| 摘要 |
PROBLEM TO BE SOLVED: To provide a road expansion structure in which connecting work of adjacent transverse pre-stressing PC steel is easy and which can secure the strength at the projection part. SOLUTION: The end part 11T on the valley side of a pre-cast floor slab 11 is projected and expanded. The transverse pre-stressing PC steel 12 is inserted to the projection part 14H of a plurality of the pre-cast floor slabs 11-. The end part 122 on one side of the transverse pre-stressing PC steel 12 is fixed to the pre-cast floor slab 12 by a fixing tool 21. The end part 122 on the one side extended from the fixing tool 21 is inserted to the adjacent pre-cast floor slab 11. The end part 122 on the one side inserted to the adjacent pre-cast floor slab 11 is connected to the end part 121 on the other side of the adjacent transverse pre-stressing PC steel 12 with a connecting tool 25. The end part 122 on the one side can be relatively easily moved at a position apart from the fixing tool 21. The transverse pre-stressing PC steel 12 having the end part 121 on the other side can be also easily moved because it is before fixing. Accordingly, the positioning of both end parts 122, 121 is easy. As a result, it is possible to simply execute the connection with the connecting tool 25. COPYRIGHT: (C)2005,JPO&NCIPI
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