JP2003336315A - Reinforced concrete beam structure - Google Patents
Reinforced concrete beam structureInfo
- Publication number
- JP2003336315A JP2003336315A JP2002149072A JP2002149072A JP2003336315A JP 2003336315 A JP2003336315 A JP 2003336315A JP 2002149072 A JP2002149072 A JP 2002149072A JP 2002149072 A JP2002149072 A JP 2002149072A JP 2003336315 A JP2003336315 A JP 2003336315A
- Authority
- JP
- Japan
- Prior art keywords
- reinforced concrete
- concrete beam
- reinforcing bar
- adhesion
- diagonal
- 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
Landscapes
- Rod-Shaped Construction Members (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、鉄筋コンクリート
梁の内部に、その対角線方向にＸ字状に交差するように
配置された斜鉄筋を備える鉄筋コンクリート梁の構造に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a reinforced concrete beam having diagonal reinforcing bars arranged inside the reinforced concrete beam so as to intersect in a diagonal direction with an X shape.
【０００２】[0002]
【従来の技術】一般に、スパンの短い鉄筋コンクリート
梁は、スパンの長い梁に比較して大きなせん断力がかか
るため、変形性能が劣る。梁に軸方向筋とあばら筋とを
格子状に配筋する通常の鉄筋コンクリート梁で、スパン
と梁成の比が３．０程度以下の短スパンの梁を構築する
と、この鉄筋コンクリート梁に必要な靱性能を十分に確
保することが難しい。2. Description of the Related Art Generally, a reinforced concrete beam having a short span is subjected to a large shearing force as compared with a beam having a long span, and therefore has a poor deformability. If a short-span beam with a span-to-beam ratio of about 3.0 or less is constructed with a normal reinforced concrete beam in which axial and stirrup bars are arranged in a grid pattern, the toughness required for this reinforced concrete beam It is difficult to secure sufficient Noh performance.
【０００３】そこで、近年、鉄筋コンクリート梁の軸方
向筋の一部または全てを、梁材の縦断面内で対角線方向
に配置した「Ｘ型配筋梁」が用いられている。このＸ型
配筋梁では、地震時に梁に生じる応力を片側のＸ型主筋
の引張強度とコンクリート圧縮束の圧縮強度が負担する
耐力機構となっている。このため、Ｘ型配筋の主筋はス
パン全長で引張応力状態となり、主筋の許容できる伸び
量は主筋を平行に配筋する一般の梁に比較して各段に大
きくなり、梁としての変形能力も非常に大きくなる。Therefore, in recent years, an "X-shaped bar arrangement beam" has been used in which some or all of the axial reinforcements of a reinforced concrete beam are diagonally arranged within the longitudinal section of the beam material. In this X-shaped bar, the tensile strength of the X-shaped main bar on one side and the compressive strength of the concrete compression bundle bear the stress generated in the beam during an earthquake. For this reason, the main bar of the X-shaped bar is in a tensile stress state over the entire span, and the allowable amount of elongation of the main bar is larger at each step than that of a general beam in which the main bar is arranged in parallel, and the deformability as a beam is large. Will also be very large.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、従来の
Ｘ型配筋の鉄筋コンクリート造梁においては、主筋とコ
ンクリートとが付着力により一体となっているため、主
筋が伸びるとこの主筋の周囲のコンクリートにも引張力
が伝わり、コンクリートには主筋と直角方向にひび割れ
が発生する。However, in the conventional X-shaped reinforcing bar reinforced concrete beam, since the main bar and the concrete are integrated by the adhesive force, when the main bar extends, the concrete around the main bar is reinforced. The tensile force is also transmitted to the concrete, causing cracks in the concrete in the direction perpendicular to the main bars.
【０００５】地震時には、鉄筋コンクリート梁に正負繰
り返しの曲げせん断力が作用すると、このひび割れが上
下のＸ型配筋の主筋に沿って各々発生するため、亀甲状
のひび割れとなる。このひび割れによりコンクリートは
小さなブロックに分割され、コンクリート圧縮束の有効
耐力が低下するという問題があった。これらのひび割れ
は、主筋に伸びが生じると直ぐに発生し始めるため、比
較的小さな地震でも発生する。また、梁にひびわれが発
生すると、建物の美観を損なうという問題もあった。When a positive and negative repeated bending shear force is applied to a reinforced concrete beam during an earthquake, these cracks are generated along the main bars of the upper and lower X-shaped bar arrangements, resulting in a hexagonal crack. Due to this crack, the concrete is divided into small blocks, and there is a problem that the effective yield strength of the concrete compression bundle is reduced. These cracks begin to occur as soon as the main bar stretches, so they occur even in relatively small earthquakes. In addition, when the beam is cracked, the aesthetic appearance of the building is impaired.
