FRP　(fiber　reinforced　polymer)　bars　have　the　potential　to　become　an　alternative　due　to　their　excellent　performance.　A　3D　numerical　model　considering　the　effects　of　strain　rates　and　high-temperatures　on　material　properties　was　established　to　investigate　the　bond　behavior　between　deformed　BFRP　bars　and　concrete　under　the　coupled　action　of　dynamic　loadings　and　elevated　temperatures.　In　the　model,　the　surface　feature　of　BFRP　bars　was　explicitly　simulated.　The　model＇s　validity　was　verified　by　comparing　the　simulation　results　with　the　experimental　records.　It　was　found　that　the　numerical　model　can　characterize　the　bond　behavior　of　specimens　reinforced　with　BFRP　bars,　including　the　cracking　propagation,　the　failure　patterns,　and　the　bond　stress-slip　curves.　The　failure　mechanism　for　specimens　experiencing　the　dynamic　loading　and　high-temperatures　was　revealed　by　analyzing　the　strain　distributions　of　the　concrete　and　BFRP　bars,　which　indicate　that　the　difference　in　the　mechanical　properties　of　the　concrete　and　BFRP　bars　subjected　to　high-temperatures　and　dynamic　loadings　ultimately　lead　to　the　discrepancies　in　failure　modes.　The　bond　strength　increases　nonlinearly　with　the　increases　in　strain　rate　at　various　temperatures　while　decreasing　linearly　at　a　higher　temperature,　regardless　of　strain　rate.　The　peak　slip　increases　linearly　with　the　increases　in　strain　rate　or　temperature.　The　overall　bond　performance　of　specimens　is　worse　under　high　temperatures　than　after　natural　cooling.　The　strengthening　influence　of　strain　rate　on　the　bond　performance　of　specimens　attenuates　at　high　temperatures,　and　the　weakening　influence　of　temperature　is　enhanced.　Based　on　the　numerical　results　and　mBPE　model　at　ambient　temperature,　a　semi-empirical　model　was　developed　by　comprehensively　considering　the　enhancement　of　strain　rate　and　temperature　degradation　on　bond　performance.　The　validity　of　the　semi-empirical　model　was　verified　by　comparing　the　prediction　results　with　the　simulation　and　test　results.　©　2023　Elsevier　Ltd