JPH0746676Y2 - Forming frame for T-type precast girder - Google Patents
Forming frame for T-type precast girderInfo
- Publication number
- JPH0746676Y2 JPH0746676Y2 JP1499790U JP1499790U JPH0746676Y2 JP H0746676 Y2 JPH0746676 Y2 JP H0746676Y2 JP 1499790 U JP1499790 U JP 1499790U JP 1499790 U JP1499790 U JP 1499790U JP H0746676 Y2 JPH0746676 Y2 JP H0746676Y2
- Authority
- JP
- Japan
- Prior art keywords
- mold
- web
- precast girder
- type precast
- 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 - Fee Related
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- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Description
【考案の詳細な説明】 〔産業上の利用分野〕 本考案は、例えば高架道路や高架鉄道の道床等に用いら
れるＴ型プレキャスト桁の成形用型枠に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a mold for molding a T-shaped precast girder used for, for example, a roadbed of an elevated road or an elevated railway.
〔従来の技術〕 上記の道床基材に用いられるプレキャスト桁として、下
フランジの上部中央に当該下フランジよりもやゝ巾広の
ウエブを連設すると共に、当該ウエブの上端に巾広の上
フランジを連設して、下端部が巾方向でやゝ膨らんだ形
状を呈する変形Ｔ型のプレキャスト桁が用いられてきた
が、最近では、前記下フランジを無くして、前記ウエブ
の上端に巾広の上フランジのみを連設したＴ型のプレキ
ャスト桁に切り換わりつつある。[Prior Art] As a precast girder used for the above-mentioned roadbed base material, a web slightly wider than the lower flange is continuously provided at the upper center of the lower flange, and a wide upper flange is provided at the upper end of the web. A modified T-shaped precast girder whose bottom end has a slightly swollen shape in the width direction has been used in recent years. Recently, however, the lower flange has been eliminated and a wide top end of the web has been removed. It is being switched to a T-type precast girder with only the upper flange connected.
このＴ型プレキャスト桁の特色は、変形Ｔ型のプレキャ
スト桁の場合と同様に、荷重計算を基にして、上フラン
ジの大きさ形状ならびにウエブの巾寸法を全く変えない
で、ウエブの高さのみを変更する設計が行われる点にあ
り、一般には例えば50mmピッチでウエブ高さの異なるプ
レキャスト桁が規格品とされるようになっている。This T-type precast girder is similar to the modified T-type precast girder in that only the height of the web is changed based on the load calculation without changing the size and shape of the upper flange and the width of the web. The pre-cast girders having different web heights at a pitch of 50 mm are generally used as standard products.
しかし、ウエブの高さのみが異なる複数種のＴ型プレキ
ャスト桁の成形するに際し、側型枠と妻型枠とによるウ
エブ成形用型枠部分の高さのみを異ならせた型枠を、規
格品とされるＴ型プレキャスト桁の夫々に対応させて多
数用意することは、膨大な設備費と広大な型枠保管スペ
ースを必要とする上、管理も面倒であって、延いてはＴ
型プレキャスト桁のコストアップに繋がる欠点がある。However, when molding multiple types of T-type precast girders that differ only in the height of the web, a standard form is used in which only the height of the web forming form part by the side form and the end form is changed. Preparing a large number for each of the T-type precast girders requires enormous equipment costs and vast formwork storage space, and is troublesome to manage.
There is a drawback that leads to an increase in the cost of the type precast girder.
ところで、上記した変形Ｔ型のプレキャスト桁を成形す
るための型枠は、上下のフランジ成形用型枠部分とウエ
ブ成形用型枠部分とから成るものであって、その内のウ
エブ成形用型枠部分については、これが高さ方向で２個
に分割可能に構成されており、その分割型枠間に、例え
ば50mmピッチで高さの異なる中間型枠を介在させること
によって、ウエブ高さの異なる複数種の変形Ｔ型プレキ
ャスト桁を成形できるようにしている。By the way, the mold for molding the above-mentioned deformed T-shaped precast girder is composed of upper and lower flange molding mold parts and a web molding mold part. As for the part, it is configured to be divided into two parts in the height direction, and a plurality of parts having different web heights can be formed by interposing an intermediate form part having a different height at a pitch of 50 mm between the parting parts. It allows for the molding of modified T-shaped precast girders of various types.
