True‐triaxial deformation, cracking and strength failure characteristics of chemically corroded flawed sandstone

Investigation of Compressive–Shear Fracture in Rock Considering Flaw Distribution and Interaction via an Improved Energy-Stress-Based Peridynamics Model

Predicting compressive–shear fracture in rock masses containing complex flaw distributions remains a major challenge in rock engineering. We propose an improved non-ordinary state-based peridynamics (NOSB-PD) model to simulate rock fracture behavior in this work. A stabilized NOSB-PD formulation is developed by incorpo...

Experimental and Numerical Studies on Dynamic Response and Fracture Characteristic of Sandstone with Multiple Defects

Geological discontinuities (e.g., cracks, joints, faults, and cavities) fundamentally alter the integrity and mechanical behavior of rock masses. Under dynamic loading, such discontinuities induce stress concentration, disturb stress-wave propagation, and govern crack evolution, thereby acting as critical triggers fo...

Fracture behavior and constitutive modeling of rock-concrete contact surfaces with different roughness under freeze–thaw cycles

Deformation and Failure Characteristics of Three Sandstone Types Under True Triaxial Stress With a Fixed Lateral Stress Difference

This study conducts true triaxial compression tests on three types of sandstone under a constant intermediate principal stress of σ 2  = 28 MPa. The stresses applied to the X ‐direction surfaces are progressively increased while their difference remains fixed at Δ σ  = 3 MPa. Strength, deformation, failure m...

Study on creep deformation behavior and constitutive model of filled fractured sandstone under freeze-thaw cycles

The time-dependent deformation and stability of fractured rock in seasonally frozen regions constitute a key scientific issue for engineering safety. To investigate the long-term deformation of fractured rock under the coupling of freeze-thaw (F-T) cycles and sustained loading, this study systematically examined the ef...

Mechanical behavior and multiscale damage evolution of filled fractured sandstone under freeze–thaw cycles

To address the deterioration of rock engineering stability in seasonally frozen regions, this study investigated the mechanical response and damage evolution of sandstone subjected to the coupled effects of freeze-thaw (F-T) cycles and filled fractures. Uniaxial compression tests were performed on intact specimens and...