JP2601502Y2 - Reinforcing bars for reinforced concrete members - Google Patents
Reinforcing bars for reinforced concrete membersInfo
- Publication number
- JP2601502Y2 JP2601502Y2 JP1993001153U JP115393U JP2601502Y2 JP 2601502 Y2 JP2601502 Y2 JP 2601502Y2 JP 1993001153 U JP1993001153 U JP 1993001153U JP 115393 U JP115393 U JP 115393U JP 2601502 Y2 JP2601502 Y2 JP 2601502Y2
- Authority
- JP
- Japan
- Prior art keywords
- reinforcing bar
- reinforced concrete
- shape
- reinforcing bars
- concrete members
- 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.)
- Expired - Lifetime
Links
Landscapes
- Reinforcement Elements For Buildings (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本考案は、鉄筋コンクリート部材
に用いられる鉄筋の端部（定着部）の形状、ならびに、
その形状とするための金物の装着方法に関するものであ
る。The present invention relates to a shape of an end (anchoring portion) of a reinforcing bar used for a reinforced concrete member, and
The present invention relates to a method of mounting hardware for forming the shape.
【０００２】[0002]
【従来の技術】鉄筋コンクリート部材（例えば梁）はそ
れを支持する鉄筋コンクリート部材（例えば柱）に十分
に定着されている必要があり、このため例えば梁側の鉄
筋の端部（定着部）を例えば柱側に延長しておいてコン
クリートを打設するのが通常である。この端部（定着
部）の鉄筋の形状としては、単に鉄筋をその径の数十倍
の長さ延長しておくもの、鉄筋の先端をフック状に折り
曲げ延長しておくもの（図２）、鉄筋としてネジフシ鉄
筋を使用し、その端部に鋼板（正方形または円形）をナ
ットで固定したものを延長しておくことにより延長の長
さを低減しようとするもの（図３）が知られている。2. Description of the Related Art A reinforced concrete member (for example, a beam) needs to be sufficiently fixed to a reinforced concrete member (for example, a column) that supports the member. It is usual to cast concrete while extending to the side. Examples of the shape of the reinforcing bar at the end (fixing portion) include a type in which the reinforcing bar is simply extended by several tens times its diameter, a type in which the tip of the reinforcing bar is bent and extended in a hook shape (FIG. 2), There has been known a method in which a screw reinforcing bar is used as a reinforcing bar, and a steel plate (square or circular) fixed to an end of the reinforcing bar with a nut is extended to reduce the length of the reinforcing bar (FIG. 3). .
【０００３】また、同一鉄筋コンクリート部材内でもコ
ンクリートと鉄筋との定着をよくするため異形鉄筋を使
用したり、端部をフック状に折り曲げたりしている。Further, even in the same reinforced concrete member, a deformed reinforcing bar is used or the end is bent in a hook shape in order to improve the fixation between the concrete and the reinforcing bar.
【０００４】[0004]
【考案が解決しようとする課題】しかし、支持する部材
側の鉄筋が込み合っている場合や埋設物などがある場合
には、従来の形状では延長しようとする鉄筋の挿入が困
難となったり、所定の長さの鉄筋を挿入できないという
事態を招くことがある。However, when the reinforcing bars on the supporting member side are crowded or when there is a buried object, it becomes difficult to insert the reinforcing bars to be extended with the conventional shape, Can not be inserted.
【０００５】また、同一鉄筋コンクリート部材内でもコ
ンクリートと鉄筋との定着性の向上が求められている。[0005] Further, even within the same reinforced concrete member, there is a demand for an improvement in fixation between the concrete and the reinforcing bar.
【０００６】本考案は、定着性の向上した鉄筋の端部
（定着部）の形状、ならびに、その形状とするための金
物の装着方法に関するものである。[0006] The present invention relates to a shape of an end portion (fixing portion) of a reinforcing bar having improved fixability, and a method of mounting metal fittings to obtain the shape.
