JP2019100145A - Reinforcement - Google Patents

Reinforcement Download PDF

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JP2019100145A
JP2019100145A JP2017235133A JP2017235133A JP2019100145A JP 2019100145 A JP2019100145 A JP 2019100145A JP 2017235133 A JP2017235133 A JP 2017235133A JP 2017235133 A JP2017235133 A JP 2017235133A JP 2019100145 A JP2019100145 A JP 2019100145A
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concrete
reinforcing bar
reinforcement
peripheral surface
outer peripheral
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JP7075748B2 (en
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真一郎 大田
Shinichiro Ota
真一郎 大田
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Fujita Corp
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Fujita Corp
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Abstract

To provide a reinforcement which can achieve cost down of a structure by reducing weight of the structure and which is advantageous in lowering a ratio of space occupied by reinforced-concrete columns to a living space and an office space.SOLUTION: A reinforcement 10 includes a PCCP structure 14 which comprises a plurality of faces 1402 and which is formed on a whole area of an outer peripheral surface of a steel rod 12 with a uniform outer diameter. Thus, an outer peripheral surface portion of the reinforcement 10 is rigidly reinforced by the PCCP structure 14.SELECTED DRAWING: Figure 1

Description

本発明はコンクリート柱やコンクリート擁壁などのコンクリート構造体に埋設される鉄筋に関する。   The present invention relates to a reinforcing bar embedded in a concrete structure such as a concrete column or a concrete retaining wall.

コンクリート構造物において多くの場合、柱として鉄筋コンクリート柱が用いられている。
鉄筋コンクリート柱では、コンクリートの内部に柱主筋などの複数の鉄筋が用いられ、圧縮荷重をコンクリートで受け、引っ張り荷重および曲げ荷重を鉄筋で受けるようにしている。
そして、高層ビルでは、鉄筋コンクリート柱の本数も多くなることから、用いられる鉄筋の本数も数百本単位で多くなる。
In concrete structures, reinforced concrete columns are often used as columns.
In reinforced concrete columns, a plurality of reinforcing bars such as column main bars are used inside the concrete, and a compressive load is received by the concrete, and a tensile load and a bending load are received by the reinforcing bars.
And in a high-rise building, since the number of reinforced concrete columns also increases, the number of reinforcing bars used also increases by several hundreds.

特開2010−196347号公報Unexamined-Japanese-Patent No. 2010-196347

一方、鉄筋は、断面が円形でその表面は円筒面で形成されている。
そのため、鉄筋が耐えられる引っ張り荷重および曲げ荷重にも限界があり、鉄筋には所定の断面積が必要となり、鉄筋コンクリート柱の断面も大きくならざるを得ない。
その結果、鉄筋の総重量が大きくなると共に、使用されるコンクリートの総重量も大きくなり、それにより構造物の重量が大きくなり、その結果、基礎や地震対策構造なども大型化せざるを得ないため、構造物のコストが上昇し、また、居住スペースやオフィススペースに対して鉄筋コンクリート柱が占めるスペースの割合が多くならざるを得ないのが現状である。
また、従来の鉄筋形状では圧縮力には弱いという問題点が存在している。
本発明はこのような事情に鑑みなされたものであり、その目的は、構造物の重量を軽減して構造物のコストダウンを図れ、また、居住スペースやオフィススペースに対して鉄筋コンクリート柱が占めるスペースの割合を小さくする上で有利かつ圧縮力にも優れた鉄筋を提供することにある。
On the other hand, the reinforcing bar has a circular cross section and its surface is formed by a cylindrical surface.
Therefore, there is a limit to the tensile load and bending load that can be resisted by the rebar, the rebar needs to have a predetermined cross-sectional area, and the cross-section of the reinforced concrete column must be increased.
As a result, as the total weight of the reinforcing steel increases, the total weight of the concrete used also increases, which causes the weight of the structure to increase, and as a result, the foundation and the earthquake countermeasure structure etc. can not but be enlarged. As a result, the cost of the structure rises, and the ratio of space occupied by reinforced concrete columns to living space and office space can not but increase.
Moreover, in the conventional rebar shape, the problem that it is weak in compressive force exists.
The present invention has been made in view of such circumstances, and the object thereof is to reduce the weight of the structure and to reduce the cost of the structure, and to occupy the space occupied by the reinforced concrete column with respect to the living space and the office space. It is to provide a reinforcing bar which is advantageous in reducing the proportion of and which is also excellent in compression force.

