Pipe segment and cast-in-place concrete segment combined structure for tunnel model test platform

The invention discloses a pipe segment and cast-in-place concrete segment combined structure for a tunnel model test platform, which comprises a pipe segment structure and a cast-in-place concrete segment structure which are connected in the longitudinal direction, and the pipe segment structure comprises a base which is a horizontally arranged plate body; the ring-forming pipe pieces are all annular, are all vertically arranged on the base and are sequentially laminated and stacked in the longitudinal direction to form pipe piece sections; the inner bottom is a concrete pouring plate and is positioned at the bottom of each ring-forming pipe piece; a first track in the front-back direction is arranged on the inner sole. The cast-in-place concrete section structure is a cast-in-place lining structure and is oppositely connected with the rear end of the pipe section structure in the front-back upward direction; the width and the height of the pipe section structure are consistent with those of the pipe section