JP2713121B2 - Reinforced concrete column top anchoring method - Google Patents

Reinforced concrete column top anchoring method

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Publication number
JP2713121B2
JP2713121B2 JP27955093A JP27955093A JP2713121B2 JP 2713121 B2 JP2713121 B2 JP 2713121B2 JP 27955093 A JP27955093 A JP 27955093A JP 27955093 A JP27955093 A JP 27955093A JP 2713121 B2 JP2713121 B2 JP 2713121B2
Authority
JP
Japan
Prior art keywords
column
floor
bar
bars
panel zone
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
Application number
JP27955093A
Other languages
Japanese (ja)
Other versions
JPH07127137A (en
Inventor
耕喜 前田
Original Assignee
鹿島建設株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 鹿島建設株式会社 filed Critical 鹿島建設株式会社
Priority to JP27955093A priority Critical patent/JP2713121B2/en
Publication of JPH07127137A publication Critical patent/JPH07127137A/en
Application granted granted Critical
Publication of JP2713121B2 publication Critical patent/JP2713121B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【産業上の利用分野】本発明は、鉄筋コンクリート造の
最上階柱頭部の柱筋定着工法に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for anchoring a column head of a reinforced concrete column.

【0002】[0002]

【従来の技術】従来、柱筋を最上階まで延長するに際し
ては下階から延びている柱筋の上端に先端をフック状に
湾曲加工した柱筋を1本1本溶接または圧接している。
この方法によると最上階大梁の梁成が大きい場合は柱頭
部の柱筋は最上階パネルゾーン内へ定着され特に問題は
ないが、梁成が小さい場合やフラットスラブ構造の場合
は柱筋の定着長が不足しパネルゾーン内への定着が困難
となる。
2. Description of the Related Art Conventionally, when extending a column bar to the top floor, one column bar whose tip is bent into a hook shape is welded or pressed to the upper end of the column bar extending from the lower floor.
According to this method, when the beam of the top floor girder is large, the column reinforcement of the column cap is fixed in the top floor panel zone, and there is no problem. However, when the beam is small or the flat slab structure is used, the column reinforcement is fixed. Insufficient length makes fixing in the panel zone difficult.

【0003】この定着長の不足を補うため、柱筋の数を
増したり、ステイプル状に屈曲加工した鉄筋を柱頭より
X方向Y方向の二段に挿入して重ね継手により柱筋上端
に接合したりする対策が採られている。
In order to compensate for the shortage of the fixing length, the number of column bars is increased, or a reinforcing bar bent in a staple shape is inserted in two stages in the X and Y directions from the column cap and joined to the upper end of the column bar by a lap joint. Measures have been taken.

【0004】[0004]

【発明が解決しようとする課題】最上階パネルゾーンに
は、これらの柱筋に加えてX方向Y方向の梁筋も配筋さ
れるので最上階パネルゾーン内は鉄筋で混雑し、コンク
リートの充填を阻害することとなり、鉄筋コンクリート
の品質を劣化させる結果となる。
In the top floor panel zone, in addition to these pillars, beam reinforcements in the X and Y directions are also arranged, so that the inside of the top floor panel zone is crowded with reinforcing bars and filled with concrete. And the quality of the reinforced concrete is degraded.

【0005】即ち、柱筋の定着長の不足を補おうとする
と、パネルゾーン部のコンクリートの充填不足を招くこ
となる。
[0005] In other words, if an attempt is made to compensate for the shortage of the anchoring length of the column bar, insufficient filling of the concrete in the panel zone portion will be caused.

【0006】本発明は、最上階柱頭部の柱筋の配筋を単
純化して最上階パネルゾーン内の鉄筋の混雑を緩和し
て、柱筋の十分な定着長を確保するとともにパネルゾー
ン部のコンクリートの充填不足を解消することを目的と
する。
SUMMARY OF THE INVENTION The present invention simplifies the arrangement of pillars on the top of a column, reduces the congestion of the reinforcing bars in the panel zone on the top floor, secures a sufficient anchoring length of the column, and secures the panel zone. The purpose is to eliminate insufficient filling of concrete.

