JP2800118B2 - Orthogonal joining method of precast concrete wall members - Google Patents
Orthogonal joining method of precast concrete wall membersInfo
- Publication number
- JP2800118B2 JP2800118B2 JP62328405A JP32840587A JP2800118B2 JP 2800118 B2 JP2800118 B2 JP 2800118B2 JP 62328405 A JP62328405 A JP 62328405A JP 32840587 A JP32840587 A JP 32840587A JP 2800118 B2 JP2800118 B2 JP 2800118B2
- Authority
- JP
- Japan
- Prior art keywords
- wall members
- sleeve
- built
- precast concrete
- post
- 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 - Fee Related
Links
Landscapes
- Load-Bearing And Curtain Walls (AREA)
- Joining Of Building Structures In Genera (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壁部材どうしを
その端において本質的に当接状態で互いに直角方向に接
合する方法に関するものであり、直交接合に供される端
部を特殊な構成としたプレキャストコンクリート壁部材
を使用することを特徴とするものである。
(従来の技術)
プレキャストコンクリート板(以下PC板と記す)を床
部材および壁部材として相互に接合して建物の躯体を構
築する壁式プレハブ工法は広く実施されており、PC壁部
材どうしを互いに直角方向に接合する直交接合工事は普
遍的に実施されている接合工事である。
従来実施されているPC壁部材の直交接合工事を第8図
により説明する。まず1組のPC壁部材18および19を互い
に直角方向にかつその端において取り合い部25が存在す
るよう建て入れる。接合に供される端面20および21から
は該端面に垂直に多数の連結用鉄筋(ひげ筋といわれ
る)22および23が突き出ており、上記建て入れが終ると
対応するひげ筋どうしが直角に交叉する。この交差点に
おいて対応するひげ筋どうしを溶接し1組の壁部材どう
しを連結する。この際一般には、交叉したひげ筋群に鉛
直方向に補強用鉄筋(増し筋という)24を添え、これと
一緒に溶接することにより連結部を補強することが行な
われている。ついで、取り合い部25の周囲に型枠26を組
立てコンクリート(ジョイントコンクリートという)を
打設し、コンクリートが所定強度に達したのち型枠を取
り外してここの1組のPC壁部材の直交接合が完成する。
(発明が解決しようとする問題点)
上述のように従来のPC壁部材の直交接合工事において
は溶接工事とジョイントコンクリート打設工事とが必要
であったが、これらはいずれも施工現場においては望ま
しくない工事であった。
すなわち、溶接工事は、現場においてできるだけ火気
の使用を避けたいという一般的な要望に副わないうえ
に、最近では熟練した溶接工が不足していて信頼性の高
い溶接強度を確保することが容易でなくなってきている
問題点がある。また、ジョイントコンクリートの打設に
はその前後に型枠の組立、取り外し作業を必要として煩
雑であるうえに、コンクリートが所定の強度に達するま
で長時間を要し、プレキャストコンクリート工法の利点
を減殺する問題点がある。
(問題点を解決するための手段)
本発明は、直交接合に供される端部を特殊な構成とし
たPC壁部材を用いることによりPC壁部材の従来の直交接
合工事における上述の問題点を解決し得たものである。
以下第1図を例として本発明を説明する。
第1図は2枚のPC壁部材をL字状に直交接合する場合
のPC壁部材の端部の構成を示す。なお、図における矢印
は鉛直方向である。
1組2枚のPC壁部材1および2の端部は互いに嵌合関
係となるよう切り欠かれている。(切り欠き部を点線で
しめす)一方のPC部材1(切り欠き残部が上方にある方
の部材、以下後建て部材と記す)の切り欠き残部3に
は、鉄筋接合スリーブ(以下、スリーブと記す)9がそ
の長手方向を鉛直方向に一致させかつその下端が切り欠
き端面5に開口するように埋設されており、部材鉄筋7
の下端部がスリーブ9内に突き出て露出している。この
突き出し長はスリーブの長さの約1/2である。もう一方
のPC部材2(切り欠き残部が下方にある方の部材、以下
先建て部材と記す)の切り欠き残部4の切り欠き端面6
には部材鉄筋8の上方端部が上方に突き出て露出してお
り、その突き出し長はスリーブの長さの約1/2である。
なお、スリーブは注入口10および抜気口11により部材外
部に連通している。
この2枚1組のPC壁部材をL字状に直交接合するに
は、第2図に示すように、切り欠き残部が下方にある方
のPC壁部材2(先建て部材)をまず建て入れ、ついで切
り欠き残部が上にある方のPC壁部材1(後建て部材)を
上方より垂下しつつ、切り欠き端面より突き出ている部
材鉄筋端部がスリーブ内に挿入され切り欠き端面5およ
び6どうしが当接するよう建て入れる。その際、部材鉄
筋7および8どうしは図示するようにスリーブの長手方
向中央において本質的に突き合わせ状にあい会する。つ
いで、硬化可能な流動性充填材12を注入口10より注入し
抜気口11より溢出するまで注入する。充填材の硬化によ
り両部材の部材鉄筋どうしが突き合わせ接合されて両部
材が連結され、ここに2枚1組のPC壁部材1および2の
L字状直交接合が完成する。なお、第2図(a)は接合
前の状態、第2図(b)は接合後の状態を示す立面図、
第2図(c)は同状態の平面図である。
図より明らかなように、2枚のPC壁部材はその端部に
おいて互いに当接しつつ直交接合され、従来の直交接合
工事における如くジョイントコンクリートで充填しなけ
ればならない取り合い部等の空間をのこすことなく直交
接合できる。もっとも、防水等のため当接面に目地モル
タルを施工することが好ましいが、この目地モルタルの
施工はジョイントコンクリートの打設にくらべ比較にな
らぬほど容易である。
なお、PC壁部材の上下方向接合に便なように図示のよ
うに部材上下端面に同様の接合手段を設けてもよい。
本発明に使用される鉄筋接合スリーブは金属製の細長
い中空筒であって、一般に、鉄筋接合力を高めるためそ
の内面に多数の横溝を設けたり、その内面形を中央から
両端に向けて先細り形にした構造となっていることが多
い。これらは例えば、特公昭53−12732号公報、特開昭6
1−200246号公報等に開示されている。
本発明に使用される硬化可能な充填材としては、エポ
キシ樹脂等の樹脂系のもの、セメントモルタル、セメン
トペースト等のセメント系のものなど種々のものが使用
できるが、セメントモルタルを主体としてこれに膨張
材、流動化剤、強度増進剤、等を配合してなる高強度、
高流動性の無収縮グラウト材(例えば、日本スプライス
スリーブ株式会社発売のSSモルタル(商標名))が経済
性、施工性、充填性、接合強度、等を総合的に勘案して
好ましい。
(発明の効果)
本発明の方法によるときは、部材端どうしが当接した
状態でPC壁部材どうしの直交接合ができるので従来の直
交接合工事における問題点、すなわち、溶接工事を必要
とすること、およびジョイントコンクリート打設工事を
必要とすること、を不要ならしめることによってこれら