この構成によれば、設備費の軽減と型枠保管スペースの
縮小化とが達成され、かつ、管理面でもかなり有利とな
り、プレキャスト桁を比較的安価に成形することができ
る。According to this configuration, the facility cost and the formwork storage space can be reduced, the management is considerably advantageous, and the precast girder can be molded at a relatively low cost.
而して、この手段を採用することでＴ型プレキャスト桁
も比較的安価に成形できるのであるが、それでもウエブ
成形用型枠部分を分割可能に構成する点で型枠コストが
高く付き、かつ、中間型枠を継ぎ足したり取り外したり
する手間が甚大である上に、強度低下を伴う分割構成故
に補強構造をとる必要があって、型枠が重量物と化すこ
とから取り扱いが厄介になると言った点で問題がある。Thus, by adopting this means, the T-type precast girder can be molded at a relatively low cost, but the cost of the mold is high in that the mold part for web molding is divisible, and It takes a lot of time to add and remove the intermediate formwork, and it is necessary to have a reinforcing structure because of the divided structure with a decrease in strength, which makes the formwork a heavy load, which makes handling difficult. I have a problem with.
本考案は、かゝる実情に鑑みて発案されたものであっ
て、上記したウエブ成形用型枠部分を分割可能に構成す
る手段に較べて、取り扱いが容易で且つ簡単な手間で、
ウエブ高さの異なる複数種のＴ型プレキャスト桁を成形
することのできる型枠を、型枠コストのより一層の低廉
化を達成した上で提供することを目的としている。The present invention was devised in view of such circumstances, and is easier and easier to handle than the above-mentioned means for dividing the web forming mold part so that it can be divided,
It is an object of the present invention to provide a formwork capable of forming a plurality of types of T-type precast girders having different web heights while achieving further reduction in formwork cost.
上記の目的を達成するために本考案が講じた技術的手段
は、次の通りである。The technical means taken by the present invention to achieve the above object are as follows.
即ち、Ｔ型プレキャスト桁の巾方向両側に対応する側型
枠をベース上に設置し、Ｔ型プレキャスト桁のウエブ底
面部に対応する底型枠を前記側型枠間に配置すると共
に、Ｔ型プレキャスト桁の長手方向両端に対応する妻型
枠を前記側型枠の両側に設け、かつ、前記側型枠を底型
枠に対して上下に位置変更自在に構成した点に特徴があ
る。That is, side molds corresponding to both sides of the T-type precast girder in the width direction are installed on the base, and a bottom mold corresponding to the bottom surface of the web of the T-type precast girder is arranged between the side molds. It is characterized in that gable forms corresponding to both ends of the precast girder in the longitudinal direction are provided on both sides of the side form, and the side forms can be vertically moved relative to the bottom form.
上記の特徴構成によれば、側型枠を底型枠に対して上下
に位置変更させることで、ウエブ成形用型枠部分の高さ
方向での内法が変更される。According to the above-mentioned characteristic configuration, by changing the position of the side mold up and down with respect to the bottom mold, the inner method in the height direction of the web forming mold part is changed.
而して、側型枠ならびに底型枠をそのまま用いて、その
内の側型枠の高さ位置を変更設定することで、上フラン
ジの大きさ形状ならびにウエブの巾寸法を一定にした状
態で、ウエブの高さのみが異なるＴ型プレキャスト桁を
成形することができる。Then, by using the side form and the bottom form as they are, and changing and setting the height position of the side form within them, the size and shape of the upper flange and the width of the web are kept constant. , T-shaped precast girders that differ only in the height of the web can be formed.
以下、本考案の実施例を図面に基づいて説明すると、第
１図および第２図は本考案に係るＴ型プレキャスト桁成
形用型枠Ａの一実施例を示し、第３図に示すように、ウ
エブ１の上端に巾広の上フランジ２が連設され、かつ、
通し筋3aとスターラップ3b、及び、プレテンションによ
るプレストレス導入用のPCワイヤー（その他、PC鋼材な
ど）４が埋設された長尺（例えば20m程度）のＴ型プレ
キャスト桁Ｂを成形するものである。Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIGS. 1 and 2 show an embodiment of a T-type precast girder forming form A according to the present invention, and as shown in FIG. , A wide upper flange 2 is continuously provided on the upper end of the web 1, and
For forming a long T-shaped precast girder B in which the reinforcement 3a, stirrup 3b, and PC wire (other than PC steel material, etc.) 4 for introducing prestress by pretension are embedded. is there.
