viscoplastic finite element program was programmed. The settlement of pile foundation, load sharing of pile caps, and lateral resistance distribution of piles were analyzed and affected by creep. The creep effect of the pile foundation was studied. In addition, the friction test of pile-soil interface was also studied.