JPH1129987A - Unbonded brace - Google Patents

Unbonded brace

Info

Publication number
JPH1129987A
JPH1129987A JP18795597A JP18795597A JPH1129987A JP H1129987 A JPH1129987 A JP H1129987A JP 18795597 A JP18795597 A JP 18795597A JP 18795597 A JP18795597 A JP 18795597A JP H1129987 A JPH1129987 A JP H1129987A
Authority
JP
Japan
Prior art keywords
brace
unbonded
bending
stiffening
brace body
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
JP18795597A
Other languages
Japanese (ja)
Other versions
JP3601942B2 (en
Inventor
Hiroshi Une
博志 畝
Hirofumi Kaneko
洋文 金子
Toru Usami
徹 宇佐美
Teruo Sasaki
照夫 佐々木
Ryota Kono
良太 鴻野
Naomiki Suzuki
直幹 鈴木
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.)
Takenaka Komuten Co Ltd
Original Assignee
Takenaka Komuten Co Ltd
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 Takenaka Komuten Co Ltd filed Critical Takenaka Komuten Co Ltd
Priority to JP18795597A priority Critical patent/JP3601942B2/en
Publication of JPH1129987A publication Critical patent/JPH1129987A/en
Application granted granted Critical
Publication of JP3601942B2 publication Critical patent/JP3601942B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Joining Of Building Structures In Genera (AREA)
  • Reinforcement Elements For Buildings (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide an unbonded brace which is easy to manufacture, is relatively lightweight, is excellent in quality and construction properties, and has good performance regarding assisting rigidity against buckling. SOLUTION: An unbonded brace is provided with a brace main body 2 bearing axial forces and a buckling-prevention rigidity assisting cylinder 3 put over the brace main body 2. In that case, the rigidity assisting cylinder 3 is circumferentially split, a connecting member B connecting the split cylindrical members 3A together is provided, and deflection restraining parts 7 restraining deflection of the brace main body 2 caused by the action of a compressive axial force on the brace main body 2 are provided in the connecting member B.

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】本発明は、軸力を負担するブ
レース本体を設け、前記ブレース本体に被さる状態に座
屈防止用補剛筒を設けてあるアンボンドブレースに関す
る。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an unbonded brace provided with a brace body for bearing an axial force and a stiffening tube for preventing buckling provided over the brace body.

【0002】[0002]

【従来の技術】アンボンドブレースは、ブレース本体に
外嵌させた補剛筒によって、ブレース本体の撓みや座屈
を抑制し、ブレースの塑性変形能力を高め、架構全体と
しての鋼材量の減少をはかるものであるから、ブレース
本体と補剛筒との間に隙間を形成しないのが好ましい。
従来、この種のアンボンドブレースとしては、図6に示
すように、補剛筒30に一体形成の鋼管を使用し、ブレ
ース本体2を補剛筒30に挿通する際にスムースに実施
できるように大きめの径に形成した前記補剛筒30と、
挿通させたブレース本体2との間の空間に、コンクリー
トを充填してあるものがあった(例えば、実開平5−5
7111号公報参照)。また、他のアンボンドブレース
としては、図7に示すように、周方向に分割構成とした
補剛筒30を用い、ブレース本体2の外周部に、その補
剛筒分割体30Aを沿う状態に配置して、各補剛筒分割
体30同士を、ボルト接合して一体化するものがあった
(例えば、実開平5−3402号公報参照)。
2. Description of the Related Art An unbonded brace uses a stiffening tube externally fitted to a brace body to suppress the bending and buckling of the brace body, increase the plastic deformation capability of the brace, and reduce the amount of steel as a whole frame. Therefore, it is preferable that no gap is formed between the brace body and the stiffening cylinder.
Conventionally, as this type of unbonded brace, as shown in FIG. 6, a steel pipe integrally formed with the stiffening cylinder 30 is used, and the steel pipe is large enough so that the brace body 2 can be smoothly inserted into the stiffening cylinder 30. Said stiffening cylinder 30 formed to a diameter of
There is a space filled with concrete in the space between the inserted brace body 2 (for example, 5-5).
7111). As another unbonded brace, as shown in FIG. 7, a stiffening cylinder 30 divided in a circumferential direction is used, and the stiffening cylinder divided body 30 </ b> A is arranged on the outer peripheral portion of the brace body 2. In some cases, the stiffening cylinder divided bodies 30 are joined together by bolting (for example, see Japanese Utility Model Laid-Open No. 5-3402).

