In this paper,the reinforcement mechanism of the flexible geogrid-reinforced retaining wall is analyzed,based on a flexible geogrid-reinforced double stage retaining wall.ABAQUS finite element software and strength reduction method are used for this analysis.By comparing the results of a geogrid-reinforced retaining wall and those of a common one,the following conclusions are obtained:Under the gravity loading,the grid has little effect on the displacement of a reinforced retaining wall.When the plastic zone becomes a larger area,the grid obviously restrict the displacement of the deep region of the subgrade.The safety factor of the geogrid-reinforced retaining wall increases from 1.76 to 2.24.The relationship between the maximum stress of the grid and the depth of the buried depth is not simply linear.%以某柔性加筋双级挡墙为背景,采用ABAQUS有限元软件结合强度折减法,对该柔性加筋挡墙的加筋机理进行分析.通过对加筋挡墙与普通挡墙的分析结果进行对比,得出以下结论:自重情况下,格栅对于加筋挡墙的位移几乎没有影响.当塑性区发展至较大区域时,格栅对土体深层水平约束明显.加筋对该挡墙的安全系数由1.76提高到2.24.在该挡墙的条件下,格栅的最大应力并不是与埋置深度呈简单的线性关系.
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