Construction method of joint members, pile foundations and pile foundations

摘要

PROBLEM TO BE SOLVED: To provide a joining member, a pile foundation and a method for constructing a pile foundation, which can be constructed more easily. SOLUTION: This is a joining member 10 to be joined to a pile head of a steel pipe pile 11 to be placed in the ground, and a covering cylinder portion 20 having a lower end surface 23 opened and covering the pile head from the lower side, and the above. A protrusion 30 that protrudes upward from the upper end surface 22 of the covering cylinder portion 20 is provided, and the outer diameter of the covering cylinder portion 20 is larger than the inner diameter of the driving adapter of the pile driver, and the outer diameter of the protruding portion 30. Is smaller than the inner diameter of the driving adapter, and a shoulder portion 22b in which the protruding portion 30 is not located is formed on the peripheral edge of the upper end surface 22 of the covering cylinder portion 20 and inside the protruding portion 30. The nut accommodating portion 33 is formed, and the upper end surface 32 of the protruding portion 30 is formed with a first through hole that communicates vertically with the accommodating portion 33 and into which a bolt to be fastened to the nut is inserted. ing. [Selection diagram] Fig. 2