【0007】[0007]

【課題を解決するための手段】本発明は、下階から延び
ている柱筋の上端に溶接することにより柱筋を最上階ま
で延長するに際し、最上階柱筋としてヘアピン型に屈曲
加工した鉄筋を使用し、その2本の脚の両下端を柱水平
断面の対角線方向もしくはそれに平行する方向に位置す
る既配筋の2本の柱筋に突き合わせ溶接し、最上階柱筋
の上部水平部分を最上階パネルゾーン内に納めることを
特徴とする鉄筋コンクリート造の最上階柱頭部の柱筋定
着工法である。そして、この工法を施工する際に、柱水
平断面の対角線方向もしくはそれに平行する方向に位置
する適当な既配筋の2本の柱筋が存在しない柱筋(隅の
1本だけの柱筋)に対しては従来どうり、先端をフック
状に湾曲させた最上階柱筋を突き合わせ溶接し、そのフ
ック部を最上階パネルゾーン内に納めるようにした最上
階柱頭部の柱筋定着工法である。
SUMMARY OF THE INVENTION The present invention relates to a steel bar which is bent into a hairpin shape as a top floor column bar when the column bar is extended to the top floor by welding to an upper end of a column bar extending from a lower floor. Butt-welding the lower ends of the two legs to two diagonal bars of the existing bar located in the diagonal direction of the column horizontal section or in a direction parallel to it, welding the upper horizontal part of the top floor column bar This is a method of anchoring the top of the reinforced concrete column head, which is housed in the top floor panel zone. When this method is applied, there are no existing two existing column bars located in the diagonal direction of the column horizontal section or in the direction parallel thereto (only one column bar in the corner). In contrast to the conventional method, a top bar pillar anchoring method is used in which the top bar with the tip curved in a hook shape is butt-welded, and the hook is placed in the top floor panel zone. .

【0008】本発明の第1の要点は、従来の定着長の不
足を補うためのステイプル状に屈曲加工した鉄筋の使用
をやめ、これに代えて、 かに脚の長いヘアピン型に屈
曲加工した鉄筋を最上階柱筋として使用した点であり、
第2の要点は、この最上階柱筋のそれぞれの脚の下端
を、下階より既に配筋されている柱筋の中の柱水平断面
の対角線方向もしくはそれに平行する方向に位置する2
本に突合せ溶接する点である。
A first point of the present invention is that the use of the conventional staple-bent reinforcing bar for compensating for the shortage of the fixing length is stopped, and instead, the bar is bent into a hairpin type having long crab legs. It is the point that the reinforcing bar was used as the top floor column bar,
The second point is that the lower end of each leg of the top floor column is positioned in the diagonal direction of the column horizontal cross section in the column already arranged from the lower floor or in the direction parallel thereto.
This is the point of butt welding to a book.

【0009】第1の要点の結果として、最上階柱筋のヘ
アピン型の水平部分により柱筋の十分な定着長を確保す
ることが可能となり、従来法の定着長の不足を補うため
のステイプル状鉄筋の使用が不必要となり、施工性が向
上するとともに重ね継手による鉄筋の混雑が緩和され
る。第2の要点の結果として、最上階柱筋を対角線方向
に配筋すれば十分であるので、従来法のようにステイプ
ル状鉄筋をX方向Y方向の二段に配筋する必要はなく、
施工性が向上するとともに鉄筋の混雑が緩和される。さ
らに、接合法として突合せ溶接を採用したので接合部で
の鉄筋の変形や寸法変化は殆どなく、配筋精度は容易に
確保される。そして、接合部はパネルゾーン部より か
に下であるので、接合操作の施工性も向上する。
As a result of the first point, it is possible to secure a sufficient anchoring length of the column bar by the hairpin-shaped horizontal portion of the top floor column bar, and to form a staple shape for compensating the shortage of the anchoring length in the conventional method. The use of reinforcing bars becomes unnecessary, workability is improved, and congestion of reinforcing bars due to lap joints is reduced. As a result of the second essential point, it is sufficient to arrange the top floor column bars in a diagonal direction, so there is no need to arrange staple-shaped reinforcing bars in two steps in the X and Y directions as in the conventional method.
Workability is improved and congestion of reinforcing bars is reduced. Furthermore, since butt welding is employed as the joining method, there is almost no deformation or dimensional change of the reinforcing bar at the joining portion, and the arrangement accuracy of the reinforcing bars is easily secured. And, since the joint portion is located below the panel zone portion, the workability of the joining operation is also improved.

【0010】[0010]

【実施例】以下図面を参照しながら本発明を説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings.

【0011】図1は本発明工法の配筋の一例を示し、
(a)は平面図、(b)は立面図である。
FIG. 1 shows an example of a bar arrangement according to the method of the present invention.
(A) is a plan view, (b) is an elevation view.

