JP3926729B2

JP3926729B2 - Retaining wall and method of forming retaining wall

Info

Publication number: JP3926729B2
Application number: JP2002326404A
Authority: JP
Inventors: 神秀松林
Original assignee: Goto Concrete Co Ltd
Current assignee: Goto Concrete Co Ltd
Priority date: 2002-11-11
Filing date: 2002-11-11
Publication date: 2007-06-06
Anticipated expiration: 2022-11-11
Also published as: JP2004162281A

Description

【０００１】
【発明の属する技術分野】
本発明は、例えば、急勾配の傾斜を有した擁壁を構築するに際し、該急勾配の擁壁を耐久性を保持して形成することが出来る擁壁及び擁壁の形成方法に関するものである。
【従来の技術】
従来、例えばコンクリート製品からなる擁壁ユニット部材２０を組み立て、急勾配の擁壁を構築するには、図３及び図４から理解されるように前記擁壁ユニット部材２０を上下方向に重ね合わせ、かつそれらの背面に長尺状のアンカー部材２１を取り付け、その後、各擁壁ユニット部材２０の背面に盛り土することにより擁壁を形成していた（例えば特許文献１参照）。
【０００２】
【特許文献１】
特開平９−１７７１０３号公報（図１及び図２）
【発明が解決しようとする課題】
しかしながら、前記従来の擁壁であると、長年の使用により盛り土の部分が沈下することがあり、その結果その盛り土の沈下に引きずられて擁壁ユニット部材２０が積み重ねられて形成された擁壁からずれてはみ出したり、外れたりして前記擁壁が破壊することがあった。
【０００３】
かくして、本発明は前記従来の課題に対処すべく創案されたものであって、擁壁の構築に際し、長年の使用によって、たとえ擁壁ユニット部材背面の盛り土部が沈下したとしても、擁壁ユニット部材部がそれに引っ張られてずれてはみ出したり、外れたりすることのなく、擁壁ユニット部材が破壊することのない擁壁及び擁壁の形成方法を提供することを目的とするものである。
【課題を解決するための手段】
本発明による擁壁及び擁壁の形成方法は、
平板状の略方形状をなし、表面部を有する擁壁形成部と、該擁壁形成部の背面から後方に向けて直交方向に張り出す棒状のアンカー部と、を備え、前記擁壁形成部の下端面には表面側から厚み方向中間部にかけて直方体状の切り欠き条部が長手方向に形成された擁壁ユニット部材を有してなり、
１段目に前記擁壁ユニット部材を敷設すると共に、該１段目擁壁ユニット部材の背面側に前記擁壁ユニット部材の高さと略同等の高さに盛り土して第１段擁壁部を形成し、
前記敷設した１段目の擁壁ユニット部材の上方には、２段目の擁壁ユニット部材を、前記２段目擁壁ユニット部材における擁壁形成部の切り欠き条部が前記１段目の擁壁ユニット部材における擁壁形成部上端面と対向する位置で、かつ厚み方向中間部に形成された前記切り欠き条部の壁面が前記１段目の擁壁ユニット部材における擁壁形成部背面側上端部と略同一線上に位置するよう後方にずらして配置し、２段目擁壁ユニット部材の背面側に前記擁壁ユニット部材の高さと略同等の高さに盛り土して第２段擁壁部を形成し、
第３段擁壁部以降の擁壁部形成は順次前記第２段擁壁部の形成と同様に形成したことを特徴とし、
または、
平板状の略方形状をなし、表面部を有する擁壁形成部と、該擁壁形成部の背面から後方に向けて直交方向に張り出す棒状のアンカー部と、を備え、前記擁壁形成部の下端面には表面側から厚み方向中間部にかけて直方体状の切り欠き条部が長手方向に形成された擁壁ユニット部材を有してなり、
１段目に前記擁壁ユニット部材を敷設すると共に、該１段目擁壁ユニット部材の背面側に前記擁壁ユニット部材の高さと略同等の高さに盛り土して第１段擁壁部を形成し、
前記敷設した１段目の擁壁ユニット部材の上方には、２段目の擁壁ユニット部材を、前記２段目擁壁ユニット部材における擁壁形成部の切り欠き条部が前記１段目の擁壁ユニット部材における擁壁形成部上端面と対向する位置で、かつ厚み方向中間部に形成された前記切り欠き条部の壁面が前記１段目の擁壁ユニット部材における擁壁形成部背面側上端部と略同一線上に位置するよう後方にずらして配置し、２段目擁壁ユニット部材の背面側に前記擁壁ユニット部材の高さと略同等の高さに盛り土して第２段擁壁部を形成し、
第３段擁壁部以降の擁壁部形成は順次前記第２段擁壁部の形成と同様に形成したことを特徴とするものである。
【０００４】
【発明の実施の形態】
以下、図に基づいて本発明に係る擁壁及び擁壁の形成方法について説明する。
【０００５】
図において符号１は擁壁ユニット部材を示す。
【０００６】
該擁壁ユニット部材１は、通常平板状の略方形状をなしており、表面部２に化粧部を有する擁壁形成部３と、該擁壁形成部３の背面から後方に向けて直交方向に張り出す棒状のアンカー部４とを備えて構成されている。
【０００７】
