JPH116198A - Crack preventive structure of joint-bar reinforcing type steel-encased reinforced concrete-constructed column-beam joining section - Google Patents
Crack preventive structure of joint-bar reinforcing type steel-encased reinforced concrete-constructed column-beam joining sectionInfo
- Publication number
- JPH116198A JPH116198A JP15994497A JP15994497A JPH116198A JP H116198 A JPH116198 A JP H116198A JP 15994497 A JP15994497 A JP 15994497A JP 15994497 A JP15994497 A JP 15994497A JP H116198 A JPH116198 A JP H116198A
- Authority
- JP
- Japan
- Prior art keywords
- column
- shaped
- crack
- bars
- 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
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- Joining Of Building Structures In Genera (AREA)
- Reinforcement Elements For Buildings (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は鉄骨鉄筋コンクリー
ト建造物（鉄骨鉄筋コンクリート柱・鉄骨梁構造、鉄筋
コンクリート柱・鉄骨梁構造を含む）の建設における柱
・梁接合部のひび割れ防止構造に係るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for preventing cracks in a joint between a column and a beam in the construction of a steel reinforced concrete building (including a steel reinforced concrete column and a steel beam structure, a reinforced concrete column and a steel beam structure).
【０００２】[0002]
【従来の技術】従来の鉄骨鉄筋コンクリート柱ａ、及び
鉄骨梁ｂ接合部パネルの補強は、現場においてＬ型フー
プ筋Ｃを梁鉄骨ウェブの貫通孔ｄに通し、フレアー溶接
を行ない、閉鎖型としている。これに対して本発明者等
は施工の簡易化、省力化、及び耐震性の向上を図る目的
で、割りフープ筋を使用する代わりに柱筋を拘束するＵ
字形差し筋ｅをユニット化して用いる簡易な工法を特願
平８−３１１９９２号において提案した。（図７及び図
８参照）2. Description of the Related Art A conventional steel frame reinforced concrete column a and a steel beam b joint panel are reinforced by passing an L-shaped hoop bar C through a through-hole d of a beam steel web at the site and performing flare welding to make a closed type. . On the other hand, the present inventors, in order to simplify the construction, save labor, and improve the earthquake resistance, use a U-shaped bar that restrains the column bar instead of using the split hoop bar.
A simple construction method using a unitary shape of the character-shaped insertion bar e was proposed in Japanese Patent Application No. 8-311992. (See FIGS. 7 and 8)
【０００３】[0003]
【発明が解決しようとする課題】前記工法を採用した場
合、梁鉄骨のフープ筋貫通孔が不要となるので、梁鉄骨
の断面欠損がなくなり、耐震性の向上が図られ、又鉄筋
の現場溶接が省略され施工性が向上するという利点が生
じるが、柱・梁接合部内のコンクリートの一部に無筋と
なる部分が生じ、コンクリートの乾燥収縮や微小な地震
等の影響によってひび割れが誘発され易い。これらのひ
び割れが生じる部分は、中規模以上の地震時など、フレ
ームに変形を生じた場合に、コンクリートが剥落する惧
れがある。When the above-mentioned construction method is employed, the through-hole of the hoop of the beam steel is not required, so that the cross-section of the beam steel is not lost, the seismic resistance is improved, and the steel bar is welded on site. Is omitted and the workability is improved.However, there is a part of the concrete in the column / beam joint that becomes unsmooth, and cracks are likely to be induced by the effects of drying shrinkage of the concrete and small earthquakes. . These cracks may cause concrete to fall off when the frame is deformed, such as during an earthquake of medium or larger scale.
【０００４】本発明は前記従来技術の有する問題点に鑑
みて提案されたもので、その目的とするところは柱・梁
接合パネル無筋部分のコンクリートのひび割れ、及び剥
落を防止する点にある。The present invention has been proposed in view of the above-mentioned problems of the prior art, and has as its object to prevent cracking and peeling of concrete in a straight portion of a column / beam joint panel.
【０００５】[0005]
【課題を解決するための手段】前記の目的を達成するた
め、本発明に係る差し筋補強形式鉄骨鉄筋コンクリート
造柱・梁接合部のひび割れ防止構造は、鉄骨鉄筋コンク
リート造柱・梁接合部パネルにおける無筋部分に、Ｌ字
形、またはコ字形のひび割れ防止筋を配筋して構成され
ている。SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to a reinforcing structure of a reinforcing steel reinforced concrete column / beam joint with a reinforcing rod, which is provided with a structure for preventing cracks in a steel / reinforced concrete column / beam joint panel. An L-shaped or U-shaped crack-preventing rebar is arranged in the rebar portion.
【０００６】請求項２の発明によれば前記ひび割れ防止
筋は、複数のＬ字形又はコ字状補強筋を複数の縦筋間に
亘って列設し、同各縦筋に前記各補助筋先端を溶着して
ユニット化して構成されている。According to the second aspect of the present invention, the plurality of L-shaped or U-shaped reinforcing bars are arranged in a row across the plurality of vertical bars, and the tip of each of the auxiliary bars is provided on each vertical bar. Are welded to form a unit.
