To　explore　the　dynamic　response　characteristics　and　failure　modes　of　sticky　steel-reinforced　segment　joints　under　cyclic　loading,　a　refined　finite　element　analysis　model　for　such　joints　is　developed　against　the　backdrop　of　a　practical　urban　shield　tunnel.　This　study　involves　simulating　the　dynamic　characteristics　of　sticky　steel-reinforced　segment　joints　under　positive　bending　moments　during　cyclic　loading,　and　exploring　damage　evolution　features,　failure　modes,　stiffness　degradation,　hysteresis　energy　dissipation　characteristics,　and　ductility　deformation　capabilities.　Results　show　that　during　the　initial　loading　stage,　the　steel　plates　of　the　reinforced　joint　can　effectively　share　the　tension　borne　by　the　bolts,　with　the　initial　failure　occurring　at　the　bond　between　the　steel　plates.　Once　extensive　delamination　of　the　steel　plates　occurs,　the　failure　process　of　the　reinforced　and　unreinforced　joints　tends　to　be　consistent.　During　the　initial　loading　stage,　the　reinforced　steel　plates　significantly　enhance　the　stiffness　and　bending　moment　of　the　segment　joint.　Even　after　extensive　delamination　of　the　steel　plates,　the　bending　moment　and　stiffness　of　the　reinforced　joint　remain　slightly　higher　than　those　of　the　unreinforced　joint.　Under　positive　bending　moment　cyclic　loading,　the　segment　joint　exhibits　cumulative　damage　characteristics:　with　an　increase　in　the　number　of　cycles　under　the　same　load　level,　the　joint　demonstrates　a　certain　degree　of　load-carrying　capacity　degradation.　In　the　initial　loading　stage,　due　to　the　cracking　failure　of　the　structural　adhesive,　the　energy　dissipation　capacity　of　the　reinforced　joint　is　noticeably　higher　than　that　of　the　unreinforced　joint.　During　the　later　loading　stages,　the　energy　dissipation　capacity　of　both　reinforced　and　unreinforced　joints　increases　with　the　increase　in　the　degree　of　concrete　damage,　however,　the　energy　dissipation　capacity　of　reinforced　joints　is　still　slightly　stronger　than　that　of　unreinforced　pipe　sheet　joints.　©　2024　Beijing　University　of　Technology.　All　rights　reserved.