ここで、前記擁壁形成部３の表面部２は一般に例えば積み石ブロック等における装飾された化粧部を模して形成される。しかし、表面部２は何ら装飾されていない平坦面として形成しても構わない。
【０００８】
該表面部２の形成方法については何ら限定されるものではないが、一般には底型枠に前記例えば積み石ブロックの表面部２をあしらった模様を有する型枠を使用し、その底型枠の周囲を各側型枠で覆い、該型枠内にコンクリートを打設して形成される。すなわち、擁壁形成部３の形成と同時に化粧部も形成されるものとされている。
【０００９】
また前記棒状のアンカー部４の形成については、前記擁壁形成部３と一体に形成しても構わないし、またアンカー部４につき別体に形成し、使用時に双方を連結して形成しても構わないものである。
【００１０】
しかして、平板状の略方形状をなす擁壁形成部３と、その背面に後方に張り出す様形成されたアンカー部４とにより擁壁ユニット部材１は形成され、これらは型枠内にコンクリートを充填し、かつ所要時間経過後に脱型して大量に形成することが出来る。
【００１１】
さらに、本発明による擁壁ユニット部材１における前記擁壁形成部３の下端面には化粧部が設けられている表面側から厚み方向中間部にかけて直方体状の切り欠き条部５が長手方向に向かって形成されている。そして、この切り欠き条部５が本発明において非常に重要な役割を果たす。
しかして、本発明による擁壁の形成方法につき述べると、まず前記した擁壁ユニット部材１を擁壁の形成箇所に立設、敷設して第１段擁壁部６を形成する。
【００１２】
すなわち、擁壁ユニット部材１を図１に示すようにして敷設した後、その背面側を前記擁壁ユニット部材１の高さと略同等の高さに盛り土して第１段擁壁部６を形成するのである。
【００１３】
次いで、前記敷設した１段目の擁壁ユニット部材１の上方に、２段目の擁壁ユニット部材１を、前記２段目擁壁ユニット部材１における擁壁形成部３の切り欠き条部５が前記１段目の擁壁ユニット部材１における擁壁形成部３上端面と対向する位置になるように配置する。
【００１４】
図１を参照して詳細にその配置位置を説明すると、２段目の擁壁ユニット部材１の下端面においてその２段目の擁壁ユニット部材１の化粧部が形成された表面側から前記２段目擁壁ユニット部材１の厚み方向中間部にかけて形成された前記切り欠き条部５の壁面７が前記１段目の擁壁ユニット部材１における擁壁形成部３背面側上端部８と略同一線上に位置するように２段目の擁壁ユニット部材１を後方にずらして配置するのである。
【００１５】
そして、２段目擁壁ユニット部材１の背面側に前記擁壁ユニット部材１の高さと略同等の高さに盛り土して第２段擁壁部９を形成する。
【００１６】
さらに、第３段擁壁部１０、第４段擁壁部１１、第５段擁壁部１２、第６段擁壁部１３、第７段擁壁部１４及び第８段擁壁部１５の擁壁部形成は順次前記第２段擁壁部９の形成と同様に形成するものとする。
【００１７】
この様に形成された擁壁は長年の年月が経過しても、積み上げて敷設した擁壁ユニット部材１がずれたりあるいは積み上げられた状態から外れたりすることがない。
【００１８】
すなわち、たとえ盛り土部が沈下したとしても、積み上げられた各擁壁ユニット部材１は上下方向に各々の端面を接触させて積み上げ敷設されてはおらず、擁壁ユニット部材１の切り欠き条部６の高さ分だけ離して積み上げ敷設されている。よって、前記盛り土部の沈下があっても前記切り欠き条部６の高さ分だけ各擁壁ユニット部材１の接触によるずれあるいは外れが容認され、敷設された擁壁ユニット部材１が崩れるおそれがないのである。
【発明の効果】
かくして本発明は以上の構成よりなる。
【００１９】
そして、本発明による擁壁及び擁壁の形成方法であれば、擁壁の構築に際し、長年の使用によって、たとえ擁壁ユニット部材背面の盛り土部が沈下したとしても、擁壁ユニット部材部がそれに引っ張られてずれてはみ出したり、外れたりすることのないとの優れた効果を奏する。
【図面の簡単な説明】
【図１】本発明による擁壁の構成を説明する構成説明図である。
【図２】本発明による擁壁の構成を説明する正面図である。
【図３】本発明による擁壁の構成を拡大して説明する構成説明図である。
【図４】従来の擁壁の構成を説明する説明図（その１）である。
【図５】従来の擁壁の構成を説明する説明図（その２）である。
【図６】従来の擁壁の構成を説明する説明図（その３）である。
【符号の説明】
１擁壁ユニット部材
２表面部
３擁壁形成部
４アンカー部
５切り欠き条部
６第１段擁壁部
７切り欠き条部の壁面
８擁壁ユニット部材の背面側上端部
９第２段擁壁部
１０第３段擁壁部
１１第４段擁壁部
１２第５段擁壁部
１３第６段擁壁部
１４第７段擁壁部
１５第８段擁壁部
２０擁壁ユニット部材
２１アンカー部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a retaining wall and a method for forming a retaining wall that can form a retaining wall having a steep slope while maintaining durability, for example, when a retaining wall having a steep slope is constructed. .
