JPH11264214A - Mortar-filled reinforcement joint - Google Patents

Mortar-filled reinforcement joint

Info

Publication number
JPH11264214A
JPH11264214A JP6809398A JP6809398A JPH11264214A JP H11264214 A JPH11264214 A JP H11264214A JP 6809398 A JP6809398 A JP 6809398A JP 6809398 A JP6809398 A JP 6809398A JP H11264214 A JPH11264214 A JP H11264214A
Authority
JP
Japan
Prior art keywords
mortar
joint
exhaust port
filled
cylindrical 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.)
Pending
Application number
JP6809398A
Other languages
Japanese (ja)
Inventor
Yasuharu Abe
康晴 阿部
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.)
Tokyo Tekko Co Ltd
Original Assignee
Tokyo Tekko 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 Tokyo Tekko Co Ltd filed Critical Tokyo Tekko Co Ltd
Priority to JP6809398A priority Critical patent/JPH11264214A/en
Publication of JPH11264214A publication Critical patent/JPH11264214A/en
Pending legal-status Critical Current

Links

Abstract

PROBLEM TO BE SOLVED: To provide a joint generating no air collection inside even when mortar is filled by keeping the joint horizontal in the joint having inside annular projections to strengthen joining with the mortar. SOLUTION: A joint is composed of an iron cylinder body 1, reinforcement inserting ports 5, 6 arranged on the end surface of both end parts 3, 4 of cylinder pairs, a mortar filling port 7 arranged on one side periphery of both end parts, an exhaust port 8 arranged on the other side periphery and plural axial directionally juxtaposed annular projections 2 integrally arranged on the inner peripheral surface of the cylinder body. Then, plural slits 14 communicating when viewed in the axial direction are formed in the respective annular projections.

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】本発明は鉄製の筒体からなる
モルタル充填式鉄筋継手に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mortar-filled rebar joint made of an iron cylinder.

【0002】[0002]

【従来の技術】モルタル充填式鉄筋継手は鉄製筒体の内
部に2本の鉄筋端部を対向するように挿入し、ついで、
内部に注入したモルタルを介して筒体と2本の鉄筋を結
合する。モルタルと筒体の結合をより緊密にするため、
筒体の内周面に多数の横断面長方形又は山形の環状突起
を一体に形成することは周知である。
2. Description of the Related Art A mortar-filled rebar joint is inserted into a steel cylinder so that two rebar ends are opposed to each other.
The cylinder and the two rebars are connected via the mortar injected inside. To make the connection between the mortar and cylinder tighter,
It is well known that a large number of rectangular or mountain-shaped annular projections are formed integrally on the inner peripheral surface of a cylindrical body.

【0003】[0003]

【発明が解決しようとする課題】継手を垂直にしてモル
タルを注入する場合、内部の環状突起はモルタルの流れ
は比較的順調であり、空気溜りが生じることはないが、
梁等の鉄筋を結合するとき、継手を水平にしてモルタル
を注入すると、環状突起のためにモルタルの筒体内の流
れが不円滑になり、注入に要する労力が増大するだけで
なく、環状突起を背にした空気溜りができやすい。この
空気溜りが筒体内に発生すると、モルタルの充填率が低
下し、継手の性能も低下する。これを防止するために
は、モルタルが出口から溢れ出た後も、さらにモルタル
を注入して溜った空気を押し出す必要があり、これがモ
ルタル歩留と施工性を低下させていた。
When the mortar is injected with the joint vertical, the inner annular projection has a relatively smooth flow of the mortar and does not cause air pockets.
When connecting mortar with horizontal joints when connecting reinforcing bars such as beams, the flow of the mortar in the cylinder becomes uneven due to the annular projection, which not only increases the labor required for injection, but also increases the annular projection. It is easy to form an air pocket on the back. When this air pocket is generated in the cylinder, the filling rate of the mortar decreases, and the performance of the joint also decreases. In order to prevent this, even after the mortar overflows from the outlet, it is necessary to further inject the mortar and push out the accumulated air, which has reduced the mortar yield and workability.

【0004】本発明は上記に鑑みてなされたものであ
り、その課題は、内周面に環状突起を有するモルタル充
填式鉄筋継手の水平施工時におけるモルタル歩留と施工
性を改善することにある。
[0004] The present invention has been made in view of the above, and an object of the present invention is to improve the mortar yield and workability of a mortar-filled rebar joint having an annular projection on the inner peripheral surface during horizontal construction. .

