JP2003191217A - Form for producing concrete segment - Google Patents
Form for producing concrete segmentInfo
- Publication number
- JP2003191217A JP2003191217A JP2001391383A JP2001391383A JP2003191217A JP 2003191217 A JP2003191217 A JP 2003191217A JP 2001391383 A JP2001391383 A JP 2001391383A JP 2001391383 A JP2001391383 A JP 2001391383A JP 2003191217 A JP2003191217 A JP 2003191217A
- Authority
- JP
- Japan
- Prior art keywords
- bottom plate
- plate form
- segment
- mold
- concrete segment
- 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
Landscapes
- Lining And Supports For Tunnels (AREA)
- Moulds, Cores, Or Mandrels (AREA)
Abstract
Description
【発明の詳細な説明】
【０００１】
【発明の属する技術分野】本発明は、コンクリートセグ
メントの製造用型枠に関するものである。
【０００２】
【従来の技術】コンクリートセグメントの製造用型枠１
は、図４に示すように、底板型枠２の円弧状の底板２ａ
の上に、一対の円弧状の周方向側板型枠３，３と、一対
の直線状の端板型枠４，４を額縁状に組み合わせて構成
され、上方からコンクリートを打設（平打ち）すること
により、コンクリートセグメントＳが製造される。
【０００３】
【発明が解決しようとする課題】コンクリートセグメン
トの側面及び端面に接合等のための凹凸が設けられてい
る場合、周方向側板型枠３と端板型枠４の内側面には、
それぞれ凹凸部が複雑に形成されており、脱型する場合
には、型枠をスライドさせるなどする必要があり、多く
の時間と手間を要し、また、断面欠損を招き、製品とし
て用いることが不可能となる事態を招いていた。
【０００４】本発明は、このような問題を解消すべくな
されたもので、その目的は、比較的簡単な構成で低コス
トの型枠により、複雑な凹凸を両側面及び両端面に有す
るコンクリートセグメントの脱型を簡単な作業で短時間
に実施することができると共に、複雑な凹凸を両側面及
び両端面に有するコンクリートセグメントを断面欠損を
生ずることなく製造できるコンクリートセグメントの製
造用型枠を提供することにある。
【０００５】
【課題を解決するための手段】本発明は、底板型枠の底
板上に周方向側板型枠と端板型枠を額縁状に組み合わせ
てなるコンクリートセグメントの製造用型枠であって、
底板型枠の底板の端板型枠が設置される部分が端板型枠
の長手方向に平行な折曲線により下方に折曲げられてい
ることを特徴とするコンクリートセグメントの製造用型
枠である。
【０００６】図１、図４に示すように、底板型枠の底板
と周方向側板型枠は、同じ曲率の円弧状であり、例え
ば、底板型枠は中央部のみが支持され、底板の端板型枠
が設置される両端部は、下方に撓むことができる自由端
部とされ、この自由端部の適当な位置に折曲線を設け、
この折曲線で折り曲げて変形部を形成する。この変形部
は、底板とほぼ同じの曲率の円弧であり、底板に対して
下方に所定の傾斜角で傾斜することになる。型枠を組み
付ければ、変形部が上方に弾性変形し、底板に連続する
円弧状の型枠底部を形成することになる。
【０００７】また、図１に示すように、自由端部におけ
る端板型枠の内側面の下端が接当する位置Ａを折曲線と
し、自由端部の先端部を下方に折り曲げられた変形部と
し、脱型に際し、変形部が下方に撓み、更に、自由端部
が下方に撓むようにするのが好ましい。この場合、変形
部は端板型枠の下にあり、コンクリートセグメントの形
状に影響を与えることがない。
【０００８】以上のような構成において、コンクリート
の打設に際し、前記変形部は、端板型枠を周方向側板型
枠にボルト・ナット等で組み付けることで上方に弾性変
形し、図２(a) に示すように、変形部が底板に連続した
円弧状をなし、正規の形状の型枠となる。この状態でコ
ンクリートを打設すれば、正規の形状のコンクリートセ
グメントが製造される。
【０００９】養生後の脱型に際しては、周方向側板型枠
を取り外すと、それまで締結されていた端板型枠が解放
され、底板に設けた変形部は、端板型枠が解放されたこ
とにより、図２(b) に示すように、その自重で下に落ち
込むと共に、スプリング効果（スプリングバック）ａに
よりＡ点を中心にして円軌道を描いて下方に撓み、端板
型枠の内側面がコンクリート表面から自然に剥離する。
更に、図３に示すように、底板の自由端部は、スプリン
グ効果ｂによりＢ点を中心にして円軌道を描いて下方に
更に撓み、底板とコンクリートセグメントとが自然に分
