Gas Turbine Combustor and Gas Turbine

A gas turbine combustor that receives compressed air discharged from a compressor, mixes the compressed air with a fuel, burns a mixture of the compressed air and the fuel to generate a combustion gas, and supplies the generated combustion gas to a turbine, the gas turbine combustor comprising:

• an inner cylinder configured to form a combustion chamber therein;
• an outer cylinder configured to cover the inner cylinder and form a cylindrical outer circumferential flow path between the outer cylinder and the inner cylinder to allow the compressed air to flow;
• and
• a burner that is mounted on an end of the outer cylinder, the end being positioned on an opposite side to a side where the turbine is located, and that faces the combustion chamber, wherein
• the burner includes a base frame and a plurality of fuel nozzles, the base frame having a cylindrical shape and including a cavity configured to distribute the fuel, the fuel nozzles being circularly arranged as viewed from the combustion chamber and connected to the cavity, and
• when viewed from the combustion chamber, a plurality of slits extending radially are formed in the base frame such that each separate the circumferentially adjacent fuel nozzles from each other.