The paper represents a series of numerical studies relating to the performance of geosynthetic-reinforced stone columns in sand soil. To determine the behaviour of the encased column, parameters such as stone column diameter, modulus of elasticity of the stone, stiffness of the geosynthetic encasement and the load ratio were considered in non-linear static analyses resulted from applying gravity loads. The results are discussed in the form of axial load–settlement curves of the stone column, lateral deformation of a stone column, column bulging, stress concentration around the column and the load ratio of models. The results of numerical studies demonstrate that increased encasement stiffness gives rise to an increase in confinement pressure and load-bearing capacity. On the other hand, a decrease in the modulus of elasticity of the stone causes an increase in both soil horizontal stress and total stresses. Additionally, the stress concentration ratio value for encased columns with smaller diameters is more significant than that for columns with larger diameters, which is due to the mobilisation of confinement stresses in stone columns with smaller diameters.

中文翻译：

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土工合成石柱的行为研究

这篇论文代表了一系列与砂土中土工增强石柱的性能有关的数值研究。为了确定包裹柱的性能，在施加重力荷载的非线性静态分析中考虑了诸如石柱直径，石头的弹性模量，土工合成材料包裹层的刚度和荷载比等参数。结果以石柱的轴向载荷－沉降曲线，石柱的侧向变形，柱鼓胀，柱周围的应力集中以及模型的载荷比的形式进行了讨论。数值研究的结果表明，增加的包裹刚度会导致围压和承载能力的增加。另一方面，石头弹性模量的降低会引起土壤水平应力和总应力的增加。另外，直径较小的封闭柱的应力集中比值比直径较大的柱更显着，这是由于约束直径较小的石柱会产生限制应力。