【0005】[0005]

【課題を解決するための手段】前記目的を達成するた
め、本発明の採用する手段は、鉄製の筒体と、その筒体
の内周面に設けた複数の環状突起と、筒体の一端部に設
けたモルタル注入口と、筒体の他端部に設けた排気口と
からなるモルタル充填式鉄筋継手において、モルタル注
入口と排気口の間にある環状突起に軸方向に見て連通す
るスリットを設けたことにある。
In order to achieve the above object, the present invention employs an iron cylinder, a plurality of annular projections provided on an inner peripheral surface of the cylinder, and one end of the cylinder. In a mortar-filled rebar joint consisting of a mortar inlet provided in the portion and an exhaust port provided in the other end of the cylindrical body, it communicates with the annular projection between the mortar inlet and the exhaust port as viewed in the axial direction. It has a slit.

【0006】スリットの半径方向幅は排気口の内径の
0.5〜1.0倍とし、環状突起に3個のスリットを設
け、第1スリットは角度位置を排気口の角度位置と同一
に、第2及び第3スリットは排気口の角度位置と直交し
て対向する角度位置に設定することが好ましい。
The radial width of the slit is 0.5 to 1.0 times the inner diameter of the exhaust port, three slits are provided on the annular projection, and the first slit has the same angular position as that of the exhaust port. It is preferable that the second and third slits be set at angular positions orthogonal to and opposed to the angular position of the exhaust port.

【0007】[0007]

【発明の実施の形態】本発明を図面に示す実施例につい
て説明する。図1は鉄製の筒体1からなるモルタル充填
式鉄筋継手の縦断面図であり、図2は図1のII−II
線矢視図である。筒体1の内周面に多数の横断面長方形
の環状突起2を一体に設けてモルタルとの接触面積を増
大して結合を強化する。多数の環状突起2は軸方向に間
隔をあけて並ぶ。筒体1は両端部3、4の端面中央に挿
入口5、6を、一方の端部3の周面にモルタル注入口7
を、他方の端部4の周面に排気口8をそれぞれ備える。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to an embodiment shown in the drawings. FIG. 1 is a longitudinal sectional view of a mortar-filled reinforcing bar joint made of an iron cylindrical body 1, and FIG. 2 is a II-II of FIG.
FIG. A large number of annular projections 2 having a rectangular cross section are integrally provided on the inner peripheral surface of the cylindrical body 1 to increase the contact area with the mortar to strengthen the connection. A large number of annular projections 2 are arranged at intervals in the axial direction. The cylindrical body 1 has insertion ports 5 and 6 at the center of the end faces of both ends 3 and 4, and a mortar injection port 7 at the peripheral face of one end 3.
And an exhaust port 8 on the peripheral surface of the other end 4.

【0008】図1及び図2に示すように、モルタル注入
口7と排気口8の間にあるすべての環状突起2に軸方向
に見ると連通する3個のスリット14、14a、14b
を設ける。各スリットの内幅は排気口8の内径の0.5
〜1.0倍である。中央の第1スリット14の筒体1の
軸心に関する角度位置は排気口8の角度位置と同一であ
り、第2及び第3スリット14a、14bの角度位置は
排気口8の角度位置に直交して対向する。
As shown in FIGS. 1 and 2, three slits 14, 14a, 14b communicating with all the annular projections 2 between the mortar inlet 7 and the outlet 8 when viewed in the axial direction.
Is provided. The inner width of each slit is 0.5 of the inner diameter of the exhaust port 8.
~ 1.0 times. The angular position of the center first slit 14 with respect to the axis of the cylinder 1 is the same as the angular position of the exhaust port 8, and the angular positions of the second and third slits 14 a and 14 b are orthogonal to the angular position of the exhaust port 8. Face each other.

【0009】次に、梁等の水平に突出する鉄筋を接続す
る施工について説明する。図3に示すように、水平に置
かれた筒体1の両端部3、4の端面に位置する挿入口
5、6から鉄筋11、12を挿入し、ついで、挿入口
5、6に外側からシール9、10をはめて筒体1の端面
を封止する。一方の端部3のモルタル注入口7からモル
タル13を注入する。モルタル13は筒体1の内部の一
方の端部3から他方の端部4へ流れ、その間の筒体1の
内周面と鉄筋11、12の外周面の間の空隙を充填して
いく。
Next, construction for connecting a horizontally protruding reinforcing bar such as a beam will be described. As shown in FIG. 3, rebars 11 and 12 are inserted from insertion ports 5 and 6 located at the end faces of both ends 3 and 4 of the cylinder 1 placed horizontally, and then inserted into the insertion ports 5 and 6 from outside. The seals 9 and 10 are fitted to seal the end surface of the cylindrical body 1. The mortar 13 is injected from the mortar injection port 7 at one end 3. The mortar 13 flows from one end 3 to the other end 4 inside the cylindrical body 1, and fills a gap between the inner peripheral surface of the cylindrical body 1 and the outer peripheral surfaces of the reinforcing bars 11 and 12 therebetween.