【０００６】本発明の課題は、鉄筋コンクリート梁に曲
げせん断力がかかる時に、梁の材軸方向途上におけるひ
び割れを抑えるとともに、ひび割れの補修作業を簡略化
できる、鉄筋コンクリート梁を提供することである。An object of the present invention is to provide a reinforced concrete beam which can suppress cracks in the beam axial direction of the reinforced concrete beam when bending and shearing force is applied to the reinforced concrete beam and can simplify repair work of the cracks.
【０００７】[0007]
【課題を解決するための手段】請求項１に記載の発明
は、例えば図１に示すように、鉄筋コンクリート梁１の
内部に、その対角線方向にＸ字状に交差するように配置
された斜鉄筋１１を備える鉄筋コンクリート梁の構造に
おいて、前記斜鉄筋１１の、前記鉄筋コンクリート梁１
の側方に取り付くコンクリート柱２内の定着部１１ａに
は、前記鉄筋コンクリート梁１の端から前記コンクリー
ト２柱の内部方向に、所定長さ１２Ｌにわたって、この
斜鉄筋１１とコンクリート１０との付着を絶つ付着防止
手段１２が設けられていることを特徴とする。ここで、
コンクリート柱とは、鉄筋コンクリート柱、鉄骨鉄筋コ
ンクリート柱など、コンクリート系構造からなる柱を指
す。また、上記付着防止手段としては、金属、ゴム、樹
脂などからなるチューブや、柔軟性のあるゴムや樹脂な
どからなるテープなどを用いることができる。チューブ
を用いる場合には、その軸方向に半分に割ったものを組
み合わせて、斜鉄筋を被覆することも可能である。ま
た、上記所定長さは、斜鉄筋の径の３倍〜５倍程度であ
ることが好ましい。The invention according to claim 1 is, for example, as shown in FIG. 1, a diagonal reinforcing bar arranged inside a reinforced concrete beam 1 so as to intersect in a diagonal direction with an X shape. In the structure of a reinforced concrete beam including 11, the reinforced concrete beam 1 of the oblique reinforcing bar 11
In the anchoring portion 11a in the concrete pillar 2 attached to the side of the concrete pillar 2, the oblique reinforcing bar 11 and the concrete 10 are cut off from the end of the reinforced concrete beam 1 toward the inside of the concrete 2 pillar for a predetermined length 12L. It is characterized in that the adhesion preventing means 12 is provided. here,
Concrete columns refer to columns having a concrete structure, such as reinforced concrete columns and steel-framed reinforced concrete columns. As the adhesion preventing means, a tube made of metal, rubber, resin or the like, a tape made of flexible rubber or resin, or the like can be used. When a tube is used, it is also possible to cover the diagonal reinforcing bars by combining the tubes divided in half in the axial direction. The predetermined length is preferably about 3 to 5 times the diameter of the diagonal reinforcing bar.
【０００８】請求項１に記載の発明によれば、鉄筋コン
クリート梁の斜鉄筋の定着部に、鉄筋コンクリート梁の
端から前記コンクリート柱の内部方向に、所定長さにわ
たって、この斜鉄筋とコンクリートとの付着を絶つ付着
防止手段が設けられているので、この付着防止手段の内
部において斜鉄筋の軸方向変形が集中する。これは、斜
鉄筋の付着防止手段が設けられた部位においては、斜鉄
筋のコンクリートとの付着が絶たれてコンクリートと一
体化しないため、コンクリートとの付着がある部位に比
して、鉄筋コンクリートの剛性が低下するためである。
したがって、付着防止手段が設けられていない場合に比
して、鉄筋コンクリート梁１に発生するひび割れが、鉄
筋コンクリート柱へ取り付く梁端に集中し、鉄筋コンク
リート梁の材途上に発生するひびわれを少なくすること
ができるる。この結果、地震後には、この鉄筋コンクリ
ート梁の梁端に生じたひびわれを専ら補修すれば済み、
鉄筋コンクリート梁の補修費用を低減することができ
る。According to the first aspect of the present invention, the adhesion between the oblique reinforcing bar and the concrete is fixed to the anchorage of the oblique reinforcing bar of the reinforced concrete beam from the end of the reinforced concrete beam toward the inside of the concrete column for a predetermined length. Since the anti-adhesion preventing means is provided, the axial deformation of the oblique reinforcing bars is concentrated inside the anti-adhesion preventing means. This is because the rigidity of the reinforced concrete is higher than that of the area where the adhesion of concrete is adhered because the adhesion of the oblique reinforcement is not integrated with the concrete at the area where the means for preventing adhesion of the oblique reinforcement is provided. This is because the
Therefore, as compared with the case where the adhesion preventing means is not provided, the cracks generated in the reinforced concrete beam 1 are concentrated on the beam end attached to the reinforced concrete column, and the cracks generated on the way of the reinforced concrete beam can be reduced. It As a result, after the earthquake, it was only necessary to repair the cracks that occurred at the beam ends of this reinforced concrete beam.
