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    • 5. 发明专利
    • WATER STOP CONNECTING STRUCTURE OF SEGMENT
    • JPH08193500A
    • 1996-07-30
    • JP1993495
    • 1995-01-13
    • NIPPON STEEL CORPHAZAMA GUMIASAHI DENKA KOGYO KKMATSUMOTO YOSHIJI
    • MATSUMOTO YOSHIJINAKAMURA MINORUSONODA TETSUSHIFUKUSHIMA TAKUO
    • E21D11/04E21D11/38
    • PURPOSE: To reliably prevent leakage water from between steel shell segments adjacent in the longitudinal direction by firmly connecting the steel shell segments to each other. CONSTITUTION: A circular arc-shaped inclined face 3 of a gentle inclination whose diameter contracts backward from the front and a water stop material contact surface 4 of a steep inclination extending in the segment circumferential direction of the circular arc-shaped inclined face 3 of its gentle inclination, are arranged on an outside surface of a steel outside flange 2 projecting backward from an existing steel shell segment 1. A circular arc-shaped inclined face 7 of a gentle inclination whose diameter contracts backward from the front and a water stop material contact surface 8 of a steep inclination extending in the segment circumferential direction of the circular arc-shaped inclined face 7 of its gentle inclination, are arranged on an inside surface of a steel outside flange 6 in a newly arranged steel shell segment 5. A water expansive water stop material 10 where the web 9 side becomes thick is fixed to the circular arc-shaped inclined face 3 of a gentle inclination, and a water expansive water stop material where the web 11 side becomes thick is fixed to the circular arc-shaped inclined face 7 of a gentle inclination, and the respective steel shell segments 1 and 5 are fitted and fixed, and the water expansive water stop material 10 is compressed.