JPH0422605A - Manufacture of hollow precast concrete-beam - Google Patents
Manufacture of hollow precast concrete-beamInfo
- Publication number
- JPH0422605A JPH0422605A JP12691790A JP12691790A JPH0422605A JP H0422605 A JPH0422605 A JP H0422605A JP 12691790 A JP12691790 A JP 12691790A JP 12691790 A JP12691790 A JP 12691790A JP H0422605 A JPH0422605 A JP H0422605A
- Authority
- JP
- Japan
- Prior art keywords
- concrete
- sides
- joint
- formwork
- 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.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 23
- 239000004567 concrete Substances 0.000 claims abstract description 44
- 238000000034 method Methods 0.000 claims abstract description 9
- 238000009415 formwork Methods 0.000 claims description 29
- 239000011178 precast concrete Substances 0.000 claims description 15
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 238000000465 moulding Methods 0.000 abstract description 2
- 230000002787 reinforcement Effects 0.000 description 4
- 239000011800 void material Substances 0.000 description 3
- 238000005056 compaction Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Landscapes
- Rod-Shaped Construction Members (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は梁幅方向中央部に梁の長手方向に亘って貫通ず
る空隙を有づる中空プレキャストコンクリート梁部材の
製造り法に係るものである。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a method for manufacturing a hollow precast concrete beam member having a gap extending through the longitudinal direction of the beam at the center in the width direction of the beam. .
（従来の技術）
従来この種の梁部材の製造に際しζは、外部型枠（ａ）
の他に底部型枠（ｂ）をセットして梁鉄筋（０を配置し
たのち内部型枠（（至）を組立て、次いで上部のコンク
リート投入部（ｅ）からコンクリート（ｆ）を打設し、
同打設コンクリート（ｆ）の硬化径内部型枠（ｄ）及び
底部型枠（ｂ）を除去して製作する方法（第９図乃至第
１１回参照）
或いは第１２図に示すように外部型枠（ａ）内に内部型
枠（（至）をセントして、上部のコンクリート投入部（
ぬからコンクリート（５）を打設し、同打設コンクリー
ト（５）が硬化したのち、内部型枠（ｄ）を除去して梁
両側部と梁底部とが一体化された中空プレキャストコン
クリート梁を製造する方法が行なわれ′Ｃいる。(Prior art) Conventionally, when manufacturing this type of beam member, ζ is an external formwork (a)
In addition, set the bottom formwork (b) and place the beam reinforcing bars (0), then assemble the internal formwork ((to)), then pour concrete (f) from the upper concrete input part (e),
A method of manufacturing by removing the hardened diameter inner formwork (d) and bottom formwork (b) of the poured concrete (f) (see Figures 9 to 11), or an external mold as shown in Figure 12. Place the internal formwork ((to) in the frame (a), and insert the upper concrete input section (
After the concrete (5) is poured and the poured concrete (5) has hardened, the internal formwork (d) is removed to create a hollow precast concrete beam in which both sides of the beam and the bottom of the beam are integrated. A method of manufacturing is performed.
なお第９図中、（ｉ）は内部型枠（ｂ）と底部型枠山）
との間に介装されたパツキン材である。In Figure 9, (i) indicates the internal formwork (b) and the bottom formwork mountain)
This is a packing material inserted between the
（発明が解決しようとする課題）
前記従来の方法によれば内部型枠をセットする必要があ
るが、梁鉄筋をセットしたのちの作業となり、作業性が
悪い。またコンクリート投入部が狭小であるためコンク
リートの打設及び締固めが困難である。更にコンクリー
ト硬化後、内部型枠を解体、除去する必要があるが、コ
ンクリートの付着があり、多大の労力を要する。(Problems to be Solved by the Invention) According to the conventional method, it is necessary to set the internal formwork, but the work is performed after the beam reinforcing bars are set, and the workability is poor. Furthermore, since the concrete input section is narrow, it is difficult to place and compact concrete. Furthermore, after the concrete has hardened, it is necessary to dismantle and remove the internal formwork, which requires a great deal of labor because of the adhesion of concrete.
