JP3148093U

JP3148093U - Concrete formwork

Info

Publication number: JP3148093U
Application number: JP2008008051U
Authority: JP
Inventors: 友紀宇治田; 尊石川
Original assignee: 株式会社サンゴマム; 株式会社ダイヤ・プロフェッショナル・ジャパン
Priority date: 2008-11-17
Filing date: 2008-11-17
Publication date: 2009-01-29
Anticipated expiration: 2018-11-17

Abstract

【課題】軽量且つ安価で、しかも環境に優しい古紙製の堰板を用いつつ、堰板の表裏面の切替作業が容易なコンクリート型枠を提供する。【解決手段】略平板状の堰板２と、角形断面の複数の内バタ材４と、堰板２のコンクリート打設側とは反対側の背面側に設けられ、内バタ材４の少なくとも両端部を着脱自在に保持して、内バタ材４の一側面を堰板２の背面に密接配置させるとともに、複数の内バタ材４を相互に間隔をあけて略平行に堰板２の背面側に固定する固定金具５とを備えた。【選択図】図１Provided is a concrete formwork that is easy to switch between the front and back surfaces of a dam plate while using a lightweight, inexpensive, and environmentally friendly waste paper dam plate. SOLUTION: A substantially flat weir plate 2, a plurality of rectangular inner cross-batter members 4, and a back side of the weir plate 2 opposite to the concrete placement side are provided, and at least both ends of the inner butter member 4 are provided. Is held in a detachable manner so that one side surface of the inner butter material 4 is closely arranged on the back surface of the dam plate 2, and a plurality of inner butter materials 4 are spaced apart from each other and substantially parallel to the back surface side of the dam plate 2. And a fixing metal fitting 5 to be fixed to. [Selection] Figure 1

Description

本考案は、古紙製の堰板を用いた型枠に好適なコンクリート型枠に関するものである。 The present invention relates to a concrete formwork suitable for a formwork using a waste paper weir plate.

コンクリート型枠として、平板状の堰板と、堰板の背面側に設けた枠状の補強フレームとを備え、補強フレームの背面側に丸形や角形の鋼管などからなるバタ材を配置して、打設したコンクリート圧を補強フレーム及びバタ材で受け止めて、堰板が撓まないように構成したものが広く採用されている。 As a concrete formwork, it is equipped with a flat plate-like dam plate and a frame-shaped reinforcing frame provided on the back side of the dam plate, and a butter material made of round or square steel pipe is arranged on the back side of the reinforcing frame. A construction in which the concrete pressure placed is received by a reinforcing frame and a butter material so that the barrier plate is not bent is widely adopted.

また、堰板としては、合板が広く採用されているが、転用可能な回数が２〜３回と少なく、しかも木材資源を多量に使用することから、最近では、合成樹脂製の堰板や、古紙を利用した堰板（例えば、特許文献１参照。）なども提案され、実用化されている。 In addition, as a dam plate, plywood is widely adopted, but the number of divertable times is as few as two to three times, and since a large amount of wood resources are used, recently, a dam plate made of synthetic resin, A dam (for example, see Patent Document 1) using waste paper has been proposed and put into practical use.

特開２００２−２５６６９９号公報JP 2002-256699 A

しかし、合成樹脂製の堰板においては、転用回数は増えるものの、製作コストが高く、しかも製造時に二酸化炭素などの多量の温室効果ガスが発生するという問題がある。 However, in the synthetic resin dam plate, although the number of diversions increases, the production cost is high, and a large amount of greenhouse gas such as carbon dioxide is generated during the production.

また、古紙を利用した堰板では、例えば表面にポリエチレンテレフタレート製の樹脂フィルムを貼着することで、転用回数を増やすことができ、しかも資源を有効活用できることから環境に対する負荷も少なくできる。しかし、合板製の堰板と比較して曲げ強度が低いことから、堰板背面に配置される補強用の桟木の本数を、合板製の堰板の場合と比較して１．５〜２．０倍程度に増やす必要があり、型枠の組み立て作業が煩雑になるとともに、堰板の表裏面を反転させて転用するときに、多数の釘を抜いて桟木から堰板を取り外し、取り外した堰板を裏返して、再度多数の釘で桟木に固定する必要があり、その作業が大変煩雑になるという問題があった。 Moreover, in the weir plate using waste paper, for example, by sticking a polyethylene terephthalate resin film on the surface, the number of diversions can be increased, and the resources can be effectively used, so the burden on the environment can be reduced. However, since the bending strength is lower than that of the plywood dam plate, the number of reinforcing piers arranged on the back surface of the dam plate is 1.5-2. It is necessary to increase it to about 0 times, and the assembly work of the formwork becomes complicated, and when diverting the front and back surfaces of the dam plate, the dam plate is removed from the pier by removing a number of nails. There is a problem that it is necessary to turn the board upside down and fix it to the pier again with a large number of nails, which is very complicated.

本考案の目的は、軽量且つ安価で、しかも環境に優しい古紙製の堰板を用いつつ、堰板の表裏面の切替作業が容易なコンクリート型枠を提供することである。 An object of the present invention is to provide a concrete formwork that is easy to switch between the front and back surfaces of a dam plate while using a lightweight, inexpensive, and environmentally friendly waste paper dam plate.

