基于传递系数法确定支护桩设计推力的新方法

针对目前传递系数法用于计算桩后滑坡推力是可行的，但不能计算桩前抗力确定支护桩设计推力的问题，提出了一种基于传递系数法支护桩设计推力计算的新方法：利用传递系数法的思想，在工程安全要求条件下，从上往下分析各条块的剩余下滑力，同时逆向计算各条块的剩余抗滑力，支护桩设置处剩余下滑力与剩余抗滑力在水平方向上的差值即为支护桩的设计推力值，并给出了相应设计推力表达式，通过与其他计算方法比较，证明了该方法的合理性。该法不需要考虑推力传递系数或修正量，直接给出了设计推力的表达式，计算简便，实用性强。

A New Method on Ascertaining Designed Thrust for Timbering Pile Based on Transfer Coefficient Method

To the question that transfer coefficient method used for the calculation of the landslide thrust behind anti-slide pile was viable, but the designed thrust could not be ascertained through calculation of sliding-resistance force before anti-slide pile. a new method of calculating designed thrust of timbering pile which based on transfer coefficient method was put forward as follows: the idea of transfer coefficient method was used, under the engineer safety request, residual sliding force was calculated from up to down, simultaneously residual sliding-resistance force was inversely calculated from down to up, designed thrust of the setting of timbering pile was equal to horizontal difference between residual sliding force and residual sliding-resistance force, and the expression of designed thrust was present, compared with other calculated methods, the method was proved reasonably. The method that transfer coefficient of thrust and modification are not considered requiredly presents expression of design thrust, which is simple and convenient for calculation and applies better.