A new model for wave-induced instantaneous liquefaction in a non-cohesive seabed with dynamic permeability

Zhou, Mingchao; Jeng, Dong‐Sheng; Qi, Wen-Gang

doi:10.1016/j.oceaneng.2020.107597

Cited by 15 publications

(24 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The difference is that the previous dynamic permeability model (Wu and Jeng, 2019;Wu et al, 2020) was found to disagree with the permeability increase during soil liquefaction (Arulanandan and Sybico, 1992;Ha et al, 2003;Haigh et al, 2012;Wang et al, 2013;Shahir et al, 2014;Ueng et al, 2017), which was reproduced by Zhou et al (2020b). Nevertheless, the dynamic permeability model (Zhou et al, 2020b) poses difficulties in nonlinear convergence. Numerical divergence can even occur when using large model parameters or fine computational mesh or simulating the seabed under two-dimensional (2D) wave loading, making the application limited.…”

Section: Introductionmentioning

confidence: 91%

“…To address this issue, Zhou et al (2021) modeled the instantaneous liquefaction problem in physics as a nonlinear complementarity problem (NCP) in mathematics. The improvements over the dynamic permeability model (Zhou et al, 2020b) are apparent. Within the NCP treatment (Zhou et al, 2021), a Karush-Kuhn-Tucker (KKT) condition is constructed specified for instantaneous liquefaction.…”

Section: Introductionmentioning

confidence: 97%

“…However, this extension will pose an ill-condition issue to the global matrix system due to the loss of solid-phase resistance in the liquefied zone. Recently, Zhou et al (2020b) tried to model the instantaneous liquefaction from a new perspective, i.e. characterizing the fluid-phase flow as a dynamic permeability model instead of the Darcy's law with constant permeability.…”

Section: Introductionmentioning

confidence: 99%

“…The idea is motivated by the literature (Wu and Jeng, 2019;Wu et al, 2020), which characterized the soil permeability 𝑘 𝑠 being a function of the pore pressure 𝑝. The difference is that the previous dynamic permeability model (Wu and Jeng, 2019;Wu et al, 2020) was found to disagree with the permeability increase during soil liquefaction (Arulanandan and Sybico, 1992;Ha et al, 2003;Haigh et al, 2012;Wang et al, 2013;Shahir et al, 2014;Ueng et al, 2017), which was reproduced by Zhou et al (2020b). Nevertheless, the dynamic permeability model (Zhou et al, 2020b) poses difficulties in nonlinear convergence.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

A non-Darcy flow model for a non-cohesive seabed involving wave-induced instantaneous liquefaction

Zhou

Jeng

et al. 2021

Ocean Engineering

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 91%

Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A non-Darcy flow model for a non-cohesive seabed involving wave-induced instantaneous liquefaction

Zhou

Jeng

et al. 2021

Ocean Engineering

View full text Add to dashboard Cite

“…The problem of liquefaction of partially saturated soils seems to be important in many areas, also, from an engineering point of view, e.g., wave-inducted seabed liquefaction [32,33], blast-induced densification in liquefiable sediments [34], submarine large-scale landslides triggered by gas dissociation [4], etc. Another interesting case relates to wet mine tailings storage facilities, where the zone of partial saturation could reach a dozen meters [35].…”

Section: Introductionmentioning

confidence: 99%

Modelling of Static Liquefaction of Partially Saturated Non-Cohesive Soils

Świdziński

Smyczyński

2022

Applied Sciences

View full text Add to dashboard Cite

Static soil liquefaction is widely known to be a serious danger to the stability of structures. The phenomena governing pore water generation, which leads to liquefaction in fully saturated soils, are already quite well described. However, much less is known of these phenomena occurring in partially saturated porous media, although this, too, is an important issue in geotechnics. This study presents the application of a semi-empirical model to predict the response of partially saturated soils under undrained conditions. The model proposed is based on an incremental equation describing the pre-failure undrained response of partially saturated non-cohesive soils during monotonic shearing in a standard triaxial test. Improved differential equations taking into account pore fluid compressibility were implemented together with empirical coefficients describing soil skeleton compressibility during the unloading phase. Model coefficients were determined in triaxial compression tests. The influence of the saturation level represented by Skempton’s parameter B on the full spectrum of predicted stress paths was shown. For the analyzed saturation range, the maximum stress deviator normalized by initial mean effective stress varied from 0.38 to 1.67 for B values between 0.93 and 0.29, respectively. Model predictions were confronted with the results of triaxial tests for two types of non-cohesive soils (quartz medium sand and copper ore post-flotation industrial tailings). Good agreement between experimental data and theoretical predictions was achieved.

show abstract

An analytical solution for the dynamic response of a seawater‐sloping seabed‐bedrock system under an oblique incident P wave

Shan

Xie

Dong

et al. 2023

Num Anal Meth Geomechanics

View full text Add to dashboard Cite

Many offshore marine structures are built on seabeds with slight or considerable slopes, while most analytical studies have focused on the dynamic responses of horizontal seabeds. Based on the theory of porous media, an analytical solution for the response of a sloping seabed to earthquakes is developed in this paper. Stress and displacement responses can be shown at any location of the seabed.Using numerical examples, we analyze the influence of the slope angle, frequency and angle of incident waves, and thicknesses of the seawater and sediment layers on the dynamic response of the seabed. The results show that the solid displacement amplification factor of the surface of the horizontal seabed is always constant, while that of the sloping seabed changes periodically along the seabed surface. Even at a small site, the difference between a horizontal seabed and a sloping seabed is still significant. The slope angle has different effects on the seabed at different depths, and the inclination plays an amplification role at some depths and a reduction role at other depths. With an increase in slope angle, the difference between a horizontal seabed and a sloping seabed becomes more significant. Especially at natural frequencies, the amplification factor becomes more significant with increasing slope angle. Therefore, even though the same seawater depth is used in the model, a horizontal seabed model cannot be used to analyze the dynamic response of a sloping seabed or significant errors will occur.

show abstract

A new model for wave-induced instantaneous liquefaction in a non-cohesive seabed with dynamic permeability

Cited by 15 publications

References 46 publications

A non-Darcy flow model for a non-cohesive seabed involving wave-induced instantaneous liquefaction

A non-Darcy flow model for a non-cohesive seabed involving wave-induced instantaneous liquefaction

Modelling of Static Liquefaction of Partially Saturated Non-Cohesive Soils

An analytical solution for the dynamic response of a seawater‐sloping seabed‐bedrock system under an oblique incident P wave

Contact Info

Product

Resources

About