JP5235012B2 - Slide type seawall - Google Patents

Slide type seawall Download PDF

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JP5235012B2
JP5235012B2 JP2009288956A JP2009288956A JP5235012B2 JP 5235012 B2 JP5235012 B2 JP 5235012B2 JP 2009288956 A JP2009288956 A JP 2009288956A JP 2009288956 A JP2009288956 A JP 2009288956A JP 5235012 B2 JP5235012 B2 JP 5235012B2
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wall
wall body
opening
tide
openings
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JP2011127387A (en
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徳男 片倉
一教 伊藤
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Taisei Corp
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
    • Y02A10/11—Hard structures, e.g. dams, dykes or breakwaters

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Description

本発明は陸上構造物への浸水被害を防止するための防潮壁に関し、より詳しくは、防潮壁に設けた開口部の解放・閉塞を簡易に切り替え可能なスライド型防潮壁に関する。   The present invention relates to a tide wall for preventing inundation damage to a land structure, and more particularly, to a slide-type tide wall capable of easily switching between opening and closing of an opening provided in the tide wall.

津波や高潮、豪雨などの水位上昇によって陸上施設への浸水被害を防止すべく、種々の防潮堤が開発されている。
防潮堤が恒久的に設置される構造物である場合、見通しや風通しが悪くなり周辺の景観や環境に影響を与える懸念が生じることから、浸水が予測される時にのみ防潮機能を達成することが可能な防潮堤の提供が望まれている。 Various seawalls have been developed to prevent inundation damage to land facilities due to rising water levels such as tsunami, storm surge and heavy rain.
If the seawall is a permanently installed structure, the prospects and ventilation will be worse, and there will be concerns that the surrounding landscape and environment will be affected. Providing a possible seawall is desired.

浸水時のみに防潮機能を発揮する防潮堤・防潮壁として、例えば跳ね上げ式の浸水防止装置がある。   For example, there is a flip-up type inundation prevention device as a tide wall and a tide wall that exhibits a tide prevention function only during flooding.

しかし、従来の浸水防止装置では、以下の様な問題が生じる。
（１）跳ね上げ式の防潮壁では、数十ｃｍ程度の壁体を構築するに留まるため、数ｍ規模の浸水には対応できない。
（２）高さが数ｍ程度の壁体を備える跳ね上げ式の防潮壁を構築するには、出力の大きい駆動装置を使用する必要が生じるため、設備自体が大がかりとなり、施工費用が高くなってしまう。
（３）駆動装置等の定期的なメンテナンスが必要となり、保守費用コストが必要となってしまう。 However, the following problems occur in the conventional flood prevention device.
(1) The flip-up type tide wall cannot be used for flooding on the order of several meters because it only needs to construct a wall of several tens of centimeters.
(2) To construct a flip-up type tide wall with a wall of about several meters in height, it is necessary to use a drive device with a large output, so the equipment itself becomes large and construction costs increase. End up.
(3) Periodic maintenance of the drive unit or the like is necessary, and maintenance cost costs are required.

したがって、本願発明の目的は、施工費用や保守費用を過大にすることなく、浸水時に簡単な作業で防潮機能を発揮することが可能な防潮壁の提供を目的とするものである。   Accordingly, an object of the present invention is to provide a tide wall capable of exhibiting a tide function by a simple operation at the time of flooding without increasing construction costs and maintenance costs.

そこで、本願の第１発明は、互いに複数の開口部を設けてある一組の壁体からなり、壁体間において前記開口部を連通させた状態から、一方の壁体を摺動することにより該開口部を閉塞するよう構成した、スライド型防潮壁を提供するものである。
また、本願の第２発明は、前記一方の壁体は浸水側に配した壁体であり、該一方の壁体は、開口部が互いに連通した状態で他方の壁体に浮設しておき、前記浮設の解除によって、前記一方の壁体が下方に落下し、前記開口部を互いに閉塞し合うことを特徴とする、前記第１発明に記載のスライド型防潮壁を提供するものである。
また、本願の第３発明は前記一方の壁体に設けた開口部の背面側外周に凹溝を設け、該一方の壁体の落下後に、前記凹溝と前記他方の壁体の開口部の縁部とが当接することを特徴とする、前記第２発明に記載のスライド型防潮壁を提供するものである。 Accordingly, the first invention of the present application is composed of a set of wall bodies provided with a plurality of openings, and by sliding one wall body from a state in which the openings are communicated between the wall bodies. A slide-type tide barrier configured to close the opening is provided.
Further, according to a second invention of the present application, the one wall body is a wall body arranged on the water immersion side, and the one wall body is floated on the other wall body in a state where the openings communicate with each other. The slide-type tide wall according to the first aspect of the present invention is characterized in that, by releasing the floating, the one wall body falls down and closes the openings together. .
Further, the third invention of the present application provides a groove on the back side outer periphery of the opening provided in the one wall body, and after the fall of the one wall body, the groove groove and the opening of the other wall body. The slide-type tide barrier according to the second invention is provided, wherein the slide-type tide wall is in contact with an edge.

