JPH03132545A - Setting of precast beam - Google Patents
Setting of precast beamInfo
- Publication number
- JPH03132545A JPH03132545A JP26840389A JP26840389A JPH03132545A JP H03132545 A JPH03132545 A JP H03132545A JP 26840389 A JP26840389 A JP 26840389A JP 26840389 A JP26840389 A JP 26840389A JP H03132545 A JPH03132545 A JP H03132545A
- Authority
- JP
- Japan
- Prior art keywords
- beams
- precast
- cable
- concrete
- pole
- 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
- 239000011178 precast concrete Substances 0.000 claims description 12
- 238000010276 construction Methods 0.000 claims description 2
- 239000004567 concrete Substances 0.000 abstract description 16
- 238000000034 method Methods 0.000 abstract description 7
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 150000002739 metals Chemical class 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 7
- 230000003014 reinforcing effect Effects 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 238000003780 insertion Methods 0.000 description 5
- 230000037431 insertion Effects 0.000 description 5
- 239000002131 composite material Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000011513 prestressed concrete Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は主として合成スラブの構築に際し、プレキャス
トコンクリート柱に支持させてプレストレストコンクリ
ート（以下ＰＣと記す）製のプレキャスト梁を架設する
プレキャストＰＣ梁の架設方法に関する。Detailed Description of the Invention (Industrial Application Field) The present invention is mainly concerned with the construction of a precast PC beam, in which a precast beam made of prestressed concrete (hereinafter referred to as PC) is erected supported by precast concrete columns when constructing a composite slab. Regarding the erection method.
（従来の技術）
従来プレキャスト梁を使用した多階建築物の構築か多く
提案されており、そのプレキャスト梁の架設に際しては
、ＰＣ梁の先端に連結用鉄骨を突設しておき、その連結
用鉄骨を鉄骨コンクリート柱から水平に突出させた梁連
結用鉄骨に対してポルト止めし、その鉄骨部分の周囲を
場所打コンクリートで埋めるようにしたものや、プレキ
ャスト梁の先端に鉄筋を突出させ、これをプレキャスト
柱から突出させた鉄筋に溶接やカプラージヨイントによ
って固着し、その鉄筋を埋め込んで連結部分の場所打コ
ンクリートを打設するものが一般的であった。(Prior art) Many proposals have been made to construct multi-story buildings using precast beams, and when constructing the precast beams, a connecting steel frame is protruded from the tip of the PC beam, and the connecting steel frame is A steel frame is bolted to a beam connecting steel frame that protrudes horizontally from a steel-framed concrete column, and the area around the steel frame is filled with cast-in-place concrete. It was common practice to attach the steel bars to the reinforcing bars protruding from the precast columns by welding or coupler joints, embedding the reinforcing bars, and then pouring cast-in-place concrete for the connecting parts.
（発明か解決しようとする課題）
上述の如き従来の方法では梁の架設に際し、支保工を必
要とし、また連結部分の周囲に場所打コンクリートを打
設するために型枠を組まなければ３１１
ならず、しかも連結部分のプレキャストコンクリートと
場所打コンクリートの一体化ができないため、応力の分
布を−様なものにできないという問題があった。(Problem to be solved by the invention) The conventional method described above requires shoring when constructing a beam, and also requires building a formwork to pour cast-in-place concrete around the joint. Moreover, since the precast concrete and cast-in-place concrete of the connecting part cannot be integrated, there is a problem that the stress distribution cannot be made uniform.
