JP2534681Y2 - Precast beam formwork - Google Patents
Precast beam formworkInfo
- Publication number
- JP2534681Y2 JP2534681Y2 JP1990053167U JP5316790U JP2534681Y2 JP 2534681 Y2 JP2534681 Y2 JP 2534681Y2 JP 1990053167 U JP1990053167 U JP 1990053167U JP 5316790 U JP5316790 U JP 5316790U JP 2534681 Y2 JP2534681 Y2 JP 2534681Y2
- Authority
- JP
- Japan
- Prior art keywords
- formwork
- beam form
- beam formwork
- shear reinforcement
- shear
- 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 - Lifetime
Links
Landscapes
- Rod-Shaped Construction Members (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Description
【考案の詳細な説明】 〔産業上の利用分野〕 この考案は、鉄筋コンクリート工事において、梁を構
築するために打ち込むコンクリートを、所定の形状や寸
法に保持する梁型枠に関する。[Detailed description of the invention] [Industrial application field] The invention relates to a beam formwork for holding concrete to be poured into a reinforced concrete construction to have a predetermined shape and dimensions in order to construct a beam.
従来の梁型枠は、通常、梁型枠と剪断補強筋とが別体
になっている。In the conventional beam formwork, the beam formwork and the shear reinforcement are usually separate bodies.
そして、従来の型枠工事は、まず、構築する梁の形状
に合わせてせき板を組み立てる。その後に、主筋に剪断
補強筋を取り付け、次に、せき板と鉄筋の間に被り確保
のためのスペーサーを挟み込み、せき板の間隔を確保す
るためのセパレーターを取り付け、締め付け金具等の支
保工により固定して梁型枠を構成する。その後に、コン
クリートを打設し、そのコンクリートが固まった後に前
記せき板や支保工を取り外して梁を構築する。Then, in the conventional formwork, first, a dam is assembled in accordance with the shape of the beam to be constructed. After that, attach the shear reinforcement to the main reinforcement, then insert a spacer to secure the cover between the crevice plate and the reinforcing bar, install a separator to secure the gap between the crevice plates, and support by tightening brackets etc. The beam form is fixed. After that, concrete is poured, and after the concrete is hardened, the dam and the support are removed to construct a beam.
また、梁型枠と剪断補強筋が一体となっているプレキ
ャスト型枠もあり、この場合には、剪断補強筋は前記梁
型枠の肉厚内部を、梁型枠の内面に沿って貫通して配設
された構成になっていた。There is also a precast formwork in which the beam formwork and the shear reinforcement are integrated. In this case, the shear reinforcement penetrates the inside of the thickness of the beam form along the inner surface of the beam form. Had been arranged.
しかしながら、従来の剪断補強筋と別体の梁型枠を使
用した場合には、現場において、主筋に剪断補強筋を結
束したり、鉄筋とせき板の間にスペーサーを取り付ける
等、上記説明したような作業が必要であるため、型枠工
事が煩雑になるという問題があった。However, if a beam formwork separate from the conventional shear reinforcement is used, work described above such as tying the shear reinforcement to the main reinforcement or attaching a spacer between the reinforcement and the dam plate at the site. However, there is a problem that the formwork is complicated.
また、型枠の中に剪断補強筋が納まらなかったり、型
枠工事中に、鉄筋とせき板の間に設置したスペーサーが
外れて、かぶりが適切でなくなったりすることがあると
いう問題もあった。In addition, there were also problems that the shear reinforcing bars could not be accommodated in the formwork, and that the spacers installed between the reinforcing bars and the dams were detached during the work of the formwork, so that the fogging became inappropriate.
さらに、梁型枠と剪断補強筋が一体になっている梁型
枠を使用した場合には、被りは確実に確保できるが、梁
型枠の肉厚が被りを確保する厚さだけでなく剪断補強筋
を保持する厚さも必要になるため、梁型枠の肉厚が相当
厚くなり型枠自体が重くなるという問題があった。Furthermore, when using a beam formwork in which the beam formwork and the shear reinforcement are integrated, the covering can be reliably secured, but the thickness of the beam formwork is not only the thickness to secure the covering but also the shearing. Since a thickness for holding the reinforcing bar is also required, there is a problem that the thickness of the beam form is considerably increased and the form itself becomes heavy.
この考案は、主筋への剪断補強筋の結束を不要にし、
かつ確実に被りを確保して、軽量の梁型枠を提供するこ
とを目的にしている。This invention eliminates the need to bind shear reinforcement to the main bar,
It is another object of the present invention to provide a lightweight beam formwork that reliably secures cover.
