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    • 4. 发明专利
    • VERTICAL COMPOSITE TYPE SHIELD TUNNEL
    • JPS6433398A
    • 1989-02-03
    • JP18783687
    • 1987-07-29
    • MATSUMOTO YOSHIJIKUMAGAI GUMI CO LTD
    • MATSUMOTO YOSHIJITSUURA KENICHI
    • E21D11/04
    • PURPOSE: To enhance the safety of a tunnel by alternately arranging a joint segment long blade plate and a short blade plate of a vertically composite segment ring in the longitudinal direction of the tunnel, and securely building a support member such as a beam member across the right and left segments. CONSTITUTION: A circular lower tunnel segment coupling body 1 with omission of an upper portion is obtained by linking lower ends of respective side segments 18 to both ends of a lower segment, and a circular upper tunnel segment coupling body 2 with omission of a lower portion is made up of a pair of the side segments 18, a pair of upper segments 20, and a key segment 21. Then, the coupling bodies 1, 2 are linked to each other by concrete linking segments 5, 14 each having a long blade plate 3 and a short blade plate 4, to thereby construct a vertically composite segment ring 22. Further, another ring obtained by rotating the ring 22 through 180 degrees is arranged in the longitudinal direction of a tunnel, and at the same time a beam member 26 is laid across the right and left segments 5, 14. Thus, the construction of the tunnel is facilitated, and the strength of the tunnel can be enhanced.