このため、柱を挾んで連結される複数の渠内にアンボン
ドケーブルを挿入し、梁の架設後、複数の梁に連続させ
てプレストレスを付与する方法があるが、この種の従来
の方法では柱を貫通させてＰＣ＃線を柱側側の梁に押通
するものであるため、あらかじめ柱に貫通孔を開口して
おかなけれはらならず、その製造に手数を要するととも
に、架設作業も困難の伴うものであった。For this reason, there is a method in which unbonded cables are inserted into multiple conduits that are connected by sandwiching the columns, and after the beams are erected, prestress is continuously applied to the multiple beams, but this type of conventional method Since the PC# wire is passed through the column and pushed through to the beam on the column side, a through hole must be drilled in the column in advance, which is time-consuming to manufacture and difficult to construct. It was accompanied by
本発明はこのような従来の問題にがんがみ、柱部分にお
ける梁の応力分布を−様なものとなすとともに、プレキ
ャスト梁の架設端部や、プレキャスト柱の製造が容易で
、架設作業も能率よく行うことができ、しかも各ＰＣ梁
間の結合が強固なものとなし得るプレキャストＰ Ｃ梁
の架設方法の提供を目的としたものである。The present invention addresses these conventional problems, and makes the stress distribution of the beam in the column part similar to that of the previous model.The present invention also makes it possible to easily manufacture the ends of precast beams and precast columns, and to reduce the erection work. The object of the present invention is to provide a method for constructing precast PC beams that can be carried out efficiently and that can provide strong connections between each PC beam.
（課題を達成するための手段）
上述の如き従来の問題を解決し、所期の目的を達成する
ための本発明の要旨とするところは、周囲にフランジ状
の梁架設用の張出部を一体に有するプレキャストコンク
リ−１・柱を立設し、前記張出部上に四方向よりプレキ
ャストＰ Ｃ梁の端部を支持させ、該ＰＣ梁は、その少
なくとも先端部分をプレ上ヤス１〜コンクリート柱より
広幅に成形しておき、そのＰＣ梁の先端側面にテーパー
面を備え、前記各ＰＣ梁のテーパー面間及び各ＰＣ梁の
先端面とプレキャストコンクリート柱間をそれぞれ互い
に対向させ、互いに延長方向側に対向するＰＣ梁の先端
間を互いに隣り合うＰＣ梁の先端部を幅方向に貫通させ
た端部緊張ケーブルをもって緊張させることを特徴とし
てなるプレキャトＰＣ梁の架設方法に存する。(Means for Achieving the Object) The gist of the present invention in order to solve the above-mentioned conventional problems and achieve the intended purpose is to provide a flange-like overhanging part for constructing a beam around the periphery. An integrated precast concrete 1 column is erected, and the ends of the precast PC beam are supported from four directions on the overhang, and the PC beam has at least its tip portion covered with precast concrete 1. The PC beams are formed to be wider than the columns, and the tip side surfaces of the PC beams are provided with tapered surfaces, and the tapered surfaces of each of the PC beams and the tip surfaces of each PC beam and the precast concrete columns are made to face each other in the extending direction. The method for constructing a precast PC beam is characterized in that the ends of the PC beams facing each other are tensioned using an end tension cable that passes through the ends of the adjacent PC beams in the width direction.
（作用）
このプレキャストＰＣ梁の架設方法においては、ＰＣ梁
をプレキャストコンクリート柱の梁架設用の張出部間に
掛は渡し、その互いに延長方向にあるＰＣＣ売先端間端
部緊張ＰＣケーブルにて緊張することにより、柱を挾ん
だＰＣ梁間にもプレストレスが付与され、これによって
複数の梁にまたがらせて長手方向に連続したプレストレ
スが付与されることとなり、また端部緊張ＰＣケーブル
はプレキャスト柱を貫通せずにその側面外に挿通される
ため、作業性が良くなったものである。(Function) In this precast PC beam erection method, the PC beam is hung between the overhanging parts of the precast concrete column for beam erection, and a tensioned PC cable is used at the end between the PCC selling points in the mutually extending direction. By tensioning, prestress is also applied between the PC beams that sandwich the columns, and continuous prestress is applied in the longitudinal direction across multiple beams. Because it is inserted outside the side of the precast column without penetrating it, workability is improved.
更に、直交配置に隣り合うＰＣ梁の先端の幅方向に端部
緊張ＰＣケーブルが貫通されているなめ、全ＰＣ梁が柱
の外周部分にて強固に結合される。Furthermore, since the end-tensioned PC cables are passed through in the width direction of the tips of the PC beams adjacent to each other in the orthogonal arrangement, all the PC beams are firmly connected at the outer periphery of the column.
