Abstract
The present paper studies the use of stone columns as a means of mitigating liquefaction potential. A numerical model using the 2D finite difference code FLAC is developed and validated with published experimental results from literature to simulate the shaking table test. The liquefaction potential of silty sand layer that was improved with stone columns was evaluated in terms of the maximum pore water pressure ratio \( r_{u} \) which is usually defined as the ratio of pore water pressure to the initial vertical effective stress in the soil. Soil liquefaction potential has often been defined when \( r_{u} \) reaches 1.0. Numerical analyses showed that the liquefaction potential decreased after stone columns reinforcement. Parametric analyses were performed to investigate the effect of the excitation frequency and amplitude and the effect of stone columns installation process on liquefaction potential.
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Ben Salem, Z., Frikha, W., Bouassida, M. (2018). Numerical Analysis of Liquefaction Susceptibility of Reinforced Soil with Stone Columns. In: Abdoun, T., Elfass, S. (eds) Soil Dynamics and Soil-Structure Interaction for Resilient Infrastructure. GeoMEast 2017. Sustainable Civil Infrastructures. Springer, Cham. https://doi.org/10.1007/978-3-319-63543-9_6
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DOI: https://doi.org/10.1007/978-3-319-63543-9_6
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