| 摘要 |
PROBLEM TO BE SOLVED: To maintain the safety and facility of construction and to reduce the total costs by downward fitting a spiral reinforcement from above into loop reinforcements which are zigzag disposed in a manner protruding from both side end faces of respective floor plates. SOLUTION: A leading precast floor plate 1 is mounted on an upper face of a bridge girder, and a second precast floor plate 1 temporarily placed on the same with a predetermined interval from the leading one is slid, whereby opposed projective joint pieces 1a, 1a are connected together. Next, loop reinforcements 2, 2 arranged on both side end face 1b, 1b of the respective floor plates at predetermined intervals, in a manner being vertical with respect to a floor face, are alternately zigzag protruded therefrom. Then, a spiral reinforcement 4 or a connected ring reinforcement having a pitch at which the reinforcement can be fitted into gaps of the loop reinforcements 2 is downward fitted from above in a direction orthogonal to a bridge shaft. Thus, even if the number of main reinforcements is smaller than that of a conventional loop joint, the present loop joint can maintain the same strength as that of the conventional one.
|
