This　study　investigates　the　bonding　performance　of　Grouted　Corrugated　Duct　(GCD)　connections　through　dynamic　tensile　tests　at　varying　strain　rates　(10-3,　10-1,　100,　101　s-1).　Steel　bars　with　anchorage　lengths　of　5D,　6D,　7D,　8D,　10D,　and　15D　(where　D　represents　the　bar　diameter)　were　tested.　The　observed　failure　modes　include　rebar　fracture,　steel　bar　pull-out　failure,　and　combined　pull-out　failure　of　both　the　steel　bar　and　corrugated　duct.　From　the　experimental　results,　dynamic　stress-strain　curves　and　dynamic　bond　strengths　were　derived.　An　analytical　model　was　developed　to　predict　the　dynamic　bond-slip　behavior　of　the　GCD　connections.　The　model　exhibited　a　fitting　goodness　index　(R2)　exceeding　0.88　for　slip　failure　and　0.9　for　fracture　failure,　demonstrating　its　satisfactory　accuracy.　Using　this　model,　critical　dynamic　anchorage　lengths　under　various　strain　rates　were　calculated,　and　an　empirical　model　for　predicting　the　critical　dynamic　anchorage　length　was　also　developed.　The　experimental　results　indicate　a　strong　correlation　between　the　ultimate　fracture　failure　load　and　the　strain　rate.　The　average　ultimate　load　increased　from　51.83　kN　to　63.95　kN　as　the　strain　rate　increased　from　0.001　s-1-10　s-1,　corresponding　to　a　23.38　%　increase.　However,　no　significant　correlation　was　observed　between　the　maximum　slip　displacement　and　the　strain　rate.　The　critical　dynamic　anchorage　length　increased　from　8.26D　to　9.52D　as　the　strain　rate　increased　from　0.001　s-1-10　s-1,　indicating　a　15.34　%　increase.