CORE STEEL SEGMENT FOR SHIELD TUNNEL

CORE STEEL SEGMENT FOR SHIELD TUNNEL

PROBLEM TO BE SOLVED: To provide a core steel segment which prevents the occurrence of cracks in concrete structure containing it even if strain beyond a permissible prescribed stress strain occurs in a steel shell. SOLUTION: In the core steel segment 11, an ultra-high molecular polyethylene sheet 1...

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Bibliographische Detailangaben
Hauptverfasser: TAKAKU SETSUO, MORIYA YOICHI, HINO YOSHIJI, KATSUNUMA KIYOSHI, SANO AKIRA, IWAKIRI MICHIYUKI, KOBAYASHI KAZUHIRO, INOUE TAKESHI, ITO GIICHI, HASHIMOTO HIROHIDE, HAYAKAWA JUNICHI, NAGAOKA SHOGO
Format: Patent
Sprache:eng
Schlagworte:
EARTH DRILLING
FIXED CONSTRUCTIONS
GALLERIES
LARGE UNDERGROUND CHAMBERS
MINING
SHAFTS
TUNNELS
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Zusammenfassung:PROBLEM TO BE SOLVED: To provide a core steel segment which prevents the occurrence of cracks in concrete structure containing it even if strain beyond a permissible prescribed stress strain occurs in a steel shell. SOLUTION: In the core steel segment 11, an ultra-high molecular polyethylene sheet 14 is provided as a buffer between each main beam 4 and concrete structure 3. A plurality of arc-shaped core steel segments 11 is continuously arranged circumferentially into an annular shape. The wall surface of a tunnel structure or the like is constructed by joining the opposing segment end connections 5, 5 together in the excavation direction of a tunnel-shaped vertical pit or a tunnel constructed underground, by means of the thrust forces of a jack JJ, etc. such as a shield machine S or the like. COPYRIGHT: (C)2007,JPO&INPIT