REINFORCING STRUCTURE OF DAM BODY

• Main Authors: MOMIYAMA TAKASHI, OIKAWA MORI, YOSHIHARA TATEO, HARA TADASHI, NISHIYAMA TERUKI, HARADA NORIYOSHI, NAKAYAMA HIROAKI
• Format: Patent
• Language: English; Japanese
• Published: 01.10.2020
• Subjects: EMBANKMENTS; EXCAVATIONS; FIXED CONSTRUCTIONS; FOUNDATIONS; HYDRAULIC ENGINEERING; SOIL SHIFTING; UNDERGROUND OR UNDERWATER STRUCTURES

To provide a reinforcing structure of a dam body capable of suppressing seepage destruction of the dam body, suppressing slide of the dam body by minimizing occurrence of liquefaction inside the dam body, and capable of preventing degradation or dissipation of reinforcement effect causing serious damages.SOLUTION: A dam body 10 has a high impervious part 15 along an upstream slope face 10b, having higher imperviousness than other parts of the dam body 10 and having a predetermined width along the width direction of the dam body 10. A steel-made continuous underground wall 20 is provided in the dam body 10 along the extended direction of the dam body 10. The steel-made continuous underground wall 20 penetrates vertically the high impervious part 15, and an upper end thereof is aligned to an upper surface 10a of the dam body 10, and a lower end is set in a foundation ground S positioned under the dam body.SELECTED DRAWING: Figure 2 【課題】堤体の浸透破壊を抑止できるとともに、堤体の内部における液状化の発生を最小限とすることで、堤体のすべりを抑制し、甚大な被害を引き起こす要因となる補強効果の低下または消失を防ぐことができる堤体の補強構造を提供する。【解決手段】堤体１０は、上流法面１０ｂに沿って、堤体１０の他の部分より遮水性が高く、かつ堤体１０の幅方向に沿って所定の幅を有する高遮水性部分１５を有し、堤体１０に鋼製地中連続壁２０が堤体１０の延在方向に沿って設けられ、鋼製地中連続壁２０は、高遮水性部分１５を上下に貫通するとともに、上端が堤体１０の天端１０ａに揃えられ、下端が堤体の下方に位置する基礎地盤Ｓに設置されている。【選択図】図２