| 摘要 |
PROBLEM TO BE SOLVED: To provide a technique related to the structure of a highway bridge, in which load-carrying capacity is increased and a lightening is improved and a durable period is lengthened by installing a fiber reinforcing layer interposed to a resin mortar layer onto the top face of a concrete floor slab for the highway bridge. SOLUTION: The surface of the concrete floor slab 2 is cut up to a specified depth, and the first resin mortar layer 6a is placed up to approximately the half of the depth. The fiber reinforcing layers 7 composed of carbon-fiber impregnating reinforcing layers, glass-fiber reinforcing layers, ceramic-fiber reinforcing layers or aramid-fiber reinforcing layers are arranged and constituted at specified mutual intervals A in the longitudinal direction of the highway bridge 1 on the layer 6a, and disposed as a fiber reinforcing layer group having a specified width B and a specified thickness C. The second resin mortar layer 6b is placed up to the same height as the surface height of the floor slab 2, and a sheet waterproofing material layer 11 is laid between the layer 6b and a paving layer 3. The layer 11 is laid after a quartz sand layer 9 is scattered on the layer 6b and the upper section of the layer 9 is coated with an asphalt rubber adhesive layer 10. The paving layer 3 such as an asphalt pavement is carried out lastly, and the highway bridge 1 is finished. COPYRIGHT: (C)2004,JPO
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