JPH02248543A - Connecting method for precast concrete column - Google Patents
Connecting method for precast concrete columnInfo
- Publication number
- JPH02248543A JPH02248543A JP6607989A JP6607989A JPH02248543A JP H02248543 A JPH02248543 A JP H02248543A JP 6607989 A JP6607989 A JP 6607989A JP 6607989 A JP6607989 A JP 6607989A JP H02248543 A JPH02248543 A JP H02248543A
- Authority
- JP
- Japan
- Prior art keywords
- column
- slab
- mortar
- base
- precast concrete
- 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
Links
- 239000011178 precast concrete Substances 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims description 16
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 36
- 230000002787 reinforcement Effects 0.000 claims abstract description 15
- 239000011440 grout Substances 0.000 abstract description 11
- 239000004567 concrete Substances 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 abstract description 2
- 238000002347 injection Methods 0.000 description 8
- 239000007924 injection Substances 0.000 description 8
- 238000010276 construction Methods 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 2
- 238000009415 formwork Methods 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 239000003566 sealing material Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 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）
本発明はプレキャストコンクリート柱の接合工法に係る
ものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a method for joining precast concrete columns.
（従来の技術）
従来この種の工法においては、柱主筋（ａ）の下端部に
スプライススリーブ（ｂ）が定着され、柱頭部より同柱
主筋（ａ）が突出されたプレキャストコンクリート柱（
Ａ）を使用し、スラブ（Ｂ）上に敷モルタル（Ｃ）を設
置し、その上に前記プレキャストコンクリート柱（＾）
を同柱のスプライススリーブ（ｂ）に下階柱の柱主筋（
ａ′）の上端突出端部が嵌入するように建込み、同柱の
スプライススリーブ（ｂ）に前記柱（Ａ）に設けた注入
孔よりモルタルを注入する敷モルタル方式（第８図及び
第９図参照）か、スラブ（Ｂ）上に敷設されたベースモ
ルタル（ｄ）上にプレキャストコンクリート柱（Ａ）を
建込み、同柱（Ａ）とスラブ（Ｂ）との間隙外周縁を周
辺シール材（ｅ）で填隙し、間隙に高強度モルタルをグ
ラウトするグラウト方式が採用されている。（第１０図
参照）図中（ｆ）（２）は前記スプライススリーブ（ロ
）のグラウト注入孔及、び排出孔、（ｈ）（ｇ）は前記
シール材（ｅ）の注入孔及び排出孔である。(Prior art) Conventionally, in this type of construction method, a splice sleeve (b) is fixed to the lower end of a column main reinforcement (a), and a precast concrete column (a) with the column main reinforcement (a) protruding from the column head (
A), install mortar (C) on the slab (B), and place the precast concrete column (^) on top of it.
Attach the main column reinforcement of the lower floor column to the splice sleeve (b) of the same column (
The mortar method (Figs. 8 and 9) in which mortar is injected into the splice sleeve (b) of the same pillar through the injection hole provided in the pillar (A) is installed so that the upper protruding end of the pillar (a') fits in. (see figure) or erect a precast concrete column (A) on the base mortar (d) laid on the slab (B), and seal the outer edge of the gap between the column (A) and the slab (B) with surrounding sealing material. A grouting method is adopted in which the gaps are filled in step (e) and high-strength mortar is grouted into the gaps. (See Figure 10) In the figure, (f) and (2) indicate the grout injection hole and the discharge hole of the splice sleeve (b), and (h) and (g) indicate the injection hole and the discharge hole of the sealing material (e). It is.
（発明が解決しよ°うとする課題）
しかしながら前記従来の敷モルタル方式では、プレキャ
ストコンクリート柱とスラブとの間に間隙が生じる等、
施工上の欠陥が生じ易いため、設計上、軸力の大きい柱
には採用出来ないという欠点があった。(Problems to be Solved by the Invention) However, with the conventional mortar method, there are problems such as gaps between the precast concrete column and the slab.
Due to the tendency for construction defects to occur, there was a drawback in that it could not be used for columns with large axial forces due to the design.
また前記従来のグラウト方式は、プレキャストコンクリ
ート柱とスラブとの間隔ｔを２０ｍ以上とするのが一般
的であり、グラウト材を多く必要とし、また柱、スラブ
間の隙間が大きいため、柱周辺のシール方法が面倒であ
った。In addition, in the conventional grouting method, the distance t between the precast concrete column and the slab is generally 20 m or more, which requires a large amount of grout, and the gap between the column and slab is large, so The sealing method was troublesome.
