Experimental Study on Creep Mechanical Properties of Warm Frozen Soils

Peng, Yating; He, Junlin; Jiang, Haiqiang

doi:10.1007/s40098-023-00754-z

Cited by 2 publications

(2 citation statements)

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“…(3) The stress and displacement of soil in the process of pile formation are not considered. (4) The deformation and contact between the soil layers are coordinated…”

Section: Assumptionmentioning

confidence: 99%

“…With the warming of the global climate, permafrost is gradually transforming into warm frozen soil, and the warm frozen soil (WFS) embankment phenomenon continues to emerge. WFS, also known as plastic frozen soil, is a special frozen soil body undergoing a drastic phase change with a temperature of about −1 • C. It is characterized by high water content, high compressibility, low strength, and poor engineering properties [3,4]. Studies have shown that, in sections with large amounts of WFS, the proportion of embankment diseases is increased.…”

Section: Introductionmentioning

confidence: 99%

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Stabilization Effects of Inclined Soil–Cement Continuous Mixing Walls for Existing Warm Frozen Soil Embankments

Sun,

Li,

Huo

et al. 2024

Buildings

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Affected by climate warming and anthropogenic disturbances, the thermo-mechanical stability of warm and ice-rich frozen ground along the Qinghai–Tibet Railway (QTR) is continuously decreasing, and melting subsidence damage to existing warm frozen soil (WFS) embankments is constantly occurring, thus seriously affecting the stability and safety of the existing WFS embankments. In this study, in order to solve the problems associated with the melting settlement of existing WFS embankments, a novel reinforcement technology for ground improvement, called an inclined soil–cement continuous mixing wall (ISCW), is proposed to reinforce embankments in warm and ice-rich permafrost regions. A numerical simulation of a finite element model was conducted to study the freeze–thaw process and evaluate the stabilization effects of the ISCW on an existing WFS embankment of the QTR. The numerical investigations revealed that the ISCW can efficiently reduce the melt settlement in the existing WFS embankment, as well as increase the bearing capacity of the existing WFS embankment, making it favorable for improving the bearing ability of composite foundations. The present investigation breaks through the traditional ideas of “active cooling” and “passive protection” and provides valuable guidelines for the choice of engineering supporting techniques to stabilize existing WFS embankments along the QTR.

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“…(3) The stress and displacement of soil in the process of pile formation are not considered. (4) The deformation and contact between the soil layers are coordinated…”

Section: Assumptionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%