JPH0755044Y2 - Formwork for forming prestressed concrete products - Google Patents
Formwork for forming prestressed concrete productsInfo
- Publication number
- JPH0755044Y2 JPH0755044Y2 JP1990106614U JP10661490U JPH0755044Y2 JP H0755044 Y2 JPH0755044 Y2 JP H0755044Y2 JP 1990106614 U JP1990106614 U JP 1990106614U JP 10661490 U JP10661490 U JP 10661490U JP H0755044 Y2 JPH0755044 Y2 JP H0755044Y2
- Authority
- JP
- Japan
- Prior art keywords
- forming
- mold
- cushioning material
- concrete product
- formwork
- 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 - Lifetime
Links
Landscapes
- Moulds, Cores, Or Mandrels (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
Description
【考案の詳細な説明】 （産業上の利用分野） この考案は、表面に多数の凹凸部を有するプレストレス
コンクリート製品形成用型枠に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a mold for forming a prestressed concrete product having a large number of uneven portions on its surface.
（従来の技術） 従来、プレストレスコンクリート製品を形成する際に
は、他のコンクリート製品と同様に合成樹脂、金属、そ
の他の材料で型枠を構築して、ストレスをかけ、コンク
リートを打設していた。この際に製品に凹凸がある場合
でも特別な措置は取らずに、平坦な部分と同様に型枠を
形成していた。(Prior Art) Conventionally, when forming a prestressed concrete product, a formwork is constructed by using synthetic resin, metal, and other materials, stress is applied, and concrete is placed, as with other concrete products. Was there. At this time, even if the product had irregularities, no special measures were taken, and the form was formed similarly to the flat part.
（考案が解決しようとする課題） 前記従来の技術では、プレストレスコンクリート製品で
は脱型時に製品の縮み（5mにつき、ストレスをかけた方
向に5mm程度縮む）を生じる為に製品に凸部がある場合
に、該凸部は型枠の一側に強く押圧し、該凸部を破損す
るおそれが生じる問題点があった。特に複数の凸部が連
続して設けられた製品では顕著に生じていた。(Problems to be solved by the invention) In the above-described conventional technology, the prestressed concrete product has a convex portion on the product when it is released from the mold (it contracts about 5 mm in the stressed direction about 5 mm). In this case, there is a problem in that the convex portion is strongly pressed against one side of the mold and may damage the convex portion. In particular, it was remarkable in a product in which a plurality of convex portions were continuously provided.
また、プレストレス方向と直交する方向にプレストレス
製品に凹部がある場合には、型枠の脱型が困難となる問
題点もあった。Further, when the prestressed product has a concave portion in a direction orthogonal to the prestressing direction, it is difficult to remove the mold from the mold.
（課題を解決する為の手段） 然るにこの考案は、外型枠内に、プレストレスコンクリ
ート製品の凸部形成部を移動自在に介装し、コンクリー
トが縮む際にと凸部形成部が当接する側に、緩衝材を介
装し、かつ型枠の凹部形成部表面に緩衝材を貼着したの
で、前記課題を解決した。(Means for Solving the Problem) However, in this invention, the convex portion forming portion of the prestressed concrete product is movably interposed in the outer form, and the convex portion forming portion abuts when the concrete shrinks. Since the cushioning material is provided on the side and the cushioning material is attached to the surface of the concave portion forming portion of the mold, the above-mentioned problem is solved.
即ちこの考案は、表面に多数の凹凸部を有するプレスト
レスコンクリート製品を形成する際に使用する型枠にお
いて、所定の外型枠内に、コンクリート製品の凸部形成
部を、コンクリートが縮む方向に移動自在に介装し、前
記外型枠内で、コンクリート製品が縮む際に前記凸部形
成部が当接する側に、前記凸部形成部の内面と面一とな
るように緩衝材を介装し、前記外型枠のコンクリート製
品の凹部形成部分の全面に亘って緩衝材を貼着したプレ
ストレスコンクリート製品形成用型枠である。また緩衝
材は、コンクリートの凸部に接する位置に介装したプレ
ストレスコンクリート製品形成用型枠である。That is, this invention is a formwork used when forming a prestressed concrete product having a large number of irregularities on the surface, and in a predetermined outer formwork, a projecting part forming part of the concrete product is formed in a direction in which the concrete shrinks. A cushioning material is movably interposed, and on the side of the outer mold that the convex portion forming portion abuts when the concrete product shrinks, a cushioning member is provided so as to be flush with the inner surface of the convex portion forming portion. And, it is a prestressed concrete product forming formwork in which a cushioning material is adhered over the entire surface of the concave part forming portion of the concrete product of the outer formwork. The cushioning material is a prestressed concrete product forming mold which is interposed at a position in contact with the convex portion of the concrete.