また前記のようにして製造された中空プレキャストコン
クリート梁の中空部内側面は型枠面であるので、平滑面
に形成され、後打ちコンクリートとの一体性が確保され
ない惧れがある。またこれを防止するために、前記中空
部内側面に凹凸を設けようとする場合は、型枠、または
工程に別の解決策を必要とする。Furthermore, since the inner surface of the hollow part of the hollow precast concrete beam manufactured as described above is a formwork surface, it is formed into a smooth surface, and there is a risk that the integrity with the post-cast concrete may not be ensured. Further, in order to prevent this, if it is intended to provide unevenness on the inner surface of the hollow portion, a different solution is required for the mold or the process.
本発明は前記従来技術の有する問題点に鑑み″ζ提案さ
れたもので、その目的とする処は、中空部成型のための
型枠の製作組立、解体の必要がなく、中空部内側面に容
易に凹凸を設けることができ作業性が向上され、経済性
の優れた中空コンクリート梁部材の製造り法を提供する
点にある。The present invention has been proposed in view of the problems of the prior art, and its purpose is to eliminate the need for manufacturing, assembling and dismantling a formwork for molding a hollow part, and to easily form a mold on the inner surface of the hollow part. It is an object of the present invention to provide a method for manufacturing a hollow concrete beam member which can provide unevenness, improves workability, and is highly economical.
（課題を解決するだめの手段）
前記の目的を達成するため、本発明に係る中空プレキャ
ストコンクリート梁部材の製造り法によれば、梁幅り間
中央部に長手方向に亘って貫通する空隙を有する中空プ
レキャストコンクリート梁部材の製造において、梁幅方
向両側に位置覆る梁側部を平面状態で製作し、同梁側部
打設コンクリートが硬化したのち前記同梁側部を建起し
、次いご同両梁側部の繋ぎ部の型枠、鉄筋をセットした
のち同繋ぎ部に前記同梁側部の接合コンクリートを打設
するものである。(Means for Solving the Problems) In order to achieve the above object, according to the method for manufacturing a hollow precast concrete beam member according to the present invention, a void penetrating in the longitudinal direction is formed in the center part between the beam widths. In the manufacturing of hollow precast concrete beam members having the same structure, the beam side parts located on both sides in the beam width direction are manufactured in a flat state, and after the concrete poured on the beam side parts has hardened, the said beam side parts are erected. After setting the formwork and reinforcing bars at the joint between the two beam sides, concrete for joining the beam sides is placed at the joint.
（作用）
本発明によれば前記したように、中空プレキャストコン
クリート梁部材の梁幅方向中央部に設けられた空隙を挟
んで対向する一双の梁側部を平面状態で製作し、コンク
リートの打設、締固め作業の作業性を向上づるとともに
、必要に応して前記梁側部の内面に後打ちコンクリート
との一体性を向上させるための凹凸を設けることができ
る。(Function) According to the present invention, as described above, a pair of beam side portions facing each other across a gap provided at the center in the beam width direction of a hollow precast concrete beam member are manufactured in a flat state, and concrete is poured. In addition to improving the workability of compaction work, it is possible to provide irregularities on the inner surface of the beam side portion, if necessary, to improve integrity with post-cast concrete.
かくシ゛ζ前記−双の梁側部を製作したのち建起して対
向せしめ、同両梁側部の繋ぎ部の型枠、鉄筋をセットし
て繋ぎ部の接合コンクリートを打設し、前記同梁側部を
結合し、間両梁側部間に梁幅方向中央部において、梁の
長手方向に亘っ゛ζ貫通する空隙を設けることができる
ものである。After manufacturing the twin side beams, erect them so that they face each other, set the formwork and reinforcing bars for the joint between the two beam sides, and pour the joint concrete for the joint. The beam side portions are joined together, and a gap can be provided between both beam side portions at the center in the width direction of the beam, passing through the beam in the longitudinal direction.
（実施例） 以下、本発明を図示の実施例について説明する。(Example) Hereinafter, the present invention will be described with reference to illustrated embodiments.
第１図及び第４図に示すように、水平の定１ （１）上
に一双の梁側部成型用型枠（２）を設置し、同各型枠（
２）に梁主筋（３）及び肋筋を縦に２分割した分割肋筋
（４）を配筋してコンクリート（５）を打設面る。As shown in Figures 1 and 4, a pair of beam side forming forms (2) are installed on a horizontal plane 1 (1), and each of the formworks (
2) Arrange the main beam reinforcement (3) and the split reinforcement (4), which vertically divides the reinforcement into two, and place the concrete (5) on the surface.
