中文摘要：

讨论了基于塑性变形理论的桩侧极限侧压力计算公式的适用条件,发现当桩距较小时塑性变形理论不适用,由此分析出实际抗滑力与土坡位移有关,即与边坡稳定安全系数有关。建立了小桩距抗滑桩的侧压力计算公式,结合极限平衡条分法推导了小桩距抗滑桩加固边坡时安全系数的计算公式。结合某泵站工程边坡不同的设桩方案进行了计算,研究结果表明,利用抗滑桩加固边坡时,当桩距较小时采用本文的方法进行分析是合理的。

英文摘要：

The application conditions of the formula for the limit lateral pressure calculation based on the plastic deformation discussed.It is found that the plastic deformation is not applicable when the pile spacing is too small.The actual stabilizing force is related with the displacement of a slope,that is,it is associated with the safety factor of the slope.a formula for the lateral pressure of anti-slide piles with small spacing is established.Combined with the simplified Bishop＇s method,the formula for calculating the safety factor of slopes reinforced by anti-slide piles with small spacing is derived.The slope of a pumping station with different pile spacins is calculated.The results show that for the slope reinforced by piles with small spacing,the proposed method is reasonable.