采用地基反力系数法对输电工程中带翼板掏挖基础水平受荷问题进行了力学分析，利用“翼板平均应力法”修正了“翼板等中心点应力法”的计算公式，并进行了算例分析和讨论。结果表明，带翼板掏挖基础的倾覆变形减小，水平承载力增大；修正后的“翼板平均应力法”计算公式具有更广泛的适用性，而且能反映出翼板型式差异对倾覆变形计算结果的影响；宽浅式翼板基础抵抗倾覆变形要优于窄深式翼板基础，工程设计中推荐采用宽浅式的翼板型式。

With the foundation resistance coefficient method, it gives mechanics analysis for the new digged foundation with wing plates when loaded laterally, and offers corrected formulas by modifying the average stress on the wing plate. Then the average stress on the wing plate is not simply equal to midpoint stress, but the average value of three points, including the upper edge point, the middle point and the lower edge point on the wing plate. At last a project example is analyzed and discussed. The results show that, the new digged foundation can reduce the top horizontal displacement and bear a heavier lateral load; corrected formulas have wider applicability in power transmission projects, and can indicate the effect of the wing plates to the lateral deformation; the new digged foundation with wide-shallow wing plates can get better results than that with narrow-deep wing plates, and is recommended for power transmission projects.