Two-dimensional plane strain consolidation of unsaturated soils considering the depth-dependent stress

Wang, Lei; Shen, Sidong; Li, Tianyi; Wen, Minjie; Zhou, Annan

doi:10.1016/j.jrmge.2022.08.011

Cited by 2 publications

(2 citation statements)

References 30 publications

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“…[26][27][28] Nevertheless, within the field of unsaturated soils, limited studies have focused on investigating depth-dependent stress. 29 Currently, there are no literature reports on depthdependent initial stress in consolidation studies of USCF improved by permeable and impermeable columns.…”

Section: Introductionmentioning

confidence: 99%

“…Extensive research has been conducted within the field of consolidation theory for saturated soils, exploring stress variations with depth 26–28 . Nevertheless, within the field of unsaturated soils, limited studies have focused on investigating depth‐dependent stress 29 . Currently, there are no literature reports on depth‐dependent initial stress in consolidation studies of USCF improved by permeable and impermeable columns.…”

Section: Introductionmentioning

confidence: 99%

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Analytical solution for consolidation of unsaturated composite foundation improved by permeable and impermeable columns considering depth‐dependent initial stress

Qin,

Peng,

Gong

et al. 2024

Num Anal Meth Geomechanics

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The combination of permeable and impermeable columns is commonly employed to enhance the stability of natural ground and expedite the consolidation process while effectively reducing foundation settlement. This study presents a comprehensive investigation of the consolidation characteristics of unsaturated composite foundations (USCF) using various methods. Firstly, a mathematical model is developed under the assumption of equal strain, considering depth‐dependent initial stress. To obtain more generalized analytical solutions for excess pore pressures and foundation settlement, separation of variables, Laplace transformation, and inversion Laplace transformation are employed. Secondly, the accuracy of the proposed analytical solutions is validated by comparing them with two specific cases reported in the existing literature, achieved by reducing the compression modulus of columns. Lastly, a series of parameters are investigated to examine the consolidation characteristics of USCF considering depth‐dependent initial stress. The results demonstrate that the final settlement of the foundation will be overestimated while the variation of vertical stress along the depth is neglected. Furthermore, adjusting the values of area replacement ratios proves to be more effective and straightforward than modifying the compression modulus of columns in the reinforcement treatment of USCF.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Analytical solution for consolidation of unsaturated composite foundation improved by permeable and impermeable columns considering depth‐dependent initial stress

Qin,

Peng,

Gong

et al. 2024

Num Anal Meth Geomechanics

View full text Add to dashboard Cite

show abstract

Semi‐analytical solution for a simplified 1D chemo‐hydro‐mechanical model in fluid‐saturated viscoelastic clay

Zheng

Wang

Yang

et al. 2023

Num Anal Meth Geomechanics

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In this paper, a simplified chemo‐hydro‐mechanics (CHM) model, in which only solute concentration is considered in the aspect of chemistry, is proposed to reflect the viscoelastic deformation of clay soil. By using the proposed model, the responses of the excess pore‐fluid pressure, solute concentration, and displacement of the viscoelastic clay soil are derived through the Laplace transform method. Then, semi‐analytical solutions, in the time domain, are obtained via the inverse Laplace transform numerically. The influences of viscosity on excess pore‐fluid pressure, solute concentration, and displacement are investigated through an illustrative example. The results show that: (1) the clay soil in low viscosity can be simplified as an elastic model; (2) the higher viscosity not only accelerates the dissipation of excess pore‐fluid pressure, but also slows down the deformation of the clay soil; (3) the viscosity of clay soil poses little impact on the distribution of solute concentration.

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Two-dimensional plane strain consolidation of unsaturated soils considering the depth-dependent stress

Cited by 2 publications

References 30 publications

Analytical solution for consolidation of unsaturated composite foundation improved by permeable and impermeable columns considering depth‐dependent initial stress

Analytical solution for consolidation of unsaturated composite foundation improved by permeable and impermeable columns considering depth‐dependent initial stress

Semi‐analytical solution for a simplified 1D chemo‐hydro‐mechanical model in fluid‐saturated viscoelastic clay

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