上記目的を解決するために、この考案のプレキャスト
梁型枠は、断面形状がU字形をなす梁型枠の内面に、こ
の梁型枠と一体のリブを突設するとともに、剪断補強筋
を前記梁型枠内面に沿い且つ前記リブ内を貫通させて配
設したことを特徴としている。In order to solve the above-mentioned object, the precast beam form of the present invention has a rib formed integrally with the beam form on the inner surface of the beam form having a U-shaped cross section, and has a shear reinforcing bar. It is characterized by being arranged along the inner surface of the beam formwork and penetrating the inside of the rib.
本考案の梁型枠を使用した型枠工事は、現場で、梁型
枠を所定の位置に配設し、必要に応じてキャップタイを
取り付けてコンクリートを打設する。前記梁型枠の外面
は構築した梁の表面を形成する。In the formwork construction using the beam formwork of the present invention, the beam formwork is arranged at a predetermined position on the site, and a cap tie is attached as necessary to cast concrete. The outer surface of the beam form forms the surface of the constructed beam.
ここで、前記梁型枠の内面には予め剪断補強筋が配設
されているために、主筋に剪断補強筋を結束する必要が
なく、また、前記剪断補強筋は梁型枠の外面から被りの
距離だけおいて、内面に突設されているリブに固定され
ているために、スペーサーを設置して被りを確保する必
要がない。さらに、梁型枠は構築した梁の一部になるた
めに、梁型枠の取り外し作業は足場やサポートの解体作
業だけになる。さらにまた、前記梁型枠は、肉厚が被り
の厚さより薄く成形されていることにより軽量になり、
梁型枠の運搬や設置作業を楽に行える。Here, since the shear reinforcement is arranged in advance on the inner surface of the beam form, it is not necessary to bind the shear reinforcement to the main reinforcement, and the shear reinforcement is covered from the outer surface of the beam form. Is fixed to the rib protruding from the inner surface only at the distance of, there is no need to secure a cover by installing a spacer. Furthermore, since the beam formwork becomes a part of the constructed beam, the work of removing the beam formwork is only the work of dismantling the scaffolds and supports. Furthermore, since the beam form is formed to be thinner than the thickness of the covering, the beam form becomes lighter,
The beam formwork can be easily transported and installed.
以下、この考案の実施例を図面に基づいて説明する。
第1図,第2図はこの考案のプレキャスト梁型枠1であ
る。Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 and 2 show a precast beam formwork 1 according to the present invention.
まず、構成を説明すると、この梁型枠1は断面形状が
U字形をなして上方を開放しており、その内面には、両
側面1aおよび底面1bのそれぞれの中央に、長手方向に沿
ってリブ2,3が一体に突設されている。また、前記梁型
枠1の内面には、前記内面に沿って、前記三つのリブ2,
3をそれぞれ横断するように貫通し、且つ、両端部が折
れ曲がったU字形の剪断補強筋4が配設されている。First, the structure will be described. This beam form 1 has a U-shaped cross section and is open at the top, and its inner surface is provided along the longitudinal direction at the center of each of the side surfaces 1a and the bottom surface 1b. Ribs 2 and 3 are integrally provided. Also, on the inner surface of the beam form 1, along the inner surface, the three ribs 2,
U-shaped shear reinforcing bars 4 are provided so as to penetrate transversely across each of 3 and both ends are bent.
ここで、前記梁型枠1及びリブ2,3は無機質材料を使
用して製作され、梁型枠1の肉厚は5〜20mm程度の薄さ
で成形され、また、リブ2,3の突出高さは25〜35mm程度
に成形されて、剪断補強筋4の貫通位置を梁型枠1の外
面から40mm離れるようにして、40mmの被りを確保してい
る。なお、これらの数値は一例であるから、各部を他の
数値とすることができることは勿論である。Here, the beam form 1 and the ribs 2 and 3 are manufactured using an inorganic material, and the thickness of the beam form 1 is formed to be as thin as about 5 to 20 mm. The height is formed to about 25 to 35 mm, and the penetrating position of the shear reinforcement 4 is set to be 40 mm away from the outer surface of the beam formwork 1 to secure a cover of 40 mm. Since these numerical values are merely examples, it is a matter of course that each unit can be set to other numerical values.