離される。
【００１０】
【発明の実施の形態】以下、本発明を図示する実施の形
態に基づいて説明する。図１は、本発明のコンクリート
セグメントの製造用型枠の一実施形態を左右に分割して
示したものである。図２、図３は、その脱型時の状態を
順に示したものである。図４は、型枠の全体構成を示し
たものである。
【００１１】図４に示すように、コンクリートセグメン
トの製造用型枠１は、底板型枠２の円弧状の底板２ａの
上に、一対の円弧状の周方向側板型枠３，３と、一対の
端板型枠４，４を額縁状に組み合わせて構成されてい
る。底板型枠２の底板２ａは基台２ｂを介して支持架台
５に支持されている。底板２ａは基台２ｂよりも長く形
成され、従って端板型枠４が設置される底板２ａの両端
の自由端部１０はＢ点を中心にして下方に撓むことがで
きるようにされている。
【００１２】図１に示すように、左右の端板型枠４，４
の内側面には、凹部成型突出部４ａ、凸部成型溝部４ｂ
がそれぞれ形成されており、コンクリートセグメントＳ
の両端面に互いに嵌合する凹凸が形成される。一対の周
方向側板型枠３，３の内面にも同様に突出部と溝部が形
成されている。端板型枠４、周方向側板型枠３には、そ
の他、シール溝のための突出部が形成されている。
【００１３】周方向側板型枠３は底板２ａの上に設置さ
れ、ボルト・ナット等で締結される。端板型枠４も底板
２ａの上に設置され、ボルト・ナット等で締結される。
さらに、端板型枠４は一対の周方向側板型枠３，３に挟
まれるように配置され、周方向側板型枠３にボルト・ナ
ットで締結される。
【００１４】このような構成の型枠１において、本発明
では、図１に示すように、底板２ａの表面に端板型枠４
の内側面の下端が接当する位置Ａが折曲線となるように
曲げ加工して端板型枠４が設置される底板２ａの先端部
１１を予め下方に折り曲げておく。この先端部すなわち
変形部１１は、底板２ａとほぼ同じ曲率の円弧状であ
り、底板２ａに対して下方に所定の傾斜角で傾斜するこ
とになる。傾斜角は数°であり、適宜決定される。
【００１５】コンクリートの打設に際し、変形部１１
は、端板型枠４を周方向側板型枠３にボルト・ナット等
で組み付けることで上方に弾性変形し、図２(a) に示す
ように、変形部１１が底板２ａに連続した円弧状をな
し、正規の形状の型枠１となる。この状態でコンクリー
トを打設すれば、正規の形状のコンクリートセグメント
Ｓが製造される。
【００１６】養生後の脱型に際しては、周方向側板型枠
３を取り外す。この周方向側板型枠３を取り外すと、そ
れまで締結されていた端板型枠４が解放される。その
後、底板２ａに設けた変形部１１は、端板型枠４が解放
されたことにより、図２(b) に示すように、その自重で
下に落ち込むと共に、スプリング効果（スプリングバッ
ク）ａによりＡ点を中心にして円軌道を描いて下方に撓
み、端板型枠４の内側面がコンクリート表面から自然に
剥離する。
【００１７】更に、図３に示すように、底板２ａの自由
端部１０は、スプリング効果ｂによりＢ点を中心にして
円軌道を描いて下方に撓み、底板２ａとコンクリートセ
グメントＳとが自然に分離される。
【００１８】凹凸部が複雑に形成されたコンクリートセ
グメントＳの製造用型枠の脱型に際し、従来のように型
枠をスライドさせるなど、多くの時間と手間を必要とす
ることがなく、簡単な作業で短時間に脱型を行うことが
できると共に、複雑な凹凸部を有するコンクリートセグ
メントＳを断面欠損を生ずることなく製造できる。
【００１９】なお、図示例は、位置Ａを折曲線としてい
るが、これに限らず、Ａ〜Ｂ間あるいは位置Ｂに折曲線
を設けることもできる。また、図示例の型枠装置に限ら
ず、その他の構成の型枠装置にも本発明を適用できるこ
とは言うまでもない。
【００２０】
【発明の効果】(1) 本発明は、底板型枠の底板の端板型
枠が設置される部分を端板型枠の長手方向に平行な折曲
線により下方に折曲げて変形部を形成し、脱型に際し、
前記変形部が端板型枠の自重やスプリング効果により下
方に撓み、端板型枠の内側面がコンクリート表面から自
然に剥離し、更に、底板の自由端部がスプリング効果に
より下方に更に撓み、底板とコンクリートセグメントと
が自然に分離されるようにしたため、複雑な凹凸を両側
面及び両端面に有するコンクリートセグメントの脱型を
簡単な作業で短時間に実施することができると共に、複
雑な凹凸を両側面及び両端面に有するコンクリートセグ
メントを断面欠損を生ずることなく製造することができ
る。
【００２１】(2) 型枠は、底板を曲げ加工して変形部を
形成するだけでよいため、比較的簡単な構成で低コスト
の型枠とすることができる。また、既存の型枠を利用す
ることもできる。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a form for producing concrete segments. [0002] Formwork 1 for producing concrete segments
Is an arc-shaped bottom plate 2a of the bottom plate form 2 as shown in FIG.
