| 摘要 |
PROBLEM TO BE SOLVED: To provide an erection method for a bridge capable of being erected by an incremental launching method even if the bridge has a comparatively longer span length in the erection method for the bridge formed so as to project an upper floor slab to both sides in the orthogonal direction of a bridge axis from a box girder section. SOLUTION: After a lower floor slab 14, a pair of right and left webs 16 and the central part in the orthogonal direction of the bridge axis of the upper floor slab 12 connected to manufacture the box girder section 20 at a construction yard adjoining an erecting position, the box girder section 20 is pushed toward the erecting position, and after the extrusion has been completed, the construction of each projected part 12B of the upper floor slab 12 is carried out. Bending rigidity in the case of extrusion is thereby sufficiently ensured, and self-weight in the case of extrusion can be reduced. COPYRIGHT: (C)2005,JPO&NCIPI
|