本考案に係るコンクリート型枠は、略平板状の堰板と、角形断面の複数の内バタ材と、前記堰板のコンクリート打設側とは反対側の背面側に設けられ、前記内バタ材の少なくとも両端部を着脱自在に保持して、内バタ材の一側面を堰板の背面に密接配置させるとともに、複数の内バタ材を相互に間隔をあけて略平行に堰板の背面側に固定する固定金具とを備えたものである。 The concrete formwork according to the present invention is provided on the back side of the dam plate opposite to the concrete placement side, the substantially flat plate-shaped dam plate, a plurality of inner butter materials having a square cross section, At least both ends of the inner plate are detachably held so that one side surface of the inner butter material is closely arranged on the back surface of the weir plate, and a plurality of inner butter materials are spaced substantially parallel to each other on the back side of the weir plate. A fixing bracket is provided.

この型枠では、複数の内バタ材を固定金具により堰板に対して着脱自在に固定保持して、内バタ材の一側面を堰板の背面に略隙間なく密接配置させるとともに、複数の内バタ材を相互に間隔をあけて略平行に堰板の背面側に固定し、複数の内バタ材を堰板に固定して、コンクリート型枠を組み立てることになる。そして、このように組み立てたコンクリート型枠で壁等のコンクリート構造物を施工する際には、堰板を対面させて１対のコンクリート型枠を平行配置し、堰板間にコンクリートを打設して壁等のコンクリート構造物を施工することになるが、このとき打設したコンクリート圧は、堰板を介して複数の内バタ材により受け止められることになる。このため、堰板として例えば古紙を利用した堰板のように曲げ強度の弱い堰板を用いる場合には、内バタ材の本数を増やして、隣接する内バタ材の間隔を狭くすることで、堰板の撓みを抑えることになるが、内バタ材は固定金具で堰板に固定保持しているので、釘等で堰板に固定する必要がなく、内バタ材の本数を増やしても、固定金具から内バタ材を取り外すことで、型枠から内バタ材を容易に取り外すことができ、堰板の表裏面を容易に反転させることができる。このため、古紙を利用した堰板のように曲げ強度の弱い堰板を採用しつつ、堰板の表裏面を切替えて、型枠の転用回数を容易に増やすことができる。しかも、内バタ材としては、安価に入手可能な角形鋼管を採用できるので、型枠の製作コストが高くなることもないし、木製の桟木を用いる場合と比較して、木材の使用量を少なくできるので好ましい。 In this formwork, a plurality of inner butter materials are detachably fixed and held with respect to the dam plate by fixing brackets, and one side surface of the inner butter material is closely arranged on the back surface of the dam plate without substantially gaps. A concrete formwork is assembled by fixing the butter material to the back side of the dam plate substantially in parallel with a space between each other, and fixing the plurality of inner butter materials to the dam plate. And when constructing a concrete structure such as a wall with the concrete molds assembled in this way, a pair of concrete molds are placed in parallel with the weir plates facing each other, and concrete is placed between the weir plates. A concrete structure such as a wall is constructed, and the concrete pressure cast at this time is received by a plurality of internal flaps through the dam plate. For this reason, for example, when using a weak dam plate such as a dam plate using waste paper as the dam plate, increasing the number of inner butter materials, narrowing the interval between adjacent inner butter materials, Although we will suppress the bending of the weir plate, the inner butter material is fixed and held on the weir plate with a fixing bracket, so there is no need to fix it to the weir plate with nails etc., even if the number of inner butter materials is increased, By removing the inner flap material from the fixture, the inner flap material can be easily removed from the mold, and the front and back surfaces of the dam plate can be easily reversed. For this reason, it is possible to easily increase the number of diversions of the formwork by switching the front and back surfaces of the dam plate while adopting a dam plate having low bending strength like a dam plate using waste paper. In addition, since the rectangular steel pipe that can be obtained at low cost can be adopted as the inner butter material, the production cost of the formwork is not increased, and the amount of wood used can be reduced compared to the case of using a wooden pier. Therefore, it is preferable.

前記堰板として、古紙からなる基板と、該基板の両面に貼着した樹脂フィルムとを有するものを用いることができる。このような堰板を用いると、堰板の転用回数を容易に増やすことができるし、施工したコンクリート構造物からの型枠の取り外しが容易になるので好ましい。また、樹脂フィルムが剥離した場合には、基板を古紙原料として再利用することができる。 As the barrier plate, one having a substrate made of waste paper and a resin film attached to both surfaces of the substrate can be used. Use of such a weir plate is preferable because the number of diversions of the weir plate can be easily increased and the formwork can be easily detached from the constructed concrete structure. Moreover, when a resin film peels, a board | substrate can be reused as a used paper raw material.

前記固定金具として、平面視角形の複数の固定金具を相互に間隔をあけて堰板に固定し、隣接する固定金具間に、前記内バタ材を着脱可能に嵌合固定することも好ましい実施の形態である。この場合には、安価に製作可能な固定金具を採用しつつ、固定金具の内側にナット部材を溶接固定するなどして、ボルトやビスで固定金具を堰板に取付けることができる。また、複数の内バタ材を個別に着脱できるので、内バタ材の取り付け、取り外し作業の作業性を向上できる。 As the fixing bracket, a plurality of fixing brackets having a rectangular shape in plan view are fixed to the weir plate with a space between each other, and the inner butter material is detachably fitted and fixed between adjacent fixing brackets. It is a form. In this case, the fixing bracket can be attached to the weir plate with a bolt or a screw, for example, by fixing the nut member to the inside of the fixing bracket by using a fixing bracket that can be manufactured at low cost. In addition, since the plurality of inner butter materials can be individually attached and detached, the workability of attaching and removing the inner butter material can be improved.