上記の型枠Ａは、前記Ｔ型プレキャスト桁Ｂの巾方向両
側に対応する一対の側型枠５を、上下方向の位置変更手
段６を介してベース（架台）７上に設置し、当該一対の
側型枠５の上端にわたって連結部材９を設け、前記Ｔ型
プレキャスト桁Ｂのウエブ１の底面部に対応する底型枠
10を側型枠５間に位置させてベース７上に配置すると共
に、前記Ｔ型プレキャスト桁Ｂの長手方向両端に対応す
る妻型枠８を、前記側型枠５の長手方向両端の内面に当
接させた状態で前記底型枠10上に設置して成る。In the above-mentioned form A, a pair of side form 5 corresponding to both sides in the width direction of the T-type precast girder B is installed on a base (frame) 7 via a vertical position changing means 6, and the pair The bottom formwork corresponding to the bottom surface part of the web 1 of the T-type precast girder B is provided with the connecting member 9 over the upper end of the side formwork 5.
10 is placed between the side molds 5 and arranged on the base 7, and the end molds 8 corresponding to the longitudinal ends of the T-shaped precast girder B are provided on the inner surfaces of the longitudinal ends of the side molds 5. It is installed on the bottom mold 10 in a state of abutting.
第４図にも示すように、前記側型枠５は、ウエブ側面に
対応する側板11と、上フランジ底面に対応する傾斜板1
2、及び、フランジ側面に対応する傾斜堰板13を、クラ
ンク状のフランジ14に取り付けると共に、帯状やアング
ル状の補強部材15を設け、かつ、前記フランジ14の上下
両端にはアングル部材16,17を付設して成る。As shown in FIG. 4, the side frame 5 includes a side plate 11 corresponding to the side surface of the web and an inclined plate 1 corresponding to the bottom surface of the upper flange.
2, and the inclined weir plate 13 corresponding to the side surface of the flange is attached to the crank-shaped flange 14, the belt-shaped or angle-shaped reinforcing member 15 is provided, and the angle members 16 and 17 are provided at the upper and lower ends of the flange 14. Is attached.
前記妻型枠８には、通し筋3aの挿通孔ａとプレストレス
導入用のPCワイヤー４の挿通孔ｂとが形成され、かつ、
前記ウエブ１の高さが異なる各種のＴ型プレキャスト桁
Ｂにおいて、前記PCワイヤー４をウエブ１の底部側に位
置させる必要があることから、当該妻型枠８は各種規格
品のＴ型プレキャスト桁Ｂ毎で専用のものが用意され
る。The gable form 8 is formed with an insertion hole a for the through muscle 3a and an insertion hole b for the PC wire 4 for introducing prestress, and
In various T-type precast girders B having different heights of the web 1, since the PC wire 4 needs to be positioned on the bottom side of the web 1, the gable form 8 is a T-type precast girder of various standard products. A dedicated one is prepared for each B.
前記底型枠10は、位置変更手段６による最上方への側型
枠５の位置変更下において、その上面を側型枠５の下端
よりも上方に位置させるように、スペーサー18の上端部
に設けられており、かつ、当該底型枠10の巾方向両側に
は、弾性変形によって前記側型枠５の内面に密接する弾
性シール材19が付設され、コンクリートの漏れ出しが防
止されるようになっている。The bottom mold 10 is provided on the upper end of the spacer 18 so that the upper surface of the bottom mold 10 is positioned above the lower end of the side mold 5 while the position of the side mold 5 is changed to the uppermost position by the position changing means 6. Elastic seal members 19 that are provided and are in close contact with the inner surface of the side mold 5 by elastic deformation are attached to both sides of the bottom mold 10 in the width direction so as to prevent concrete from leaking out. Has become.
尚、前記底型枠10の上面に設置される妻型枠８の下端部
にも弾性シール材19を設けてもよい。An elastic seal material 19 may be provided also on the lower end of the gable form 8 installed on the upper surface of the bottom form 10.
次に、前記位置変更手段６は、図示はしないが側型枠５
の長手方向に所定間隔を置いて複数組設置されており、
その１組について説明すると、このものは、第５図およ
び第６図にも示すように、前記底型枠10に対する側型枠
５の高さ位置を変更設定するために必要に応じて設けら
れる複数個のスペーサー20と、当該必要に応じて設けら
れるスペーサー20の上部（または第２図に示すように、
前記ベース７の上部）に取り付けられる側型枠受け金具
21、及び、当該側型枠受け金具21に枢着され且つ前記側
型枠５の下部アング部材17を固定するフック部材22から
成る。Next, although not shown, the position changing means 6 includes the side mold 5
Multiple sets are installed at a predetermined interval in the longitudinal direction of
Explaining one set, this set is provided as necessary for changing and setting the height position of the side mold 5 with respect to the bottom mold 10, as shown in FIGS. 5 and 6. A plurality of spacers 20 and an upper part of the spacers 20 (or, as shown in FIG. 2,
Side frame support fitting attached to the upper part of the base 7)
21 and a hook member 22 that is pivotally attached to the side form frame fitting 21 and fixes the lower ang member 17 of the side form frame 5.