The cost of repairing reinforced concrete beams can be reduced.
【０００９】請求項２に記載の発明は、例えば図１に示
すように、請求項１に記載の鉄筋コンクリート梁の構造
において、前記所定長さ１２Ｌは、前記斜鉄筋１１の径
の３倍以上かつ５倍以下であることを特徴とする。The invention according to claim 2 is, for example, as shown in FIG. 1, in the structure of the reinforced concrete beam according to claim 1, wherein the predetermined length 12L is three times or more the diameter of the diagonal reinforcing bar 11 and It is characterized by being 5 times or less.
【００１０】請求項２に記載の発明によれば、請求項１
に記載の発明と同様の効果が得られるとともに、付着防
止手段の長さが、斜鉄筋の径の３倍以上かつ５倍以下で
あるので、斜鉄筋のコンクリート柱への定着長を確保す
るのに支障をきたさない。また、斜鉄筋に付着防止手段
を取り付けるのに要する施工の手間と費用とを少なくで
きる。According to the invention of claim 2, claim 1
The effect similar to that of the invention described in (1) is obtained, and the length of the adhesion preventing means is 3 times or more and 5 times or less than the diameter of the diagonal reinforcing bar, so that the fixing length of the diagonal reinforcing bar to the concrete column is secured. It does not hurt. In addition, it is possible to reduce the labor and cost of construction required to attach the adhesion preventing means to the diagonal reinforcing bar.
【００１１】[0011]
【発明の実施の形態】以下、図面を参照しながら、本発
明の鉄筋コンクリート梁の構造の実施の形態を詳細に説
明する。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the structure of a reinforced concrete beam of the present invention will be described in detail below with reference to the drawings.
【００１２】本実施の形態の鉄筋コンクリート梁の構造
は、鉄筋コンクリート造の建物のうち、比較的スパンが
短い鉄筋コンクリート梁１に適用されたものである。こ
の鉄筋コンクリート梁の縦断面図、横断面図をそれぞれ
図１、図２に示す。The structure of the reinforced concrete beam of the present embodiment is applied to the reinforced concrete beam 1 having a relatively short span among the reinforced concrete buildings. A longitudinal sectional view and a transverse sectional view of this reinforced concrete beam are shown in FIGS. 1 and 2, respectively.
【００１３】この鉄筋コンクリート梁の構造は、図１、
図２に示すように、軸方向筋１３およびあばら筋１４が
配筋されているとともに、鉄筋コンクリート梁１の内部
に、その対角線方向にＸ字状に交差するように配置され
た斜鉄筋１１を備えるものである。斜鉄筋１１の、鉄筋
コンクリート梁１の側方に取り付くコンクリート柱２内
の定着部１１ａには、鉄筋コンクリート梁１の端からコ
ンクリート２柱の内部方向に、長さ１２Ｌにわたって、
この斜鉄筋１１とコンクリート１０との付着を絶つ付着
防止手段１２が設けられている。The structure of this reinforced concrete beam is shown in FIG.
As shown in FIG. 2, axial reinforcements 13 and ribs 14 are arranged, and diagonal reinforcing bars 11 are arranged inside the reinforced concrete beam 1 so as to intersect in a diagonal direction with an X shape. It is a thing. In the anchoring portion 11a of the diagonal reinforcing bar 11 inside the concrete column 2 attached to the side of the reinforced concrete beam 1, from the end of the reinforced concrete beam 1 toward the inside of the concrete 2 column, over a length 12L,
Adhesion preventing means 12 for cutting off the adhesion between the oblique reinforcing bar 11 and the concrete 10 is provided.
