JPH035552A - Reinforcing structure for member using high strength steel frame - Google Patents
Reinforcing structure for member using high strength steel frameInfo
- Publication number
- JPH035552A JPH035552A JP13850189A JP13850189A JPH035552A JP H035552 A JPH035552 A JP H035552A JP 13850189 A JP13850189 A JP 13850189A JP 13850189 A JP13850189 A JP 13850189A JP H035552 A JPH035552 A JP H035552A
- Authority
- JP
- Japan
- Prior art keywords
- steel
- steel frame
- strength
- frame
- reinforcing
- 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
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 60
- 239000010959 steel Substances 0.000 title claims abstract description 60
- 230000003014 reinforcing effect Effects 0.000 title claims description 23
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 13
- 238000003466 welding Methods 0.000 claims description 2
- 239000002131 composite material Substances 0.000 abstract description 4
- 238000004880 explosion Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 2
- 239000012779 reinforcing material Substances 0.000 abstract 2
- 230000009172 bursting Effects 0.000 abstract 1
- 239000004567 concrete Substances 0.000 description 19
- 230000002787 reinforcement Effects 0.000 description 13
- 239000000463 material Substances 0.000 description 8
- 238000010276 construction Methods 0.000 description 4
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000009415 formwork Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000000452 restraining effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011372 high-strength concrete Substances 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Landscapes
- Rod-Shaped Construction Members (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、高強度鉄骨を使用した部材の補強構造に係り
、とくに、柱、梁等の構造体が高強度鉄骨を使用した鉄
骨鉄筋コンクリートで形成されているときの部材の補強
構造に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a reinforcement structure for members using high-strength steel frames, and in particular, structures such as columns and beams are made of steel reinforced concrete using high-strength steel frames. It relates to a reinforcing structure of a member when it is being formed.
［従来の技術］
建築物、土木構築物等の大型の構造体は、通常、鉄骨鉄
筋コンクリート造で形成されることが多い。[Prior Art] Large structures such as buildings and civil engineering structures are usually made of steel reinforced concrete.
第２図の水平断面図によって説明すれば、図において、
１は鉄骨鉄筋コンクリート造の柱であって、幅ａを桁行
方向にとり、成りを梁間方向とする側柱の例が示されて
おり、従って、断面丁字形の鉄骨２を主材としている。To explain using the horizontal sectional view of FIG. 2, in the figure,
1 is a column made of steel-framed reinforced concrete, and an example of a side column is shown in which the width a is in the column direction and the width is in the inter-beam direction, and therefore the main material is a steel frame 2 with a T-shaped cross section.
３は主筋の鉄筋、４はフープ筋、５はコンクリート部分
、６は鉄骨２の外側に位置するフランジ２１と、フープ
筋４との間で、これらの鋼材によって囲まれているコン
クリートの拘束部分である。3 is the reinforcement of the main reinforcement, 4 is the hoop reinforcement, 5 is the concrete part, and 6 is the restraint part of the concrete surrounded by these steel materials between the flange 21 located outside the steel frame 2 and the hoop reinforcement 4. be.
一方、鉄骨鉄筋コンクリート造の部材の断面設計では、
鉄骨と鉄筋とコンクリートの複合構造材を形成すること
から、その有効な断面係数が得られるように、鋼材を外
周部に配し、コンクリートはその圧縮時の補強と耐火被
覆とを兼ねるようにしている。従って、建築物の有効空
間を確保するためには、各素材の強度を上昇させるよう
にし、鉄骨としては、高強度鉄骨を採用し、コンクリー
トにも、高圧縮強度のものを使用するのが有利であり、
鉄骨としては抗張力強度が６０ｋｇ／ａｄ以上のものが
使用されるようになってきている。On the other hand, in the cross-sectional design of steel-framed reinforced concrete members,
Since a composite structure of steel frames, reinforcing bars, and concrete is formed, steel is placed around the outer periphery to obtain an effective section modulus, and the concrete serves both as reinforcement during compression and as a fireproof covering. There is. Therefore, in order to secure effective space in buildings, it is advantageous to increase the strength of each material, to use high-strength steel frames, and to use concrete with high compressive strength. and
Steel frames with a tensile strength of 60 kg/ad or more are increasingly being used.
