A　bolted　beam-to-column　connection　with　rib-stiffened　splicing　plates　is　presented　to　facilitate　on-site　assembly　and　enhance　the　stiffness　of　joints.　The　joints　consist　of　three　modules　and　are　assembled　using　bolts　on　site.　Cyclic　tests　and　a　finite　element　analysis　(FEA)　are　performed　on　seven　full-scale　joints.　The　influence　of　the　trapezoidal　stiffener＇s　size,　end-plate　connection　type,　and　the　number　of　bolts　on　the　seismic　performance　of　the　joints　is　investigated.　The　seismic　performance　of　the　bolted　joints　is　compared　with　that　of　a　welded　joint.　The　failure　mode,　hysteretic　curve,　energy　dissipation　capacity,　ductility,　rotation　capacity,　bolt　tension,　friction,　strength,　and　stiffness　of　the　joints　are　determined　via　the　tests　and　FEA.　The　trapezoidal　stiffener　significantly　improves　the　bearing　capacity,　stiffness,　and　energy-dissipation　capacity　of　the　joints,　making　the　plastic　hinge　occur　on　the　beam　flange　outside　the　splicing　zone.　It　is　preferable　to　move　the　web　bolts　to　the　beam　flange　for　improved　seismic　performance.　The　bolts　on　the　four　corners　of　the　column　flange　have　little　effect　on　the　seismic　performance;　thus,　the　bolts　can　be　eliminated　and　the　flange　can　be　substituted　by　four　small　plates　to　reduce　cost.　This　reasonable　design　could　prevent　the　slipping　of　the　joint　during　small-magnitude　earthquakes,　facilitate　energy　dissipation　via　slip　during　medium-magnitude　earthquakes,　and　facilitate　energy　dissipation　via　the　slip　and　plastic　deformation　of　the　beams　during　large-magnitude　earthquakes.　The　formula　for　the　ultimate　load　is　presented,　and　the　corresponding　calculation　results　agree　well　with　the　test　results.　(C)　2020　Elsevier　Ltd.　All　rights　reserved.