前記固定金具間に嵌合させた内バタ材の脱落を規制する保持プレートを、隣接する固定金具に着脱自在に固定することができる。この場合には、保持プレートを固定金具に固定することで、内バタ材を確実に型枠に固定することができ、また保持プレートを固定金具から取り外すことで、内バタ材を容易に取り外すことができる。 The holding plate that restricts the dropout of the inner butter material fitted between the fixing brackets can be detachably fixed to the adjacent fixing bracket. In this case, the inner plate can be securely fixed to the formwork by fixing the holding plate to the fixing bracket, and the inner plate can be easily removed by removing the holding plate from the fixing bracket. Can do.

前記固定金具として、内バタ材を保持する保持部を有する矩形波状の固定金具を用いることもできる。この場合には、１つの固定金具に複数の保持部を形成することで、複数の内バタ材を同時に堰板に固定したり、複数の内バタ材を同時に堰板から取り外したりすることができる。また、固定金具により堰板を補強できるので、部材点数を少なくしつつ堰板の強度剛性を高めることができる。 As the fixing bracket, a rectangular wave-shaped fixing bracket having a holding portion for holding the inner flap material may be used. In this case, by forming a plurality of holding portions in one fixing bracket, it is possible to fix a plurality of inner butter materials to the barrier plate at the same time, or to remove a plurality of inner butter materials from the barrier plate at the same time. . Further, since the barrier plate can be reinforced by the fixing bracket, the strength rigidity of the barrier plate can be increased while reducing the number of members.

前記堰板の背面の側縁に前記内バタ材と平行に木製の補強フレームを固定し、該補強フレームに前記固定金具を固定することも好ましい実施の形態である。この場合には、補強フレームにより堰板の側縁の強度剛性を高めることができ、堰板の撓みを少なくして、コンクリート構造物を精度良く施工することができる。また、堰板と補強フレームとにわたって固定金具を固定することで、固定金具の取り付け強度を容易に高めることができる。 It is also a preferred embodiment that a wooden reinforcing frame is fixed to the side edge of the back surface of the dam plate in parallel with the inner flap material, and the fixing bracket is fixed to the reinforcing frame. In this case, the strength rigidity of the side edge of the barrier plate can be increased by the reinforcing frame, and the concrete structure can be constructed with high accuracy by reducing the deflection of the barrier plate. Moreover, the fixing strength of the fixing bracket can be easily increased by fixing the fixing bracket over the barrier plate and the reinforcing frame.

前記堰板の背面の側縁と中央部とに前記内バタ材と平行に木製の補強フレームを固定し、該補強フレームに前記固定金具を固定することも好ましい。この場合には、補強フレームにより堰板の側縁と中央部の強度剛性を高めることができ、堰板の撓みを一層少なくして、コンクリート構造物を精度良く施工することができる。また、堰板と補強フレームとに固定金具を固定することで、固定金具の取り付け強度を容易に高めることができる。 It is also preferable that a wooden reinforcing frame is fixed in parallel to the inner flap material on the side edge and the central portion of the back surface of the barrier plate, and the fixing bracket is fixed to the reinforcing frame. In this case, the strength rigidity of the side edge and the central portion of the barrier plate can be increased by the reinforcing frame, and the bending of the barrier plate can be further reduced, so that the concrete structure can be constructed with high accuracy. Moreover, the fixing strength of the fixing bracket can be easily increased by fixing the fixing bracket to the barrier plate and the reinforcing frame.

１対の堰板をセパレータにより設定間隔をあけて平行配置し、両堰板の背面側に内バタ材をそれぞれ配置し、該内バタ材の外側に外バタ材を内バタ材に直交させてそれぞれ設け、セパレータと外バタ材とを緊張状態に連結する連結部材を設けることができる。このように１対の型枠を平行に施工するとともに、両型枠の堰板間に配筋を行なうなどした後、コンクリートを打設することで、コンクリート構造物の壁等を施工することができる。打設したコンクリート圧は堰板を介して内外のバタ材に伝達され、外バタ材の外方への移動が連結部材とセパレータとで規制されることで、型枠の両側に配置した外バタ材で受け止められることになる。 A pair of barrier plates are arranged in parallel with a set interval by a separator, inner flap materials are respectively arranged on the back side of both barrier plates, and the outer flap material is orthogonal to the inner flap material outside the inner flap materials. A connecting member for connecting the separator and the outer flap material in a tension state can be provided. In this way, a pair of molds can be constructed in parallel, and after placing reinforcement between the dam plates of both molds, concrete can be placed to construct a concrete structure wall, etc. it can. The cast concrete pressure is transmitted to the inner and outer butter material via the weir plate, and the outward movement of the outer butter material is regulated by the connecting member and the separator. It will be accepted by the material.

隣接配置される型枠を着脱可能に連結するクランパーを設けることも好ましい実施の形態である。従来、型枠同士は釘等で結合していたが、本考案のようにクランパーにより結合すると、釘等による型枠の損傷を防止できるので、型枠の転用が容易になる。 It is also a preferred embodiment to provide a clamper that removably connects adjacently placed molds. Conventionally, the molds are connected with nails or the like, but if they are connected with a clamper as in the present invention, the molds can be prevented from being damaged by the nails or the like, so that the transfer of the molds becomes easy.

