抗滑桩深度对边坡稳定性影响数值模拟研究

Numerical Simulation of the Influence of Anti-slide Pile Depth on Slope Stability

边坡失稳是水利工程中常见的一种灾害,为研究抗滑桩对土质边坡支护效果的影响,采用数值模拟方法分析抗滑桩深度对边坡稳定性的影响。结果表明随着桩深增加,抗滑桩所承受的土体压力增大,在抗滑桩深度为5.80 m时达到最大应力。采用强度折减法,当折减系数为2.3时,边坡的坡脚处出现位移突变,当折减系数达到2.75时,边坡发生破坏。研究结果对于土质边坡抗滑桩的设计提供参考。

Slope instability is a common disaster in hydraulic engineering.In order to study the influence of anti-slide pile on the supporting effect of soil slope,the influence of anti-slide pile depth on the slope stability is analyzed by numerical simulation.The results show that the soil pressure of anti-slide pile increases with the increase of pile depth,and the maximum stress is reached when the pile depth is 5.8m.Using the strength reduction method,when the reduction coefficient is 2.3,the slope foot displacement mutation occurs.When the reduction coefficient reaches 2.75,the slope failure occurs.The research results can provide reference for the design of anti-slide pile of soil slope.