JPH0596526A - Holding method for reinforcing rod in form in manufacturing process for concrete product - Google Patents
Holding method for reinforcing rod in form in manufacturing process for concrete productInfo
- Publication number
- JPH0596526A JPH0596526A JP28723491A JP28723491A JPH0596526A JP H0596526 A JPH0596526 A JP H0596526A JP 28723491 A JP28723491 A JP 28723491A JP 28723491 A JP28723491 A JP 28723491A JP H0596526 A JPH0596526 A JP H0596526A
- Authority
- JP
- Japan
- Prior art keywords
- concrete
- formwork
- concrete product
- reinforcing bar
- manufacturing process
- 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.)
- Granted
Links
- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000004519 manufacturing process Methods 0.000 title claims description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052742 iron Inorganic materials 0.000 claims abstract description 7
- 239000002184 metal Substances 0.000 claims abstract description 7
- 229910052751 metal Inorganic materials 0.000 claims abstract description 7
- 230000002093 peripheral effect Effects 0.000 claims abstract description 5
- 238000009415 formwork Methods 0.000 claims description 13
- 238000003466 welding Methods 0.000 claims description 8
- 239000011347 resin Substances 0.000 claims description 2
- 229920005989 resin Polymers 0.000 claims description 2
- 125000006850 spacer group Chemical group 0.000 abstract description 8
- 238000005452 bending Methods 0.000 abstract description 2
- 238000005260 corrosion Methods 0.000 abstract 1
- 230000007797 corrosion Effects 0.000 abstract 1
- 230000000149 penetrating effect Effects 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 238000009739 binding Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
Landscapes
- Reinforcement Elements For Buildings (AREA)
- Moulds, Cores, Or Mandrels (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、主に土木分野において
使用する種々のコンクリート製品の製造過程において、
型枠内に鉄筋を保持し所定の位置に確実に鉄筋を埋込ん
で所期の品質を得ようとするものである。BACKGROUND OF THE INVENTION The present invention relates to the production process of various concrete products mainly used in the field of civil engineering,
It aims to obtain the desired quality by holding the reinforcing bar in the formwork and surely embedding the reinforcing bar in a predetermined position.
【０００２】[0002]
【従来の技術】従来、鉄筋を型枠内に保持するには、主
にプラスチック製のスペーサーを型枠底面に置きその上
に鉄筋を置くか、あるいは、プラスチック製のスペーサ
ーを鉄筋に嵌着し該スペーサーを型枠底面および型枠側
面に当接させて鉄筋を保持していた。2. Description of the Related Art Conventionally, in order to hold a reinforcing bar in a formwork, a plastic spacer is mainly placed on the bottom of the formwork and the reinforcing bar is placed on it, or a plastic spacer is fitted to the reinforcing bar. The rebar was held by bringing the spacer into contact with the bottom surface and the side surface of the mold.
【０００３】[0003]
【発明が解決しようとする課題】上記従来の鉄筋保持方
法においては、プラスチック製のスペーサーを使用しコ
ンクリート製品中に埋込むものであるが、プラスチック
の熱膨張率はコンクリートのそれと大きく相違するため
に、スペーサーとコンクリートとの間に微細な隙間を生
じ、毛細管現象で水分がコンクリート製品の外面から隙
間を伝わって鉄筋に達し、鉄筋が腐蝕するのである。ま
た、上記従来方法の型枠底面のみで鉄筋を保持するもの
は、鉄筋の水平方向の移動を拘束することができず、コ
ンクリートを投入するときの衝撃等で鉄筋が水平方向に
移動し必要なかぶり厚を確保できないのである。型枠の
底面および側面に当接させるタイプも、どうしても鉄筋
に嵌着する部分が弱くなってしまい、結局該部が変形し
て所定のかぶり厚を確保できない場合が多い。In the above-mentioned conventional method for holding a reinforcing bar, a plastic spacer is used to be embedded in a concrete product. However, since the thermal expansion coefficient of plastic is greatly different from that of concrete, the spacer is A minute gap is created between the concrete and the concrete, and water is transmitted from the outer surface of the concrete product through the gap to the reinforcing bar by the capillary phenomenon, and the reinforcing bar is corroded. Further, in the conventional method, which holds the reinforcing bar only by the bottom surface of the form, the horizontal movement of the reinforcing bar cannot be restrained, and the reinforcing bar is required to move in the horizontal direction due to impact when concrete is poured. The cover thickness cannot be secured. In the case of the type in which the bottom surface and the side surface of the mold are brought into contact with each other, the portion fitted to the reinforcing bar is inevitably weakened, and the portion is deformed in the end, and a predetermined covering thickness cannot be secured in many cases.
