JPH03144041A - Bonding method of precast concrete member - Google Patents
Bonding method of precast concrete memberInfo
- Publication number
- JPH03144041A JPH03144041A JP1281894A JP28189489A JPH03144041A JP H03144041 A JPH03144041 A JP H03144041A JP 1281894 A JP1281894 A JP 1281894A JP 28189489 A JP28189489 A JP 28189489A JP H03144041 A JPH03144041 A JP H03144041A
- Authority
- JP
- Japan
- Prior art keywords
- mortar
- precast concrete
- grout
- column member
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims description 18
- 239000011178 precast concrete Substances 0.000 title claims description 15
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 49
- 239000011440 grout Substances 0.000 claims abstract description 21
- 230000003014 reinforcing effect Effects 0.000 claims description 14
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 5
- 238000009415 formwork Methods 0.000 description 7
- 238000007796 conventional method Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
Landscapes
- Joining Of Building Structures In Genera (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、上下一対のプレキャストコンクリート部材を
上方部材の下端部に埋設されているモルタル充填式鉄筋
継手スリーブを利用して接合するプレキャストコンクリ
ート部材の接合方法の改良に関するものである。Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a precast concrete member for joining a pair of upper and lower precast concrete members using a mortar-filled reinforcing joint sleeve embedded in the lower end of the upper member. This invention relates to an improvement in the joining method.
（従来の技術）
上下一対のプレキャストコンクリート部材（以下９０部
材と記す）を上方部材の下端部に埋設されているモルタ
ル充填式鉄筋継手スリーブ（以下モルタルスリーブと記
す）を利用して接合するＰＣ部材の接合方法を、ＰＣ部
材としてプレキャストコンクリート柱部材（以下ＰＣ柱
部材と記す）を例にとり以下に説明する。(Prior art) A PC member in which a pair of upper and lower precast concrete members (hereinafter referred to as 90 members) are joined using a mortar-filled reinforcing bar joint sleeve (hereinafter referred to as mortar sleeve) buried in the lower end of the upper member. The joining method will be explained below using a precast concrete column member (hereinafter referred to as PC column member) as an example of a PC member.
まず、この方法に使用されるＰＣ柱部材は第３図に示す
ような構造のものである。すなわち図において、１−ｂ
は下方ＰＣ柱部材であって、下方株主鉄筋３−ｂの上端
部は下方ＰＣ柱部材の上端面２−ｂから上方にある長さ
突き出て露出している。上方ＰＣ柱部材１−ａの下端部
にはモルタルスリーブ４が埋設されていて該スリーブの
下端口は上方ＰＣ柱部材の下端面２−ａに開口している
。上方性主鉄筋３−ａの下端部はモルタルスリーブ内に
挿入されており、その下端部はモルタルスリーブ４の長
手方向はぼ中央に達している。First, the PC column member used in this method has a structure as shown in FIG. In other words, in the figure, 1-b
is a lower PC column member, and the upper end portion of the lower shareholder reinforcing bar 3-b projects a certain length upward from the upper end surface 2-b of the lower PC column member and is exposed. A mortar sleeve 4 is embedded in the lower end of the upper PC column member 1-a, and the lower end opening of the sleeve opens to the lower end surface 2-a of the upper PC column member. The lower end of the upward main reinforcing bar 3-a is inserted into the mortar sleeve, and the lower end reaches approximately the center of the mortar sleeve 4 in the longitudinal direction.
モルタルスリーブは、両端が開口している細長い中空金
属筒であってその内面には通常多数の溝または突起が設
けられており、その代表的なものは特公昭５３−１２７
３２号公報、特開昭６１−２００２４６号公報等に開示
されている。そして該スリーブにはグラウト注入口およ
び抜気口が設けられていて、これらは上方ＰＣ柱部材の
側壁に設けられている注入口５および抜気口６にそれぞ
れ連なっていてこれによりスリーブは外部に連通してい
る。A mortar sleeve is an elongated hollow metal cylinder with both ends open, and its inner surface is usually provided with many grooves or protrusions.