本願発明によれば、以下の効果のうち、少なくとも何れか一つを得ることができる。
（１）通常時には、各壁体に設けた開口部が互いに連通してある状態を維持するため、通風性、景観性に悪影響を与えない。
（２）浸水時には、一方の壁体の浮設を解除する作業のみで、早期且つ簡易に防潮機能を発揮することができる。
（３）浸水の解消後には、一方の壁体を元の位置に戻す作業のみで通常時への復帰が可能であり、再利用が容易である。
（４）外部動力が不要であり、施工コストや保守費用を節減することができる。
（５）浸水時には、前記背面壁の外周縁部と前面壁の背面側に設けた凹部とが前記水圧によって密に当接するため、壁体の止水性能が向上する。
（６）開口部の数や配置形態を変更することによって、通風性や景観性を簡易に制御できる。 According to the present invention, at least one of the following effects can be obtained.
(1) During normal times, the openings provided in each wall body are maintained in a state where they are in communication with each other.
(2) At the time of flooding, the tide prevention function can be exhibited quickly and easily only by the work of releasing the floating of one wall body.
(3) After the inundation is eliminated, it is possible to return to the normal state only by returning the one wall body to the original position, and reuse is easy.
(4) No external power is required, and construction costs and maintenance costs can be saved.
(5) At the time of flooding, the outer peripheral edge of the back wall and the recess provided on the back side of the front wall are in close contact with each other by the water pressure, so that the water stopping performance of the wall body is improved.
(6) Ventilation and landscape can be easily controlled by changing the number and arrangement of openings.

本発明の防潮壁を示す概略斜視図。The schematic perspective view which shows the tide wall of this invention. 本発明の防潮壁の側断面を示す概略図。Schematic which shows the side cross section of the tide wall of this invention.

各図面を参照しながら、本発明のスライド型防潮壁について説明する。   The slide type tide barrier according to the present invention will be described with reference to the drawings.

＜１＞全体構成
図１は、本発明における防潮壁の概略斜視図であり、図２は防潮壁の側断面を示す概略図である。各図とも（ａ）は通常時の状態を示し、（ｂ）は浸水時の状態を示す。
本実施例における防潮壁は、背面壁１及び前面壁２からなる一組の壁体を少なくとも含む。その他、本実施例における防潮壁は、前記前面壁２の天端に設けた把持具３と、前記一組の壁体を両側から支持するガイドフレーム４と、前記一組の壁体を所定の位置で連結するための支持ピン５と、前記一組の壁体の下方に設けた固定壁６とによって構成する（図１）。 <1> Overall Configuration FIG. 1 is a schematic perspective view of a tide wall in the present invention, and FIG. 2 is a schematic view showing a side cross section of the tide wall. In each figure, (a) shows a normal state, and (b) shows a submerged state.
The tide wall in the present embodiment includes at least a pair of wall bodies including a back wall 1 and a front wall 2. In addition, the tide wall in the present embodiment includes a gripping tool 3 provided at the top end of the front wall 2, a guide frame 4 that supports the set of wall bodies from both sides, and the set of wall bodies in a predetermined manner. It comprises a support pin 5 for connecting in position and a fixed wall 6 provided below the set of wall bodies (FIG. 1).

＜２＞一組の壁体
一組の壁体は、浸水時にのみ防潮機能を発揮するための構造体である。
一組の壁体は、平面方向に重ね合わせた二枚の壁体によって構成する。
本実施例では、前記二枚の壁体のうち、陸上構造物側の壁体を背面壁１、浸水側の壁体を前面壁２と定義する。
背面壁１は前面壁２の摺動長さＬ3分だけ上方に遷移した位置に支持板７によって固定しておき、前面壁２は、背面壁１に重ねつつ上下方向に摺動自在に配置する（図２）。 <2> A set of wall bodies A set of wall bodies is a structure for exhibiting a tide preventing function only at the time of flooding.
One set of wall bodies is constituted by two wall bodies overlapped in the plane direction.
In the present embodiment, of the two wall bodies, a wall body on the land structure side is defined as a back wall 1, and a wall body on the flooded side is defined as a front wall 2.
The rear wall 1 is fixed by a support plate 7 at a position shifted upward by the sliding length L 3 of the front wall 2, and the front wall 2 is arranged so as to be slidable in the vertical direction while overlapping the rear wall 1. (FIG. 2).