【０００４】[0004]
【課題を解決するための手段】本発明は上記課題を解決
するもので、組立てた鉄筋を型枠内に装着しコンクリー
トを投入して硬化後に脱型するコンクリート製品製造過
程において、組立てた鉄筋の周端部に鉄を主成分とする
金属棒状体をへ字状に折曲げた足部材をその先端が型枠
隅角部に当接するごとく下向きに固定し、該足部材によ
り鉄筋を型枠内に保持することを特徴とするコンクリー
ト製品製造過程における型枠内の鉄筋保持方法である。Means for Solving the Problems The present invention is to solve the above-mentioned problems. In the process of manufacturing a concrete product, in which the assembled rebar is mounted in a formwork, concrete is introduced, and the mold is demolded after hardening, A leg member formed by bending a metal rod-shaped body mainly composed of iron into a V shape at the peripheral end is fixed downward so that the tip of the leg member comes into contact with the corner of the form frame, and the rebar is placed inside the form frame by the foot member. A method for holding a reinforcing bar in a formwork in a concrete product manufacturing process, which is characterized in that
【０００５】[0005]
【作用】本発明は、組立てた鉄筋を鉄を主成分とする金
属棒状体の足部材により保持するのであるが、鉄を主成
分とする金属の熱膨張率はコンクリートのそれと近似し
ており、間に隙間を生じることがなく、水分が侵入する
恐れがない。足部材の先端は型枠隅角部に当接させるの
で、組立てた鉄筋は水平方向にも拘束され、コンクリー
トを投入するときの衝撃等で鉄筋が水平方向に移動する
恐れもない。In the present invention, the assembled rebar is held by the foot member of the metal rod-shaped body containing iron as a main component. The coefficient of thermal expansion of the metal containing iron as a main component is similar to that of concrete, There is no gap between them, and there is no risk of water entering. Since the tips of the foot members are brought into contact with the corners of the form, the assembled rebars are also restrained in the horizontal direction, and there is no risk of the rebars moving in the horizontal direction due to impact when concrete is poured.
【０００６】[0006]
【実施例】以下図面により本発明を詳細に説明する。図
１は、コンクリート製溝蓋の製造過程において、型枠１
内部に組立てた鉄筋２を装着したところの上面図であ
る。鉄筋は、Ｄ１０で網状に溶接されている。その周端
部の４隅に太さ６ミリ鉄筋をへ字状に折り曲げた足部材
３が溶接により下向きに固定されている。図２は当該部
分を表した断面図である。足部材３の先端は薄い樹脂の
キャップ４を嵌着し、型枠１の隅角部５に当接してい
る。足部材の先端をキャップで覆ったのは万一コンクリ
ート面から露出したときに錆を防ぐためである。塗料を
塗るなどしても同様の効果がある。足部材の数は、理論
的には３カ所でもよいのであるが、４カ所以上とした方
が安定性がよく望ましい。足部材を設ける位置は、周端
部の４辺の任意の場所でもよいが、本実施例のように４
隅とするのが最も安定がよい。足部材の取付方法は、結
束、溶接または溶接棒を使用しない溶着等公知方法を用
いればよいが、溶接又は溶着とするのが簡単で確実であ
り、コンクリート投入の際の衝撃にも十分耐え得る強度
を確保できる。足部材は、鉄筋を組立てるときに同時に
取り付けられるので、製造ラインにおいては、むしろス
ペーサーを取り付ける手間がなく省力化となる。本発明
方法に係るコンクリート製品は、本実施例のような四角
形状に限らず、円形等任意の形状に応用できることはも
ちろんである。また、本実施例においては足部材として
円形断面の鉄筋を用いているが、足部材の断面形状は十
分な強度を確保できることを条件に任意である。The present invention will be described in detail below with reference to the drawings. FIG. 1 shows a mold 1 in the process of manufacturing a concrete groove cover.
FIG. 6 is a top view of the reinforcing bar 2 assembled inside, which is mounted. The rebar is welded in a mesh shape at D10. At the four corners of the peripheral edge portion, foot members 3 each having a 6-mm thick rebar bent in a V shape are fixed downward by welding. FIG. 2 is a sectional view showing the portion. A thin resin cap 4 is fitted on the tip of the foot member 3 and is in contact with a corner portion 5 of the mold 1. The tip of the foot member was covered with a cap in order to prevent rust when exposed from the concrete surface. The same effect can be obtained by applying paint. The number of foot members may theoretically be three, but it is preferable to set four or more because the stability is good. The position of providing the foot member may be any position on the four sides of the peripheral edge portion, but as in the present embodiment, it may be 4
The corner is the most stable. The foot member may be attached by a known method such as binding, welding or welding without using a welding rod, but welding or welding is simple and reliable, and can sufficiently withstand impact when concrete is poured. The strength can be secured. Since the foot members are attached at the same time when the reinforcing bars are assembled, it is rather labor-saving to attach the spacers in the manufacturing line. It goes without saying that the concrete product according to the method of the present invention can be applied not only to the rectangular shape as in this embodiment, but also to any shape such as a circle. Further, in the present embodiment, a reinforcing bar having a circular cross section is used as the foot member, but the cross sectional shape of the foot member is arbitrary provided that sufficient strength can be secured.