【０００７】[0007]
【発明の実施の形態】以下本発明を本発明の好ましい実
施の形態を示す図面について説明する。図１乃至図５に
おいて１は断面十字型の鉄骨柱、２は鉄骨梁で鉄骨柱１
の建方を行ない、同柱１に鉄骨梁２を取り付けてフレー
ムを組立てる。（図１参照） 次いで柱主筋３の配筋を行ったのち柱主筋３を囲繞する
フープ筋４の配筋を行なう。（図２参照）次いで柱・梁
接合部パネルに主筋を拘束するように、ユニット化され
たＵ字型差し筋５を配筋して柱主筋と結束する。（図３
参照） 次いでユニット化されたひび割れ補強筋６を前記差し筋
５に沿わせて差し込み結束する。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings showing preferred embodiments of the present invention. 1 to 5, reference numeral 1 denotes a cross-shaped steel column, 2 denotes a steel beam and a steel column 1
Then, a steel beam 2 is attached to the same column 1 to assemble a frame. (Refer to FIG. 1) Next, after the main bar 3 is arranged, the hoop 4 surrounding the main bar 3 is arranged. (Refer to FIG. 2) Next, unitized U-shaped cross bars 5 are arranged and bound to the column main bars so as to restrict the main bars to the column / beam joint panel. (FIG. 3
Next, the unitized crack reinforcing reinforcing bar 6 is inserted and bound along the above-mentioned reinforcing bar 5.
【０００８】前記補強筋６は一双の垂直筋６ａに沿って
Ｌ型筋６ｂ又はコ字型筋を列設し、同Ｌ型又はコ字型ひ
び割れ補強筋の両端をスポット溶接して構成されてい
る。このように構成されたユニット化されたひび割れ補
強筋６をＵ字型差し筋５に沿って差し込み結束する。
（図４参照） 次いで柱の型枠を組立て、コンクリートを打設する。柱
とスラブＳとは一体打ちとする。（図５参照） なお柱鉄骨は図示の実施例の如き十字状断面の他に、Ｔ
字状断面等の種々の断面形状のものが採用される。ま
た、柱鉄骨の４方向全てには、梁が取り付かない場合も
ある。これらについては、それぞれ実状に合わせて、コ
字型補強筋も使用する。（図６参照） なお柱における梁の取付く面は地震時の梁の変形に伴う
コンクリートの剥落を生じるために、主として梁の上下
フランジ近傍を補強し、梁の取付かない面はパネル内に
均等に配筋する。The reinforcing bars 6 are formed by arranging L-shaped bars 6b or U-shaped bars along one pair of vertical bars 6a, and spot-welding both ends of the L-shaped or U-shaped cracked reinforcing bars. I have. The unitized crack reinforcing bar 6 configured as described above is inserted and bound along the U-shaped bar 5.
(See FIG. 4) Next, the formwork of the pillar is assembled, and concrete is poured. The pillar and the slab S are integrally punched. (See FIG. 5) In addition to the cross-shaped cross section as in the illustrated embodiment, the column steel
Various cross-sectional shapes such as a letter-shaped cross section are employed. In some cases, beams may not be attached to all four directions of the column steel frame. For these, U-shaped reinforcing bars are also used according to the actual conditions. (Refer to Fig. 6.) In order to prevent the concrete from coming off due to the deformation of the beam during the earthquake, the surface where the beam is attached to the pillar is mainly reinforced near the upper and lower flanges of the beam. Arrange the bars.
【０００９】[0009]
【発明の効果】このように本発明によれば鉄骨鉄筋コン
クリート造柱・梁接合部パネルにおける無筋部分に、Ｌ
字形またはコ字形のひび割れ防止筋を配筋したことによ
って、柱・梁接合部のコンクリートのひび割れを防止す
ることができる。請求項２の発明によれば、ひび割れ防
止筋を、複数のＬ形又はコ字状補助筋を複数の縦筋間に
亘って列設し、同各縦筋に前記補助筋先端を結束又は、
スポット溶接してユニット化したことによって、現場で
の施工性を向上しうるものである。As described above, according to the present invention, the straight portion of the steel-frame reinforced concrete column / beam joint panel has L
By arranging the U-shaped or U-shaped crack preventing reinforcement, it is possible to prevent the concrete at the column / beam joint from cracking. According to the invention of claim 2, a plurality of L-shaped or U-shaped auxiliary muscles are arranged in a row across the plurality of vertical muscles, and the tips of the auxiliary muscles are bound to the respective vertical muscles,
By unitizing by spot welding, workability at the site can be improved.
【図１】本発明に係る差し筋補強形式鉄骨鉄筋コンクリ
ート造柱・梁接合部のひび割れ防止構造の施工工程を示
し、（イ）（ロ）は柱鉄骨建方の平面図及び立面図であ
る。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows a construction process of a crack-preventing structure of a reinforcing steel type reinforced concrete column / beam joint part according to the present invention, wherein (a) and (b) are a plan view and an elevation view of a column steel frame construction. .
