JPH1129979A - Anchored structure of beam main reinforcement at column-to-beam junction - Google Patents

Anchored structure of beam main reinforcement at column-to-beam junction

Info

Publication number
JPH1129979A
JPH1129979A JP9185194A JP18519497A JPH1129979A JP H1129979 A JPH1129979 A JP H1129979A JP 9185194 A JP9185194 A JP 9185194A JP 18519497 A JP18519497 A JP 18519497A JP H1129979 A JPH1129979 A JP H1129979A
Authority
JP
Japan
Prior art keywords
fixing
column
main
beam main
joint
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
Application number
JP9185194A
Other languages
Japanese (ja)
Inventor
Yasuhiko Masuda
安彦 増田
Noriyuki Furuya
則之 古屋
Yasushi Hamada
耕史 浜田
Mitsuo Koyanagi
光生 小柳
Kenji Yonezawa
健次 米沢
Yuzuru Kobayashi
譲 小林
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Obayashi Corp
Original Assignee
Obayashi Corp
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 Obayashi Corp filed Critical Obayashi Corp
Priority to JP9185194A priority Critical patent/JPH1129979A/en
Publication of JPH1129979A publication Critical patent/JPH1129979A/en
Granted legal-status Critical Current

Links

Abstract

PROBLEM TO BE SOLVED: To enable improving anchoring workability that was difficult to attain, while keeping the anchoring property of beam main reinforcement sufficiently high. SOLUTION: At the junction between the column 1 of a reinforced concrete structure and beams 2 arranged to cross the column 1 in cruciform, a plurality of beam main reinforcements 3 arranged inside column main reinforcements 4 in such a way as to cross one another in an X-Y shape and projecting from the ends of the beams 2 are anchored to the inside of the column via a joint. In this case, the joint comprises four strips of anchoring metal fittings 10, which are located in the inside surrounded by the column main reinforcements 4, and in which fitting grooves are formed that can be assembled into an well crib shape, and a plurality of holes through which the beam main reinforcements 3 are passed are formed in the anchoring metal fittings 10. The ends of the beam main reinforcements 3 which project from the beams 2 facing the anchoring metal fittings 10 are passed through the holes, and a plurality of anchoring nuts 16 that are screwed to the beam main reinforcement 3 are secured to both sides of each hole, and the anchoring metal fittings 10 are assembled into the well crib shape and secured to one another to anchor each beam main reinforcement 3 inside the column 1.

Description

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

【0001】[0001]

【発明の属する技術分野】この発明は、定着強度を高く
確保しつつ、定着作業性を改善できるようにした柱・梁
接合部における梁主筋の定着構造に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixing structure of a beam main reinforcing bar at a column / beam joint, which can improve fixing workability while securing a high fixing strength.

【0002】[0002]

【従来の技術】プレキャストコンクリート梁(以降、P
Ca梁と記す)を接合する場合には、柱・梁接合部で梁
主筋を継ぎ、接合部コンクリートを打設するのが最も効
率のよい方法である。
2. Description of the Related Art Precast concrete beams (hereinafter referred to as P
In the case of joining Ca beams), the most efficient method is to join the beam main reinforcement at the column / beam joint and cast concrete at the joint.

【0003】図6は、従来の柱・梁接合部における梁主
筋の接合構造を示すものであり、図示するように、柱1
を中心として十字型をなしてX−Y方向に配置された4
本のPCa梁2の端部からは複数本の梁主筋3が突出す
る。これらの梁主筋3は互いに対面する相手側の梁2の
柱主筋3に対向させており、この対向する梁主筋3,3
同士を柱1の内側に林立する柱主筋4の内部においてネ
ジグラウト式継手5によって連結定着させている。
FIG. 6 shows a joint structure of a beam main bar at a conventional column / beam joint. As shown in FIG.
4 arranged in the X-Y direction in a cross shape with
A plurality of beam main bars 3 protrude from the end of the PCa beam 2. These beam main reinforcements 3 are opposed to the column main reinforcements 3 of the beam 2 on the opposite side facing each other.
These are connected and fixed by a thread grout type joint 5 inside a pillar main bar 4 that stands inside the pillar 1.

【0004】また、このネジグラウト式継手5による連
結構造の他に、例えば特公平8−14134号公報に見
られるように、交差する鉄筋同士を溶接により固着する
構造も一般的に採られており、これら各構造方式によっ
て十分な定着強度を確保することで、梁主筋のコンクリ
ート中からの抜け出しを防止している。
In addition to the connection structure using the thread grout type joint 5, a structure in which intersecting reinforcing bars are fixed to each other by welding as shown in Japanese Patent Publication No. 8-14134, for example, is generally adopted. By securing a sufficient anchoring strength by each of these structural systems, the main beams of the beam are prevented from falling out of the concrete.

