JP2803539B2 - Construction method of double wall underground outer wall - Google Patents
Construction method of double wall underground outer wallInfo
- Publication number
- JP2803539B2 JP2803539B2 JP5307644A JP30764493A JP2803539B2 JP 2803539 B2 JP2803539 B2 JP 2803539B2 JP 5307644 A JP5307644 A JP 5307644A JP 30764493 A JP30764493 A JP 30764493A JP 2803539 B2 JP2803539 B2 JP 2803539B2
- Authority
- JP
- Japan
- Prior art keywords
- wall
- double
- concrete
- projection
- drainage gap
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
- Building Environments (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この発明は内外側壁からなり、間
に排水間隙を設けたコンクリート造の地下外壁二重壁の
施工法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for constructing a double-walled concrete underground outer wall having inner and outer walls and a drainage gap therebetween.
【０００２】[0002]
【従来技術】地下構造物の外壁は外部から漏水があった
場合に備えて、中間に排水間隙（水抜パイプやドレイン
などが付帯した）を内蔵した内外側壁からなる二重壁の
構造をしており、従来は外側壁のコンクリ−トを打設
後、内側壁をコンクリートブロックなどを使用して施工
する方法がとられていた。2. Description of the Related Art The outer wall of an underground structure has a double-wall structure consisting of an inner and outer wall with a built-in drainage gap (including drainage pipes and drains) in the middle in case water leaks from the outside. Conventionally, a method has been adopted in which after the concrete for the outer wall is cast, the inner wall is constructed using a concrete block or the like.
【０００３】すなわち、図３に示すごとく、山止壁１に
沿い鉄筋２を配筋し、型枠板３を組立た後、コンクリー
ト４を打設し、コンクリ−トの強度発現をまち型枠３を
解体し、コンクリート造の外側壁５を構築する。この外
側壁の内側にコンクリートブロックの積み重ねなどによ
って内側壁６をつくり、間に排水間隙７がある地下外壁
二重壁（５＋６）を施工していた。That is, as shown in FIG. 3, a reinforcing bar 2 is laid along a mountain retaining wall 1, a form plate 3 is assembled, concrete 4 is cast, and a concrete form is developed to form a concrete form. 3 is dismantled to construct a concrete outer wall 5. The inner wall 6 is made by stacking concrete blocks inside the outer wall, and the underground outer wall double wall (5 + 6) having the drainage gap 7 between them has been constructed.
【０００４】[0004]
【発明が解決しようとする課題】上記した従来の施工法
では、内側壁を外側壁コンクリートの打設後につくるの
で、型枠の解体、排水間隙部の防水をしたのち、コンク
リートブロック積みをする手順となり、作業が複雑で時
間がかかった。また、内側壁施工後に排水間隙内にこぼ
れたゴミやモルタルなどを回収する方法がなく、水抜パ
イプ等の排水装置を詰まらせる恐れがあった。In the above-mentioned conventional construction method, since the inner wall is formed after casting the outer wall concrete, the procedure for dismantling the formwork, waterproofing the drainage gap, and then stacking the concrete block is performed. It was complicated and time-consuming. In addition, there is no method for collecting dirt, mortar, and the like spilled into the drainage gap after the inner wall is installed, and there is a possibility that a drainage device such as a drain pipe may be clogged.
【０００５】この発明は上記問題点の解決を図ったもの
である。その目的は施工手順を単純化して施工作業の能
率向上を図ることができ、かつ排水機能を損なうことが
ないコンクリート造の地下外壁二重壁の施工法を提案す
ることにある。The present invention has been made to solve the above problems. It is an object of the present invention to propose a method of constructing a concrete underground external double wall which can simplify a construction procedure to improve the efficiency of the construction work and does not impair the drainage function.
【０００６】[0006]
【課題を解決するための手段】この発明は、内外側壁か
らなり、間に排水間隙を設けたコンクリート造の地下外
壁二重壁の施工法において、山止壁１に沿い外側壁５用
の鉄筋２を配筋し、その屋内側に排水間隙７を形成する
ための１００ミリ以上の突出長を有する截頭円錐形の突
起８を片表面に多数突設したスチレン発泡体からなる外
側壁５用の捨型枠板９を前記突起８側の面を屋内側に向
けて建込み、凹凸表面を持ったプラスチックシート類か
らなる薄板１０を前記突起８の先端面に接着し、前記薄
板１０の屋内側に内側壁６用の格子鉄筋１２を配筋し、
基端を前記山止壁１に固着して延びるセパレーター１１
に前記格子鉄筋１２を固定してモルタル１３を吹き付け
て内側壁６を築造し、内側壁６の強度が発現した時点で
前記捨型枠板９の屋外側に外壁コンクリート４を打設し
て外側壁５を築造することを特徴とする。SUMMARY OF THE INVENTION The present invention relates to a method of constructing a double-walled concrete underground outer wall comprising inner and outer walls and having a drainage gap therebetween.