＜２．１＞開口部
背面壁１及び前面壁２は、ともに複数の開口部１１，２１を有する（図１）。
各開口部の形状は、円形、多角形など、種々の形状を採用することができる。本実施例では長方形状の開口部を設ける。
各開口部の配置形態は、通風性や景観性を配慮しつつ、壁体の前面又は一部に対して、長手状、千鳥状など、種々の配置形態を採用することができる。本実施例では、開口部を均等に千鳥状に配置してなる。 <2.1> Openings Both the back wall 1 and the front wall 2 have a plurality of openings 11 and 21 (FIG. 1).
Various shapes such as a circle and a polygon can be adopted as the shape of each opening. In this embodiment, a rectangular opening is provided.
The arrangement form of each opening part can employ | adopt various arrangement forms, such as a longitudinal form and a zigzag form, with respect to the front surface or a part of a wall body, considering ventilation and landscape property. In this embodiment, the openings are equally arranged in a staggered pattern.

背面壁１と前面壁２の開口部の形状並びに配置形態は、通常時に視認性及び通風性を確保する観点より、前記背面壁１及び前面壁２を特定の位置で重ねた際に全ての開口部が連通した状態を構築する必要が有るため、同様のものとすることが望ましい。   The shape and arrangement of the openings of the back wall 1 and the front wall 2 are all open when the back wall 1 and the front wall 2 are overlapped at specific positions from the viewpoint of ensuring visibility and ventilation. Since it is necessary to construct a state in which the parts communicate with each other, it is desirable that they be the same.

また、本実施例のように開口部の形状を長方形状とし、該開口部を均等に千鳥状に配置してある場合、浸水時に止水性を確保する観点より、開口部は一方の壁体の移動によって該一方の壁体の開口部が他方の壁体の開口部以外の部分によって十分に閉塞されるよう構成する必要がある。
したがって、前記開口部の縦方向の長さをＬ1、開口部同士の間隔をＬ2、前面壁の摺動長さをＬ3とした場合、下記の式を満たすよう構成することが望ましい（図２）。
式１：Ｌ2＞Ｌ1
式２：Ｌ3＝Ｌ1＋（Ｌ2−Ｌ1）／２ In addition, when the shape of the opening is rectangular as in this embodiment, and the openings are arranged in a staggered manner, the opening is one of the walls from the viewpoint of securing water stoppage during water immersion. It is necessary that the opening portion of the one wall body be sufficiently closed by the movement other than the opening portion of the other wall body.
Therefore, when the length of the opening in the vertical direction is L 1 , the distance between the openings is L 2 , and the sliding length of the front wall is L 3 , it is desirable that the following formula is satisfied ( Figure 2).
Formula 1: L 2 > L 1
Equation 2: L 3 = L 1 + (L 2 -L 1) / 2

＜２．２＞凹溝
前面壁２の背面側の開口部の外周縁部には凹溝２２を設ける（図２）。前記凹溝２２を設けることにより、前面壁２が下方に落下した際には背面壁１の開口部１１の前面側の外周縁部が凹溝２２と対向する位置となる。浸水により前面壁は水圧を受けるため、該外周縁部は凹溝２２に密に当接し、前面壁と背面壁との間の止水性を高めることができる。 <2.2> Groove Grooves 22 are provided in the outer peripheral edge of the opening on the back side of the front wall 2 (FIG. 2). By providing the concave groove 22, when the front wall 2 falls downward, the outer peripheral edge portion on the front surface side of the opening portion 11 of the rear wall 1 becomes a position facing the concave groove 22. Since the front wall is subjected to water pressure due to water immersion, the outer peripheral edge closely contacts the concave groove 22, and the water stoppage between the front wall and the back wall can be increased.

＜３＞把持具
把持具３は、前面壁２の引き上げを支援するための部材である。
把持具３は前面壁２の天端に設け、当該把持具３を介し人力又は外部動力を用いて該前面壁２を上方に持ち上げ易くすることができる。 <3> Gripping Tool The gripping tool 3 is a member for supporting the lifting of the front wall 2.
The gripping tool 3 is provided at the top end of the front wall 2, and the front wall 2 can be easily lifted upward by using human power or external power via the gripping tool 3.

