Concrete　structures　reinforced　with　fiber-reinforced　polymer　(FRP)　bars　(referred　to　as　FRP-RC　structures)　are　becoming　increasingly　popular,　whereas　there　is　a　lack　of　a　robust　full-range　axial　load-strain　model　for　FRP-RC　columns,　which　is　fundamental　for　the　design　and　advanced　analysis　of　FRP-RC　structures.　To　this　end,　a　review　and　assessment　of　existing　confined　compressive　concrete　ultimate　axial　stress　(or　strain)　models　(including　models　for　glass　FRP　(GFRP)　spiral-confined　concrete　(GFSCC)　and　models　for　FRP　partially　confined　concrete　(FPCC))　against　a　newly　established　database　are　reported　in　this　paper.　The　comparisons　show　that　the　models　of　FPCC　are　applicable　to　GFSCC.　A　new　design-oriented　full-range　axial　load-strain　model　is　then　proposed　for　GFRP-RC　columns　of　circular　cross-section　by　explicitly　considering　the　behavior　of　three　key　components　in　FRP-RC　columns,　namely,　confined　concrete　core,　FRP　longitudinal　reinforcement　and　concrete　cover.　The　novelty　of　the　proposed　model　is　that　the　constitutive　models　of　the　three　components　in　FRP-RC　columns　can　be　considered　in　separation.　The　proposed　model,　which　is　able　to　capture　the　strain　softening　behavior　properly,　provides　satisfactory　predictions　of　the　axial　load-strain　test　curves　of　FRP-RC　columns.