[Prior art]
Conventionally, in order to assemble the retaining wall unit member 20 made of, for example, a concrete product and construct a steep retaining wall, the retaining wall unit member 20 is overlapped in the vertical direction as understood from FIGS. 3 and 4. And the elongate anchor member 21 was attached to those back surfaces, and the retaining wall was formed by embedding on the back surface of each retaining wall unit member 20 after that (for example, refer patent document 1).
[0002]
[Patent Document 1]
JP-A-9-177103 (FIGS. 1 and 2)
[Problems to be solved by the invention]
However, in the case of the conventional retaining wall, the portion of the embankment may sink due to long-term use, and as a result, the retaining wall unit member 20 is stacked by being dragged by the embedding settlement. In some cases, the retaining wall may be broken by protruding or coming off.
[0003]
Thus, the present invention was devised to address the above-described conventional problems, and even when the embedding portion of the rear surface of the retaining wall unit member sinks due to many years of use in the construction of the retaining wall, the retaining wall unit It is an object of the present invention to provide a retaining wall and a retaining wall forming method in which the retaining wall unit member is not destroyed without causing the member portion to be pulled and displaced and pulled out.
[Means for Solving the Problems]
The retaining wall and the method of forming the retaining wall according to the present invention include:
A retaining wall forming portion having a flat plate-like substantially square shape and having a surface portion, and a rod-shaped anchor portion projecting in the orthogonal direction toward the rear from the back surface of the retaining wall forming portion. The lower end surface of the has a retaining wall unit member in which a rectangular parallelepiped cutout is formed in the longitudinal direction from the surface side to the middle in the thickness direction,
The retaining wall unit member is laid on the first stage, and the first stage retaining wall part is formed on the back side of the first stage retaining wall unit member to a height substantially equal to the height of the retaining wall unit member. ,
Above the laid first-stage retaining wall unit member, a second-stage retaining wall unit member is disposed, and a notch portion of the retaining wall forming portion in the second-stage retaining wall unit member is disposed on the first-stage retaining wall unit member. The wall surface of the notched strip portion formed at the intermediate portion in the thickness direction at a position facing the upper end surface of the retaining wall forming portion in the retaining wall unit member is the rear surface side of the retaining wall forming portion in the first-stage retaining wall unit member The second stage retaining wall part is arranged so as to be positioned rearward so as to be positioned substantially on the same line as the upper end part, and the second stage retaining wall part is filled with a height substantially equal to the height of the retaining wall unit member on the back side of the second stage retaining wall unit member. Forming,
The retaining wall part formation after the third stage retaining wall part is formed in the same manner as the formation of the second stage retaining wall part,
Or
A retaining wall forming portion having a flat plate-like substantially square shape and having a surface portion, and a rod-shaped anchor portion projecting in the orthogonal direction toward the rear from the back surface of the retaining wall forming portion. The lower end surface of the has a retaining wall unit member in which a rectangular parallelepiped cutout is formed in the longitudinal direction from the surface side to the middle in the thickness direction,
The retaining wall unit member is laid on the first stage, and the first stage retaining wall part is formed on the back side of the first stage retaining wall unit member to a height substantially equal to the height of the retaining wall unit member. ,
Above the laid first-stage retaining wall unit member, a second-stage retaining wall unit member is disposed, and a notch portion of the retaining wall forming portion in the second-stage retaining wall unit member is disposed on the first-stage retaining wall unit member. The wall surface of the notched strip portion formed at the intermediate portion in the thickness direction at a position facing the upper end surface of the retaining wall forming portion in the retaining wall unit member is the rear surface side of the retaining wall forming portion in the first-stage retaining wall unit member The second stage retaining wall part is arranged so as to be positioned rearward so as to be positioned substantially on the same line as the upper end part, and the second stage retaining wall part is filled with a height substantially equal to the height of the retaining wall unit member on the back side of the second stage retaining wall unit member. Forming,
The formation of the retaining wall part after the third stage retaining wall part is characterized in that it is formed in the same manner as the formation of the second stage retaining wall part.