本考案に係るコンクリート型枠によれば、堰板として例えば古紙を利用した堰板のように曲げ強度の弱い堰板を用いる場合には、内バタ材の本数を増やして、隣接する内バタ材の間隔を狭くすることで、堰板の撓みを抑えることになるが、内バタ材は固定金具で堰板に固定保持しているので、釘等で堰板に固定する必要がなく、内バタ材の本数を増やしても、型枠から内バタ材を容易に取り外すことができるので、堰板の表裏面を容易に反転させることができる。このため、古紙を利用した堰板のように曲げ強度の弱い堰板を採用しつつ、堰板の表裏面を切替えて、型枠の転用回数を容易に増やすことができる。しかも、内バタ材としては、安価に入手可能な角形鋼管を採用できるので、型枠の製作コストが高くなることもないし、木製の桟木を用いる場合と比較して、木材の使用量を少なくでき、しかもコンクリート構造物の施工精度を向上できるので好ましい。 According to the concrete formwork according to the present invention, when using a weir plate with low bending strength, such as a weir plate using waste paper, the number of inner butter materials is increased and the adjacent inner flap material is used. By narrowing the gap, the deflection of the weir plate will be suppressed. However, since the inner butter material is fixed and held on the weir plate by a fixing bracket, it is not necessary to fix it to the weir plate with nails or the like. Even if the number of materials is increased, the inner butter material can be easily removed from the mold, so that the front and back surfaces of the barrier plate can be easily reversed. For this reason, it is possible to easily increase the number of diversions of the formwork by switching the front and back surfaces of the dam plate while adopting a dam plate having low bending strength like a dam plate using waste paper. In addition, as the internal flap material, a square steel pipe that can be obtained at low cost can be adopted, so that the production cost of the formwork does not increase, and the amount of wood used can be reduced compared to the case of using wooden piers. Moreover, it is preferable because the construction accuracy of the concrete structure can be improved.

以下、本考案を実施するための最良の形態について、図面を参照しながら説明する。
図１〜図５に示すように、コンクリート型枠１は、略平板状の堰板２と、堰板２のコンクリート打設側とは反対側の背面側に固定した補強フレーム３と、堰板２の背面側に縦向きの補強フレーム３Ａと平行に設けた角形断面の内バタ材４と、堰板２の背面側に設けられ、内バタ材４の少なくとも両端部を着脱自在に保持して、内バタ材４の一側面を堰板２の背面に密接配置させるとともに、内バタ材４を相互に間隔をあけて略平行に堰板２の背面側に固定する固定金具５とを備えている。 The best mode for carrying out the present invention will be described below with reference to the drawings.
As shown in FIGS. 1 to 5, the concrete mold 1 includes a substantially flat dam plate 2, a reinforcing frame 3 fixed to the back side of the dam plate 2 opposite to the concrete placement side, and a dam plate. 2 is provided on the back side of the dam plate 2, and at least both ends of the inner flap material 4 are detachably held. In addition, one side surface of the inner butter material 4 is arranged in close contact with the back surface of the dam plate 2, and a fixing bracket 5 is provided for fixing the inner butter material 4 to the back surface side of the dam plate 2 with a space therebetween. Yes.

堰板２は、紙製の基板の両面に、接着層を介して樹脂フィルムを貼着した、例えば９００ｍｍ×１８００ｍｍの細長い長方形板状のものである。堰板２の寸法は、施工するコンクリート構造物の寸法に応じて適宜に設定することができる。基板としては、再生古紙７５重量％以上の耐水板紙を複数枚、積層状に貼り合せたものを好適に採用できる。基板の厚さは、堰板２の縦横の寸法にもよるが、３ｍｍ〜１５ｍｍ、好ましくは３ｍｍ〜６ｍｍ程度とすることができる。また、樹脂フィルムとしては、ポリエチレンテレフタレートフィルムなどのポリエステルフィルムを好適に採用できる。樹脂フィルムの厚さは、基板を保護し、繰り返し使用に耐えるためには１０μｍ程度は必要であり、好ましくは１０〜３００μｍ程度、通常は１０〜５０μｍ程度に設定することになる。接着層としては、ホットメルト系接着剤、合成ゴム系接着剤などを用いて接着してもよいが、熱可塑性樹脂からなる接着層を介して貼着することが好ましく、押出ラミネーション法によりポリエチレンなどの溶融した熱可塑性樹脂フィルムを積層すると同時に、そのうえから樹脂フィルムを積層し、圧接して堰板２の表面に樹脂フィルムを貼着する方法が好ましい。但し、堰板２としては、前述のように、古紙を主体として構成したものが、環境に優しいことから好適に採用できるが、合板や合成樹脂板を用いることも可能である。 The dam plate 2 is an elongated rectangular plate of, for example, 900 mm × 1800 mm, in which a resin film is bonded to both sides of a paper substrate via an adhesive layer. The dimensions of the weir plate 2 can be set as appropriate according to the dimensions of the concrete structure to be constructed. As the substrate, a laminate of a plurality of water-resistant paperboards of 75% by weight or more of recycled used paper can be suitably used. The thickness of the substrate is 3 mm to 15 mm, preferably about 3 mm to 6 mm, although it depends on the vertical and horizontal dimensions of the barrier plate 2. Moreover, as a resin film, polyester films, such as a polyethylene terephthalate film, can be employ | adopted suitably. The thickness of the resin film needs to be about 10 μm in order to protect the substrate and endure repeated use, preferably about 10 to 300 μm, and usually about 10 to 50 μm. The adhesive layer may be bonded using a hot-melt adhesive, a synthetic rubber adhesive, or the like, but is preferably pasted through an adhesive layer made of a thermoplastic resin, such as polyethylene by an extrusion lamination method. At the same time as laminating the molten thermoplastic resin film, a method of laminating the resin film thereon and pressing the resin film on the surface of the dam plate 2 is preferable. However, as the dam plate 2, as described above, the one composed mainly of waste paper can be preferably used because it is environmentally friendly, but a plywood or a synthetic resin plate can also be used.

