Though very little relative displacement between pile and soil occurs, the side resistance of soil close to pile bottom will increase sharply.
而靠近桩端的桩侧土体，尽管桩土相对位移较小，桩侧摩阻力值却会急剧增大。
It was validated that the relationship between the side resistance of piles and the difference of tangential displacement between two sides of the pile-soil interface could be expressed by hyperbola.
验证了桩侧阻力与接触面两侧切向位移差之间关系可以用双曲线表示。
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