［発明が解決しようとする課題］
第２図に示すような構造体では、鉄骨２の外側に位置す
るフランジ２１と、フープ筋４との間で、これらの鋼材
によって囲まれているコンクリートの拘束部分６自体は
、一般に無筋状態であることから、柱１の大きな応力の
もとでは、鉄骨２に対する拘束力が比較的弱い。従って
、フランジ２１との間に剥離が生じやすく、弱点となる
から、この部分に、設計強度の低減係数を勘案しなけれ
ばならない。また、耐火性能においては、この部分は、
一般の耐火被覆と共に、火災時の急激な膨張によって、
コンクリートの爆裂を生起させる危険性が高く、一般に
、コンクリートが高強度になればなるほど爆裂の勢いが
激しいから、耐火被覆の機能をも失いがちであり、高強
度鉄骨を使用する部材の有利性が減殺されてしまう。[Problems to be Solved by the Invention] In a structure as shown in FIG. 2, between the flange 21 located on the outside of the steel frame 2 and the hoop reinforcement 4, the concrete surrounded by these steel members is restrained. Since the portion 6 itself is generally unreinforced, the restraining force on the steel frame 2 is relatively weak under the large stress of the column 1. Therefore, separation from the flange 21 is likely to occur, resulting in a weak point, so a reduction factor for the design strength must be taken into consideration for this portion. In addition, in terms of fire resistance, this part is
Along with general fireproof coating, due to rapid expansion during a fire,
There is a high risk of causing concrete to explode, and in general, the stronger the concrete, the more forceful the explosion will be, so the function of fireproof coating tends to be lost, so the advantage of members using high-strength steel frames is You will be killed.
［課題を解決するための手段］
本発明は、上記のような欠点を一掃し、その合理化を課
題として創案されたものであって、高強度鉄骨を使用し
た鉄骨鉄筋コンクリート部材の構造において、部材の鉄
骨の外方の側縁と外周の補強鉄筋とで囲まれた範囲に、
１１材で形成した格子。[Means for Solving the Problems] The present invention was created with the aim of eliminating the above-mentioned drawbacks and rationalizing them. In the area surrounded by the outer side edge of the steel frame and the reinforcing bars on the outer periphery,
A lattice made of 11 materials.
体を固着させたことを特徴とする高強度鉄骨を使用した
部材の補強構造を提供することを目的とするものである
。The object of the present invention is to provide a reinforcement structure for a member using a high-strength steel frame, which is characterized by a fixed body.
本発明によれば、高強度鉄骨を使用した部材にあっても
、鉄骨の外方におけるコンクリートの拘束部分が補強さ
れ、部材全体として一体に機能する強度が増強されて、
構造設計を有利に合理化する目的が達成される。According to the present invention, even in a member using a high-strength steel frame, the restraining part of the concrete outside the steel frame is reinforced, and the strength of the member as a whole to function as one is enhanced.
The objective of advantageously rationalizing the structural design is achieved.
［実施例コ
本発明の高強度鉄骨を使用した部材の補強構造を、実施
例を示す図面に基づいて詳細に説明する。[Example] A reinforcing structure for a member using a high-strength steel frame according to the present invention will be explained in detail based on drawings showing examples.
第１図は１本発明を鉄骨鉄筋コンクリート造の柱に採用
した場合を示す水平断面図であって、第２図の参照番号
は該当部分について共通にしである。FIG. 1 is a horizontal sectional view showing the case where the present invention is applied to a steel-framed reinforced concrete column, and the reference numbers in FIG. 2 are the same for the corresponding parts.
図において、１は柱、２は丁字形に形成した鉄骨、３は
主として柱１の隅角部に配置された主筋の鉄筋、４はフ
ープ筋、５は柱１のコンクリート部分、６はコンクリー
トの拘束部分である。In the figure, 1 is a column, 2 is a steel frame formed in a T-shape, 3 is a main reinforcement mainly placed at the corner of column 1, 4 is a hoop reinforcement, 5 is a concrete part of column 1, and 6 is a concrete part. This is the constraint part.
本発明では、柱１の鉄骨２の外方に位置するコンクリー
トの拘束部分６の範囲を囲むように、補強体１０が配し
である。この補強体１０は、鋼線ないしは細い鉄筋１１
を、溶接、によって１０ａ１１程度の格子状に組付けた
ものであり、鉄骨２のフランジ２１の外側を囲むように
、柱１の内部に向けて、断面をコ字状に折曲形成しであ
る。その柱１に沿う方向の長さは、その一部の長さまた
は全長に連続した長さにしである。そして、この補強体
１０は、適宜にフランジ２１とフープ４とを利用して固
着する。In the present invention, the reinforcing body 10 is arranged so as to surround the range of the concrete restraint part 6 located outside the steel frame 2 of the column 1. This reinforcing body 10 is made of steel wire or thin reinforcing bar 11.
are assembled by welding into a lattice shape of about 10x11, and the cross section is bent into a U-shape toward the inside of the column 1 so as to surround the outside of the flange 21 of the steel frame 2. . The length in the direction along the pillar 1 is continuous with a part of the length or the entire length. This reinforcing body 10 is fixed using the flanges 21 and hoops 4 as appropriate.