前記において緩衝材は、硬質ゴム（硬度70程度）等が考
えられる。また凹部型枠の表面貼着する緩衝材は厚さ２
〜3mm程度に貼着するが、更に厚く貼着することも可能
である。In the above, as the cushioning material, hard rubber (hardness about 70) or the like can be considered. Also, the cushioning material to be attached to the surface of the concave mold has a thickness of 2
It is applied to about 3 mm, but it can be applied thicker.
（作用） この考案は、型枠のプレストレスコンクリート製品の凸
部形成部に緩衝材を介装したので、脱型時にコンクリー
ト製品が縮む際にも、コンクリートの凸部の一側は型枠
の緩衝材に押圧されるが、凸部は破損しない。(Function) In this invention, since the cushioning material is interposed in the convex portion forming portion of the prestressed concrete product of the formwork, even when the concrete product shrinks during demolding, one side of the convex portion of the concrete is It is pressed by the cushioning material, but the protrusions are not damaged.
また、この考案は、型枠のコンクリート製品の凸部形成
部の表面に緩衝材を貼着したので、脱型時に、コンクリ
ートが縮んだ際にもコンクリート製品の凹部と型枠の一
側が強く当接するが、緩衝材により、容易に脱型でき
る。Further, in this invention, since the cushioning material is adhered to the surface of the convex portion forming portion of the concrete product of the formwork, the concave portion of the concrete product and the one side of the formwork strongly contact with each other even when the concrete shrinks at the time of demolding. Although it comes into contact, it can be easily demolded by the cushioning material.
（実施例） この考案の実施例を図面に基づき説明する。(Example) The Example of this invention is described based on drawing.
第１図のような化粧柱１を形成する際に、ストレスをか
ける方向に連続した凸部２、２を構築する際の型枠を第
２図及び第３図に示す。外型枠３に、凸部２、２の形状
に合わせて形成した硬質ゴム製の凸部形成部５を、長さ
方向（ストレスをかける方向、コンクリートが縮む方
向）に摺動可能に、介装する。また、ストレスをかける
方向（脱型時にコンクリートが縮む方向）に、リング状
の緩衝材６を介装し、凸部用型枠７を形成する。図示の
ように緩衝材６の内面6aは凸部形成部５の内面5a及び外
形枠３の内面3aと面一に形成されている。FIGS. 2 and 3 show a mold for constructing the convex portions 2 and 2 which are continuous in the direction in which stress is applied when forming the decorative column 1 as shown in FIG. A convex portion forming portion 5 made of hard rubber formed in conformity with the shapes of the convex portions 2 and 2 is slidable on the outer formwork 3 in the length direction (the direction in which stress is applied, the direction in which concrete shrinks). To wear. In addition, a ring-shaped cushioning material 6 is interposed in the direction in which stress is applied (the direction in which concrete shrinks during demolding), and the convex form frame 7 is formed. As shown in the figure, the inner surface 6a of the cushioning material 6 is formed flush with the inner surface 5a of the protrusion forming portion 5 and the inner surface 3a of the outer frame 3.
前記化粧柱１のストレスをかける方向の凹条８、８を形
成する型枠を第４図（ａ）（ｂ）に示す。外型枠３の凹
部形成部の表面を全面に亘って緩衝材９、９を貼着し、
凹部形成用型枠10を形成する。FIGS. 4 (a) and 4 (b) show a frame for forming the concave streaks 8 in the stress applying direction of the decorative column 1. Cushioning materials 9, 9 are adhered over the entire surface of the recess forming portion of the outer mold 3,
A recess forming mold 10 is formed.
