Geotechnical Earthquake Engineering and Soil Dynamics V
Effectiveness of Stone Column in Liquefaction Mitigation
Publication: Geotechnical Earthquake Engineering and Soil Dynamics V: Liquefaction Triggering, Consequences, and Mitigation (GSP 290)
ABSTRACT
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.
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Information & Authors
Information
Published In
Geotechnical Earthquake Engineering and Soil Dynamics V: Liquefaction Triggering, Consequences, and Mitigation (GSP 290)
Pages: 207 - 216
Editors: Scott J. Brandenberg, Ph.D., University of California, Los Angeles, and Majid T. Manzari, Ph.D., George Washington University
ISBN (Online): 978-0-7844-8145-5
Copyright
© 2018 American Society of Civil Engineers.
History
Published online: Jun 7, 2018
ASCE Technical Topics:
- Business management
- Continuum mechanics
- Dynamic loads
- Dynamics (solid mechanics)
- Earthquakes
- Engineering mechanics
- Environmental engineering
- Foundations
- Geohazards
- Geology
- Geomechanics
- Geotechnical engineering
- Mitigation and remediation
- Pollution
- Practice and Profession
- Rocks
- Seismic loads
- Shallow foundations
- Soil liquefaction
- Soil mechanics
- Soil pollution
- Soil properties
- Soil treatment
- Solid mechanics
- Structural dynamics
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