In the default model the friction coefficient is defined as afunction of the equivalent slip rate and contact pressure.
在默认模型里，定义摩擦系数为等效滑移率和接触压力的函数。
2
By the stress analysis of the differential element under different displacement modes, it is supposed that the displacement mode only influences the equivalent internal friction Angle of interlayer.
对不同位移模式下水平微分单元进行受力分析，认为位移模式只影响了层间等效内摩擦角。
3
Based on the general case of tendons used in practice, the formulas for calculating the extent owing to the anti-friction effects and the prestressing equivalent loads are derived.