Theoretical analysis for thermal consolidation of marine sediments with depth variability subjected to time-dependent loading and heating

Hu, Maorong; Feng, Wei-Qiang; Yang, Jing

doi:10.1016/j.oceaneng.2023.113894

Cited by 3 publications

(5 citation statements)

References 37 publications

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“…established a nonlinear thermo‐hydro‐elastodynamic coupling model to investigate the thermal‐hydro‐elastodynamic responses of saturated soil around a spherical cavity. Furthermore, Hu et al 38 . developed a THM constitutive model, considering the thermal compression effect, and studied the thermal consolidation behavior of a single‐layer saturated marine sediment under variable loadings and temperature.…”

Section: Introductionmentioning

confidence: 99%

“…On the other hand, Liu et al 1,37 established a nonlinear thermo-hydro-elastodynamic coupling model to investigate the thermal-hydro-elastodynamic responses of saturated soil around a spherical cavity. Furthermore, Hu et al 38 developed a THM constitutive model, considering the thermal compression effect, and studied the thermal consolidation behavior of a single-layer saturated marine sediment under variable loadings and temperature. However, it is important to note that natural saturated soil exhibits distinct layered characteristics, and different saturated soil layers display varying consolidation behaviors.…”

mentioning

confidence: 99%

“…2 are coefficients to be determined based on the given boundary conditions. Substituting Equation (41) into Equation (38), the expression for the temperature increment can be obtained as:…”

mentioning

confidence: 99%

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Thermal consolidation of layered saturated soil under time‐dependent loadings and heating considering interfacial flow contact resistance effect

Xie,

Wen,

et al. 2024

Num Anal Meth Geomechanics

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Due to the presence of tiny gaps at the interface of two layers of saturated soil, water seepage occurs at a slower rate within these gaps, resulting in laminar flow at the interface. Based on the Hagen‐Poiseuille law, a general imperfect flow contact model was established for layered saturated soil interfaces by introducing the flow contact transfer coefficient Rω and the flow partition coefficient ηω. The investigation focused on the thermal consolidation behavior of layered saturated soil foundations under variable loadings considering the flow contact resistance effect at the interface. By employing the Laplace transform and its inverse transform, a semi‐analytical solution for the thermal consolidation of layered saturated soil foundations was derived. In the context of a two‐layer soil system, the effects of Rω, ηω, and permeability coefficient k on the consolidation process were examined. The obtained results were then compared with three other interfacial contact models, thereby confirming the rationality of the presented model. The study findings revealed that the flow contact resistance effect leads to a clear jump in the pore water pressure. Furthermore, an increase in Rω and a decrease in ηω were found to significantly enhance displacement and pore water pressure, while having minimal impact on the temperature increment. These insights contribute to a more comprehensive understanding of the thermal consolidation behavior of layered saturated soil foundations and underscore the significance of accounting for the flow contact resistance effect in such analyses.

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Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Thermal consolidation of layered saturated soil under time‐dependent loadings and heating considering interfacial flow contact resistance effect

Xie,

Wen,

et al. 2024

Num Anal Meth Geomechanics

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“…Recently, some theoretical models regarding the thermal consolidation of saturated soils have been developed. Hu et al 38 proposed a one-dimensional thermal consolidation model considering the depth-dependent permeability and compressibility of the marine sediments; Lu et al 39 considered the time-variable permeability and compressibility to establish a one-dimensional thermal consolidation model, and to derive a numerical solution under the partial drainage boundaries. In addition, Samarakoon and McCartney 40 proposed a new constitutive model for the thermal volume change of normally consolidated clays by considering the effect of initial effective stress on the variation of the apparent preconsolidation stress, and obtained a numerical solution for the thermal consolidation of the saturated clays treated with PVTD.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, some theoretical models regarding the thermal consolidation of saturated soils have been developed. Hu et al 38 . proposed a one‐dimensional thermal consolidation model considering the depth‐dependent permeability and compressibility of the marine sediments; Lu et al 39 .…”

Section: Introductionmentioning

confidence: 99%

A semi‐analytical model for coupled THM consolidation of saturated clays improved by PVTD considering thermal contraction

Tian,

Jiang,

Gui

et al. 2024

Num Anal Meth Geomechanics

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Previous studies have demonstrated that saturated normally consolidated and lightly over‐consolidated clays undergo contraction when heated due to a reduction in preconsolidation pressure. A linear constitutive model is proposed to describe the thermal contraction, with this model, governing equations are developed for the coupled thermo‐hydro‐mechanical (THM) consolidation induced by a prefabricated vertical thermo‐drain (PVTD). Corresponding semi‐analytical solutions are derived employing the Laplace transform and validated via comparison with experimental results, existing numerical model, and custom finite element method (FEM) model. Subsequently, comprehensive parametric analyses are carried out to investigate the THM coupling consolidation behaviors of the clays. Outcomes show that aside from surcharge load, generation of excess pore water pressure in soils can also be induced by thermal contraction, difference in thermal expansibility between pore water and soil grains, and thermo‐osmosis, where the influence of thermal contraction on the excess pore water pressure is the most prominent among the three factors.

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One-Dimensional Consolidation Modeling of Soil Surrounding Buried Geothermal Pipelines: Incorporating Heat Diffusion Processes

Zhang,

Tian

et al. 2024

Transp Porous Med

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Theoretical analysis for thermal consolidation of marine sediments with depth variability subjected to time-dependent loading and heating

Cited by 3 publications

References 37 publications

Thermal consolidation of layered saturated soil under time‐dependent loadings and heating considering interfacial flow contact resistance effect

Thermal consolidation of layered saturated soil under time‐dependent loadings and heating considering interfacial flow contact resistance effect

A semi‐analytical model for coupled THM consolidation of saturated clays improved by PVTD considering thermal contraction

One-Dimensional Consolidation Modeling of Soil Surrounding Buried Geothermal Pipelines: Incorporating Heat Diffusion Processes

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