前記スペーサー20は、第７図にも示すように、フック退
避用のスリット状の切欠ｃが形成された板状部材23の四
隅に、当該板状部材23よりも厚さが大なる間隔規定部材
24を連設すると共に、この間隔規定部材24にボルト挿通
孔ｄを形成して成るもので、規格品のウエブ高さの変化
代に対応させるように、前記間隔規定部材24の厚みを50
mmに設定してある。As shown in FIG. 7, the spacer 20 has a space defining member having a larger thickness than the plate-shaped member 23 at the four corners of the plate-shaped member 23 formed with slit-like notches c for retracting hooks.
24 is connected and the bolt insertion hole d is formed in the interval defining member 24. The thickness of the interval defining member 24 is set to 50 so as to correspond to the variation of the web height of the standard product.
It is set to mm.
そして、前記ボルト挿通孔ｄと同芯状の孔e,fを、前記
ベース７の一部を構成するチャンネル部材7aと側型枠受
け金具21とに形成して、長さが選択されたボルト25とナ
ット26とによって、必要に応じて設けられるスペーサー
20を介して、前記側型枠受け金具21をチャンネル部材7a
に連結固定できるようにしてある。Then, holes e and f concentric with the bolt insertion hole d are formed in the channel member 7a forming a part of the base 7 and the side frame receiving metal fitting 21 to select a bolt having a selected length. Spacer provided as required by 25 and nut 26
The side frame receiving metal fitting 21 through the channel member 7a
It can be connected and fixed to.
一方、前記フック部材22は、側型枠５の長手方向に沿う
支軸27を介して前記側型枠受け金具21に枢着され、か
つ、前記スペーサー20の切欠ｃを、このフック部材22に
臨ませて形成してある。On the other hand, the hook member 22 is pivotally attached to the side frame receiving metal fitting 21 via a support shaft 27 extending in the longitudinal direction of the side frame 5, and the notch c of the spacer 20 is attached to the hook member 22. It is formed to face.
そして、前記下部アング部材17の角部には、前記フック
部材22の先端が当接する斜板28が設けられ、前記側型枠
受け金具21とフック部材22の基部側との間に楔29を打設
することによって前記フック部材22の先端が斜板28を押
接し、前記下部アング部材17ひいては側型枠５の下部側
を前記ベース７側ならびに底型枠10側に向けて押圧固定
するように構成されている。Then, a swash plate 28 with which the tip of the hook member 22 abuts is provided at a corner portion of the lower ang member 17, and a wedge 29 is provided between the side frame receiving metal fitting 21 and the base side of the hook member 22. By driving, the tip of the hook member 22 presses the swash plate 28, and the lower ang member 17 and thus the lower side of the side form 5 are pressed and fixed toward the base 7 side and the bottom form 10 side. Is configured.
上記の構成によれば、例えば次のようにしてウエブ高さ
の大なるプレストレスが導入されたＴ型プレキャスト桁
Ｂが成形される。According to the above configuration, for example, the T-type precast girder B into which the prestress having a large web height is introduced is formed as follows.
即ち、第１図に示すように、所要数のスペーサー20をベ
ース７上の所定位置に積み重ねて、このスペーサー20上
に側型枠受け金具21を置き、ボルト25とナット26を介し
て前記側型枠受け金具21とスペーサー20をベース７に固
定すると共に、第５図に仮想線で示すように、前記フッ
ク部材22を切欠ｃに退避させた上で、クレーン等を利用
して前記側型枠受け金具21の上部に側型枠５を乗載し、
かつ、必要なウエブ高さに対応する妻型枠８を側型枠５
の内面に当接させた状態で底型枠10上に設置すると共
に、開き防止用の連結部材９を取り付ける。That is, as shown in FIG. 1, a required number of spacers 20 are stacked at a predetermined position on the base 7, a side frame receiving metal fitting 21 is placed on the spacer 20, and a bolt 25 and a nut 26 are used to insert the side frame receiving metal fitting 21 into the side. The frame holder 21 and the spacer 20 are fixed to the base 7, and the hook member 22 is retracted into the notch c as shown by the phantom line in FIG. Place the side formwork 5 on top of the frame receiving metal fitting 21,
Moreover, the gable formwork 8 corresponding to the required web height is attached to the side formwork 5.