【0010】このとき、環状突起2はモルタル13の流
れの抵抗になるが、本発明の環状突起2は従来のものと
は異なり、モルタル13が通るスリット14があるか
ら、モルタル13の軸方向の流れに対する抵抗は比較的
小さく、モルタル13を注入口から注入する労力も節減
される。又、筒体1の内部の空気はモルタル13に押さ
れ、矢印で示すように、環状突起2のスリット14を通
して軸方向に逃げるから、環状突起2を背にする空気溜
りが生じるおそれはない。このように、筒体1の内部に
空気溜りが生じないから、モルタル13が排気口8から
溢れ出た後に再度モルタル13を注入してモルタルの歩
留を犠牲にする必要はなくなる。
At this time, the annular projection 2 becomes a resistance to the flow of the mortar 13. However, unlike the conventional one, the annular projection 2 of the present invention has a slit 14 through which the mortar 13 passes. The resistance to flow is relatively low and the effort to inject mortar 13 from the inlet is reduced. Further, the air inside the cylindrical body 1 is pushed by the mortar 13 and escapes in the axial direction through the slit 14 of the annular projection 2 as shown by an arrow, so that there is no possibility that an air pocket behind the annular projection 2 is generated. As described above, since no air pool is generated inside the cylindrical body 1, there is no need to sacrifice the mortar yield by injecting the mortar 13 again after the mortar 13 overflows from the exhaust port 8.

【0011】特に、モルタル注入口7と排気口8が上向
きの場合は、モルタル13に押し出された内部の空気は
上部に逃げ、そこからスリット14を通って排気口8か
らすぐに抜けるから、モルタル13が排気口8から溢れ
出るまでに要する時間と労力は大幅に減少し、施工は至
極容易である。モルタル注入口と排気口が横向きの場合
も、各環状突起に角度位置が直交する3個のスリットを
設けると、少なくとも1つのスリットは筒体の上内面に
位置するから、モルタルにより押し出されて筒体1内の
上部に逃げた空気は、そのスリットを通って排気口が位
置する内周面まで移動し、ついで排気口から抜ける。し
たがって、モルタル注入口と排気口が横向きであっても
内部に空気溜りは生じないから、モルタル注入口と排気
口が上向きのとき程ではないとしても、やはり施工は容
易であり、モルタルが排気口から溢れ出た後に再度モル
タルを注入してモルタル歩留を犠牲にする必要はない。
In particular, when the mortar inlet 7 and the exhaust port 8 face upward, the internal air pushed out by the mortar 13 escapes to the upper part, and immediately escapes from the exhaust port 8 through the slit 14. The time and labor required for the 13 to overflow from the exhaust port 8 is greatly reduced, and the construction is extremely easy. Even when the mortar inlet and the exhaust port are oriented sideways, if each annular projection is provided with three slits whose angular positions are orthogonal to each other, at least one slit is located on the upper inner surface of the cylindrical body. The air escaping to the upper part in the body 1 moves through the slit to the inner peripheral surface where the exhaust port is located, and then escapes from the exhaust port. Therefore, even if the mortar inlet and the exhaust port are sideways, there is no air pocket inside. There is no need to saturate the mortar by injecting the mortar again after overflowing the mortar.

【0012】[0012]

【発明の効果】上記のとおり、本発明の継手は、筒体内
部にモルタルとの結合を強化する環状突起を有するが、
従来のものとは異なり、環状突起が軸方向に見ると連通
するスリットを有するため、継手を水平にしてモルタル
を注入しても、内部に空気溜りは生じないから、空気溜
りを排除するために余分のモルタルを注入してモルタル
歩留と施工性を低下させる必要はないという優れた効果
を奏する。
As described above, the joint of the present invention has an annular projection inside the cylindrical body for strengthening the connection with the mortar.
Unlike conventional ones, the annular projection has a slit that communicates when viewed in the axial direction, so even if the joint is horizontal and mortar is injected, there is no air pocket inside, so in order to eliminate the air pocket An excellent effect is obtained in that it is not necessary to inject extra mortar to lower mortar yield and workability.