（実施例） 次に本発明の実施例を図面について説明する。(Example) Next, embodiments of the present invention will be described with reference to the drawings.
図において１はプレキャストコンクリ−柱であり、２，
２・・・・・・はプレキャストＰＣ梁である。プレキャ
ストコンクリート柱１には梁架設高さ位置に梁架設用の
張出部３が一体に成形されている。In the figure, 1 is a precast concrete column, 2,
2... are precast PC beams. A projecting portion 3 for beam erection is integrally formed on the precast concrete column 1 at a beam erection height position.
プレキャストＰＣ梁２は、柱１より幅の広いフラットな
形状に成形され、先端下面に架設用の段部４が形成され
ている。このＰＣ梁２の端部両側面は、４５°より少し
大きい角度のテーパー面２ａ、２ａとなっており、この
両テーパー面２ａ２ａに連通開口させた幅方向の端部緊
張ケーブル挿通孔が設けられ、プレキャストＰＣ梁２の
端部を除く中央部分は側面に凹陥部５か長手方向に成形
され、その凹陥部の端部を閉じる向きに一体に成形され
た端板部６にＰ Ｃケーブル挿通孔７（第５図に示す）
か開口されている。また、このプレキャストＰＣ梁２に
は通常の補強鉄筋の他に、全長にわたってコンクリート
に付着させたボンドタイプのｐｃａ線８（第３図に示す
）が埋設されているとともに、上面に場所打コンクリー
トと一体化させるためのフープ状の連結鉄筋９か突設さ
れている。The precast PC beam 2 is formed into a flat shape that is wider than the pillar 1, and has a stepped portion 4 for erection on the lower surface of the tip. Both sides of the end of this PC beam 2 have tapered surfaces 2a, 2a with an angle slightly larger than 45°, and a tension cable insertion hole is provided at the end in the width direction that communicates with both tapered surfaces 2a2a. The central part of the precast PC beam 2, excluding the ends, is formed with a concave part 5 on the side surface in the longitudinal direction, and a PC cable insertion hole is formed in the end plate part 6 integrally formed in the direction in which the end of the concave part is closed. 7 (shown in Figure 5)
or is opened. In addition to regular reinforcing reinforcing bars, this precast PC beam 2 also has bond type PCA wires 8 (shown in Figure 3) attached to the concrete along its entire length, and cast-in-place concrete on the top surface. A hoop-shaped connecting reinforcing bar 9 is provided protrudingly for integration.
このように構成されるプレキャストＰＣ梁２を柱１の張
出部３に支持させて架設するものであり、まず柱１を立
設し、その張出部３の縁部上に端部の架設用の段部４を
嵌合させて横架する。このとき、互いに直交配置にある
ＰＣ梁２，２は、テーパー面２ａ、２ａか張出部３上に
あって、互いに対向して配置される。このようにして柱
１の四周囲の縁部にプレキャストＰＣ梁の先端を支持さ
せその互いに延長方向にあるプレキャストＰＣ梁２２の
対向面に形成されているＰＣケーブル挿通孔７．７に互
いに直交配置に隣り合うＰＣＣ２０幅方向のケーブル挿
通孔１０を貫通させて端部緊張ＰＣケーブル１１を挿通
し、各端板部６の背面にてＰＣケーブル１１を定着金具
１２によって仮定着させる。The precast PC beam 2 constructed in this way is supported and erected by the overhang 3 of the column 1. First, the column 1 is erected, and the end portion is erected on the edge of the overhang 3. Fit the step part 4 for horizontal suspension. At this time, the PC beams 2, 2, which are arranged orthogonally to each other, are located on the tapered surfaces 2a, 2a or the overhanging portion 3, and are arranged facing each other. In this way, the tips of the precast PC beams are supported on the four peripheral edges of the column 1, and are arranged orthogonally to each other in the PC cable insertion holes 7.7 formed on the opposing surfaces of the precast PC beams 22 in the mutually extending directions. The end-tensioned PC cable 11 is inserted through the cable insertion hole 10 in the width direction of the adjacent PCC 20, and the PC cable 11 is temporarily attached by the fixing fitting 12 on the back surface of each end plate part 6.
