JPS62233206A - Manufacture of precast concrete member - Google Patents
Manufacture of precast concrete memberInfo
- Publication number
- JPS62233206A JPS62233206A JP7620786A JP7620786A JPS62233206A JP S62233206 A JPS62233206 A JP S62233206A JP 7620786 A JP7620786 A JP 7620786A JP 7620786 A JP7620786 A JP 7620786A JP S62233206 A JPS62233206 A JP S62233206A
- Authority
- JP
- Japan
- Prior art keywords
- formwork
- precast concrete
- manufacturing
- section
- bag
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 20
- 239000011178 precast concrete Substances 0.000 title claims description 13
- 238000009415 formwork Methods 0.000 claims description 38
- 238000000034 method Methods 0.000 claims description 5
- 230000003014 reinforcing effect Effects 0.000 description 10
- 239000004567 concrete Substances 0.000 description 8
- 230000002787 reinforcement Effects 0.000 description 5
- 238000003756 stirring Methods 0.000 description 2
- -1 and after hardening Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
Landscapes
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
- Moulds, Cores, Or Mandrels (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は型枠を兼用できるプレキャストコンクリート
部材の製造法に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for manufacturing a precast concrete member that can also be used as a formwork.
内部に閉鎖断面の薄肉中空部、あるいはｕ形の薄肉溝形
部等がある型枠を兼用した性用、あるいは梁用等のプレ
キャストコンクリート部材は、捨て型枠（構造計算にと
り入れない）としてではなく、構造躯体として用いる場
合は、その内面部分は後打ちコンクリートと一体化する
ように、凹凸面等となしてシアコネクターの機能を付与
しておく必要があった。したがって、これらのプレキャ
スト部材の製造では通常凹凸のついた内型枠を用いるこ
とが多いが、その脱型には困難を伴なう場合が少なくな
か′った。また、脱型が困難であることから、メタルラ
スを内型枠に用い埋め殺しにする提案もあるがコスト的
に高くなる欠点があった。Precast concrete members for double use as formwork or for beams, etc., which have a thin-walled hollow part with a closed cross section or a thin-walled U-shaped groove inside, cannot be used as disposable formwork (not included in structural calculations). When used as a structural frame, the inner surface had to be made with an uneven surface or the like to function as a shear connector so that it could be integrated with post-cast concrete. Therefore, in the production of these precast members, an inner mold with irregularities is often used, but demolding the mold is often accompanied by difficulty. In addition, since it is difficult to remove the mold, there has been a proposal to use metal lath as the inner mold and fill it in, but this has the disadvantage of increasing costs.
この発明はこれら問題に着目しなされたものである。そ
の目的は、脱型が容易で、様々な凹凸形状を形成してシ
アコネクターの機能を付与できる中空部あるいは溝形部
がある型枠を兼用しつるプレキャストコンクリート部材
を能率よく製造できる製造法を提案するにある。This invention was made by paying attention to these problems. The objective was to develop a manufacturing method that would allow for efficient manufacturing of precast concrete members that could be easily demolded and that could also be used as formworks with hollow or grooved sections that could be formed into various uneven shapes to provide the function of shear connectors. There are suggestions.
このプレキャストコンクリート部材の製造法は、閉鎖断
面の中空部あるいはＵ形断面の溝形部等がある型枠兼用
のプレキャストコンクリート部材の製造法において、中
空部あるいは溝形部内面を形成する内型枠に気体を圧入
した弾性袋体を用い、その袋体表面に凹凸を設けること
を特徴とする。This method for manufacturing precast concrete members is a method for manufacturing precast concrete members that also serve as formwork and has a hollow section with a closed cross section or a groove section with a U-shaped section. It is characterized by using an elastic bag into which gas is pressurized, and by providing unevenness on the surface of the bag.