前記構成の梁型枠1と剪断補強筋4が一体になった型
枠を使用した型枠工事は、第3図に示すように、まず、
図示していない足場やサポート等を組んで、梁型枠1の
内部に主筋5が納まるように梁型枠1を所定の位置に配
置して図示しない主柱間に固定する。この状態で、必要
に応じてキャップタイを取り付けて、梁型枠1内にコン
クリートを打設し、コンクリートが固まったら足場やサ
ポートを解体して梁の構築が終了する。このとき、梁型
枠1は梁の一部となり、梁型枠1の外面が梁の表面を形
成する。As shown in FIG. 3, the formwork using the formwork in which the beam formwork 1 and the shear reinforcing bar 4 having the above-mentioned structure are integrated, first,
A beam scaffold, a support, and the like (not shown) are assembled, and the beam form 1 is arranged at a predetermined position so that the main reinforcement 5 is accommodated inside the beam form 1, and fixed between main columns (not shown). In this state, a cap tie is attached as necessary, concrete is poured into the beam formwork 1, and when the concrete is hardened, the scaffold and the support are dismantled, and the construction of the beam is completed. At this time, the beam form 1 becomes a part of the beam, and the outer surface of the beam form 1 forms the surface of the beam.
以上のように、梁型枠1の内面には予め剪断補強筋4
が配設されているために、主筋5に剪断補強筋4を結束
する必要がない。また、前記剪断補強筋4は梁型枠1の
外面から被りの距離だけおいて、内面に突設されている
リブに固定されているために、スペーサーを設置して被
りを確保する必要がない。As described above, the shear reinforcement 4
Is arranged, there is no need to bind the shear reinforcement 4 to the main reinforcement 5. Further, since the shear reinforcing bars 4 are fixed to the ribs protruding from the inner surface at a distance from the outer surface of the beam form 1, there is no need to secure a cover by installing a spacer. .
また、梁型枠1は構築した梁の一部になるために、型
枠工事の解体作業は足場やサポートの解体作業だけにな
る。Further, since the beam formwork 1 becomes a part of the constructed beam, the demolition work of the formwork is only the demolition work of the scaffold and the support.
さらに、前記梁型枠1の肉厚は、被りの厚さよりも薄
く成形できるために、梁型枠1は軽量になり、梁型枠1
の運搬や設置作業を楽に行える。Further, the thickness of the beam form 1 can be formed smaller than the thickness of the covering, so that the beam form 1 becomes lighter and the beam form 1
Can be easily transported and installed.
なお、前記例では、リブ2,3を梁型枠1の両側面1aと
底面1bに設けたが、剪断補強筋4が固定されるのであれ
ば、両側面1aの二箇所だけであってもよいし、リブ2,3
を設ける位置も側面1aの上部等に設けてもかまわない。In the above example, the ribs 2 and 3 are provided on both side surfaces 1a and the bottom surface 1b of the beam formwork 1. However, if the shear reinforcement 4 is fixed, only two places on both side surfaces 1a may be used. Good, ribs 2,3
May be provided at the upper part of the side surface 1a or the like.
また、第4図,第5図に示すように、所定の間隔をお
いて複数のリブ2を、梁型枠1の長手方向とは直交する
方向に前記梁型枠1の内面に沿って突設させ、そのリブ
2内を縦断するようにU字形の剪断補強材4を貫通させ
てもよい。この場合には、梁型枠1と一体になっている
剪断補強筋4とは別に、現場で、別体の剪断補強筋を梁
型枠1内に配設してもよい。Also, as shown in FIGS. 4 and 5, a plurality of ribs 2 are projected at predetermined intervals along the inner surface of the beam form 1 in a direction orthogonal to the longitudinal direction of the beam form 1. And a U-shaped shear reinforcing member 4 may be penetrated so as to traverse the inside of the rib 2. In this case, separately from the shear reinforcement 4 integrated with the beam form 1, a separate shear reinforcement may be provided in the beam form 1 at the site.
さらに、リブ2,3は梁型枠1の内面の長手方向及びこ
れに直交する方向の両方向に延在させて設けるなど、梁
型枠1を強化するために、複数方向にリブ2,3を設けて
もよい。Further, the ribs 2, 3 are provided in a plurality of directions in order to strengthen the beam form 1 such that the ribs 2, 3 are provided so as to extend in both the longitudinal direction of the inner surface of the beam form 1 and the direction perpendicular thereto. It may be provided.