問題点を全面的に解決できる。Description: FIELD OF THE INVENTION The present invention relates to a method for joining precast concrete wall members in a direction perpendicular to each other essentially in abutting condition at their ends. It is characterized in that a precast concrete wall member having a specially configured end is used. (Prior art) A wall-type prefabricated construction method in which a precast concrete board (hereinafter referred to as a PC board) is joined to each other as a floor member and a wall member to construct a building frame has been widely implemented, and PC wall members are mutually connected. Orthogonal joining work, which joins at right angles, is a universally implemented joining work. The conventional orthogonal joining work of PC wall members will be described with reference to FIG. First, a pair of PC wall members 18 and 19 are erected at right angles to each other and at their ends with an interlock 25. A number of connecting reinforcing bars (called whiskers) 22 and 23 project perpendicularly from the end surfaces 20 and 21 provided for joining, and when the above-mentioned building is completed, the corresponding whiskers cross at right angles. I do. At this intersection, the corresponding beard streaks are welded together to connect one set of wall members. At this time, generally, reinforcing steel bars (referred to as reinforcing bars) 24 are attached to the crossed beard bars in the vertical direction, and the joints are welded together to reinforce the connecting portions. Then, assemble the formwork 26 around the joint 25 and cast concrete (called joint concrete). After the concrete reaches the specified strength, remove the formwork and complete the orthogonal joining of one set of PC wall members here. I do. (Problems to be Solved by the Invention) As described above, in the conventional orthogonal joining of PC wall members, welding work and joint concrete placing work were necessary, but these are all desirable at the construction site. There was no construction. In other words, welding work does not comply with the general desire to avoid the use of fire as much as possible on site, and recently, there is a shortage of skilled welders, making it easy to ensure reliable welding strength. There is a problem that is gone. In addition, the casting of the joint concrete requires assembling and removing the formwork before and after that, which is complicated, and it takes a long time until the concrete reaches a predetermined strength, thereby reducing the advantages of the precast concrete method. There is a problem. (Means for Solving the Problems) The present invention solves the above-mentioned problems in the conventional orthogonal joining work of PC wall members by using a PC wall member having a specially configured end provided for orthogonal joining. It could be solved. The present invention will be described below with reference to FIG. FIG. 1 shows an end configuration of a PC wall member when two PC wall members are orthogonally joined in an L-shape. The arrow in the figure is the vertical direction. The ends of a pair of two PC wall members 1 and 2 are cut out so as to be in a fitting relationship with each other. (The notch portion is indicated by a dotted line.) A reinforcing member joining sleeve (hereinafter, referred to as a sleeve) is provided in a notch remaining portion 3 of one PC member 1 (a member having a notch remaining portion located above, hereinafter referred to as a post-building member). 9) is buried so that its longitudinal direction coincides with the vertical direction and its lower end is opened to the cutout end face 5.
