| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of constructing a rigid-frame viaduct, in which installation work of supports for supporting an overhanging portion is carried out quickly and with good accuracy, and construction work can be safely and easily carried out even if installation lots for scaffolding and temporary supports cannot be secured, and to provide a precast form. SOLUTION: An RC slab of the rigid-frame viaduct includes an overhanging portion overhanging in a width direction of the rigid-frame viaduct and having an inclined surface on a bottom portion, and the method of constructing the rigid-frame viaduct is provided for forming the RC slab including the overhanging portion by using the precast form 5, and composed of the following steps. In the inclined surface positioning step, before setting the precast form 5, support members 11, 12 having heights different from each other so as to conform to the inclined surface of the overhanging portion, are set side by side in the width direction, and thus positioning of the inclined surface of the precast form 5 is achieved. In the form setting step, the precast form 5 is set on the positioned support members 11, 12, such that the inclined surface matches with the same. COPYRIGHT: (C)2008,JPO&INPIT
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