JPH0949321A - Cast-in-place concrete form and its shaft leg covering pipe - Google Patents
Cast-in-place concrete form and its shaft leg covering pipeInfo
- Publication number
- JPH0949321A JPH0949321A JP22258595A JP22258595A JPH0949321A JP H0949321 A JPH0949321 A JP H0949321A JP 22258595 A JP22258595 A JP 22258595A JP 22258595 A JP22258595 A JP 22258595A JP H0949321 A JPH0949321 A JP H0949321A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- concrete
- cast
- covering pipe
- place concrete
- 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
Landscapes
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、現場打ちコンク
リート型枠に関するもので、枠パネル（コンパネ）を所
定位置に保持するために用いられるセパレータボルト
（セパまたは丸セパと通称されている）の端部に、枠パ
ネルを固定する構造に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cast-in-place concrete formwork, which has ends of separator bolts (commonly called "separator" or "round separator") used for holding a frame panel (control panel) at a predetermined position. The present invention relates to a structure for fixing a frame panel to a section.
【０００２】[0002]
【従来の技術】現場打ちのコンクリート構造物は、コン
クリート躯体内に埋設される補強鉄筋を組んだ後、これ
を枠パネルで囲んでコンクリートを流し込むキャビティ
を形成し、このキャビティにコンクリートを流し込んで
固化した後、枠パネルを取り除くことによって構築され
る。組み立てた枠パネルの間隔を保持し、キャビティに
打設されたコンクリートの圧力を受けるために、セパレ
ータボルトが用いられる。2. Description of the Related Art A cast-in-place concrete structure is constructed by constructing a reinforcing bar to be embedded in a concrete body, surrounding it with a frame panel to form a cavity into which the concrete is poured, and then pouring the concrete into the cavity to solidify it. After that, it is constructed by removing the frame panel. Separator bolts are used to keep the assembled frame panels spaced and to receive the pressure of the concrete cast into the cavities.
【０００３】具体的構造はたとえば図３に示すようなも
ので、セパレータボルト１の端部に設けられたネジにロ
ングナット２を介してスタッド材３を装着し、このスタ
ッド材に挿通した受部材４と、締結ナット５とで枠パネ
ル６を挟持固定して、枠パネル６の位置を保持するとと
もに、キャビティ７にコンクリートが流し込まれたとき
のコンクリートの圧力を、セパレータボルト１の引張力
で保持するのである。キャビティ７内のコンクリートが
固化したら、締結ナット５を外して枠パネル６を取り外
し、さらにスタッド材３をロングナット２から抜き取
り、抜き取った後の孔にモルタルを埋めて躯体表面を整
えるのである。セパレータボルト１とロングナット２と
は、コンクリート躯体内に埋設されたままとなる。A concrete structure is, for example, as shown in FIG. 3, in which a stud member 3 is attached to a screw provided at an end portion of a separator bolt 1 via a long nut 2 and is inserted into the stud member. 4 and the fastening nut 5 sandwich and fix the frame panel 6 to hold the position of the frame panel 6 and to hold the pressure of the concrete when the concrete is poured into the cavity 7 by the tensile force of the separator bolt 1. To do. When the concrete in the cavity 7 is solidified, the fastening nut 5 is removed, the frame panel 6 is removed, the stud material 3 is removed from the long nut 2, and the hole after the removal is filled with mortar to prepare the body surface. The separator bolt 1 and the long nut 2 remain embedded in the concrete body.
