JPH0759839B2 - Reinforcing bar joint method - Google Patents
Reinforcing bar joint methodInfo
- Publication number
- JPH0759839B2 JPH0759839B2 JP2178515A JP17851590A JPH0759839B2 JP H0759839 B2 JPH0759839 B2 JP H0759839B2 JP 2178515 A JP2178515 A JP 2178515A JP 17851590 A JP17851590 A JP 17851590A JP H0759839 B2 JPH0759839 B2 JP H0759839B2
- Authority
- JP
- Japan
- Prior art keywords
- mortar
- steel pipe
- reinforcing bar
- joint method
- present
- 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
【発明の詳細な説明】 （産業上の利用分野） 本発明は、プレキャストコンクリート部材（以下、PC部
材という）のモルタル充填式鉄筋継手に関する。TECHNICAL FIELD The present invention relates to a mortar-filled rebar joint for precast concrete members (hereinafter referred to as PC members).
（従来の技術） 一般に、PC部材の主筋を接合する継手方法において、溶
接による方法が多く用いられてきたが、風雨等により作
業が中断されたり、火花による火災等の危険もあった。(Prior Art) Generally, a welding method has been widely used in a joint method for joining main bars of a PC member, but there is a risk of work being interrupted by wind and rain or a fire caused by a spark.
そこで、鋼管内モルタル充填式鉄筋継手が採用されるよ
うになり、強固な接合が得られるようになった。Therefore, mortar-filled steel bar joints in steel pipes have been adopted, and strong joints have been obtained.
（発明が解決しようとする課題） しかしながら、上述の方法においても、モルタルを鋼管
内に充填した後に、特にモルタル強度の低いときに振動
を与えると強度の低下をもたらすことになる。それを避
けるために、早期にモルタル強度の発現が必要であるが
寒い地域では養生期間を長くしなければならず、工期が
長くなると言った欠点が存在した。(Problems to be Solved by the Invention) However, also in the above-described method, when the steel pipe is filled with mortar and then vibration is applied particularly when the mortar strength is low, the strength is reduced. In order to avoid this, early development of mortar strength is required, but the curing period must be lengthened in cold regions, and the construction period becomes longer, which is a drawback.
本発明は、上記の課題に鑑みてなされたもので、モルタ
ルの強度を早期に発現させる鉄筋の継手方法を提供する
ことを目的とする。The present invention has been made in view of the above problems, and an object of the present invention is to provide a jointing method for a reinforcing bar that allows early development of the strength of mortar.
（課題を解決するための手段） 本発明に係る鉄筋の継手方法の上記課題を解決し、目的
を達成するための要旨は、プレキャストコンクリート部
材の鉄筋を鋼管内に内挿後、該鋼管内にモルタルを注入
して硬化させて接合する鋼管内モルタル充填式鉄筋継手
において、モルタルを鋼管内に注入後、該鋼管の周囲を
発熱体で包囲し、更に、断熱材で被包して前記モルタル
を養生し、早期に所要強度の発現を図ることに存する。(Means for Solving the Problem) The gist of solving the above-mentioned problems of the reinforcing bar joint method according to the present invention and achieving the object is to insert the reinforcing bar of the precast concrete member into the steel pipe, and then In a mortar-filled type reinforced mortar joint in a steel pipe for injecting mortar and hardening and joining the mortar, after injecting the mortar into the steel pipe, the periphery of the steel pipe is surrounded by a heating element and further covered with a heat insulating material to form the mortar It consists in curing and early development of the required strength.
（作用） このように、本発明に係る鉄筋の継手方法によれば、鋼
管内に充填されたモルタルを発熱体と断面体の作用によ
り、継続的に加熱し保温するのでモルタルの強度発現を
促進することとなる。(Operation) As described above, according to the joint method for a reinforcing bar according to the present invention, the mortar filled in the steel pipe is continuously heated and kept warm by the action of the heating element and the cross-sectional body, so that the strength development of the mortar is promoted. Will be done.
（実施例） 以下、添付図面に従って、本発明の一実施例を説明す
る。第１図は、本発明の正面図であり、第２図は同じく
縦断面図である。Embodiment An embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a front view of the present invention, and FIG. 2 is a longitudinal sectional view of the same.
図において、符号１は、プレキャストコンクリート梁
（以下PC梁という）、２はPC梁１の下端筋、３はスター
ラップを示している。In the figure, reference numeral 1 is a precast concrete beam (hereinafter referred to as PC beam), 2 is a lower end streak of the PC beam 1, and 3 is a stirrup.
