局部冲刷通过去除桩基周围的土体而引起桩基承载力的显著损失，由于波浪和水流的方向性，使得冲刷坑具有非对称性。为了明确非对称冲刷条件下水平受荷载桩基的侧向响应问题，提出了一种不对称的冲刷坑模型，采用三维有限元软件ABAQUS建立模型与实验进行了对比验证，然后通过系统的参数分析，研究了不同非对称冲刷率、最大冲刷深度、冲刷坡角以及荷载方向下，桩基的侧向响应，并建立了非对称冲刷条件下修正p-y曲线模型。结果表明：当非对称冲刷率减小、最大冲刷深度增加和冲坑坡角减小，都会使得桩基水平承载力和桩身最大弯矩减小、最大土体阻力增加且桩身弯矩最大值和土体阻力的最大值以及桩身旋转中心的位置都会向桩底移动。由于冲刷坑的非对称性，沿y轴正向加载和负向加载时桩基的侧向响应存在明显差异并且这种差异随最大冲刷深度增大而更加增大且随非对称冲刷率的增大而更加明显。

Local scour significantly reduces the bearing capacity of pile foundations by removing soil around the piles. Due to the directional nature of waves and currents, scour holes exhibit asymmetry. To clarify the lateral response of horizontally loaded pile foundations under local asymmetric scour conditions, an asymmetric scour hole model was proposed. A three-dimensional finite element model was established using ABAQUS software and validated through comparison with experiments. A systematic parameter analysis was then conducted to study the lateral responses of pile foundations under varying asymmetric scour ratios, maximum scour depth, scour hole angles, and load directions. A modified p-y curve model under asymmetric scour conditions was also developed. The results indicate that as the asymmetric scour ratio decreases, maximum scour depth increases, and the scour hole angle decreases, the horizontal bearing capacity and maximum bending moment decrease, while the maximum soil resistance increases. The positions of the maximum bending moment and soil resistance, as well as the rotation center of the pile, shift towards the pile base. Due to the asymmetry of the scour hole, there are significant differences in the lateral responses of the pile foundation when loaded along the positive and negative y-axis directions, and these differences become more pronounced with increasing scour depth and increasing asymmetric scour ratio.