Analytical assessment of pullout capacity of reinforcements in unsaturated soils

Ghazavi, Mahmoud; Mahboobi, Abbas

doi:10.1016/j.geotexmem.2024.06.003

Geotextiles and Geomembranes

2024

DOI: 10.1016/j.geotexmem.2024.06.003

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Analytical assessment of pullout capacity of reinforcements in unsaturated soils

Mahmoud Ghazavi,

Abbas Mahboobi

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Investigation of shear mechanical behaviors of geogrid-coral sand interfaces

Luo,

Ding,

et al. 2024

Geosynthetics International

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Geogrid-reinforced coral sand (GRCS) effectively enhances the strength and stability of marine geo-structures in island and coastal areas. The complex interaction and underlying mechanism of the geogrid-coral sand interface potentially determine the mechanical properties of the GRCS. In this study, large-scale interfacial shear tests were carried out to investigate the mechanical behaviors of geogrid-coral sand interfaces under the coupled influence of grain size, geogrid properties, and stress level. Comparisons with siliceous sand indicate that the mechanical properties of the geogrid-coral sand interface are excellent but suffer from more complex influences originating from particle properties. The interfacial friction angle is more sensitive to grain size, whereas the pseudo cohesion is more sensitive to aperture properties. The shear interface shows a general evolution trend of “contraction-dilation-contraction”, with the maximum and final dilation becoming more prominent as the aperture size and stress level decrease. The increase in grain size, vertical stress and geogrid apertures induces a thicker interface with more particle crushing. Given the microscopic geogrid-coral sand interaction, the force characteristics of the aperture are further analyzed, and an equivalent additional stress calculation method is developed to quantitatively characterize the effects of grain size, geogrid properties, and stress level.

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Investigation of shear mechanical behaviors of geogrid-coral sand interfaces

Luo,

Ding,

et al. 2024

Geosynthetics International

View full text Add to dashboard Cite

show abstract

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Analytical assessment of pullout capacity of reinforcements in unsaturated soils

Cited by 1 publication

References 93 publications

Investigation of shear mechanical behaviors of geogrid-coral sand interfaces

Investigation of shear mechanical behaviors of geogrid-coral sand interfaces

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