Prediction of compressive creep behaviors of expansive soil exposed to freeze-thaw cycle using a disturbed state concept-based model

Cong, Shengyi; Nie, Zhong; Li, Xinyu; Tang, Liang; Ling, Xianzhang; Hu, Qingli; Li, Guoyu

doi:10.1016/j.coldregions.2022.103664

Cited by 8 publications

(3 citation statements)

References 44 publications

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“…Li et al [9] conducted a triaxial unloading creep test on artificially frozen soil and described its creep characteristics. Cong et al [10] conducted triaxial compression creep experiments on expanded soil under a freeze-thaw cycle and established a prediction formula that reflected the creep characteristics of mud-cured soil, and the test structure matched well with the model calculation results. Guan et al [11] carried out a graded loading creep test on open pit mine slip zone soil and established a fractional order damage creep model based on fractional order calculus and damage mechanics theory.…”

Section: Introductionmentioning

confidence: 89%

Creep Properties and Creep Modelling of Guilin Red Clay

Wei,

Gu,

Liu

et al. 2023

Applied Sciences

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In order to explore the creep characteristics of red clay under different pressures, the stress–strain curve and stress–strain–time curve of red clay under different pressures were obtained, and the triaxial shear and creep characteristics of red clay under different pressures were analysed. A triaxial shear test and creep test were carried out on red clay from Guilin as the research object under different pressures. The results show that: ➀ the cohesion and the angle of internal friction of red clay from Guilin, obtained from a triaxial shear test, are 57.20 kPa and 22.47°, respectively; ➁ according to the physical meaning of the parameters of the Burgers creep model, a simple and practical parameter inversion method is proposed, which can be used to obtain the parameters of the Burgers model for red clay under different perimeter pressures and differing deviatoric stress; and ➂ when comparing the calculation results with the test results, the correlation coefficients R2 of the two are above 0.9, with a good fitting effect, so the model can accurately describe the creep characteristics of red clay from Guilin. This study can provide a theoretical basis and technical support for engineering construction in the red clay area of Guilin.

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Section: Introductionmentioning

confidence: 89%

Creep Properties and Creep Modelling of Guilin Red Clay

Wei,

Gu,

Liu

et al. 2023

Applied Sciences

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“…Researchers worldwide have conducted studies on the creep model of frozen soil. Through field investigation and microstructure analysis, Cong et al 8 preliminarily discussed the creep failure mechanism of expansive soil slope after freeze–thaw (F–T) cycle and established the creep model of expansive soil used to predict the creep amount of each stage. He et al 9 performed a long-term graded loading creep test on salt rock samples.…”

Section: Introductionmentioning

confidence: 99%

Fuzzy random evaluation of creep model of frozen soft soil in metro tunnel construction using artificial ground freezing technique

Ya-feng

Yan-peng

Shen

et al. 2023

Sci Rep

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Mastering the creep characteristics of artificial frozen soil and scientifically evaluating the creep model is an important guarantee for the safety of subway tunnel freezing construction. Base on the construction of Nantong metro tunnel, the uniaxial compressive strength tests of the artificially frozen soft soil were carried out to obtain the influence law of temperature on the uniaxial compressive strength, and the uniaxial creep tests were carried out to obtain the influence law of temperature and stress grade on creep, at − 5, − 10 and − 15 °C. The experimental results show that the creep characteristics of frozen soft soil specimens have obvious fuzzy randomness. The traditional ant colony algorithm is improved by optimizing the pheromone fuzzification coefficient, which improves the search efficiency and avoids the local optimum effectively. Subsequently, the improved fuzzy ant colony algorithm is used to invert the flexibility parameters of commonly used permafrost creep models. The fuzzy weight of evaluation index and the fuzzy random evaluation matrix were determined to evaluate the optimal creep model under three different stress levels of frozen soft soil. Finally, the reliability of the fuzzy random evaluation method was verified by engineering measured data.

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“…Construction recommendations were also given. Based on a test section of a high filling airport constructed on a thick loess foundation, Zhu and Li [30] investigated the creep behavior of both intact compacted loess under high pressure and different initial conditions [31]. As for the creep behavior of geogrid, considering the influence of the reinforced soil on the creep characteristics of the geogrid, Wang et al [32] carried out a series of creep tests using a self-developed pullout test device, and found that compared with unconstrained conditions, the creep deformation of geogrid under the constraint of reinforced soil is reduced by 11.5% at most, and the ability to resist the creep deformation is better.…”

Section: Introductionmentioning

confidence: 99%

Experimental Research on the Creep Behavior of the Interface of Compacted Loess and High-Density Polyethylene Geogrid

Yuan,

Hu,

et al. 2023

Buildings

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The stability of geogrid-reinforced soil structure is closely related to the interface characteristics between geogrid and soil. However, the creep behavior of the soil–geogrid interface is still unrevealed. In this study, using a modified stress-controlled pullout device, influence of the normal pressure, dry density, and water content on creep behavior of interface of compacted loess and high-density polyethylene (HDPE) geogrid is investigated. A three-parameter empirical model and a Merchant element model were established through fitting analysis. Analysis results show that the normal pressure, dry density, and water content have significant effects on the creep shear displacement of the reinforced soil interface. Under the same pullout level, creep displacement of the interface increases with the increase of water content and decreases with the increase of dry density and normal pressure. Both the three-parameter empirical model and Merchant element model can describe the creep characteristics of the reinforced soil interface. The Merchant model is more accurate in the early stage, while the three-parameter empirical model is more suitable for predicting the long-term creep deformation of the interface of compacted loess and geogrid.

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Prediction of compressive creep behaviors of expansive soil exposed to freeze-thaw cycle using a disturbed state concept-based model

Cited by 8 publications

References 44 publications

Creep Properties and Creep Modelling of Guilin Red Clay

Creep Properties and Creep Modelling of Guilin Red Clay

Fuzzy random evaluation of creep model of frozen soft soil in metro tunnel construction using artificial ground freezing technique

Experimental Research on the Creep Behavior of the Interface of Compacted Loess and High-Density Polyethylene Geogrid

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