【００１４】斜鉄筋１１は、Ｄ２５（日本工業規格）の
異形鉄筋が用いられ、付着防止手段の長さ１２Ｌは、こ
の斜鉄筋の直径（約２５ｍｍ）の４倍程度の１００ｍｍ
に設定されている。付着防止手段１２は、厚さ２ｍｍ程
度の発泡樹脂テープからなり、斜鉄筋１１の上記箇所の
側面に巻き付けられて、斜鉄筋１１とコンクリート１０
との付着を絶つようになっている。As the diagonal reinforcing bar 11, a deformed reinforcing bar of D25 (Japanese Industrial Standard) is used, and the length 12L of the adhesion preventing means is 100 mm which is about four times the diameter of this oblique reinforcing bar (about 25 mm).
Is set to. The adhesion preventing means 12 is made of a foamed resin tape having a thickness of about 2 mm, and is wound around the side surface of the above-mentioned location of the oblique reinforcing bar 11 to provide the oblique reinforcing bar 11 and the concrete
It is designed to cut off adhesion with.
【００１５】本実施の形態に記載の鉄筋コンクリート梁
の構造によれば、鉄筋コンクリート梁１の斜鉄筋１１の
定着部１１ａに、鉄筋コンクリート梁１の端から前記コ
ンクリート２柱の内部方向に、所定長さ１２Ｌにわたっ
て、この斜鉄筋１１とコンクリート１０との付着を絶つ
付着防止手段１２が設けられているので、この付着防止
手段１２の内部において斜鉄筋１１の軸方向変形が集中
する。これは、斜鉄筋１１の付着防止手段１２が設けら
れた部位においては、斜鉄筋１１のコンクリート１０と
の付着が絶たれてコンクリート１０と一体化しないた
め、コンクリート１０との付着がある部位に比して、鉄
筋コンクリートの剛性が低下するためである。したがっ
て、付着防止手段１２が設けられていない場合に比し
て、鉄筋コンクリート梁１に発生するひび割れが、鉄筋
コンクリート柱１へ取り付く梁端に集中し、鉄筋コンク
リート梁１の材途上に発生するひびわれを少なくするこ
とができる。この結果、地震後には、この鉄筋コンクリ
ート梁１の梁端に生じたひびわれを専ら補修すれば済
み、鉄筋コンクリート梁１の補修費用を低減することが
できる。According to the structure of the reinforced concrete beam described in the present embodiment, the predetermined length 12L is provided in the fixing portion 11a of the oblique reinforcing bar 11 of the reinforced concrete beam 1 from the end of the reinforced concrete beam 1 toward the inside of the concrete 2 pillar. Since the adhesion preventing means 12 for cutting off the adhesion between the oblique reinforcing bar 11 and the concrete 10 is provided over the entire area, axial deformation of the oblique reinforcing bar 11 is concentrated inside the adhesion preventing means 12. This is because the adhesion of the diagonal reinforcing bar 11 to the concrete 10 is cut off at the site where the adhesion preventing means 12 of the oblique reinforcing bar 11 is provided and is not integrated with the concrete 10. Then, the rigidity of the reinforced concrete decreases. Therefore, as compared with the case where the adhesion preventing means 12 is not provided, the cracks generated in the reinforced concrete beam 1 are concentrated on the beam end attached to the reinforced concrete column 1, and the cracks generated in the material of the reinforced concrete beam 1 are reduced. be able to. As a result, after the earthquake, it is only necessary to repair the cracks generated at the beam end of the reinforced concrete beam 1, and the repair cost of the reinforced concrete beam 1 can be reduced.
【００１６】また、付着防止手段１２の長さ１２Ｌが、
斜鉄筋１１の径の４倍程度であるので、斜鉄筋１１のコ
ンクリート柱２への定着長を確保するのに支障をきたさ
ない。また、斜鉄筋１１に付着防止手段１２を取り付け
るのに要する施工の手間と費用とを少なくできる。The length 12L of the adhesion preventing means 12 is
Since the diameter is about 4 times the diameter of the diagonal reinforcing bar 11, it does not hinder the securing of the fixing length of the diagonal reinforcing bar 11 to the concrete column 2. In addition, it is possible to reduce the labor and cost of construction required to attach the adhesion preventing means 12 to the diagonal reinforcing bar 11.