It is installed on the bottom mold 10 in a state of being brought into contact with the inner surface of, and a connecting member 9 for preventing opening is attached.
そして、通し筋3aとスターラップ3b、及び、PCワイヤー
４を配筋すると共に、図外のテンション機構の高さ設定
したテンション部に前記PCワイヤー４を連結して当該PC
ワイヤー４にプレテンションを付与し、かつ、前記フッ
ク部材22の先端を斜板28の押圧させるように楔29を打設
して、前記側型枠５の下部側内面を底型枠10の弾性シー
ル材19に押圧させつつ、側型枠５の下部側を側型枠受け
金具21ひいてはスペーサー20を介してベース７に押圧固
定させる。Then, the reinforcement wire 3a, the stirrup 3b, and the PC wire 4 are arranged, and the PC wire 4 is connected to the tension portion of the tension mechanism (not shown) where the height is set.
A pretension is applied to the wire 4, and a wedge 29 is driven so as to press the tip of the hook member 22 against the swash plate 28 so that the inner surface of the lower side of the side mold 5 is elastic of the bottom mold 10. While pressing the sealing material 19, the lower side of the side frame 5 is pressed and fixed to the base 7 via the side frame receiving metal fitting 21 and the spacer 20.
この状態で型枠内にコンクリートを打設し、所定の強度
がコンクリートに発現した時点で、前記フック部材22に
よる側型枠５下部の押圧固定を解除し、かつ、当該フッ
ク部材22を切欠ｃに退避させて、側型枠５ならびに妻型
枠８を脱型し、前記PCワイヤー４に対するプレテンショ
ンの付与を解除させることで、ウエブ高さの大なるプレ
ストレスが導入されたＴ型プレキャスト桁Ｂが成形され
る。Concrete is poured into the formwork in this state, and when the predetermined strength is developed in the concrete, the pressing and fixing of the lower part of the side formwork 5 by the hook member 22 is released, and the hook member 22 is cut out c The T-type precast girder in which the prestress with a large web height is introduced by retracting the side formwork 5 and the end formwork 8 to release the pretension applied to the PC wire 4. B is molded.
あるいは、前記スペーサー20の介装数を減じるが、又は
第２図に示すように、前記スペーサー20を全く無くすこ
とによって、側型枠５ならびに底型枠10をそのまま利用
して、ウエブ高さが順次低くなるＴ型プレキャスト桁Ｂ
が成形される。Alternatively, while reducing the number of spacers 20 to be inserted, or as shown in FIG. 2, by eliminating the spacers 20 at all, the side mold 5 and the bottom mold 10 can be used as they are, and the web height can be increased. T-type precast girder B that gradually decreases
Is molded.
即ち、必要に応じて所定数のスペーサー20を前記ベース
７と側型枠受け金具21との間に設けることで、側型枠５
と妻型枠８とによるウエブ成形用型枠部分の高さ方向で
の内法が変更されるのであり、而して、妻型枠８は別と
して側型枠５ならびに底型枠10をそのまま用いて、その
内の側型枠５の高さ位置を変更設定することで、上フラ
ンジ２の大きさ形状ならびにウエブ１の巾寸法を一定に
した状態で、ウエブ１の高さのみが異なるＴ型プレキャ
スト桁Ｂを成形することができるのである。That is, by providing a predetermined number of spacers 20 between the base 7 and the side frame receiving metal fittings 21 as needed, the side frame 5
Since the inner method in the height direction of the web forming mold part by the and the end molds 8 is changed, the side molds 5 and the bottom molds 10 are left as they are, apart from the end molds 8. By changing and setting the height position of the side formwork 5 therein, only the height of the web 1 is different while the size and shape of the upper flange 2 and the width of the web 1 are kept constant. The mold precast girder B can be molded.
