基于椭圆型滑动面的砂土中条形锚板上拔承载力计算方法

对于砂土中的竖向拉拔锚板，锚周土体滑动面的形态会随埋深比的增大而发生变化。基于滑动面连续演化的观点，审视了既有统一模型中滑动面形态表征函数的不足，在此基础上，提出了一种新的椭圆形态函数，并建立了相应的统一力学分析模型，提出了新的承载力计算方法。结果表明：新的形态函数能更好地反映滑动面的实际形态，承载力计算新方法也表现出了更好的适应性。

Calculation method of uplift bearing capacity of strip anchor plate in sand based on elliptical sliding surface

For the uplift anchor plate in sand, the shape of the soil sliding surface around the anchor plate will change with the increase of the buried depth ratio. In this paper, from the viewpoint of continuous evolution of sliding surface, the shortcomings of the morphological characterization function of sliding surface in the existing unified model are examined, and then a new elliptical state function is proposed, and the corresponding unified mechanical analysis model is established, and a new calculation method of uplift capacity is proposed. The results show that the new morphological function can better reflect the actual morphology of the sliding surface, and the new method also shows better adaptability.