Quasi-static analysis of saturated multi-layered soils with anisotropic permeability and elastic superstrata

Ai, Zhi Yong; Wang, Lujun; Shi, Ben Kai

doi:10.1080/19648189.2018.1562996

Cited by 5 publications

(2 citation statements)

References 21 publications

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“…The slope of the shear strength vs. matric suction failure envelope is the angle of shear resistance with respect to the matric suction φ b . Many researchers had focused on the φ b [11][12][13][14][15], but the relationship between the shear strength and φ b was not very clearly up to now.…”

Section: The Theory Of Shear Strength Of Unsaturated Soilmentioning

confidence: 99%

Strength Characteristic of Unsaturated Moraine Soil at High-Plateau Airport

Feng,

Chen,

et al. 2023

Pol. J. Environ. Stud.

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Triaxial tests were performed on samples of unsaturated moraine soil at a high-plateau airport of China by using the unsaturated soil triaxial apparatus. In the tests, the matric suction and net confining pressure were controlled. In the scheme of the tests, the matric suctions were controlled at 0 kPa, 50 kPa, 100 kPa and 200 kPa. The net confining pressures were controlled at 100 kPa, 200 kPa, 300 kPa and 400 kPa. The results showed that for the unsaturated moraine soil, c' and φ ' increase in the matric suction and their growth rates were similar. The relationship between volumetric strain and net confining pressure showed that the specimens were in a state of dilatancy with a small net confining pressure and the amount of dilatancy rapidly decreased and developed into a shear shrinkage state with an increase in net confining pressure. The last amount of shrinkage was stable at approximately 0.6%. Also, the soil suction characteristic curve for the studied soil was obtained by the tests and the suction stress increased with the matric suction.

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Section: The Theory Of Shear Strength Of Unsaturated Soilmentioning

confidence: 99%

Strength Characteristic of Unsaturated Moraine Soil at High-Plateau Airport

Feng,

Chen,

et al. 2023

Pol. J. Environ. Stud.

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“…Ai et al 39 and Ai and Zeng 40 proposed the analytical layer element method to optimize the stiffness matrix and improve the calculation stability of the layered soil consolidation problem. To study the effect of groundwater, Ai et al 41 modified the matrix elements in the analytical layer-element method to consider the permeable and impermeable conditions at the groundwater table. In comparison, there are few studies on the soil consolidation considering groundwater.…”

Section: Introductionmentioning

confidence: 99%

The consolidation behavior of layered fractional viscoelastic soils considering groundwater

Ai,

Ye,

Jiang

et al. 2024

Num Anal Meth Geomechanics

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This paper investigates the consolidation behavior of multi‐layered viscoelastic soils considering groundwater. First, the fractional Merchant viscoelastic model is introduced to describe the behavior of multi‐layered viscoelastic soils considering groundwater. Later, the governing equations are extended to a viscoelastic medium by virtue of the elastic‐viscoelastic corresponding principle in the Laplace–Hankel domain. According to the extended precise integration method, the soil layer is divided into a series of layer units. Then the relationship between general stress vector and general displacement vector on the top and bottom planes is established. Every two adjacent layer units are combined into one layer in each computational iteration. The solutions in the Laplace–Hankel domain are obtained by considering the boundary conditions, and numerical inversion is performed to obtain the solutions in the physical domain. The practicability of the present method is assessed by comparing the numerical results with those in the existing literature and done by ABAQUS. Finally, the effects of groundwater table, properties of the soils above groundwater table, load depth, viscoelastic parameters, and soil stratification are investigated.

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Analytical solutions of Laplace's equation for layered media in a cylindrical domain and its application in seepage analyses

Jiang

Zhou

2020

International Journal of Mechanical Sciences

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Quasi-static analysis of saturated multi-layered soils with anisotropic permeability and elastic superstrata

Cited by 5 publications

References 21 publications

Strength Characteristic of Unsaturated Moraine Soil at High-Plateau Airport

Strength Characteristic of Unsaturated Moraine Soil at High-Plateau Airport

The consolidation behavior of layered fractional viscoelastic soils considering groundwater

Analytical solutions of Laplace's equation for layered media in a cylindrical domain and its application in seepage analyses

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