It is disclosed in Japanese Patent Application Laid-Open No. 61-200246, etc. The sleeve is provided with a grout inlet and an air vent, which are connected to an inlet 5 and an air vent 6, respectively, provided on the side wall of the upper PC pillar member, so that the sleeve is exposed to the outside. It's communicating.
これらＰＣ柱部材の接合は従来法のようにし行われてき
た。すなわち、第４図に示すように下方ＰＣ柱部材１−
ｂをまず建て入れ、ついでその上方より上方ＰＣ柱部材
１−ａを垂下し、下方株主鉄筋の突出端がそれぞれ対応
する位置のモルタルスリーブ内に挿入されるように上方
ＰＣ柱部材を建て入れる。この建て入れが終ったとき上
方性主鉄筋３−ａと下方株主鉄筋３−ｂとはモルタルス
リーブ内の長手方向はぼ中央において突きあわせ状にあ
い会する。ついでグラウト注入口５から流動性の大きな
モルタルであるグラウト７をそれが抜気口６から溢れ出
るまで注入する。グラウトの硬化により対応する上下一
対の上下柱主鉄筋が接合され、これにより上下−対のＰ
Ｃ柱部材が接合される。These PC column members have been joined using conventional methods. That is, as shown in FIG. 4, the lower PC column member 1-
b is first erected, and then the upper PC column member 1-a is suspended from above, and the upper PC column member is erected so that the protruding ends of the lower shareholder reinforcing bars are inserted into the mortar sleeves at corresponding positions. When this erection is completed, the upward main reinforcing bars 3-a and the lower shareholder reinforcing bars 3-b abut against each other at approximately the center in the longitudinal direction within the mortar sleeve. Next, grout 7, which is highly fluid mortar, is injected from the grout inlet 5 until it overflows from the air vent 6. As the grout hardens, the corresponding pair of upper and lower column main reinforcing bars are joined, and this causes the upper and lower pair of P
The C pillar members are joined.
ところで、接合される上下一対のＰＣ柱部材の接合端面
間には接合部材の一体化、接合施工誤差の吸収等の目的
で目地モルタル８を設ける必要がある。このため接合に
当ってこの接合端面間に目地空間が形成されるような手
段が設けられこの目地空間内に目地モルタルが設けられ
る。かかる目地空間形成手段としては、図に示すように
目地厚に相当する高さのライナー９を下方ＰＣ柱部材上
端面２−ｂの上に置いたり、ＰＣ柱部材端面に目地厚に
相当する高さの突起（コターという）を設ける手段があ
る。Incidentally, it is necessary to provide joint mortar 8 between the joining end faces of the pair of upper and lower PC column members to be joined, for the purpose of integrating the joining members, absorbing errors in joining construction, etc. For this reason, a means is provided to form a joint space between the joint end faces during joining, and a joint mortar is provided within this joint space. Such joint space forming means may include placing a liner 9 with a height corresponding to the joint thickness on the upper end surface 2-b of the lower PC column member as shown in the figure, or placing a liner 9 with a height equivalent to the joint thickness on the end surface of the PC column member. There is a means to provide a protrusion (called a cotter).
目地モルタルを設けるには、下方ＰＣ柱部材上端面２−
ｂ上に硬練りモルタル塊を盛り上げて置きこれが上方Ｐ
Ｃ柱部材の垂下に伴い接合端面間に挟まれて目地空間内
に押し広げられて目地空間を形成する方式が行われてい
る。この際目地モルタルがモルタルスリーブ４内に侵入
してこのスリーブのグラウト注入口を塞ぐトラブルを防
止するためワッシャーと称する薄肉円板よりなる部品１
０を用いモルタルスリーブ４の下端口を塞ぐことが必要
になる。（ワッシャーについては特公昭５５−１９３３
８号公報に開示されている。）
（発明が解決しようとする問題点）
従来の方法は前記のように、目地モルタルを形成させる
に当り硬練りモルタル塊を押し潰して広がらせる手段を
とっているが、硬練りモルタルは流動性に乏しいので目
地空間内に充分に行き渡らず空隙を生じ易く接合された
ＰＣ柱部材間の軸力の均等な伝達上問題がある。また、
モルタルスリーブ内のグラウトと目地モルタルとの品質
が異なる点も問題である。（通常、目地モルタルの方が
低品質である）
目地空間外周に型枠を設けこの中に軟練りモルタルを充
填して空隙のない目地モルタルを一旦形成したうえで上
方ＰＣ柱部材を建て入れる方式も提案されているが、こ
の方式では型枠化および型枠施工費がかさみ経済的に不
利であるだけでなく目地モルタルの施工および硬化のた
めに少なくとも一日工程の進行が遅れる不利も生ずる。To provide joint mortar, lower PC column member upper end surface 2-
Place the hard kneaded mortar mass on top of b, and this is the upper part of P.