＜４＞ガイドフレーム
ガイドフレーム４は、前記一組の壁体の両側に設け、該一組の壁体を上方から摺動させて所定の位置に収納するための部材である。
ガイドフレーム４は、Ｈ鋼などの周知の部材によって形成することができる。 <4> Guide Frame The guide frame 4 is a member that is provided on both sides of the set of wall bodies and is slid from above to house the set of wall bodies in a predetermined position.
The guide frame 4 can be formed of a known member such as H steel.

＜５＞支持ピン
支持ピン５は、背面壁１に対して前面壁２を所定の位置に位置決めするための部材である。
支持ピン５は、前記前面壁２の開口部２１と背面壁１の開口部１１とが互いに連通してなる空間に横断するように差し込むことで、前面壁２を所定の位置で浮設・支持する。 <5> Support Pin The support pin 5 is a member for positioning the front wall 2 at a predetermined position with respect to the back wall 1.
The support pin 5 is inserted so that the opening 21 of the front wall 2 and the opening 11 of the back wall 1 communicate with each other, thereby floating and supporting the front wall 2 at a predetermined position. To do.

＜６＞固定壁
固定壁６は、景観性や通風性に影響を与えない高さまで設置される常設の構造物である。固定壁６は、配置した土台（図示せず）を介するか、或いは直接杭やアンカー等によって地面に固定し、浸水時の水圧に抵抗可能に構成する。
なお、本発明の防潮壁において、固定壁６は必須の部材ではない。固定壁６を省略する場合には一組の壁体自体を地面に固定するよう構成すれば足りる。 <6> Fixed wall The fixed wall 6 is a permanent structure that is installed up to a height that does not affect the landscape and ventilation. The fixed wall 6 is configured to be capable of resisting water pressure at the time of flooding through a placed base (not shown) or directly fixed to the ground by a pile or an anchor.
In addition, in the tide wall of this invention, the fixed wall 6 is not an essential member. In the case where the fixed wall 6 is omitted, it is sufficient that the pair of wall bodies are configured to be fixed to the ground.

＜７＞使用方法
次に、本実施例に係る防潮壁の使用方法について説明する。
（１）通常時
通常時は、背面壁１の開口部１１と前面壁２の開口部２１とが連通する位置まで前面壁２を上方に持ち上げ、該前面壁２が浮いた状態のまま両開口部１１，２１を横断するように支持ピン５を差し込み、固定する（図１（ａ）、図２（ａ））。 <7> Usage Method Next, a usage method of the tide barrier according to the present embodiment will be described.
(1) Normal time Under normal conditions, the front wall 2 is lifted up to a position where the opening 11 of the back wall 1 and the opening 21 of the front wall 2 communicate with each other, and both openings are left in a state where the front wall 2 is floating. The support pin 5 is inserted and fixed so as to cross the parts 11 and 21 (FIGS. 1A and 2A).

（２）浸水時
津波や高潮などにより浸水が確認された場合には、開口部１１，２１に差し込んである支持ピン５を取り外す。支持ピン５を取り外すと、浮設していた前面壁２が重力によって下方へと落下する。このとき、背面壁１の開口部１１は前面壁２の本体部分によって閉塞され、前面壁２の開口部２１は背面壁１の本体部によって閉塞される（図１（ｂ）、図２（ｂ））。
浸水が進むと、前面壁２は水圧を受け背面側に押し込まれる。このとき、前記背面壁１の外周縁部と前面壁２の背面側に設けた凹部２２とが前記水圧によって密に当接するため、背面壁１と前面壁２との間の止水性能が向上することとなる。 (2) At the time of flooding When the flooding is confirmed by tsunami or storm surge, the support pins 5 inserted into the openings 11 and 21 are removed. When the support pin 5 is removed, the suspended front wall 2 falls downward due to gravity. At this time, the opening portion 11 of the back wall 1 is closed by the main body portion of the front wall 2, and the opening portion 21 of the front wall 2 is closed by the main body portion of the back wall 1 (FIGS. 1B and 2B). )).
As the flooding proceeds, the front wall 2 receives water pressure and is pushed into the back side. At this time, since the outer peripheral edge of the back wall 1 and the recess 22 provided on the back side of the front wall 2 are in close contact with each other by the water pressure, the water stop performance between the back wall 1 and the front wall 2 is improved. Will be.