更にコンクリート（５）の打設直後、打設面にシアーキ
ーを構成する凹部ｒ６）を成型する。Furthermore, immediately after pouring the concrete (5), a recess r6) constituting a shear key is formed on the pouring surface.
なお前記肋筋（４）は後述のように両側の梁側部を建起
したとき、互いに干渉しない位置に配筋される。Note that the ribs (4) are arranged at positions where they do not interfere with each other when the side portions of the beam on both sides are erected as described later.
前記打設コンクリート（５）が硬化したのち、第２図及
び第５図に示すように前記−双の型枠（２］ （２１を
矢印に示すように建起し、相対する同各型枠（２）（２
）における打設コンクリート（５）の繋ぎ部において、
夫々間隔を存し′Ｃ相対する各−双の繋ぎ用型枠（７）
（７）をセットし、同各型枠（７）（７１間に接合コン
クリート（８）を打設し、同打設コンクリート（８）の
硬化を俟っこ、梁幅中央に梁の長手方向に亘っこ延びる
空隙（９）を有する中空プレキャストコンクリート梁部
材の製造を完了する。（第３図及び第６図参照）図中（
６′）は左右一双の梁側部（１，０） （１０）を連結
Ｊる接合部ごある。After the poured concrete (5) has hardened, as shown in Figures 2 and 5, the twin formworks (2) (21) are erected as shown by the arrows, and the opposing formworks are (2) (2
) at the joint of the poured concrete (5),
Two connecting formworks (7) facing each other with an interval between them.
(7), pour joint concrete (8) between each formwork (7) (71), let the poured concrete (8) harden, and place it in the longitudinal direction of the beam at the center of the beam width. The manufacture of a hollow precast concrete beam member having a void (9) extending over the entire length has been completed (see Figures 3 and 6).
6') is a joint that connects the left and right beam side parts (1, 0) and (10).
なおＵ字型のプレキャストコンクリート梁部材を製造す
る場合は、前記第１圓及び第４図、第２図及び第５図に
示す工程の次に、第７図に示１ように、相対する一双の
梁側部（１０） （１０）間に底部コンクリ−） （１
１）を打設するものであって、第８図はかくして製造さ
れたＵ字型のプレキャストコンクリート梁部材の完成状
態を示づ斜視図である。In addition, when manufacturing a U-shaped precast concrete beam member, after the steps shown in the first circle, FIG. 4, FIG. 2, and FIG. The bottom concrete between the beam sides (10) (10) (1
1), and FIG. 8 is a perspective view showing the completed state of the U-shaped precast concrete beam member thus manufactured.
（発明の効果）
本発明によれば前記したように、梁幅方向両側に位置−
４る梁側部を平面状ｉｔ’製作し、同梁側部を間部の打
設コンクリートが硬化したのち、建起し、しかるのち同
両梁側部の繋ぎ部の型枠、鉄筋をセットし、同繋ぎ部に
前記同梁側部の接合コンクリートを打設して、梁幅り間
中央部に長手方向に亘って貫通ずる空隙を有づる中空プ
レキャストコンクリート梁部材を製造するようにしたの
乙内部型枠を使用することがなく、内部型枠の製作及び
組立、解体の必要がなく、前記梁部材製造時の省力化が
図られ、経済的にも有利である。(Effects of the Invention) According to the present invention, as described above, the
4. Fabricate the side parts of the beams in a planar shape, and after the poured concrete between the beams has hardened, erect them, and then set the formwork and reinforcing bars at the joints between the two sides of the beams. Then, the joining concrete of the side parts of the beam is placed in the connecting part to manufacture a hollow precast concrete beam member having a gap extending longitudinally in the center between the beam widths. There is no need to use an internal formwork, and there is no need to manufacture, assemble, or dismantle the internal formwork, which saves labor during the manufacture of the beam member, and is economically advantageous.
また大半のコンクリート部を平面的に打設するので、コ
ンクリート打設、締固め作業の作業性がよく、また前記
梁側部の内面に後打ちコンクリートとの一体化を向上す
るための凹部を容易に設けることがごきる。更にまた平
面的な型枠で製作ごきるので、型枠製作費の節減が回ら
れる。In addition, since most of the concrete is poured flat, the workability of concrete pouring and compaction is good, and it is easy to create recesses on the inner surface of the beam sides to improve integration with post-cast concrete. It is possible to set up a Furthermore, since it can be manufactured using a flat formwork, the cost of manufacturing the formwork can be reduced.
