JP5207091B2

JP5207091B2 - Movable tsunami buffer weir

Info

Publication number: JP5207091B2
Application number: JP2011231146A
Authority: JP
Inventors: 英外 ▲濱▼田
Original assignee: ▲濱▼田英之
Priority date: 2011-10-03
Filing date: 2011-10-03
Publication date: 2013-06-12
Anticipated expiration: 2031-10-03
Also published as: JP2013079557A

Description

津波や高波などの海からの波により起こる浸水などの被害を抑えるために設置する防波堤に関するものである。It relates to breakwaters that are installed to prevent damage such as inundation caused by waves from the sea such as tsunamis and high waves.

今までの津波防御用の防波堤は、鉄筋の入ったコンクリートなどを使った固定式のものが主体であり、大がかりで、材料費や工事費が膨大であった。又、今までに発明されていた可動式のものは、空気室を設置するなどにより、複雑な工夫により動作されるもので、材料費や工事費が嵩むし、信頼性が必ずしも高くなかった。Until now, tsunami protection breakwaters were mainly fixed types using concrete with reinforcing bars, which were large-scale and had huge material and construction costs. Further, the movable type that has been invented so far is operated by a complicated device by installing an air chamber or the like, and the material cost and the construction cost increase, and the reliability is not necessarily high.

特許公開２０１０−１０１０９７Patent Publication 2010-101097

固定式の防波堤でかかる膨大な材料費や工事費を低減させること。他の可動式の防波堤で必要である複雑な工夫や動作を避け、自然の力をうまく活用した設計により、高い信頼性で動作が行われるようにすること。To reduce enormous material and construction costs for fixed breakwaters. Avoid complicated ingenuity and operations required for other movable breakwaters, and ensure that operations can be performed with high reliability by using natural power.

材料費を節減するために、軽質材を使い、固定式ではなく、必要に応じて防波堤として機能する可動式の防波堤を考慮した。可動式の構造体を、防波堤として機能させるために必要なメカニズムの信頼性が高く、充分な作動力を与える機構が必要で、それに適したものとして、構造体が水中に没した時の浮力を活用することを考案した。
これらの点から、有効に動作し、防波堤として充分に機能する仕組みを考案した。In order to save material costs, we considered a movable breakwater that uses light materials and functions as a breakwater instead of a fixed one. The mechanism required to make the movable structure function as a breakwater is highly reliable, and a mechanism that provides sufficient operating force is required. The buoyancy when the structure is submerged in water is suitable. Invented to utilize.
From these points, we have devised a mechanism that works effectively and functions sufficiently as a breakwater.

当発明では、軽質で環境に優しい材料を中心に使うので、安価な材料費、工事費で済む。この装置は可動式であり、地面などに伏せて設置し、いざという時に、押し寄せる水の中で、浮力と押し寄せる波の力で立ち上がり、防波堤の役割を果たすので、見た目に邪魔にならず、波の力を弱める効果もあり、立ち上がった堰の高さに相応する防波効果が達成できる。
又、引き波に対しても、浮力により堰として機能するので、災害の低減に役立つ。
又、砂の中に伏せて設置することもできるので、景勝地では、景色を阻害しないで、災害防止ができる。In the present invention, since light and environmentally friendly materials are mainly used, inexpensive material costs and construction costs are sufficient. This device is movable, installed face down on the ground, etc., and in the event of an emergency, it rises with the power of buoyancy and rushing waves in the rushing water and acts as a breakwater, so it does not get in the way of the eyes, There is also an effect of weakening the power of, and a wave-breaking effect corresponding to the height of the rising weir can be achieved.
Moreover, since it functions as a weir by buoyancy against a pulling wave, it helps to reduce disasters.
Moreover, since it can also be set up in the sand, it can prevent a disaster in a scenic area without obstructing the scenery.

図１は、本発明の構造体（ボーセキ）の構造図である。FIG. 1 is a structural diagram of a structure (Boseki) according to the present invention. 図２は、本発明の設置図である。FIG. 2 is an installation view of the present invention. 図３は、本発明の津波を緩衝する時の動作を表した図である。FIG. 3 is a diagram showing an operation when buffering a tsunami according to the present invention. 図４は、本発明の大規模津波に対応する場合の設置想定図である。FIG. 4 is an installation assumption diagram corresponding to the large-scale tsunami of the present invention.