【００１７】また、付着防止手段１２が、斜鉄筋１１を
被覆する発泡樹脂テープであるので、斜鉄筋１１に付着
防止手段１２を簡単に取り付けることができる。Further, since the adhesion preventing means 12 is a foamed resin tape covering the oblique reinforcing bar 11, the adhesion preventing means 12 can be easily attached to the oblique reinforcing bar 11.
【００１８】なお、本発明の鉄筋コンクリート梁の構造
は、上記の実施の形態に限定されることなく、本発明の
趣旨を逸脱しない範囲において、種々の改良並びに設計
の変更を行っても良い。例えば、上記の各実施の形態で
は、付着防止手段１１として、発泡樹脂テープを使用し
ているが、本発明はこれに限定されるものではなく、例
えば金属、ゴム、樹脂などからなるチューブなどを用
い、このチューブをその軸方向に半分に割ったものを、
ロウなどを介して斜鉄筋を両側から挟み込むように被覆
してもよい。その他、具体的な細部構造等についても適
宜に変更可能であることはもちろんである。The structure of the reinforced concrete beam of the present invention is not limited to the above-mentioned embodiment, and various improvements and design changes may be made without departing from the spirit of the present invention. For example, in each of the above embodiments, the foamed resin tape is used as the adhesion preventing means 11, but the present invention is not limited to this, and for example, a tube made of metal, rubber, resin or the like may be used. Use this tube divided in half in its axial direction,
You may coat so that a diagonal rebar may be pinched from both sides via wax etc. In addition, it goes without saying that a specific detailed structure and the like can be appropriately changed.
【００１９】[0019]
【発明の効果】請求項１記載の発明によれば、鉄筋コン
クリート梁の斜鉄筋の定着部に、鉄筋コンクリート梁の
端から前記コンクリート柱の内部方向に、所定長さにわ
たって、この斜鉄筋とコンクリートとの付着を絶つ付着
防止手段が設けられているので、この付着防止手段の内
部において斜鉄筋の軸方向変形が集中する。これは、斜
鉄筋の付着防止手段が設けられた部位においては、斜鉄
筋のコンクリートとの付着が絶たれてコンクリートと一
体化しないため、コンクリートとの付着がある部位に比
して、鉄筋コンクリートの剛性が低下するためである。
したがって、付着防止手段が設けられていない場合に比
して、鉄筋コンクリート梁１に発生するひび割れが、鉄
筋コンクリート柱へ取り付く梁端に集中し、鉄筋コンク
リート梁の材途上に発生するひびわれを少なくすること
ができるる。この結果、地震後には、この鉄筋コンクリ
ート梁の梁端に生じたひびわれを専ら補修すれば済み、
鉄筋コンクリート梁の補修費用を低減することができ
る。According to the invention as set forth in claim 1, in the anchoring portion of the oblique reinforcing bar of the reinforced concrete beam, the oblique reinforcing bar and the concrete are provided from the end of the reinforced concrete beam toward the inside of the concrete column for a predetermined length. Since the anti-adhesion means for cutting off the adhesion is provided, the axial deformation of the diagonal reinforcing bars is concentrated inside the anti-adhesion means. This is because the rigidity of the reinforced concrete is higher than that of the area where the adhesion of concrete is adhered because the adhesion of the oblique reinforcement is not integrated with the concrete at the area where the means for preventing adhesion of the oblique reinforcement is provided. This is because the
Therefore, as compared with the case where the adhesion preventing means is not provided, the cracks generated in the reinforced concrete beam 1 are concentrated on the beam end attached to the reinforced concrete column, and the cracks generated on the way of the reinforced concrete beam can be reduced. It As a result, after the earthquake, it was only necessary to repair the cracks that occurred at the beam ends of this reinforced concrete beam.
The cost of repairing reinforced concrete beams can be reduced.
【００２０】請求項２に記載の発明によれば、請求項１
に記載の発明と同様の効果が得られるとともに、付着防
止手段の長さが、斜鉄筋の径の３倍以上かつ５倍以下で
あるので、斜鉄筋のコンクリート柱への定着長を確保す
るのに支障をきたさない。また、斜鉄筋に付着防止手段
を取り付けるのに要する施工の手間と費用とを少なくで
きる。According to the invention of claim 2, claim 1
The effect similar to that of the invention described in (1) is obtained, and the length of the adhesion preventing means is 3 times or more and 5 times or less than the diameter of the diagonal reinforcing bar, so that the fixing length of the diagonal reinforcing bar to the concrete column is secured. It does not hurt. In addition, it is possible to reduce the labor and cost of construction required to attach the adhesion preventing means to the diagonal reinforcing bar.