【０００７】[0007]
【課題を解決するための手段】本考案は、鉄筋として異
形鉄筋を使用するとともに、その異形鉄筋の末端を、円
錐台形金物とその上面の円筒状スリーブとが一体となっ
ている金物のスリーブ部に挿入し、スリーブ部をダイス
で絞って、異形鉄筋の末端の形状を末拡がりの円錐台形
にしたものである。円錐台形金物とその上面の円筒状ス
リーブとが一体となっている金物のスリーブ部に異形鉄
筋を挿入してスリーブ部をダイスで絞ることにより、簡
単かつ確実に端部を末拡がりの形状とすることができ、
異形鉄筋の端部形状を末拡がりの形状とすることによ
り、従来の単に鉄筋を挿入する場合やフック付き鉄筋を
挿入する場合に比して挿入する鉄筋の長さを低減するこ
とができる。また、鋼板を固定した鉄筋を挿入する場合
に比して、鉄筋とコンクリートとの応力の伝達の際の応
力分散が図れるので、鋼板の幅（径）よりも円錐台底面
の径を小さくすることができる。According to the present invention, a deformed reinforcing bar is used as a reinforcing bar, and the end of the deformed reinforcing bar is formed by a frusto-conical shaped metal member and a cylindrical sleeve on the upper surface thereof. And the sleeve portion is squeezed with a die to make the shape of the end of the deformed reinforcing bar into a divergent frustoconical shape. By inserting a deformed reinforcing bar into the sleeve part of the metal part in which the truncated cone-shaped metal part and the cylindrical sleeve on the upper surface are integrated, and squeezing the sleeve part with a die, the end part is easily and surely made to have a flared shape. It is possible,
By making the end shape of the deformed reinforcing bar a flared shape, the length of the reinforcing bar to be inserted can be reduced as compared with the conventional case where a reinforcing bar is simply inserted or a case where a hooked reinforcing bar is inserted. Also, the diameter of the bottom of the truncated cone can be made smaller than the width (diameter) of the steel sheet, as compared to the case where a reinforcing steel bar with a steel plate is inserted, since the stress distribution when transmitting the stress between the reinforcing steel bar and the concrete can be achieved. Can be.
【０００８】本考案の端部形状の異形鉄筋は主筋の定着
部のみでなく、剪断補強筋（帯筋、あばら筋、面外剪断
補強筋）、開口補強筋などにも採用され、同一鉄筋コン
クリート部材内でのコンクリートと鉄筋との定着性の向
上に寄与する。The deformed reinforcing bar having an end shape according to the present invention is used not only for the anchoring portion of the main bar but also for shear reinforcing bars (band bars, stirrups, out-of-plane shear reinforcing bars), opening reinforcing bars, and the like. It contributes to the improvement of the anchorage between the concrete and the reinforcing steel inside.
【０００９】また、プレキャスト鉄筋コンクリート部材
より突出している鉄筋についても採用され、接続する他
の鉄筋コンクリート部材との定着性の向上に寄与する。[0009] Reinforcing bars protruding from the precast reinforced concrete member are also employed, contributing to an improvement in fixation with other reinforced concrete members to be connected.
【００１０】[0010]
【実施例】以下、図面を参照して、本考案を具体的に説
明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to the drawings.
【００１１】図１は本考案の鉄筋コンクリート部材用鉄
筋定着部を例示した断面図であり、スリーブ付きの円錐
台形金物１のスリーブ部に異形鉄筋２の末端を挿入しダ
イス７でスリーブを絞って装着したものを示している。
この装着方法により、他の装着方法に比して、比較的簡
単で、かつ、確実に装着することができる。FIG. 1 is a sectional view showing an example of a reinforcing bar fixing portion for a reinforced concrete member according to the present invention. The end of the deformed reinforcing bar 2 is inserted into the sleeve portion of a frustoconical metal fitting 1 having a sleeve, and the sleeve is squeezed by a die 7 to be mounted. This is shown.
With this mounting method, the mounting can be performed relatively easily and reliably as compared with other mounting methods.