【0005】[0005]

【発明が解決しようとする課題】しかしながら、以上の
定着構造にあっては、上下方向に重なり合って相互に交
錯するX−Y方向の多数の主筋によって作業スペースが
制限され、施工が面倒であるとともに、対向する梁主筋
同士を接合する関係上、プレキャスト梁に高度な製作精
度が要求されるほか、これに応じて高い施工精度が要求
されるため、例えばクレーンなどによる梁の位置決め作
業などにも手間取るなどの問題があった。
However, in the above fixing structure, the work space is limited by a large number of main lines in the X and Y directions which are overlapped in the vertical direction and intersect with each other, and the construction is troublesome. Because the main beam reinforcements facing each other are joined together, the precast beams require high manufacturing accuracy, and accordingly high construction accuracy is required. For example, it takes time to perform beam positioning work using a crane or the like. There was such a problem.

【0006】また、特に特公平8−14134号公報に
示す溶接方式では、雨天時には溶接作業ができないた
め、天候などにも影響される欠点があった。
In addition, the welding method disclosed in Japanese Patent Publication No. Hei 8-14134 has a drawback that the welding operation cannot be performed in rainy weather and is affected by the weather.

【0007】この発明は以上の問題を解決するものであ
って、その目的は、定着強度を高く確保しつつ、定着作
業性を簡略化できるようにした柱・梁接合部における梁
主筋の定着構造を提供するものである。
An object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to provide a fixing structure of a beam main reinforcing bar at a column / beam joint, which can simplify fixing workability while securing high fixing strength. Is provided.

【0008】[0008]

【課題を解決するための手段】以上の目的を達成するた
め、本発明は、鉄筋コンクリート構造物の柱と、この柱
に交差して配置される複数の梁との接合部で、各梁の端
部より突出する梁主筋を柱主筋の内側にて継手を介して
定着する構造において、前記継手は、前記柱主筋で囲わ
れた内側に配されて井桁状に組立可能なはめ込み溝を有
する四枚の短冊形の定着金具からなり、該定着金具に各
梁より突出する梁主筋の端部が固着されて、該各定着金
具を相互に井桁状に組付固定して各梁主筋を柱内部に定
着するものである。
SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a joint between a column of a reinforced concrete structure and a plurality of beams intersecting the column. In the structure in which the beam main bar protruding from the portion is fixed via a joint inside the column main bar, the joint has four fitting grooves which are arranged inside the column main bar and which can be assembled in a girder shape. An end of a beam main bar protruding from each beam is fixed to the fixing bracket, and the fixing brackets are assembled and fixed to each other in a cross-girder shape, and each beam main bar is installed inside the pillar. It will settle.

【0009】従って、この発明では、対向する梁主筋同
士を直接継ぐ従来の構造方式に比べて、梁主筋同士の直
線度を厳密に要求されず、その調整の手間も省ける。
Therefore, in the present invention, the straightness between the beam main reinforcements is not strictly required as compared with the conventional structure in which the beam reinforcements facing each other are directly joined, and the labor for adjusting the straightness can be omitted.