以上説明してきたように、この考案のプレキャスト梁
型枠を使用すると、現場で、主筋に剪断補強筋を結束し
たり、被り確保のためのスペーサーの取り付けたりする
作業を行う必要がなくなるため、型枠工事が簡素化さ
れ、かつ、所定の位置に剪断補強筋が納まり、さらに、
確実に被りを確保できるという効果がある。As described above, the use of the precast beam formwork of the present invention eliminates the need to tie the shear reinforcing bars to the main bars or attach spacers to secure the covering at the site. The frame work is simplified, and the shear reinforcement fits in place,
There is an effect that the cover can be surely secured.
また、梁型枠の肉厚が薄くなることにより型枠自体が
軽量になり、型枠の運搬や設置作業を楽にするという効
果もある。In addition, since the thickness of the beam form is reduced, the form itself is reduced in weight, and there is also an effect that the form is easily transported and installed.
【図面の簡単な説明】 第1図は第1の実施例を示す断面図、第2図は同II−II
線断面図、第3図は主筋を内部に配置した状態の正面
図、第4図は第2の実施例を示す断面図、第5図は同上
面図である。 1……梁型枠、2,3……リブ、4……剪断補強筋、5…
…主筋BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a sectional view showing a first embodiment, and FIG.
FIG. 3 is a front view showing a state in which main bars are arranged inside, FIG. 4 is a cross-sectional view showing the second embodiment, and FIG. 5 is a top view of the same. 1 ... beam form, 2,3 ... rib, 4 ... shear reinforcement, 5 ...
… Main line
フロントページの続き (72)考案者 上床 実 東京都新宿区西新宿1丁目25番1号 大 成建設株式会社内 (72)考案者 田村 幸一 東京都新宿区西新宿1丁目25番1号 大 成建設株式会社内 (72)考案者 上田 一男 東京都新宿区西新宿1丁目25番1号 大 成建設株式会社内 (72)考案者 川井 泰彦 東京都新宿区西新宿1丁目25番1号 大 成建設株式会社内 (72)考案者 佐々木 晴夫 東京都新宿区西新宿1丁目25番1号 大 成建設株式会社内 (56)参考文献 特開 平2−80746(JP,A)Continuing on the front page (72) Minoru Kamikoto 1-25-1, Nishishinjuku, Shinjuku-ku, Tokyo Taisei Construction Co., Ltd. (72) Koichi Tamura 1-25-1, Nishishinjuku, Shinjuku-ku, Tokyo Taisei Construction Co., Ltd. (72) Inventor Kazuo Ueda 1-25-1 Nishi-Shinjuku, Shinjuku-ku, Tokyo Taisei Construction Co., Ltd. (72) Inventor Yasuhiko Kawai 1-25-1 Nishi-Shinjuku, Shinjuku-ku, Tokyo Taisei Within Construction Co., Ltd. (72) Inventor Haruo Sasaki 1-25-1, Nishi Shinjuku, Shinjuku-ku, Tokyo Taisei Construction Co., Ltd. (56) References JP-A-2-80746 (JP, A)
Claims (1)
この梁型枠と一体のリブを突設するとともに、剪断補強
筋を前記梁型枠内面に沿い且つ前記リブ内を貫通させて
配設したことを特徴とするプレキャスト梁型枠。1. An inner surface of a beam formwork having a U-shaped cross section,
A precast beam formwork, wherein a rib integral with the beam formwork is protruded, and a shear reinforcement is provided along the inner surface of the beam formwork and penetrates through the rib.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1990053167U JP2534681Y2 (en) | 1990-05-22 | 1990-05-22 | Precast beam formwork |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1990053167U JP2534681Y2 (en) | 1990-05-22 | 1990-05-22 | Precast beam formwork |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0411804U JPH0411804U (en) | 1992-01-30 |
JP2534681Y2 true JP2534681Y2 (en) | 1997-05-07 |
Family
ID=31574123
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1990053167U Expired - Lifetime JP2534681Y2 (en) | 1990-05-22 | 1990-05-22 | Precast beam formwork |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2534681Y2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4934122A (en) * | 1972-08-02 | 1974-03-29 | ||
JP6161228B1 (en) * | 2017-02-14 | 2017-07-12 | 槇谷 榮次 | Seismic reinforcement structure for concrete structures |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0280746A (en) * | 1988-09-14 | 1990-03-20 | Supankuriito Seizo Kk | Precast beam |
-
1990
- 1990-05-22 JP JP1990053167U patent/JP2534681Y2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH0411804U (en) | 1992-01-30 |
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