人民长江2024，Vol.55Issue(8)：202-209,8.DOI:10.16232/j.cnki.1001-4179.2024.08.027
抗滑桩加固非均质边坡稳定性上限分析
Upper bound analysis of heterogeneous slopes reinforced by anti-slide piles
摘要
Abstract
Aiming at the stability analysis of heterogeneous slopes,a discrete kinematic failure mechanism of slopes was con-structed based on the upper limit analysis method to consider the influence of heterogeneity of soil internal friction angles.Com-bined with the strength reduction method,an expression of the safety factor of slopes reinforced by anti-slide piles subjected to pore water pressure was derived.Sequential quadratic programming optimization algorithm combined with dichotomy method was used to optimize the solution,and the correctness of the method was verified by comparing the results with the existing literature solutions,and a case study was carried out.The results show that the increase of pore water pressure will reduce the influence of heterogeneity of internal friction angles on slope stability,and also lead to the decrease of the safety factor of the heterogeneous slope and the critical sliding surface shifting inward the slope,which change slope failure mode from toe failure to base failure.The heterogeneity of internal friction angles and pore water pressure have little effect on the optimal position of anti-slide piles.The shape of slopes and soil layer distribution have great influence on the critical sliding surface and the optimal reinforcement position of anti-slide piles,which should be paid attention to in practical engineering.关键词
边坡稳定性/极限分析/孔隙水压力/非均质性/抗滑桩Key words
slope stability/limit analysis/pore water pressure/heterogeneity/anti-slide pile分类
建筑与水利引用本文复制引用
颜平,颜丹..抗滑桩加固非均质边坡稳定性上限分析[J].人民长江,2024,55(8):202-209,8.基金项目
上海市"科技创新行动计划"软科学研究领域青年项目(22692193700) （22692193700）