【0003】[0003]

【発明が解決しようとする課題】上述した前者の従来の
アンボンドブレースによれば、補剛筒の寸法を大きく形
成してあるから、補剛筒内にコンクリートを充填する工
程が必要となると共に、その工程に先立って、コンクリ
ートが漏れ出ないための、補剛筒内空部の閉塞作業(具
体的には、補剛筒端縁部に閉塞用のプレートを取り付け
る)が必要となり、アンボンドブレースの形成手間がか
かるという問題点がある。更には、前記補剛筒内空部へ
充填されたコンクリートによって、ブレース全体の重量
が増加し、取扱性が悪いと共に、コンクリートの乾燥収
縮ひび割れを発生させないように管理、取り扱いに細心
の注意を払う必要があり面倒であった。
According to the former conventional unbonded brace, since the size of the stiffening cylinder is made large, a step of filling the stiffening cylinder with concrete is required, and Prior to this step, it is necessary to close the inner space of the stiffening cylinder (specifically, attach a plate for closing the rim of the stiffening cylinder) to prevent concrete from leaking out. There is a problem that it takes time to form. Further, due to the concrete filled in the inner space of the stiffening cylinder, the weight of the entire brace increases, and the handling is poor. In addition, the concrete is carefully managed and handled so as not to cause cracks in the drying shrinkage of the concrete. It was necessary and troublesome.

【0004】また、上述した後者の従来のアンボンドブ
レースによれば、ブレース本体の外周部に沿う形状に各
補剛筒分割体を形成する必要があり、各部材の寸法誤差
を考慮すると、なかなかぴったりとした状態に形成した
り、組み付けたりするのが困難であるのが現状で、図に
示したように、ブレース本体が単純な断面形状の帯鋼を
採用する場合には、比較的寸法精度は問題になりにくい
が、ブレース本体の断面形状が複雑な場合(例えば、H
形鋼や、山形鋼や、溝形鋼等の場合)、各補剛筒分割体
の寸法加工や、組み付け作業に手間がかかるという問題
点がある。
Further, according to the above-mentioned conventional unbonded brace, it is necessary to form each stiffening cylinder divided body in a shape along the outer peripheral portion of the brace main body. At present, it is difficult to form or assemble it, and as shown in the figure, when the brace body adopts a strip steel with a simple cross-sectional shape, the dimensional accuracy is relatively high. Although it is unlikely to cause a problem, when the cross-sectional shape of the brace body is complicated (for example, H
In the case of shaped steel, angle iron, grooved steel, etc.), there is a problem that it takes time to perform dimensional processing and assembling work of each stiffening cylinder divided body.

【0005】従って、本発明の目的は、上記問題点を解
消し、製造が容易で比較的に軽量であり、品質・施工性
に優れ、座屈補剛性能の良いアンボンドブレースを提供
するところにある。
Accordingly, it is an object of the present invention to provide an unbonded brace which solves the above-mentioned problems, is easy to manufacture, is relatively lightweight, is excellent in quality and workability, and has good buckling supplemental rigidity. is there.

【0006】[0006]

【課題を解決するための手段】[Means for Solving the Problems]

〔構成〕請求項1の発明の特徴構成は、図2・4・5に
例示するごとく、軸力を負担するブレース本体2を設
け、前記ブレース本体2に被さる状態に座屈防止用補剛
筒3を設けてあるアンボンドブレースにおいて、前記補
剛筒3を周方向に分割構成とし、各分割筒部材3Aどう
しを連結する連結部材Bを設け、前記連結部材Bに、前
記ブレース本体2への圧縮軸力の作用で生じる前記ブレ
ース本体2の撓みを抑制する撓み抑制部7を設けてある
ところにある。
[Structure] A characteristic structure of the invention of claim 1 is that, as exemplified in FIGS. 2, 4, and 5, a brace body 2 that bears an axial force is provided, and In the unbonded brace provided with 3, the stiffening cylinder 3 is divided in the circumferential direction, and a connecting member B for connecting the divided cylindrical members 3A is provided, and the connecting member B is compressed into the brace body 2. There is provided a bending suppressing portion 7 for suppressing the bending of the brace body 2 caused by the action of the axial force.