Rebar 2 and form drainage gap 7 on the indoor side
Frusto-conical projection with a projection length of 100 mm or more
Outside made of a styrene foam with a number of protrusions 8 protruding on one surface
The discarded frame plate 9 for the side wall 5 is oriented such that the surface on the side of the protrusion 8 faces the indoor side.
Plastic sheet with uneven surface
A thin plate 10 made of a
A reinforcing bar 12 for the inner wall 6 is arranged on the indoor side of the plate 10,
A separator 11 whose base end is fixed to the mountain retaining wall 1 and extends.
Mortar 13 is sprayed with the grid reinforcement 12 fixed
When the inner wall 6 is built and the strength of the inner wall 6 is developed.
An outer wall concrete 4 is cast on the outdoor side of the discarded frame plate 9.
And the outer wall 5 is constructed .
【０００７】[0007]
【実施例】図１に示す実施例によりこの施工法の工程手
順を説明する。先ず山止壁１に沿い外側壁用の鉄筋２を
配筋し（（ａ）図参照）、その屋内側に片表面に排水間
隙を形成する截頭円錐形の突起８が突設してあるスチレ
ン発泡体からなる外側壁用の捨型枠板９を突起８面を屋
内側となし建込む（（ｂ）図参照）。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The steps of this construction method will be described with reference to an embodiment shown in FIG. First, a reinforcing bar 2 for an outer wall is arranged along a mountain retaining wall 1 (see FIG. 1A), and a frusto-conical projection 8 for forming a drainage gap is formed on one surface of the indoor side. A cut-out frame plate 9 made of styrene foam for the outer wall is built with the projections 8 facing the indoor side (see FIG. 8B).
【０００８】この捨型枠板９の突起８面に薄板１０を接
着して取付け、その表面側に内側壁用の格子鉄筋１２を
配筋し、山止壁１に基端を固着して延びたセパレーター
１１に固定し、モルタル１３を吹きつけて内側壁６を築
造する（（Ｃ）図参照）。内側壁６の強度が発現した時
点をまち捨型枠板９の屋外側にコンクリート４を打設し
て外側壁５を築造し、内外側壁間に突起８により形成さ
れた排水間隙７がある地下外壁二重壁を施工する。[0008] A thin plate 10 is attached to the surface of the projection 8 of the discarded frame plate 9 by bonding, a lattice reinforcing bar 12 for the inner wall is arranged on the surface side, and the base end is fixed to the retaining wall 1 to extend. Then, the inner wall 6 is constructed by spraying a mortar 13 onto the separator 11 (see FIG. 7C). When the strength of the inner wall 6 has developed, the concrete 4 is cast on the outdoor side of the mold frame 9 to build the outer wall 5, and the drainage gap 7 formed by the projection 8 between the inner and outer walls is underground. Construct a double outer wall.
【０００９】図２はこの実施例の詳細図である。捨型枠
板９を山止壁１から延びたセパレーター１１に、ジョイ
ナー１４で挟み固定するとともに、二層一体に組み立て
てある格子鉄筋１２をセパレーター１１の先端部に座金
１５を用い締めつけ固定してある。また、捨型枠板９端
面間は接着剤で接着して密に閉塞してある。薄板１０と
して２層のフイルム間に多数の小気孔があるバブル封入
シートを用いた。FIG. 2 is a detailed view of this embodiment. The discarded frame plate 9 is sandwiched and fixed to the separator 11 extending from the mountain retaining wall 1 by the joiner 14, and the lattice reinforcing bar 12 assembled in two layers is fastened and fixed to the tip of the separator 11 by using the washer 15. is there. The gap between the end faces of the discarded frame plate 9 is tightly closed by bonding with an adhesive. As the thin plate 10, a bubble enclosing sheet having many small pores between two layers of films was used.