Is protruded into the sleeve 9 and is exposed. This overhang is about half the length of the sleeve. Notch end face 6 of notch remaining portion 4 of the other PC member 2 (member with notch remaining portion below, hereinafter referred to as pre-installed member)
The upper end of the member reinforcing bar 8 projects upward and is exposed, and the length of the projection is about 1/2 of the length of the sleeve.
The sleeve communicates with the outside of the member through an inlet 10 and a vent 11. In order to orthogonally join the pair of PC wall members in an L-shape, as shown in FIG. 2, first, the PC wall member 2 (first-built member) with the notch remaining portion located below is inserted. Then, while hanging the PC wall member 1 (post-built member) on which the notch remaining portion is on the upper side from above, the end of the member reinforcing bar projecting from the notch end face is inserted into the sleeve and the notch end faces 5 and 6 are inserted. Build so that they come into contact with each other. In this case, the member reinforcing bars 7 and 8 meet essentially in abutting manner at the longitudinal center of the sleeve as shown. Next, a hardening flowable filler 12 is injected from the injection port 10 until it overflows from the air release port 11. Due to the hardening of the filler, the member reinforcing bars of the two members are butt-joined to connect the two members, and the L-shaped orthogonal joining of the pair of PC wall members 1 and 2 is completed. FIG. 2 (a) is an elevational view showing a state before joining, FIG. 2 (b) is an elevational view showing a state after joining,
FIG. 2 (c) is a plan view of the same state. As is clear from the figure, the two PC wall members are orthogonally joined at the ends thereof while abutting each other, without occupying spaces such as joints that must be filled with joint concrete as in conventional orthogonal joining work. Can be orthogonally joined. Of course, it is preferable to apply joint mortar to the contact surface for waterproofing and the like, but the application of joint mortar is as easy as comparison with casting concrete. In addition, similar joining means may be provided on the upper and lower end surfaces of the member as shown in the figure to facilitate the vertical joining of the PC wall member. The reinforcing bar joining sleeve used in the present invention is a metal elongated hollow cylinder, and in general, a number of lateral grooves are provided on its inner surface to increase the reinforcing bar joining force, or the inner surface is tapered from the center to both ends. In many cases, it has a structured structure. These are described, for example, in Japanese Patent Publication No.
It is disclosed in, for example, Japanese Patent Application Laid-Open No. 1-2200246. As the curable filler used in the present invention, various types such as resin-based ones such as epoxy resin, cement-based mortar and cement-based ones such as cement paste can be used. High strength, blended with expander, fluidizer, strength enhancer, etc.
A high-flow non-shrink grout material (for example, SS Mortar (trade name) sold by Nippon Splice Sleeve Co., Ltd.) is preferable in consideration of economy, workability, filling property, bonding strength, and the like. (Effects of the Invention) According to the method of the present invention, the orthogonal joining of PC wall members can be performed in a state where the ends of the members are in contact with each other. , And the necessity of joint concrete casting work can completely eliminate these problems.
【図面の簡単な説明】
第1図は接合手段がスリーブ式である場合のPC壁部材の
端部の構成を示す立面図である。第2図はこの部材を用
いて直交接合する場合をしめす図であって、同図(a)
は接合前の状態を示す立面図であり、同図(b)および
(c)は接合したときの状態を示す立面図および平面図
である。
図における記号は次のとおりである。
1:PC壁部材 20:端面
2:同上 21:同上
3:切り欠き残部 22:ひげ筋
4:同上 23:同上
5:切り欠き端面 24:増し筋
6:同上 25:取り合い部
7:部材鉄筋 26:型枠
8:同上
9:スリーブ
10:注入口
11:抜気口
12:充填材
18:PC壁部材
19:同上BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an elevational view showing a configuration of an end portion of a PC wall member when a joining means is a sleeve type. FIG. 2 is a view showing a case where orthogonal joining is performed using this member, and FIG.