更に施工に際して敷モルタルや填隙用グラウト材が逆流
しないように、接合しようとする社主筋（ａ′）にゴム
製のワッシャー（ｊ）を取付けて、社主筋の接合用スプ
ライススリーブとは別々にグラウトする方法が一般であ
った。Furthermore, to prevent the mortar and gap-filling grout from flowing back during construction, attach a rubber washer (j) to the main reinforcement (a') to be joined, and separate it from the splice sleeve for joining the main reinforcement. The most common method was grouting.
本発明は前記従来技術の有する問題点に鑑みて提案され
たもので、その目的とする処は、プレキャスト鉄筋コン
クリート造の柱の接合が簡便に行なわれ、応力の伝達に
対する信鯨性が向上され、高軸力柱でもプレキャスト化
が可能なプレキャストコンクリート柱の接合工法を提供
する点にある。The present invention has been proposed in view of the problems of the prior art, and its purpose is to facilitate the joining of precast reinforced concrete columns, improve stability against stress transmission, and The object of the present invention is to provide a method for joining precast concrete columns that can be precast even for columns with high axial strength.
（課題を解決するための手段）
前記の目的を達成するため、本発明に係るプレキャスト
コンクリート柱の接合工法は、スラブ上にベースモルタ
ルを設置し、次いで下端部にスプライススリーブが定着
された社主筋が柱頭部より突出され、且つ柱脚部外周縁
に沿って欠き込み部が欠截されたプレキャストコンクリ
ート柱を、間柱のスプライススリーブに前記スラブ上に
突出する下階柱の柱主筋上端部が嵌入するように建込む
とともに、前記ベースモルタル上に着座させ、次いで前
記柱脚部の欠き込み部とスラブとの間隙にモルタルを填
装したのち、前記スプライススリーブ及び前記スラブと
柱脚部との間隙に亘って同時にグラウトするように構成
されている。(Means for Solving the Problems) In order to achieve the above object, the precast concrete column joining method according to the present invention involves installing a base mortar on a slab, and then attaching a main reinforcement with a splice sleeve fixed to the lower end. The upper end of the column main bar of the lower floor column that protrudes above the slab is inserted into the splice sleeve of the stud, and the precast concrete column has a precast concrete column that protrudes from the column head and has a notch cut out along the outer periphery of the column base. The slab is placed on the base mortar, and the gap between the notch in the column base and the slab is filled with mortar, and then the gap between the splice sleeve and the slab and the column base is filled with mortar. The structure is configured to simultaneously grout the entire area.
（作用）
本発明によれば前記したように、プレキャストコンクリ
ート柱の柱脚部外周縁に沿って欠き込み部が欠截されて
いるので、前記柱をスラブ上に建込んだのち、前記欠き
込み部とスラブ面との間に形成された間隙を利用して、
型枠等を必要とすることなく簡単にモルタルを充填する
ことができる。(Function) According to the present invention, as described above, the notch is cut out along the outer periphery of the column base of the precast concrete column, so after the column is built on a slab, the notch is cut out. Utilizing the gap formed between the section and the slab surface,
Mortar can be easily filled without requiring a formwork or the like.
而して同充填モルタルが硬化したのち、前記プレキャス
トコンクリート柱のスプライススリーブにモルタルをグ
ラウトすると、同モルタルは前記柱とスラブとの間隙に
密実に填隙されると同時に、スプライススリーブに填充
され、上下のプレキャストコンクリート柱が一体に接合
される。After the filled mortar has hardened, when the mortar is grouted into the splice sleeve of the precast concrete column, the mortar is densely filled into the gap between the column and the slab, and at the same time, the splice sleeve is filled, The upper and lower precast concrete columns are joined together.
（実施例） 以下本発明を図示の実施例について説明する。(Example) The present invention will be described below with reference to the illustrated embodiments.
（１）はプレキャストコンクリート柱、（２）は柱主筋
で、その下端部にはスプライススリーブ（３）が定着さ
れ、柱主筋（２）上端部は柱頭部より突出している。(1) is a precast concrete column, (2) is a column main reinforcement, a splice sleeve (3) is fixed to the lower end thereof, and the upper end of the column main reinforcement (2) protrudes from the column head.
図中（４）及び（５）は前記柱（１）に設けられ、スプ
ライススリーブ（３）に連通ずるグラウト注入孔並に排
出孔である。In the figure, (4) and (5) are grout injection holes and discharge holes provided in the pillar (1) and communicating with the splice sleeve (3).
更に前記柱（１）の柱脚部外周縁に沿って２０〜２５腑
角の欠き込み部（６）が欠截されている。Furthermore, a notch (6) of 20 to 25 angles is cut out along the outer peripheral edge of the column base of the column (1).