【００１０】モルタル１３の吹きつけは下層の荒吹きモ
ルタル１３−１、中吹モルタル１３−２、上吹モルタル
１３−３の３層に分けおこなった。荒吹モルタル１３−
１は凹凸があるバブル封入シートの薄板１０によく付着
しダレ落ちが防止でき、モルタルが裏面に漏れ出ること
も無かった。上吹モルタル１３−３は金ゴテ均しにより
仕上げた。The mortar 13 was sprayed into three layers, ie, a rough mortar 13-1, a middle mortar 13-2, and an upper mortar 13-3. Arabuki mortar 13-
No. 1 adhered well to the thin plate 10 of the bubble-encapsulated sheet having irregularities, dripping could be prevented, and mortar did not leak to the back surface. The upper blow mortar 13-3 was finished by ironing.
【００１１】外側壁５のコンクリート打設は、内側壁の
強度発現をまっておこなうが、実験により確認したとこ
ろ、上吹モルタル施工後３日で十分な強度を有すること
が分かった。The concrete placement of the outer wall 5 is carried out by developing the strength of the inner wall, but it has been confirmed by an experiment that it has sufficient strength three days after the construction of the upper blow mortar.
【００１２】この発明では、排水間隙７の幅を、長期的
なレイタンスの除去作業等を考慮して１００ミリ以上と
する。なお図２において１６は水抜きパイプである。In the present invention , the width of the drainage gap 7 is set to 100 mm or more in consideration of a long-term latence removal operation and the like.
I do. In FIG. 2, reference numeral 16 denotes a drain pipe.
【００１３】上記実施例では、バブル封入シートを薄板
１０に用い、モルタルの吹きつけにより内側壁を施工し
たが、バブル封入シートに限定する必要はなく、凹凸表
面をもったプラスチックシート類を用いることができ
る。モルタルの吹きつけに耐える強度があり、凹凸表面
をもったプラスチックシート類は、モルタルのダレ落ち
防止、裏面への漏出防止および外側壁からの漏水の内側
壁への浸入を二次的に防止するうえで好適である。In the above-described embodiment, the bubble enclosing sheet is used for the thin plate 10 and the inner wall is formed by spraying mortar. However, the present invention is not limited to the bubble enclosing sheet.
Plastic sheet with surface can be used
You. There are spray withstand strength of mortar, plastic sheets having an uneven surface, sagging drop prevention mortar, preventing the entry of the leakage of the inner wall of the leakage prevention and outer wall on the back secondary to It is suitable for doing so.
【００１４】[0014]
【発明の効果】この発明は以上の通りであり、次の効果
を奏する。外側壁の築造に型枠の解体作業がなくな
り、内側壁の築造にブロック積みが不要となり、施工作
業の能率を著しく向上できる。排水間隙にゴミ等が浸
入しがたく、排水機能を確実に発揮できる。１００ミ
リ以上の突出長を有する截頭円錐形の突起多数突設した
スチレン発泡体からなる外側壁用の捨型枠板を用いたこ
とで、従来のブロック積みの地下外壁二重壁と同程度の
排水間隙の幅を確保することができる。また格子鉄筋
を埋設して内側壁を補強し、内側壁に突起を当接させた
捨型枠板をセパレーターで格子鉄筋に連結、支持する構
造となるため、内外側壁と排水間隙が一体となった地下
外壁二重壁を精度高く、能率よく構築することができ
る。 As described above, the present invention has the following effects. There is no need to disassemble the formwork for the construction of the outer wall, and block building is not required for the construction of the inner wall, so that the efficiency of the construction work can be significantly improved. It is difficult for dust and the like to enter the drainage gap, and the drainage function can be reliably exhibited. 100 mi
Many frusto-conical projections with protruding lengths longer than
The use of a discarded frame for the outer wall made of styrene foam
With the same level as the conventional double-walled underground wall with block
The width of the drainage gap can be secured. Also grid reinforcement
Was buried to reinforce the inner wall, and the projection was brought into contact with the inner wall
A structure to connect and support the discarded form plate to the grid reinforcement with a separator
Underground where the inner and outer walls and drainage gap are integrated
External wall Double wall can be constructed with high accuracy and efficiency
You.
【図１】この施工法を工程順に示す断面図である。FIG. 1 is a sectional view showing this construction method in the order of steps.
【図２】この施工法で築造した地下外壁二重壁の断面図
である。FIG. 2 is a cross-sectional view of a double wall of an underground outer wall constructed by this construction method.
【図３】従来の施工法を工程順に示す断面図である。FIG. 3 is a sectional view showing a conventional construction method in the order of steps.