【０００７】[0007]
【発明の効果】本発明は、組立てた鉄筋を、鉄を主成分
とする金属棒状体の足部材により保持するので、鉄を主
成分とする金属とコンクリートの熱膨張率がほぼ等しい
ことから、コンクリートと足部材の間に隙間を生じるこ
とがなく、水分が侵入する恐れがない。足部材の先端は
型枠隅角部に当接させるので、組立てた鉄筋は水平方向
にも拘束され、コンクリートを投入するときの衝撃等で
鉄筋が水平方向に移動する恐れがなく所望の鉄筋のかぶ
り厚を確保できる。足部材は、鉄筋を組立てるときに同
時に取り付けられるので、製造ラインにおいては、むし
ろスペーサーを取り付ける手間がなく省力化となる。According to the present invention, since the assembled rebar is held by the foot member of the metal rod-shaped body containing iron as a main component, the coefficient of thermal expansion of the metal containing iron as a main component and the concrete are substantially equal to each other. There is no gap between the concrete and the foot member, and there is no risk of water entering. Since the tips of the foot members are brought into contact with the corners of the formwork, the assembled rebar is also restrained in the horizontal direction, and there is no risk of the rebar moving in the horizontal direction due to the impact when concrete is poured in, etc. The cover thickness can be secured. Since the foot members are attached at the same time when the reinforcing bars are assembled, it is rather labor-saving to attach the spacers in the manufacturing line.
【図１】溝蓋の型枠に組立てた鉄筋を装着したところの
上面図である。FIG. 1 is a top view showing a state where a rebar that has been assembled is attached to a frame of a groove cover.
【図２】溝蓋の型枠に組立てた鉄筋を装着したところの
要部断面図である。FIG. 2 is a cross-sectional view of an essential part of the assembled rebar mounted on the frame of the groove lid.
１ 型枠 ２ 鉄筋 ３ 足部材 ４ キャップ ５ 隅角部 1 Formwork 2 Reinforcing bar 3 Foot member 4 Cap 5 Corner
Claims (3)
ートを投入して硬化後に脱型するコンクリート製品製造
過程において、組立てた鉄筋の周端部に鉄を主成分とす
る金属棒状体をへ字状に折曲げた足部材をその先端が型
枠隅角部に当接するごとく下向きに固定し、該足部材に
より鉄筋を型枠内に保持することを特徴とするコンクリ
ート製品製造過程における型枠内の鉄筋保持方法1. In the process of manufacturing a concrete product, in which assembled rebars are mounted in a formwork, concrete is put into the formwork, and then the mold is demolded after hardening, a metal rod-shaped body containing iron as a main component is formed at the peripheral end of the assembled rebars. A formwork in a concrete product manufacturing process, characterized in that a leg member bent in a letter shape is fixed downward so that its tip comes into contact with a corner portion of the formwork, and the rebar is held in the formwork by the foot member. Reinforcing method inside
定する請求項１のコンクリート製品製造過程における型
枠内の鉄筋保持方法2. A method for holding a reinforcing bar in a formwork in a concrete product manufacturing process according to claim 1, wherein the foot member is fixed to the reinforcing bar by welding or welding.
請求項１または請求項２のコンクリート製品製造過程に
おける型枠内の鉄筋保持方法3. A method for holding a reinforcing bar in a mold in the concrete product manufacturing process according to claim 1 or 2, wherein a resin cap is fitted on the tip of the foot member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3287234A JPH0790543B2 (en) | 1991-10-08 | 1991-10-08 | Reinforcing Bar Retaining Method in Form during Concrete Product Manufacturing Process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3287234A JPH0790543B2 (en) | 1991-10-08 | 1991-10-08 | Reinforcing Bar Retaining Method in Form during Concrete Product Manufacturing Process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0596526A true JPH0596526A (en) | 1993-04-20 |
| JPH0790543B2 JPH0790543B2 (en) | 1995-10-04 |
Family
ID=17714772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3287234A Expired - Lifetime JPH0790543B2 (en) | 1991-10-08 | 1991-10-08 | Reinforcing Bar Retaining Method in Form during Concrete Product Manufacturing Process |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0790543B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3046192U (en) * | 1997-08-11 | 1998-02-24 | 株式会社金子製作所 | Reinforcement structure for concrete products |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5719035A (en) * | 1980-07-10 | 1982-02-01 | Mitsubishi Oil Co Ltd | Manufacture of adsorbing material |
-
1991
- 1991-10-08 JP JP3287234A patent/JPH0790543B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5719035A (en) * | 1980-07-10 | 1982-02-01 | Mitsubishi Oil Co Ltd | Manufacture of adsorbing material |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3046192U (en) * | 1997-08-11 | 1998-02-24 | 株式会社金子製作所 | Reinforcement structure for concrete products |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0790543B2 (en) | 1995-10-04 |
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