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    • 5. 发明专利
    • METHOD AND STRUCTURE FOR EARTHQUAKE RESISTANT REINFORCING OF EXISTING COLUMN
    • JPH10148038A
    • 1998-06-02
    • JP34265097
    • 1997-12-12
    • OKUMURA CORP
    • SHIRAISHI FUMIOARANO MASANOBUTAKEUCHI MIKIONAKANO YOSHINORI
    • E04C3/34E04C5/01E04G23/02
    • PROBLEM TO BE SOLVED: To reinforce an existing column by one hoop bar worked into a spiral bundle by disposing a spiral hoop bar around an existing column at a prescribed interval from the outer peripheral face of the existing column, and filling a gap between the existing column and the spiral hoop bar with mortar. SOLUTION: A spiral hoop bar 1 is worked into a spiral bundle in a rectangular loop along the outer periphery of an existing column 51, and is disposed in a close vicinity of the outer face of the existing column 51. An opening face of the spiral hoop bar 1 is disposed in the direction along the vertical face in opposition to the outer face, and an end bent at a right angle for use in winding start is fixed in a hole drilled in the lower end column face of the existing column 51. Furthermore, rotation is performed in the direction X where the bundle is unwound in this state, the circumference of the existing column 51 is rotated in the direction shown by Y, and winding is performed around the existing column 51 one loop by one loop. A gap between the already set column and the spiral hoop bar 1 is filled with mortar, and seam welding of the conventional ring-like hoop bar is made unnecessary. Thereby the existing column can be efficiently firmly reinforced in earthquake resistance by execution of the efficient hoop bar 1 without fewer defects.
    • 6. 发明专利
    • CARRYING TRUCK OPERATION TRUCK
    • JPH1113400A
    • 1999-01-19
    • JP18037197
    • 1997-06-19
    • OKUMURA CORP
    • OKADA YOSHIZUMIKASAI TAKASHINAKANO YOSHINORI
    • E21F13/02
    • PROBLEM TO BE SOLVED: To smoothly and efficiently send trucks loaded with segments in a tunnel from a shaft side and send the vacant trucks out of the tunnel. SOLUTION: Grooved lines 5 with the same length with a row of trucks from the track end are provided under the track 1 laid from a slewing structure 3 side arranged at a shaft side to the inside of a tunnel to transfer trucks 2 loaded with construction materials sent out of the slewing structure 3 by the first crane car traveling in the grooved lines 5, to a specified position on the track 1 one by one and connect together. And further, a cross-sectional groove 7 is formed at the end of the track to transfer a starting car 11 to the track 1 by the second crane car 8 arranged in the cross-sectional groove 7 and send the row of trucks in the tunnel. After the trucks have been sent in the tunnel, vacant trucks in a row are dragged by the starting car 11 and sent to the slewing structure 3 side by the first crane car.
    • 8. 发明专利
    • METHOD OF WINDING SPIRAL HOOP REINFORCEMENT AROUND EXISTING COLUMN
    • JPH09158494A
    • 1997-06-17
    • JP32438995
    • 1995-12-13
    • OKUMURA CORP
    • SHIRAISHI FUMIOARANO MASANOBUTAKEUCHI MIKIONAKANO YOSHINORI
    • E04C3/34E04G23/02
    • PROBLEM TO BE SOLVED: To reinforce an existing column efficiently without a defect utilizing the torsional deformation of a spiral hoop reinforcement by having a hoop reinforcement machined into a spiral bundle and winding it around the existing column while holding the opening face of the hoop reinforcement in the state of facing laterally in opposition to the outer surface of the existing column. SOLUTION: Steel wires of high strength are machined into a spiral bundle so as to form a rectangular loop along the periphery of an existing column 51. A spiral hoop reinforcement 1 is brought in proximity to the outer surface of the existing column 51 and disposed with its opening face facing laterally. When the tip bent at a right angle so as to be a winding start edge is inserted and fixed into a hole bored in the lower end of the existing column 51, the bundle of the spiral hoop 1 circulates around the existing column 51 in a direction Y while the opening face is rotated in a direction X of loosening the bundle along a vertical direction so as to be wound around the existing column 51 loop by loop. The spiral hoop reinforcement 1 has to be only twisted by 90 deg. per half periphery length of the column 51 so as to be woundable within a range of elastic deformation and thereby to be constructible even though space around the column is small.