【0010】また組立時には各定着金具一枚ずつを対面
する梁主筋に接合すればよいため、定着作業が簡単で、
その後の井桁状の組立完了状態では梁主筋の引抜き力
は、これを止めている定着金具を介してこれと直交する
定着金具に伝達されるため、高い定着性を得ることがで
きる。(請求項1) ここで、前記定着金具には前記梁主筋が貫通する複数の
切欠を設けておき、前記梁主筋にはネジ鉄筋を用い、該
切欠きに各梁より突出する梁主筋の端部を挿通させて、
該端部に螺合された複数個の定着ナットで該端部と該定
着金具とを固着する構成とすることができ、このような
構成にすると、定着ナットを締め込んでいくことで定着
金具同士を容易に係合状態に設定でき、複数の梁相互間
での梁主筋の引抜き力の伝達をより確実に行わせ得る。
(請求項2) あるいは、前記梁主筋に丸鋼を用いる場合には、その梁
主筋の端部に前記定着金具を溶接接合で予め一体的に固
着するようにしても良く、このように梁主筋の端部に予
め定着金具を固着しておけば、柱上に梁を載置するだけ
で容易に定着金具を井桁状に組み付けることができる。
(請求項3) また、前記定着金具同士を井桁状に組むために各定着金
具に形成されたはめ込み溝を、各定着金具の板厚よりも
十分大きな溝幅に形成することにより、井桁に組付ける
際の作業性も簡略化できる。(請求項4)
[0010] In addition, at the time of assembling, it is only necessary to join one piece of each fixing metal to the main beam reinforcing bar, so that the fixing operation is simple.
In the subsequent completion of the cross-girder assembly, the pull-out force of the beam main reinforcement is transmitted to the fixing bracket that is orthogonal to the beam through the fixing bracket that has stopped the beam, so that high fixing properties can be obtained. (Claim 1) Here, the fixing fitting is provided with a plurality of notches through which the main beam of the beam penetrates, and a threaded reinforcing bar is used for the main beam of the beam, and the notch has an end of the main beam of the beam protruding from each beam. Part through,
The end portion and the fixing bracket can be fixed to each other by a plurality of fixing nuts screwed to the end portion. In such a configuration, the fixing bracket is tightened by tightening the fixing nut. They can be easily set in the engaged state, and the transmission of the pullout force of the beam main rebar between the plurality of beams can be performed more reliably.
(Claim 2) Alternatively, when a round bar is used for the beam main reinforcement, the fixing fitting may be integrally fixed to an end of the beam main reinforcement in advance by welding. If the fixing bracket is fixed to the end of the fixing member in advance, the fixing bracket can be easily assembled in a cross-girder form only by placing the beam on the pillar.
(Claim 3) Further, in order to assemble the fixing metal fittings in a cross-girder shape, the fitting groove formed in each fixing metal fitting is formed to have a groove width sufficiently larger than the plate thickness of each fixing metal fitting, thereby assembling to the cross-girder. Workability at the time can also be simplified. (Claim 4)

【0011】[0011]

【発明の実施の形態】以下、本発明の好ましい実施の形
態につき、添付図面を参照して詳細に説明する。図1〜
図3はこの発明の第一実施形態を示している。なお、各
図において、従来と同一箇所には同一符号を用い、異な
る部分、あるいは新たに付加された部分にのみ異なる符
号を用いて説明する。
Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. Figure 1
FIG. 3 shows a first embodiment of the present invention. In each of the drawings, the same reference numerals will be used for the same portions as in the related art, and different portions or only newly added portions will be described using different reference numerals.

【0012】図において、各PCa梁2の端部から突出
する梁主筋3の端部を固定するための継手は、各梁主筋
3に対面する四枚の定着金具10からなるものであっ
て、図3(a)に示すように、各定着金具10は、全て
同型の短冊状をなし、かつそれぞれの中央に互いに井桁
状に組付けるための所定幅のはめ込み溝12を形成する
とともに、このはめ込み溝12の両側に梁主筋3を貫通
させて係合させるための切欠きとして、それぞれの梁主
筋3の配列に応じた複数の主筋貫通孔14を貫通形成し
たものである。
In the figure, a joint for fixing an end of a beam main bar 3 protruding from an end of each PCa beam 2 comprises four fixing brackets 10 facing each beam main bar 3. As shown in FIG. 3 (a), each fixing metal fitting 10 has a strip shape of the same shape, and has a fitting groove 12 of a predetermined width for being assembled in a cross-girder shape at the center of each fixing fitting 10, and this fitting fitting 10 is also fitted. A plurality of main-strength through holes 14 corresponding to the arrangement of the beam main reinforcements 3 are formed as cutouts for penetrating and engaging the beam main reinforcements 3 on both sides of the groove 12.

【0013】はめ込み溝12の幅は、各定着金具10の
板厚より十分に幅広であって、その溝幅分だけ井桁状へ
の組立時に各部の移動調整が行えることになる。また、
主筋貫通孔14の内径は、これに通される主筋3の外径
より十分大きめの径に設定しておくことにより、組立位
置誤差をその孔径差分だけ吸収できる。ここで、はめ込
み溝12の溝底位置に対し、主筋貫通孔14の中心位置
は上下方向にずらされている。
The width of the fitting groove 12 is sufficiently larger than the thickness of each fixing metal fitting 10, so that the movement of each part can be adjusted by the groove width at the time of assembling into a cross-girder shape. Also,
By setting the inner diameter of the main muscle through-hole 14 to a diameter sufficiently larger than the outer diameter of the main muscle 3 passed therethrough, the assembly position error can be absorbed by the difference in the hole diameter. Here, the center position of the main muscle through hole 14 is shifted in the vertical direction with respect to the groove bottom position of the fitting groove 12.

