| 摘要 |
PROBLEM TO BE SOLVED: To provide a corrosion-proof precast concrete column capable of being easily installed.SOLUTION: A precast concrete column 1 is formed by connecting an upper column 3 with a taper part whose diameter gradually increases to lower direction and a concrete lower column 5 with a taper part 4 whose diameter gradually increases to lower direction through a joint steel pipe 6 in a state where an end face of the upper column and an end face of the lower column face to each other. The joint steel pipe 6 is integrally molded with the upper column 3 and has an integral molding part 11, which continues to an outer peripheral surface of the upper column 3, and a fitting part 12, which is fit to the taper part 4 of the lower column 5. As the joint steel pipe 6 is integrated with the upper column 3, water hardly enters a boundary part between the upper column 3 and the joint steel pipe 6, which prevents corrosion due to moisture. As only fitting the joint steel pipe 6 integrated with the upper column 3 to the lower column 5 allows the upper column 3 and the lower column 5 to be connected, the concrete column can be easily installed.SELECTED DRAWING: Figure 1 |