ここにおいて本発明は、前記PC梁１の下端筋２を鋼管４
内に内挿後、該鋼管４内にモルタルを注入し、該鋼管４
の周囲を複数の発熱体５（例えば、化学発熱剤等）で包
囲する。更に、断熱材６（ダラスウール等）で被包して
前記モルタルを養生する。Here, in the present invention, the lower end bar 2 of the PC beam 1 is connected to the steel pipe 4
After inserting into the steel pipe 4, mortar is injected into the steel pipe 4.
The periphery of is surrounded by a plurality of heating elements 5 (for example, a chemical heating agent). Further, it is covered with a heat insulating material 6 (Dallas wool or the like) to cure the mortar.
このモルタルの養生は、約12〜24時間くらい行うもので
ある。また、その温度も一様に分布し養生に好適なもの
になる。This mortar is cured for about 12 to 24 hours. Further, the temperature is evenly distributed, which is suitable for curing.
（発明の効果） 以上説明したように、本発明に係る鉄筋の継手方法を、
モルタル充填式鉄筋継手において、モルタルを鋼管内に
注入後、該鋼管の周囲を発熱体で包囲し、更に、断熱材
で被包して前記モルタルを養生し、早期に所要強度の発
現を図ることとしたので、鉄筋継手におけるモルタルの
所要強度の発現が促進され、工期短縮となる。(Effects of the Invention) As described above, the joint method for a reinforcing bar according to the present invention,
In a mortar-filled type rebar joint, after injecting mortar into a steel pipe, surrounding the steel pipe with a heating element, and further encapsulating with a heat insulating material to cure the mortar and achieve the required strength early. As a result, the development of the required strength of the mortar in the reinforcing bar joint is promoted and the construction period is shortened.
しかも、継手の接合も、早期に所要の強度を発現するの
で、振動等の外部の影響による強度低下を来たすことも
ない。In addition, since the required strength is also exhibited in the joining of the joints at an early stage, the strength is not reduced due to external influences such as vibration.
第１図は、本発明の一実施例に係る正面図であり、第２
図は同じく縦断面図である。 １…プレキャストコンクリート梁、２…PC梁の下端筋、
３…スターラップ、４…鋼管、５…発熱体、６…断熱
材。FIG. 1 is a front view according to an embodiment of the present invention.
The figure is also a vertical sectional view. 1 ... Precast concrete beam, 2 ... PC beam lower end bar,
3 ... Star wrap, 4 ... Steel pipe, 5 ... Heating element, 6 ... Insulating material.
Claims (1)
管内に内挿後、該鋼管内にモルタルを注入して硬化させ
て接合する鋼管内モルタル充填式鉄筋継手において、 モルタルを鋼管内に注入後、該鋼管の周囲を発熱体で包
囲し、更に、断熱材で被包して前記モルタルを養生し、
早期に所要強度の発現を図ることを特徴としてなる鉄筋
の継手方法。1. A mortar-filled steel rod joint in a steel pipe in which a reinforcing rod of a precast concrete member is inserted into a steel pipe, and mortar is injected into the steel pipe to cure and join the mortar after the mortar is injected into the steel pipe. Surrounding the steel pipe with a heating element, further encapsulating with a heat insulating material to cure the mortar,
A joint method for reinforcing bars, which is characterized by achieving required strength early.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2178515A JPH0759839B2 (en) | 1990-07-07 | 1990-07-07 | Reinforcing bar joint method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2178515A JPH0759839B2 (en) | 1990-07-07 | 1990-07-07 | Reinforcing bar joint method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0468150A JPH0468150A (en) | 1992-03-03 |
| JPH0759839B2 true JPH0759839B2 (en) | 1995-06-28 |
Family
ID=16049824
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2178515A Expired - Lifetime JPH0759839B2 (en) | 1990-07-07 | 1990-07-07 | Reinforcing bar joint method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0759839B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6368457B2 (en) * | 2013-02-25 | 2018-08-01 | 株式会社竹中工務店 | Precast joint structure |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS534894U (en) * | 1976-06-30 | 1978-01-17 | ||
| JPS58132074A (en) * | 1982-01-29 | 1983-08-06 | Dainippon Jiyochiyuugiku Kk | Preparation of pyrogenic composition |
-
1990
- 1990-07-07 JP JP2178515A patent/JPH0759839B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS534894U (en) * | 1976-06-30 | 1978-01-17 | ||
| JPS58132074A (en) * | 1982-01-29 | 1983-08-06 | Dainippon Jiyochiyuugiku Kk | Preparation of pyrogenic composition |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0468150A (en) | 1992-03-03 |
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