In　order　to　study　the　seismic　performance　of　the　square　steel　tubular　column-to-column　joints　with　a　novel　blind　bolted　connection,　five　specimens　were　designed.　One　specimen　was　tested　under　horizontal　monotonic　loading,　and　its　failure　mode　was　obtained.　The　mechanical　performance　including　joint　bearing　capacity　and　displacement　ductility　coefficient　were　clarified　through　load　versus　displacement　responses.　The　other　four　specimens　with　different　design　parameters　were　tested　under　cyclic　loadings.　Their　bending　moment-rotation　curves,　envelop　curves　and　energy　dissipation　capacities　were　obtained.　In　addition,　the　deconstruction　of　the　joints　after　their　ultimate　limit　states　being　reached　was　validated.　The　finite　element　software　ABAQUS　was　used　to　simulate　the　mechanical　behaviour　of　the　specimens,　and　the　variation　of　the　pretension　within　the　high-strength　bolts　and　of　the　friction　force　at　the　plate　contact　surfaces　during　the　entire　loading　process　were　clarified.　The　results　show　that　the　square　steel　column-to-column　splicing　joint　introduced　herein　is　beneficial　to　simple　configuration,　convenience　in　installation　as　well　as　for　deconstruction,　and　it　possesses　good　slip-critical　bearing　capacity　as　well　as　ultimate　bearing　capacity.　Good　cyclic　behaviour　and　energy　dissipation　capacity　are　also　indicated.　The　research　outcomes　can　provide　an　important　basis　for　the　subsequent　research　and　application　of　deconstructable　steel　structures,　and　for　further　development　of　building　industrialisation.　©　2022　Elsevier　Ltd