| 摘要 |
PURPOSE:To enhance safeness to tension loads by preventing the breakage of a pile by a method in which a gabled projection is provided to a head fixing plate, and the fixing plate is provided with a throttled hole, a tapered hole, a projection, and a 8-shaped punched hole. CONSTITUTION:A lower punched hole for tap hole 2 and a throttled projection 3 are provided in a 8-shaped PC steel head-fixing plate 1, and a gabled projection 4 is provided to the side of the tap hole 2. A throttled hole 8 is formed in the projection 4, and a tapered hole 6 and a projection 7 are formed on the back of the hole 8 portion. A 8-shaped punched hole 9 leading to the tap hole 2, the hole 8, and the hole 6 is provided, and a tap hole is formed in the tap hole 2. Since stable competition of PC head with PC hole is eliminated and also the PC head has lesser projections similarly to the tip portion of pile, attachment can be easily fitted. |