A method is used in which, as the C-column member hangs down, it is sandwiched between joint end faces and expanded into the joint space to form a joint space. At this time, in order to prevent the trouble of joint mortar entering the mortar sleeve 4 and blocking the grout inlet of this sleeve, a part 1 consisting of a thin disk called a washer
It is necessary to close the lower end opening of the mortar sleeve 4 using 0. (For washers, special
It is disclosed in Publication No. 8. ) (Problems to be solved by the invention) As mentioned above, in the conventional method, when forming joint mortar, the hard kneaded mortar mass is crushed and spread, but the hard kneaded mortar is fluid. Since the axial force is insufficient, the axial force is not sufficiently distributed within the joint space, and gaps are likely to occur, causing problems in the uniform transmission of axial force between the joined PC column members. Also,
Another problem is that the quality of the grout in the mortar sleeve and the joint mortar are different. (Typically, joint mortar is of lower quality) A method in which a formwork is placed around the outer periphery of the joint space, and soft mortar is filled into it to form joint mortar without voids, and then the upper PC pillar members are erected. has also been proposed, but this method is not only economically disadvantageous due to the increased cost of formwork and formwork construction, but also has the disadvantage that the progress of the process is delayed by at least one day due to the construction and curing of the joint mortar.
さらに、軟練りモルタルの品質は硬練りモルタルの品質
よりも劣るので上記のスリーブ内のグラウトと目地モル
タルとの品質不同の問題点が一層大きくなる。Furthermore, since the quality of soft mortar is inferior to that of hard mortar, the problem of the disparity in quality between the grout in the sleeve and the joint mortar becomes even more serious.
本発明は従来技術におけるこのような問題点を解決する
ために提案されたものであり、以下にこれを詳述する。The present invention was proposed to solve these problems in the prior art, and will be described in detail below.
（問題点を解決するための手段）
本発明の方法に使用される上下一対の２０部材の構造は
、第３図に示したような従来の方法に使用されるものと
同一である。そして、本発明の方法をＰＣ柱部材の接合
を例にとり以下に説明する。(Means for Solving the Problems) The structure of the pair of upper and lower 20 members used in the method of the present invention is the same as that used in the conventional method as shown in FIG. The method of the present invention will be explained below by taking as an example the joining of PC pillar members.
まず下方ＰＣ柱部材ｔ−ｂを建て入れた後、その上端面
２−ｂ上にその周辺に沿ってその内側に該周辺を縁取る
ようにモルタル枠１１を硬練りモルタルをもって形成さ
せる。この際、従来の方を去と同様にして目地空間を形
成させるための手段（ライナー、コツクー等）がとられ
る。モルタル枠１１の幅は通常ｌ〜３ｃｍ程度であり高
さは目を也厚とほぼ同じである。First, after the lower PC column member t-b is erected, a mortar frame 11 is formed using hardened mortar on the upper end surface 2-b of the lower PC pillar member t-b so as to border the periphery inside the upper end surface 2-b. At this time, means (liner, cotcoo, etc.) are taken to form a joint space in the same way as in the past. The width of the mortar frame 11 is usually about 1 to 3 cm, and the height is approximately the same as the width.
