ABSTRACT One of the most important concerns of railway industries is the loss of overall stability and permanent settlements of railway embankments (overlaid on liquefiable foundations) during earthquake. The effectiveness of sand columns in the improvement of stability and strength of the embankments was studied in this research. The embankments behavior during earthquakes in different heights, various sand columns area replacement ratios (Arr), various foundation permeability and different earthquake peak ground acceleration (PGA) were investigated in parametric analyses of a numerical model developed and validated here. The applicability and effectiveness of the obtained results in practice were illustrated.

中文翻译：

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砂柱对可液化基础上铁路路堤稳定性影响的研究

摘要铁路行业最重要的问题之一是地震期间铁路路堤（覆盖在可液化地基上）的整体稳定性和永久性沉降的丧失。本研究研究了砂柱在提高路堤稳定性和强度方面的有效性。在此处开发和验证的数值模型的参数分析中，研究了在不同高度、各种沙柱面积置换率 (Arr)、各种基础渗透率和不同地震峰值地面加速度 (PGA) 的地震期间的路堤行为。说明了所得结果在实践中的适用性和有效性。