基于斜壁桶形基础的空间受力状态和基本假定，利用极限平衡法推导得到了斜壁桶形基础的水平承载力表达式，并与模型试验结果进行对比，验证了该计算方法的可靠性。通过变动参数，分别探讨了桶壁倾角、地基反力比例系数、桶基顶部直径、桶基高径比、水平力作用点高度等水平承载力的影响及相对敏感性。计算表明斜壁桶形基础的水平承载力随着桶壁倾角的增大而急剧增大。研究结果有助于对传统桶形基础进行优化设计。

Based on the three-dimensional stress state and some assumptions of the tapered bucket foundation, we used the limit equilibrium method to obtain the calculation formula of horizontal bearing capacity of tapered bucket foundation, and compared the results with the model test results, and thus validated the reliability of the formula. Through varying different parameters, we analyzed the influence of the obliquity of bucket wall, proportionality coefficient of soil resistance, top diameter of bucket foundation, height-diameter ratio of bucket foundation, and height of acting point on the value of horizontal bearing capacity of tapered bucket foundation. It was found that the horizontal bearing capacity increased rapidly as the obliquity of bucket wall increased. The results of this research are helpful to the optimization design of traditional bucket foundation.

国家自然科学基金项目(41306088)；院土木工程重点建设学科项目(2014xk04)；院级学科带头人培养对象项目(2014dtr01)