A pair of arc-shaped circumferential side plate forms 3, 3 and a pair of linear end plate forms 4, 4 are combined in a frame shape, and concrete is poured from above (flat casting). Thereby, the concrete segment S is manufactured. [0003] In the case where the side and end faces of the concrete segment are provided with irregularities for joining and the like, the inner side faces of the circumferential side plate form 3 and the end plate form 4 are
The concave and convex portions are formed in a complicated manner, and when removing the mold, it is necessary to slide the mold, etc., which requires a lot of time and labor, and also causes a cross-sectional defect, so that it may be used as a product. This has led to an impossible situation. The present invention has been made to solve such a problem, and an object of the present invention is to provide a concrete segment having complicated irregularities on both side surfaces and both end surfaces by a relatively simple structure and a low-cost mold. The present invention provides a concrete segment forming mold capable of removing a mold in a short time by a simple operation and producing a concrete segment having complicated irregularities on both side surfaces and both end surfaces without generating a sectional defect. It is in. SUMMARY OF THE INVENTION The present invention is a formwork for manufacturing a concrete segment comprising a frame-like combination of a circumferential side plate formwork and an end plate formwork on a bottom plate of a bottom plate formwork. ,
A part for forming an end plate form of a bottom plate of a bottom plate form is bent downward by a folding curve parallel to a longitudinal direction of the end plate form, and is a form for manufacturing a concrete segment. . As shown in FIG. 1 and FIG. 4, the bottom plate and the circumferential side plate form of the bottom plate form are circular arcs having the same curvature. For example, the bottom plate form is supported only at the center portion and the end of the bottom plate. Both ends where the plate form is installed are free ends that can be bent downward, and a folding curve is provided at an appropriate position of this free end,
A bent portion is formed by bending along the bending curve. The deformed portion is an arc having substantially the same curvature as the bottom plate, and is inclined downward at a predetermined inclination angle with respect to the bottom plate. When the mold is assembled, the deformed portion is elastically deformed upward to form an arc-shaped mold bottom continuous with the bottom plate. As shown in FIG. 1, a position A at which the lower end of the inner side surface of the end plate form comes into contact with the free end is a bent curve, and the tip of the free end is bent downward. It is preferable that the deformed portion bends downward and the free end bends downward when the mold is released. In this case, the deformed part is below the end plate form and does not affect the shape of the concrete segment. In the above construction, when the concrete is poured, the deformed portion is elastically deformed upward by assembling the end plate form to the circumferential side plate form with bolts and nuts, etc. As shown in (2), the deformed portion forms an arc shape that is continuous with the bottom plate, resulting in a mold having a regular shape. If concrete is poured in this state, a concrete segment having a regular shape is manufactured. [0009] Upon removal from the mold after curing, when the circumferential side plate form is removed, the end plate form that has been fastened is released, and the end plate form of the deformed portion provided on the bottom plate is released. As a result, as shown in FIG. 2 (b), as shown in FIG. 2 (b), it falls down by its own weight, and it is bent downward in a circular orbit around the point A by the spring effect (spring back) a. The sides spontaneously separate from the concrete surface.