この製造法ではゴムなどの弾性体を素材とした袋体を内
型枠として用いる。袋体は空気を圧入することにより膨
らみ、排出することにより収縮するので、コンクリート
打設時に空気を圧入しておき、コンクリート硬化後空気
を排出し、その体積を減少せしめて、容易に脱型するこ
とができ、袋体表面に凹凸を設けておくことにより部材
内表面に凹凸面を形成してシアコネクター機能を付与で
きる。この際、凹凸による脱型の困難さは収縮可能な袋
体の使用により解決され、深い凹凸等様々な形状、寸法
の凹凸を選択できる。In this manufacturing method, a bag made of an elastic material such as rubber is used as the inner formwork. The bag inflates when air is forced in and contracts when air is forced out, so air is forced in during concrete pouring, and after the concrete has hardened, the air is exhausted to reduce its volume and make it easier to demold. By providing an uneven surface on the bag surface, an uneven surface can be formed on the inner surface of the member to provide a shear connector function. At this time, the difficulty of demolding due to unevenness can be solved by using a shrinkable bag, and it is possible to select unevenness of various shapes and sizes, such as deep unevenness.
以下、実施例をあげ図面を用い説明する。 Examples will be described below with reference to the drawings.
第１図はこの製造法でつくった薄肉中空プレキャストコ
ンクリートの柱部材１である。第２図はこの柱部材１を
製造する型枠を示す。この型枠は在外型枠２と柱内型枠
３からなる。在外型枠２は内部に方形断面の空間４を有
し、その内部に４本の型方向に並列する柱主筋５とその
周囲フープ方向に配した帯筋６よりなる四角筒形をなす
組立鉄筋７が配置しである。Figure 1 shows a thin-walled hollow precast concrete column member 1 made by this manufacturing method. FIG. 2 shows a formwork for manufacturing this column member 1. This formwork consists of an overseas formwork 2 and an in-column formwork 3. The overseas formwork 2 has a space 4 with a rectangular cross section inside, and therein is an assembled reinforcing bar in the shape of a square cylinder consisting of four column main reinforcements 5 parallel to each other in the direction of the mold and tie reinforcements 6 arranged in the direction of the hoop around the pillars. 7 is the placement.
柱内型枠３はゴム製の袋体８からなり、表面に多数の方
形断面の突起９を設は凹凸面となしてあり、前記四角筒
形の組立鉄筋７の内側に挿入できる寸法の四角柱状をな
している。なお、袋体８の一端に空気を圧入あるいは排
出するパイプ１０が取付けである。The inner column formwork 3 consists of a rubber bag body 8, and the surface thereof has a large number of protrusions 9 with a rectangular cross section to form an uneven surface, and has a square shape that can be inserted into the inside of the rectangular cylindrical assembly reinforcing bar 7. It is columnar. Note that a pipe 10 for pressurizing or discharging air is attached to one end of the bag body 8.
この内外型枠３，２を用い柱部材１を製造するに当って
は、外型枠２内に組立鉄筋７を配した後、前記した内型
枠３をその内側に挿入し、空気を圧入し柱組立鉄筋７に
接し内外型枠３，２間にコンクリートを充填する。コン
クリート硬化後に、袋体８内の空気を排出して収縮せし
め脱型する。同時に外型枠を脱型して、内部にコンクリ
ートを充填できる方形閉鎖断面の中空部を有し、内面に
凹凸があってシアコネクター機能が付与しである、第１
図に示す型枠兼用の薄肉中空のプレキャストコンクリー
ト柱部材が得られる。In manufacturing the column member 1 using these inner and outer formworks 3, 2, after placing the assembly reinforcing bars 7 in the outer formwork 2, the above-mentioned inner formwork 3 is inserted inside and air is press-fitted. Concrete is filled between the inner and outer forms 3 and 2 in contact with the column assembly reinforcing bars 7. After the concrete hardens, the air inside the bag body 8 is discharged to cause it to contract and to be demolded. At the same time, the outer formwork is removed and the inside has a hollow section with a square closed cross section that can be filled with concrete, and the inner surface is uneven and has a shear connector function.
A thin, hollow precast concrete column member that can also be used as a formwork as shown in the figure is obtained.
