A gas turbine combustor and gas turbine provided Selbiger

A gas turbine combustor comprising a plurality of cooling air ducts (27A) flows through the ventilated air under pressure from downstream of a combustion gas flow in the upstream direction, wherein the plurality of cooling air ducts (27A) on a wall portion (26) arranged side by side and in a flow direction of a combustion gas are aligned; wherein the plurality of cooling air ducts (27A) through a channel transition groove portion (33) in upstream cooling air ducts (27A1) which are arranged closer to the inlet openings of the deaerated pressurized air (30a), and in downstream cooling air ducts (27A2) that is closer to outlet ports are the deaerated pressurized air (30b) are disposed, divided and center lines (C