【図２】（イ）（ロ）は柱主筋、フープ筋の配筋工程を
示す平面図及び立面図である。FIGS. 2A and 2B are a plan view and an elevation view showing a process of arranging pillar main bars and hoop bars.
【図３】（イ）（ロ）は差し筋の柱主筋に対する配筋工
程を示す平面図及び立面図である。FIGS. 3 (a) and 3 (b) are a plan view and an elevation view showing a step of arranging a reinforcing bar with respect to a column main bar.
【図４】（イ）（ロ）はひび割れ補強筋の配筋工程を示
す平面図並びに立面図である。FIGS. 4A and 4B are a plan view and an elevation view showing a step of arranging a reinforcing bar for cracks.
【図５】（イ）（ロ）はコンクリート打設工程を示す平
面図及び立面図である。FIGS. 5A and 5B are a plan view and an elevation view showing a concrete placing process.
【図６】（イ）（ロ）（ハ）（ニ）（ホ）はひび割れ補
強筋構造の例を示したものである。FIGS. 6 (a), (b), (c), (d), and (e) show examples of a crack reinforcement structure.
【図７】（イ）（ロ）は従来構造の一例を示す平面図及
び立面図である。FIGS. 7A and 7B are a plan view and an elevation view showing an example of a conventional structure.
【図８】（イ）（ロ）は従来構造の他の例を示す平面図
及び立面図である。8A and 8B are a plan view and an elevation view showing another example of the conventional structure.
１ 柱鉄骨 ２ 鉄骨梁 ３ 柱主筋 ４ フープ筋 ５ Ｕ字形差し筋 ６ ひび割れ補強筋 ７ 水平スチフナ Ｓ スラブ DESCRIPTION OF SYMBOLS 1 Column steel 2 Steel beam 3 Column main bar 4 Hoop bar 5 U-shaped cross bar 6 Crack reinforcing bar 7 Horizontal stiffener S Slab
───────────────────────────────────────────────────── フロントページの続き (72)発明者 藤原 敏夫 東京都渋谷区千駄ヶ谷四丁目６番15号 株 式会社フジタ内 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Toshio Fujiwara Fujita Co., Ltd. 4-6-115 Sendagaya, Shibuya-ku, Tokyo
Claims (2)
ネルにおける無筋部分に、Ｌ字形、またはコ字形のひび
割れ防止筋を配筋していることを特徴とする差し筋補強
形式鉄骨鉄筋コンクリート造柱・梁接合部のひび割れ防
止構造。An L-shaped or U-shaped crack-preventing reinforcing bar is provided in a reinforcing portion of a steel-reinforced concrete column-beam joint panel to provide a reinforcing bar. Crack prevention structure at beam joint.
状補強筋を複数の縦筋間に亘って列設し、同各縦筋に前
記各補助筋先端を結束又はスポット溶接してユニット化
して構成された請求項１記載の差し筋補強形式鉄骨鉄筋
コンクリート造柱・梁接合部のひび割れ防止構造。2. A crack preventing bar is formed by arranging a plurality of L-shaped or U-shaped reinforcing bars in a row across a plurality of vertical bars, and binding or spot welding the tips of the auxiliary bars to the respective vertical bars. The structure for preventing cracks in a steel-reinforced concrete column / beam joint section according to claim 1, wherein the structure is formed as a reinforcement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15994497A JP3877018B2 (en) | 1997-06-17 | 1997-06-17 | Barring prevention structure of steel reinforced concrete column / beam joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15994497A JP3877018B2 (en) | 1997-06-17 | 1997-06-17 | Barring prevention structure of steel reinforced concrete column / beam joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH116198A true JPH116198A (en) | 1999-01-12 |
| JP3877018B2 JP3877018B2 (en) | 2007-02-07 |
Family
ID=15704576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15994497A Expired - Fee Related JP3877018B2 (en) | 1997-06-17 | 1997-06-17 | Barring prevention structure of steel reinforced concrete column / beam joint |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3877018B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101367495B1 (en) * | 2011-12-21 | 2014-02-25 | 경기대학교 산학협력단 | Reinforcing system in super columns to reduce the concrete hydration heat and enhance the seismic performance of columns |
| CN107476438A (en) * | 2017-09-12 | 2017-12-15 | 姚攀峰 | A kind of repair type super high rise structure and construction method |
-
1997
- 1997-06-17 JP JP15994497A patent/JP3877018B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101367495B1 (en) * | 2011-12-21 | 2014-02-25 | 경기대학교 산학협력단 | Reinforcing system in super columns to reduce the concrete hydration heat and enhance the seismic performance of columns |
| CN107476438A (en) * | 2017-09-12 | 2017-12-15 | 姚攀峰 | A kind of repair type super high rise structure and construction method |
| CN107476438B (en) * | 2017-09-12 | 2024-03-12 | 姚攀峰 | Repairable super high-rise structure and construction method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3877018B2 (en) | 2007-02-07 |
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