ついで第２図に示すように上方ＰＣ柱部材１−ａを垂下
させて従来の方法と同様にしてこれを下方柱部材１−ｂ
に建て入れる。Next, as shown in FIG. 2, the upper PC pillar member 1-a is suspended and is attached to the lower PC pillar member 1-b in the same manner as in the conventional method.
to be built.
つぎに、上方ＰＣ柱部材に設けられているグラウト注入
口５よりグラウト７を注入し、目地空間およびモルタル
スリーブ４内をすべてグラウトで充填する。（これはグ
ラウト注入を上方ＰＣ柱部材に設けられている抜気口６
から溢れ出るまで続けることのより達成できる。）そし
て、グラウトの硬化により上下一対のＰ柱部材の接合が
完了する。Next, grout 7 is injected through the grout inlet 5 provided in the upper PC pillar member, and the joint space and the inside of the mortar sleeve 4 are all filled with grout. (This is to prevent grout injection from the air vent 6 provided in the upper PC pillar member.)
It can be achieved by continuing until it overflows. ) Then, the grout hardens to complete the joining of the pair of upper and lower P pillar members.
以上２０部材としてＰＣ柱部材を例として本発明の詳細
な説明したが、本発明の方法は、同様の構造のＰＣ壁部
材どうしの接合、その他、同様の構造の２０部材どうし
の接合にも実施できることはいうまでもない。Although the present invention has been described in detail using PC column members as an example of the 20 members, the method of the present invention can also be applied to joining PC wall members with similar structures, as well as joining 20 members with similar structures. It goes without saying that it can be done.
（発明の効果） 本発明の方法は従来の方法にくらべ次の利点がある。(Effect of the invention) The method of the present invention has the following advantages over conventional methods.
（１）空隙のない目地が形成されるので接合されたＰＣ
部材間の軸力伝達が均一である（２）目地モルタルとモ
ルタルスリーブ内のグラウトとの品質が同一であるので
この品質不同に基く問題点がない
（３）ワッシャーの使用が不要である
さらに、目地空間外周に型枠を設ける前記の方法にくら
べ、工程の進行が少なくとも一日遅れる不利な点がない
、また、本発明においては、型枠は硬練りモルタルによ
りその現場で作成するわけであるから型枠化および型枠
施工費は前記の方法にくらべ僅小ですむ。(1) PCs are joined because joints with no voids are formed.
The axial force transmission between the members is uniform. (2) The quality of the joint mortar and the grout in the mortar sleeve are the same, so there are no problems due to disparity in quality. (3) There is no need to use washers. Compared to the above-mentioned method of providing a formwork around the outer periphery of the joint space, there is no disadvantage that the progress of the process is delayed by at least one day.Furthermore, in the present invention, the formwork is created on-site using hard-mixed mortar. The cost of formwork and formwork construction is much lower than that of the above-mentioned method.
第１図および第２図は本発明の方法の実施状況を示す図
である。第３図および第４図は従来の方法の実施状況を
示す図である。
図における記号は以下のとおりである。
Ｌ−ａ・上方ＰＣ柱部材 １−ｂ 下方ＰＣ柱部村２
−ａ、上方ＰＣ柱部材の下端面
２−ｂ二下方ｐｃ柱部材の上端面
３−ａ；上方株主鉄筋 ３−ｂ＝下方柱主鉄筋４、モ
ルタルスリーブ ５・グラウト注入口６：抜気口
７・グラウト
８：目地モルタル ９ニライナー
ｌＯ：ワッシャ−１１−モルタル枠1 and 2 are diagrams illustrating the implementation of the method of the invention. FIGS. 3 and 4 are diagrams showing the implementation status of the conventional method. The symbols in the figure are as follows. La-a Upper PC column member 1-b Lower PC column village 2
-a, lower end surface of upper PC column member 2-b; upper end surface of lower PC column member 3-a; upper shareholder reinforcing bar 3-b = lower column main reinforcing bar 4, mortar sleeve 5, grout inlet 6: vent port
7. Grout 8: Joint mortar 9 Niliner lO: Washer - 11 - Mortar frame
Claims (1)
レキャストコンクリート部材の下端部に埋設されている
モルタル充填式鉄筋継手スリーブを利用して接合するプ
レキャストコンクリート部材の接合方法において、 （イ）建て入れされた下方プレキャストコンクリート部
材１−ｂの上端面２−ｂ上にこの周辺の内側に沿ってこ
れを縁取るようなモルタル枠１１を硬練りモルタルをも
って形成させ （ロ）ついで、上方プレキャストコンクリート部材１−
ａを垂下して、下方プレキャストコンクリート部材の上
端面２−ｂから上方に突き出てある長さ露出している下
方部材主鉄筋３−ｂの突出端を、上方プレキャストコン