この状態でテーパー面２ａ、２ａ間及び柱１−とＰＣ梁
端面間の空隙内に目地コンクリートを詰め、その硬化を
待ってＰＣケーブル１１を一端から緊張し、両プレキャ
ス１〜ＰＣ梁２，２を互いに引き寄せる方向に緊張し、
プレストレスを付与する。In this state, fill joint concrete in the gap between the tapered surfaces 2a and 2a and between the column 1- and the end face of the PC beam, wait for it to harden, and then tension the PC cable 11 from one end. tension towards each other,
Apply prestress.
このようにしてプレキャストＰ Ｃ梁２，２・・・・・
・を架設後、第３図、第４図に示ずように互いに平行な
向きに隣り合っているプレ式ヤス１〜梁２，２間にプレ
上ヤス１−コンクリ−１へ版１４．１．４・・・・・・
を掛は渡し、その上に各プレキャス＋−ｐ ｃ梁２の上
面の連結鉄筋９に連結させて配筋し、場所打コンクリー
ト層１５を打設し、該場所打コンクリート層１５とプレ
キャストコンクリート版及びプレキャス＋−ｐ ｃ梁２
とが一体化された合成スラブとなす。In this way, precast PC beams 2, 2...
After erecting, as shown in Figures 3 and 4, the plate 14.1 is installed between the pre-type file 1 and the beams 2 and 2, which are adjacent to each other in parallel directions. ．４・・・・・・
The cast-in-place concrete layer 15 is poured, and the cast-in-place concrete layer 15 is connected to the connecting reinforcing bars 9 on the top surface of each precast +-PC beam 2. and precast +-p c beam 2
It is made into a composite slab that is integrated with.
（発明の効果）
］−述したように本発明のプレキャストＰＣ梁の架設方
法においては、互いに延長方向にあるプレキャストＰＣ
梁の端部間を端部緊張ＰＣケーブルにて互いに引き寄せ
る方向に緊張することにより、柱を挾んな梁間に連続し
たプレストレスが付与され、しかもその梁自体にも全長
にプレストレスが付与されているため、延長方向の複数
の梁に連続したプレストレスが付与−されることとなり
、梁の連結部分に応力が集中しない構造となすことがで
きる。(Effects of the invention) - As described above, in the precast PC beam erection method of the present invention, precast PC beams that are in the extension direction of each other are
By tensioning the ends of the beams in a direction that draws them toward each other using end-tensioned PC cables, continuous prestress is applied between the beams that sandwich the columns, and prestress is also applied to the entire length of the beam itself. Therefore, continuous prestress is applied to the plurality of beams in the extending direction, and a structure in which stress is not concentrated at the connecting portions of the beams can be achieved.
また、端部緊張ＰＣケーブルは、プレキャストＰＣ梁の
端面と柱側面とに形成される空隙を通して柱の側面外に
配置されるものであるため、柱には端部緊張ＰＣケーブ
ル用の貫通孔か不要になり、その製造が容易であるとと
ともに端部緊張ＰＣケーブルの配設作業も容易であり、
作業性良く架設がなし得られる。In addition, since the end-tensioned PC cable is placed outside the side of the column through the gap formed between the end face of the precast PC beam and the column side, the column has a through hole for the end-tensioned PC cable. This eliminates the need for it, making it easy to manufacture, and also making it easy to install the end-tensioned PC cable.
Erection can be done with good workability.
更に、架設後のＰＣ梁は、互いに直交配置にあるものと
うしが端部緊張ＰＣケーブルのせん断力によって結合さ
れることとなり、強固な連結か得られる。Furthermore, after the PC beams are erected, those arranged orthogonally to each other are connected by the shear force of the end-tensioned PC cables, resulting in a strong connection.