尚、前記スペーサー20の形状は種々の変形が可能であっ
て、例えば第８図に示すように、フック退避用のスリッ
ト状の切欠ｃが形成された板状部材23の四隅に、当該板
状部材23よりも厚さが大で且つ中心部にボルト挿通孔ｄ
を有する筒状の間隔規定部材24を連設したり、あるいは
第９図に示すように、フック退避用のスリット状の切欠
ｃが形成された板状部材23の両側に、当該板状部材23よ
りも厚さが大なる間隔規定部材24を連設すると共に、こ
の間隔規定部材24の長手方向両側にボルト挿通孔ｄを形
成する等の変形が可能である。The shape of the spacer 20 can be variously modified. For example, as shown in FIG. 8, the plate-like member 23 is provided at four corners of the plate-like member 23 in which slit-like notches c for retracting the hook are formed. It is thicker than the member 23 and has a bolt insertion hole d at the center.
9 are provided in series, or, as shown in FIG. 9, the plate-like member 23 is provided on both sides of the plate-like member 23 in which a slit-like notch c for retracting the hook is formed. The distance defining member 24 having a larger thickness than that of the distance defining member 24 may be continuously provided, and the bolt defining holes 24 may be formed on both sides of the distance defining member 24 in the longitudinal direction.
次に、位置変更手段６の第１別実施例を第10図乃至第12
図に基づいて説明する。Next, a first alternative embodiment of the position changing means 6 is shown in FIGS.
It will be described with reference to the drawings.
この位置変更手段６は、底型枠10を支持するスペーサー
18の横側部にブラケット31を設けると共に、このブラッ
ト31に、側型枠５の長手方向に沿う支軸32まわりで回動
自在にボルト部材23を枢着し、かつ、前記側型枠５の下
部アング部材17に前記ボルト部材32を挿通させるための
ボルト挿通孔ｇを形成すると共に、前記ボルト部材32に
対してそれの横側方に係脱自在な分銅構造のスペーサー
20を、必要に応じて前記ボルト部材32の受け金具34と前
記下部アング部材17との間に設けるようにしたもので、
ウエブ高さの異なるＴ型プレキャスト桁Ｂの成形が可能
であることは勿論、第10図に仮想線で示すように、前記
側型枠５を支軸32まわりで回動させることで当該側型枠
５を脱型できる点に特徴がある。This position changing means 6 is a spacer for supporting the bottom mold 10.
A bracket 31 is provided on a lateral side portion of 18, and a bolt member 23 is pivotally attached to the brat 31 so as to be rotatable around a support shaft 32 along the longitudinal direction of the side form frame 5, and A spacer having a weight structure, in which a bolt insertion hole g for inserting the bolt member 32 is formed in the lower ang member 17 and the bolt member 32 can be engaged and disengaged laterally with respect to the bolt member 32.
20 is provided between the metal fitting 34 of the bolt member 32 and the lower angular member 17 as required,
Of course, it is possible to form T-shaped precast girders B having different web heights, and as shown by phantom lines in FIG. The feature is that the frame 5 can be removed from the mold.
第13図に位置変更手段６の第２別実施例を示す。この位
置変更手段６は流体圧シリンダ41を主体にして構成され
ており、具体的には、流体圧シリンダ41の伸縮方向を上
下方向に向けてシリンダチューブ42をベース７に取り付
けると共に、シリンダロッド43の上端に、ウエブ巾方向
へのガイド部を有するガイド部材44を設け、このガイド
部材44に案内されるスライドベース45を、前記側型枠５
の下部アング部材17に連設して成るもので、前記底型枠
10に対する側型枠５の上下の高さ位置を無段変更させ得
る点に特徴がある。FIG. 13 shows a second alternative embodiment of the position changing means 6. The position changing means 6 is mainly composed of the fluid pressure cylinder 41. Specifically, the cylinder tube 42 is attached to the base 7 with the expansion / contraction direction of the fluid pressure cylinder 41 in the vertical direction, and the cylinder rod 43. A guide member 44 having a guide portion in the web width direction is provided at the upper end of the slide base 45 guided by the guide member 44.
Which is connected to the lower ang member 17 of
The feature is that the vertical position of the side formwork 5 with respect to 10 can be changed steplessly.
尚、図中の46は側型枠５の開き止め手段で、第14図およ
び第15図にも示すように、前記ベース７に支柱47を立設
すると共に、側型枠５の長手方向に沿う軸48を介して前
記支柱47にネジ式のターンバックル機構49の一端側を枢
着し、かつ、当該ターンバックル機構49の他端側には、
前記側型枠５のフランジ14に係合するコの字状の部材50
を設けて、側型枠５の上下位置変更に対応できるように
構成して成る。Reference numeral 46 in the drawing denotes a means for preventing the side form frame 5 from opening. As shown in FIGS. 14 and 15, a column 47 is erected on the base 7 and the side form frame 5 extends in the longitudinal direction. One end side of a screw-type turnbuckle mechanism 49 is pivotally attached to the support column 47 via a shaft 48, and the other end side of the turnbuckle mechanism 49,
U-shaped member 50 that engages with the flange 14 of the side mold 5
Is provided so that the vertical position of the side mold 5 can be changed.