クリート部材１−ａの下端部に埋設されかつ該部材１−
ａの下端面２−ａに開口しているモルタル充填式鉄筋継
手スリーブ４内に挿入する如く、かつ前記両端面２−ａ
および２−ｂ間に目地空間が形成される如く上方プレキ
ャストコンクリート部材を下方プレキャストコンクリー
ト部材に対して建て入れ （ハ）上方プレキャストコンクリート部材の側面に設け
られているグラウト注入口５よりグラウト７を注入し、
目地空間およびモルタル充填式鉄筋継手スリーブ内をグ
ラウトで充填する ことを特徴とするプレキャストコンクリート部材の接合
方法[Scope of Claims] 1. A method for joining precast concrete members in which a pair of upper and lower precast concrete members are joined using a mortar-filled reinforcing joint sleeve buried in the lower end of the upper precast concrete member, comprising (a) A mortar frame 11 is formed using hardened mortar on the upper end surface 2-b of the inserted lower precast concrete member 1-b along the inner side of the periphery (b). 1-
a, and the protruding end of the lower member main reinforcing bar 3-b, which is exposed for a certain length and projects upward from the upper end surface 2-b of the lower precast concrete member, is connected to the lower end of the upper precast concrete member 1-a. embedded in the member 1-
so as to be inserted into the mortar-filled reinforcing bar joint sleeve 4 that is open at the lower end surface 2-a of a, and both end surfaces 2-a.
and erect the upper precast concrete member to the lower precast concrete member so that a joint space is formed between 2-b. (c) Inject grout 7 from the grout injection port 5 provided on the side of the upper precast concrete member. death,
A method for joining precast concrete members, characterized by filling the joint space and the inside of a mortar-filled reinforcing joint sleeve with grout.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1281894A JP2729683B2 (en) | 1989-10-31 | 1989-10-31 | Precast concrete member joining method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1281894A JP2729683B2 (en) | 1989-10-31 | 1989-10-31 | Precast concrete member joining method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03144041A true JPH03144041A (en) | 1991-06-19 |
| JP2729683B2 JP2729683B2 (en) | 1998-03-18 |
Family
ID=17645445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1281894A Expired - Lifetime JP2729683B2 (en) | 1989-10-31 | 1989-10-31 | Precast concrete member joining method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2729683B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006200271A (en) * | 2005-01-21 | 2006-08-03 | Ohbayashi Corp | Joining structure and joining method |
| CN112211319A (en) * | 2020-10-13 | 2021-01-12 | 上海城建市政工程（集团）有限公司 | Same-layer grouting method for mounting prefabricated shear wall of fabricated building |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101495039B1 (en) | 2013-08-26 | 2015-02-25 | 김영구 | A constructing method of structure using sandwich PC-wall |
| JP7486992B2 (en) | 2020-03-27 | 2024-05-20 | 清水建設株式会社 | Pillar structure |
-
1989
- 1989-10-31 JP JP1281894A patent/JP2729683B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006200271A (en) * | 2005-01-21 | 2006-08-03 | Ohbayashi Corp | Joining structure and joining method |
| JP4677792B2 (en) * | 2005-01-21 | 2011-04-27 | 株式会社大林組 | Joining structure and joining method |
| CN112211319A (en) * | 2020-10-13 | 2021-01-12 | 上海城建市政工程（集团）有限公司 | Same-layer grouting method for mounting prefabricated shear wall of fabricated building |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2729683B2 (en) | 1998-03-18 |
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