JPH01207551A - Reinforcing metal piece for porous beam in ferroconcrete - Google Patents
Reinforcing metal piece for porous beam in ferroconcreteInfo
- Publication number
- JPH01207551A JPH01207551A JP2874988A JP2874988A JPH01207551A JP H01207551 A JPH01207551 A JP H01207551A JP 2874988 A JP2874988 A JP 2874988A JP 2874988 A JP2874988 A JP 2874988A JP H01207551 A JPH01207551 A JP H01207551A
- Authority
- JP
- Japan
- Prior art keywords
- metal
- reinforcing metal
- reinforcing
- ferroconcrete
- 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.)
- Pending
Links
- 239000002184 metal Substances 0.000 title claims abstract description 38
- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 27
- 239000011150 reinforced concrete Substances 0.000 claims description 8
- 239000004567 concrete Substances 0.000 abstract description 9
- 230000002787 reinforcement Effects 0.000 abstract description 4
- 238000005336 cracking Methods 0.000 abstract description 3
- 229910000831 Steel Inorganic materials 0.000 abstract 2
- 238000009432 framing Methods 0.000 abstract 2
- 239000010959 steel Substances 0.000 abstract 2
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000003466 welding Methods 0.000 description 7
- 238000009415 formwork Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000003860 storage Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
Landscapes
- Reinforcement Elements For Buildings (AREA)
Abstract
Description
【発明の詳細な説明】 （１）産業上の利用分野 本発明は鉄筋コンクリート有孔梁の補強金具に関する。[Detailed description of the invention] (1) Industrial application fields The present invention relates to reinforcing metal fittings for reinforced concrete perforated beams.
（２）従来の技術
従来コンクリート梁に開孔する場合、該開孔の周縁が強
度的に弱くなるため、該周縁に補強金具を設けることが
一般に行われており、該補強金具として、第９図の如く
、内外に多重の無端状の金属製環状体（ａ）・・・（ａ
）と、これらの環状体（ａ）・・・（ａ）を互いに連結
する複数の放射状の連結杆（ｂ）・・・（ｂ）とからな
るものが知られている（特公昭５９−１０４５４号）。(2) Prior Art Conventionally, when a hole is drilled in a concrete beam, the strength of the periphery of the hole becomes weak, so reinforcing metal fittings are generally provided around the periphery. As shown in the figure, multiple endless metal rings inside and outside (a)...(a
) and a plurality of radial connecting rods (b)...(b) that connect these annular bodies (a)...(a) to each other (Japanese Patent Publication No. 59-10454). issue).
（３）発明が解決しようとする問題点
しかし、上記の補強金具は、放射状の連結杆（ｂ）・・
・（ｂ）により環状体（ａ）・・・（ａ）が溶接その他
の手段で互いに結着されているので、鉄筋コンクリート
梁の開孔中心から放射状に発生するひび割れ等に対して
は、環状体（ａ）・・・（ａ）のみに応力が作用し、十
分熱めせん断ひび割れ等を補強することが困難であり、
又多数の連結杆を環状体に結着するため、溶接に要する
工数を要し製作が煩雑となる問題点があった。(3) Problems to be solved by the invention However, the above-mentioned reinforcing metal fittings are radial connecting rods (b)...
・As per (b), the annular body (a)... (a) are connected to each other by welding or other means, so the annular body can be used to prevent cracks, etc. that occur radially from the center of the hole in the reinforced concrete beam. (a)...Stress acts only on (a), making it difficult to sufficiently reinforce thermal shear cracks, etc.
In addition, since a large number of connecting rods are connected to the annular body, there is a problem in that the welding process requires a lot of man-hours and the manufacturing process is complicated.
本発明は、これらの問題点を解消し、鉄筋コンクリート
梁の開孔部に発生するひび割れを防止すると共に、製作
が容易で、且つ運搬差に保管等が極めて容易な補強金具
を提供することを目的とする。The purpose of the present invention is to solve these problems and provide a reinforcing metal fitting that prevents cracks from occurring in the openings of reinforced concrete beams, is easy to manufacture, and is extremely easy to transport and store. shall be.
（４）問題点を解決するための手段
上記の目的を達成するため、本発明は、少くとも１個の
方形の金属製枠体の長辺及び短辺とに、金属製多角状体
又は環状体とを互いに連結したことを特徴とする。(4) Means for Solving the Problems In order to achieve the above object, the present invention provides metal polygonal or annular shaped bodies on the long sides and short sides of at least one rectangular metal frame. It is characterized by being connected to the body.