【０００４】スタッド材３の周囲にコンクリートが付着
すると、コンクリートが固化した後スタッド材３を抜き
取ることができなくなる。そこでスタッド材３を被覆す
る被覆パイプ８をロングナット２と受部材４との間に装
着する。スタッド材３のロングナット２へのねじ込み深
さ及びスタッド材３上での受部材４の位置は、スタッド
材３の両端にネジを転造で成形する際に、そのネジの根
元部分に同時に成形した高さの低い鍔１０、１１で規定
されており、従ってセパレータボルト１の長さにより、
対向する枠パネル６相互の間隔が決定される。なお図に
示した構造のものでは、枠パネル６の内側に成形される
コンクリート躯体の表面に凹凸模様を形成する発泡合成
樹脂製の化粧板１２が釘１３で貼着されている。このよ
うな化粧板１２を設けるときは、セパレータボルトを取
り付ける部分に被覆パイプ８が隙間なく嵌装される径の
貫通孔１４を設けている。When concrete adheres to the periphery of the stud material 3, it becomes impossible to remove the stud material 3 after the concrete is solidified. Therefore, the covering pipe 8 for covering the stud material 3 is mounted between the long nut 2 and the receiving member 4. The depth of screwing the stud material 3 into the long nut 2 and the position of the receiving member 4 on the stud material 3 are simultaneously formed at the root portion of the screw when the thread is formed at both ends of the stud material 3 by rolling. It is specified by the flanges 10 and 11 with low height, and therefore, depending on the length of the separator bolt 1,
The interval between the opposing frame panels 6 is determined. In the structure shown in the drawing, a decorative plate 12 made of expanded synthetic resin that forms an uneven pattern is attached to the surface of a concrete frame formed inside the frame panel 6 with nails 13. When such a decorative plate 12 is provided, a through hole 14 having a diameter that allows the covered pipe 8 to be fitted without a gap is provided in a portion to which the separator bolt is attached.
【０００５】被覆パイプ８は、コンクリート躯体を成形
した後取り除く必要があるので、軟質のものであること
が好ましいが、軟らか過ぎるとコンクリートの圧力によ
って潰れてしまう。しかし硬いとコンクリート躯体から
被覆パイプ８を取り除く作業に手間がかかる。そこで図
４に示すように、被覆パイプ８の内側に放射状に延びる
リブ１５を設けて、このリブの先端辺をスタッド材３の
外径に当接させて支持することにより、被覆パイプ８の
潰れを防止する構造が提唱されている。この構造のとき
は、リブ１５によってパイプ８の潰れがある程度防止さ
れるので、パイプの材料としてより軟質のものを用いる
ことができ、スタッド材３を抜き取った後パイプ８を抜
き取るようにすれば、パイプ８の抜き取り作業も比較的
容易にできる。Since the coated pipe 8 needs to be removed after the concrete skeleton has been molded, it is preferable that it is soft, but if it is too soft, it will be crushed by the pressure of the concrete. However, if it is hard, it takes time and effort to remove the covering pipe 8 from the concrete skeleton. Therefore, as shown in FIG. 4, a rib 15 extending radially is provided inside the covered pipe 8, and the tip side of this rib is brought into contact with and supported by the outer diameter of the stud member 3, whereby the covered pipe 8 is crushed. The structure which prevents is proposed. In this structure, the ribs 15 prevent the pipe 8 from being crushed to some extent, so that a softer material can be used as the material of the pipe. If the stud material 3 is extracted and then the pipe 8 is extracted, The pipe 8 can be pulled out relatively easily.
【０００６】[0006]
【発明が解決しようとする課題】しかしこのような支持
リブ１５を有する軟質の被覆パイプを用いたとき、パイ
プが局部的に押し潰されて、スタッド材３が支持リブの
間に入り込み、コンクリートが固化した後のスタッド材
３や被覆パイプ８の抜き取りが非常に困難になる現象が
生ずることが認められた。特にコンクリートを型枠内に
流し込むときに、そのコンクリートの流れに直接晒され
る部分の被覆パイプにこのような変形が起きやすく、コ
ンクリート中に混入している砂利が衝突して、被覆パイ
プ８を局部的に変形させ、このときスタッド材３が支持
リブ１５の間に嵌まり込むと、外力が解放されてもパイ
プが復元せず、パイプが潰れたままの状態でコンクリー
トが固化してしまうことが原因であると推察される。However, when a soft coated pipe having such supporting ribs 15 is used, the pipe is locally crushed and the stud material 3 enters between the supporting ribs, and concrete is crushed. It was confirmed that the phenomenon in which it becomes very difficult to extract the stud material 3 and the coated pipe 8 after solidification occurs. Especially when pouring concrete into a formwork, such deformation is likely to occur in the covered pipe of the portion directly exposed to the flow of concrete, and the gravel mixed in the concrete collides, so that the covered pipe 8 is localized. If the stud member 3 is fitted between the support ribs 15 at this time, the pipe may not be restored even if the external force is released, and the concrete may be solidified while the pipe is crushed. Inferred to be the cause.