【0014】それぞれの定着金具10の梁主筋3に対す
る取付け方法としては、まず下部側の定着金具10の主
筋貫通孔14に梁主筋3の端部を通す。図示例では、梁
主筋3にはネジ鉄筋が用いられており、その端部には予
め一方の定着ナット16が螺合されている。次いで通さ
れた端部にもう一方の定着ナット16を螺合し、定着金
具10の両側をナット16により締付ける。
As a method of attaching each fixing member 10 to the main beam 3, first, the end of the main beam 3 is passed through the main bar through hole 14 of the lower fixing member 10. In the illustrated example, a threaded reinforcing bar is used for the beam main bar 3, and one fixing nut 16 is screwed in advance at an end portion thereof. Next, another fixing nut 16 is screwed into the passed end, and both sides of the fixing bracket 10 are fastened by the nut 16.

【0015】なお、この作業時において、下部側となる
定着金具10のはめ込み溝12は上向き姿勢でなければ
ならない。また、各定着ナット16はこの段階ではきつ
く締めず、組立のための融通性をもたせておく。
During this operation, the fitting groove 12 of the lower fixing metal fitting 10 must be in an upward posture. At this stage, the fixing nuts 16 are not tightly tightened, and have flexibility for assembly.

【0016】下部側の一対の定着金具10に対する主筋
3端部のナット止め終了後、上部側定着金具10をその
はめ込み溝12を下側にして下部側定着金具10のはめ
込み溝12に井桁状にはめ込み、前記梁主筋3と直交す
る梁主筋3を前記と同様のナット止め作業により組付け
る。このとき、上記のように定着金具10のはめ込み溝
12の溝底位置と主筋貫通孔14の中心位置とは上下方
向にずらされているから、上下に重なって交叉する梁主
筋3,3に対し、定着金具をそれぞれ支障なく取り付け
られる。なお、はめ込み溝12の溝底と主筋貫通孔14
の中心位置とのずれは、上下に重なって交叉する梁主筋
3,3の離間距離の1/2に設定しておくのが良い。
After the nuts at the ends of the main bars 3 are fixed to the pair of lower fixing brackets 10 with the nuts, the upper fixing bracket 10 is inserted into the fitting grooves 12 of the lower fixing bracket 10 with the fitting grooves 12 facing downward. Then, the beam main reinforcement 3 orthogonal to the beam main reinforcement 3 is assembled by the same nut fixing operation as described above. At this time, since the groove bottom position of the fitting groove 12 of the fixing metal fitting 10 and the center position of the main reinforcing bar through hole 14 are vertically displaced as described above, the beam main reinforcing bars 3, 3 which overlap vertically and intersect with each other. The fixing bracket can be attached without any trouble. Note that the groove bottom of the fitting groove 12 and the main muscle through hole 14
Is preferably set to の of the separation distance between the beam main reinforcing bars 3, 3 which overlaps vertically.

【0017】その後、各ナット16の締め度合を調整し
て各定着金具10をこれと直交する定着金具10のはめ
込み溝12の溝壁に押圧するように緊張させることで、
図1,2に示すように、各定着金具10は井桁状に係合
した継手に組立てられて柱1上に自立固定され、各梁主
筋3同士を各定着金具10を介してX−Y方向に一体的
に連結させることになる。爾後、柱1の周囲に型枠を設
置し、コンクリートを打設することで、柱・梁が一体的
に接合される。
After that, the degree of tightening of each nut 16 is adjusted, and each fixing bracket 10 is tensioned so as to press against the groove wall of the fitting groove 12 of the fixing bracket 10 orthogonal to the fixing bracket 10.
As shown in FIGS. 1 and 2, each fixing bracket 10 is assembled into a joint engaged in a cross-girder shape, is self-fixed on the column 1, and connects the beam main reinforcing bars 3 to each other via the fixing bracket 10 in the XY direction. Will be integrally connected. Thereafter, a formwork is installed around the column 1 and concrete is cast, whereby the column and beam are integrally joined.

【0018】以上の構造において、梁主筋3に加わる引
抜き力は、これを止めている各定着金具10を介してこ
れと直交配置された定着金具10に伝達され、X−Y方
向とも引抜き力を分担し、高い定着性を得ることができ
る。
In the above structure, the pull-out force applied to the beam main reinforcing bar 3 is transmitted to the fixing brackets 10 arranged perpendicular to the fixing brackets 10 stopping the pull-out forces, and the pull-out forces are also applied in the XY directions. Sharing, high fixability can be obtained.