補強フレーム３は、木製の角材で構成され、堰板２の幅方向の両側部と中央部には補強フレーム３Ａが堰板２の長さ方向に沿って設けられ、堰板２の下縁には補強フレーム３Ｂが幅方向に沿って設けられている。堰板２に対する補強フレーム３の固定は、堰板２の表裏面を容易に反転できるように、木ネジ６（図４参照）により着脱可能に固定されている。ただし、補強フレーム３としては、型枠１の軽量化のため木製のものを採用したが、アルミニウム合金や合成樹脂の押出成形品や、金属製の角パイプなどからなるものを採用することもできる。 The reinforcing frame 3 is made of wooden square material, and reinforcing frames 3A are provided along the length direction of the dam plate 2 at both sides and the center in the width direction of the dam plate 2. The reinforcing frame 3B is provided along the width direction. The reinforcing frame 3 is fixed to the dam plate 2 so as to be detachable by wood screws 6 (see FIG. 4) so that the front and back surfaces of the dam plate 2 can be easily reversed. However, although the wooden frame is used as the reinforcing frame 3 in order to reduce the weight of the mold 1, an aluminum alloy or synthetic resin extruded product, a metal square pipe, or the like can also be used. .

内バタ材４は、断面正方形状の周知の構成の金属製の角パイプで構成されている。内バタ材４の一辺の長さと、補強フレーム３の堰板２からの高さとは略同じ寸法に設定され、内バタ材４の外側に内バタ材４と直交させて配置される丸パイプからなる外バタ材７で、補強フレーム３及び内バタ材４に作用するコンクリート圧を受圧できるように構成されている。 The inner butter material 4 is formed of a metal square pipe having a well-known configuration having a square cross section. The length of one side of the inner flap material 4 and the height of the reinforcing frame 3 from the barrier plate 2 are set to be substantially the same dimension, and the round pipe arranged to be orthogonal to the inner flap material 4 outside the inner flap material 4 The outer butter material 7 is configured to receive the concrete pressure acting on the reinforcing frame 3 and the inner butter material 4.

固定金具５は、平面視略ロ字状の短尺な角筒状の本体部５ａと、本体部５ａの一側部から上方又は下方へ延びる１つの取付片５ｂとを有する金属製の部材で構成され、堰板２の上部と下部とに相互に間隔をあけて６個ずつ設けられている。本体部５ａの前壁部の内面には左右１対の前部ナット５ｃが溶接により一体的に固定され、本体部５ａの後壁部の内面には左右１対の後部ナット５ｄが溶接により一体的に固定されている。隣接する補強フレーム３間には３つの固定金具５がそれぞれ設けられ、左側の固定金具５は取付片５ｂを上側へ向けて配置され、右側の固定金具５は取付片５ｂを下側へ向けて配置され、図４に示すように、取付片５ｂを補強フレーム３に木ネジ８で固定するとともに、後部ナット５ｄに堰板２を挿通する皿ネジ９を螺合させて、補強フレーム３と堰板２とに固定されている。また、隣接する補強フレーム３間の中央部の固定金具５は、後部ナット５ｄに堰板２を挿通する皿ネジ９を螺合させて堰板２とに固定されている。この中央部の固定金具５の取付片５ｂは、使用しないので、上側へ向けて配置することもできるし、下側へ向けて配置することもできる。このように構成することで、堰板２に対する固定金具５の取付強度を極力高めつつ、１枚の型枠１で用いる１２個の固定金具５として、全て同じ構成のものを使用することが可能となり、部品点数を減らして製作コストを低減できる。ただし、本体部５ａの一側部に上下両側への延びる１対の取付片５ｂを設けたり、本体部５ａの左右の側部に上下両側へ延びる取付片５ｂを設けたりしたものを採用することもできる。 The fixing bracket 5 is composed of a metal member having a short rectangular tube-shaped main body portion 5a having a substantially rectangular shape in plan view and a single attachment piece 5b extending upward or downward from one side portion of the main body portion 5a. In addition, six pieces are provided at an upper portion and a lower portion of the weir plate 2 with a space therebetween. A pair of left and right front nuts 5c are integrally fixed to the inner surface of the front wall portion of the main body portion 5a by welding, and a pair of left and right rear nuts 5d are integrally welded to the inner surface of the rear wall portion of the main body portion 5a. Fixed. Three fixing brackets 5 are respectively provided between adjacent reinforcing frames 3, the left fixing bracket 5 is disposed with the mounting piece 5b facing upward, and the right fixing bracket 5 has the mounting strip 5b facing downward. As shown in FIG. 4, the mounting piece 5b is fixed to the reinforcing frame 3 with a wood screw 8, and a countersunk screw 9 for inserting the weir plate 2 is screwed into the rear nut 5d to screw the reinforcing frame 3 and the weir It is fixed to the plate 2. Further, the central fixing metal 5 between the adjacent reinforcing frames 3 is fixed to the dam plate 2 by screwing a countersunk screw 9 for inserting the dam plate 2 into the rear nut 5d. Since the mounting piece 5b of the fixing bracket 5 at the center is not used, it can be arranged upward or can be arranged downward. By configuring in this way, it is possible to use the same structure as the twelve fixing brackets 5 used in one mold 1 while increasing the mounting strength of the fixing bracket 5 to the barrier plate 2 as much as possible. Thus, the number of parts can be reduced and the manufacturing cost can be reduced. However, a pair of mounting pieces 5b extending in the upper and lower sides on one side of the main body 5a or mounting pieces 5b extending in the upper and lower sides on the left and right sides of the main body 5a should be adopted. You can also.