【０００７】この発明は、上記新たな問題点の発見を起
因としてなされたもので、この問題を解決する簡単な技
術手段を提供しようとするものである。The present invention has been made on the basis of the discovery of the above new problems, and an object thereof is to provide a simple technical means for solving the problems.
【０００８】[0008]
【課題を解決するための手段】請求項１記載の発明は、
セパレータボルト１の先端にロングナット２を介して装
着したスタッド材３に、軸方向移動を規制した状態で挿
通された受部材４と締結ナット５とで枠パネル６が挟持
固定されており、ロングナット２と受部材４との間にス
タッド材３へのコンクリートの付着を防止する被覆パイ
プ８が挿通されている現場打ちコンクリート型枠におい
て、前記被覆パイプ８が内筒１７と外筒１８と両者を間
隔を隔てて一体に連結している複数の放射状リブ１５と
を備えた軟質合成樹脂製の二重構造パイプであることを
特徴とするものである。According to the first aspect of the present invention,
The frame panel 6 is clamped and fixed by the receiving member 4 and the fastening nut 5 which are inserted in the stud member 3 attached to the tip of the separator bolt 1 via the long nut 2 with the axial movement restricted. In a cast-in-place concrete formwork in which a covering pipe 8 for preventing adhesion of concrete to the stud material 3 is inserted between the nut 2 and the receiving member 4, the covering pipe 8 includes an inner cylinder 17 and an outer cylinder 18. Is a double-structured pipe made of a soft synthetic resin, which is provided with a plurality of radial ribs 15 that are integrally connected to each other at intervals.
【０００９】請求項２記載の現場打ちコンクリート型枠
の軸足被覆パイプは、内筒１７と外筒１８と両者を間隔
を隔てて一体に接続する複数の放射状リブ１５とを備え
た軟質合成樹脂の押出成形品からなるものである。A shaft foot covered pipe of a cast-in-place concrete form according to claim 2 is provided with a soft synthetic resin provided with an inner cylinder 17 and an outer cylinder 18 and a plurality of radial ribs 15 which integrally connect the both with an interval. It is made of an extruded product.
【００１０】[0010]
【作用】上記この発明の構造によれば、局部的に大きな
外力が加わって、被覆パイプ８が変形しても、放射状リ
ブ１５が屈曲するだけであり、内筒１７の存在により、
スタッド材３が変形した放射状リブ１５の間に嵌まり込
むということは起こり得ない。従ってコンクリート打設
時に砂利等が当接して、被覆パイプ８を局部的に変形さ
せたとしても、その後被覆パイプ８は復元して元の形状
に戻り、その後コンクリートが固化するので、被覆パイ
プ８が潰れたままコンクリートが固化するということが
起こらず、成形後にスタッド材３や被覆パイプ８の抜き
取りが困難になるということが起こらない。According to the structure of the present invention described above, even if a large external force is locally applied and the coated pipe 8 is deformed, the radial ribs 15 are only bent, and the presence of the inner cylinder 17 causes
It is impossible for the stud member 3 to be fitted between the deformed radial ribs 15. Therefore, even if the gravel or the like comes into contact with the concrete when the concrete is cast and locally deforms the coated pipe 8, the coated pipe 8 is restored to its original shape and the concrete is solidified thereafter. The concrete does not solidify while it is crushed, and the stud material 3 and the covered pipe 8 do not easily come out after molding.
