A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Effectiveness of Stone Column in Liquefaction Mitigation
Failure of superstructure resting on shallow foundation is one of the most catastrophic phenomena occurring due to liquefaction during earthquake. The present paper presents the 3D numerical modelling of shallow foundation resting on liquefiable soil under earthquake loading. The benchmark model simulation has been simulated first to obtain the dynamic behavior of a loose sand deposit with a surface footing. The responses of this model treated with stone column improvement under the same seismic loading has been analyzed and compared with the response of benchmark models (BM), focusing on the evaluation of the strengthening effect of soil columns and its effect on the behavior of the remediated soil deposits. Acceleration base input excitation of El Centro earthquake is applied to each model to monitor the displacements, liquefaction potential, and excess pore pressures (EPP). Based on the response of the model, the relative effectiveness of stone columns as mitigation measure can be gauged. PLAXIS-3D finite element software is used for the analysis. A significant reduction in EPP and settlement are visible with the use of stone column as remedial measures.
Effectiveness of Stone Column in Liquefaction Mitigation
Failure of superstructure resting on shallow foundation is one of the most catastrophic phenomena occurring due to liquefaction during earthquake. The present paper presents the 3D numerical modelling of shallow foundation resting on liquefiable soil under earthquake loading. The benchmark model simulation has been simulated first to obtain the dynamic behavior of a loose sand deposit with a surface footing. The responses of this model treated with stone column improvement under the same seismic loading has been analyzed and compared with the response of benchmark models (BM), focusing on the evaluation of the strengthening effect of soil columns and its effect on the behavior of the remediated soil deposits. Acceleration base input excitation of El Centro earthquake is applied to each model to monitor the displacements, liquefaction potential, and excess pore pressures (EPP). Based on the response of the model, the relative effectiveness of stone columns as mitigation measure can be gauged. PLAXIS-3D finite element software is used for the analysis. A significant reduction in EPP and settlement are visible with the use of stone column as remedial measures.
Effectiveness of Stone Column in Liquefaction Mitigation
Kumari, Sunita (author) / Sawant, Vishwas A. (author) / Mehndiratta, Siddharth (author)
Geotechnical Earthquake Engineering and Soil Dynamics V ; 2018 ; Austin, Texas
2018-06-07
Conference paper
Electronic Resource
English
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