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    • 35. 发明专利
    • CHAIN FIXING DEVICE FOR FLOATING WAVE BREAKER
    • JPH03139491A
    • 1991-06-13
    • JP27706489
    • 1989-10-26
    • MITSUBISHI HEAVY IND LTD
    • OKABE SHUNZOISODA ATSUSHITANIGUCHI MASAAKI
    • B63B21/20
    • PURPOSE:To facilitate adjustment of the length of a chain so as for the chain not to be unnaturally loaded by rotatably supporting both ends of a divided stopper piece for holding the chain on a support bracket engaging a fixing pipe. CONSTITUTION:In a chain fixing device for fixing one end of a chain 4 to a floating body and engaging the other end to the bottom of water, the steel chain 4 is held in a groove 9 of a rectangular beam type divided stopper piece 7 consisting of a pair of two parts capable of freely connected and disconnected so as to receive a downward external force (mooring tensile force). Further, the above divided stopper piece 7 is supported by support brackets 10a-10c on its both sides to be connected to a floating body through a fixing pipe 11. At this time, both ends of the stopper 7 are loaded on the support brackets 10a-10c so that the stopper can rotate about the axis of a span shaft, and the stopper is adjusted to the direction of external forces acting on the chain 4 to prevent excessive bending moments or unnatural loads from being applied to the chain.
    • 36. 发明专利
    • EXECUTION METHOD OF PRECAST STEEL-PLATE CONCRETE WALL
    • JPH02194903A
    • 1990-08-01
    • JP1407689
    • 1989-01-25
    • MITSUBISHI HEAVY IND LTD
    • SEKIMOTO HISASHIYAMAGAMI TETSUJIOKABE SHUNZOSHIMADA RIICHI
    • E01D19/10B28B1/16E04G21/02
    • PURPOSE:To prevent the corrosion of a steel material in a wall body due to the intrusion of rainwater by bending one steel plate, in which studs are implanted, in a U- shape, placing concrete, preparing a U-shaped steel-plate concrete wall, turning over and inverting the wall and setting the wall at a specified position. CONSTITUTION:Studs 2 having the length of the clearance of walls, the inner clearance of oppositely faced steel plates, are implanted at the predetermined locations of one steel plate 1 in a factory. The steel plate 1 is bent in a U shape in a fixed bend radius at a specified position. The steel plate 1 is placed onto a bottom force 3, a top force 4 is pushed against the steel plate and pressed down by a rod 5, and the steel plate 1 is curved in the U shape. The steel plate is curved, and the push rod 5 is drawn out upward and the top force 4 in the horizontal direction, then completing press. The U-shaped steel plate 1 is installed into steel-plate hold-down forms 6, the head sections of the studs 2 and the opposed steel plate 1 are brought into contact, and side end-section forms 7 are mounted and concrete 8 is placed into an internal space formed by the U-shaped steel plate 1 and the end-section forms 7. Placed concrete is cured, the steel-plate concrete wall body is carried to a cite, and turned over at 180 deg. and set at a predetermined location, thus forming an inverted U-shaped precast steel-plate concrete wall body.