中外公路2026，Vol.46Issue(2)：31-38,8.DOI:10.14048/j.issn.1671-2579.2026.02.004
降雨条件下高陡路堑边坡开挖稳定性分析及加固方案研究
Study on Stability Analysis and Reinforcement Scheme of High Steep Road Cutting Slope Excavation under Rainfall Conditions
摘要
Abstract
To study the influence of excavation and rainfall on the stability of high steep road cutting slopes,relying on an actual project,the unsaturated slope seepage and stability were analyzed by a self-programmed calculation program using FLAC3D software,and the corresponding reinforcement optimization scheme was studied through the analysis of the pile spacing of anti-slip piles and the length of the anchoring section.The results indicate that:① The surface soil of the slope is greatly affected by excavation.With the decrease of the excavation slope ratio,the horizontal displacement decreases;the vertical displacement remains basically unchanged,and stress concentration exists at the toe of the slope at all step levels;② The top and toe of the slope are greatly affected after rainfall;the overall displacement increases;the instability increases,and the location of the potential sliding surface moves to the middle and lower parts;③ By comprehensively considering the slope states under rainfall and no-rainfall conditions,an excavation slope ratio of 1:1.5 is the most appropriate;④ By comprehensively analyzing the support effects under rainfall and no-rainfall conditions,it is most suitable when the pile spacing of anti-slip piles is 8 m,and the length of the anchoring section is 13 m.关键词
高陡路堑边坡/边坡开挖/降雨/FLAC3D/抗滑桩Key words
high steep road cutting slope/slope excavation/rainfall/FLAC3D/anti-slip pile分类
交通工程引用本文复制引用
陈振山,彭浩..降雨条件下高陡路堑边坡开挖稳定性分析及加固方案研究[J].中外公路,2026,46(2):31-38,8.基金项目
国家自然科学基金资助项目(编号:42130719) （编号:42130719）
