Numerical Simulation of Soil Levee Slope Instability Using Particle-Flow Code Method

Su, Huaizhi; Fu, Zhaoqing; Gao, Ang; Wen, Zhiping

doi:10.1061/(asce)nh.1527-6996.0000327

“…By virtue of Euler formula, the general solutions of ordinary differential equations (6) to ( 8) can be written as follows The coefficients of 𝐵 𝑗 and 𝐶 𝑗 (𝑗 = 1,2, … ,6) appeared in equations ( 17) and (18) are…”

Section: Boundary Conditions and General Solutionsmentioning

confidence: 99%

“…Besides analytical methods, numerical simulation is also a useful tool to investigate the dynamic interactions among ocean waves, offshore structures and seabed deposits. Different water waves, complex constitutive relations of seabed soil, and irregular boundaries of the topics can be modeled [11][12][13][14][15][16][17][18] .…”

Section: Introductionmentioning

confidence: 99%

Dynamic Response and Liquefaction Potential of Porous Seabed Induced by Partial Standing Ocean Waves

Wang,

Liu,

Liu

et al. 2023

Preprint

0

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The analysis of ocean wave-induced dynamic response of a porous seabed is particularly important for coastal and geotechnical engineers when designing and constructing maritime structures. In this study, an analytical solution is presented to analyze the dynamic response and liquefaction potential of a poro-elastic seabed induced by partial standing waves with arbitrary reflectivity. The porous seabed is modeled using Biot’s theory describing the propagation of elastic waves, and coupled deformation and water flow of porous media, whereas the ocean waves are described using linear ocean wave theory. Based on the mixed boundary-value conditions, explicit expressions of displacements, effective stresses and excess pore water pressure of seabed are derived with consideration of the effects of inertial forces, compressibility of solid and fluid, and arbitrary reflectivity of standing waves. The results of degenerated analytical solutions are compared with the existing ones to verify the correctness of the proposed method. The effects of several pertinent parameters of ocean wave-seabed system, including reflection coefficient, phase lag and period of standing waves, depth of water, permeability, degree of saturation, and shear modulus of seabed deposits, etc., on the dynamic response of seabed and liquefaction potential, are examined and discussed.

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“…Besides analytical methods, numerical simulation is also a useful tool to investigate the dynamic interactions among ocean waves, offshore structures and seabed deposits. Different water waves, complex constitutive relations of seabed soil, and irregular boundaries of the topics can be modeled 11 – 18 .…”

Section: Introductionmentioning

confidence: 99%

“…www.nature.com/scientificreports/ offshore structures and seabed deposits. Different water waves, complex constitutive relations of seabed soil, and irregular boundaries of the topics can be modeled [11][12][13][14][15][16][17][18] .…”

mentioning

confidence: 99%

Dynamic response and liquefaction potential of porous seabed induced by partial standing ocean waves

Wang,

Liu,

Liu

et al. 2023

Sci Rep

2

0

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The analysis of ocean wave-induced dynamic response of a porous seabed is particularly important for coastal and geotechnical engineers when designing and constructing maritime structures. In this study, an analytical solution is presented to analyze the dynamic response and liquefaction potential of a poro-elastic seabed induced by partial standing waves with arbitrary reflectivity. The porous seabed is modeled using Biot’s theory describing the propagation of elastic waves, and coupled deformation and water flow of porous media, whereas the ocean waves are described using linear ocean wave theory. Based on the mixed boundary-value conditions, explicit expressions of displacements, effective stresses and excess pore water pressure of seabed are derived with consideration of the effects of inertial forces, compressibility of solid and fluid, and arbitrary reflectivity of standing waves. The results of degenerated analytical solutions are compared with the existing ones to verify the correctness of the proposed method. The effects of several pertinent parameters of ocean wave-seabed system, including reflection coefficient, phase lag and period of standing waves, depth of water, permeability, degree of saturation, and shear modulus of seabed deposits, etc., on the dynamic response of seabed and liquefaction potential, are examined and discussed. It is found that the reflection of standing wave has a significant effect on the dynamic response and liquefaction potential of porous elastic seabed. Compared with that of no wave reflection, the liquefaction depth of seabed induced by fully-reflected standing waves increases 82.49% under certain conditions of wave-seabed system. In addition, phase lag, wave period, water depth and mechanical and physical properties of seabed soil such as saturation, permeability and shear modulus have different effects on the dynamic response and liquefaction potential of porous elastic seabed. The investigation of the dynamic response and liquefaction of the porous elastic seabed under partial standing ocean waves will help to better predict the influence of standing waves on breakwaters and seabed soil, and can provide some guidance for the design of offshore structures.

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“…e regularity of dynamic change of real mesostructures of soil is the foundation of the macro-and mesointegrated research [1][2][3][4]. Investigating the characterization of mesostructural parameters can provide sufficient evidence for macro-and mesointegrated modeling schemes [1,[5][6][7]. As soil deformation is gradual, the change of real mesostructures is continuous [8,9].…”

Section: Introductionmentioning

confidence: 99%

A Continuous Test Method for Dynamic Change of Real Mesostructures of Soil

Qian

¹

,

Liu

²

,

Yao

³

et al. 2022

Mathematical Problems in Engineering

1

0

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The regularity of dynamic change of real mesostructures of soil is the foundation of the macro- and mesointegrated research. Mesoscale research about continuous image acquisition in real soils, identifying and quantifying mesostructures, is the subject of current interest. Soil mesostructure measurement method is the basis of modeling, and the development of rapid, direct, and lower-cost methods has great practical value for engineering practice. Combined with conventional triaxial loading test equipment, optical measurement, mesoscopic imaging tracking system, and digital image technology, a new method for measuring the dynamic change of the soil mesostructure is designed. This integrated approach to observation and acquisition is realized by direct observation and continuous image capture for dynamic change of real mesostructures of soil. The methods are used to analyze the high compressibility of a certain clay, shear zone development of cement soil, and erosive effects of ecological soil in order to investigate the continuous variation of mesostructures during the shear test. The aim of this paper is to provide a simple, straightforward, continuous, and low-cost test method for revealing the characteristics of consecutive change of real mesostructures of soil in the conventional triaxial test.

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Numerical Simulation of Soil Levee Slope Instability Using Particle-Flow Code Method

Cited by 19 publications

References 25 publications

Dynamic Response and Liquefaction Potential of Porous Seabed Induced by Partial Standing Ocean Waves

Dynamic Response and Liquefaction Potential of Porous Seabed Induced by Partial Standing Ocean Waves

Dynamic response and liquefaction potential of porous seabed induced by partial standing ocean waves

A Continuous Test Method for Dynamic Change of Real Mesostructures of Soil

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