Experimental study of factors affecting the viscosity-based pore pressure generation model and the pseudo plastic behaviour of liquefiable soils

Mele, Lucia; Lirer, Stefania; Flora, Alessandro

doi:10.1016/j.sandf.2024.101466

Soils and Foundations

2024

DOI: 10.1016/j.sandf.2024.101466

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Experimental study of factors affecting the viscosity-based pore pressure generation model and the pseudo plastic behaviour of liquefiable soils

Lucia Mele,

Stefania Lirer,

Alessandro Flora

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2024

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Cited by 2 publications

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Estimation of dynamic soil properties for geotechnical analysis in the Niger Delta using index testing and empirical correlations

Kennedy

2024

Discov Geosci

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This study investigated geotechnical properties of subsurface soils from Mbiama town in Rivers State, Niger Delta region through laboratory index testing and development of empirical correlations to estimate dynamic soil parameters. Grain size analyses revealed heterogeneous stratigraphy transitioning from upper clayey sands to lower gravelly sands deposited under changing fluvio-deltaic conditions. Atterberg limits exhibited decreasing plasticity trends with depth confirming the textural variations. Laboratory data conforms to layering architecture inferred from depositional facies analyses. Predictive models were developed relating Standard Penetration Test blow counts (SPT-N) and shear wave velocity (Vs) to depth, moisture content and percentage sand. High regression coefficients validated models' accuracy in reproducing over 90% of field measurements. Factor of safety against liquefaction was correlated to SPT-N, accounting for density-dependent properties. Index-based characterizations aligned well with trends predicted by the empirical correlations. This research demonstrated robust indirect estimation of dynamic geotechnical indices for foundation design and seismic risk analysis in data-scarce Niger Delta through standardized field and laboratory index testing integrated with depositionally-linked predictive models.

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Estimation of dynamic soil properties for geotechnical analysis in the Niger Delta using index testing and empirical correlations

Kennedy

2024

Discov Geosci

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Threshold strain for the accumulation of excess pore-water pressure in saturated coral sands under complex cyclic loading patterns

Qin,

Yang,

Long

et al. 2024

Ocean Engineering

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Experimental study of factors affecting the viscosity-based pore pressure generation model and the pseudo plastic behaviour of liquefiable soils

Cited by 2 publications

References 28 publications

Estimation of dynamic soil properties for geotechnical analysis in the Niger Delta using index testing and empirical correlations

Estimation of dynamic soil properties for geotechnical analysis in the Niger Delta using index testing and empirical correlations

Threshold strain for the accumulation of excess pore-water pressure in saturated coral sands under complex cyclic loading patterns

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