第１図及び第２図並に第３図は本発明に係る中空プレキ
ャストコンクリート梁部材の製造方法の一実施例の工程
を示す縦断面図、第４図及び第５図並に第６図は夫々第
１図及び第２図並に第３図の平面図、第７図及び第８図
は夫々Ｕ字型プレキャストコンクリート梁部材の製造過
程を示す縦断面図、並に同梁部材の部分斜視図、第９図
及び第１０図は従来の中空プレキャストコンクリート製
部材の製造り法の工程を示１部分斜視図、第１１図は内
型枠の斜視図、第１２図は従来のＵ字型コンクリート梁
部材製造力法の実施状態を示す縦断面図である。
（１）・・・定盤、 （２）・・・梁側郭成
型用型枠、（３）・・・梁主筋、 （４）・・
・肋筋、（５）・・・コンクリート、 （６）・・・
凹部、（７）・・・繋ぎ用型枠、 （８）・・・
接合コンクリート、（９）・・・空隙、 （
１０）・・・梁側部。
代理人 弁理士 岡 本 重 文
外１名
鵬
区
第２図
第３区
第５図
１υ
朶側郡
第６図
第９図
柩１０図
鶴１１図
第１２区1, 2, and 3 are longitudinal cross-sectional views showing steps of an embodiment of the method for manufacturing a hollow precast concrete beam member according to the present invention, and FIGS. 4, 5, and 6 are Figures 1 and 2 and 3 are plan views, respectively, and Figures 7 and 8 are longitudinal sectional views showing the manufacturing process of a U-shaped precast concrete beam member, and a partial perspective view of the beam member. Figures 9 and 10 show the process of manufacturing a conventional hollow precast concrete member. 1 partial perspective view, Figure 11 is a perspective view of the inner formwork, and Figure 12 is a conventional U-shaped It is a longitudinal cross-sectional view showing the implementation state of the concrete beam member manufacturing force method. (1)...Surface plate, (2)...Formwork for forming beam side walls, (3)...Beam main reinforcement, (4)...
- Ribs, (5)... Concrete, (6)...
Recessed portion, (7)... Connecting formwork, (8)...
Bonded concrete, (9)...Void, (
10)...Beam side part. Agent Patent Attorney Shige Okamoto Bungai 1 person Peng Ward, Figure 2, Ward 3, Figure 5, 1υ, Ward, Figure 6, Figure 9, Coffin, Figure 10, Crane, Figure 11, District 12
Claims (1)
る中空プレキャストコンクリート梁部材の製造において
、梁幅方向両側に位置する梁側部を平面状態で製作し、
同梁側部打設コンクリートが硬化したのち前記両梁側部
を建起し、次いで同両梁側部の繋ぎ部の型枠、鉄筋をセ
ットしたのち同繋ぎ部に前記両梁側部の接合コンクリー
トを打設することを特徴とする中空プレキャストコンク
リート梁部材の製造方法。In manufacturing a hollow precast concrete beam member having a gap extending longitudinally through the central part in the beam width direction, the beam side parts located on both sides in the beam width direction are manufactured in a flat state,
After the poured concrete for the beam sides has hardened, the two beam sides are erected, and the formwork and reinforcing bars are set at the joint between the two beam sides, and the two beam sides are joined to the joint. A method for manufacturing a hollow precast concrete beam member, characterized by pouring concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12691790A JPH0822546B2 (en) | 1990-05-18 | 1990-05-18 | Method for manufacturing hollow precast concrete beam member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12691790A JPH0822546B2 (en) | 1990-05-18 | 1990-05-18 | Method for manufacturing hollow precast concrete beam member |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0422605A true JPH0422605A (en) | 1992-01-27 |
| JPH0822546B2 JPH0822546B2 (en) | 1996-03-06 |
Family
ID=14947098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12691790A Expired - Fee Related JPH0822546B2 (en) | 1990-05-18 | 1990-05-18 | Method for manufacturing hollow precast concrete beam member |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0822546B2 (en) |
-
1990
- 1990-05-18 JP JP12691790A patent/JPH0822546B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0822546B2 (en) | 1996-03-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |