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Quantitative description of stress-dependent post-peak brittle characteristics and numerical implementation
In this study, based on true-triaxial compression tests, five typical post-peak brittle characteristics are summarized, and the stress dependence is...
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Post-Peak Stress–Strain Curves of Brittle Hard Rocks Under Different Loading Environment System Stiffness
To systematically study the influence of loading environment system stiffness ( LESS ) on post-peak stress–strain curves and failure modes of brittle...
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Experimental and damage constitutive study of the stress-induced post-peak deformation and brittle–ductile behaviours of prismatic deeply buried marble
Unlike shallow rock, deeply buried rock presents significant brittle–ductile behaviour during the post-peak deformation process. This paper concerns...
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Study on post-peak stress-seepage characteristics of limestone under triaxial cyclic loading and unloading conditions
In order to study the post-peak permeability evolution of limestone under triaxial cyclic loading and unloading conditions, this paper takes...
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Effect of the Intermediate Principal Stress on Pre-peak Damage Propagation in Hard Rock Under True Triaxial Compression
It is of foremost importance to understand the mechanisms of damage propagation in rock under true triaxial stress. True triaxial compression tests...
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Experimental study on crack evolution behavior and constitutive model of granite based on the deviatoric stress to peak strength ratio
Rock crack evolution and propagation have an adverse effect on rock mass deformation and strength, so studying the crack evolution process is...
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Post-peak Stress–Strain Curves of Brittle Rocks Under Axial- and Lateral-Strain-Controlled Loadings
To systematically study the influence of axial - and lateral - strain - controlled loadings on the strength and post-peak deformation behaviors of brittle...
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Evaluation method of rock brittleness based on post-peak energy conversion under monotonic and cyclic triaxial compression
Rock brittleness and brittle failure play significant roles in deep underground space stability, unconventional gas extraction drilling, hydraulic...
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Influence of Index Properties and Semi-Quantitative Geological Characteristics of Brittle Rocks on Their Post-Peak Behavior
The rock mass behavior can be studied using the complete stress–strain curve obtained from laboratory tests. To capture the complete curve and...
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Quantifying Post-peak Behavior of Rocks with Type-I, Type-II, and Mixed Fractures by Develo** a Quasi-State-Based Peridynamics
The post-peak behaviors of rocks significantly impact safety assessments and structural designs in underground civil engineering. However, accurately...
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Post-peak mechanical property and a new strain softening model for rocks subjected to freeze–thaw cycles
In this paper, the mechanical properties and strain softening model of rock in cold regions after the peak were investigated. Freeze–thaw cycle tests...
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Analysis of pre-peak strain energy storage transformation mechanism of diorite under triaxial loading–unloading paths
To address the unclear instability mechanism of a rock mass under a complex stress path and considering the widely recognized research methods with...
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A method to predict the peak shear strength of rock joints based on machine learning
In geotechnical and tunneling engineering, accurately determining the mechanical properties of jointed rock holds great significance for project...
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Creep strain analysis and an improved creep model of granite based on the ratio of deviatoric stress-peak strength under different confining pressures
Creep refers to the deformation of rock with time under long-term applied stress, which occurs in most underground engineering. The creep behavior of...
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Velocity-Dependent Effect on the Peak Shear Strength of Rock Joints Considering the Distribution Characteristics of Contact Joint Surface
This study aims to elucidate the mechanism of velocity-dependent peak shear strength (PSS) for rock joints by examining the three-dimensional...
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Mathematical Modelling of Peak and Residual Shear Strength of Rough Rock Discontinuities Using Continued Fractions
Estimating the shear strength of large in situ rock discontinuities is often required to assess the stability of rock masses. This estimation is,...
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Excavation-induced deformation and stress responses of a highway tunnel in fault fracture rock zone with high geo-stress: a case study of **angjunshan tunnel
Tunnel excavation in high geo-stress shattered fault zone usually causes lining cracking, tunnel collapse and arch settlement because of rock...
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Peak shear strength model considering the dilation and shear failure effect of actual contact joint asperities
To consider joint asperities degradation effect during the shear process, the average effective dip angle of the actual contact joint surface is...
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Modelling of the post-peak response of abutment-backfill systems: a new hysteretic model for OpenSees
The findings of numerous analytical/computational studies, tests, and in-situ observations have highlighted the importance of the...
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Probabilistic Estimation of Rock Load Acting on Tunnels Considering Uncertainty in Peak and Post-peak Strength Parameters
This paper deals with estimation of loads relaxed by surrounding rocks on underground excavations that might be a problematic issue because of...
