This　study　proposes　a　numerical　modeling　method　based　on　the　cohesive　zone　model　to　investigate　the　mechanical　response　and　fracture　mechanism　of　steel　fiber　reinforced　concrete　(SFRC)　structures.　In　the　proposed　model,　cohesive　elements　are　used　to　stimulate　potential　fracture　surfaces　and　rebar-concrete　interfaces.　A　constitutive　model　for　SFRC　fracture　surfaces　is　developed　by　considering　mixed-mode　damage　evolution,　interfacial　friction,　and　the　fiber　bridging　effect.　Additionally,　a　modified　bond-slip　constitutive　model　for　the　rebar-concrete　interface　is　proposed,　accounting　for　normal　separation.　To　validate　the　proposed　model,　a　series　of　four-point　bending　experiments　on　SFRC　specimens　are　conducted.　The　simulation　results　closely　align　with　experimental　observation,　confirming　the　model’s　ability　to　accurately　capture　both　mechanical　response　and　fracture　behavior.　Parametric　analysis　reveals　that　inadequate　fiber　content　or　improper　friction　coefficients　significantly　reduce　structural　bearing　capacity　and　ductility.　©　2025　Chongqing　University.　All　rights　reserved.