In　order　to　facilitate　floor　assembly　and　pipeline　paving,　this　paper　puts　forward　a　new　kind　of　prefabricated　opening-web　steel　channel　beam-column　joint　with　double　flange　cover　plates　(POWSCBCJ)　which　is　based　on　the　design　concept　of　plastic　damage　concentration　and　replaceable　damage　components.　Six　quasi-static　reciprocating　loading　tests　were　carried　out　on　four　joints,　and　the　hysteretic　curves,　skeleton　curves,　slip　curves　and　strain　curves　of　each　specimen　were　obtained.　The　effects　of　thickness　of　flange　cover　plate　(FCP),　the　quantity　of　connecting　bolts　and　the　bolts　spacing　of　FCP　and　other　parameters　on　the　seismic　performance　and　post-earthquake　repairable　performance　of　the　joint　are　mainly　investigated,　and　the　post-earthquake　repairable　function,　and　fatigue　performance　of　the　joint　under　low-cycle　reciprocating　load　are　evaluated.　Experimental　study　shows　that　this　kind　of　joint　has　good　bearing　capacity,　seismic　performance　and　low-cycle　fatigue　performance.　The　joint　can　transfer　the　plastic　hinge　to　the　replaced　FCP　by　strengthening　the　flange　of　the　cantilever　beam　and　weakening　the　FCP,　so　as　to　protect　the　major　components　such　as　beams　and　columns,　and　the　joint　function　can　be　quickly　repaired　by　replacing　the　energy　dissipation　components　after　earthquake;　the　repaired　joint　also　has　good　bearing　capacity　and　seismic　capacity.　Each　design　parameter　has　great　influence　on　the　bearing　capacity　and　energy　dissipation　capacity　of　the　joint.　(C)　2020　Elsevier　Ltd.　All　rights　reserved.