Uncertainties of Numerical Simulation for Static Liquefaction Potential of Saturated Soils

Huang, W. H.; Shamas, Y.; Tran, K. H.; Imanzadeh, S.; Taibi, S.; de Cursi, E. Souza

doi:10.1007/978-3-031-47036-3_1

Cited by 1 publication

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“…Subsequently, by testing samples at different void ratios, a series of critical state points can be obtained. By analyzing these experimental results, it can be observed that all points are located within an interval delimited by two boundary lines, namely the upper and lower lines [43]. Subsequently, we can plot the fitted mean line for the CSL.…”

Section: 1mentioning

confidence: 98%

Experimental Study of Static Liquefaction Potential Considering the Uncertainty of the Critical State Line (CSL)

Huang,

Shamas,

Hoàn

et al. 2024

Preprint

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This study aims to explore the undrained shear behavior and static liquefaction potential of sand in both overconsolidated and normally consolidated states. Based on the uncertainty associated with the Critical State Line (CSL) and the state parameter (\(\psi\)) of the samples defined as the current void ratio (es) and the critical void ratio (ec) at the same mean effective stress (p'), the samples were classified into four states: heavily overconsolidation state (HO), intermediate overconsolidation state (IO), lightly overconsolidation state (LO), and normally consolidation state (NC). The latter corresponds to a very loose sand with initial relative density (Dr) of about − 20%. The study findings revealed significant differences in the undrained shear behavior among samples in different consolidation states. Samples in heavily (HO) and intermediate (IO) overconsolidation states exhibited a tendency of initial contraction followed by dilation, with the main difference lying in the presence of a distinct peak strength (qpeak). In contrast, samples lightly overconsolidated (LO) and normally consolidated (NC) only showed a contraction tendency, with the main difference being in residual strength (qresidual). Finally, exploration was conducted into the potential for static liquefaction under different consolidation states. The study found that for overconsolidated samples, their liquefaction potential is mainly controlled by the state parameter (\(\psi\)). As the state parameter increases, the sample's liquefaction potential also increases. Conversely, for normally consolidated samples, their liquefaction potential is determined by the initial mean effective stress (p'0), with the potential decreasing as the initial mean effective stress (p'0) increases.

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Section: 1mentioning

confidence: 98%