CAJ | 학술논문

山区公路陡坡填方路基因其整体稳定性和透水性较差而成为特大降雨造成公路水毁的重灾对象之一。在北京“7.21”公路水毁的恢复工程中，以加筋桩板石笼挡墙形成的山区新型防洪透水路基结构被提出和应用。利用ABAQUS软件对该路基结构进行模拟，以流固耦合算法对其在不同强度降雨条件下的变形和孔压进行了分析，并利用强度折减法对其稳定性做出分析和评价。结果表明，板桩加筋石笼组合挡墙在强降雨前后都有较好的稳定性，是山区公路防洪透水路基的首选支挡结构之一。
산구공로두파전방로기인기정체은정성화투수성교차이성위특대강우조성공로수훼적중재대상지일。재북경“7.21”공로수훼적회복공정중，이가근장판석롱당장형성적산구신형방홍투수로기결구피제출화응용。이용ABAQUS연건대해로기결구진행모의，이류고우합산법대기재불동강도강우조건하적변형화공압진행료분석，병이용강도절감법대기은정성주출분석화평개。결과표명，판장가근석롱조합당장재강강우전후도유교호적은정성，시산구공로방홍투수로기적수선지당결구지일。
The steep embankment subgrade of mountain highway becomes one of the severely affected ob-jects, which is damaged by heavy rainfall, because of its poor overall stability and permeability. The new-style flood-prevention permeable subgrade structure formed by reinforced pile-plate gabion retaining wall is put forward and applied in the restoration project of Beijing 7.21 Highway Damaged by floods. The subgrade structure is simulated by ABAQUS software, then its deformation and pore pressure under differ-ent strength of rainfall are analyzed by fluid-solid coupling algorithm, and its stability is analyzed and evaluated by strength reduction method. The results show that the permeable pile-plate gabion retaining wall structure has preferable stability whether before or after the rainfall. Therefore, the reinforced pile-plate gabion retaining wall is one of the preferred flood-prevention permeable retaining structures of mountain highway.