而してスラブ（７）上における下階柱からの柱主筋（２
′）の突出部の中心位置に、且状のレベルモルタル（８
）を設置する。（第１図参照）
次いで前記柱（１）をスラブ（７）上に、下階柱の社主
筋（２′）がスプライススリーブ（４）に嵌入するとと
もに、ベースモルタル（８）上に着座するように建込み
、前記柱（１）の欠き込み部（６）とスラブ（７）との
間隙に樹脂入りモルタル（９）を充填する。（第２図参
照）この際、スラブ（７）と前記柱（１）との間隙は１
０＋＋ｎ程度であり、欠き込み部（６）は２０〜２５ｍ
ｍ角であるため、前記モルタル（９）の充填に当っては
特に型枠等を必要とせず、簡単に充填作業が行なわれる
ので、左官工以外のものでも施工が可能である。Therefore, the column main reinforcement (2) from the lower floor column on the slab (7)
’) at the center of the protruding part, place a level mortar (8
). (See Figure 1) Next, the column (1) is placed on the slab (7), the main reinforcement (2') of the lower column is fitted into the splice sleeve (4), and is seated on the base mortar (8). Then, the gap between the notch (6) of the pillar (1) and the slab (7) is filled with resin-filled mortar (9). (See Figure 2) At this time, the gap between the slab (7) and the pillar (1) is 1
It is about 0++n, and the notch part (6) is 20 to 25 m.
Since the mortar (9) is m square, no formwork or the like is particularly required for filling the mortar (9), and the filling work can be easily carried out, so construction can be carried out by someone other than plastering.
なお前記柱（１）の下底面中央には截頭角錐状の凹窩（
１０）を設け、截頭角錐状のベースモルタル（８）上に
嵌合することによって、柱芯の位置決めが容易に行なわ
れるようにするものである。（第５図参照）
前記柱脚部周辺のモルタル（９）が硬化したのち、いず
れか１個所のスプライススリーブ（３）のグラウト注入
孔（４）から無収縮モルタル（１１）を連続的に圧入す
る。（第３図参照）
このとき前記スプライススリーブ（３）のグラウト注入
孔（４）及び排出孔（５）をすべて開放する。In addition, in the center of the lower base of the pillar (1) is a truncated pyramid-shaped concave hole (
10) is provided and fitted onto the truncated pyramid-shaped base mortar (8), thereby making it possible to easily position the column core. (See Figure 5) After the mortar (9) around the column base has hardened, non-shrinkage mortar (11) is continuously press-fitted through the grout injection hole (4) of the splice sleeve (3) at one location. do. (See Figure 3) At this time, all of the grout injection hole (4) and discharge hole (5) of the splice sleeve (3) are opened.
前記グラウト注入孔（４）からグラウトした無収縮モル
タル（１１）は、先ず前記柱（１）の柱脚部下面とスラ
ブ（７）との間に充填される。しかるのちすべてのスプ
ライススリーブ（３）の下部のグラウト注入孔（４）か
らモルタルが流出したことを確認して、ゴム製の栓を施
す。Non-shrinkage mortar (11) grouted from the grout injection hole (4) is first filled between the lower surface of the column base of the column (1) and the slab (7). Then, after confirming that the mortar has flowed out from the grout injection holes (4) at the bottom of all splice sleeves (3), rubber plugs are applied.
なおモルタルの圧入を続け、すべてのスプライススリー
ブ（３）の上部の排出孔（５）からモルタルが流れ出し
たことを確認してゴム製の栓を施し、全工程を完了する
。（第４図参照）
（発明の効果）
このように本発明によれば、下端にスプライススリーブ
が定着された柱主筋の上端部が柱頭部より突出されたプ
レキャストコンクリート柱の接合工法において、間柱の
柱脚部外周縁に沿って欠き込み部を欠截し、前記柱をス
ラブ上の所定位置に建込んだのち、前記欠き込み部とス
ラブ面との間隙にモルタルを填装したのち、前記スラブ
と柱脚部との間隙とスプライススリーブとに同時にグラ
ウトすることによって、プレキャストコンクリート柱を
接合することによって、同間隙のシールが簡単に行なわ
れ、前記プレキャストコンクリート柱が簡単に、しかも
確実に接合され、応力の伝達に対する信鯨性が向上され
る。この結果複合構造や高層鉄筋コンクリート造のよう
な高軸力柱でも設計が可能となり、従来の設計よりも柱
断面を節減することができる。The mortar continues to be press-fitted, and after confirming that the mortar has flowed out from the discharge holes (5) at the top of all splice sleeves (3), rubber plugs are applied to complete the entire process. (See Figure 4) (Effects of the Invention) As described above, according to the present invention, in the method of joining precast concrete columns in which the upper end of the column main reinforcement with the splice sleeve fixed to the lower end protrudes from the column head, the stud After cutting out a notch along the outer periphery of the column base and erecting the column at a predetermined position on the slab, filling the gap between the notch and the slab surface with mortar, By simultaneously grouting the gap between the column base and the splice sleeve, the gap can be easily sealed by joining the precast concrete column, and the precast concrete column can be easily and reliably bonded. , reliability for stress transmission is improved. As a result, it is possible to design columns with high axial force such as composite structures and high-rise reinforced concrete structures, and the column cross section can be reduced compared to conventional designs.