【0012】この例では16本の柱筋1が水平断面正方
形状にX方向に10本、Y方向に10本(隅の4本は両
方向に共通)配置され、下階から上方に延びている。こ
の柱筋1の対角に位置する2本の柱筋1の上端にヘアピ
ン型最上階柱筋1Aのそれぞれの脚の下端が突合せ溶接
される。ヘアピン型最上階柱筋1Aの上部水平部は上側
梁主筋の下に接する状態でパネルゾーン内に納められ
る。同様に対角線に平行する方向に位置する1対の柱筋
1の上端にヘアピン型最上階柱筋1B、1C、1Dが突
合せ溶接され、上部水平部は上側梁主筋の下に接する状
態でパネルゾーン内に納められる。このようにして、7
本のヘアピン型最上階柱筋が下階からの14本の柱筋1
に突合せ溶接され、最後に2隅に各1本の未接合の柱筋
1が残ることになる。この各1本計2本の柱筋1にはヘ
アピン型最上階柱筋で接合する相手がないので、それぞ
れに通常の先端がフック状に湾曲した最上階柱筋1Eを
突き合わせ溶接し、そのフック部を上側梁主筋の下に接
する状態でパネルゾーン内に納める。(図1(b)では
最上階柱筋総てを図示すべきであるが、総てを図示する
と図が入り組み却って理解を妨げると思われるので対角
の2本の柱筋1を接合するへアピン型最上階柱筋1Aを
図示するに留め、他のへアピン型最上階柱筋1B、1
C、1Dおよび先端フック状最上階柱筋1Eの図示は省
略した。)図1から明らかなように、本発明において
は、最も幅の広いヘアピン型最上階柱筋1Aから最も幅
の狭いヘアピン型最上階柱筋1Dまでと、先端フック状
最上階柱筋1Eとの数種類の最上階柱筋を準備すること
が必要である。
In this example, sixteen column bars 1 are arranged in a horizontal cross section in a square shape, ten in the X direction and ten in the Y direction (four corners are common to both directions), and extend upward from the lower floor. . The lower ends of the legs of the hairpin type top floor columnar bar 1A are butt-welded to the upper ends of two columnar bars 1 located diagonally to this columnar bar 1. The upper horizontal portion of the hairpin type top floor column bar 1A is placed in the panel zone in contact with the lower part of the upper beam main bar. Similarly, a hairpin type top floor column bar 1B, 1C, 1D is butt-welded to the upper ends of a pair of column bars 1 located in a direction parallel to the diagonal line, and the upper horizontal portion is in a panel zone in a state of contacting below the upper beam main bar. Put in In this way, 7
Hairpin type top floor pillars are 14 pillars 1 from the lower floor
At the end, and one unjoined column bar 1 is left at each of the two corners. Since each of these two column bars 1 does not have a mating member joined by a hairpin type top column column bar, the top column column bar 1E whose normal tip is curved like a hook is butt-welded to each, and the hook is formed. Place the part in the panel zone in contact with the lower part of the upper beam reinforcement. (In FIG. 1 (b), all the top-floor column bars should be shown, but if all are shown, the diagram would be complicated and it would be difficult to understand, so the two diagonal column bars 1 are joined. Only the hairpin-type top floor column bars 1A are illustrated, and other hairpin-type top floor column bars 1B, 1B,
Illustration of C, 1D and the top hook columnar bar 1E at the tip end is omitted. As is apparent from FIG. 1, in the present invention, the widest hairpin type uppermost column bar 1A to the narrowest hairpin type uppermost column bar 1D and the hook-shaped uppermost column bar 1E are connected. It is necessary to prepare several types of top floor columns.

【0013】この例ではX方向、Y方向に同数の柱筋1
が配筋されていて、最後に2隅に各1本の未接合の柱筋
1が残る場合を示したが、X方向、Y方向の柱筋1の数
が異なり、最後に2隅に各2本の未接合の柱筋1が残る
場合には、その2本にそれぞれ先端がフック状に湾曲し
た最上階柱筋を溶接するのではなく、その2本を本発明
のヘアピン型最上階柱筋で接合するのが好ましい。
In this example, the same number of column bars 1 are provided in the X and Y directions.
Are shown, and one unjoined pillar 1 is left at each of the two corners at the end. However, the number of pillars 1 in the X direction and the Y direction is different. When two unjoined pillar bars 1 remain, the two pillars are not welded to the top pillar pillars whose tips are curved in a hook shape, but the two are joined to the hairpin type top pillar of the present invention. It is preferred to join with muscles.

【0014】また、柱の断面形状が長方形ではなく、例
えば円形の場合には明確な対角線は描けないが、その場
合には直交する梁の方向の中間を対角線方向とする。
When the cross section of the column is not rectangular but is circular, for example, a clear diagonal line cannot be drawn, but in that case, the middle of the directions of the orthogonal beams is defined as the diagonal direction.

