| 摘要 |
PROBLEM TO BE SOLVED: To provide a large span and a thin type of a steel concrete synthetic floorslab. SOLUTION: In this synthetic floorslab 1 of a steel material and concrete used as a floorslab of a steel bridge, the synthetic floorslab is composed of a bottom steel plate 5, horizontal ribs 4 juxtaposed in a plurality at prescribed intervals on the upper surface side of the bottom steel plate 5 and the concrete 6 placed on the bottom steel plate 5 and embedding the horizontal ribs 4, the bottom steel plate 5 is formed in an upward curving arch shape over the center from both ends, and an upper surface of the concrete is substantially formed as a horizontal plane. Both end parts of the synthetic floorslab 1 are directly supported by main beams 2, and horizontal force generated in the synthetic floorslab 1 is directly transmitted to the main beams 2. The mutual main beams 2 are connected by a horizontal support material 7, and are formed as a structure for receiving arch horizontal reaction of the synthetic floorslab 1 by the horizontal support material 7 via the main beams 2.
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