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最小势能法是基于系统平衡时势能最小的边坡稳定性分析方法,因而势能的准确求解对计算结果的可靠性至关重要。针对抗滑桩三维加固边坡,考虑了由于桩土相互作用下桩体沿着边坡潜在滑动方向产生的转角变形,进而求得桩土相互作用下桩体以及桩土接触处的势能,然后基于最小势能原理建立抗滑桩加固边坡稳定性分析模型,并得到了与传统分析方法较为一致的结果;同时分析研究了抗滑桩在不同力学参数和边坡类型条件下对边坡安全系数的影响。研究结果表明:抗滑桩弹性模量对安全系数影响不明显;边坡横向相对半径大于4时,抗滑桩对边坡的安全系数影响较小。
The minimum potential energy method is based on the slope stability analysis method with the minimum potential energy when the system is balanced. Therefore, accurate calculation of potential energy is crucial to the reliability of the calculation results. Considering the three-dimensional reinforcement slope of anti-slide pile, considering the deformation of the pile due to potential slip along the slope under the interaction of pile and soil, the potential energy of the pile body and pile-soil contact under the pile- Based on the principle of minimum potential energy, the stability analysis model of anti-slide piles strengthened slope is established, and the result is consistent with the traditional analysis method. At the same time, the stability of anti-slide piles under different mechanical parameters and slope types is analyzed. Impact. The results show that the elastic modulus of the anti-slide piles has no obvious effect on the safety factor. When the relative radius is greater than 4, the anti-slide piles have little effect on the safety factor of the slope.