【0007】請求項2の発明の特徴構成は、図2・4・
5に例示するごとく、前記撓み抑制部7を、少なくとも
一対設けてあり、それら一対の撓み抑制部7は、前記ブ
レース本体2に対する撓み抑制状態において、前記ブレ
ース本体2の表裏面で対向する状態に構成してあるとこ
ろにある。
The characteristic structure of the second aspect of the present invention is shown in FIG.
As illustrated in FIG. 5, at least one pair of the bending suppression portions 7 is provided, and the pair of bending suppression portions 7 are in a state where the bending suppression portions 7 are opposed to each other on the front and back surfaces of the brace body 2 in the bending suppression state with respect to the brace body 2. It is where it is composed.

【0008】請求項3の発明の特徴構成は、図2・4・
5に例示するごとく、前記ブレース本体2は、H形鋼で
あり、前記撓み抑制部7は、前記補剛筒3に、前記H形
鋼のウェブに当接自在な状態に取り付けられたボルトで
あるところにある。
[0008] The characteristic structure of the invention of claim 3 is shown in Figs.
As illustrated in FIG. 5, the brace body 2 is an H-shaped steel, and the deflection suppressing portion 7 is a bolt attached to the stiffening cylinder 3 so as to be in contact with the web of the H-shaped steel. There is a place.

【0009】尚、上述のように、図面との対照を便利に
するために符号を記したが、該記入により本発明は添付
図面の構成に限定されるものではない。
Note that, as described above, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the accompanying drawings.

【0010】〔作用及び効果〕請求項1の発明の特徴構
成によれば、前記補剛筒を周方向に分割構成とし、各分
割筒部材どうしを連結する連結部材を設け、前記連結部
材に、前記ブレース本体への圧縮軸力の作用で生じる前
記ブレース本体の撓みを抑制する撓み抑制部を設けてあ
るから、前記連結部材で各分割筒部材を連結して、その
まま、ブレース本体の撓みを連結部材の撓み抑制部によ
って抑制できる状態に構成することが可能となり、従来
のように、コンクリートを充填する手間が省けると共
に、ブレースの軽量化を図り、且つ、効率よくアンボン
ドブレースを形成することが可能となる。更には、前記
撓み抑制部によってブレース本体の撓みを抑制すること
ができるから、各分割筒部材そのものは、必ずしも、ブ
レース本体にぴったりとフィットしなくても撓み抑制を
図ることが可能となる。即ち、補剛筒の寸法設定を、従
来に比べてラフに設定しても、良好な座屈補剛性能を確
保することが可能となり、アンボンドブレースの製作手
間の軽減や、組み付け作業の効率化を図ることが可能と
なる。その結果、アンボンドブレースの性能を維持しな
がら、施工性をも向上させることが可能となる。
According to the first aspect of the present invention, the stiffening cylinder is divided in the circumferential direction, and a connecting member for connecting the divided cylindrical members is provided. Since the brace body is provided with a bending suppression portion that suppresses the bending of the brace body caused by the action of the compressive axial force on the brace body, the connecting members are connected to each other, and the bending of the brace body is connected as it is. It is possible to configure in a state where it can be suppressed by the deflection suppressing portion of the member, and it is possible to save the labor of filling concrete, reduce the weight of the brace, and efficiently form the unbonded brace as in the past. Becomes Furthermore, since the bending of the brace body can be suppressed by the bending suppressing portion, it is possible to suppress the bending of each of the divided tubular members without necessarily fitting the brace body. In other words, even if the stiffening cylinder dimensions are set rougher than before, it is possible to secure good buckling stiffening ability, reduce the labor required for manufacturing unbonded braces, and increase the efficiency of assembly work. Can be achieved. As a result, it is possible to improve the workability while maintaining the performance of the unbonded brace.

