The　pseudo-static　tests　on　full-scale　models　of　dovetail　joints　of　Min-Zhe　woven　timber　arch　bridges　were　conducted,　the　similarities　and　differences　in　the　force　mechanisms　of　dovetail　joints　between　Min-Zhe　woven　timber　arch　bridges　and　ancient　timber　buildings　were　analyzed,　and　the　applicability　of　the　dovetail　joint　mechanical　model　in　dovetail　joints　of　Min-Zhc　woven　timber　arch　bridges　was　explored.　According　to　the　mechanical　equilibrium　and　deformation　coordination,　the　bending　moment-rotation　mechanical　model　and　calculation　formulas　of　dovetail　joints　of　Min-Zhe　woven　timber　arch　bridges　were　proposed　considering　the　tenon　pull-out　distance　and　mortise　gap　of　joints.　Through　the　test　data　and　finite　element　analysis,　the　mechanical　model　and　stiffness　of　dovetail　joints　of　Min-Zhc　woven　timber　arch　bridges　were　verified.　The　effect　of　rotation　and　loading　trips　on　the　tenon　pull-out　distance　and　that　of　the　mortise　gap　and　axial　force　on　the　stiffness　of　dovetail　joints　were　revealed.　Research　results　show　that　the　hysteresis　energy　dissipation　of　the　dovetail　joints　of　Min-Zhe　woven　timber　arch　bridges　increases　with　the　increase　in　the　axial　force　in　clastic　stage.　When　the　rotation　is　greater　than　0.　04　rad,　the　component　enters　the　yield　phase,　and　extrusion　deformation　cannot　recover.　When　the　rotation　reaches　0.　06　rad,　the　slope　of　the　hysteresis　curve　stops　growing.　The　dovetail　joints　are　not　damaged　after　loading.　Due　to　the　different　force　mechanisms　of　dovetail　joints　between　Min-Zhe　woven　timber　arch　bridges　and　ancient　timber　buildings,　the　dovetail　joint　mechanical　model　of　ancient　timber　buildings　is　not　suitable　for　dovetail　joints　of　Min-Zhe　woven　timber　arch　bridges.　The　error　of　bending　moment-rotation　of　dovetail　joints　of　Min-Zhe　woven　timber　arch　bridges　between　the　finite　element　value　and　test　value　is　only　3.　2%,　and　the　errors　of　positive　and　negative　clastic　maximum　bending　moments　between　finite　element　values　and　test　values　are　16.7%　and　-　5.　2　%,　respectively,　indicating　that　the　established　bending　moment-rotation　mechanical　model　can　accurately　reflect　the　bending　moment-rotation　change　law　of　joints　during　rotation.　The　tenon　pull-out　distance　is　influenced　by　the　rotation　in　elastic　phase　and　by　the　loading　control　displacement　and　loading　stages　in　elastoplastic　phase.　The　joint　stiffness　increases　from　29.　46　kN　•　m　•　rad-　1　to　52.　24　kN　•　m　•　rad-　1　when　the　mortise　gap　reduces　from　0.　06　mm　to　0.　01　mm,　indicating　that　the　stiffness　of　dovetail　joints　increases　with　the　decrease　in　the　mortise　gap.　In　summary,　the　proposed　mechanical　model　can　provide　a　reference　for　protection,　repair,　and　research　on　the　seismic　performance　of　existing　Min-Zhc　woven　timber　arch　bridges.　5　tabs,　28　figs,　30　refs.　©　2024　Chang＇an　University.　All　rights　reserved.