Since 1963
ARTICLE
Hydromechanical degradation and fatigue-like damage mechanism of saturated red sandstone subjected to cyclic pore-water pressure
1
China Anergy Group Third Engineering Bureau Co. Ltd., Chengdu, China
2
School of Civil and Hydraulic Engineering, Chongqing University of Science and Technology, Chongqing, China
Submission date: 2026-03-05
Final revision date: 2026-06-05
Acceptance date: 2026-06-26
Online publication date: 2026-08-22
Publication date: 2026-09-10
Corresponding author
Junzhe XU
School of Civil and Hydraulic Engineering, Chongqing University of Science and Technology, China
School of Civil and Hydraulic Engineering, Chongqing University of Science and Technology, China
Journal of Theoretical and Applied Mechanics 2026;64(3):217-229
KEYWORDS
saturated red sandstonecyclic pore-water pressurehydromechanical couplingfatigue-like damageenergy dissipation
TOPICS
ABSTRACT
Triaxial tests under 2MPa confinement investigated saturated red sandstone degradation under cyclic pore-water pressure. A 0.3MPa cyclic pressure reduces peak strength by 18.3 %. Deformation remains stable below 70% of peak strength. Conversely, unstable fatigue damage accelerates post-eight cycles at 80% stress. These results elucidate hydromechanical fatigue mechanisms, improving reservoir slope stability evaluations.
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