Sunhao Zhang
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View article: Shear behavior of bolt–grout interfaces under constant normal stiffness: Influence of grout strength and thickness
Shear behavior of bolt–grout interfaces under constant normal stiffness: Influence of grout strength and thickness Open
The strength and thickness of the grout significantly influence the behavior of the bolt–grout interface (BGI). Understanding how these factors affect load transfer and failure mechanisms is crucial for designing stable and effective rock …
View article: Temperature‐dependent shear behavior and constitutive model of the rock–concrete interface
Temperature‐dependent shear behavior and constitutive model of the rock–concrete interface Open
Shear tests were conducted at a shear rate of 1 mm/min and a shear displacement of 10 mm to investigate the effect of temperature on the shear behavior of the rock–concrete interface, with the aim of revealing the interaction between the s…
View article: Rate-dependent shear behavior of rough joints based on acoustic emission
Rate-dependent shear behavior of rough joints based on acoustic emission Open
View article: Fracture Behavior and Cracking Mechanism of Rock Materials Containing Fissure-Holes Under Brazilian Splitting Tests
Fracture Behavior and Cracking Mechanism of Rock Materials Containing Fissure-Holes Under Brazilian Splitting Tests Open
Fractures and voids are widely distributed in slope rock masses. These defects promote crack initiation and propagation, ultimately leading to rock mass failure. Investigating their damage evolution mechanisms and strength characteristics …
View article: Simulation study on the response characteristics of rock joints to cyclic shear load under constant normal stiffness boundary
Simulation study on the response characteristics of rock joints to cyclic shear load under constant normal stiffness boundary Open
Under cyclic loading, rock joints underwent continuous slipping and closure, resulting in fatigue damage to the joints and thereby affecting the stability of rock engineering projects. To investigate the fatigue shear characteristics of jo…
View article: Fire-induced structural response of shield tunnel segments under different boundary constraints and load levels
Fire-induced structural response of shield tunnel segments under different boundary constraints and load levels Open
View article: Effect of confining pressure on the mechanical properties of heterogeneous rocks under cyclic loading
Effect of confining pressure on the mechanical properties of heterogeneous rocks under cyclic loading Open
To investigate the influence of mesoscopic heterogeneity and confining pressure on the mechanical properties of granite under cyclic loading, a series of biaxial compression tests were conducted on granite samples with different mineral cr…
View article: Investigation on stress distribution and prestress loss model of prestressed anchor cables considering corrosion-induced debonding
Investigation on stress distribution and prestress loss model of prestressed anchor cables considering corrosion-induced debonding Open
Corrosion can significantly impact the safety and stability of the entire structure by reducing the service life and load-bearing capacity of anchors. This study provides an in-depth examination of the effects of corrosion on prestressed a…
View article: Study of Spatial Phase Compensation Performance Based on Photoelectric Saturation Effect in Laser Heterodyne Detection
Study of Spatial Phase Compensation Performance Based on Photoelectric Saturation Effect in Laser Heterodyne Detection Open
View article: Simulation study on the response characteristics of rock joints to cyclic shear load under constant normal stiffness boundary
Simulation study on the response characteristics of rock joints to cyclic shear load under constant normal stiffness boundary Open
Under cyclic loading, rock joints undergo continuous slipping and closure, resulting in fatigue damage to the joints and thereby affecting the stability of rock engineering projects. To investigate the fatigue shear characteristics of join…
View article: A meso‐damage‐based constitutive model for yellow sandstone under dry–wet cycles
A meso‐damage‐based constitutive model for yellow sandstone under dry–wet cycles Open
The mechanical properties of rocks weaken under dry–wet cycles. This weakening may significantly modify the safety reserve of underground caverns or reservoir bank slopes. However, meso‐damage has not been carefully studied based on microm…
View article: Performance Study of Array Detector for Spatial Phase Compensation in Laser Heterodyne Detection
Performance Study of Array Detector for Spatial Phase Compensation in Laser Heterodyne Detection Open
View article: Influence of Normal Stiffness and Shear Rate on the Shear Behaviors and Acoustic Emissions Characteristics of Artificial Rock Joints
