| 摘要 |
PROBLEM TO BE SOLVED: To provide a steel composite precast floor slab which can keep costs low because a bottom steel plate does not have to be bent along an undersurface of a haunch by enabling an additional bar along the haunch to be arranged in the inverted trapezoid-shaped haunch in a direction perpendicular to a girder, and which can integrate a precast floor slab, a notch and a main girder together. SOLUTION: This steel composite concrete precast floor slab, which is constituted by combining a concrete undersurface with the bottom steel plate, is characterized as follows: an additional-bar fitting and inserting notch, from which mountain parts of the additional bar along the shape of the inverted trapezoid-shaped haunch are protruded at proper intervals in the direction of a bridge axis, and a stud-bolt fitting and inserting notch for fitting and inserting a stud bolt, which is fixedly provided in the flange of the main girder, are formed in the haunch forming part of the bottom steel plate; a bridge-axis-direction bar, a bar perpendicular to the bridge axis, and the additional bar along the shape of the inverted trapezoid-shaped haunch are arranged on the bottom steel plate in a state in which both ends of the additional bar are supported on the bar perpendicular to the bridge axis, and in which the mountain parts are protruded from the additional-bar fitting and inserting notch of the bottom steel plate; and the bottom steel plate is combined with the concrete undersurface wherein the concrete is placed in locations except a stud-bolt fitting and inserting hole communicating with the stud-bolt fitting and inserting notch formed on the bottom steel plate. COPYRIGHT: (C)2007,JPO&INPIT
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