SEGMENT PIECE, SEGMENT RING, AND TUNNEL LINING BODY

摘要

PROBLEM TO BE SOLVED: To provide a segment piece capable of raising the resistance force to inside pressure generated in the inside when load acts from a back face by a simple configuration and to provide a segment ring composed of the segment piece and a tunnel lining body composed of the segment ring.;SOLUTION: This segment piece 10 has a back face side main reinforcement 20 arranged on a back face side of the segment piece 10 to extend in the peripheral direction of the segment piece 10, an inner face side main reinforcement 30 arranged on an inner face side of the segment piece 10 to extend in the peripheral direction of the segment piece 10, and a hoop reinforcement 40 arranged between the back face side main reinforcement 20 and the inner face side main reinforcement 30.;COPYRIGHT: (C)2009,JPO&INPIT