【0019】図4は、定着金具10の形状変更例を示す
もので、この定着金具10は前記主筋貫通孔14に代え
て上端開口のU字型主筋貫通用切欠18に変更した以外
は、前記実施の形態と同様である。そして、この場合に
は、定着金具10はU字型主筋貫通用切欠18を梁主筋
3に射し込んで装着できるから、図3に示すような通し
作業が必要でなく、また梁主筋3の先端部に取り付ける
定着ナット16も2つとも予め梁主筋3に螺合しておく
ことができるため、さらに定着作業が簡素化される。
FIG. 4 shows an example of a change in the shape of the fixing metal fitting 10. The fixing metal fitting 10 is replaced with a U-shaped main notch penetrating notch 18 having an upper end opening in place of the main reinforcing rod through hole 14. This is the same as the embodiment. In this case, since the fixing bracket 10 can be mounted by projecting the U-shaped main bar penetration notch 18 into the beam main bar 3, the threading work shown in FIG. Since both of the fixing nuts 16 attached to the distal end portion can be screwed into the beam main reinforcement 3 in advance, the fixing operation is further simplified.

【0020】なお、図示例では切欠18の開口を上向き
にしてあるが、作業性に応じて開口部を下向きに配置す
ることもできる。
Although the opening of the notch 18 is directed upward in the illustrated example, the opening may be disposed downward depending on the workability.

【0021】図5は定着金具10の他の形状変更例を示
すもので、各定着金具10の組立て用はめ込み溝20の
溝幅がそれぞれの板厚にほぼ等しい以外は前記と同様で
ある。
FIG. 5 shows another modification of the shape of the fixing member 10, which is the same as the above except that the groove width of the fitting groove 20 for assembling each fixing member 10 is substantially equal to the respective plate thickness.

【0022】この事例では、前記の実施形態に比べて組
立時における融通性は乏しいが、井桁状に組立た状態で
は、梁主筋3の引抜き力のみならず、圧縮方向の力に対
しても各定着金具10に伝達し、これに分担させること
ができる。また、この事例においても、主筋貫通孔14
に代えて切欠18とすることができる。
In this case, the flexibility at the time of assembling is less than that of the above-described embodiment, but in the state where the beams are assembled, not only the pull-out force of the beam main reinforcing bar 3 but also the force in the compression direction is reduced. It can be transmitted to the fixing bracket 10 and shared therewith. Also in this case, the main muscle through hole 14
May be a notch 18.

【0023】また、上記各図の実施形態においては、梁
主筋3にはネジ鉄筋を使用しているがネジ鉄筋に変えて
丸鋼を使用し、その丸鋼の端部にねじ切りによりネジ部
を形成するようにしても良い。
Further, in the embodiment shown in each of the above-mentioned figures, a threaded reinforcing bar is used for the beam main reinforcing bar 3, but a round bar is used instead of the threaded reinforcing bar, and a threaded portion is formed at the end of the round bar by thread cutting. It may be formed.

【0024】あるいは、図示しないが梁主筋3に丸鋼を
使用してその端部に定着金具10を予め溶接接合させて
おくようにしても良い。そしてこの場合には、位置ずれ
誤差や組付け作業性の点から、定着金具10のはめ込み
溝12は前記図3に示したものと同様に、幅広に形成し
ておくのが良い。このように、定着金具10を予め張り
主筋の端部に溶接して一体的に固着しておけば、柱上に
梁の端部を載置するだけで簡易に定着金具10を井桁状
に組み合わせることができる。
Alternatively, although not shown, a round steel bar may be used for the beam main reinforcing bar 3 and the fixing bracket 10 may be welded and joined to its end in advance. In this case, it is preferable that the fitting groove 12 of the fixing bracket 10 be formed to be wide similarly to that shown in FIG. In this way, if the fixing metal fittings 10 are preliminarily welded to the ends of the main reinforcing bars and integrally fixed, the fixing metal fittings 10 can be easily combined in a cross-girder form simply by placing the ends of the beams on the columns. be able to.

