The　application　of　structured　rubberized　concrete　offers　an　effective　solution　for　recycling　rubber　tires.　This　paper　proposes　a　novel　GFRP-rubberized　concrete-steel　hybrid　solid　columns　(GRSRC),　which　combines　rubberized　concrete　with　circular　FRP-concrete-steel　double-skin　tubular　columns　(DSTCs).　Quasi-static　tests　were　carried　out　on　7　GRSRC　specimens　to　investigate　the　influence　of　rubber　contents,　steel　tube　diameters,　and　axial　load　ratios　on　their　seismic　performance.　The　test　results　indicate　that　the　GRSRC　has　excellent　ductility,　lateral　displacement　capacity,　and　energy　dissipation　capacity.　The　GRSRC　exhibits　slow　strength　degradation　at　large　lateral　displacements　due　to　the　double-tube　confinement　effect.　Using　rubberized　concrete　with　a　rubber　content　of　20%　as　a　replacement　for　ordinary　concrete　has　little　impact　on　the　seismic　performance　of　the　specimens.　When　the　rubber　content　reaches　40%,　the　seismic　performance　decreases　significantly.　Furthermore,　its　lateral　load-bearing　capacity,　energy　dissipation　capacity,　and　deformation　capacity　are　also　reduced　with　the　decreasing　diameter　of　the　steel　tube,　resulting　in　brittle　damage.　Increasing　the　axial　load　ratio　enhances　the　stiffness,　lateral　load-bearing　capacity,　and　energy　dissipation　capacity　but　may　reduce　ductility,　deformation　capacity,　and　hysteretic　performance.　Finally,　a　simplified　model　of　GRSRC　restoring　force　is　established　and　validated,　providing　a　theoretical　basis　for　practical　engineering　applications.