| 摘要 |
PROBLEM TO BE SOLVED: To eliminate a gap between a mobile form and a main girder of a bridge, at a contact portion structure for a mobile form apparatus for use in cast-in-place concrete for forming a floor slab on the main girder. SOLUTION: A joint portion of a mobile form apparatus comprises an adjusting means 7 for eliminating a gap by deforming itself according to deformation of a main girder 1 or the like. More specifically, the adjusting means 7 includes a mobile member and a biasing member, and it is formed like a sliding mechanism in which the biasing member presses and moves the mobile member toward an abutting portion. Alternatively, the adjusting means 7 includes the mobile member and a pressing member, and a contact surface between the mobile member and the pressing member forms an upward expanding slant surface. Therefore, the adjusting means is formed like a wedge mechanism in which the pressing means moves the mobile member toward the main girder depending on the weight of placed concrete, due to the function of the wedge. Further alternatively, the adjusting means 7 includes the biasing member on the outside of a side form 5, and it is formed like a sliding mechanism for pressing and moving the side form 5 toward the main girder.
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