補強フレーム３間に配置される隣接する固定金具５の間隔は内バタ材４の一辺の長さと同じに設定され、隣接する固定金具５間に内バタ材４を着脱自在に略隙間なく嵌合できるように構成されている。また、堰板２からの固定金具５の突出高さは内バタ材４の一辺の長さと略同じに設定され、隣接する固定金具５間に内バタ材４を嵌合させた状態で、隣接する固定金具５の前面間に平板状の保持プレート１０をボルト１１で架設状に固定することで、内バタ材４は固定金具５間に脱落不能に保持されている。また、保持プレート１０を固定金具５に固定することで、隣接する固定金具５が保持プレート１０で連結されて、３つの固定金具５と２枚の保持プレート１０とで隣接する補強フレーム３が連結されるので、型枠１の強度剛性を高めることができる。保持プレート１０の両側部には下側へ向けて開口する略Ｕ字状のスリット１０ａが形成され、このスリット１０ａにボルト１１を挿通させて、保持プレート１０を固定金具５に着脱自在に固定するので、ボルト１１を緩めるだけで、保持プレート１０を着脱することができる。ただし、固定金具５の堰板２からの突出高さを内バタ材４の一辺よりも短く設定し、保持プレート１０として、固定金具５間に嵌合させた内バタ材４のうちの固定金具５よりも外側へ突出する部分に嵌合する嵌合部を形成したものを用いてもよい。また、保持プレート１０を用いる以外の方法で、例えばボルトやネジや番線などで、内バタ材４を固定金具５に固定することも可能である。 The interval between the adjacent fixing brackets 5 arranged between the reinforcing frames 3 is set to be equal to the length of one side of the inner flap member 4, and the inner flap member 4 can be detachably fitted between the adjacent fixing brackets 5 with almost no gap. It is configured to be able to. Further, the protruding height of the fixing bracket 5 from the barrier plate 2 is set to be substantially the same as the length of one side of the inner flap material 4, and the adjacent metal fitting 4 is fitted between the adjacent fixing brackets 5 and adjacent to each other. By fixing a flat holding plate 10 between the front surfaces of the fixing bracket 5 to be installed with bolts 11, the inner flap material 4 is held between the fixing brackets 5 so as not to fall off. Further, by fixing the holding plate 10 to the fixing metal 5, the adjacent fixing metal 5 is connected by the holding plate 10, and the adjacent reinforcing frames 3 are connected by the three fixing metal 5 and the two holding plates 10. Thus, the strength and rigidity of the mold 1 can be increased. A substantially U-shaped slit 10 a that opens downward is formed on both sides of the holding plate 10, and a bolt 11 is inserted through the slit 10 a to removably fix the holding plate 10 to the fixing bracket 5. Therefore, the holding plate 10 can be attached and detached simply by loosening the bolt 11. However, the height of the fixing bracket 5 protruding from the barrier plate 2 is set to be shorter than one side of the inner flap material 4, and the fixing bracket of the inner flap material 4 fitted between the fixing brackets 5 is used as the holding plate 10. What formed the fitting part fitted in the part which protrudes outside rather than 5 may be used. In addition, the inner flap material 4 can be fixed to the fixing bracket 5 by a method other than using the holding plate 10, for example, with a bolt, a screw, a wire, or the like.

この型枠１を組み立てる際には、堰板２の幅方向の両側部と中央部とに堰板２の長さ方向に沿って補強フレーム３を木ネジ６で固定するとともに、堰板２の下側部に堰板２の幅方向に沿って補強フレーム３を木ネジ６で固定する。なお、堰板２の下側部の補強フレーム３は内バタ材４の下端部の位置を適正に設定するために設けることが好ましいが、省略することも可能である。 When assembling the mold 1, the reinforcing frame 3 is fixed to the both sides and the center of the barrier plate 2 along the length direction of the barrier plate 2 with the wood screws 6, and the barrier plate 2 The reinforcing frame 3 is fixed to the lower side portion with a wood screw 6 along the width direction of the barrier plate 2. In addition, although it is preferable to provide the reinforcement frame 3 of the lower part of the barrier plate 2 in order to set the position of the lower end part of the inner flap material 4 appropriately, it can also be abbreviate | omitted.

次に、隣接する縦方向の補強フレーム３の上部間と下部間に３つの固定金具５を相互に一定の間隔をあけて皿ネジ９で堰板２にそれぞれ固定するとともに、３つの固定金具５のうちの左右両側に配置される固定金具５に関しては取付片５ｂを木ネジ８で補強フレーム３の側部に固定して、合計１２個の固定金具５を堰板２と補強フレーム３に固定する。 Next, three fixing brackets 5 are respectively fixed to the dam plate 2 with a countersunk screw 9 between the upper portion and the lower portion of the adjacent vertical reinforcing frames 3 with a fixed distance from each other, and the three fixing brackets 5 are fixed. As for the fixing brackets 5 arranged on the left and right sides, the mounting pieces 5b are fixed to the side portions of the reinforcing frame 3 with the wood screws 8, and a total of twelve fixing brackets 5 are fixed to the barrier plate 2 and the reinforcing frame 3. To do.

こうして固定金具５を固定してから、隣接する３つの固定金具５間に内バタ材４を嵌合させてから、該固定金具５の前側に保持プレート１０を架設状に固定し、１枚の堰板２に４本の内バタ材４を嵌合固定して、型枠１を組み立てることになる。 After fixing the fixing bracket 5 in this manner, the inner butter material 4 is fitted between the three adjacent fixing brackets 5, and then the holding plate 10 is fixed to the front side of the fixing bracket 5 in a erected shape. The mold 1 is assembled by fitting and fixing the four inner flaps 4 to the barrier plate 2.

