GRIPPING METAL FITTING ALSO SERVING AS MORTAR INJECTION PIPE IN SHIELDED TUNNEL SEGMENT

摘要

PROBLEM TO BE SOLVED: To inexpensively provide a good-quality gripping metal fitting endurable against large moment from an assembling arm, and further easily embedded in a segment by easily and surely cutting off leakage from the gripping metal fitting also serving as a mortar injection pipe arranged in a shielded tunnel segment. SOLUTION: A taper is formed on the excavation hole surface side of the gripping metal fitting also serving as the mortar injection pipe arranged in the shielded tunnel segment, and flared. Recesses and projections or octopus legs are arranged by extending the expanded part. COPYRIGHT: (C)2005,JPO&NCIPI