Liquefaction Mitigation Using Stone Columns with Non-Darcy Flow Theory

One effective technique for mitigating the earthquake-induced liquefaction potential is the installation of stone columns. The permeability coefficients of stone columns are high enough to cause a high seepage velocity or expedited drainage. Under such conditions, the fluid flow law in porous media...

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Bibliographic Details
Published in:Geotechnical and geological engineering 2024-08, Vol.42 (6), p.4375-4399
Main Authors: Taslimian, Rohollah, Noorzad, Ali
Format: Article
Language:English
Subjects:
Civil Engineering
Darcys law
Earth and Environmental Science
Earth Sciences
Earthquakes
Finite element method
Flow theory
Fluid flow
Geotechnical Engineering & Applied Earth Sciences
Ground motion
Hydrogeology
Hydrostatic pressure
Impact analysis
Liquefaction
Membrane permeability
Mitigation
Nonlinear response
Numerical analysis
Original Paper
Permeability
Pore pressure
Pore water
Pore water pressure
Porous media
Porous media flow
Pressure effects
Seepage
Seismic activity
Seismic response
Stone
Stone columns
Terrestrial Pollution
Waste Management/Waste Technology
Water pressure
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Summary:One effective technique for mitigating the earthquake-induced liquefaction potential is the installation of stone columns. The permeability coefficients of stone columns are high enough to cause a high seepage velocity or expedited drainage. Under such conditions, the fluid flow law in porous media is not linear. Nevertheless, this nonlinear behavior in stone columns has not been evaluated in dynamic numerical analyses. This study proposes a dynamic finite element method that integrates nonlinear fluid flow law to evaluate the response of liquefiable ground improved by stone columns during seismic events. The impact of non-Darcy flow on the excess pore pressure and stress path compared to conventional Darcy law has been investigated numerically in stone columns. Furthermore, the effects of different permeability coefficients and stone column depths have been studied under near and far field strong ground motions. The results indicate that the non-Darcy flow increases the excess pore water pressure as high as 100% in comparison to the Darcy flow.
ISSN:0960-3182
1573-1529
DOI:10.1007/s10706-024-02785-6