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本文简要分析了端承桩负摩阻力特点,并采用有限元方法分析了端承桩负摩阻力的性状。计算结果表明,端承桩的负摩阻力性状随着桩顶荷载的作用而变化,这与摩擦桩相似。桩顶荷载的作用使得桩的沉降增大、下拽力减小、中性点上升。分析还表明下拽力和中性点位置的变化与桩顶荷载呈现出一定的变化规律,这对于研究端承桩的负摩阻力问题是有意义的。
In this paper, the characteristics of the negative friction of the end bearing pile are briefly analyzed, and the characters of the negative friction of the end bearing pile are analyzed by the finite element method. The calculation results show that the negative friction resistance of the end bearing pile changes with the load of the pile top, which is similar to the friction pile. The effect of pile top load makes the pile settlement increase, the drag force decreases, and the neutral point rises. The analysis also shows that the change of the drag force and the neutral point position and the pile top load show a certain variation, which is significant for the study of the negative friction resistance of the end bearing pile.