このように、補強フレーム３や固定金具５を堰板２に固定するために木ネジ６や皿ネジ９は用いるものの、内バタ材４は、左右の固定金具５と保持プレート１０とで保持されているだけであり、木ネジやビス等で堰板２や固定金具５に固定していないので、型枠１の組立作業を煩雑にすることなく、内バタ材４の本数を増やすことができる。このため、環境に優しく安価に製作可能な古紙製の堰板２を採用しつつ、型枠１の組立作業性や、堰板２の表裏面を反転させるときの作業性を向上できる。つまり、古紙製の堰板２は、環境に優しく安価に製作可能ではあるが、曲げ強度は弱いという問題があり、コンクリート構造物を精度良く施工するためには、堰板２背面側の補強材の強度剛性を高める必要があるが、この型枠１では、型枠１の組立作業を煩雑にすることなく、内バタ材４の本数を増やすことができるので、古紙製の堰板２を採用しつつ、型枠１の組立作業性や、堰板２の表裏面を反転させるときの作業性を向上できる。 Thus, although the wood screw 6 and the countersunk screw 9 are used to fix the reinforcing frame 3 and the fixing bracket 5 to the barrier plate 2, the inner flap material 4 is held by the left and right fixing brackets 5 and the holding plate 10. Since it is not fixed to the dam plate 2 or the fixing bracket 5 with wood screws or screws, the number of the inner flaps 4 can be increased without complicating the assembly work of the mold 1. . For this reason, it is possible to improve the assembly workability of the mold 1 and the workability when the front and back surfaces of the barrier plate 2 are reversed while adopting the wastepaper-made barrier plate 2 that can be produced at low cost in an environmentally friendly manner. In other words, although the waste paper 2 made of waste paper is environmentally friendly and can be manufactured at low cost, there is a problem that the bending strength is weak. In order to construct a concrete structure with high accuracy, the reinforcing material on the back side of the barrier 2 is used. It is necessary to increase the strength and rigidity of the mold. However, in the mold 1, the number of the inner flaps 4 can be increased without complicating the assembly work of the mold 1, so the waste paper weir plate 2 is used. However, the assembly workability of the mold 1 and the workability when the front and back surfaces of the barrier plate 2 are reversed can be improved.

こうして組み立てた型枠１により壁等のコンクリート構造物を施工する際には、図１、図２に示すように、堰板２が対面するように１対の型枠１を平行配置し、複数の型枠１をクランパー１８で連結するとともに、堰板２間に必要な配筋１９を施工する。また、堰板２間に複数本のセパレータ１２を架設状に取付けて、堰板２の背面側へ突出するセパレータ１２の端部に連結部材１３を螺合させてから、連結部材１３の上下両側に外バタ材７を略水平に配置させ、上下の外バタ材７に係合する押え部材１４を連結部材１３に取付けて、連結部材１３にナット１５を締結することで、セパレータ１２に取付けたコーン１６と押え部材１４間に、堰板２と内バタ材４と外バタ材７とを挟んで、外バタ材７とセパレータ１２と型枠１とを一体化させるとともに、セパレータ１２により平行配置した１対の型枠１を一体化させることになる。 When constructing a concrete structure such as a wall with the mold 1 assembled in this way, as shown in FIGS. 1 and 2, a pair of molds 1 are arranged in parallel so that the dam plate 2 faces, The formwork 1 is connected by a clamper 18, and necessary reinforcing bars 19 are installed between the barrier plates 2. In addition, a plurality of separators 12 are attached between the barrier plates 2 in an erected shape, and the connecting member 13 is screwed to the end of the separator 12 projecting to the back side of the barrier plate 2, and then the both upper and lower sides of the connecting member 13. The outer butter material 7 is arranged substantially horizontally, the presser member 14 that engages the upper and lower outer butter materials 7 is attached to the connecting member 13, and the nut 15 is fastened to the connecting member 13, so that the outer member 7 is attached to the separator 12. Between the cone 16 and the pressing member 14, the outer plate material 7, the separator 12, and the mold 1 are integrated with the barrier plate 2, the inner flap material 4, and the outer flap material 7. The paired molds 1 are integrated.

こうして間隔をあけて１対の型枠１を略平行に施工した後、堰板２間にコンクリート１７を打設して壁等のコンクリート構造物を施工することになるが、このとき打設したコンクリート圧は、堰板２を介して複数の内バタ材４により受け止められるので、内バタ材４により堰板２の撓みが防止されて、コンクリート構造物を精度良く施工することができる。また、コンクリート構造物の施工後、型枠１を取り外して、これを転用することになり、また堰板２のコンクリート打設側の樹脂フィルムが損傷したり剥離したりした場合には、型枠１を分解して、堰板２の表裏面を反転させて型枠１を組み立て、これを転用することになる。このように、堰板２の表裏面を利用できるので、型枠１を１０回〜１５回転用することができる。また、隣接する型枠１はクランパー１８で連結するので、釘等で連結する場合と比較して、型枠１の取り外し作業の作業性を格段に向上できる。 After a pair of molds 1 were constructed in parallel with each other in such a manner, concrete 17 such as a wall was constructed by placing concrete 17 between the dam plates 2. Since the concrete pressure is received by the plurality of inner flaps 4 via the barrier plate 2, the inner flaps 4 prevent the barrier plate 2 from being bent, and the concrete structure can be constructed with high accuracy. In addition, after the concrete structure is constructed, the mold 1 is removed and diverted, and when the resin film on the concrete placing side of the barrier plate 2 is damaged or peeled off, 1 is disassembled, the front and back surfaces of the barrier plate 2 are reversed, the mold 1 is assembled, and this is diverted. Thus, since the front and back surfaces of the barrier plate 2 can be used, the mold 1 can be used 10 to 15 times. Moreover, since the adjacent formwork 1 is connected by the clamper 18, the workability of the removal work of the formwork 1 can be remarkably improved compared with the case where it connects with a nail etc.

