Connections　using　grouted　sleeves　remain　a　popular　option　for　precast　elements　because　of　their　relative　ease　of　construction,　but　existing　knowledge　about　the　seismic　performance　of　such　connections　is　incomplete　and　poorly　understood.　In　particular,　the　effects　of　the　grouted　splices　are　intensively　studied　in　this　paper.　The　main　objectives　of　this　study　are　to　examine　the　influence　of　axial　compression　ratio　on　the　strain　distribution　and　shearing　deformation　in　the　plastic　hinge　zones　based　on　full-scale　experimental　results,　as　well　as　to　discover　the　flexural　strengths　of　local　grouted　sleeve　and　normal　cross-section　and　evaluate　the　deformation　of　precast　columns　based　on　modified　plastic　hinge　models.　Analysis　results　demonstrated　the　following:　(1)　strain　and　shearing　deformation　exhibited　that　the　grouted　sleeve　has　good　connection　performance,　but　the　existing　grouted　sleeve　was　of　crucial　importance　for　shearing　deformation　of　precast　column;　(2)　flexural　strength　of　the　grouted　sleeve　cross-section　was　higher　than　that　of　the　normal　cross-section,　which　expressed　that　the　compressive　strength　of　a　grouted　sleeve　in　the　cross-section　should　be　considered;　(3)　a　simplified　analysis　model　based　on　modified　plastic　hinge　length　was　presented　to　evaluate　the　deformation　capacity　of　a　precast　column　connected　by　a　grouted　sleeve,　and　the　decreasing　trend　of　displacement　ductility　compared　favorably　with　experimental　values,　but　the　calculated　ductility　coefficient　expressed　smaller　results　when　the　axial　compressive　ratio　was　0.5　and　0.85.