GAS TURBINE COMBUSTOR

Provided is a gas turbine combustor having improved maintainability obtained by facilitating the mounting and removal of a base plate for supporting main burners and a pilot burner. A gas turbine combustor is provided with: a pilot burner (13) disposed at the center of a combustor inner tube (11) ; main burners (14) provided on the outside of the pilot burner (13) in the radial direction so as to be arranged in the circumferential direction of the inner peripheral surface (11a) of the combustor inner tube (11); a circular disc-shaped base plate (15) disposed within the combustor inner tube (11) and supporting both the pilot burner (13) and the main burners (14); and an engagement section (41A, 41B, 42b, 43b, 44) protruding from the inner peripheral surface (11a) toward the inside thereof in the radial direction and engaging with the base plate and (15) . The base plate (15), and the engagement section (41A, 41B, 42b, 43b, 44) or the inner peripheral surface (11a) are affixed by bolts (60).