In　order　to　improve　the　seismic　performance　of　a　continuous　bridge,　we　propose　to　install　self-centering　functional　separation　bearings　(Sc-FSB)　between　the　fixed　pier　and　the　girder　in　the　bridge.　Following　the　design　idea　of　separating　functionalities,　the　Sc-FSB　device　is　primarily　composed　of　a　sliding　bearing　to　bear　vertical　load,　a　friction　cable　to　carry　horizontal　seismic　force　and　dissipate　the　seismic　energy　input　into　the　superstructure,　and　self-centering　springs　to　achieve　post-earthquake　self-centering　effects.　In　this　study,　the　Sc-FSB　device＇s　hysteretic　model　is　established,　and　its　theoretical　formula　is　deduced.　The　quasi-static　cyclic　tests　of　10　Sc-FSB　device　specimens　were　performed　to　verify　their　promising　mechanical　performances,　in　which　we　consider　parameters　of　two　friction　cables　with　different　diameters　and　three　self-centering　springs　with　different　stiffnesses.　The　results　show　that　the　Sc-FSB　device　holds　excellent　characteristics　of　a　typical　friction　damper,　such　as　relatively　stable　outputs,　good　energy　dissipation　and　deformation　capacity　under　all　working　conditions,　and　its　fatigue　performance　meets　the　requirements　of　typical　specifications.　In　addition,　several　unique　features　of　the　Sc-FSB　are　identified　as　follows.　The　maximum　damping　force　is　independent　of　the　loading　frequency,　and　it　increases　with　the　displacement　amplitude.　The　damping　force　is　significantly　affected　by　the　pre-tension　force　of　the　friction　cable　and　the　number　of　winding　coils,　and　as　a　result,　the　energy　dissipation　performance　is　promising.　The　stiffness　and　pre-tension　force　of　the　self-centering　spring　significantly　improve　the　self-centering　ability　of　the　Sc-FSB　device.　The　design　of　friction　cable　and　self-centering　spring　effectively　separates　the　functions　of　bearings.　This　study　can　serve　as　a　foundation　for　the　further　study　of　Sc-FSB　device　and　as　a　reference　for　the　research　of　other　similar　friction　dampers.　©　2023