（５）作用
この補強金具を鉄筋コンクリート梁の有孔部の鉄筋間に
挿入しその鉄筋間を補強するあばら筋等に針金等で取付
け、中央開口部にスリーブを挿入緊持し、コンクリート
を打設することにより、鉄筋コンクリート有孔梁が完成
する。(5) Function: Insert this reinforcing fitting between the reinforcing bars in the perforated part of the reinforced concrete beam, attach it to the stirrups, etc. that reinforce between the reinforcing bars with wire, etc., insert the sleeve into the center opening, tighten it, and pour concrete. By doing this, the reinforced concrete perforated beam is completed.
そして、曲げひび割れ及び斜めせん断ひび割れ等に対し
て、方形の枠体と多角状体又は環状体とが相乗して補強
効果をあげる。The rectangular frame and the polygonal or annular body work together to provide a reinforcing effect against bending cracks, diagonal shear cracks, and the like.
なおこの補強金具は、外周に突出部を有しないから運搬
、保管等に対して極めて便利である。Note that this reinforcing metal fitting does not have a protrusion on the outer periphery, so it is extremely convenient for transportation, storage, etc.
（６）実施例
以下本発明の実施例を添付図面により説明する。第１図
は本発明の補強金具の第１実施例を示すもので、該金具
（１）は金属棒を曲折して形成した長方形の枠体（２）
と、内側の金属棒型８角状体（３ａ）と外側の金属線型
の８角状体（３ｂ）とからなり、該内側及び外側の８角
状体（３ａ）、（３ｂ）がそれぞれ前記長方形の枠体（
２）に溶接その他の手段で互いに結着されている。(6) Examples Examples of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows a first embodiment of the reinforcing metal fitting of the present invention, and the metal fitting (1) has a rectangular frame (2) formed by bending a metal rod.
and an inner metal rod-shaped octagonal body (3a) and an outer metal wire-shaped octagonal body (3b), and the inner and outer octagonal bodies (3a) and (3b) are respectively Rectangular frame (
2) are attached to each other by welding or other means.
次に、上記第１実施例の補強金具についての施工を説明
する。第２図において、主筋（４）、（４）及びあばら
筋（５）、（５）による骨組状態の梁において、貫通孔
を設ける所定の個所にスリーブ（６）を配置すると共に
、該スリーブ（６）の両端部に補強金具（１）をおばら
筋（５）に針金等により取付ける。そしてその取付に際
しては、例えば前記８角状体（３ａ）の下辺にスリーブ
（６）を支承するためにＴ形の当片（７）を取付け、そ
して該スリーブ（６）を当片（７）に載置して弾性材（
８）によりスリーブ（６）を挟持して補強金具（１）に
固定することが好ましい、その後型枠（９）を取付けて
から該型枠（９）内にコンクリート（１０）を打設する
。かくてコンクリ−）（１０）の養生によれば、補強金
具（１）とコンクリート（１０）とが強固に結着して、
スリーブ（６）の周縁部の曲げによる斜方向等のひび割
れ、せん断による垂直方向等のひび割れに対して十分補
強することができる。Next, construction of the reinforcing metal fittings of the first embodiment will be explained. In FIG. 2, a sleeve (6) is placed at a predetermined location where a through hole is to be provided in a beam in a frame state made up of main reinforcements (4), (4) and stirrups (5), (5). 6) Attach the reinforcing metal fittings (1) to the stirrup muscles (5) at both ends with wire or the like. When installing it, for example, a T-shaped contact piece (7) is attached to the lower side of the octagonal body (3a) to support the sleeve (6), and the sleeve (6) is attached to the contact piece (7). Place it on the elastic material (
It is preferable to clamp the sleeve (6) and fix it to the reinforcing metal fittings (1) using 8). After that, a formwork (9) is attached, and then concrete (10) is poured into the formwork (9). Thus, according to the curing of the concrete (10), the reinforcing metal fittings (1) and the concrete (10) are firmly bonded,
It can be sufficiently reinforced against cracks in the diagonal direction due to bending of the peripheral edge of the sleeve (6) and cracks in the vertical direction due to shearing.
