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抗滑桩是边坡加固的重要手段之一,目前虽已被广泛应用,但是桩的抗滑力计算方法和设计理论都还需继续深入研究。为研究抗滑桩对高边坡的支护效应,以滇西南地区边坡工程为依托,应用Midas/GTS软件,对抗滑桩加固边坡的稳定性进行分析。利用数值方法探讨抗滑桩在含滇西红层高边坡中的加固效果,对抗滑桩在自重应力作用下的安全系数,地震荷载下的位移峰值、桩内力3个方面分析对比,通过分析支护前后边坡的稳定性可知,采用抗滑桩支护后,安全系数有明显的提高,水平向和竖直向的位移峰值明显减小,边坡稳定性得到加强。本文研究结果对滇西南地区高边坡稳定性研究具有一定的指导意义,其研究成果可供类似工程设计参考。
Anti-slide piles are one of the important means of slope reinforcement. Although widely used nowadays, calculation methods and design theories of anti-slide forces of piles need to be further studied. In order to study the supporting effect of anti-slide piles on high slopes, the stability of anti-slide piles reinforced slopes was analyzed by using Midas / GTS software based on the slope engineering in Southwest Yunnan. The numerical method is used to investigate the reinforcement effect of anti-slide piles in the high slopes with red beds in western Yunnan. The safety factors of the anti-slide piles under self-weight stress, the displacement peak under seismic load and the internal force of piles are analyzed and compared. The stability of slope before and after supporting shows that the safety factor is obviously improved after anti-slide pile is supported, the displacement peak in horizontal and vertical direction is obviously reduced, and the slope stability is strengthened. The results of this paper are of guiding significance for the study of the stability of high slopes in southwestern Yunnan, and their research results can be used as a reference for similar projects.