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以现场考察和工程地质勘察为基础,详细分析了刘家湾陡坡高路堤左侧桩板墙的工程地质条件及变形特征。在此基础上,提出了3种治理措施,并进行了方案的比选。运用FLAC3D对新抗滑桩设计进行了模拟,分析了新抗滑桩施工后的应力、位移和塑性区分布情况,并对新抗滑桩施工后的位移进行了监测。研究表明:新桩加固后旧桩没有产生新的位移;新桩施工后模型塑性区分布较少,填筑路基与边坡基本没有塑性屈服区分布;新抗滑桩施工后,极大地改善了填方路基的稳定性。
Based on the field investigation and engineering geological survey, the engineering geological conditions and deformation characteristics of the left wall of the steep slope embankment in Liujiawan are analyzed in detail. On this basis, three kinds of governance measures are put forward, and the comparison and selection of programs are carried out. The design of new anti-slide piles was simulated by FLAC3D. The stress, displacement and plastic zone distribution of the new anti-slide piles were analyzed. The displacement of new anti-slide piles was monitored. The results show that the new pile does not produce any new displacement after the new pile is strengthened. The plastic zone of the new pile is less distributed and there is no plastic yield zone in the subgrade and slope. The new anti-slide pile greatly improves the plastic deformation zone Subgrade stability.