| 摘要 |
PROBLEM TO BE SOLVED: To prevent the danger of buckling/collapsing breakage of a bridge by increasing rigidity strength compared with a conventional hollow bridge girder structure. SOLUTION: A frame body 1 for forming a hollow part is formed of a hollow part component formed of a heat insulating material made of foam synthetic resin or the like, so as to be integrated while being mounted in the whole hollow part region of a hollow bridge girder structure P formed with a hollow part at the center part by the frame body 1 for forming the hollow part. The hollow part component is formed of a plurality of center block bodies C1, C2, C3, C4, an upper side block body A fittingly arranged on each upper side of the center block bodies C1, C2, C3, C4, and a lower side block body B fittingly arranged on each lower side of the center block bodies C1, C2, C3, C4. The center block bodies C1, C2, C3, C4 are formed in respectively different height shape according to the vertical height difference of the hollow bridge girder structure P. Additionally provided recessed parts 2 of stepped shape for additionally providing reinforcing support plates 3 are formed at the right and left shoulder parts of the upper side block body A. COPYRIGHT: (C)2004,JPO |