第１図乃至第４図は本発明に係るプレキャストコンクリ
ート柱の接合工法の一実施例の工程を示す縦断面図、第
５図は第２図の詳細を示す縦断面図、第６図はプレキャ
ストコンクリート柱の柱脚部を示す斜視図、第７図は第
６図の部分■の拡大図、第８図及び第９図は従来工法の
一例の工程を示す縦断面図、第１０図は従来工法の他の
例の実施状況を示す縦断面図である。
（１）・・・プレキャストコンクリート柱、（２）（２
’）−・−柱主筋、 （３）−・−スプライススリー
ブ、（６）−一欠き込み部、
（８）−一ベースモルタル、
（７）−ｍ−スラブ、
（９）−ｍ−モルタル、
（１１）−無収縮モルタル。
第１図
代理人 弁理士 岡 本 重 文
外２名
第８図
第９図
第１０図Figures 1 to 4 are longitudinal sectional views showing steps of an embodiment of the precast concrete column joining method according to the present invention, Figure 5 is a longitudinal sectional view showing details of Figure 2, and Figure 6 is a precast concrete column joining method. A perspective view showing the column base of a concrete column, Fig. 7 is an enlarged view of part ① in Fig. 6, Figs. 8 and 9 are longitudinal cross-sectional views showing an example of the process of a conventional construction method, and Fig. 10 is a conventional construction method. It is a longitudinal cross-sectional view showing the implementation status of another example of the construction method. (1)...Precast concrete column, (2) (2
')--Column main reinforcement, (3)--Splice sleeve, (6)-One notch, (8)-One base mortar, (7)-M-Slab, (9)-M-Mortar, (11) - Non-shrinking mortar. Figure 1 Agent Patent attorney Shige Okamoto 2 people Figure 8 Figure 9 Figure 10
Claims (1)
プライススリーブが定着された柱主筋が柱頭部より突出
され、且つ柱脚部外周縁に沿って欠き込み部が欠截され
たプレキャストコンクリート柱を、同柱のスプライスス
リーブに前記スラブ上に突出する下階柱の柱主筋上端部
が嵌入するように建込むとともに、前記ベースモルタル
上に着座させ、次いで前記柱脚部の欠き込み部とスラブ
との間隙にモルタルを填装したのち、前記スプライスス
リーブ及び前記スラブと柱脚部との間隙に亘って同時に
グラウトすることを特徴とするプレキャストコンクリー
ト柱の接合工法。A base mortar is installed on the slab, and then a precast concrete column is constructed, in which the column main reinforcement with the splice sleeve fixed to the lower end protrudes from the column head, and a notch is cut out along the outer periphery of the column base. The upper end of the column main bar of the lower floor column that protrudes above the slab is fitted into the splice sleeve of the same column, and the column is seated on the base mortar, and then the notch of the column base and the slab are erected. A method for joining precast concrete columns, characterized in that after filling the gap with mortar, grouting is simultaneously performed across the gap between the splice sleeve and the slab and the column base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6607989A JPH02248543A (en) | 1989-03-20 | 1989-03-20 | Connecting method for precast concrete column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6607989A JPH02248543A (en) | 1989-03-20 | 1989-03-20 | Connecting method for precast concrete column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02248543A true JPH02248543A (en) | 1990-10-04 |
Family
ID=13305487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6607989A Pending JPH02248543A (en) | 1989-03-20 | 1989-03-20 | Connecting method for precast concrete column |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02248543A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100402660B1 (en) * | 2000-04-12 | 2003-10-22 | 삼성물산 주식회사 | Precast concrete column for multi-stories |
| JP2020133158A (en) * | 2019-02-15 | 2020-08-31 | 清水建設株式会社 | Method of bonding precast concrete column |
| JP2023012535A (en) * | 2019-02-15 | 2023-01-25 | 清水建設株式会社 | Method of joining precast concrete column |
-
1989
- 1989-03-20 JP JP6607989A patent/JPH02248543A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100402660B1 (en) * | 2000-04-12 | 2003-10-22 | 삼성물산 주식회사 | Precast concrete column for multi-stories |
| JP2020133158A (en) * | 2019-02-15 | 2020-08-31 | 清水建設株式会社 | Method of bonding precast concrete column |
| JP2023012535A (en) * | 2019-02-15 | 2023-01-25 | 清水建設株式会社 | Method of joining precast concrete column |
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