【0025】また、図示例では柱1の上端部で十字型に
4本の梁2を繋ぐ場合を例示しているが、3本の梁をT
字型に繋ぐ場合、あるいは2本の梁を直線的に繋ぐ場合
にも本発明の定着構造を適用し得る。すなわち、4枚の
定着金具のうち、直線的に配置される梁の梁主筋に取り
付ける定着金具を下側にして井桁状に組み合わせれば、
上側に配置する定着金具はその下側の定着金具に係合し
て支持されるから、梁主筋に取り付けられていなくて
も、支障なく井桁状に組み立てることができ、また梁主
筋の引き抜き力にも充分対抗できる。
In the illustrated example, a case where four beams 2 are connected in a cross shape at the upper end of the column 1 is illustrated.
The fixing structure of the present invention can be applied to a case of connecting in a letter shape or a case of connecting two beams linearly. That is, of the four fixing brackets, if the fixing brackets attached to the beam main reinforcements of the beams arranged linearly are combined in a cross-shaped manner with the lower side being,
Since the fixing brackets arranged on the upper side are engaged with and supported by the fixing brackets on the lower side, even if they are not attached to the beam main reinforcement, they can be assembled in a cross-girder shape without trouble, and the pull-out force of the beam main reinforcement can be reduced. Can also compete enough.

【0026】[0026]

【発明の効果】以上の説明により明らかなように、本発
明に係る柱・梁接合部における梁主筋の定着構造によれ
ば次の様な優れた効果を奏する。
As is apparent from the above description, the anchoring structure of the main beam at the column / beam joint according to the present invention has the following excellent effects.

【0027】(1)各梁の端部より突出する梁主筋を柱
主筋の内側にて継手を介して定着する構造において、前
記継手を前記柱主筋で囲われた内側に配されて井桁状に
組立可能なはめ込み溝を有する四枚の短冊形の定着金具
で構成し、この定着金具に各梁より突出する梁主筋の端
部が固着させて、これら各定着金具を相互に井桁状に組
付固定して各梁主筋を柱内部に定着するようにした請求
項1に係る定着構造にあっては、従来のように、対向す
る梁主筋同士を直接継ぐ構造方式に比べて、梁主筋同士
の直線度を厳密に要求されず、その調整の手間も省け
る。また組立時には各定着金具一枚ずつをそれぞれ各梁
に対面させて梁主筋に接合すればよいため、また井桁状
への組立も容易であって、定着作業を簡易になし得、井
桁状への組立完了状態では梁主筋の引抜き力は、これを
止めている定着金具を介してこれと直交する定着金具に
伝達されるため、高い定着性を得ることができる。それ
故、この発明では、梁主筋の定着性を十分に高くしつ
つ、従来からの難点であった定着作業性を改善できる。
(1) In a structure in which a beam main bar projecting from an end of each beam is fixed via a joint inside the column main bar, the joint is arranged inside a column surrounded by the column main bar and has a cross-girder shape. It is composed of four strip-shaped fixing brackets with fitting grooves that can be assembled, and the ends of the beam main bars protruding from each beam are fixed to this fixing bracket, and these fixing brackets are assembled to each other in a crossbeam shape In the fixing structure according to claim 1, wherein each beam main reinforcement is fixed and fixed inside the column, the beam main reinforcements are compared with each other as compared with a conventional system in which opposing beam main reinforcements are directly connected to each other. The degree of linearity is not strictly required, and the adjustment work can be omitted. Also, at the time of assembling, it is only necessary to face each beam to each of the fixing brackets and join them to the main beam of the beam. In the assembly completed state, the pull-out force of the main beam of the beam is transmitted to the fixing bracket orthogonal to the fixing bracket that has stopped the pull-out force, so that a high fixing property can be obtained. Therefore, according to the present invention, it is possible to improve the fixing workability, which has been a conventional difficulty, while sufficiently increasing the fixability of the beam main reinforcement.

【0028】(2)前記定着金具には前記梁主筋が貫通
する複数の切欠を設けて、その梁主筋にはネジ鉄筋を用
い、前記切欠きに各梁より突出する梁主筋の端部を挿通
させて、その梁主筋の端部に螺合させた複数個の定着ナ
ットで各梁主筋の端部と定着金具とを固着するようにし
た請求項2に係る定着構造にあっては、定着ナットを締
め込んでいくことで定着金具同士を容易に押圧当接させ
て係合状態に設定でき、複数の梁相互間での梁主筋の引
抜き力の伝達をより確実に行わせることができる。
(2) The fixing bracket is provided with a plurality of cutouts through which the main beam of the beam penetrates, and a threaded reinforcing bar is used as the main beam of the beam, and the end of the main beam of the beam projecting from each beam is inserted into the notch. 3. The fixing structure according to claim 2, wherein the end of each beam main bar and the fixing bracket are fixed by a plurality of fixing nuts screwed to the end of the beam main bar. By tightening the fixing members, the fixing members can be easily pressed and contacted with each other to be set in an engaged state, so that the pull-out force of the main beam of the beam between the plurality of beams can be transmitted more reliably.

