Prior investigations have revealed that the stress characteristics of columns at different locations beneath an embankment vary. A failed column releases stress and causes significant increases in the stresses within neighbouring columns, possibly leading to progressive failure of adjacent columns and global failure of the embankment. Prior studies have presented insights into the progressive failure of column-supported embankments. However, limited insight has been provided into the progressive failure mechanism of geosynthetic-reinforced and rigid column-supported embankments. In this technical note, the effects of geosynthetic reinforcement on progressive failure are numerically analysed. A comparison of the progressive failure of rigid columns with and without geosynthetic reinforcement is first conducted. The restraining effects of geosynthetics on progressive failure of the columns and the influence of geosynthetic tensile stiffness on embankment stability are analysed. The results reveal that progressive failure is primarily governed by the distribution of the bending moment and the axial force within the columns. To further investigate the contribution of geosynthetics to resisting progressive failure of rigid columns, the internal forces in the columns and tensile strains in the geosynthetics are discussed.

先前的调查表明，路堤下方不同位置的柱的应力特性会有所不同。失效的柱会释放应力，并导致相邻柱内的应力显着增加，可能导致相邻柱的逐步破坏和路堤的整体破坏。先前的研究已经提出了对立柱支撑路堤逐步破坏的见解。但是，对于土工合成材料加筋和刚性柱支撑路堤的渐进破坏机制，我们提供的了解有限。在本技术说明中，数值分析了土工合成材料对渐进式破坏的影响。首先进行了带有和不带有土工合成材料增强的刚性柱的渐进破坏的比较。分析了土工合成材料对柱体渐进破坏的抑制作用以及土工合成材料的拉伸刚度对路堤稳定性的影响。结果表明，渐进式破坏主要由弯矩和柱内轴向力的分布决定。为了进一步研究土工合成材料对抵抗刚性柱渐进破坏的贡献，讨论了土工合成材料中柱的内力和拉伸应变。