また、前記化粧柱１のストレスをかける方向と直交する
方向のリング状の凹部11、11を形成する型枠を第５図に
示す。外型枠３の凹部11形成部の表面を全面に亘って緩
衝材12、12を貼着し、リング状の凹部形成用型枠13を形
成する。Further, FIG. 5 shows a mold for forming the ring-shaped recesses 11, 11 in the direction orthogonal to the stress-applying direction of the decorative column 1. Cushioning materials 12, 12 are attached over the entire surface of the recessed portion 11 forming portion of the outer mold 3 to form a ring-shaped recessed portion forming frame 13.
前記のように形成した外枠３、凸部形成用型枠７、凹部
形成用型枠10、13により、プレストレスコンクリート製
品形成用の型枠14を形成する。A mold 14 for forming a prestressed concrete product is formed by the outer frame 3, the convex forming mold 7, and the concave forming molds 10 and 13 which are formed as described above.
前記において、型枠14は、緩衝材を介装あるいは貼着し
た状態で、化粧柱１の形成寸法となっている。In the above description, the mold 14 has the dimension of forming the decorative column 1 with a cushioning material interposed or attached.
次に、前記実施例に基づく型枠の使用について述べる。Next, the use of the formwork according to the above embodiment will be described.
型枠14に鉄筋（図示していない）を組み、ストレスをか
けながらコンクリートを打設する。コンクリート固化
後、型枠14を脱型する。この際に、コンクリートはスト
レスをかけた方向に縮むが、凸部２、２の縮む側2a、2a
は脱型時に型枠14の凸部形成部５の当接部分と強く当る
が、凸部形成部５及び緩衝材６の作用により破損するお
それはない。また、化粧柱１の凹部11の一側11aは型枠1
4の緩衝材12と強く押圧するが、緩衝材12により脱型は
可能である。Reinforcing bars (not shown) are attached to the form 14 and concrete is poured while applying stress. After the concrete is solidified, the mold 14 is removed. At this time, the concrete shrinks in the stressed direction, but the shrinking sides 2a, 2a of the protrusions 2, 2
When the mold is released from the mold, it strongly hits the abutting portion of the convex portion forming portion 5 of the mold frame 14, but there is no fear of damage due to the action of the convex portion forming portion 5 and the buffer material 6. In addition, the one side 11a of the concave portion 11 of the decorative column 1 is a mold 1
Although it is strongly pressed against the cushioning material 12 of 4, the mold can be removed by the cushioning material 12.
前記実施例において、凸部形成用型枠７で緩衝材５、６
を別々に介装したが、一体に形成して介装することもで
きる。また、リング状の緩衝材６を介装すれば、凸部形
成部５の部分は、外型枠３と摺動可能であれば、合成樹
脂、金属等のその他の材料から形成することもできる。In the above-described embodiment, the cushioning materials 5, 6 are formed by the convex forming mold 7.
Although they are separately provided, they may be integrally formed and provided. In addition, if the ring-shaped cushioning material 6 is interposed, the portion of the convex portion forming portion 5 can be formed of other material such as synthetic resin or metal as long as it can slide with the outer formwork 3. .
また、前記実施例において、凹部形成用型枠13で、緩衝
材12を凹部11形成部の表面を全面に亘って緩衝材12を貼
着したが、脱型時に凹部11aが強く当る側にのみ緩衝材1
2を貼着することもできる。Further, in the above-described embodiment, the cushioning material 12 is attached to the recessed portion forming frame 13 over the entire surface of the recessed portion 11 forming portion, but only on the side where the recessed portion 11a strongly abuts at the time of demolding. Cushioning material 1
You can also attach 2.
（考案の効果） この考案は、外型枠内に、凸部形成部をコンクリートが
縮む方向に移動自在に介装すると共に、内面が凸部形成
部と面一となるように緩衝材を介装し、かつ凹部形成用
型枠の表面の全面に亘って緩衝材を貼着したので、脱型
時にコンクリート製品の凸部や隅部が破損するおそれも
なく、かつ型枠の脱型が容易となる。従って、化粧柱
等、多くの細かい凹凸面を有するプレストレスコンクリ
ート製品を高い完成精度で提供することができる効果が
ある。また遠心成形用など密封状の型枠に使用した場合
でも同様の効果がある。(Effects of the Invention) In this invention, the convex portion forming portion is movably provided in the outer mold in the direction in which the concrete shrinks, and the cushioning material is interposed so that the inner surface is flush with the convex portion forming portion. Since the cushioning material is attached and the cushioning material is attached over the entire surface of the mold for forming recesses, there is no risk of damage to the convex parts or corners of the concrete product during mold release, and mold release is easy. Becomes Therefore, there is an effect that a prestressed concrete product having many fine uneven surfaces such as a decorative column can be provided with high completion accuracy. Further, the same effect can be obtained when it is used in a hermetically sealed form such as for centrifugal molding.
