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    • 5. 发明专利
    • SEGMENT HAVING HOOK JOINT
    • JPH08232584A
    • 1996-09-10
    • JP4058395
    • 1995-02-28
    • YAMAMOTO MINORUSATO KOGYO
    • YAMAMOTO MINORUICHINO MICHIAKIKIRITANI YOSHIHARUYOSHINARI TOSHIO
    • E21D11/08
    • PURPOSE: To connect segments easily and in a short time without using a bolt by installing a male metal fitting on one side and a female metal fitting on the other side in a recessed part of a joint surface in parallel to a tunnel axis for tunnel lining cement and fitting with a wedge. CONSTITUTION: A recessed part 3 is installed to a joint surface in parallel to a tunnel axis of a tunnel lining segment while a female metal fitting 1 having a slanted fitting part, whose head is gradually slanted toward a cutting face, is installed to a recessed part 3 of one joint surface. A male metal fitting 2, which wedges in the female metal fitting 1, is installed to the recessed part 3 on the other side. A total space of the recessed part of the joint required to fit both male and female metal fittings 1 and 2 is found from an equation where D>=(Bm -tm )sinθ+tf +tm , wherein Bm and tm stands for the outside length and thickness of the fitting part of the male metal fitting 2 while tf for the thickness of the female metal fitting 1, and θ stands for a slanted angle of the fitting part. The slanted surface of the male metal fitting 2 of a segment A' is fitted in and wedged with a slanted fitting part of the female metal fitting 2 of a segment A so that they may be connected. A succeeding segment joint is fitted in a preassembled ring segment and aligned and fixed with a through bolt.