Laboratory model test results for the ultimate load of a circular foundation resting on a sand layer of limited thickness underlain by a rigid rough base and subjected to eccentrically inclined loading are presented. The embedment ratio (to the diameter of the foundation) was varied from zero to one. The load eccentricity and inclination were varied from 0 to 0.150 and 0° to 20°, respectively. Based on the model tests results, a relationship for a reduction factor has been developed. The reduction factor can be used to estimate the ultimate load for a sand layer with limited thickness from the ultimate load for a sand layer extending to a great depth determined by using the existing conventional theories.

给出了圆形基础的极限载荷的实验室模型测试结果，该圆形基础位于有限厚度的砂层上，并由刚性粗糙基底支撑，并承受偏心倾斜载荷。嵌入率（相对于基础的直径）从零到一变化。负载偏心率和倾斜度分别从0到0.150和0°到20°变化。根据模型测试结果，已开发出与减少因子的关系。减小因子可用于通过使用现有常规理论确定的，延伸至较大深度的砂层的极限载荷来估算厚度有限的砂层的极限载荷。