Further, as shown in FIG. 3, the free end of the bottom plate is further bent downward in a circular orbit around the point B by a spring effect b, whereby the bottom plate and the concrete segment are naturally separated. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on an embodiment shown in the drawings. FIG. 1 shows one embodiment of a form for manufacturing a concrete segment of the present invention, which is divided into right and left. 2 and 3 sequentially show the state at the time of removing the mold. FIG. 4 shows the entire configuration of the mold. As shown in FIG. 4, a mold 1 for manufacturing a concrete segment comprises a pair of circular circumferential side plate forms 3 and 3 on a circular bottom plate 2a of a bottom plate form 2. Are assembled in a frame shape. A bottom plate 2a of the bottom plate form 2 is supported by a support base 5 via a base 2b. The bottom plate 2a is formed longer than the base 2b, so that the free ends 10 at both ends of the bottom plate 2a on which the end plate form 4 is installed can be bent downward about the point B. . As shown in FIG. 1, the left and right end plate forms 4, 4
Are formed on the inner side surface of the projection 4a and the projection molding groove 4b.
Are formed respectively, and the concrete segment S
Are formed on both end surfaces of each of them. Protrusions and grooves are similarly formed on the inner surfaces of the pair of circumferential side plate forms 3 and 3. In addition, the end plate form 4 and the circumferential side plate form 3 are formed with protrusions for seal grooves. The circumferential side plate form 3 is installed on the bottom plate 2a and fastened with bolts and nuts. The end plate form 4 is also installed on the bottom plate 2a and fastened with bolts and nuts.
Further, the end plate form 4 is disposed so as to be sandwiched between the pair of circumferential side plate forms 3 and 3 and fastened to the circumferential side plate form 3 with bolts and nuts. In the form 1 having such a structure, in the present invention, as shown in FIG. 1, the end plate form 4 is formed on the surface of the bottom plate 2a.
The end portion 11 of the bottom plate 2a on which the end plate formwork 4 is installed is bent in advance so that the position A where the lower end of the inner side surface of the bottom plate abuts becomes a bent curve. The tip portion, that is, the deformed portion 11 has an arc shape having substantially the same curvature as the bottom plate 2a, and is inclined downward at a predetermined inclination angle with respect to the bottom plate 2a. The inclination angle is several degrees and is determined as appropriate. When the concrete is poured, the deformed portion 11
As shown in FIG. 2 (a), the end plate form 4 is elastically deformed upward by attaching the end plate form 4 to the circumferential side plate form 3 with bolts and nuts, and as shown in FIG. To form a mold 1 having a regular shape. If concrete is cast in this state, a concrete segment S having a regular shape is manufactured. When removing the mold after curing, the circumferential side plate form 3 is removed. When the circumferential side plate form 3 is removed, the end plate form 4 that has been fastened is released. After that, as the end plate form 4 is released, the deformed portion 11 provided on the bottom plate 2a falls down by its own weight as shown in FIG. 2B, and the spring effect (spring back) a The inner surface of the end plate form 4 is naturally separated from the concrete surface by bending downward in a circular orbit around the point A. Further, as shown in FIG. 3, the free end portion 10 of the bottom plate 2a is bent downward in a circular orbit around the point B by a spring effect b, so that the bottom plate 2a and the concrete segment S are naturally formed. Separated. When removing the mold for manufacturing the concrete segment S in which the concavo-convex portions are formed in a complicated manner, a large amount of time and labor is not required, such as sliding the mold as in the prior art, and the method is simple. It is possible to remove the mold in a short time in the operation, and it is possible to manufacture the concrete segment S having a complicated uneven portion without causing a sectional defect. In the illustrated example, the position A is a polygonal curve. However, the present invention is not limited to this, and a polygonal curve may be provided between A and B or at the position B. Further, it goes without saying that the present invention can be applied not only to the formwork device in the illustrated example but also to a formwork device having another configuration. According to the present invention, the portion of the bottom plate on which the end plate form is installed is bent downward by a folding curve parallel to the longitudinal direction of the end plate form. Form the part, when removing the mold,
The deformed portion bends downward due to its own weight and spring effect of the end plate form, the inner side surface of the end plate form naturally peels off from the concrete surface, and further, the free end of the bottom plate further bends downward due to the spring effect, Since the bottom plate and the concrete segment were naturally separated, the concrete segment having complex irregularities on both sides and both end surfaces can be easily removed in a short time with a simple operation, and the complicated irregularities can be removed. Concrete segments having both side surfaces and both end surfaces can be manufactured without causing a sectional defect. (2) Since it is only necessary to form the deformed portion by bending the bottom plate, the mold can be a low-cost mold with a relatively simple configuration. In addition, existing molds can be used.
