In　order　to　explore　the　reinforcement　effect　and　working　mechanism　of　spliced　wood　columns　strengthened　by　fiber　reinforced　polymer,　the　axial　compression　tests　of　10　reinforced　wood　columns　were　carried　out　considering　the　influence　of　different　fiber　sheets　and　splicing　methods.　The　failure　modes　and　axial　compressive　properties　of　reinforced　columns　under　three　kinds　of　FRP　sheets　(AFRP,　BFRP,　CFRP)　and　four　kinds　of　splicing　methods　(tenon　joint,　keban　tenon　joint,　mortise　joint,　straight　tenon　joint)　weree　compared　and　analyzed.　The　results　indicated　that　the　traditional　pier　jointed　columns　without　FRP　reinforcement　show　the　cracking　of　jointed　timber　and　local　buckling　fracture　after　cracking.　However,　after　FRP　reinforcement,　the　integrity　of　the　pier　joint　area　is　good,　while　the　failure　mainly　occurred　at　the　interface　between　the　upper　and　lower　piers,　which　was　manifested　as　wood　crushing　and　fiber　cloth　folding.　The　bearing　capacity　and　stiffness　of　unconstrained　pier　joints　were　only　recovered　to　42%-69%　and　43%-65%　respectively.　After　the　FRP　reinforced　pier　was　connected　to　the　wooden　column,　the　axial　compression　capacity　can　be　restored　to　75%-100%　of　the　intact　wooden　column,　the　stiffness　can　be　restored　to　66%-107%,　the　ductility　can　be　improved　by　24%-96%,　and　the　axial　compression　bearing　capacity　and　deformation　capacity　of　the　wooden　column　can　be　effectively　restored　or　improved.　In　addition,　the　stiffness　degradation　was　not　obvious.　The　load　displacement　curves　and　mechanical　properties　obtained　by　simulation　were　in　good　agreement　with　the　experimental　results.　In　conclusion,　the　spliced　timber　columns　reinforced　by　FRP　sheets　had　good　mechanical　properties,　which　can　provide　reference　for　the　repair　of　traditional　timber　structures　and　the　splicing　of　wooden　columns.　©　2024　Harbin　Institute　of　Technology.　All　rights　reserved.