【0011】請求項2の発明の特徴構成によれば、請求
項1の発明による作用効果を叶えることができるのに加
えて、前記撓み抑制部を、少なくとも一対設けてあり、
それら一対の撓み抑制部は、前記ブレース本体に対する
撓み抑制状態において、前記ブレース本体の表裏面で対
向する状態に構成してから、前記撓み抑制部が接当する
ブレース本体部分において、表裏両面側への撓みを同じ
条件で抑制することが可能となり、撓み抑制効果の方向
性を低減し、より、初期撓みの生じにくいアンボンドブ
レースに構成することが可能となる。
According to the characteristic configuration of the second aspect of the present invention, in addition to the effect of the first aspect of the present invention, at least one pair of the deflection suppressing portions is provided,
The pair of flexure suppressing portions are configured to be opposed to each other on the front and back surfaces of the brace body in the flexure restraining state with respect to the brace body, and then, in the brace body portion contacted by the flexure suppressing portion, to the front and back surfaces. Can be suppressed under the same conditions, the directionality of the bending suppression effect can be reduced, and an unbonded brace in which initial bending is less likely to occur can be configured.

【0012】請求項3の発明の特徴構成によれば、請求
項1又は2の発明による作用効果を叶えることができる
のに加えて、前記ブレース本体は、H形鋼であり、前記
撓み抑制部は、前記補剛筒に、前記H形鋼のウェブに当
接自在な状態に取り付けられたボルトであるあるから、
ボルトを螺進させてH形鋼に当接させるだけの操作で、
ブレース本体の座屈上の弱軸方向の撓み抑制を図ること
が可能となり、簡単且つスピーディーにアンボンドブレ
ースを形成することが可能となる。更には、ブレース本
体の歪みによって、もともと撓んでいるような場合に、
前記ボルトの締め込みの度合いを調整して、その撓みを
少なくさせることも可能となる。
According to the characteristic configuration of the third aspect of the present invention, in addition to the effects of the first or second aspect of the present invention, the brace body is an H-shaped steel, and the deflection suppressing portion is provided. Is a bolt attached to the stiffening cylinder so as to be able to contact the web of the H-section steel,
By just screwing the bolt and making contact with the H-shaped steel,
It becomes possible to suppress the bending in the weak axis direction on the buckling of the brace body, and it is possible to form the unbonded brace easily and speedily. Furthermore, in the case where it is originally bent by the distortion of the brace body,
By adjusting the degree of tightening of the bolt, it is also possible to reduce the bending.

【0013】[0013]

【発明の実施の形態】以下に本発明の実施の形態を図面
に基づいて説明する。尚、図面において従来例と同一の
符号で表示した部分は、同一又は相当の部分を示してい
る。
Embodiments of the present invention will be described below with reference to the drawings. In the drawings, portions denoted by the same reference numerals as those of the conventional example indicate the same or corresponding portions.

【0014】図1は、本発明に係わるアンボンドブレー
スの一例品であるブレース1を、設置してある状況を示
すもので、鉄骨構造の梁部材X(又は、柱部材Y、又
は、それら両方)に対して斜めにわたる状態に取り付け
てある。
FIG. 1 shows a situation in which a brace 1, which is an example of an unbonded brace according to the present invention, is installed. A beam member X (or a column member Y or both) having a steel structure is shown. It is installed in a state that extends obliquely with respect to.