尚、図６に示す型枠１Ａのように、固定金具２０として、補強フレーム３への取付部２０ａと、１対の内バタ材４を保持する１対の保持部２０ｂとを有し、１枚ものの帯板状の金属板を矩形波状に成形してなるものを採用することもできる。この場合には、固定金具２０の保持部２０ｂに内バタ材４を嵌合させた状態で、固定金具２０の取付部２０ａをボルトなどの固定具２１で補強フレーム３に固定することで、内バタ材４を型枠１に容易に取り付けることができるので、前記実施の形態の固定金具５を用いる場合と同様に、型枠１Ａの組立作業を煩雑にすることなく、内バタ材４の本数を増やすことができるので、古紙製の堰板２を採用しつつ、型枠１Ａの組立作業性や、堰板２の表裏面を反転させるときの作業性を向上できる。 Note that, as the mold 1A shown in FIG. 6, the fixing bracket 20 includes an attachment portion 20a to the reinforcing frame 3 and a pair of holding portions 20b that hold the pair of inner flaps 4. It is also possible to employ a sheet of strip-shaped metal plate formed into a rectangular wave shape. In this case, by fixing the mounting portion 20a of the fixing bracket 20 to the reinforcing frame 3 with a fixing tool 21 such as a bolt in a state where the inner flap 4 is fitted to the holding portion 20b of the fixing bracket 20, the inner portion Since the butterfly material 4 can be easily attached to the mold 1, the number of the inner flaps 4 can be obtained without complicating the assembly work of the mold 1 </ b> A, as in the case of using the fixture 5 of the embodiment. Therefore, it is possible to improve the workability when assembling the mold 1A and inverting the front and back surfaces of the barrier plate 2 while adopting the waste paper barrier plate 2.

コンクリート型枠の施工状態を示す斜視図Perspective view showing the construction state of concrete formwork コンクリート型枠の施工状態を示す要部の斜視図Perspective view of main part showing construction status of concrete formwork 型枠要部の分解斜視図Disassembled perspective view of main part of mold 図１のIV-IV線断面図IV-IV sectional view of FIG. 型枠のセパレータ付近の縦断面図Longitudinal section around the separator of the formwork 他の構成の固定金具を用いた型枠要部の分解斜視図Exploded perspective view of the main part of the formwork using a fixture with another configuration

Explanation of symbols

１コンクリート型枠２堰板
３補強フレーム３Ａ補強フレーム
３Ｂ補強フレーム４内バタ材
５固定金具５ａ本体部
５ｂ取付片５ｃ前部ナット
５ｄ後部ナット６木ネジ
７外バタ材８木ネジ
９皿ネジ１０保持プレート
１０ａスリット１１ボルト
１２セパレータ１３連結部材
１４押え部材１５ナット
１６コーン１７コンクリート
１８クランパー１９配筋
１Ａコンクリート型枠２０固定金具
２０ａ取付部２０ｂ保持部
２１固定具
DESCRIPTION OF SYMBOLS 1 Concrete formwork 2 Dam plate 3 Reinforcement frame 3A Reinforcement frame 3B Reinforcement frame 4 Inner flap material 5 Fixing metal fitting 5a Body part 5b Attachment piece 5c Front nut 5d Rear nut 6 Wood screw 7 Outer material 8 Wood screw 9 Countersunk screw 10 Holding plate 10a Slit 11 Bolt 12 Separator 13 Connecting member 14 Holding member 15 Nut 16 Cone 17 Concrete 18 Clamper 19 Reinforcement 1A Concrete formwork 20 Fixing bracket 20a Mounting portion 20b Holding portion 21 Fixing tool

Claims

A substantially flat weir plate,
A plurality of inner materials having a square cross section;
It is provided on the back side opposite to the concrete placement side of the barrier plate, and at least both ends of the inner flap material are detachably held so that one side surface of the inner flap material is closely arranged on the rear surface of the barrier plate. In addition, a fixing bracket that fixes the plurality of inner butter materials to the back side of the dam plate substantially in parallel with a space therebetween,
A concrete formwork characterized by comprising

The concrete formwork according to claim 1, wherein the barrier plate includes a substrate made of waste paper and a resin film adhered to both surfaces of the substrate.

A plurality of square-shaped fixing brackets are fixed to the weir plate at intervals as the fixing brackets, and the inner butter material is detachably fitted and fixed between adjacent fixing brackets. Concrete formwork as described.

The concrete formwork according to claim 3, wherein a holding plate that restricts the falling of the inner butter material fitted between the fixing brackets is detachably fixed to an adjacent fixing bracket.

The concrete formwork of Claim 1 or 2 which used the rectangular wave-shaped fixing metal fitting which has a holding part holding an inner flap material as the said fixing metal fittings.

The concrete formwork of any one of Claims 1-5 which fixed the wooden reinforcement frame to the side edge of the back surface of the said dam plate in parallel with the said inner butter material, and fixed the said fixing metal fitting to this reinforcement frame.

The wooden reinforcing frame is fixed to the side edge and the center part of the back surface of the barrier plate in parallel with the inner flap material, and the fixing bracket is fixed to the reinforcing frame. Concrete formwork.

A pair of barrier plates are arranged in parallel with a set interval by a separator, inner flap materials are respectively arranged on the back side of both barrier plates, and the outer flap material is orthogonal to the inner flap material outside the inner flap materials. The concrete formwork of any one of Claims 1-7 which each provided and provided the connection member which connects a separator and an outer flap material in a tension | tensile_strength state.

The concrete formwork of any one of Claims 1-8 provided with the clamper which connects the formwork arrange | positioned adjacently so that attachment or detachment is possible.