上述の目的を達成するため、本発明はコンクリート構造体に埋設される鉄筋であって、前記鉄筋は、均一外径の鋼棒の外周面の全域に複数の面からなるPCCP構造が形成されて構成されていることを特徴とする。   In order to achieve the above object, the present invention is a reinforcing bar embedded in a concrete structure, wherein the reinforcing bar is formed with a PCCP structure consisting of a plurality of faces all over the outer peripheral surface of a steel rod of uniform outer diameter. It is characterized in that it is configured.

本発明によれば、鉄筋の外周面部分はPCCP構造により強固に補強されており、同じ断面積の円筒面のみからなる鉄筋に比べ、より大きな引っ張り荷重および曲げ荷重に耐えることが可能となり、圧縮力に対しても耐えることが可能となる。
したがって、従来の鉄筋に代えて断面積の小さい鉄筋を使用できる。
例えば、鉄筋コンクリート柱を大量に使用する高層ビルにおいては構造物の重量を軽減でき、その結果、基礎や地震対策構造などの小型化、簡易化を図れ、構造物のコストを削減する上で有利となる。
また、鉄筋の断面積を小さくできることから、鉄筋コンクリート柱の断面積を小さくでき、居住スペースやオフィススペースを大きく確保する上で有利となる。
According to the present invention, the outer peripheral surface portion of the reinforcing bar is strongly reinforced by the PCCP structure, and can withstand a larger tensile load and bending load as compared to a reinforcing bar consisting only of cylindrical surfaces of the same cross-sectional area It is possible to withstand the force.
Therefore, in place of conventional rebars, rebars of small cross section can be used.
For example, in a high-rise building that uses a large amount of reinforced concrete columns, the weight of the structure can be reduced. As a result, downsizing and simplification of the foundation and earthquake control structure can be achieved, which is advantageous in reducing the cost of the structure. Become.
In addition, since the cross-sectional area of the reinforcing bar can be reduced, the cross-sectional area of the reinforced concrete column can be reduced, which is advantageous in securing a large living space and office space.

実施の形態の鉄筋の正面図である。It is a front view of the reinforcing bar of embodiment.

(第1の実施の形態)
次に本発明の実施の形態について図面を参照して説明する。
鉄筋10は、コンクリート柱やコンクリート擁壁などのコンクリート構造体に埋設されて使用されるものである。
鉄筋10は、均一外径の鋼棒12の外周面の全域に複数の面1402からなるPCCP構造14が形成されて構成されている。
First Embodiment
Next, embodiments of the present invention will be described with reference to the drawings.
The reinforcing bars 10 are used by being buried in a concrete structure such as a concrete column or a concrete retaining wall.
The reinforcing bar 10 is configured by forming a PCCP structure 14 including a plurality of surfaces 1402 on the entire outer peripheral surface of the steel rod 12 having a uniform outer diameter.

本実施の形態の鉄筋10によれば、鉄筋10の外周面の全域は、複数の面1402からなるPCCP構造14で構成されている。
そのため、鉄筋10の外周面部分はPCCP構造14により強固に補強されており、同じ断面積の円筒面のみからなる鉄筋に比べ、より大きな引っ張り荷重および曲げ荷重に耐えることが可能となり、圧縮力に対しても耐えることが可能となる。
したがって、従来の鉄筋に代えて断面積の小さい鉄筋10を使用できる。
したがって、例えば、鉄筋コンクリート柱を大量に使用する高層ビルにおいては構造物の重量を軽減でき、その結果、基礎や地震対策構造などの小型化、簡易化を図れ、構造物のコストを削減する上で有利となる。
また、鉄筋10の断面積を小さくできることから、鉄筋コンクリート柱の断面積を小さくでき、居住スペースやオフィススペースに対して鉄筋コンクリート柱が占めるスペースの割合を小さくでき、居住スペースやオフィススペースを大きく確保する上で有利となる。
According to the reinforcing bar 10 of the present embodiment, the entire area of the outer peripheral surface of the reinforcing bar 10 is configured by the PCCP structure 14 including the plurality of surfaces 1402.
Therefore, the outer peripheral surface portion of the reinforcing bar 10 is strongly reinforced by the PCCP structure 14 and can withstand a larger tensile load and bending load as compared to a reinforcing bar consisting of only cylindrical surfaces of the same cross-sectional area It is possible to endure against.
Therefore, in place of the conventional rebar, a rebar 10 with a small cross-sectional area can be used.
Therefore, for example, in a high-rise building using a large amount of reinforced concrete columns, the weight of the structure can be reduced, and as a result, the size and simplification of the foundation and earthquake countermeasure structure can be achieved, and the cost of the structure can be reduced. It is advantageous.
In addition, since the cross-sectional area of the reinforcing bar 10 can be reduced, the cross-sectional area of the reinforced concrete column can be reduced, the ratio of the space occupied by the reinforced concrete column to the living space or office space can be reduced, and a large living space or office space can be secured. Be advantageous.