その他１本発明の補強構造は上記の実施例に限定されな
いことはもちろんであって、例えば、対象とする部材と
しての柱は側柱に限らず、中柱に採用して鉄骨を十字形
にしたものでもよく、当然、梁に採用してもよい、また
、補強体１０には、ウェルドメツシュ、亀甲網等を使用
することができ、その網目の寸法も変更することができ
る。Other 1 It goes without saying that the reinforcing structure of the present invention is not limited to the above-mentioned embodiments, and for example, the pillars as target members are not limited to the side pillars, but are adopted as middle pillars to make the steel frame cross-shaped. Of course, the reinforcing body 10 may be made of a welded mesh, a hexagonal mesh, or the like, and the dimensions of the mesh may be changed.
［作 用］
本発明の高強度鉄骨を使用した部材の補強構造の作用を
、その施工方法に基づいて説明する。[Function] The function of the reinforcement structure for members using the high-strength steel frame of the present invention will be explained based on its construction method.
柱１では鉄骨２が先行して建方され、平行して鉄筋３．
フープ筋４が常法によって組み立てられる。このとき、
あらかじめ組立てて形成した補強体１０を、鉄骨２のフ
ランジ２１とフープ筋４とに係着させながら、フランジ
２１の外周を囲むように装着し、これらの鋼材に固定す
る。ついで、通常の工法によって、コンクリート型枠７
を建てこみ、部材のコンクリート５を打設する。In column 1, steel frame 2 is erected in advance, and reinforcing bar 3 is erected in parallel.
The hoop muscle 4 is assembled in a conventional manner. At this time,
A reinforcing body 10 that has been assembled in advance is attached to the flange 21 of the steel frame 2 and the hoop reinforcement 4 so as to surround the outer periphery of the flange 21, and is fixed to these steel members. Next, concrete formwork 7 is constructed using normal construction methods.
erected and poured concrete 5, which is the member.
このように構成される本発明の補強構造の作用は、補強
体１０がコンクリートの拘束部分６に対して、鉄骨２や
フープ４に連繋して十分な補強鋼材となると共に、拘束
部分６の全周を囲んでコンクリートを拘束しているから
、部材の主鋼材として高強度鉄骨を採用しても、その強
度に対応して、部材が複合材料としての強度を有するよ
うになる。The function of the reinforcing structure of the present invention constructed as described above is such that the reinforcing body 10 connects to the steel frame 2 and the hoop 4 to serve as a sufficient reinforcing steel material for the concrete restraint part 6, and also serves as a sufficient reinforcing steel for the restraint part 6 of the concrete. Since the concrete is restrained by surrounding it, even if a high-strength steel frame is used as the main steel material of the member, the member will have the strength of a composite material corresponding to the strength of the high-strength steel frame.
しかも、爆裂の惧れがなく、部材が耐火構造として機能
して、安全性が確保される。Furthermore, there is no risk of explosion, and the members function as a fireproof structure, ensuring safety.
このことは、鉄骨鉄筋コンクリート造の部材において、
有利な高強度鉄骨を採用できるようになるだけでなく、
併せて超高強度コンクリートを併用することも可能に−
なり、しかも、耐火構造としても著しい改善がもたらさ
れる。This means that for steel-framed reinforced concrete members,
Not only will it be possible to use advantageous high-strength steel frames,
At the same time, it is also possible to use ultra-high strength concrete.
Furthermore, the fireproof structure is also significantly improved.
［発明の効果コ
本発明は、高強度鉄骨を使用した鉄骨鉄筋コンクリート
部材の構造において、部材の鉄骨の外方の側縁と外周の
補強鉄筋とで囲まれた範囲に、鋼材で形成した格子体を
固着させたものであるから、鉄骨鉄筋コンクリート造の
部材に高強度鉄骨を使用する場合に、部材の弱点となる
拘束部分が増強されるので、鋼材とコンクリートとの複
合材料としての鉄骨鉄筋コンクリートの部材が、高強度
鉄骨の採用に対応して、均衡して構造強度が改良された
強度を有するようになり、従来技術のように低減係数を
考慮する必要がない。しかも、爆裂の慣れを防止し、部
材の耐火構造として機能は万全であり、安全性が確保さ
れる。[Effects of the Invention] The present invention provides, in the structure of a steel-framed reinforced concrete member using a high-strength steel frame, a lattice body formed of steel material in an area surrounded by the outer side edge of the steel frame of the member and reinforcing reinforcing bars on the outer periphery. Therefore, when using high-strength steel frames for steel-framed reinforced concrete construction members, the constraint area that is the weak point of the member is strengthened, so steel-framed reinforced concrete members are used as a composite material of steel and concrete. However, in response to the adoption of high-strength steel frames, the structural strength has been balanced and improved, and there is no need to consider reduction factors as in the prior art. In addition, it prevents explosions from occurring and functions perfectly as a fireproof structure of the member, ensuring safety.
