Determination of the parameters of rock viscoelastic creep model and analysis of parameter degradation [PDF]
Scientific Reports, 2023 Different stress creep tests are conducted on the sandstone in this study to better describe the creep properties of rocks under different stress states. A model that describes the rock creep process is established.
Zhiming Zheng, Yu Yang, Cheng Pan
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A nonlinear creep model for surrounding rocks of tunnels based on kinetic energy theorem
Journal of Rock Mechanics and Geotechnical Engineering, 2023 The initiating condition for the accelerated creep of rocks has caused difficulty in analyzing the whole creep process. Moreover, the existing Nishihara model has evident shortcomings in describing the accelerated creep characteristics of the ...
Wenbo Liu +4 more
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Creep model of roadway surrounding rock considering hardening effect and damage effect. [PDF]
PLoS ONEThe influence of confining pressure on creep characteristics was analyzed by carrying out creep tests of rocks under different confining pressures. A new creep model of roadway surrounding rock considering the combined influence of hardening effect and ...
Hongmiao Lv
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Nonlinear damage creep model of concrete considering the influence of temperature and its parameter variation law analysis. [PDF]
PLoS ONEIn order to study the creep characteristics of concrete under different temperatures, the uniaxial creep test of concrete is carried out. On this basis, the nonlinear creep model of concrete is established by using the fractal order derivative theory ...
Lu Wang
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Creep model of bond-degradation in deep granite based on variable radius particle clump [PDF]
Scientific ReportsThe creep failure of rocks is related to its microstructure, external loading and time. A nonlinear yield model was introduced to describe the variation in the cohesion and friction angle with plastic strain and intergranular stress.
Chunzhe Jin +5 more
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Study on the fractional creep model of roadway filling paste under the coupling effect of pore water pressure and stress [PDF]
HeliyonFilling paste in deep roadways is significantly affected by groundwater, especially high pore water pressure, which increases the complexity and variability of the filling paste's mechanical properties.
Hongmiao Lv
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Creep failure characteristics and damage creep model of red layer soft rock based on Perzyna viscoplastic theory [PDF]
Scientific ReportsRock creep is essentially a process of damage accumulation. According to the damage evolution of rock under creep conditions, the TAW2000 triaxial test system is used to carry out triaxial creep test on red layer soft rock taken from Yibo Tunnel in ...
Lei Chen +6 more
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An isochronous stress ratio logarithmic strain curve based clay creep model considering the effects of hardening and damage [PDF]
Scientific ReportsCreep is one of the typical mechanical properties of clay, and studying the creep mechanical properties of clay is of great significance to construction projects in clay sites. This study conducted creep tests on Chengdu clay and found that the soil mass
Peng Wang, Yin Tang, Peng Ren, Hua Zhang
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Creep constitutive model considering nonlinear creep degradation of fractured rock
International Journal of Mining Science and TechnologyStability analysis of underground constructions requires a model study of rock masses’ long-term performance. Creep tests under different stress conditions was conducted on intact granite and granite samples fractured at 30° and 45° angles. The experimental results indicate that the steady creep strain rates of intact and fractured rock present an ...
Wang Chunping +5 more
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An elastic-viscoplastic creep model for describing creep behavior of layered rock
Frontiers in Materials, 2023 To describe the full-stage creep behavior of layered rock accurately, a new elastic-viscoplastic creep model is proposed based on fractional order theory in this manuscript, which consists of a Hooke elastomer, a fractional Abel dashpot, a Kelvin body ...
Yukun Li +3 more
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