【００１１】なお上記形状の被覆パイプは、押出成形に
よって経済的に生産することが可能である。The coated pipe having the above-mentioned shape can be economically produced by extrusion molding.
【００１２】[0012]
【実施例】図１及び図２はこの発明の実施例を示した図
である。この実施例は、図３で説明した従来構造のもの
にこの発明を採用したもので、以下従来構造と異なる部
分のみを説明する。1 and 2 are diagrams showing an embodiment of the present invention. In this embodiment, the present invention is applied to the conventional structure described with reference to FIG. 3, and only parts different from the conventional structure will be described below.
【００１３】ロングナット２と受部材４との間のスタッ
ド材３を覆うように嵌装される被覆パイプ８は、図２に
示すように内筒１７と外筒１８とを備えた二重構造のパ
イプで、内筒１７と外筒１８とは６枚の放射状リブ１５
により、間隔を隔てて連結されている。内筒１７の内径
は、スタッド材３に丁度嵌装される径とし、比較的薄肉
のものとする。リブ１５の厚さは使用される樹脂の軟ら
かさによって適宜決定されるべきものであるが、軟らか
い樹脂を用いてリブ１５を厚くすることによって、コン
クリートの圧力に耐える構造とするのがより良好であ
る。The covering pipe 8 fitted so as to cover the stud member 3 between the long nut 2 and the receiving member 4 has a double structure including an inner cylinder 17 and an outer cylinder 18, as shown in FIG. In the pipe, the inner cylinder 17 and the outer cylinder 18 have six radial ribs 15.
Are connected at intervals. The inner diameter of the inner cylinder 17 is a diameter that is just fitted to the stud member 3 and is relatively thin. The thickness of the rib 15 should be appropriately determined according to the softness of the resin used, but it is better to make the rib 15 thicker by using a soft resin so that the structure can withstand the pressure of concrete. is there.
【００１４】被覆パイプ８は、押出成形によって成形さ
れ、必要な長さに切断してスタッド材３に嵌装する。被
覆パイプ８は枠パネル６を固定したときの受部材４とロ
ングナット２との間隔より僅かに長くしておき、若干軸
方向に圧縮された状態で受部材４とロングナット２との
間に保持されるようにする。このようにして被覆パイプ
８の軸方向に若干応力を加えるようにすれば、被覆パイ
プ８と化粧板の貫通孔１４との密着性も良くなり、被覆
パイプ８の潰れに対する抵抗力も増大する。The coated pipe 8 is formed by extrusion molding, cut into a required length and fitted to the stud member 3. The covering pipe 8 is made slightly longer than the distance between the receiving member 4 and the long nut 2 when the frame panel 6 is fixed, and is slightly axially compressed between the receiving member 4 and the long nut 2. To be retained. By slightly applying stress in the axial direction of the coated pipe 8 in this way, the adhesion between the coated pipe 8 and the through hole 14 of the decorative plate is improved, and the resistance of the coated pipe 8 to crush is increased.
【００１５】本発明の被覆パイプ８を装着したスタッド
材を用いて枠パネル６を固定する手順及びコンクリート
固化後のスタッド材３や被覆パイプ８の取り外し作業
は、従来構造のものと同様な手順で行われる。The procedure of fixing the frame panel 6 by using the stud material with the coated pipe 8 of the present invention and the work of removing the stud material 3 and the coated pipe 8 after solidification of concrete are the same as those of the conventional structure. Done.
【００１６】[0016]
【発明の効果】以上説明したこの発明によれば、軸足に
装着した軟質の被覆パイプに、局部的に外力が加わった
ときにも、被覆パイプが潰れたままとなることがなく、
従って固化した後のコンクリート躯体から軸足のスタッ
ド材や被覆パイプを取り除く作業が面倒になる事態が発
生するのを防止できる。According to the present invention described above, even when an external force is locally applied to a soft coated pipe attached to a shaft foot, the coated pipe does not remain crushed,
Therefore, it is possible to prevent a situation in which the work of removing the stud material of the shaft foot and the covering pipe from the concrete body after solidification is troublesome.