１…山止壁、２…鉄筋、３…型枠板、４…コンクリー
ト、５…外側壁、６…内側壁、７…排水間隙、８…突
起、９…捨型枠板、１０…薄板、１１…セパレーター、
１２…格子鉄筋、１３…モルタル、１４…ジョイナー、
１５…座金、１６…水抜きパイプDESCRIPTION OF SYMBOLS 1 ... Mountain retaining wall, 2 ... Reinforcing bar, 3 ... Form plate, 4 ... Concrete, 5 ... Outer wall, 6 ... Inner wall, 7 ... Drainage gap, 8 ... Projection, 9 ... Discarded form plate, 10 ... Thin plate, 11 ... separator,
12 ... lattice reinforcement, 13 ... mortar, 14 ... joiner,
15: Washer, 16: Drain pipe
フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) E02D 29/00Continuation of front page (58) Field surveyed (Int.Cl. 6 , DB name) E02D 29/00
Claims (1)
たコンクリート造の地下外壁二重壁の施工法において、
山止壁１に沿い外側壁（５）用の鉄筋（２）を配筋し、
その屋内側に排水間隙（７）を形成するための１００ミ
リ以上の突出長を有する截頭円錐形の突起（８）を片表
面に多数突設したスチレン発泡体からなる外側壁（５）
用の捨型枠板（９）を前記突起（８）側の面を屋内側に
向けて建込み、凹凸表面を持ったプラスチックシート類
からなる薄板（１０）を前記突起（８）の先端面に接着
し、前記薄板（１０）の屋内側に内側壁（６）用の格子
鉄筋（１２）を配筋し、基端を前記山止壁（１）に固着
して延びるセパレーター（１１）に前記格子鉄筋（１
２）を固定してモルタル（１３）を吹き付けて内側壁
（６）を築造し、内側壁（６）の強度が発現した時点で
前記捨型枠板（９）の屋外側に外壁コンクリート（４）
を打設して外側壁（５）を築造することを特徴とする地
下外壁二重壁の施工法。1. A method of constructing a double-walled concrete underground outer wall comprising inner and outer walls and having a drainage gap therebetween,
Reinforcing bar (2) for outer wall (5) along mountain retaining wall 1,
100 mm for forming a drainage gap (7) on the indoor side
Frustoconical projections (8) with a projection length of more than
Outer wall made of styrene foam protruding from the surface (5)
The side of the projection (8) to the indoor side
Plastic sheets with uneven surfaces
A thin plate (10) made of is adhered to the tip surface of the projection (8).
And a grid for the inner wall (6) on the indoor side of the thin plate (10).
Reinforcement (12) is arranged, and the base end is fixed to the retaining wall (1)
The grid reinforcement (1)
2) Fix and spray mortar (13) on inner wall
When (6) is built and the strength of the inner wall (6) is developed
Outer wall concrete outdoors side of the捨型frame plate (9) (4)
A method of constructing a double wall underground outer wall, wherein the outer wall (5) is constructed by casting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5307644A JP2803539B2 (en) | 1993-12-08 | 1993-12-08 | Construction method of double wall underground outer wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5307644A JP2803539B2 (en) | 1993-12-08 | 1993-12-08 | Construction method of double wall underground outer wall |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07158086A JPH07158086A (en) | 1995-06-20 |
| JP2803539B2 true JP2803539B2 (en) | 1998-09-24 |
Family
ID=17971525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5307644A Expired - Fee Related JP2803539B2 (en) | 1993-12-08 | 1993-12-08 | Construction method of double wall underground outer wall |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2803539B2 (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03253623A (en) * | 1990-03-02 | 1991-11-12 | Toyo Bussan Kk | Construction of three-dimensional lattice with water conveyance layer and underground outer wall |
| JPH0470467A (en) * | 1990-07-10 | 1992-03-05 | Shimizu Corp | Water permeable formwork |
| JP2735680B2 (en) * | 1990-07-31 | 1998-04-02 | 株式会社竹中工務店 | Underground double wall |
| JP2518112Y2 (en) * | 1991-09-17 | 1996-11-20 | 株式会社トクヤマ | Spring treatment sheet and spring treatment interior material |
-
1993
- 1993-12-08 JP JP5307644A patent/JP2803539B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07158086A (en) | 1995-06-20 |
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| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19980616 |
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| LAPS | Cancellation because of no payment of annual fees |