第３，４図は別の実施例でつくった薄肉口形のプレキャ
ストコンクリートの梁部材１１およびこれを製造する型
枠を示す。この型枠は梁外型枠１２と梁内型枠１３から
なる。梁外型枠１２は内部に口形断面の溝部１４を有し
、その内側底部に溝長さ方向に並列する３本の梁主筋１
５およびフープ方向に配した帯筋１６よりなる四角筒形
をなす組立鉄筋１７が配置しである。Figures 3 and 4 show a thin-walled precast concrete beam member 11 made in another embodiment and a formwork for manufacturing the same. This formwork consists of a beam outer formwork 12 and a beam inner formwork 13. The external beam formwork 12 has a groove portion 14 with a mouth-shaped cross section inside, and three beam main reinforcements 1 are arranged in parallel in the groove length direction at the inner bottom of the groove portion 14.
5 and a hoop-oriented assembly reinforcing bar 17 having a rectangular cylindrical shape, which is made up of tie bars 16 arranged in the hoop direction.
梁内型枠１３は前記実施例と同様に空気を圧入したゴム
製袋体８からなり、表面に多数の突起９があり、前記四
角筒形の組立鉄筋１７内に挿入できる寸法の四角柱状を
なしている。The beam internal formwork 13 is made of a rubber bag 8 into which air is pressurized as in the previous embodiment, and has a large number of protrusions 9 on its surface, and has a rectangular prism shape with dimensions that can be inserted into the rectangular cylindrical assembly reinforcing bar 17. I am doing it.
この内外型枠１３．１２も前記の柱部材１の製造と同様
に、外型枠１２の内側に組立鉄筋１７を配置した後、そ
の内側に内型枠１３を挿入し、内外型枠１３．１２間に
コンクリートを充填し、硬化後に空気を排出して内型枠
を収縮させて内外型枠を脱型する。この結果、内部にコ
ンクリートを充填できる口形断面の溝形部を有し、内面
に凹凸があってシアコネクター機能が付与しである、第
３図に示す型枠兼用の薄肉のフープ方向にアバ形状の帯
筋が張出したプレキャストコンクリート梁部材が得られ
る。This inner/outer formwork 13.12 is also manufactured in the same way as the above-mentioned column member 1. After arranging the assembly reinforcing bars 17 inside the outer formwork 12, the inner formwork 13 is inserted inside the outer formwork 13. Fill the space between 12 and 12 with concrete, and after hardening, air is exhausted to shrink the inner formwork and the inner and outer forms are removed. As a result, it has a groove-shaped section with a mouth-shaped cross section that can be filled with concrete, and has an uneven inner surface that provides a shear connector function.As shown in Figure 3, it has a thin-walled hoop shape that doubles as a formwork. A precast concrete beam member with overhanging ties is obtained.
この発明は以上の通りであり、この製造法によると、内
面にシアコネクターの機能を有する型枠兼用のプレキャ
ストコンクリート部材を能率よく製造できる。The present invention is as described above, and according to this manufacturing method, it is possible to efficiently manufacture a precast concrete member that also serves as a formwork and has the function of a shear connector on its inner surface.
図面はこの発明の実施例を示すものであって、第１，２
図はこの製造法でつくった柱部材および製造するに用い
る型枠の斜視図、第３，４図はこの製造法でつくった梁
部材および製造するに用いる型枠の斜視図である。
１・・柱部材、２・・在外型枠、６・・柱内型枠、４・
・空間、５・・柱主筋、６・・帯筋、７・・組立鉄筋、
８・・袋体、９・・突起、１０・・パイプ、１１・・梁
部材、１２・・梁外型枠、１３・・梁内型枠、１４拳・
溝部、１５・・梁主筋、１６・・帯筋、１７・・組立鉄
筋。
第２図The drawings show embodiments of the invention, and include first and second embodiments.
The figure is a perspective view of a column member made by this manufacturing method and a formwork used for manufacturing it, and FIGS. 3 and 4 are perspective views of a beam member made by this manufacturing method and a formwork used for manufacturing it. 1. Column member, 2. Overseas formwork, 6. Inner column formwork, 4.
