To　evaluate　the　seismic　performance　of　concrete　columns　reinforced　with　GFRP　bars,　the　reversed　cyclic　loading　tests　for　5　concrete　columns　reinforced　with　longitudinal　and　transverse　GFRP　(Glass　Fiber　Reinforced　Polymer)　bars　and　1　concrete　column　reinforced　with　longitudinal　steel　bars　and　transverse　GFRP　bars　were　conducted.　The　influence　of　the　volumetric　ratio　of　hoop　and　the　level　of　axial　compression　on　the　seismic　behavior　of　concrete　columns　reinforced　with　GFRP　bars　was　discussed.　The　characteristics,　including　failure　patterns,　hysteretic　curves,　the　ductility,　the　dissipated　energy,　the　strength　degeneration　and　the　stiffness　degeneration　were　investigated.　The　two　evaluation　methods　of　traditional　ductility　coefficient　and　integrated　performance　index　were　adopted　to　evaluate　and　compare　the　seismic　behaviors　of　concrete　columns　reinforced　with　GFRP　bars.　The　trial　value　of　the　flexural　capacity　were　compared　with　calculated　values　in　CAN/CSA-S806-12,　ACI　440.1R-15　and　GB　50608-2010　codes.　The　calculation　method　of　theoretical　skeleton　curve　for　FRP　reinforced　concrete　columns　was　proposed　based　on　the　existing　experimental　researches　and　experimental　results　of　this　paper.　The　results　show　that　the　failure　of　concrete　columns　reinforced　with　GFRP　bars　is　caused　by　the　concrete　crushing　and　the　fracture　of　longitudinal　GFRP　bars.　The　failure　of　hybrid　reinforced　concrete　columns　results　from　the　concrete　crushing　and　the　yield　of　longitudinal　steel　bars.　There　is　no　damage　of　GFRP　stirrups　of　all　specimens,　and　GFRP　stirrups　can　provide　effective　lateral　restraint　for　the　concrete　columns　during　the　test.　The　rheostriction　of　hysteretic　curves　of　GFRP　reinforced　concrete　columns　is　evident.　The　energy　dissipation　capacity　of　GFRP　reinforced　concrete　columns　is　slightly　lower　than　that　of　hybrid　reinforced　concrete　columns.　There　are　some　limits　of　the　evaluation　of　the　seismic　performance　of　GFRP　reinforced　concrete　columns　by　dint　of　the　traditional　ductility　coefficient　method.　The　integrated　performance　index　can　reflect　the　high　level　of　bearing　capacity　and　deformability　comprehensively.　The　integrated　performance　index　increases　with　the　increasing　volumetric　ratio　of　hoop　and　the　decreasing　level　of　axial　compression.　The　calculation　results　of　flexural　capacity　of　three　codes　are　smaller　than　trial　values,　whilst　the　results　of　ACI　440.1R-15　code　for　calculating　the　flexural　strength　of　GFRP　reinforced　concrete　columns　have　a　rather　sufficient　safety　reserve.　The　theoretical　skeleton　curves　predicted　by　the　proposed　calculation　method　coincide　relatively　well　with　the　experimental　results.　©　2017,　Editorial　Department　of　China　Journal　of　Highway　and　Transport.　All　right　reserved.