| 摘要 |
PROBLEM TO BE SOLVED: To easily construct a floor slab of high strength while preventing cost and weight increase. SOLUTION: A concrete floor slab 1 is formed out of a floor slab forming member 2 and concrete C placed on the upper part of the floor slab forming member 2. Also, the floor slab forming member 2 is formed out of a skin plate 3, a plurality of square tubes 4 laid on the upper surface of the skin plate 3 and a plurality of reinforcements 5 fixed to the upper parts of the square tubes 4. Divisions 4a are arranged near both ends of each square tube 4 and this tube 4 is made hollow. A joint reinforcement 6 is provided along the lengthwise direction of the square tube 4 and a plurality of connecting reinforcements 7 are arranged in a direction approximately orthogonal with the square tube 4. A fixing bolt 8 is made to pass the skin plate 3 and the square tube 4 from a lower position, and a nut 11 is attached to the end of the bolt 8 via a fastener 10 having a holding part 9. The nut 11 is tightened with a reinforcement 5 laid in the holding part 9 of the fastener 10, thereby fastening the reinforcement 5 to the upper part of the square tube 4, and integrating the skin plate 3 and the square tube 4 with each other. |
