Based on load transferring concept, this paper puts up a new method which USES double broken line model to calculate the negative friction of pile.

基于荷载传递函数的概念，提出了一种用双折线模型来计算桩负摩阻力的方法。

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Based on load transferring concept, the author puts up with a new method which USES double broken line model to calculate negative friction.

本文基于荷载传递函数的概念，提出了一种用双折线模型来计算负摩阻力的新方法。

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Then, according to the shortest way principle for load transferring, a practical simplified model is presented.

然后按照最短传力路径原理提出一个实用的简化模型。

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