第１図は梁架設状態の平面図、第２図は同側面図、第３
図は完成合成スラブの断面図、第４図は第３図中のＡ−
Ａ線断面図、第５図はプレキャストＰＣ梁の端部の傾斜
図である。
１・・・・・・プレキャストコンクリ−１〜柱、２・・
・・・・プレキャストＰＣ梁、
２ａ ７・・・・・・テーパー面、
３・・・・・・張出部、
４・・・・・・段部、５・・・・・・凹陥部、６・・・
・・・端板部、８・・・・・・ＰＣ鋼線、９・・・・・
・連結鉄筋、１０・・・・・・ケーブル挿通孔、１１・
・・・・・ＰＣケーブル、１４・・・・・・コンクリー
ト版、
１５・・・・・・場所打コンクリート層。
第１
図
第２図
第３図
第４図
第５図
５Figure 1 is a plan view of the beam in the installed state, Figure 2 is a side view of the same, Figure 3
The figure is a cross-sectional view of the completed composite slab, and Figure 4 is A-A in Figure 3.
A sectional view taken along the line A, and FIG. 5 is an inclined view of the end of the precast PC beam. 1... Precast concrete - 1 ~ pillars, 2...
...Precast PC beam, 2a 7...Tapered surface, 3...Protruding part, 4...Step part, 5...Recessed part, 6...
... End plate part, 8 ... PC steel wire, 9 ...
・Connection reinforcing bar, 10... Cable insertion hole, 11.
...PC cable, 14...Concrete plate, 15...Cast-in-place concrete layer. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 5
Claims (1)
プレキャストコンクリート柱を立設し、前記張出部上に
四方向よりプレキャストＰＣ梁の端部を支持させ、該Ｐ
Ｃ梁は、その少なくとも先端部分をプレキャストコンク
リート柱より広幅に成形しておき、そのＰＣ梁の先端側
面にテーパー面を備え、前記各ＰＣ梁のテーパー面間及
び各ＰＣ梁の先端面とプレキャストコンクリート柱間を
それぞれ互いに対向させ、互いに延長方向側に対向する
ＰＣ梁の先端間を互いに隣り合うＰＣ梁の先端部を幅方
向に貫通させた端部緊張ケーブルをもって緊張させるこ
とを特徴としてなるプレキャトＰＣ梁の架設方法。A precast concrete column having a flange-like overhang for beam construction is erected around the periphery, and the ends of the precast PC beam are supported from four directions on the overhang.
The C-beam has at least its tip part formed wider than the precast concrete column, and has a tapered surface on the tip side of the PC beam, so that there is a gap between the tapered surfaces of each PC beam and between the tip surface of each PC beam and the precast concrete beam. A precast PC characterized in that the columns are made to face each other, and the ends of the PC beams facing each other in the extension direction are tensioned using an end tension cable that penetrates the ends of the adjacent PC beams in the width direction. How to erect beams.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26840389A JPH073100B2 (en) | 1989-10-16 | 1989-10-16 | How to build precast PC beams |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26840389A JPH073100B2 (en) | 1989-10-16 | 1989-10-16 | How to build precast PC beams |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03132545A true JPH03132545A (en) | 1991-06-05 |
| JPH073100B2 JPH073100B2 (en) | 1995-01-18 |
Family
ID=17457993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26840389A Expired - Fee Related JPH073100B2 (en) | 1989-10-16 | 1989-10-16 | How to build precast PC beams |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH073100B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100356048B1 (en) * | 2000-01-14 | 2002-10-12 | 삼성물산 주식회사 | U-shape PS beam and method for constructing structure using the same |
-
1989
- 1989-10-16 JP JP26840389A patent/JPH073100B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100356048B1 (en) * | 2000-01-14 | 2002-10-12 | 삼성물산 주식회사 | U-shape PS beam and method for constructing structure using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH073100B2 (en) | 1995-01-18 |
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