（３）浸水解消後
浸水が解消した際には、把持具３を介して前面壁２を上方に持ち上げ、該前面２壁が浮いた状態のまま前記開口部１１，２１に支持ピン５を再度差しこんで前面壁２を浮設・固定し、通常状態へと復帰させる（図１（ａ）、図２（ａ））。 (3) After the water has been removed When the water has been removed, the front wall 2 is lifted upward via the gripping tool 3, and the support pins 5 are again attached to the openings 11 and 21 while the front wall 2 is floating. Then, the front wall 2 is floated and fixed and returned to the normal state (FIGS. 1A and 2A).

以上の工程により、浸水の発生時には迅速に防潮機能を発揮することができるとともに、浸水の解消後には、容易に防潮機能を解除して視認性及び通風性を復帰することが可能となる。   Through the above steps, when the inundation occurs, the tide function can be quickly exhibited, and after the inundation is eliminated, the tide function can be easily released to restore visibility and ventilation.

本発明に係るスライド型防潮壁を構成する一組の壁体は、三枚以上の壁体によって構成することもできる。例えば、実施例１に係る前面壁２を横断方向に複数分割し、各分割体の各々を個別に支持ピン５で背面壁１に固定することができる。本実施例によれば、浸水の発生時に下方の分割体から順に支持ピン５を取り外し、浸水の高さに応じて順次防潮機能を発揮させることができるため、必要以上に防潮機能を発揮させることが無い。   The set of walls constituting the slide type tide wall according to the present invention can also be constituted by three or more walls. For example, the front wall 2 according to the first embodiment can be divided into a plurality of parts in the transverse direction, and each of the divided bodies can be individually fixed to the back wall 1 with the support pins 5. According to the present embodiment, when the inundation occurs, the support pins 5 can be removed in order from the lower divided body, and the tide function can be exhibited sequentially in accordance with the height of the inundation. There is no.

本発明に係るスライド型防潮壁を構成する一組の壁体は、背面壁１又は前面壁２の何れか一方を平面方向に摺動させることで、両開口部を閉塞するよう構成してもよい。この場合、一方の壁体の摺動に際し重力を利用することができないことから、重力に抵抗して両壁体を連結するための支持ピン５は不要であり、浸水時には人力又は外部動力によって一方の壁体を摺動させることとなる。   The pair of wall bodies constituting the slide type tide wall according to the present invention may be configured to close both openings by sliding either the back wall 1 or the front wall 2 in the plane direction. Good. In this case, since the gravity cannot be used when sliding one of the walls, the support pin 5 for resisting the gravity and connecting the two walls is not necessary. The wall body is slid.

１ 前面壁
２ 背面壁
３ 把持具
４ ガイドフレーム
５ 支持ピン
６ 固定壁
７ 支持板
１１，２１ 開口部 DESCRIPTION OF SYMBOLS 1 Front wall 2 Back wall 3 Grip tool 4 Guide frame 5 Support pin 6 Fixed wall 7 Support plate 11,21 Opening part

Claims (3)

互いに複数の開口部を設けてある一組の壁体からなり、
壁体間において前記開口部を連通させた状態から、一方の壁体を摺動することにより該開口部を閉塞するよう構成した、スライド型防潮壁。 It consists of a set of walls provided with a plurality of openings,
A slide type tide barrier configured to close the opening by sliding one of the walls from a state in which the opening communicates between the walls. 前記一方の壁体は浸水側に配した壁体であり、該一方の壁体は、開口部が互いに連通した状態で他方の壁体に浮設しておき、前記浮設の解除によって、前記一方の壁体が下方に落下し、前記開口部を互いに閉塞し合うことを特徴とする、請求項１に記載のスライド型防潮壁。 The one wall body is a wall body arranged on the water immersion side, and the one wall body is floated on the other wall body in a state where the openings are in communication with each other, and by releasing the floatation, The slide-type tide wall according to claim 1, wherein one wall body falls downward and closes the openings. 前記一方の壁体に設けた開口部の背面側外周に凹溝を設け、該一方の壁体の落下後に、前記凹溝と前記他方の壁体の開口部の縁部とが当接することを特徴とする、請求項２に記載のスライド型防潮壁。 A groove is provided on the outer periphery on the back side of the opening provided in the one wall body, and the groove is brought into contact with the edge of the opening of the other wall body after the one wall body is dropped. The slide-type tide barrier according to claim 2, characterized in that it is a feature.
JP2009288956A 2009-12-21 2009-12-21 Slide type seawall Expired - Fee Related JP5235012B2 (en)

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