Abstract: A tsunami breakwater wall of retaining wall structure supported by a steel pipe pile (1), includes a steel pipe pile (2) that has a bottom end thereof reach a support layer (18) of a ground (16) and is installed to a ground such that an upper end thereof is positioned to a part below a surface of a ground (16), a retaining wall (3) that is placed on a ground (16) and supported by the steel pipe pile (2), and a ground anchor (6) that connects the retaining wall (3) and a support layer (18) of a ground (16).

Abstract: A tsunami breakwater wall of a multilayered steel pipe pile structure 1, includes a multilayered steel pipe pile 2 where a bottom end thereof reaches a predetermined depth of a support layer 28 and is installed to a ground 26 such that an upper end thereof protrudes upward from a ground surface 26a, and a wall body 15 constructed integral with a part of the multilayered steel pipe pile 2 that protrudes upward from the ground surface 26a. The multilayered steel pipe pile 2 is made from a plurality of large diameter steel pipe piles 3-5 of different diameters, an upper end of an inner most side steel pipe pile 3 protrudes upward from the ground surface 26a, and the wall body 15 is constructed to a part of the steel pipe pile 3 protruding upward from the ground surface 26a.

Abstract: A tsunami breakwater wall of retaining wall structure supported by a steel pipe pile 1, includes a steel pipe pile 2 that has a bottom end thereof reach a support layer 18 of a ground 16 and is installed to a ground such that an upper end thereof is positioned to a part below a surface of a ground 16, a retaining wall 3 that is placed on a ground 16 and supported by the steel pipe pile 2, and a ground anchor 6 that connects the retaining wall 3 and a support layer 18 of a ground 16.