A nonlinear constitutive model for fine sandstone considering freeze–thaw induced compaction and damage evolution

A Freeze-thaw damage model for rock based on equivalent pore structure

A Unified Damage–Plasticity Constitutive Framework for Freeze–Thaw-Damaged Concrete Under Monotonic and Cyclic Compression

To provide a unified description of the monotonic and cyclic compressive responses of concrete after freeze–thaw exposure, a one-dimensional phenomenological damage–plasticity constitutive framework is proposed. Freeze–thaw-induced pre-damage is quantified by the degradation of the initial static stiffness. A Mander-ty...

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...

Analysis of Uniaxial Fatigue Mechanical Properties and Constitutive Modeling for Freeze–Thaw Cycled Red Sandstone with Double Fissures

This study addresses the challenge of the mechanical behavior of fractured rock masses in cold regions under freeze–thaw-fatigue coupling. Uniaxial step-incremental cyclic loading tests were conducted on double-cracked red sandstone subjected to different numbers of freeze–thaw cycles to reveal the damage evolution law...

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...

Research on the Macro‐Micro Energy Evolution Law and Segmented Damage Constitutive Model of Sandstone Under Dry‐Wet Cycles

The periodic fluctuation of reservoir water levels induces dry‐wet cycles, deteriorating sandy rock slope stability and potentially triggering collapses. This study investigates the degradation mechanism of Three Gorges Reservoir fine sandstone through uniaxial compression tests and PFC2D simulations under varying dry‐...