Evaluation of Soil Liquefaction Potentials in Partially Drained Conditions

Umehara, Yasufumi; Zen, Kouki; Hamada, Kouji

doi:10.3208/sandf1972.25.2_57

Cited by 21 publications

(5 citation statements)

References 3 publications

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“…In addition, if the drainage conditions of the overlying soil are also good, the water in the sand layer can easily drain from the overlaying soil, and thus excessive pore water pressure is less likely to accumulate. The slight drainage during cyclic shear applications significantly affects the rate of accumulation of pore water pressure [43].…”

Section: Drainage Conditionmentioning

confidence: 99%

Interpretive Structural Modeling and MICMAC Analysis for Identifying and Benchmarking Significant Factors of Seismic Soil Liquefaction

et al. 2019

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Seismic soil liquefaction is considered as one of the most complex geotechnical earthquake engineering problems owing to the uncertainty and complexity involved in soil parameters, seismic parameters, and site condition factors. Each one of these parameters contains a variety of factors that trigger liquefaction and have varying degrees of importance. However, estimating accurate and reliable liquefaction-induced hazards requires identification and benchmarking of the most influential factors that control soil liquefaction. Seismic soil liquefaction factors were identified by Systematic Literature Review (SLR) approach and analyzed through Interpretive Structural Modeling (ISM) and the Cross-Impact Matrix Multiplication Applied to Classification (MICMAC) methodologies. The ISM model presented the relationships between fifteen seismic soil liquefaction factors and their benchmarking position from higher to lower-level significant factors in hierarchy. MICMAC is used to examine the strength of the relationship between seismic soil liquefaction significant factors based on their driving and dependence power. This research characterizes the identification and benchmarking of the seismic soil liquefaction factors and their relationships. The results show that the factors—duration of earthquake, peak ground acceleration, drainage condition, and standard penetration test (SPT) blow counts—influence seismic soil liquefaction directly and soil type is the governing factor that forms the base of the ISM hierarchy and consequently triggers seismic soil liquefaction. The results provide a more accurate way of selecting significant factors for establishment of seismic soil liquefaction potential and liquefaction-induced hazards risk assessment models.

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Section: Drainage Conditionmentioning

confidence: 99%

Interpretive Structural Modeling and MICMAC Analysis for Identifying and Benchmarking Significant Factors of Seismic Soil Liquefaction

et al. 2019

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“…A detailed experimental study (Umehara et al 1985) provides a set of empirical relationships for the factor SR, which are used in this study.…”

Section: Effect Of Partial Drainagementioning

confidence: 99%

Submarine landslides: Elements of analysis

Rahman

Jaber

1991

Marine Geotechnology

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The stability of seafloor sediments constitutes an important consideration in planning and design of various offshore facilities. The stresses induced either by waves during a storm or by shaking during an earthquake may cause shear failure in ocean floor sediments leading to landslides. In this paper, the basic elements of analysis for submarine landslides are presented. The loadings associated with both wave action and earthquakes are treated as random processes and some of the soil parameters are also considered to be random variables. The analyses for different modes of seafloor instability are formulated in a stochastic framework, which provides the basis for the evaluation of risk of submarine landslides in a given offshore region. Numerical results of some example analyses are also presented.

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“…Movement can appear in the form of influx [15], causing an increment in pore water pressure along an expansive partially drained path. It can appear in the form of efflux [16] upon shear stress reversals, causing a reduction in pore water pressure along a contractive partially drained path. Vaid and Eliadorani [17]-among others-showed how very small expansive volumetric strains can trigger instability under constant shear stress, transform undrained partial flow into the flow, and an initially stable undrained condition into an unstable condition.…”

Section: Introductionmentioning

confidence: 99%

The Partially Drained Behaviour of Dense Fibre-Reinforced Sands

Maleki Tabrizi,

Dibazar,

Hajialilue-Bonab

et al. 2023

Sustainability

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Strain paths allowing both volumetric changes and excess pore water pressure generation could be more critical than conventional drained or undrained paths as limiting boundaries. Due to the potential of fibre reinforcement to improve the mechanical behaviour of sands, this study investigated the influence of different strain paths, ranging from contractive to expansive partially drained, on the primary strength properties of fibre-reinforced sands. Triaxial tests were conducted to examine the effect of strain paths on the ultimate stress ratio, peak stress ratio, and the generation of excess pore water pressure in reinforced sands. The results indicate that the induced strain path significantly influences the behaviour of fibre-reinforced sands. The fibre reinforcement was able to significantly impact the tolerable peak deviatoric stresses and the induced ultimate stress ratio. It was also demonstrated that fibre reinforcement not only enhances the shear strength of sands but also increases their resistance to anisotropy induced by different experienced drainage conditions. Additionally, direct simple shear tests were conducted to evaluate the effects of shear modes, and the results were compared with triaxial tests.

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Evaluation of Soil Liquefaction Potentials in Partially Drained Conditions

Cited by 21 publications

References 3 publications

Interpretive Structural Modeling and MICMAC Analysis for Identifying and Benchmarking Significant Factors of Seismic Soil Liquefaction

Interpretive Structural Modeling and MICMAC Analysis for Identifying and Benchmarking Significant Factors of Seismic Soil Liquefaction

Submarine landslides: Elements of analysis

The Partially Drained Behaviour of Dense Fibre-Reinforced Sands

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