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Author

Shu-Qi Ma

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Sep 2026

Cusp-Catastrophe-Based Evaluation of Critical Rockbolt–Grout Interface Debonding Displacement in Fully Grouted Rockbolts under Pull-Out Loading

For a fully grouted rockbolt (FGR) subjected to pull-out loading, local instability may occur at the rockbolt–grout (R-G) interface when the surrounding medium is sufficiently stiff and the bolt–grout bond governs load transfer. This study derives a theoretical estimate for the shear displacement at which local R-G i...

Jia-Zheng Chen, Shu-Qi Ma · 0 citations
Aug 2026

Analytical modeling of mechanical response and ultimate failure of a grouted rockbolt with a single corrosion pit

A single corrosion pit in a grouted rockbolt should be mechanically interpreted as a localized weakened segment, because it introduces a discontinuity in axial stiffness, disturbs the dominant load-transfer zone near the loaded end, and complicates the ultimate failure behavior of the anchorage system. To clarify this...

Xiang Xu, Shu-Qi Ma, Jia-Zheng Chen et al. · 0 citations

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