Segment manufacturing method and concrete-integrated steel segment

摘要

PROBLEM TO BE SOLVED: To provide a method for producing a segment in which a finished face is satisfactory, also, high quality application is made possible, and also, the securing of water stopping properties is made possible, and a concrete integrated type steel segment.SOLUTION: Provided is a concrete integrated type steel segment comprising: a pair of main girders provided on both the edges in the axial direction of a tunnel; a pair of edge plates 5, 5 provided on both the edges in the circumferential direction of the tunnel; a skin plate 6 covering the edge sides on the nature ground sides of a pair of the main girders 4, 4 and a pair of the edge plates 5,5; concrete 3 placed at the inside of a space surrounded by the main girders 4, 4, the edge plates 5, 5 and the skin plate 6; and a cover material 9 of covering a placing port 81 formed at the central part in the circumferential direction of the tunnel of the skin plate 6.SELECTED DRAWING: Figure 2