而して、前記側型枠５を脱型させるに際しては、前記タ
ーンバックル機構49による側型枠５の突っ張りを解除し
て、当該ターンバックル機構49を支柱47の反対側に回動
させ、かつ、クレーンやフォークリフト等の設備を利用
して、前記側型枠５をガイド部材44に沿わせてスライド
させることによって達成される。Thus, when the side formwork 5 is released from the mold, the tension of the side formwork 5 by the turnbuckle mechanism 49 is released, and the turnbuckle mechanism 49 is rotated to the opposite side of the column 47, and This is accomplished by sliding the side formwork 5 along the guide member 44 using equipment such as a crane or a forklift.
第16図および第17図は脱型機能を備える側型枠５の開き
止め手段51を示し、前記側型枠５のフランジ14を平面視
Ｔ字状と成して、それの外端に係止片部ｊを有せしめる
一方、ベース７に立設の支柱52に、側型枠５の長手方向
に沿う軸53を介して流体圧シリンダ54を枢着し、かつ、
前記フランジ14の係止片部ｊに係止するピン部材ｎを備
えたコの字状の係止連結部材55を、前記流体圧シリンダ
54のロッド56に設けて、側型枠５の上下位置変更に対応
できるように構成して成り、前記流体圧シリンダ54を伸
長させることで側型枠５の開き止めが達成され、流体圧
シリンダ54を収縮させることで側型枠５の脱型が達成さ
れる。FIG. 16 and FIG. 17 show opening preventing means 51 of the side mold 5 having a demolding function, wherein the flange 14 of the side mold 5 is T-shaped in plan view and engaged with the outer end thereof. While having a stop piece j, a fluid pressure cylinder 54 is pivotally attached to a column 52 standing on the base 7 via a shaft 53 extending in the longitudinal direction of the side frame 5, and
A U-shaped locking connecting member 55 having a pin member n that locks to the locking piece j of the flange 14 is provided in the fluid pressure cylinder.
It is provided on the rod 56 of 54 so as to be capable of changing the vertical position of the side mold 5, and by extending the fluid pressure cylinder 54, the opening stop of the side mold 5 is achieved, and the fluid pressure cylinder The side mold 5 is demolded by contracting 54.
以上説明したように本考案によるＴ型プレキャスト桁の
成形用型枠によれば、上フランジの大きさ形状ならびに
ウエブの巾寸法が一定で、ウエブの高さのみが異なるＴ
型プレキャスト桁を、側型枠ならびに底型枠をそのまま
用いて且つ単に側型枠の底型枠に対する上下位置を変更
設定させるだけで成形することができるものであって、
例えばウエブ成形用型枠部分が分割可能と成し、この分
割型枠間に中間型枠を介在させる手段に較べて補強構造
を要しないことで軽量化が達成され、而して、取り扱い
が容易で且つ簡単な手間でウエブ高さの異なるＴ型プレ
キャスト桁の成形することができる。As described above, according to the T-type precast girder forming mold of the present invention, the size and shape of the upper flange and the width of the web are constant, and only the height of the web is different.
A mold precast girder can be molded by using the side mold and the bottom mold as they are and simply changing and setting the vertical position of the side mold with respect to the bottom mold.
For example, the web forming mold part can be divided, and the weight reduction is achieved by not requiring a reinforcing structure as compared with the means of interposing the intermediate mold between the divided molds, and thus the handling is easy. In addition, it is possible to form T-type precast girders having different web heights with a simple labor.
しかも、型枠全体が構成的にシンプルであると共に補強
構造を要しないことが相乗して、型枠コストひいてはＴ
型プレキャスト桁の大巾なコストダウンを可能と成し得
るに至ったのである。Moreover, the cost of the formwork and the T
The cost of die precast girder can be greatly reduced.