【図１】本発明の鉄筋コンクリート梁の構造の一例を示
す、断面図である。FIG. 1 is a cross-sectional view showing an example of the structure of a reinforced concrete beam of the present invention.
【図２】図１における、Ａ−Ａ断面図である。FIG. 2 is a sectional view taken along line AA in FIG.
１ 鉄筋コンクリート梁 １１ 斜鉄筋 １１ａ 定着部 １２ 付着除去手段 １２Ｌ （付着除去手段の）長さ 1 reinforced concrete beams 11 diagonal rebar 11a fixing unit 12 Adhesion removing means 12L (of adhesion removal means) length
───────────────────────────────────────────────────── フロントページの続き (72)発明者 山本 憲一郎 東京都千代田区富士見二丁目10番26号 前 田建設工業株式会社内 Ｆターム(参考） 2E163 FA12 FD02 FD12 FD32 FD43 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Kenichiro Yamamoto 2-10-26 Fujimi, Chiyoda-ku, Tokyo Within Ta Construction Industry Co., Ltd. F-term (reference) 2E163 FA12 FD02 FD12 FD32 FD43
Claims (2)
線方向にＸ字状に交差するように配置された斜鉄筋を備
える鉄筋コンクリート梁の構造において、 前記斜鉄筋の、前記鉄筋コンクリート梁の側方に取り付
くコンクリート柱内の定着部には、前記鉄筋コンクリー
ト梁の端から前記コンクリート柱の内部方向に、所定長
さにわたって、この斜鉄筋とコンクリートとの付着を絶
つ付着防止手段が設けられていることを特徴とする鉄筋
コンクリート梁の構造。1. A structure of a reinforced concrete beam, comprising diagonal reinforced concrete beams arranged inside a reinforced concrete beam so as to intersect with each other in an X shape in a diagonal direction thereof, wherein the concrete attached to the side of the reinforced concrete beam of the diagonal reinforcement is The fixing portion in the column is characterized by being provided with adhesion preventing means for cutting off the adhesion between the oblique reinforcing bar and the concrete over a predetermined length from the end of the reinforced concrete beam toward the inside of the concrete column. Structure of reinforced concrete beams.
構造において、 前記所定長さは、前記斜鉄筋の径の３倍以上かつ５倍以
下であることを特徴とする鉄筋コンクリート梁の構造。2. The structure of the reinforced concrete beam according to claim 1, wherein the predetermined length is not less than 3 times and not more than 5 times the diameter of the diagonal reinforcing bar.
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| JP2002149072A JP3938718B2 (en) | 2002-05-23 | 2002-05-23 | Reinforced concrete beam structure |
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| JP3938718B2 JP3938718B2 (en) | 2007-06-27 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005299101A (en) * | 2004-04-07 | 2005-10-27 | Hisahiro Hiraishi | Joint part structure of concrete members |
| CN100443671C (en) * | 2006-11-03 | 2008-12-17 | 北京工业大学 | Reinforced concrete bearing platform arranged with diagonal reinforcing steel and method for manufacturing same |
| JP2015178757A (en) * | 2014-03-20 | 2015-10-08 | 株式会社熊谷組 | Reinforcement structure for reinforced concrete footing beam |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101125917B1 (en) | 2010-02-10 | 2012-03-21 | 서울시립대학교 산학협력단 | Prestressed steel concrete composite beam |
-
2002
- 2002-05-23 JP JP2002149072A patent/JP3938718B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005299101A (en) * | 2004-04-07 | 2005-10-27 | Hisahiro Hiraishi | Joint part structure of concrete members |
| JP4642373B2 (en) * | 2004-04-07 | 2011-03-02 | 久廣 平石 | Concrete member joint structure |
| CN100443671C (en) * | 2006-11-03 | 2008-12-17 | 北京工业大学 | Reinforced concrete bearing platform arranged with diagonal reinforcing steel and method for manufacturing same |
| JP2015178757A (en) * | 2014-03-20 | 2015-10-08 | 株式会社熊谷組 | Reinforcement structure for reinforced concrete footing beam |
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