【0015】前記ブレース1は、図1・2に示すよう
に、軸力を負担するH形鋼ブレース本体(ブレース本体
の一例で、以後、単に芯材という)2を設け、前記芯材
2に被さる状態に座屈防止用補剛角筒(座屈防止用補剛
筒の一例で、以後、単に補剛筒という)3を設けて構成
してある。そして、前記芯材2と補剛筒3とは、前記芯
材2への軸力の作用に伴う軸方向の力の伝達が、実質上
無視でき得る程度に取り付けてある。従って、ブレース
1に対する引張力に関しては、前記芯材2の引張耐力に
よってもたせ、圧縮力に関しては、前記補剛筒3によっ
て芯材の撓みを抑制して座屈防止を図りながら、芯材2
の降伏軸力以上の圧縮耐力を発揮させてもたすことがで
きるものである。前記芯材2の両端部における補剛筒3
が被さってない部分を、無補剛区間4といい、芯材2の
中間部における補剛筒3が被さっている部分を、補剛区
間5という。
As shown in FIGS. 1 and 2, the brace 1 is provided with an H-shaped steel brace body (an example of a brace body, hereinafter simply referred to as a core material) 2 which bears an axial force. A stiffening rectangular tube for preventing buckling (an example of a stiffening tube for buckling prevention, hereinafter simply referred to as a stiffening tube) 3 is provided in a state of being covered. The core member 2 and the stiffening cylinder 3 are attached to such an extent that the transmission of the axial force accompanying the action of the axial force on the core member 2 can be substantially ignored. Therefore, the tensile force against the brace 1 is given by the tensile strength of the core material 2, and the compressive force is controlled by the stiffening cylinder 3 to suppress the bending of the core material to prevent buckling,
Can be achieved even when a compression proof strength not less than the yielding axial force is exhibited. Stiffening cylinders 3 at both ends of the core 2
The portion which is not covered is referred to as a non-stiffened section 4, and the portion of the intermediate portion of the core material 2 covered by the stiffening cylinder 3 is referred to as a stiffened section 5.

【0016】本実施形態のブレース1においては、無補
剛区間4を、長くすることによって、ブレース1の取付
作業時に、補剛筒3が邪魔になって作業し難くなるのを
防止し、効率よく取り付け作業を実施できるようにして
ある。但し、前記無補剛区間4は、補強用プレート6を
芯材2に溶接して補強してある。
In the brace 1 of the present embodiment, by increasing the length of the non-stiffened section 4, it is possible to prevent the stiffening cylinder 3 from hindering the work when the brace 1 is attached, thereby improving the efficiency. The installation work can be performed. However, the non-stiffened section 4 is reinforced by welding a reinforcing plate 6 to the core material 2.

【0017】前記補剛筒3は、周方向に四分割の構成に
してあり、各分割筒部材3Aを組み付けることによって
前記芯材2に外嵌する四角筒が形成される。前記分割筒
部材3Aの詳細は、図に示すように、芯材2のフランジ
2bに対向する部位に位置させる一対の溝形鋼と、芯材
2のウェブ2aに対向する部位に位置させる一対の帯形
鋼とから構成されている。また、隣接する分割筒部材3
Aどうしは、ボルト(連結部材の一例)Bによって連結
されている。そして、連結ボルトBは、螺進することに
よって、先端部が前記ウェブ2aに当接し、芯材の座屈
に備えて撓みを抑制することができるように構成してあ
る(以後、単に撓み抑制状態という)。前記ボルトBの
軸部によって撓み抑制部7が構成されている。このボル
トBは、図2に示すように、補剛筒3の長手方向に所定
の間隔をあけた複数箇所にそれぞれで取り付けてあり、
詳しい取り付け方は、帯形鋼のボルト挿通孔にボルトB
を挿通させると共に溝形鋼のネジ孔にボルトBを螺合さ
せて、ボルトBの頭部に螺合させた挟持用ナット7aを
使用して、そのナット7aと前記溝形鋼とで、帯形鋼を
挟み込む状態で実施される。従って、ボルトBを、前記
撓み抑制状態となるように螺進操作することによって、
芯材2と補剛筒3との隙間での初期撓みを拘束し、撓み
変形によって生じる付加曲げを低減することが可能とな
る。その結果、前記補剛筒3によって、芯材の撓みを抑
制して座屈防止を図りながら、芯材2の降伏軸力以上の
圧縮耐力を発揮させることが可能となる。
The stiffening cylinder 3 is divided into four parts in the circumferential direction, and a square cylinder that fits over the core member 2 is formed by assembling the divided cylinder members 3A. As shown in the figure, the details of the divided cylindrical member 3A are as follows: It is composed of strip steel. In addition, the adjacent divided cylindrical member 3
A is connected by bolts (an example of a connecting member) B. The connecting bolt B is configured such that the tip end thereof abuts on the web 2a by screwing, so that bending can be suppressed in preparation for buckling of the core material (hereinafter simply bending suppression). State). The bending portion 7 is constituted by the shaft portion of the bolt B. As shown in FIG. 2, the bolts B are respectively attached to a plurality of locations at predetermined intervals in the longitudinal direction of the stiffening cylinder 3.
For details on how to install, use bolt B
And the bolt B is screwed into the screw hole of the channel steel, and a clamping nut 7a screwed into the head of the bolt B is used. It is carried out in a state where the section steel is sandwiched. Therefore, by operating the bolt B so as to be in the bending restrained state,
The initial bending in the gap between the core member 2 and the stiffening cylinder 3 is restrained, and the additional bending caused by the bending deformation can be reduced. As a result, the stiffening cylinder 3 makes it possible to exert a compressive strength equal to or higher than the yielding axial force of the core material 2 while suppressing bending of the core material and preventing buckling.