【0029】(3)前記梁主筋に丸鋼を用い、その梁主
筋の端部に前記定着金具を予め溶接接合で一体的に固着
しておくようにした請求項3に係る定着構造にあって
は、柱上に梁を載置するだけで容易に定着金具を井桁状
に組み付けることができる。
(3) The fixing structure according to claim 3, wherein a round steel is used for the beam main reinforcement, and the fixing bracket is integrally fixed to an end of the beam main reinforcement in advance by welding. The fixing bracket can be easily assembled in a girder shape by simply placing the beam on the pillar.

【0030】(4)前記定着金具同士を井桁状に組むた
めに各定着金具に形成するはめ込み溝を、各定着金具の
板厚よりも十分大きな溝幅に形成するようにした請求項
4に係る定着構造では、井桁に組付ける際の作業性も可
及的に簡略化できる。
(4) The fixing device according to claim 4, wherein the fitting groove formed in each fixing member for assembling the fixing members in a grid shape has a groove width sufficiently larger than the plate thickness of each fixing member. With the structure, the workability when assembling to the girder can be simplified as much as possible.

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

【図1】本発明に係る定着構造を備えた柱・梁接合部の
平断面図である。
FIG. 1 is a plan sectional view of a column / beam joint having a fixing structure according to the present invention.

【図2】図1のA−A線における縦断面図である。FIG. 2 is a longitudinal sectional view taken along line AA of FIG.

【図3】(a),(b)は井桁状定着金具の分解図及び
組立図である。
FIGS. 3 (a) and 3 (b) are an exploded view and an assembled view of a cross-shaped fixing metal fitting.

【図4】定着金具の形状変更例を示す組立図である。FIG. 4 is an assembly view showing an example of changing the shape of the fixing metal.

【図5】定着金具の他の形状変更例を示す組立図であ
る。
FIG. 5 is an assembly view showing another example of a shape change of the fixing bracket.

【図6】従来の定着構造における柱・梁接合部の平断面
図である。
FIG. 6 is a plan sectional view of a column / beam joint in a conventional fixing structure.

【符号の説明】[Explanation of symbols]

1 柱 2 梁 3 梁主筋 4 柱主筋 10 定着金具 12,20 組立て用はめ込み溝 14 主筋貫通孔 16 定着ナット 18 主筋通し用切欠 DESCRIPTION OF SYMBOLS 1 Pillar 2 Beam 3 Beam main reinforcement 4 Column main reinforcement 10 Fixing bracket 12, 20 Fitting groove for assembly 14 Main reinforcement through hole 16 Fixation nut 18 Notch for main reinforcement passage

───────────────────────────────────────────────────── フロントページの続き (72)発明者 小柳 光生 東京都清瀬市下清戸4丁目640番地 株式 会社大林組技術研究所内 (72)発明者 米沢 健次 東京都清瀬市下清戸4丁目640番地 株式 会社大林組技術研究所内 (72)発明者 小林 譲 東京都清瀬市下清戸4丁目640番地 株式 会社大林組技術研究所内 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Mitsuo Koyanagi 4-640 Shimoseito, Kiyose-shi, Tokyo Inside the Obayashi Corporation Technical Research Institute (72) Inventor Kenji Yonezawa 4-640 Shimoseito, Kiyose-shi, Tokyo Japan Obayashi Technical Research (72) Inventor Joe Kobayashi 4-640 Shimoseito, Kiyose-shi, Tokyo Inside Obayashi Technical Research Institute

Claims (4)

