PURPOSE: To prevent generation of voids and dislocation and to improve construction time by connecting respective can bodies placed on a construction floor for burying the cans to respective opening end faces through elastic members, flexibly tensing a PC steel passing through a thick wall and burying the can bodies.

CONSTITUTION: In each can body 1, a proper number of sheath pipes 3a are buried in the direction of its long side. On an end face 1a, a recessed groove is formed and a rubber expansion rubber seal 8 is provided. Then, the can bodies 1 are continuously connected together on a burying construction floor (n) through elastic material 2 on their end faces 4. A PC steel material 3 is inserted into the sheath pipe 3a and flexibly tensed so that the elastic material 2 can fully meet rotational distortion. Accordingly, even when the ground is depressed due to consolidation, the elastic material 2 generates the rotational distortion, is bent and deformed, so that the generation of any void on the lower face of a water passage of the generation of leakage due to the dislocation of connecting part can be prevented. Since pile foundation is not required, construction can be carried out economically and in a short period.