【図面の簡単な説明】
【図１】本発明のコンクリートセグメントの製造用型枠
の一実施形態を左右に分割して示した正面図である。
【図２】図１の型枠の正面図であり、(a) はコンクリー
ト打設後の脱型時の初期の状態、(b) は脱型時の途中の
状態を示す。
【図３】図１の型枠の脱型時の最後の状態を示す正面図
である。
【図４】図１の型枠の全体構成を示す斜視図である。
【符号の説明】
Ｓ……コンクリートセグメント
Ａ…折曲線
Ｂ…自由端部の起点
１……製造用型枠
２……底板型枠
２ａ…底板
２ｂ…基台
３……周方向側板型枠
４……端板型枠
５……支持架台
１０……底板の自由端部
１１……底板の先端部（変形部）BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view showing an embodiment of a mold for manufacturing a concrete segment according to the present invention, which is divided into right and left. FIGS. 2A and 2B are front views of the formwork of FIG. 1, wherein FIG. 2A shows an initial state at the time of demolding after casting concrete, and FIG. FIG. 3 is a front view showing a final state when the mold of FIG. 1 is released. FIG. 4 is a perspective view showing the entire configuration of the mold of FIG. 1; [Description of Signs] S: Concrete segment A: Bending curve B: Starting point 1 of free end 1 ... Forming mold 2 ... Bottom plate form 2a ... Bottom plate 2b ... Base 3 ...... Circumferential side plate form 4 ... End plate form 5. Support frame 10. Free end 11 of bottom plate... Tip (deformed portion) of bottom plate
Claims (1)
板型枠を額縁状に組み合わせてなるコンクリートセグメ
ントの製造用型枠であって、 底板型枠の底板の端板型枠が設置される部分が端板型枠
の長手方向に平行な折曲線により下方に折曲げられてい
ることを特徴とするコンクリートセグメントの製造用型
枠。Claims 1. A mold for manufacturing a concrete segment comprising a frame-like combination of a peripheral side plate form and an end plate form on a bottom plate of the bottom plate form, comprising: A mold for manufacturing a concrete segment, wherein a portion of a bottom plate on which an end plate form is installed is bent downward by a folding curve parallel to a longitudinal direction of the end plate form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001391383A JP3648198B2 (en) | 2001-12-25 | 2001-12-25 | Formwork for manufacturing concrete segments |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001391383A JP3648198B2 (en) | 2001-12-25 | 2001-12-25 | Formwork for manufacturing concrete segments |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003191217A true JP2003191217A (en) | 2003-07-08 |
| JP3648198B2 JP3648198B2 (en) | 2005-05-18 |
Family
ID=27598991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001391383A Expired - Lifetime JP3648198B2 (en) | 2001-12-25 | 2001-12-25 | Formwork for manufacturing concrete segments |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3648198B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101410954B1 (en) | 2013-03-06 | 2014-06-25 | 강남훈 | Mould Appatus of Precast Embedded Rail Track |
| KR101431241B1 (en) * | 2014-02-11 | 2014-08-18 | 경록건설주식회사 | Constructing method for curved surface concrete bottom structure and curved surface concrete bottom structure constructed by the same |
| US11472062B2 (en) | 2018-01-10 | 2022-10-18 | Louis HEBERT | Filler and demolding system for a non-linear molded product |
-
2001
- 2001-12-25 JP JP2001391383A patent/JP3648198B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101410954B1 (en) | 2013-03-06 | 2014-06-25 | 강남훈 | Mould Appatus of Precast Embedded Rail Track |
| KR101431241B1 (en) * | 2014-02-11 | 2014-08-18 | 경록건설주식회사 | Constructing method for curved surface concrete bottom structure and curved surface concrete bottom structure constructed by the same |
| US11472062B2 (en) | 2018-01-10 | 2022-10-18 | Louis HEBERT | Filler and demolding system for a non-linear molded product |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3648198B2 (en) | 2005-05-18 |
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