第１図乃至第７図は本考案の一実施例を示し、第１図は
ウエブ高さの大なるＴ型プレキャスト桁の成形態様を示
す型枠の縦断面図、第２図はウエブ高さの低いＴ型プレ
キャスト桁の成形態様を示す型枠の縦断面図、第３図は
Ｔ型プレキャスト桁の断面図、第４図は主要型枠の分解
図、第５図は位置変更手段の側面図、第６図は位置変更
手段の正面図、第７図はスペーサーの斜視図、第８図お
よび第９図は夫々別実施例のスペーサーの斜視図であ
る。 第10図は第１別実施例の位置変更手段を装備させたＴ型
プレキャスト桁成形用型枠の縦断面図であり、第11図お
よび第12図は、その第１別実施例の位置変更手段の側面
図と正面図である。 第13図は側型枠の開き止め手段と第２別実施例の位置変
更手段を装備させたＴ型プレキャスト桁成形用型枠の縦
断面図であり、第14図はその側型枠の開き止め手段の側
面図であり、第15図は開き止め手段の要部の斜視図であ
る。 第16図は第２別実施例の側型枠の開き止め手段の側面図
であり、第17図はその開き止め手段の要部の斜視図であ
る。 １……ウエブ、２……上フランジ、５……側型枠、７…
…ベース、８……妻型枠、10……底型枠、Ｂ……Ｔ型プ
レキャスト桁。1 to 7 show an embodiment of the present invention, FIG. 1 is a vertical cross-sectional view of a mold showing a molding mode of a T-shaped precast girder having a large web height, and FIG. 2 is a web height. Fig. 3 is a vertical cross-sectional view of a form showing a molding mode of a T-type precast girder having a low temperature. FIG. 6 is a front view of the position changing means, FIG. 7 is a perspective view of a spacer, and FIGS. 8 and 9 are perspective views of a spacer of another embodiment. FIG. 10 is a vertical cross-sectional view of a T-type precast girder forming frame equipped with the position changing means of the first alternative embodiment, and FIGS. 11 and 12 are the position changing of the first alternative embodiment. It is a side view and a front view of a means. FIG. 13 is a vertical cross-sectional view of a T-type precast girder forming formwork equipped with a side form opening preventing means and a position changing means of the second alternative embodiment, and FIG. 14 is a side view of the side form opening. FIG. 15 is a side view of the stopping means, and FIG. 15 is a perspective view of a main part of the opening stopping means. FIG. 16 is a side view of the opening preventing means of the side form of the second alternative embodiment, and FIG. 17 is a perspective view of a main part of the opening preventing means. 1 ... Web, 2 ... Top flange, 5 ... Side form, 7 ...
… Base, 8… Wife form, 10… Bottom form, B… T type precast girder.
Claims (1)
たＴ型プレキャスト桁の成形用型枠であって、Ｔ型プレ
キャスト桁の巾方向両側に対応する側型枠をベース上に
設置し、Ｔ型プレキャスト桁のウエブ底面部に対応する
底型枠を前記側型枠間に配置すると共に、Ｔ型プレキャ
スト桁の長手方向両端に対応する妻型枠を前記側型枠の
両側に設け、かつ、前記側型枠を底型枠に対して上下に
位置変更自在に構成してあることを特徴とするＴ型プレ
キャスト桁の成形用型枠。1. A forming mold for a T-type precast girder in which a wide upper flange is continuously provided on the upper end of a web, and side molds corresponding to both sides in the width direction of the T-type precast girder are installed on a base. Then, a bottom formwork corresponding to the bottom surface of the web of the T-type precast girder is disposed between the side formworks, and a gable formwork corresponding to both longitudinal ends of the T-type precast girder is provided on both sides of the side formwork. A mold for molding a T-type precast girder, wherein the side mold is configured to be vertically movable with respect to the bottom mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1499790U JPH0746676Y2 (en) | 1990-02-17 | 1990-02-17 | Forming frame for T-type precast girder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1499790U JPH0746676Y2 (en) | 1990-02-17 | 1990-02-17 | Forming frame for T-type precast girder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03105662U JPH03105662U (en) | 1991-11-01 |
| JPH0746676Y2 true JPH0746676Y2 (en) | 1995-10-25 |
Family
ID=31518331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1499790U Expired - Fee Related JPH0746676Y2 (en) | 1990-02-17 | 1990-02-17 | Forming frame for T-type precast girder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0746676Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112077985B (en) * | 2020-09-03 | 2024-04-26 | 中交一公局集团有限公司 | Reinforcing sealing device for precast beam base |
-
1990
- 1990-02-17 JP JP1499790U patent/JPH0746676Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03105662U (en) | 1991-11-01 |
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