【特許請求の範囲】[Claims] 【請求項1】 鉄筋コンクリート構造物の柱と、この柱
に交差して配置される複数の梁との接合部で、各梁の端
部より突出する梁主筋を柱主筋の内側にて継手を介して
定着する構造において、 前記継手は、前記柱主筋で囲われた内側に配されて井桁
状に組立可能なはめ込み溝を有する四枚の短冊形の定着
金具からなり、 該定着金具に各梁より突出する梁主筋の端部が固着され
て、該各定着金具を相互に井桁状に組付固定して各梁主
筋を柱内部に定着する、 ことを特徴とする柱・梁接合部における梁主筋の定着構
造。
At a joint between a column of a reinforced concrete structure and a plurality of beams arranged to intersect the column, a beam main bar projecting from an end of each beam is connected via a joint inside the column main bar. In the fixing structure, the joint is formed of four strip-shaped fixing brackets each having a fitting groove disposed inside the column main reinforcing bar and capable of being assembled in a cross-girder shape. An end of the projecting beam main bar is fixed, and the fixing brackets are assembled and fixed to each other in a cross-shaped manner to fix each beam main bar inside the column. Fixing structure.
【請求項2】 前記定着金具は前記梁主筋が貫通する複
数の切欠を有する一方、前記梁主筋がネジ鉄筋でなり、 該切欠きに各梁より突出する梁主筋の端部を挿通させ
て、該端部に螺合された複数個の定着ナットで該端部と
該定着金具とを固着する、 ことを特徴とする請求項1記載の柱・梁接合部における
梁主筋の定着構造。
2. The fixing bracket has a plurality of cutouts through which the main beam of the beam penetrates, while the main beam of the beam is formed of a threaded reinforcing bar, and the end of the main beam of the beam protruding from each beam is inserted into the notch. The fixing structure of a beam main reinforcing bar at a column / beam joint according to claim 1, wherein the fixing portion is fixed to the end portion by a plurality of fixing nuts screwed to the end portion.
【請求項3】 前記梁主筋が丸鋼でなり、該梁主筋の端
部に前記定着金具が予め一体的に溶接接合されている、 ことを特徴とする請求項1記載の柱・梁接合部における
梁主筋の定着構造。
3. The column / beam joint according to claim 1, wherein the beam main reinforcement is made of round steel, and the fixing bracket is integrally welded to an end of the beam main reinforcement in advance. Anchor structure of main beam reinforcement in the building.
【請求項4】 前記定着金具同士を井桁状に組むために
各定着金具に形成されたはめ込み溝を、各定着金具の板
厚よりも十分大きな溝幅に形成したことを特徴とする請
求項1〜3のいずれかに記載の柱・梁接合部における梁
主筋の定着構造。
4. The fixing groove according to claim 1, wherein the fitting groove formed in each fixing bracket for assembling the fixing brackets in a cross-girder shape has a groove width sufficiently larger than the plate thickness of each fixing bracket. 3. The anchoring structure of a beam main reinforcing bar at the column / beam joint according to any one of 3.
JP9185194A 1997-07-10 1997-07-10 Anchored structure of beam main reinforcement at column-to-beam junction Granted JPH1129979A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9185194A JPH1129979A (en) 1997-07-10 1997-07-10 Anchored structure of beam main reinforcement at column-to-beam junction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9185194A JPH1129979A (en) 1997-07-10 1997-07-10 Anchored structure of beam main reinforcement at column-to-beam junction

Publications (1)

Publication Number Publication Date
JPH1129979A true JPH1129979A (en) 1999-02-02

Family

ID=16166512

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9185194A Granted JPH1129979A (en) 1997-07-10 1997-07-10 Anchored structure of beam main reinforcement at column-to-beam junction

Country Status (1)

Country Link
JP (1) JPH1129979A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005226258A (en) * 2004-02-10 2005-08-25 Fujita Corp Anchorage hardware with anchor bar
JP2010048054A (en) * 2008-08-25 2010-03-04 Ohbayashi Corp Placing method and joint structure
EP2966232A1 (en) * 2014-07-07 2016-01-13 Fundacíon Tecnalia Research & Innovation Dry joint joining device between columns and beams of precast reinforced concrete
KR20180035964A (en) * 2016-09-29 2018-04-09 주식회사부원비엠에스 Dual type rebar anchoring device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005226258A (en) * 2004-02-10 2005-08-25 Fujita Corp Anchorage hardware with anchor bar
JP2010048054A (en) * 2008-08-25 2010-03-04 Ohbayashi Corp Placing method and joint structure
EP2966232A1 (en) * 2014-07-07 2016-01-13 Fundacíon Tecnalia Research & Innovation Dry joint joining device between columns and beams of precast reinforced concrete
WO2016005632A3 (en) * 2014-07-07 2016-05-06 Fundación Tecnalia Research & Innovation Dry joint joining device between columns and beams of precast reinforced concrete
KR20180035964A (en) * 2016-09-29 2018-04-09 주식회사부원비엠에스 Dual type rebar anchoring device
KR101875561B1 (en) * 2016-09-29 2018-07-09 주식회사부원비엠에스 Dual type rebar anchoring device

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