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INSTALLATION METHOD FOR TSUNAMI FENCE AND TSUNAMI FENCE
To provide a tsunami fence constructible with simple and inexpensive construction, capable of effectively reducing damages of tsunami in the hinterland by adequately suppressing the tsunami force, and an installation method thereof.SOLUTION: A tsunami fence 1 structured with a porous board of a shield factor of 65-75% and a column supporting the board is installed on an upper surface 21 of a breakwater 2 so that the value α of an installation position on the upper surface 21 of a harbor exterior end 22 of the upper surface 21 of the breakwater 2 being "0", and that of a harbor interior end 23 being "1", satisfies relational expressions (1), (2), when assuming a half value of an expected tsunami height as ai, the height from a still-water level to the upper surface of the breakwater as h0, the height of the tsunami fence as h1, the width of the upper surface of the breakwater as B, an attenuation factor as β, and water depth as d. (1) α≥(6ai-2h0-h1)/(1.2B) (2) α≤1-β×ai/B×(2×h1/d).SELECTED DRAWING: Figure 1
【課題】簡易かつ安価な工事のみで構築することができ、津波の勢いを好適に抑制し、背後地における津波の被害を効果的に減じることができる津波フェンス、及び、その設置方法を提供する。【解決手段】想定する津波の高さの半分の値をａｉ、静水面から防波堤の天端までの高さをｈ０、津波フェンスの高さをｈ１、防波堤の天端幅をＢ、減衰率をβ、水深をｄとするとき、防波堤２の天端２１の港外側端部２２を「０」、港内側端部２３を「１」とする、天端２１上における設置位置の値αが、関係式（１）、（２）を満たすように、遮蔽率が６５〜７５％の有孔板と、これを支持する支柱とによって構成される津波フェンス１を防波堤２の天端２１上に設置することを特徴とする。（１） α≧（６ａｉ−２ｈ０−ｈ１）／（１．２Ｂ）（２） α≦１−β×ａｉ／Ｂ×（２×ｈ１／ｄ）1/2【選択図】図１
INSTALLATION METHOD FOR TSUNAMI FENCE AND TSUNAMI FENCE
To provide a tsunami fence constructible with simple and inexpensive construction, capable of effectively reducing damages of tsunami in the hinterland by adequately suppressing the tsunami force, and an installation method thereof.SOLUTION: A tsunami fence 1 structured with a porous board of a shield factor of 65-75% and a column supporting the board is installed on an upper surface 21 of a breakwater 2 so that the value α of an installation position on the upper surface 21 of a harbor exterior end 22 of the upper surface 21 of the breakwater 2 being "0", and that of a harbor interior end 23 being "1", satisfies relational expressions (1), (2), when assuming a half value of an expected tsunami height as ai, the height from a still-water level to the upper surface of the breakwater as h0, the height of the tsunami fence as h1, the width of the upper surface of the breakwater as B, an attenuation factor as β, and water depth as d. (1) α≥(6ai-2h0-h1)/(1.2B) (2) α≤1-β×ai/B×(2×h1/d).SELECTED DRAWING: Figure 1
【課題】簡易かつ安価な工事のみで構築することができ、津波の勢いを好適に抑制し、背後地における津波の被害を効果的に減じることができる津波フェンス、及び、その設置方法を提供する。【解決手段】想定する津波の高さの半分の値をａｉ、静水面から防波堤の天端までの高さをｈ０、津波フェンスの高さをｈ１、防波堤の天端幅をＢ、減衰率をβ、水深をｄとするとき、防波堤２の天端２１の港外側端部２２を「０」、港内側端部２３を「１」とする、天端２１上における設置位置の値αが、関係式（１）、（２）を満たすように、遮蔽率が６５〜７５％の有孔板と、これを支持する支柱とによって構成される津波フェンス１を防波堤２の天端２１上に設置することを特徴とする。（１） α≧（６ａｉ−２ｈ０−ｈ１）／（１．２Ｂ）（２） α≦１−β×ａｉ／Ｂ×（２×ｈ１／ｄ）1/2【選択図】図１
INSTALLATION METHOD FOR TSUNAMI FENCE AND TSUNAMI FENCE
津波フェンスの設置方法、及び、津波フェンス
KOYAMA HIROFUMI (author) / MITSUI JUN (author) / FURUMICHI HIROKO (author) / NAKAGUCHI AKIHITO (author)
2019-04-18
Patent
Electronic Resource
Japanese
IPC:
E02B
HYDRAULIC ENGINEERING
,
Wasserbau
FENCE INSTALLATION STRUCTURE, AND FENCE INSTALLATION METHOD
| European Patent Office | 2023