Influence of intermediate principal stress ratio on strength and deformation characteristics of frozen sandy soil under different moisture contents

Huang, Kun; Ma, Qianmin; Cai, Guojun; Ma, Dongdong; Yao, Zhaoming; Zhang, Hongpeng

doi:10.1016/j.coldregions.2023.103909

Cited by 7 publications

(4 citation statements)

References 29 publications

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“…Each direction of the testing machine was independently controlled with three control modes: displacement, load, and deformation. The comprehensive parameters and test procedures for the true triaxial tests have been previously outlined in relevant references (Huang et al 2023). As presented in Fig.…”

Section: True Triaxial Apparatusmentioning

confidence: 99%

“…Additionally, it provides essential model parameters for theoretical calculations of frozen walls (Yun et al 2017;Lu et al 2021). The frozen wall experiences a true triaxial stress state resulting from freezing pressure and in-situ stress (Huang et al 2022(Huang et al , 2023. Therefore, it is imperative to examine the mechanical properties of frozen soils under a complex stress state.…”

Section: Introductionmentioning

confidence: 99%

“…The stress-strain curves of geomaterials exhibit multiple distinct stages, with the σci and σcd serving as critical stress points (Martin and Christiansson 2009;Kong et al 2018;Feng et al 2019). Experimental findings demonstrate that the strength and deformation characteristics of frozen soil under a true triaxial stress state are highly complex (Chen et al 2018;Lei et al 2018;Lai 2021;Ma et al 2022;Huang et al 2023). Therefore, accurately predicting the relationship between strength and deformation has become a prominent research area.…”

Section: Introductionmentioning

confidence: 99%

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Mechanical Properties and Constitutive Model of Artificially Frozen Sandy Soils Under Different Intermediate Principal Stresses

Huang,

Ma,

Cai

et al. 2023

Preprint

Self Cite

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Triaxial compression tests were conducted on frozen sandy soils under a constant minimum principal stress (σ3 = 1.6 MPa) and various intermediate principal stresses (σ2 = 1.6, 3.4, 5.2, 7.0, 8.8, 9.8 MPa). The purpose of the research was to investigate the influence of intermediate principal stress (σ2) on the characteristic stress levels and the deformation characteristics. The test results obtained demonstrated that the crack damage stress and failure stress initially increase and then decrease with an increase in the σ2. However, the crack initiation stress exhibits an initial increase up to a specific value, after which it stabilizes. The difference in deformation between the σ2 and σ3 directions increased with increasing σ2. From the perspective of crack propagation, the influence mechanism of σ2 on the strength is discussed. The deformation difference was revealed using the stress superposition principle and Poisson’s effect. Finally, the constitutive model based on the Weibull distribution and Drucker-Prager strength criterion can accurately represent the stress-strain relationships of frozen sandy soils under various σ2 conditions.

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Section: True Triaxial Apparatusmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Mechanical Properties and Constitutive Model of Artificially Frozen Sandy Soils Under Different Intermediate Principal Stresses

Huang,

Ma,

Cai

et al. 2023

Preprint

Self Cite

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“…Shi et al [9] collaborated on the use of steel slag and cement to mitigate the challenge posed by a high water content in dredged soft soil. Huang et al [10] developed a comprehensive understanding of the adverse mechanical effects concerning the moisture content and the ratio of intermediate principal stress through rigorous true triaxial testing. However, as this ratio and moisture content increased, the detrimental effect gradually became more pronounced.…”

Section: Introductionmentioning

confidence: 99%

Solidification Treatment of Wastewater and Waste Soil Generated during Binhai Reclamation: A Study on Mechanical Properties and Resource Utilization

Yang,

Xu,

2023

Processes

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Coastal reclamation projects generate an accumulation of wastewater and waste soil, resulting in highly saturated soft soil. Presently, there is a scarcity of research regarding the lightweight solidification and three-dimensional mechanical properties of these soils. Additionally, there is a dearth of specialized models for stabilizing soils containing wastewater using lightweight solidification technology, and pertinent engineering solutions are lacking. By introducing solidifying agents and foaming agents to treat wastewater in soft fill soil, a novel type of solidified lightweight material is produced, imparting strength. This study investigates its three-dimensional mechanical properties. During triaxial tests with equal stress (σ3) and equal b values, the softening of the curve noticeably diminished at b = 0.25. In the plane strain test, cohesion increased by 10.7% compared to the traditional triaxial tests, and the internal friction angle increased by 11%. Subsequently, a three-dimensional Cambridge model was established. At elevated confining pressures, the corrected curve closely approximated the test curve, demonstrating a minimum model accuracy of approximately 96% at a confining pressure of 20 KPa. These findings offer valuable numerical references and a theoretical foundation for the efficient utilization of wastewater and waste soil.

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Mechanical properties and constitutive model of artificial frozen sandy soils under true triaxial stress state conditions

Huang,

Tang,

et al. 2024

Case Studies in Thermal Engineering

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Influence of intermediate principal stress ratio on strength and deformation characteristics of frozen sandy soil under different moisture contents

Cited by 7 publications

References 29 publications

Mechanical Properties and Constitutive Model of Artificially Frozen Sandy Soils Under Different Intermediate Principal Stresses

Mechanical Properties and Constitutive Model of Artificially Frozen Sandy Soils Under Different Intermediate Principal Stresses

Solidification Treatment of Wastewater and Waste Soil Generated during Binhai Reclamation: A Study on Mechanical Properties and Resource Utilization

Mechanical properties and constitutive model of artificial frozen sandy soils under true triaxial stress state conditions

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