| 摘要 |
PROBLEM TO BE SOLVED: To provide a pile which is easily buried into an installation surface and hardly comes out after being buried once.SOLUTION: A steel pipe pile 20 includes a cylindrical main body part 30, and two pairs of blades 40a-40d provided on a side face of the main body part 30 respectively. The blades are fitted such that the blades 40a and blade 40c are inclined around an axis A (a broken line A in Fig. 1) of a virtual cross section, cutting the main body part 30 horizontally, at about 15° to the virtual cross section, and the blade 40b and blade 40d are inclined at -15°. Thus, the pairs of the blade 40a and blade 40b, and the blade 40c and blade 40d are fitted to be inclined around the same axes, respectively, so the blade 40a and blade 40c and the blade 40b and blade 40d are in parallel relation to be easily buried and hardly extracted. |