【0018】次に、前記無補剛区間4の芯材2の補強に
ついて説明する。詳しくは、無補剛区間4と補剛区間5
の一部(本実施形態においては、芯材2のフランジ幅寸
法の二倍の寸法にあたる区間長)とにわたって、図2に
示すように、補強用プレート6を芯材2のフランジ2b
の内周面に沿う状態に溶接して補強してある。従って、
圧縮軸力が芯材2に作用した場合に、補剛区間5は前記
補剛筒3によって撓みを抑制されているのに対して、無
補剛区間4については、このプレート6による芯材補強
を図ってあるので、無補剛区間4と補剛区間5との境界
で、芯材に前記付加曲げが発生して座屈するのを防止し
ながら、ブレース1全体として、芯材2の降伏軸力以上
の圧縮耐力を発揮させることが可能となる。
Next, reinforcement of the core member 2 in the non-stiffened section 4 will be described. For details, stiffening section 4 and stiffening section 5
(In the present embodiment, a section length corresponding to twice the flange width dimension of the core member 2), as shown in FIG.
It is reinforced by welding along the inner peripheral surface of. Therefore,
When the compressive axial force acts on the core member 2, the stiffening section 5 is restrained from being bent by the stiffening cylinder 3, whereas the non-stiffening section 4 uses the plate 6 to reinforce the core member. At the boundary between the non-stiffened section 4 and the stiffened section 5, the brace 1 as a whole is equal to or more than the yield axial force of the core 2 while preventing the additional bending from occurring in the core at the boundary between the stiffening section 4 and the stiffening section 5 It is possible to exert the compression proof stress.

【0019】〔別実施形態〕以下に他の実施の形態を説
明する。
[Another Embodiment] Another embodiment will be described below.

