Several studies on liquefaction using physical model tests and numerical analysis have been conducted in recent years; however, few studies have investigated the effect of liquefaction-induced settlement on structures. Especially, this settlement seriously influences on gravity foundation during earthquake. This study aims to investigate the settlement of the surrounding ground of steel pipe sheet pile (SPSP) foundation during liquefaction by using an effective stress analysis. 2D numerical modeling was used in this study and the behavior of undrained soil was idealized using a cocktail glass model. The numerical results were compared with experimental results from a 1-G shaking table test with a scale of 1:60. The results indicate that the settlement of surface ground and SPSP foundation rapidly increase when the liquefaction occurs and is significantly influenced by permeability coefficient of ground.

中文翻译：

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通过有效应力分析测量液化过程中钢管桩基础周围的地表运动

近年来，利用物理模型试验和数值分析进行了几项关于液化的研究；然而，很少有研究调查液化引起的沉降对结构的影响。尤其是这种沉降对地震时的重力地基影响很大。本研究旨在通过有效应力分析来研究液化过程中钢管板桩（SPSP）基础周围地基的沉降。本研究使用了二维数值建模，并使用鸡尾酒杯模型对不排水土壤的行为进行了理想化。数值结果与比例为 1:60 的 1-G 振动台试验的实验结果进行了比较。