【0015】[0015]

【発明の効果】本発明では、脚の長いヘアピン型に屈曲
加工した鉄筋を最上階柱筋として使用し、この最上階柱
筋で柱筋を2本1組として対角線方向に接合してしてい
るのでパネルゾーン内の鉄筋の混雑は緩和され、最上階
柱筋の十分な定着長が確保されるとともにパネルゾーン
部のコンクリートの充填不足が解消される。
According to the present invention, a reinforcing bar bent into a long hairpin type is used as the top floor column bar, and a pair of column bars is joined diagonally in the top floor column bar. As a result, congestion of reinforcing bars in the panel zone is alleviated, a sufficient anchoring length of the top floor column bars is secured, and insufficient filling of concrete in the panel zone is eliminated.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明工法の配筋の一例を示し、(a)は平面
図、(b)は立面図である。
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows an example of a reinforcement arrangement according to the present invention, wherein (a) is a plan view and (b) is an elevation view.

【符号の説明】 1・・下階柱筋、1A・・最も幅の広いヘアピン型最上
階柱筋、1B、1C・・中間幅のヘアピン型最上階柱
筋、1D・・最も幅の狭いヘアピン型最上階柱筋、1E
・・先端フック状最上階柱筋、2X・・X方向梁主筋、
2Y・・Y方向梁主筋、3・・フープ筋、4・・突き合
わせ溶接部。
[Description of Signs] 1 ・ ・ Lower pillar column, 1A ・ ・ The widest hairpin type top column bar, 1B, 1C ・ ・ Intermediate width hairpin type upper column column, 1D ・ ・ Narrowest hairpin Type top floor column, 1E
..Hook-shaped top floor column bars, 2X..X direction beam main bars,
2Y ··· Y direction beam main reinforcement, 3 ·· hoop reinforcement, 4 ··· butt weld.

Claims (2)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】 下階から延びている柱筋の上端に溶接す
ることにより柱筋を最上階まで延長するに際し、最上階
柱筋としてヘアピン型に屈曲加工した鉄筋を使用し、そ
の2本の脚の両下端を柱水平断面の対角線方向もしくは
それに平行する方向に位置する既配筋の2本の柱筋に突
き合わせ溶接し、最上階柱筋の上部水平部分を最上階パ
ネルゾーン内に納めることを特徴とする鉄筋コンクリー
ト造の最上階柱頭部の柱筋定着工法。
When the pillar is extended to the uppermost floor by welding to the upper end of the pillar extending from the lower floor, a hairpin-shaped reinforcing steel bar is used as the uppermost pillar. The lower ends of the legs are butt-welded to the two existing reinforcing bars located in the diagonal direction of the column horizontal section or in the direction parallel thereto, and the upper horizontal part of the uppermost column is placed in the uppermost panel zone. The method of anchoring the top of the reinforced concrete column head, characterized by the following features:
【請求項2】 柱水平断面の対角線方向もしくはそれに
平行する方向に位置する適当な既配筋の2本の柱筋が存
在しない柱筋については先端をフック状に湾曲させた最
上階柱筋を突き合わせ溶接し、そのフック部を最上階パ
ネルゾーン内に納めることを特徴とする請求項1記載の
鉄筋コンクリート造の最上階柱頭部の柱筋定着工法。
2. Regarding a column bar that does not have two column bars of appropriate pre-arranged bars located in the diagonal direction of the column horizontal cross section or in a direction parallel thereto, the top floor column bar whose tip is curved in a hook shape is used. 2. The method according to claim 1, wherein the butt-welding is carried out, and the hook portion is accommodated in the top floor panel zone.
JP27955093A 1993-11-09 1993-11-09 Reinforced concrete column top anchoring method Expired - Lifetime JP2713121B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP27955093A JP2713121B2 (en) 1993-11-09 1993-11-09 Reinforced concrete column top anchoring method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP27955093A JP2713121B2 (en) 1993-11-09 1993-11-09 Reinforced concrete column top anchoring method

Publications (2)

Publication Number Publication Date
JPH07127137A JPH07127137A (en) 1995-05-16
JP2713121B2 true JP2713121B2 (en) 1998-02-16

Family

ID=17612538

Family Applications (1)

Application Number Title Priority Date Filing Date
JP27955093A Expired - Lifetime JP2713121B2 (en) 1993-11-09 1993-11-09 Reinforced concrete column top anchoring method

Country Status (1)

Country Link
JP (1) JP2713121B2 (en)

Also Published As

Publication number Publication date
JPH07127137A (en) 1995-05-16

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