第１図はこの考案の実施例で形成される化粧柱の正面
図、第２図はこの考案の実施例の凸部形成用型枠の縦断
面図、第３図は第２図中AA線における横断面図、第４図
（ａ）は同じく凹部形成用型枠の横断面図、第４図
（ｂ）は第４図（ａ）の部分拡大横断面図、第５図は同
じく凹部形成用型枠の部分縦断面図である。 １……化粧柱、２……凸部（化粧柱） ３……外型枠 ５……凸部形成部 ６、９、12……緩衝材 ７……凸部形成用型枠、８、11……凹部（化粧柱） 10、13……凹部形成用型枠 14……プレストレスコンクリート製品形成用型枠FIG. 1 is a front view of a decorative column formed in an embodiment of the present invention, FIG. 2 is a vertical cross-sectional view of a convex portion forming mold of an embodiment of the present invention, and FIG. 3 is a line AA in FIG. 4A is a horizontal cross-sectional view of a recess forming mold, FIG. 4B is a partially enlarged cross-sectional view of FIG. 4A, and FIG. It is a partial longitudinal cross-sectional view of a mold for use. 1 ... Decorative column, 2 ... Convex part (decorative column) 3 ... Outer mold form 5 ... Convex part forming part 6, 9, 12 ... Cushioning material 7 ... Convex part forming frame, 8, 11 …… Recesses (decorative columns) 10, 13 …… Recess forming form 14 …… Prestressed concrete product forming form
Claims (2)
コンクリート製品を形成する際に使用する型枠におい
て、所定の外型枠内に、コンクリート製品の凸部形成部
を、コンクリートが縮む方向に移動自在に介装し、前記
外型枠内で、コンクリート製品が縮む際に前記凸部形成
部が当接する側に、前記凸部形成部の内面と面一となる
ように緩衝材を介装し、前記外型枠のコンクリート製品
の凹部形成部分の全面に亘って緩衝材を貼着したプレス
トレスコンクリート製品形成用型枠1. A formwork used for forming a prestressed concrete product having a large number of irregularities on the surface thereof, wherein a protrusion forming part of the concrete product is formed in a predetermined outer formwork in a direction in which the concrete shrinks. A cushioning material is movably interposed, and on the side of the outer mold that the convex portion forming portion abuts when the concrete product shrinks, a cushioning member is provided so as to be flush with the inner surface of the convex portion forming portion. And a mold for forming a prestressed concrete product in which a cushioning material is adhered over the entire surface of the recess forming portion of the concrete product of the outer mold
置に介装した請求項１記載のプレストレスコンクリート
製品形成用型枠2. The prestressed concrete product forming mold according to claim 1, wherein the cushioning material is provided at a position in contact with the convex portion of the concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990106614U JPH0755044Y2 (en) | 1990-10-11 | 1990-10-11 | Formwork for forming prestressed concrete products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990106614U JPH0755044Y2 (en) | 1990-10-11 | 1990-10-11 | Formwork for forming prestressed concrete products |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0464105U JPH0464105U (en) | 1992-06-01 |
| JPH0755044Y2 true JPH0755044Y2 (en) | 1995-12-20 |
Family
ID=31852769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990106614U Expired - Lifetime JPH0755044Y2 (en) | 1990-10-11 | 1990-10-11 | Formwork for forming prestressed concrete products |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0755044Y2 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2533345B2 (en) * | 1987-12-29 | 1996-09-11 | 東急建設株式会社 | Form for half PCa board |
-
1990
- 1990-10-11 JP JP1990106614U patent/JPH0755044Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0464105U (en) | 1992-06-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| EXPY | Cancellation because of completion of term |