また１本発明がとくに装着して使用する補強体は１通常
の鋼材を使用して形成され、鉄骨、鉄筋等の組立に平行
して容易に配置されるものであるから、別種の工程を要
しないだけでなく、各種の構造体の構成に対して、対応
性や選択範囲が広く、対象部材に限定がない。In addition, the reinforcing bodies that are particularly attached and used in the present invention are formed using ordinary steel materials and are easily placed in parallel with the assembly of steel frames, reinforcing bars, etc., so they require a different type of process. Not only does it not work, but it also has a wide range of compatibility and selection with respect to the configuration of various structures, and there are no restrictions on the target members.
従って、本発明は、各種の鉄骨鉄筋コンクリート造の部
材に適用して強度上の課題を解決することができ、建設
業界に対する貢献が極めて大きい。Therefore, the present invention can be applied to various steel-framed reinforced concrete members to solve strength problems, making an extremely large contribution to the construction industry.
図面は本発明の高強度鉄骨を使用した部材の補強構造を
実施例に基づいて説明するものであり、第１図は本発明
を鉄骨鉄筋コンクリート造の柱に採用した例によって示
す水平断面図、第２図は従来技術を説明する柱の水平断
面図である。
１・・・柱、２・・・鉄骨、３・・・鉄筋、４・・・フ
ープ、５・・コンクリート、６・・・拘束部分、７・・
・型枠、１゜・・・補強体、１１・・・鋼線、２１・・
・フランジ。The drawings are for explaining the reinforcing structure of members using high-strength steel frames according to the present invention based on examples. FIG. 2 is a horizontal sectional view of a column to explain the prior art. 1... Column, 2... Steel frame, 3... Rebar, 4... Hoop, 5... Concrete, 6... Restraint part, 7...
・Formwork, 1°...Reinforcement body, 11...Steel wire, 21...
・Flange.
Claims (2)
の構造において、部材の鉄骨の外方の側縁と外周の補強
鉄筋とで囲まれた範囲に、鋼材で形成した格子体を固着
させたことを特徴とする高強度鉄骨を使用した部材の補
強構造。(1) In the structure of a steel-framed reinforced concrete member using a high-strength steel frame, a grid made of steel is fixed to the area surrounded by the outer side edge of the steel frame of the member and the reinforcing reinforcing bars on the outer periphery. Features a reinforced structure of members using high-strength steel frames.
部または全長にわたって固着されていることを特徴とす
る請求項１記載の高強度鉄骨を使用した部材の補強構造
。(2) A reinforcing structure for a member using a high-strength steel frame according to claim 1, wherein the grid body is formed by welding steel wires and is fixed over part or the entire length of the member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1138501A JP2548614B2 (en) | 1989-05-31 | 1989-05-31 | Reinforcement structure of member using high strength steel frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1138501A JP2548614B2 (en) | 1989-05-31 | 1989-05-31 | Reinforcement structure of member using high strength steel frame |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH035552A true JPH035552A (en) | 1991-01-11 |
| JP2548614B2 JP2548614B2 (en) | 1996-10-30 |
Family
ID=15223599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1138501A Expired - Lifetime JP2548614B2 (en) | 1989-05-31 | 1989-05-31 | Reinforcement structure of member using high strength steel frame |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2548614B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104481165A (en) * | 2014-12-09 | 2015-04-01 | 卜良桃 | Pressurizing and fixing device and reinforcing method for adhered steel plate of reinforced concrete beam |
| CN105113710A (en) * | 2015-08-03 | 2015-12-02 | 吴朝霞 | Concrete member for high-rise building |
-
1989
- 1989-05-31 JP JP1138501A patent/JP2548614B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104481165A (en) * | 2014-12-09 | 2015-04-01 | 卜良桃 | Pressurizing and fixing device and reinforcing method for adhered steel plate of reinforced concrete beam |
| CN104481165B (en) * | 2014-12-09 | 2017-03-15 | 卜良桃 | Reinforced beam affixing steel plate pressurization fixing device and reinforcement means |
| CN105113710A (en) * | 2015-08-03 | 2015-12-02 | 吴朝霞 | Concrete member for high-rise building |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2548614B2 (en) | 1996-10-30 |
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