| 摘要 |
PROBLEM TO BE SOLVED: To provide a steel slit dam greatly excellent in workability and economical efficiency, including self-standing steel pipe materials which can be constructed without welding work for mounting flanges thereon. SOLUTION: A steel slit dam 11 comprises a plurality of self-standing chevron steel pipe materials 10 each of which has an upstream-side steel pipe material 1 and a downstream-side steel pipe material 2 assembled via a girth 3 in a shevron-shape inclining to the flowing direction of river water and installed on a concrete foundation 9, and which are installed at spaces in a direction perpendicular to the flowing direction of the river water. The girth 3 has an upper end integrally joined to the upper end of the upstream-side steel pipe material 1 at a shevron apex angle with welding work, and the downstream-side steel pipe material 2 has an upper portion on the inner face of which a protrusion and a reinforcement are provided and in which concrete 8 can be filled. Into the upper end opening of the downstream-side steel pipe material 2, the lower end of the girth 3 is inserted, and then buried and joined with the concrete 8 filled therein. COPYRIGHT: (C)2013,JPO&INPIT |