【図１】実施例の型枠の部分拡大断面図FIG. 1 is a partially enlarged sectional view of a formwork of an embodiment.
【図２】実施例の被覆パイプの斜視図FIG. 2 is a perspective view of a coated pipe according to an embodiment.
【図３】従来構造の型枠の部分拡大断面図FIG. 3 is a partially enlarged sectional view of a formwork having a conventional structure.
【図４】従来構造の被覆パイプの断面図FIG. 4 is a cross-sectional view of a conventional coated pipe.
１ セパレータボルト ２ ロングナット ３ スタッド材 ４ 受部材 ５ 締結ナット ６ 枠パネル ８ 被覆パイプ 15 支持リブ 17 内筒 18 外筒 1 Separator bolt 2 Long nut 3 Stud material 4 Receiving member 5 Fastening nut 6 Frame panel 8 Covered pipe 15 Support rib 17 Inner cylinder 18 Outer cylinder
Claims (2)
ット(2) を介して装着したスタッド材(3) に軸方向移動
を規制した状態で挿通された受部材(4) と締結ナット
(5) とで枠パネル(6) が挟持固定されており、ロングナ
ット(2) と受部材(4) との間にスタッド材(3) へのコン
クリートの付着を防止する被覆パイプ(8) が挿通されて
いる現場打ちコンクリート型枠において、前記被覆パイ
プ(8) が内筒(17)と外筒(18)と両者を間隔を隔てて一体
に連結している複数の放射状リブ(15)とを備えた軟質合
成樹脂製の二重構造パイプであることを特徴とする、現
場打ちコンクリート型枠。1. A receiving member (4) and a fastening nut which are inserted into a stud member (3) attached to a tip of a separator bolt (1) through a long nut (2) in a state in which axial movement is restricted.
The frame panel (6) is sandwiched and fixed by (5), and the covered pipe (8) that prevents concrete from adhering to the stud material (3) between the long nut (2) and the receiving member (4). In the cast-in-place concrete formwork in which is inserted, the covered pipe (8) and the inner cylinder (17) and the outer cylinder (18) are connected to each other with a plurality of radial ribs (15). A cast-in-place concrete formwork, which is a double-structured pipe made of soft synthetic resin with and.
て一体に接続する複数の放射状リブ(15)とを備えた軟質
合成樹脂の押出成形品からなる、現場打ちコンクリート
型枠の軸足被覆パイプ。2. A cast-in-place product made of a soft synthetic resin extruded product having an inner cylinder (17), an outer cylinder (18), and a plurality of radial ribs (15) integrally connecting the inner cylinder (17) and the outer cylinder (18) at intervals. Shaft foot covered pipe for concrete formwork.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22258595A JP2732372B2 (en) | 1995-08-07 | 1995-08-07 | Cast-in-place concrete formwork and its axle-covered pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22258595A JP2732372B2 (en) | 1995-08-07 | 1995-08-07 | Cast-in-place concrete formwork and its axle-covered pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0949321A true JPH0949321A (en) | 1997-02-18 |
| JP2732372B2 JP2732372B2 (en) | 1998-03-30 |
Family
ID=16784780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22258595A Expired - Lifetime JP2732372B2 (en) | 1995-08-07 | 1995-08-07 | Cast-in-place concrete formwork and its axle-covered pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2732372B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010053993A (en) * | 2008-08-29 | 2010-03-11 | Daiwa Kasei Kogyo Kk | Two-member assembling structure |
| JP2016217059A (en) * | 2015-05-25 | 2016-12-22 | 清水建設株式会社 | Steel plate concrete structure |
-
1995
- 1995-08-07 JP JP22258595A patent/JP2732372B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010053993A (en) * | 2008-08-29 | 2010-03-11 | Daiwa Kasei Kogyo Kk | Two-member assembling structure |
| JP2016217059A (en) * | 2015-05-25 | 2016-12-22 | 清水建設株式会社 | Steel plate concrete structure |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2732372B2 (en) | 1998-03-30 |
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