FIGS. 3A and 3B are an elevation view showing a state before joining, and FIGS. 2B and 2C are an elevation view and a plan view showing a state after joining. The symbols in the figure are as follows. 1: PC wall member 20: End face 2: Same as above 21: Same as above 3: Notch remaining 22: Stubber 4: Same as above 23: Same as above 5: Notched end face 24: Addition line 6: Same as above 25: Connecting part 7: Member reinforcing bar 26 : Mold frame 8: Same as above 9: Sleeve 10: Injection port 11: Vent port 12: Filler 18: PC wall member 19: Same as above
Claims (1)
PC壁部材と記す)の直交接合すべき端部を、互いに嵌合
関係にあるよう切り欠くと共に、切り欠き残部が上方に
ある方のPC壁部材(以下後建て部材と記す)の切り欠き
残部の下端部には鉄筋接合スリーブが埋設されており
(その埋設態様は該スリーブ下方開口が切り欠き残部下
端面に開口し、その上方開口からは該部材鉄筋の下端部
が挿入されている)、切り欠き残部が下方にある方のPC
壁部材(以下先建て部材と記す)の切り欠き残部の上端
面からは該部材鉄筋の上端部が所定長突き出ている構造
の二枚一組のPC壁部材を用い、先建て部材を建入れた
後、後建て部材を先建て部材に直交するようかつ先建て
部材の前記突き出ている鉄筋上端部が後建て部材の前記
埋設スリーブ内に挿入され、切り欠き端部の端面どうし
が当接するように建入れ、前記埋設スリーブ内に硬化可
能な流動性充填材を充填することを特徴とするプレキャ
ストコンクリート壁部材の直交接合方法(57) [Claims] A pair of precast concrete wall members (below
The ends of the PC wall member to be orthogonally joined are cut out so that they are in a mating relationship, and the notch remaining portion of the PC wall member on the upper side (hereinafter referred to as a post-building member) is cut out. A reinforcement joint sleeve is buried in the lower end portion of the member (in the embedding mode, the lower opening of the sleeve is notched, the lower end portion is open to the lower end surface, and the lower end portion of the member reinforcement is inserted from the upper opening), PC with the notch remaining below
From the upper end surface of the notch remaining portion of the wall member (hereinafter referred to as a pre-built member), use a pair of PC wall members having a structure in which the upper end of the member protrudes a predetermined length, and install the pre-built member. After that, the post-built member is inserted into the buried sleeve of the post-built member such that the protruding reinforcing bar is perpendicular to the pre-built member and the protruding reinforcing bar upper end is inserted into the buried sleeve of the post-built member so that the end faces of the notched ends abut against each other. Orthogonal joining of precast concrete wall members, characterized in that the buried sleeve is filled with a hardenable fluid filler.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62328405A JP2800118B2 (en) | 1987-12-26 | 1987-12-26 | Orthogonal joining method of precast concrete wall members |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62328405A JP2800118B2 (en) | 1987-12-26 | 1987-12-26 | Orthogonal joining method of precast concrete wall members |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH01174746A JPH01174746A (en) | 1989-07-11 |
JP2800118B2 true JP2800118B2 (en) | 1998-09-21 |
Family
ID=18209889
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62328405A Expired - Fee Related JP2800118B2 (en) | 1987-12-26 | 1987-12-26 | Orthogonal joining method of precast concrete wall members |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2800118B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20190072336A (en) * | 2017-12-15 | 2019-06-25 | 한국건설기술연구원 | Building Core System using Precast Concrete Panel with Column in the Center |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09137555A (en) * | 1995-11-15 | 1997-05-27 | Shimizu Corp | Execution method of building construction |
JP6960871B2 (en) * | 2018-03-06 | 2021-11-05 | 三井住友建設株式会社 | Joint structure between PCa wall and PCa member |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2203506A5 (en) * | 1972-10-12 | 1974-05-10 | Peugeot & Renault | |
JPS4977416A (en) * | 1972-11-30 | 1974-07-25 | ||
JPS61282534A (en) * | 1985-06-07 | 1986-12-12 | オリエンタル建設株式会社 | Semi-precast concrete pillar with reinforcement bar |
-
1987
- 1987-12-26 JP JP62328405A patent/JP2800118B2/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20190072336A (en) * | 2017-12-15 | 2019-06-25 | 한국건설기술연구원 | Building Core System using Precast Concrete Panel with Column in the Center |
KR102111337B1 (en) * | 2017-12-15 | 2020-05-15 | 한국건설기술연구원 | Building Core System using Precast Concrete Panel with Column in the Center |
Also Published As
Publication number | Publication date |
---|---|
JPH01174746A (en) | 1989-07-11 |
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