【0020】〈1〉 前記ブレース本体は、先の実施形
態で説明したH形鋼に限るものではなく、例えば、I形
鋼や、帯形鋼、山形鋼、及び、筒形鋼等であってもよ
く、更には、補剛区間と無補剛区間とのブレース本体の
強度差をつけるのに、無補剛区間の補強を図ることの他
に、ブレース本体全体の強度特性を向上させると共に、
補剛区間のブレース本体の有効断面を小さくして、ブレ
ース本体の降伏軸力以上の圧縮耐力を発揮させるように
構成することも可能である。また、ブレース本体は、図
3に示すように、補剛区間に降伏応力度の低い鋼材を用
いると共に、無補剛区間に降伏応力度の高い鋼材を用い
るような構成とすることも可能である。 〈2〉 前記補剛筒は、先の実施形態で説明した角筒形
状に限るものではなく、例えば、円筒形状であってもよ
い。 〈3〉 前記連結部材は、先の実施形態で説明したボル
トに限るものではなく、例えば、補剛筒からブレース本
体側へ出退自在に設けられた突出ピンであってもよく、
要するに、各分割筒部材3Aどうしを連結すると共に、
前記ブレース本体2への圧縮軸力の作用で生じる前記ブ
レース本体2の撓みを抑制するものであればよい。それ
らを総称して連結部材という。 〈4〉 また、連結部材は、先の実施形態で説明したよ
うに、撓み抑制部7が、芯材2のウェブ2aに当接する
ように設けてあるものに限らず、例えば、図4に示すよ
うに、フランジ2bに当接するように設けてあってもよ
い。更には、図5に示すように、前記連結部材とは別
に、ウェブ2aの撓みを抑制する抑制ボルトを、補剛筒
に設けてあってもよい。
<1> The brace body is not limited to the H-shaped steel described in the above embodiment, and may be, for example, an I-shaped steel, a band-shaped steel, an angled steel, a cylindrical steel, or the like. In addition, in addition to reinforcing the non-stiffened section, to improve the strength characteristics of the entire brace body, in addition to reinforcing the non-stiffened section, the strength difference of the brace body between the stiffened section and the non-stiffened section is improved.
It is also possible to reduce the effective cross section of the brace body in the stiffening section so as to exert a compressive strength equal to or higher than the yield axial force of the brace body. Further, as shown in FIG. 3, the brace body may be configured to use a steel material having a low yield stress in the stiffening section and use a steel material having a high yield stress in the non-stiffening section. <2> The stiffening tube is not limited to the rectangular tube shape described in the above embodiment, and may be, for example, a cylindrical shape. <3> The connecting member is not limited to the bolt described in the above embodiment, and may be, for example, a protruding pin provided to be able to move back and forth from the stiffening cylinder toward the brace body.
In short, while connecting each divided cylindrical member 3A,
What is necessary is just to suppress the bending of the brace body 2 caused by the action of the compressive axial force on the brace body 2. These are collectively called connection members. <4> Further, as described in the previous embodiment, the connection member is not limited to the one in which the deflection suppressing portion 7 is provided so as to be in contact with the web 2a of the core material 2, and for example, as shown in FIG. Thus, it may be provided so as to be in contact with the flange 2b. Further, as shown in FIG. 5, a stiffening cylinder may be provided with a restraining bolt for restraining deflection of the web 2a separately from the connecting member.

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

【図1】アンボンドブレースの取付状況を示す正面図FIG. 1 is a front view showing an attachment state of an unbonded brace.

【図2】(イ)アンボンドブレースの上面図 (ロ)アンボンドブレースの横断面図FIG. 2 (a) Top view of unbonded brace (b) Cross-sectional view of unbonded brace

【図3】別実施形態のアンボンドブレースの上面図FIG. 3 is a top view of an unbonded brace of another embodiment.

【図4】別実施形態のアンボンドブレースの横断面図FIG. 4 is a cross-sectional view of an unbonded brace of another embodiment.

【図5】別実施形態のアンボンドブレースの横断面図FIG. 5 is a cross-sectional view of an unbonded brace of another embodiment.

【図6】従来例の一つ目のアンボンドブレースを示す断
面図
FIG. 6 is a sectional view showing a first unbonded brace of a conventional example.

【図7】従来例の二つ目のアンボンドブレースを示す断
面図
FIG. 7 is a cross-sectional view showing a second unbonded brace of the conventional example.

【符号の説明】[Explanation of symbols]

2 ブレース本体 3 補剛筒 3A 分割筒部材 7 撓み抑制部 B 連結部材 2 Brace body 3 Stiffening cylinder 3A Divided cylinder member 7 Deflection suppressing part B Connecting member

───────────────────────────────────────────────────── フロントページの続き (72)発明者 佐々木 照夫 大阪府大阪市中央区本町四丁目1番13号 株式会社竹中工務店大阪本店内 (72)発明者 鴻野 良太 大阪府大阪市中央区本町四丁目1番13号 株式会社竹中工務店大阪本店内 (72)発明者 鈴木 直幹 大阪府大阪市中央区本町四丁目1番13号 株式会社竹中工務店大阪本店内 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Teruo Sasaki 4-1-1-13, Honcho, Chuo-ku, Osaka-shi, Osaka Inside the Takenaka Corporation Osaka Main Store No. 1-113, Takenaka Corporation Osaka Main Store (72) Inventor: Naoki Suzuki 4-1-1-13 Honcho, Chuo-ku, Osaka City, Osaka Inside Takenaka Corporation Osaka Main Store

