为研究水平循环荷载下环翼单桩基础的桩顶累积位移发展规律，通过ABAQUS进行二次开发建立了环翼单桩-饱和黏土相互作用三维数值模型，同时实现了土体刚度衰减过程模拟。研究表明：在传统单桩基础泥面位置处安装重力式环翼，能够增强环翼单桩基础的整体水平抵抗力，从而减小循环荷载下环翼单桩的累积位移；桩顶位移均会随着重力式环翼高度及环翼直径的增加而减小，但增加重力式环翼的直径对减小桩顶水平位移具有更明显的效果；增加桩身入土深度，可以显著降低循环荷载下环翼单桩基础的桩顶累积位移。

In order to study the development law of pile top cumulative displacement of ring wing single pile foundation under horizontal cyclic load, a three-dimensional numerical model of the interaction between ring wing single pile and saturated clay was established through secondary development using ABAQUS, and also simulated the process of soil stiffness attenuation. Numerical results indicate that installing gravity type ring wings at the mud surface position of traditional single pile foundations can enhance the overall horizontal resistance of the ring wing single pile foundation, thereby reducing the cumulative displacement of the ring wing single pile under cyclic loads. The displacement of the pile top will decrease with the increase of the height and diameter of the gravity type ring wing, but increasing the diameter of the gravity type ring wing has a more significant effect on reducing the horizontal displacement of the pile top. Increasing the depth of the pile into the soil can significantly reduce the cumulative displacement at the top of a single circular wing pile under cyclic loading.