年次大会
Online ISSN : 2424-2667
ISSN-L : 2424-2667
セッションID: S0430101
会議情報
S0430101 スマート減波構造の創製に関する基礎的検討([S043]減災・サステナブル工学,機械材料・材料加工部門)
浅沼 博柳迫 徹郎鈴木 啓片山 大輝大嶋 一輝
著者情報
会議録・要旨集 フリー

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抄録
This paper describes a trial for realizing smart structures which will be effective for mitigation of disastrous ocean waves such as tsunami. Tidal wave diminishing forests have attracted attention for high mitigation effect on the tsunami caused by the Tohoku earthquake in 2011. However, forests, that is, density and placement of trees, stem diameter and many other parameters cannot be optimized. In order to cope with these problems, smart wave mitigation structures which consist of arrays of structural material bars have been proposed. In this study, experimental models using arrays of aluminum alloy rods and are arranged in two ways and under the parameters of their densities and number of rows have been made and tested. The water flow velocity and level, flow reduction effect and fluid behavior through the models were investigated, and the following results were obtained. 1) When the lattice spacing is small, a large reflected wave is generated in front of the cylinders and a hydraulic jump is caused behind them. These phenomena are thought to contribute to the reduction of water velocity and level. 2) In the case of the cylinders arranged in the hound's tooth, the water velocity and level reduction rates are higher and more stable as compared to those arranged in the square lattice pattern.
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