Simulation study of the rupture mechanism of through-cracking under freeze–thaw load coupling effect

Ying Xu (), Zhongwen Wang, Meilu Yu, Haotian Xie, Yanghaonan Jiao, Qi An and Chengjie Li
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Ying Xu: Anhui University of Science and Technology
Zhongwen Wang: Anhui University of Science and Technology
Meilu Yu: Anhui University of Science and Technology
Haotian Xie: Anhui University of Science and Technology
Yanghaonan Jiao: Anhui University of Science and Technology
Qi An: Anhui University of Science and Technology
Chengjie Li: Anhui University of Science and Technology

Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, 2024, vol. 120, issue 11, No 18, 9809-9831

Abstract: Abstract Based on the uniaxial compression test, this study examined the effect of the dip angle of the rock formation on crack initiation, propagation, and penetration failure mechanism under the combined effects of freeze–thaw and load, utilizing the discrete element programmed. The results show that: The fracture area of fractured rock mass is mainly caused by fatigue damage caused by stress concentration at the end of fracture. The crack propagation path at the crack tip may be deflected due to the influence of freeze–thaw cycles. With the increase of the dip angle of the rock bridge, the failure mechanism of the rock sample gradually evolved from a single tension failure to a mixed tension-shear failure, and the fractal dimension of the crack increased first and then decreased. When the dip angle of the rock bridge is α

Keywords: Freeze–thaw cycle; Deterioration effects; Numerical simulation; Crack extension (search for similar items in EconPapers)
Date: 2024
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DOI: 10.1007/s11069-024-06587-0

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