One-dimensional consolidation of over-consolidated soil under time-dependent loading

Xie, Kongliang; Wang, Kun; Chen, Guohong; Hu, Anfeng

doi:10.1007/s11709-008-0009-7

Cited by 10 publications

(11 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The analytical solutions of equation (12), with the above conditions, have been developed by Schiffman & Stein (1970), Lee et al (1992), Xie & Pan (1995) and Zhu & Yin (1999) among others.…”

Section: Uncoupled and Coupled 1d Consolidation Theoriesmentioning

confidence: 99%

“…The compressibility of the soil layer m v also plays an important role in the rate of consolidation. Xie & Pan (1995) further developed an analytical solution for a layered system under time-dependent loading. Pyrah (1996) showed that the 1D consolidation behaviour of layered soils consisting of two layers with the same value of the c v , but different k and m v were quite different.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

One-dimensional consolidation theories for layered soil and coupled and uncoupled solutions by the finite-element method

Huang¹,

Griffiths²

2010

Géotechnique

View full text Add to dashboard Cite

One-dimensional consolidation theories for layered soil have been re-examined. Coupled (settlement and excess pore pressure), uncoupled (excess pore pressure only) and the classical Terzaghi equation are solved by the finiteelement method. By accounting only for changes in the coefficient of consolidation (c v ), the classical Terzaghi approach is unable to satisfy the flow continuity conditions at the interface between layers.

show abstract

Section: Uncoupled and Coupled 1d Consolidation Theoriesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

One-dimensional consolidation theories for layered soil and coupled and uncoupled solutions by the finite-element method

Huang¹,

Griffiths²

2010

Géotechnique

View full text Add to dashboard Cite

show abstract

“…Where it is assumed that soil particles are incompressible (dVs = 0). The change in the void volume dVv over change in time t is given by Equation 6.…”

Section: Idealization Of One-dimensional Consolidation Of Stabilized mentioning

confidence: 99%

“…Recent advancement of mathematical modelling in geomechanics has seen the development of numerous published research works of one-dimensional consolidation of soils by analytical and numerical methods [1][2][3][4][5][6][7][8][9][10][11][12][13]. Despite of that, not many analytical and numerical solutions that solved one-dimensional consolidation problem of stabilized peat were found in the literature of geomechanics.…”

Section: Introductionmentioning

confidence: 99%

Analytical and Numerical Modelling of One-Dimensional Consolidation of Stabilized Peat

Wong

Somanathan

2019

Civ Eng J

View full text Add to dashboard Cite

The objective of the paper is to compare and evaluate analytical and numerical solutions of one-dimensional consolidation of stabilized peat. The type of analytical method used to solve the problem is exact method by separation of variables and utilization of Fourier series. Plaxis 2D 8.2 Professional version software was used to find numerical solution to the problem by employing the finite element method. One-dimensional consolidation problem of stabilized peat was solved numerically and validated with the one solved analytically based on laboratory experimental results. From the results, it was discovered that the consolidation characteristics of stabilized peat evaluated numerically were found to have close approximation to those evaluated analytically. There is a novel value in developing an accurate numerical prediction for the vertical consolidation of stabilized peat considering the complexity of the soil treatment method. It must be noted that peat is highly problematic because it is produced from plant decomposition with extremely high organic matter. 399 for 7 days before testing. It is notable that oedometer consolidation apparatus is sufficient for testing the stabilized soil due to the fact that the soil was homogeneously mixed with the binding admixtures and silica sand. As such, it could be reliably used to simulate the one-dimensional deformation and drainage characteristics of the stabilized soil as the soil dissipation of excess pore water pressure became less significant over time due to the cementation process in the stabilized soil. Furthermore, the equipment set up for oedometer testing is simple and not time consuming as compared to that of a more advanced equipment such as Rowe consolidometer. The complexity of Rowe consolidometer setup is evident in the published work of Baral et al. [18] which is about the study of radial consolidation characteristics of soft clay based on large specimens. To develop a proper understanding and to ensure the reliability of the test results, it would be helpful to back analyze and validate the experimental results based on the analytical equation with the ones developed from numerical solution using Plaxis 2D 8.2 Professional version software. As such, the paper is concentrated at evaluating the results of one-dimensional consolidation tests from standard oedometer consolidation apparatus, which were determined based on the idealization of analytical model and later, validating the results using the finite element software.

show abstract

“…Later, Olson 5 solved the radial and vertical consolidation of soil under construction load. Xie et al 6,7 developed the 1D nonlinear consolidation theory of single-layer soil and double-layered soil under linear loading on the premise that the consolidation coefficient remains unchanged. Since then, more practical factors have been considered by researchers, such as nonlinear deformation, 8 viscoelastic deformation, 9,10 and load mode, 11 which further enriches and develops the 1D consolidation theory of soft soils.…”

Section: Introductionmentioning

confidence: 99%

One‐dimensional nonlinear creep consolidation of soft soils with time‐dependent drainage boundary under construction load

Cui

Cao

Liu

et al. 2023

Num Anal Meth Geomechanics

View full text Add to dashboard Cite

To further investigate the nonlinear creep properties of soft soils and the effect of variable loading, a one-dimensional (1D) nonlinear creep consolidation system of soft soils under construction load is established, including time-dependent drainage (TDD) boundary, elastic-viscous-plastic deformation, non-Darcy flow (NDF), and self-weight stress. The consolidation problem is presented by virtue of the finite volume method, and the associated calculation program is compiled. The efficiency of the numerical solutions is validated by comparing the degenerated solution against analytical, semi-analytical, and numerical solutions. Then the influences of construction load and nonlinear creep model parameters on consolidation are studied. The results show that TDD boundary and construction load significantly affect consolidation, and the larger the loading rate and interface parameter, the faster soil's overall dissipation process of excess porewater pressure (EPP). Meanwhile, at the earlier consolidation stage, considering the secondary consolidation effect will cause an increase in excess pore-water pressure (EPP). Prolonging the construction period, decreasing the interface parameter, considering the self-weight stress, or increasing the non-Newtonian index will all aggravate this phenomenon. Additionally, the TDD boundary, construction load, and non-Newtonian index flow (NNIF) are not a determinant for final soil settlement.

show abstract

One-dimensional consolidation of over-consolidated soil under time-dependent loading

Cited by 10 publications

References 9 publications

One-dimensional consolidation theories for layered soil and coupled and uncoupled solutions by the finite-element method

One-dimensional consolidation theories for layered soil and coupled and uncoupled solutions by the finite-element method

Analytical and Numerical Modelling of One-Dimensional Consolidation of Stabilized Peat

One‐dimensional nonlinear creep consolidation of soft soils with time‐dependent drainage boundary under construction load

Contact Info

Product

Resources

About