Comparison of Fine-Grained Soil Liquefaction Using Numerical Modeling and Susceptibility Criteria: A Case Study

Although most of the previous studies focused on the effect of liquefaction on clean sandy soils, new observations revealed that silty soils are also prone to liquefaction. Therefore evaluating the liquefaction hazard at silty soil sites is also of particular importance. The primary objective of thi...

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Bibliographic Details
Published in:Geotechnical and geological engineering 2024-09, Vol.42 (7), p.5753-5767
Main Authors: Johari, A., Pourbeirak, S., Amjadi, A. H.
Format: Article
Language:English
Subjects:
Amplitude
Amplitudes
Case studies
Civil Engineering
Constitutive models
Criteria
Earth and Environmental Science
Earth Sciences
Earthquake prediction
Earthquakes
Fine-grained soils
Finite element method
Geological hazards
Geotechnical Engineering & Applied Earth Sciences
Hydrogeology
Liquefaction
Mathematical analysis
Mathematical models
Modelling
Numerical analysis
Numerical models
Original Paper
Sandy soils
Seismic activity
Silty soils
Soil
Susceptibility
Terrestrial Pollution
Waste Management/Waste Technology
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Summary:Although most of the previous studies focused on the effect of liquefaction on clean sandy soils, new observations revealed that silty soils are also prone to liquefaction. Therefore evaluating the liquefaction hazard at silty soil sites is also of particular importance. The primary objective of this research paper was to assess the liquefaction occurrence of a fine-grained silty profile at a specific site in southern Iran. This assessment was conducted through a combination of numerical analysis and the application of liquefaction susceptibility criteria. To achieve this, a finite element model incorporating the PM4Silt advanced constitutive model was employed. The findings of our study revealed that the liquefaction susceptibility criteria exhibited a higher likelihood of predicting liquefaction compared to numerical modeling when applied to the case study site. Therefore in some depths, despite the prediction of liquefaction by susceptibility criteria, in the numerical modeling results, liquefaction has not been observed even by relatively strong earthquakes. Furthermore, the numerical modeling results reveal that one of the most important parameters affecting soil liquefaction in addition to earthquakes’ amplitude is the input motion frequency content so that earthquakes with lower PGA but larger Fourier amplitude at low frequencies have a greater effect on the liquefaction of fine-grained soils.
ISSN:0960-3182
1573-1529
DOI:10.1007/s10706-024-02858-6