尚、前記補強金具（１）の製作にあたっては、金属製の
棒を所定の間隔毎に所定の角度折り曲げて８角形状に形
成し、その両端部（Ａ）（Ｂ）を第３図の拡大図の如く
長方形の枠体（２）の短辺部又は長辺部に溶接すること
により、内外の８角状体（３ａ） （３ｂ）が得られ
、かくて予め前記両端部（Ａ）（Ｂ）間を溶接して８角
状体を製作しておく必要がなく製作が容易となる。尚、
この製作においても８角状体（３ａ） （３ｂ）と長
方形の枠体（２）との残る当接個所も溶接により互いに
連結する。In manufacturing the reinforcing metal fitting (1), a metal rod is bent at a predetermined angle at predetermined intervals to form an octagonal shape, and both ends (A) and (B) are shown in the enlarged view of Fig. 3. As shown in the figure, inner and outer octagonal bodies (3a) (3b) are obtained by welding to the short side or long side of the rectangular frame (2), and thus both ends (A) ( B) There is no need to fabricate an octagonal body by welding the gaps, making fabrication easier. still,
In this manufacturing as well, the remaining contact points between the octagonal body (3a) (3b) and the rectangular frame body (2) are also connected to each other by welding.
第４図は本発明の第２実施例であり、長方形の金属棒製
枠体（２）に内側環状体（３ａ）と外側環状体（３ｂ）
を溶接その他の手段により連結して補強金具（１）を形
成しており、この場合は枠体（２）に対し環状体（３ａ
）（３ｂ）がリング状をなしているため、製作が簡易で
運搬にも便利である。FIG. 4 shows a second embodiment of the present invention, in which an inner annular body (3a) and an outer annular body (3b) are mounted on a rectangular metal rod frame (2).
are connected by welding or other means to form a reinforcing metal fitting (1). In this case, the annular body (3a) is connected to the frame (2).
) (3b) is ring-shaped, making it easy to manufacture and convenient to transport.
又第５図及び第６図は、第３．第４実施例であり、それ
ぞれ前記第１図及び第４図に示した補強金具に更に外方
に方形枠体及び環状体を重複せしめて構成したもので、
施工後においてコンクリートと補強金具との結着を更に
強固にすることができる。Also, FIGS. This is the fourth embodiment, and is constructed by overlapping the reinforcing metal fittings shown in FIGS. 1 and 4, respectively, with a rectangular frame body and an annular body outwardly,
After construction, the bond between the concrete and the reinforcing metal fittings can be further strengthened.
又第７図は第１の実施例を簡単にした第５実施例で、８
角状体（３）を１つにしたもので、簡易なスリーブ（６
）を取付けるような有孔梁に使用する場合に極めて便利
である。更に第８図は第６実施例で枠体（２）に対し環
状体（３）を渦巻状にしたもので、環状体が１本の渦巻
線により構成されているので製作が容易である。Also, FIG. 7 shows a fifth embodiment which is a simplified version of the first embodiment.
A simple sleeve (6) made up of one square body (3).
) is extremely convenient when used on perforated beams such as those to which a beam is attached. Furthermore, FIG. 8 shows a sixth embodiment in which the annular body (3) is spirally shaped with respect to the frame (2), and since the annular body is composed of one spiral line, it is easy to manufacture.
（７）発明の効果
上記の如く、本発明の補強金具によると、方形の金属製
枠体に金属製の多角状体又は環状体とを互いに連結して
いるので、当該補強金具を埋設した鉄筋コンクリート梁
にせん断力を作用させて引張力が作用しても方形状の枠
体と多角状体又は環状体とが相乗し、十分な耐力を有し
てひび割れを有効に防止し、更に該補強金具は平面的形
状であるので、型枠取付後においても梁せん断補強筋の
あばら筋に取付が容易にして施工が簡単であると共に、
型枠内に上方からコンクリートを打設しても、その重量
によって変形することがなく、しかも突出部が無いので
取付作業が容易であり、且つ運搬及び保管が極めて簡単
で、廉価に得られる効果を有する。(7) Effects of the Invention As described above, according to the reinforcing fitting of the present invention, since the rectangular metal frame body and the metal polygonal body or annular body are connected to each other, the reinforcing fitting is embedded in the reinforced concrete. Even when tensile force is applied to the beam by applying shear force, the rectangular frame and the polygonal or annular body work together to have sufficient strength and effectively prevent cracking, and the reinforcing metal fittings Since it has a planar shape, it can be easily attached to the stirrups of the beam shear reinforcement even after the formwork has been installed, and the construction is simple.