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

【図1】本発明の一実施例のモルタル充填式鉄筋継手の
縦断面図、
FIG. 1 is a longitudinal sectional view of a mortar-filled rebar joint according to one embodiment of the present invention;

【図2】図1のII−II線矢視図、FIG. 2 is a view taken along line II-II of FIG. 1;

【図3】図1の継手による施工を示す図、FIG. 3 is a view showing construction by the joint of FIG. 1;

【符号の説明】[Explanation of symbols]

1:筒体 2:環状突起 3、4:端部 5、6:挿入口 7:モルタル注入口 8:排気口 9、10:シール 11、12:鉄筋 13:モルタル 14:スリット 1: cylindrical body 2: annular projection 3, 4: end 5, 6: insertion port 7: mortar inlet 8: exhaust port 9, 10: seal 11, 12: reinforcing bar 13: mortar 14: slit

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 鉄製の筒体(1)と、前記筒体の両端部
(3、4)の端面に設けた鉄筋の挿入口(5、6)と、
前記両端部の一方の側周に設けたモルタル注入口(7)
と、他方の側周に設けた排気口(8)と、前記筒体の内
周面に一体に設けた複数の軸方向に並ぶ環状突起(2)
とからなる継手であって、各環状突起(2)に軸方向に
見ると連通する1個以上のスリット(14)を形成した
ことを特徴とするモルタル充填式鉄筋継手。
1. An iron cylinder (1), and insertion holes (5, 6) for reinforcing bars provided at end faces of both ends (3, 4) of the cylinder.
Mortar injection port (7) provided on one side circumference of the both ends
And an exhaust port (8) provided on the other side circumference, and a plurality of axially aligned annular projections (2) provided integrally on the inner circumferential surface of the cylindrical body.
A mortar-filled rebar joint, characterized in that one or more slits (14) communicating with each annular projection (2) when viewed in the axial direction are formed.
【請求項2】 各環状突起(2)に3個のスリット(1
4、14a、14b)を設け、筒体(1)の軸心に関し
て第1スリット(14)は排気口(8)と同一角度位置
に、第2及び第3のスリット(14a、14b)は前記
排気口に直交して対向する角度位置に設定したことを特
徴とする請求項1記載のモルタル充填式鉄筋継手。
2. Each annular projection (2) has three slits (1).
4, 14a, 14b), the first slit (14) is at the same angular position as the exhaust port (8) with respect to the axis of the cylindrical body (1), and the second and third slits (14a, 14b) are The mortar-filled reinforcing steel joint according to claim 1, wherein the mortar-filled reinforcing steel joint is set at an angular position orthogonal to and opposed to the exhaust port.
JP6809398A 1998-03-18 1998-03-18 Mortar-filled reinforcement joint Pending JPH11264214A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6809398A JPH11264214A (en) 1998-03-18 1998-03-18 Mortar-filled reinforcement joint

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6809398A JPH11264214A (en) 1998-03-18 1998-03-18 Mortar-filled reinforcement joint

Publications (1)

Publication Number Publication Date
JPH11264214A true JPH11264214A (en) 1999-09-28

Family

ID=13363789

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6809398A Pending JPH11264214A (en) 1998-03-18 1998-03-18 Mortar-filled reinforcement joint

Country Status (1)

Country Link
JP (1) JPH11264214A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008063729A (en) * 2006-09-04 2008-03-21 Godo Steel Ltd Sleeve for reinforcing bar joint, joint using the sleeve, and reinforcement structure
JP2012251327A (en) * 2011-06-01 2012-12-20 Shimizu Corp Coupler for joining reinforcement
JP2016003438A (en) * 2014-06-13 2016-01-12 東京鐵鋼株式会社 Metal fixture for screw reinforcement and fixing method therefor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008063729A (en) * 2006-09-04 2008-03-21 Godo Steel Ltd Sleeve for reinforcing bar joint, joint using the sleeve, and reinforcement structure
JP2012251327A (en) * 2011-06-01 2012-12-20 Shimizu Corp Coupler for joining reinforcement
JP2016003438A (en) * 2014-06-13 2016-01-12 東京鐵鋼株式会社 Metal fixture for screw reinforcement and fixing method therefor

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