GAS TURBINE USING SUPERCRITICAL CO2

A combustor structure 1 of an embodiment is disposed to penetrate, from a direction perpendicular to an axial direction of a turbine rotor 97 in a suprecritical CO gas turbine which uses supercritical CO for a working fluid, a casing of the suprecritical CO gas turbine. The combustor structure 1 includes a plurality of combustors 50. Each of the combustors 50 includes: a combustor liner 51 in a cylindrical shape, which combusts fuel and an oxidant; a fuel supply part 52 which is provided at an upstream end of the combustor liner 51 and supplies the fuel into the combustor liner; and an oxidant supply part 53 which is provided at the upstream end of the combustor liner 51 and supplies the oxidant into the combustor liner.