To provide a composite steel-concrete girder structure of a bridge, the height of which can be decreased, which reduces manufacturing costs by reducing welded places, which can keep construction costs low by enabling the simplification of work on a construction site and the shortening of a construction period, and which is erected particularly in a middle-sized or short span, and a construction method for the composite steel-concrete girder structure.
In a main girder 10, a lower flange 11b is welded and joined to a lower end of a steel web 11a, and an upper flange 12 made of reinforced concrete is placed at an upper end. The main girders 10 are carried into a construction site and juxtaposed; a transverse prestressing steel wire 13 (not shown in Fig.) is clamped in the state of penetrating in a direction perpendicular to a bridge axis; and the upper flanges 12 are fastened together so that a floor slab can be formed. The upper flange 12 serves as a supporting flange 22 (not shown in Fig.), so that the main girder can be easily carried into the construction site by decreasing the width of the upper flange 22. A receiving flange part 22a is formed in the lower part of the supporting flange 22, and a precast PC slab 23 and an RC floor slab 24 are supported in the state of being laid between the receiving flange parts 22a of the supporting flanges 22 adjacent to each other.
NISHIYAMA KENICHI
IDENO MAYUKO
TATSUGAMI HISAO
YASUMORI HIROSHI
OKADA NORIKO
DPS BRIDGE WORKS CO LTD
| JPS6282147A | 1987-04-15 | |||
| JP2005163483A | 2005-06-23 | |||
| JPH05340031A | 1993-12-21 |
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