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 軸力を負担するブレース本体を設け、前
記ブレース本体に被さる状態に座屈防止用補剛筒を設け
てあるアンボンドブレースであって、前記補剛筒を周方
向に分割構成とし、各分割筒部材どうしを連結する連結
部材を設け、前記連結部材に、前記ブレース本体への圧
縮軸力の作用で生じる前記ブレース本体の撓みを抑制す
る撓み抑制部を設けてあるアンボンドブレース。
1. An unbonded brace provided with a brace body that bears an axial force, and a buckling prevention stiffening tube provided over the brace body, wherein the stiffening tube is divided circumferentially. An unbonded brace, comprising: a connecting member for connecting the divided tubular members to each other; and the connecting member having a bending suppressing portion for suppressing bending of the brace body caused by the action of a compressive axial force on the brace body.
【請求項2】 前記撓み抑制部は、少なくとも一対設け
てあり、それら一対の撓み抑制部は、前記ブレース本体
に対する撓み抑制状態において、前記ブレース本体の表
裏面で対向する状態に構成してある請求項1に記載のア
ンボンドブレース。
2. The bending restraining portion is provided with at least one pair, and the pair of bending restraining portions are configured to be opposed to each other on the front and back surfaces of the brace body in a bending restraining state with respect to the brace body. Item 2. An unbonded brace according to item 1.
【請求項3】 前記ブレース本体は、H形鋼であり、前
記撓み抑制部は、前記座屈補剛筒に、前記H形鋼のウェ
ブに当接自在な状態に取り付けられたボルトである請求
項1又は2の何れかに記載のアンボンドブレース。
3. The brace body is an H-shaped steel, and the deflection suppressing portion is a bolt attached to the buckling stiffening cylinder so as to be in contact with the H-shaped steel web. Item 3. An unbonded brace according to any one of Items 1 or 2.
JP18795597A 1997-07-14 1997-07-14 Unbond brace Expired - Fee Related JP3601942B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18795597A JP3601942B2 (en) 1997-07-14 1997-07-14 Unbond brace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18795597A JP3601942B2 (en) 1997-07-14 1997-07-14 Unbond brace

Publications (2)

Publication Number Publication Date
JPH1129987A true JPH1129987A (en) 1999-02-02
JP3601942B2 JP3601942B2 (en) 2004-12-15

Family

ID=16215098

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18795597A Expired - Fee Related JP3601942B2 (en) 1997-07-14 1997-07-14 Unbond brace

Country Status (1)

Country Link
JP (1) JP3601942B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7174680B2 (en) 2002-05-29 2007-02-13 Sme Steel Contractors, Inc. Bearing brace apparatus
US7185462B1 (en) 2003-07-25 2007-03-06 Sme Steel Contractors, Inc. Double core brace
US7305799B2 (en) 2002-05-29 2007-12-11 Sme Steel Contractors, Inc. Bearing brace apparatus
KR101034459B1 (en) 2010-12-27 2011-05-12 김재환 Self-compacting aseismic reinforcement brace filled ultra-high strength slurry and brace system of constructure using the same
JP2019070237A (en) * 2017-10-06 2019-05-09 センクシア株式会社 Reinforcing structure of diagonal member, buckling preventing member of diagonal member, and reinforcing method for diagonal member

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7174680B2 (en) 2002-05-29 2007-02-13 Sme Steel Contractors, Inc. Bearing brace apparatus
US7305799B2 (en) 2002-05-29 2007-12-11 Sme Steel Contractors, Inc. Bearing brace apparatus
US7185462B1 (en) 2003-07-25 2007-03-06 Sme Steel Contractors, Inc. Double core brace
KR101034459B1 (en) 2010-12-27 2011-05-12 김재환 Self-compacting aseismic reinforcement brace filled ultra-high strength slurry and brace system of constructure using the same
JP2019070237A (en) * 2017-10-06 2019-05-09 センクシア株式会社 Reinforcing structure of diagonal member, buckling preventing member of diagonal member, and reinforcing method for diagonal member

Also Published As

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