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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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Using PFC2D to simulate the shear behaviour of joints in hard crystalline rock
Significant uncertainties remain regarding the assessment of the peak shear strength of rock joints. In recent years, Particle Flow Code (PFC) has...
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Effect of joint microcharacteristics on macroshear behavior of single-bolted rock joints by the numerical modelling with PFC
Joint properties play a controlling role in the strength of rock mass. In response to the situation that existing researches on bolting mechanism of...
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The Strength and Macro-mesoscopic Fracture Characteristics of 3D-printed Rock-like Specimens with Internal Parallel Joints
The internal parallel joints weaken the rock mass and they are more difficult to be studied than the exposed joints. The intact specimen and internal...
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Crack evolution and acoustic emission characteristics of rock specimens containing random joints under uniaxial compression
Joints greatly affect the mechanical behavior and crack evolution of jointed rock masses. In this paper, numerical specimens containing pre-existing...
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Experimental Study on Performance of Bolted Joints Under Tensile–Shear Loads
Bolt support is an effective method to improve the shear resistance of jointed rock mass, and is widely used in the reinforcement of fractured rock...
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Failure mode and dynamic response of loess slopes with tectonic joints under seismic action
The tectonic joints in loess have an important controlling effect on the stability of loess slopes, which are an essential factor in the study of...
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Application of Three-Dimensional Explicit Discontinuous Deformation Analysis on Wave Propagation in Rock Masses Using Three Viscous Boundaries with the Remedy for Artificial Joints
The three-dimensional explicit discontinuous deformation analysis (3D-EDDA), namely the deformable distinct element method (3D-DDEM), is first...
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Contribution of freefall and rock mass structure to post-fragmentation spreading of rockslides
Sudden freefall is very common in high-velocity and long-runout rockslides. The combination of freefall and joints (a rock mass structure) may cause...
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Simulating flow in rock joints using a particulate interface model of a discrete element method
This study proposes a fluid flow algorithm incorporated with the particulate interface model (PIM) to simulate flow in rock joints in the particulate...
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Analytical and numerical analysis for frost heaving stress distribution within rock joints under freezing and thawing cycles
Water-bearing joints within rock engineering in cold areas are often subjected to frost heaving force in cold season due to water–ice phase...
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Investigation on the Working Mechanism and Structural Parameters Optimization of Multiple Ball Shaped Nodular Anchors
We performed a series of small-scale physical modeling tests on two types of multiple ball-shaped nodular underreamed anchors under vertical uplift...
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Numerical modeling and damage evolution research on the effect of joint geometrical parameters in nonpersistent jointed rock masses
The strength and deformation of rock masses containing nonpersistent joints are controlled by the complex interactions of joints and intact rock...
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A numerical study to investigate the influence of surface roughness and boundary condition on the shear behaviour of rock joints
The shear behaviours of rock joints with and without rock bolt support are numerically studied using the discrete element code PFC2D. A cohesive...
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Sensitivity Analysis of Macroscopic Mechanical Behavior to Microscopic Parameters Based on PFC Simulation
PFC is based on discrete element theory and has become essential for simulating rock mechanical behaviour. In PFC, the microscopic mechanical...
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In-plane seismic performance of different infill wall systems in ductile reinforced concrete frames
The seismic response of infilled frames draws considerable interest in the earthquake engineering community for the last decades. Whilst the early...
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Laboratory Tests of Large-Scale Block Models on the Load Transfer and Failure Mechanisms of Rock Masses Subjected to Anchor Loading
This paper presents a laboratory testing rig designed to investigate the failure mechanisms and load transfer of rock masses under rock anchor...
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Experimental study on the failure of fractured rock slopes with anti-dip and strong weathering characteristics under rainfall conditions
Many landslide events occur during or immediately after rainfall, which is one of the main factors that induce slope instability. In this study, a...
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Soft-sediment deformation structures or microbially induced sedimentary structures: the description and possible origin of the "loopites" in the Mesoproterozoic Wumishan Formation, North China
Within the lower Wumishan Formation at the eastern edge of the Tai-hang Mountains in North China, a ~ 10 m stratigraphic interval contains...
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Experimental response of a substandard RC frame building retrofitted with GFRP sheets and slab-weakening subjected to earthquake motions
This paper presents an experimental study on the seismic response of a 2/5 scale, 3-storey, 2-bays non-ductile reinforced concrete frame building...