[0004]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the retaining wall and the method for forming the retaining wall according to the present invention will be described with reference to the drawings.
[0005]
In the figure, reference numeral 1 denotes a retaining wall unit member.
[0006]
The retaining wall unit member 1 has a generally flat plate-like substantially rectangular shape, a retaining wall forming portion 3 having a decorative portion on the surface portion 2, and an orthogonal direction from the back to the rear of the retaining wall forming portion 3. And a rod-shaped anchor portion 4 projecting over.
[0007]
Here, the surface portion 2 of the retaining wall forming portion 3 is generally formed by imitating a decorative decorative portion such as a stone block. However, the surface portion 2 may be formed as a flat surface that is not decorated at all.
[0008]
The method of forming the surface portion 2 is not limited in any way, but generally, a bottom formwork is used which has a pattern having the surface portion 2 of the above-described stone block, for example. It is formed by covering the periphery with each side formwork and placing concrete in the formwork. That is, the decorative part is formed simultaneously with the formation of the retaining wall forming part 3.
[0009]
The rod-shaped anchor part 4 may be formed integrally with the retaining wall forming part 3 or may be formed separately from the anchor part 4 and connected to each other when used. It doesn't matter.
[0010]
Thus, the retaining wall unit member 1 is formed by the retaining wall forming portion 3 having a substantially flat plate shape and the anchor portion 4 formed so as to project rearward on the back surface thereof. And can be removed from the mold after a lapse of time to form a large amount.
[0011]
Furthermore, a rectangular parallelepiped cutout portion 5 extends in the longitudinal direction from the surface side where the decorative portion is provided to the middle portion in the thickness direction on the lower end surface of the retaining wall forming portion 3 in the retaining wall unit member 1 according to the present invention. Is formed. And this notch strip part 5 plays a very important role in the present invention.
Accordingly, the retaining wall forming method according to the present invention will be described. First, the retaining wall unit member 1 described above is erected and laid at the retaining wall forming portion to form the first stage retaining wall portion 6.
[0012]
That is, after the retaining wall unit member 1 is laid as shown in FIG. 1, the first step retaining wall portion 6 is formed by embedding the back side of the retaining wall unit member 1 at a height substantially equal to the height of the retaining wall unit member 1. is there.
[0013]
Next, the second-stage retaining wall unit member 1 is disposed above the laid first-stage retaining wall unit member 1, and the notch portion 5 of the retaining wall forming portion 3 in the second-stage retaining wall unit member 1 is disposed. Is arranged so as to face the upper end surface of the retaining wall forming portion 3 in the first-stage retaining wall unit member 1.
[0014]
The arrangement position will be described in detail with reference to FIG. 1. From the surface side where the decorative portion of the second-stage retaining wall unit member 1 is formed on the lower end surface of the second-stage retaining wall unit member 1, the 2 A wall surface 7 of the notched strip portion 5 formed over the middle portion in the thickness direction of the step retaining wall unit member 1 is substantially the same as the rear wall side upper end 8 of the retaining wall forming portion 3 in the first step retaining wall unit member 1. The second-stage retaining wall unit member 1 is shifted rearward so as to be positioned on the line.
[0015]
Then, the second-stage retaining wall portion 9 is formed on the back side of the second-stage retaining wall unit member 1 by embedding to a height substantially equal to the height of the retaining wall unit member 1.
[0016]
Further, the third-stage retaining wall section 10, the fourth-stage retaining wall section 11, the fifth-stage retaining wall section 12, the sixth-stage retaining wall section 13, the seventh-stage retaining wall section 14 and the eighth-stage retaining wall section 15 are formed in order with the second-stage retaining wall section 9 described above. It shall be formed similarly to the formation of
[0017]
Even if the retaining wall formed in this way passes through many years, the retaining wall unit member 1 piled up and laid does not shift or deviate from the stacked state.
