State Index for Interpreting the State-Dependent Behavior of Granular Soil: A Review

Yan, Cheng; Shen, Yijun; Zhao, Wei; Sun, Yifei

doi:10.1007/s11831-023-09941-w

Cited by 3 publications

(1 citation statement)

References 134 publications

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“…Since it is widely accepted that the cyclic behaviour and liquefaction resistance of clean sands and silty sands depend on the initial state, it is convenient to adopt a unified framework capable of taking into account the combined influence of void ratio and effective confining pressure in a satisfactory way. In this context, critical state soil mechanics (CSSM) approach has been applied to clean sands (Jefferies and Been 2016;Viana da Fonseca et al 2022;Yan et al 2023) and more recently to silty sands as well (Huang and Chuang 2011;Hsiao and Phan 2016;Porcino et al 2021;Rahman and Sitharam 2020;Stamatopoulos 2010;Zuo et al 2023) for characterising undrained monotonic and cyclic strength i.e. cyclic liquefaction resistance, static liquefaction/instability (Porcino et al 2020;Rahman and Sitharam 2020;Stamatopoulos 2010;Zuo et al 2023) and failure patterns (Porcino et al 2021;Wei et al 2023;Yang and Sze 2011a).…”

Section: Background and Literature Reviewmentioning

confidence: 99%

Assessment of undrained cyclic resistance of sand with non-plastic fines under sustained shear stress using a critical state interpretation

Tomasello,

Porcino

2024

Bull Eng Geol Environ

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There are many geotechnical applications involving dams, embankments and slopes where the presence of an initial static shear stress prior to the cyclic loadings plays an important role. The current paper presents the experimental results gathered from undrained cyclic simple shear tests carried out on non-plastic silty sand with fines content in the range 0-30% with the consideration of sustained static shear stress ratio (α). Two distinct parameters, namely the conventional state parameter Ψ, and the equivalent state parameter Ψ*, are introduced in the context of critical state soil mechanics (CSSM) framework to predict failure mode and undrained cyclic resistance (CRR) of investigated soils. It is proved that the failure patterns for silty sands are related to (a) the initial states of soils (Ψ or Ψ*) and (b) the combination of initial shear stress with respect to cyclic loading amplitude. At each α, the CRR-Ψ (or Ψ*) correlation can be well represented by an exponential trend which is practically unique for both clean sands and silty sands up to a threshold fines content (fthre≅24.5%). Varying α from low to high levels simply brings about a clockwise rotation of the CRR-Ψ (or Ψ*) curves around a point. This CRR-Ψ (or Ψ*) platform thus provides an effective methodology for investigating the impact of initial shear stress on the cyclic strength of both clean sands and silty sands. The methodology for estimating Ψ (or Ψ*) state parameters from in-situ cone penetration tests in silty sands is also discussed.

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