| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a bridge girder enabling the inclination angle of a cable to be increased and capable of suppressing enlargement of a girder cross section in the vicinity of a fulcrum part. <P>SOLUTION: A bridge girder 1 includes an upper floor slab 11 and a lower floor slab 12 formed of reinforced concrete and a pair of webs 13 connecting the upper floor slab 11 and the lower floor slab 12 to each other, exhibits a box-shaped cross-sectional shape, and has a column head construction part supported by a bridge footing in the vicinity of both ends in a bridge axial direction, with the lower floor slab 12 being supported by cables 21 to 24 diagonally stretched from the column head construction part to its inner space 1i. In the bridge girder 1, the lower floor slab 12 is configured so as to comprise a floor slab part 12a, a pair of thickness increased parts 12b extending downward along both side parts of the floor slab part 12a, and cable anchor parts 12d, the cables 21 to 24 passing through the floor slab part 12a, lower ends thereof being anchored in the cable anchor parts 12d. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