なお、本発明において鉄筋は均一外径の鋼棒12の外周面の全域に複数の面1402からなるPCCP構造14が形成されて構成されているとは、鋼棒12の両端を、鋼棒12を構成する円筒面で残し、その両端の円筒面を除いた残りの箇所に複数の面1402からなるPCCP構造14が形成されて構成されている態様を含む。
また、本実施の形態では、コンクリート構造体がコンクリート柱である場合について説明したが、コンクリート構造体はコンクリート擁壁など従来公知の様々なコンクリート構造体に適用可能であり、本発明の鉄筋10はコンクリート柱に限定されない。
In the present invention, in the present invention, the steel bar 12 is formed by forming the PCCP structure 14 consisting of a plurality of surfaces 1402 all over the outer peripheral surface of the steel rod 12 with uniform outer diameter. The present invention includes an aspect in which a PCCP structure 14 formed of a plurality of surfaces 1402 is formed by leaving the cylindrical surface constituting the and leaving the cylindrical surfaces at both ends thereof.
Moreover, although this embodiment demonstrated the case where a concrete structure was a concrete pillar, a concrete structure is applicable to conventionally well-known various concrete structures, such as a concrete retaining wall, and the reinforcement 10 of this invention is It is not limited to concrete pillars.

10 鉄筋
12 鋼棒
14 PCCP構造
1402 面
10 rebar 12 steel bar 14 PCCP structure 1402 plane

Claims (1)

コンクリート構造体に埋設される鉄筋であって、
前記鉄筋は、均一外径の鋼棒の外周面の全域に複数の面からなるPCCP構造が形成されて構成されている、
ことを特徴とする鉄筋。
Rebar embedded in concrete structure,
The reinforcing bar is formed by forming a PCCP structure consisting of a plurality of faces over the entire outer peripheral surface of a steel rod with a uniform outer diameter.
Rebar characterized by.
JP2017235133A 2017-12-07 2017-12-07 Reinforcing bar Active JP7075748B2 (en)

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JP7075748B2 JP7075748B2 (en) 2022-05-26

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4791772A (en) * 1987-05-01 1988-12-20 Potucek Frank R Concrete reinforcing bar support
JP2000000334A (en) * 1998-06-15 2000-01-07 Mizuno Corp Golf club shaft
JP2013199830A (en) * 2013-06-03 2013-10-03 Jfe Steel Corp Deformed reinforcing bar
JP2014108691A (en) * 2012-11-30 2014-06-12 Mitsubishi Heavy Ind Ltd Suspension device
JP2016132969A (en) * 2015-01-22 2016-07-25 住友電気工業株式会社 Irregular shape bar steel
KR20160126549A (en) * 2015-04-24 2016-11-02 하종만 Uneven rebar with bond strenth increase and bending strenth increase

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004116084A (en) 2002-09-25 2004-04-15 Ibiden Greentec Co Ltd Reinforced concrete structure
JP5654725B2 (en) 2007-11-22 2015-01-14 大成建設株式会社 Shear reinforcement member

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4791772A (en) * 1987-05-01 1988-12-20 Potucek Frank R Concrete reinforcing bar support
JP2000000334A (en) * 1998-06-15 2000-01-07 Mizuno Corp Golf club shaft
JP2014108691A (en) * 2012-11-30 2014-06-12 Mitsubishi Heavy Ind Ltd Suspension device
JP2013199830A (en) * 2013-06-03 2013-10-03 Jfe Steel Corp Deformed reinforcing bar
JP2016132969A (en) * 2015-01-22 2016-07-25 住友電気工業株式会社 Irregular shape bar steel
KR20160126549A (en) * 2015-04-24 2016-11-02 하종만 Uneven rebar with bond strenth increase and bending strenth increase

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