Even if concrete is poured into the formwork from above, it will not be deformed by its weight, and since there are no protruding parts, installation work is easy, and transportation and storage are extremely easy, which can be achieved at low cost. has.
第１図は本発明補強金具の第１実施例の正面図、第２図
は該金具により施工した鉄筋コンクリート有孔梁の縦断
面図、第３図は第１図の枠体と多角状体との結着方法を
示す拡大部分図。
第４図は本発明補強金具の第２実施例の正面図、第５図
、第６図、第７図、第８図はそれぞれ第３、第４．第５
、第６実施例の正面図、第９図は従来の補強金具の正面
図である。
（１）・・・補強金具
（２）、（２ａ）・・・枠体
（３） 、 （３ａ） 、 （３ｂ） 、 （３ｃ）
−・・多角状体又は環状体特許出願人 ティエム技研
株式会社
第１図 第４図
第５図 第６図
第２図 第３図Fig. 1 is a front view of the first embodiment of the reinforcing metal fitting of the present invention, Fig. 2 is a longitudinal cross-sectional view of a reinforced concrete perforated beam constructed using the metal fitting, and Fig. 3 shows the frame and polygonal body of Fig. 1. FIG. FIG. 4 is a front view of the second embodiment of the reinforcing metal fitting of the present invention, and FIGS. Fifth
, a front view of the sixth embodiment, and FIG. 9 is a front view of a conventional reinforcing metal fitting. (1)...Reinforcement fittings (2), (2a)...Frame (3), (3a), (3b), (3c)
- Polygonal body or annular body patent applicant Thiem Giken Co., Ltd. Figure 1 Figure 4 Figure 5 Figure 6 Figure 2 Figure 3
Claims (1)
、金属製多角状体又は環状体とを互いに連結したことを
特徴とする鉄筋コンクリート有孔梁の補強金具。A reinforcing metal fitting for a reinforced concrete perforated beam, characterized in that metal polygonal bodies or annular bodies are connected to the long and short sides of at least one rectangular metal frame body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2874988A JPH01207551A (en) | 1988-02-12 | 1988-02-12 | Reinforcing metal piece for porous beam in ferroconcrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2874988A JPH01207551A (en) | 1988-02-12 | 1988-02-12 | Reinforcing metal piece for porous beam in ferroconcrete |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01207551A true JPH01207551A (en) | 1989-08-21 |
Family
ID=12257057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2874988A Pending JPH01207551A (en) | 1988-02-12 | 1988-02-12 | Reinforcing metal piece for porous beam in ferroconcrete |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01207551A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0213643A (en) * | 1988-06-30 | 1990-01-18 | Nippon Steel Metal Prod Co Ltd | Beam part penetration hole periphery reinforcing member for steel reinforcement or steel frame concrete structure |
| JP2015190103A (en) * | 2014-03-27 | 2015-11-02 | 大和ハウス工業株式会社 | Opening reinforcement structure for rc beam |
| JP2020159068A (en) * | 2019-03-27 | 2020-10-01 | 株式会社奥村組 | Reinforced concrete beam structure |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63297657A (en) * | 1987-05-29 | 1988-12-05 | 三井建設株式会社 | Through-hole reinforcing structure |
| JPH01165854A (en) * | 1987-12-22 | 1989-06-29 | Kajima Corp | Reinforcing structure of porous beam or porous wall |
-
1988
- 1988-02-12 JP JP2874988A patent/JPH01207551A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63297657A (en) * | 1987-05-29 | 1988-12-05 | 三井建設株式会社 | Through-hole reinforcing structure |
| JPH01165854A (en) * | 1987-12-22 | 1989-06-29 | Kajima Corp | Reinforcing structure of porous beam or porous wall |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0213643A (en) * | 1988-06-30 | 1990-01-18 | Nippon Steel Metal Prod Co Ltd | Beam part penetration hole periphery reinforcing member for steel reinforcement or steel frame concrete structure |
| JP2015190103A (en) * | 2014-03-27 | 2015-11-02 | 大和ハウス工業株式会社 | Opening reinforcement structure for rc beam |
| JP2020159068A (en) * | 2019-03-27 | 2020-10-01 | 株式会社奥村組 | Reinforced concrete beam structure |
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