・Space, 5. Main column reinforcement, 6. Stir reinforcing bars, 7. Assembly reinforcing bars,
8. Bag body, 9. Protrusion, 10. Pipe, 11. Beam member, 12. External beam formwork, 13. Inner beam formwork, 14.
Groove, 15... Beam main reinforcement, 16... Stir reins, 17... Assembly reinforcing bars. Figure 2
Claims (1)
ある型枠兼用のプレキャストコンクリート部材の製造法
において、中空部あるいは溝形部内面を形成する内型枠
に気体を圧入した弾性袋体を用い、その袋体表面に凹凸
を設けることを特徴とするプレキャストコンクリート部
材の製造法。(1) In a method for manufacturing a precast concrete member that also serves as a formwork and has a hollow part with a closed cross section or a groove part with a ■-shaped cross section, elasticity is achieved by pressurizing gas into the inner formwork that forms the inner surface of the hollow part or groove part. A method for manufacturing a precast concrete member, characterized by using a bag and providing unevenness on the surface of the bag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7620786A JPS62233206A (en) | 1986-04-02 | 1986-04-02 | Manufacture of precast concrete member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7620786A JPS62233206A (en) | 1986-04-02 | 1986-04-02 | Manufacture of precast concrete member |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62233206A true JPS62233206A (en) | 1987-10-13 |
Family
ID=13598719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7620786A Pending JPS62233206A (en) | 1986-04-02 | 1986-04-02 | Manufacture of precast concrete member |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62233206A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0464665A (en) * | 1990-07-02 | 1992-02-28 | Daisue Kensetsu Kk | Manufacture of u-type concrete member |
| JPH0464666A (en) * | 1990-07-02 | 1992-02-28 | Daisue Kensetsu Kk | Molding form unit for hollow concrete member and molding method |
| JPH04153005A (en) * | 1990-10-18 | 1992-05-26 | Nippon Kaiser Kk | Manufacture of precast concrete beam |
| JPH0516131A (en) * | 1991-07-16 | 1993-01-26 | Kajima Corp | Manufacture of precast concrete component |
| JPH0788826A (en) * | 1993-09-28 | 1995-04-04 | Toyo Sangyo Kk | Preparation of inside hollow beam and bag body used for preparation of inside hollow beam |
| JP2013256022A (en) * | 2012-06-11 | 2013-12-26 | Kyocera Communication Systems Co Ltd | Outer frame member |
| JP2020094401A (en) * | 2018-12-12 | 2020-06-18 | 鹿島建設株式会社 | Construction method of structure |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5745646A (en) * | 1980-08-29 | 1982-03-15 | Fujitsu Ltd | Information processing system |
-
1986
- 1986-04-02 JP JP7620786A patent/JPS62233206A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5745646A (en) * | 1980-08-29 | 1982-03-15 | Fujitsu Ltd | Information processing system |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0464665A (en) * | 1990-07-02 | 1992-02-28 | Daisue Kensetsu Kk | Manufacture of u-type concrete member |
| JPH0464666A (en) * | 1990-07-02 | 1992-02-28 | Daisue Kensetsu Kk | Molding form unit for hollow concrete member and molding method |
| JPH04153005A (en) * | 1990-10-18 | 1992-05-26 | Nippon Kaiser Kk | Manufacture of precast concrete beam |
| JPH0575562B2 (en) * | 1990-10-18 | 1993-10-20 | Nippon Kaizaa Kk | |
| JPH0516131A (en) * | 1991-07-16 | 1993-01-26 | Kajima Corp | Manufacture of precast concrete component |
| JPH0788826A (en) * | 1993-09-28 | 1995-04-04 | Toyo Sangyo Kk | Preparation of inside hollow beam and bag body used for preparation of inside hollow beam |
| JP2013256022A (en) * | 2012-06-11 | 2013-12-26 | Kyocera Communication Systems Co Ltd | Outer frame member |
| JP2020094401A (en) * | 2018-12-12 | 2020-06-18 | 鹿島建設株式会社 | Construction method of structure |
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