中文摘要：

根据强度折减法,运用ABAQUS有限元分析软件探讨抗滑桩截面尺寸以及桩侧摩阻对边坡稳定性的影响。以特征部位的位移拐点作为边坡达到临界破坏状态的标准,并由求得的强度折减系数评价边坡的稳定性。结果表明：随着桩截面宽、高的增大,边坡的稳定性系数增大,但其增长速率越来越小;相对于桩截面尺寸,桩侧摩阻对边坡稳定性的影响很小,以至于可以忽略不计;当桩截面较小时,在保持桩截面面积不变的情况下,桩截面高大的抗滑桩在边坡中所起的作用越明显,但随着桩截面面积的增大,由桩的设置方位带来的边坡安全系数差异逐步减小;当桩间净距不变时,增加桩截面高比增加桩截面宽对边坡稳定性提高的作用更明显。因此,实际抗滑桩工程中控制和优化桩的有效截面尺寸,采用多桩减宽的方式将是经济有效的。

英文摘要：

The influence of section size and pile side friction of anti-slide piles on slope stability is discussed by using the finite element software ABAQUS according to strength reduction method. Taking the displacement inflection of characteristic position as the standard of slope critical failure state and evaluate slope stability by corresponding strength reduction factor. The results show that the slope stability factor is augmented with the increase of width and height of antislide piles, but the growth rate is more and more slow. Compared to pile section size, pile side friction have a so marginal effect on slope stability that it can be neglected. When pile section area is relatively small, pile with higher height will play a more obvious role on slope in the case of pile cross section area keep unchanged, but the discrepancy of slope safety factor caused by setting orientation diminished with the increase of pile section area. Adding width of pile have an apparent effect than height on improving slope stability when the clear distance between two adjacent piles remained constant. Therefore, effective pile section size should be controlled and optimized and the method of more piles with smaller width will be cost-effective in practical anti-slide pile engineering.