Investigating Mechanical Behaviors of Rocks Under Freeze–Thaw Cycles Using Discrete Element Method

Huang, Chenchen; Zhu, Cheng; Ma, Yifei; Hewage, Shaini Aluthgun

doi:10.1007/s00603-022-03027-y

Cited by 25 publications

(1 citation statement)

References 72 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In recent years, large-scale projects such as transportation construction (Li et al., 2022; Yahaghi et al., 2021) and mining (Feng et al., 2022; Wang et al., 2021) are gradually developing into high-altitude cold regions. Due to the heavy rain and snow and large temperature difference in high-altitude cold regions, the FTWCs induced by the periodic changes in temperature induces freeze-thaw damage for rock, which accelerates the propagation and coalescence of internal crack (Cao et al., 2022; Liu et al., 2022; Huang et al., 2022; Qiao et al., 2022). Under loading conditions, the rock strength deteriorates significantly and the deformation exhibits strong nonlinear characteristics (Gao et al., 2021; Hou et al., 2022).…”

Section: Introductionmentioning

confidence: 99%

A new damage constitutive model for frozen-thawed sandstone under triaxial conditions: Considering the characteristics of pre-peak compaction and post-peak residual strength

Xiong,

Zhou,

Gao

et al. 2023

International Journal of Damage Mechanics

View full text Add to dashboard Cite

The study of the constitutive model under stress loading for rock after undergoing freeze-thaw weathering cycles (FTWCs) treatment has important theoretical significance for the site operation and numerical calculation of rock mass engineering in cold regions. In this work, a series of FTWCs treatment tests of sandstone were carried out, and the evolution characteristics of the T2 spectrum distribution curve for sandstone before and after FTWCs treatment were analyzed utilizing nuclear magnetic resonance (NMR) technology. The schematic diagram of freeze-thaw damage evolution for sandstone was drawn, and the damage evolution mechanism was analyzed. Evolution laws of the stress-strain curves, peak and residual strength, peak and residual strain, and Young's modulus of sandstone under different FTWCs and confining pressures were analyzed by conventional triaxial compression tests. A piecewise constitutive model under triaxial stress loading for sandstone after undergoing FTWCs treatment was established, and the model considered the significant influence of FTWCs on the nonlinear deformation in the compaction stage and residual strength. By introducing error analysis indexes, the proposed model and published models were compared with the experimental data, it was found that the proposed model's performance is better than the published models, which indicated that the proposed model has good performance and strong universality.

show abstract

Section: Introductionmentioning

confidence: 99%

A new damage constitutive model for frozen-thawed sandstone under triaxial conditions: Considering the characteristics of pre-peak compaction and post-peak residual strength

Xiong,

Zhou,

Gao

et al. 2023

International Journal of Damage Mechanics

View full text Add to dashboard Cite

show abstract

Investigating Mechanical Characteristics of Rocks Under Freeze–Thaw Cycles Using Grain-Based Model

Huang,

Zhu,

2024

Rock Mech Rock Eng

View full text Add to dashboard Cite

Based on the discrete element method (DEM), a water-contained grain-based model (GBM) is developed in this study to evaluate the effects of freeze–thaw cycles (FTCs) on the mechanical characteristics of the rock. A set of freeze–thaw and uniaxial compression tests is carried out to explore the impact of micro damage caused by FTCs on the mechanical prosperities of rock samples. By monitoring the development and distribution of micro-cracks during freeze–thaw test and uniaxial compression test, the damage mechanism of FTCs is revealed from a microscopic perspective, which shows that FTCs deteriorate the strength and brittleness parameters as exponential functions. The parametric analysis is carried out to explore the influence of porosity and mineral components on the mechanical behaviors of rock against freeze–thaw and uniaxial loadings. Based on the parametric analysis results, it is found that UCS, Young’s modulus, and total strain energy at peak stress decrease with the increase of porosity and clay content, which emphasizes the contributions of porosity and mineral components on the mechanical properties of rock samples. It is proved that the water-contained grain-based model developed in this study can capture the damage caused by FTCs on the mechanical performance of rock from a microscopic perspective, which provides novel perspectives on the phenomenon of rock degradation in response to fluctuations in temperature.

show abstract

Mechanical Behavior and Damage Evolution Properties of Sandstone with Parallel Planar Flaws Under Freeze–Thaw Cycles

Guo,

Wang,

Liu

et al. 2024

Rock Mech Rock Eng

View full text Add to dashboard Cite

Investigating Mechanical Behaviors of Rocks Under Freeze–Thaw Cycles Using Discrete Element Method

Cited by 25 publications

References 72 publications

A new damage constitutive model for frozen-thawed sandstone under triaxial conditions: Considering the characteristics of pre-peak compaction and post-peak residual strength

A new damage constitutive model for frozen-thawed sandstone under triaxial conditions: Considering the characteristics of pre-peak compaction and post-peak residual strength

Investigating Mechanical Characteristics of Rocks Under Freeze–Thaw Cycles Using Grain-Based Model

Mechanical Behavior and Damage Evolution Properties of Sandstone with Parallel Planar Flaws Under Freeze–Thaw Cycles

Contact Info

Product

Resources

About