<p>To address the engineering failure of rockbolt grouted structures caused by the combined effects of corrosion and dynamic disturbances in deep underground projects, first, accelerated corrosion tests under varying temperatures were conducted to investigate the degradation mechanisms of grouted structures. Dynamic pull-out tests were then performed to evaluate the strain-rate-dependent bond behavior and corresponding failure modes. Second, numerical simulations were used to study the damage evolution characteristics of grouted structures under high strain rates. A bond–slip model of rockbolt considering the combined effects of strain rate and corrosion was subsequently established to reveal the load transfer mechanism of corroded rockbolts under different strain rates. The results demonstrate that the stiffness of the bond interface increases under dynamic loading, leading to structural damage that becomes more pronounced with increasing loading rates. When the strain rate increased from 3.3 × 10^–4&#xa0;s⁻¹ to 200&#xa0;s⁻¹, the bond strength of the rockbolts increased 3.81-fold, indicating a significant strain rate effect. Increasing corrosion temperatures accelerated the ion diffusion rates on rockbolt surfaces, resulting in higher corrosion current densities; this intensifies the degree of corrosion of rockbolts and ultimately leads to reduced bond strength. Under high strain rates, corrosion significantly deteriorates grouted structures. Upon failure of the grouted structures, interfacial cracks progressively coalesce at the bonding interface, accompanied by dense radial and secondary cracking. The bond–slip model for rock bolts accurately characterizes the degradation mechanisms under the combined effects of strain rate and corrosion, while also demonstrating an increase in load transfer efficiency with increasing strain rate.</p>