Influence of Normal Stiffness and Shear Rate on the Shear Behaviors and Acoustic Emissions Characteristics of Artificial Rock Joints Open
Understanding the asperity damage behaviors of joints during shearing is critical for evaluating the stability of deep underground engineering structures. In this paper, we prepared plaster joints and used them for direct shear tests under…
View article: Research on the Mechanism of the Passive Reinforcement of Structural Surface Shear Strength by Bolts under Structural Surface Dislocation
Research on the Mechanism of the Passive Reinforcement of Structural Surface Shear Strength by Bolts under Structural Surface Dislocation Open
In order to study the local deformation of an anchor bolt and the improvement in the shear strength of a structural surface under the misalignment of an anchorage structure surface, FLAC3D software was used to simulate granite, sandstone, …
View article: Discrete Element Simulation on Macro-Meso Mechanical Characteristics of Natural Gas Hydrate-Bearing Sediments under Shearing
Discrete Element Simulation on Macro-Meso Mechanical Characteristics of Natural Gas Hydrate-Bearing Sediments under Shearing Open
In order to study the macro-meso shear mechanical characteristics of natural gas hydrate-bearing sediments, the direct shear simulations of natural gas hydrate-bearing sediment specimens with different saturations under different normal st…
View article: Discrete Element Simulation of the Macro-Meso Mechanical Behaviors of Gas-Hydrate-Bearing Sediments under Dynamic Loading
Discrete Element Simulation of the Macro-Meso Mechanical Behaviors of Gas-Hydrate-Bearing Sediments under Dynamic Loading Open
Under the action of dynamic loadings such as earthquakes and volcanic activities, the mechanical properties of gas-hydrate-bearing sediments will deteriorate, leading to a decrease in the stability of hydrate reservoirs and even inducing g…
View article: Study on the Effect of Rock Strength on the Macro-Meso Shear Behaviors of Artificial Rock Joints
Study on the Effect of Rock Strength on the Macro-Meso Shear Behaviors of Artificial Rock Joints Open
Understanding the shear properties of joints of rock masses is of great importance for engineering disaster prevention and control. In this paper, a systematic study of the macroscopic shear properties of joints of rock masses with differe…
View article: Characterization of Discontinuity and Mechanical Anisotropy of Shale Based on Continuum Damage Mechanics
Characterization of Discontinuity and Mechanical Anisotropy of Shale Based on Continuum Damage Mechanics Open
The effect of the bedding structure on the mechanical properties of layered shale was studied by means of experiment and numerical simulation. Based on continuum damage theory and discrete fracture network modeling method (D-DFN), a finite…
View article: Experimental Study on Shear Behavior and Failure Mechanism of Bolted Heterogeneous Rock Joints under Different Anchorage Conditions
Experimental Study on Shear Behavior and Failure Mechanism of Bolted Heterogeneous Rock Joints under Different Anchorage Conditions Open
Despite their frequent natural occurrence and engineering encounter, heterogeneous rock joints (rock joints with different lithological characters on both sides of the joint surface) have been studied much less systematically. To study the…
View article: Experimental Study on Shear Behavior and Acoustic Emission Characteristics of Nonpersistent Joints
Experimental Study on Shear Behavior and Acoustic Emission Characteristics of Nonpersistent Joints Open
The shear behavior of rock discontinuities controls the stability of rock masses to a great extent. In this paper, laboratory shear tests were performed on rock-like materials with different cracks to study the effect of nonpersistent join…
View article: Research on the Metasurface for Single-Photon Avalanche Photodiode
Research on the Metasurface for Single-Photon Avalanche Photodiode Open
As the core device of the quantum information field, the single photon avalanche photodiode (SPAD) is a solid-state single photon detector with a pico-second level time-resolution, low bias voltage, high signal-to-noise ratio, and a low co…
View article: Effects of normal stiffness on the shear behaviors and acoustic emissions of rock joints
Effects of normal stiffness on the shear behaviors and acoustic emissions of rock joints Open
In this study, direct shear tests were conducted on plaster joints under various boundary conditions. During shearing, the acoustic emission (AE) was measured by the PAC AE system. The damage of the asperities was evaluated based on the AE…
View article: Discrete element numerical simulation of mechanical properties of methane hydrate-bearing specimen considering deposit angles
Discrete element numerical simulation of mechanical properties of methane hydrate-bearing specimen considering deposit angles Open