【００１２】[0012]
【考案の効果】異形鉄筋の端部を簡単かつ確実に末拡が
り状にでき、この形状の本考案の異形鉄筋を使用するこ
とにより、鉄筋とコンクリートとの応力の伝達の際の応
力集中を排除することができるので、鋼板を固定した鉄
筋を挿入する場合に比して、鋼板の幅（径）よりも円錐
台底面の径を小さくすることができる。また、単に鉄筋
を挿入する場合やフック付き鉄筋を挿入する場合に比し
て挿入する鉄筋の長さを低減することができる。さら
に、同一鉄筋コンクリート部材内でもコンクリートと鉄
筋との定着性の向上に寄与する。[Effect of the Invention] The end of the deformed reinforcing bar can be easily and surely formed into a flared shape, and by using the deformed reinforcing bar of the present invention of this shape, stress concentration at the time of transmitting the stress between the reinforcing bar and the concrete is eliminated. Therefore, the diameter of the bottom surface of the truncated cone can be made smaller than the width (diameter) of the steel plate as compared with the case where a reinforcing steel bar to which the steel plate is fixed is inserted. Further, the length of the inserted rebar can be reduced as compared with a case where a rebar is simply inserted or a case where a rebar with a hook is inserted. Furthermore, even in the same reinforced concrete member, it contributes to the improvement of the fixation between the concrete and the reinforcing bar.
【図１】本考案の異形鉄筋の断面図である。FIG. 1 is a sectional view of a deformed reinforcing bar of the present invention.
【図２】従来のフック付き鉄筋を柱部材の主筋とし、そ
の端部を基礎部材内に配設した概念立断面図である。FIG. 2 is a conceptual vertical sectional view in which a conventional reinforcing bar with a hook is used as a main reinforcing bar of a column member, and an end portion thereof is disposed in a foundation member.
【図３】従来の鋼板を固定した鉄筋を柱部材の主筋と
し、その端部を基礎部材内に配設した概念立断面図であ
る。FIG. 3 is a conceptual cross-sectional view in which a conventional reinforcing bar to which a steel plate is fixed is used as a main reinforcing bar of a column member, and an end of the reinforcing bar is disposed in a base member.
１…円錐台形金物、２…異形鉄筋、４…柱部材、５…基
礎部材、７…ダイス。DESCRIPTION OF SYMBOLS 1 ... Frustoconical metal fitting, 2 ... Deformed bar, 4 ... Column member, 5 ... Foundation member, 7 ... Dice.
フロントページの続き (72)考案者 大原 英司 東京都港区元赤坂１丁目２番７号 鹿島 建設株式会社内 (72)考案者 大森 信次 東京都八王子市中野山王１−１−２ (56)参考文献 特開 昭61−87053（ＪＰ，Ａ) 実開 昭64−7608（ＪＰ，Ｕ) 実開 昭57−172819（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.6，ＤＢ名) E04C 5/03 Continuing on the front page (72) Eiji Ohara 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. (72) Shinji Omori 1-1-2 Nakano Sanno, Hachioji-shi, Tokyo (56) References JP-A-61-87053 (JP, A) JP-A 64-7608 (JP, U) JP-A-57-172819 (JP, U) (58) Fields investigated (Int. Cl. 6 , DB name) ) E04C 5/03
Claims (1)
上面の円筒状スリーブとが一体となっている金物のスリ
ーブ部に挿入し、スリーブ部をダイスで絞って、異形鉄
筋の末端に円錐台形金物を末拡がり状に装着してある鉄
筋コンクリート部材用鉄筋。1. An end of a deformed reinforcing bar is inserted into a sleeve portion of a metal body in which a truncated cone-shaped metal member and a cylindrical sleeve on the upper surface thereof are integrated, and the sleeve portion is squeezed with a die to form a cone at the end of the deformed reinforcing bar. Reinforcement for reinforced concrete members with trapezoidal hardware mounted in a flared shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1993001153U JP2601502Y2 (en) | 1993-01-20 | 1993-01-20 | Reinforcing bars for reinforced concrete members |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1993001153U JP2601502Y2 (en) | 1993-01-20 | 1993-01-20 | Reinforcing bars for reinforced concrete members |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0656257U JPH0656257U (en) | 1994-08-05 |
| JP2601502Y2 true JP2601502Y2 (en) | 1999-11-22 |
Family
ID=11493493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1993001153U Expired - Lifetime JP2601502Y2 (en) | 1993-01-20 | 1993-01-20 | Reinforcing bars for reinforced concrete members |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2601502Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5392748B2 (en) * | 2008-10-07 | 2014-01-22 | 前田建設工業株式会社 | Fixing structure and fixing method of reinforcing bar to reinforced concrete structure |
-
1993
- 1993-01-20 JP JP1993001153U patent/JP2601502Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0656257U (en) | 1994-08-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19990824 |