構造体は、軽質材の板と枠組みで作る。構造体の枠組みの一方の柱を設置面に蝶番形式で接続し、構造体自体は設置面に着けられたドアのように（浮力と波の力を使って、波の威力を弱めながら）立ち上がり、水位に応じて、防波堤として機能する。
・構造体は、扱い易く、強度を保ちやすい大きさで作成されるため、１個のまとまった構造体で、ある海岸線全体の防波堤の役割を果たすのは難しい。そこで、まとまった防波堤としての機能を果たすために、対象となる海岸線に平行に（海岸線の対象位置に）複数の構造体をある隙間を置いて並べることで対応する。（図４参照）
・構造体は軽質の材料で作成されており、強力な津波を完全に押さえ込むような強度をもたせるのは、非現実的であるので、その津波の力を多少は逃がすために、隣り合った構造体の間にある程度の隙間を取るし、山側に傾いても良いように自由度を持たせる。これにより多少の水が防波堤より陸側に侵入するが、堰の高さまでの大部分の津波の動きを抑えることができるので、相応の効果が期待できる。
・構造体の強度の関係から、あまり高い防波堤効果を一列の構造体に持たせることができない。大規模な津波に対しては、構造体をある程度の距離を置いた複数列として設置することで対応する。（図４参照）The structure is made of a light material board and frame. One pillar of the structure frame is connected to the installation surface in a hinge form, and the structure itself rises like a door attached to the installation surface (using buoyancy and wave forces to weaken the power of waves) Depending on the water level, it functions as a breakwater.
・ Since the structure is easy to handle and has a size that can maintain strength, it is difficult to play the role of a breakwater for a whole coastline with a single structure. Therefore, in order to fulfill the function as a unified breakwater, it is possible to arrange a plurality of structures parallel to the target coastline (at the target position of the coastline) with a certain gap. (See Figure 4)
・ The structure is made of light materials, and it is unrealistic to give it the strength to completely suppress a strong tsunami. Make some gaps between the bodies, and give them some flexibility so that they can lean to the mountain side. As a result, some water enters the land side from the breakwater, but since the movement of most tsunamis up to the height of the weir can be suppressed, a corresponding effect can be expected.
・ Due to the strength of the structure, it is not possible to give a row of structures a very high breakwater effect. A large-scale tsunami can be handled by installing the structures in multiple rows at some distance. (See Figure 4)

１．山板：動作時に山側に立つ板で、機密性と強度を持つ。
２．海板：動作時に海側に立つ板で、上部に押し寄せる水を取り込む開口部を、下部に混入してくる砂や瓦礫を抜き出せる開口部を持つ
３．軸横柱：動作時に設置面側になる横柱で、接地面に設けた複数箇所（３点以上）の接合部に蝶番形式で接合する。
４．浮き横柱：動作時に水に浮く横柱で、平常時に砂や瓦礫が構造体内に侵するを防止する役割も持つ（構造体内はできるだけ空洞にしておく）
５．たて柱：動作時に垂直方向に動いて立つ柱で、山板と海板の強度を高める
６．蝶番形式接合部：軸横柱と設置面を繋ぐ部分で、杭などで設置面に固定する。浸水時にずれたり外れたりしないように強度を持たせる。1. Mountain board: A board that stands on the mountain side during operation and has confidentiality and strength.
2. Sea plate: A plate that stands on the sea side during operation, and has an opening for taking in water that pushes up to the upper part, and an opening for extracting sand and rubble coming into the lower part. Axial horizontal column: A horizontal column that becomes the installation surface side during operation, and is joined in hinges to joints at multiple locations (three or more points) provided on the ground surface.
4). Floating horizontal column: A horizontal column that floats on the water during operation, and also has the role of preventing sand and debris from invading the structure during normal times (keep the structure as hollow as possible).
5. Vertical pillar: A pillar that moves vertically during operation, and increases the strength of the pile and sea plate. Hinge type joint: A part that connects the horizontal shaft and the installation surface, and is fixed to the installation surface with a pile. Give strength so that it will not slip or come off when it is flooded.

Claims

A movable tsunami buffer weir constructed by sandwiching a light material frame between light material plates and installing a structure like a door along the ground or wall surface. Movable tsunami buffer weirs that use the buoyancy and wave power of the tsunami to stand up and reduce the power of tsunamis.