[0018]
That is, even if the embankment portion sinks, the stacked retaining wall unit members 1 that are stacked are not stacked and laid in contact with their respective end surfaces in the vertical direction, and the notch portions 6 of the retaining wall unit member 1 are not Stacked and laid apart by the height. Therefore, even if the embankment portion is subsidized, a displacement or detachment due to the contact of each retaining wall unit member 1 is allowed by the height of the notch strip portion 6, and the laid retaining wall unit member 1 may collapse. There is no.
【The invention's effect】
Thus, the present invention has the above configuration.
[0019]
And, if the retaining wall and the method for forming the retaining wall according to the present invention are used, even if the embankment part on the back of the retaining wall unit member sinks due to the use for many years, It has an excellent effect that it is not pulled out and does not protrude or come off.
[Brief description of the drawings]
FIG. 1 is a configuration explanatory diagram illustrating a configuration of a retaining wall according to the present invention.
FIG. 2 is a front view illustrating the configuration of a retaining wall according to the present invention.
FIG. 3 is an explanatory diagram illustrating an enlarged configuration of a retaining wall according to the present invention.
FIG. 4 is an explanatory diagram (part 1) illustrating a configuration of a conventional retaining wall.
FIG. 5 is an explanatory diagram (part 2) illustrating the configuration of a conventional retaining wall.
FIG. 6 is an explanatory diagram (part 3) illustrating the configuration of a conventional retaining wall.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Retaining wall unit member 2 Surface part 3 Retaining wall formation part 4 Anchor part 5 Notch strip part 6 First step retaining wall part 7 Wall surface 8 of notch strip part Back side upper end part 9 Retaining wall unit member Second stage retaining wall part 10 3rd stage retaining wall part 11 4th stage retaining wall part 12 5th stage retaining wall part 13 6th stage retaining wall part 14 7th stage retaining wall part 15 8th stage retaining wall part 20 Retaining wall unit member 21 Anchor part

Claims

A retaining wall forming portion having a flat plate-like substantially square shape and having a surface portion, and a rod-shaped anchor portion projecting in the orthogonal direction toward the rear from the back surface of the retaining wall forming portion. The lower end surface of the has a retaining wall unit member in which a rectangular parallelepiped cutout is formed in the longitudinal direction from the surface side to the middle in the thickness direction,
The retaining wall unit member is laid on the first stage, and the first stage retaining wall part is formed on the back side of the first stage retaining wall unit member to a height substantially equal to the height of the retaining wall unit member. ,
Above the laid first-stage retaining wall unit member, a second-stage retaining wall unit member is disposed, and a notch portion of the retaining wall forming portion in the second-stage retaining wall unit member is disposed on the first-stage retaining wall unit member. The wall surface of the notched strip portion formed at the intermediate portion in the thickness direction at a position facing the upper end surface of the retaining wall forming portion in the retaining wall unit member is the rear surface side of the retaining wall forming portion in the first-stage retaining wall unit member The second stage retaining wall part is arranged so as to be located rearward so as to be positioned substantially on the same line as the upper end part, and the second stage retaining wall part is filled on the back side of the second stage retaining wall unit member to a height substantially equal to the height of the retaining wall unit member. Forming,
Retaining wall formation after the 3rd stage retaining wall part was formed sequentially like formation of the 2nd stage retaining wall part.

A retaining wall forming portion having a flat plate-like substantially square shape and having a surface portion, and a rod-shaped anchor portion projecting in the orthogonal direction toward the rear from the back surface of the retaining wall forming portion. The lower end surface of the has a retaining wall unit member in which a rectangular parallelepiped cutout is formed in the longitudinal direction from the surface side to the middle in the thickness direction,
The retaining wall unit member is laid on the first stage, and the first stage retaining wall part is formed on the back side of the first stage retaining wall unit member to a height substantially equal to the height of the retaining wall unit member. ,
Above the laid first-stage retaining wall unit member, a second-stage retaining wall unit member is disposed, and a notch portion of the retaining wall forming portion in the second-stage retaining wall unit member is disposed on the first-stage retaining wall unit member. The wall surface of the notched strip portion formed at the intermediate portion in the thickness direction at a position facing the upper end surface of the retaining wall forming portion in the retaining wall unit member is the rear surface side of the retaining wall forming portion in the first-stage retaining wall unit member The second stage retaining wall part is arranged so as to be located rearward so as to be positioned substantially on the same line as the upper end part, and the second stage retaining wall part is filled on the back side of the second stage retaining wall unit member to a height substantially equal to the height of the retaining wall unit member. Forming,
Retaining wall formation after the third step retaining wall is formed in the same manner as the formation of the second step retaining wall.