JP2022046053A - Formwork device and method for producing hollow concrete member - Google Patents

Formwork device and method for producing hollow concrete member Download PDF

Info

Publication number
JP2022046053A
JP2022046053A JP2020151898A JP2020151898A JP2022046053A JP 2022046053 A JP2022046053 A JP 2022046053A JP 2020151898 A JP2020151898 A JP 2020151898A JP 2020151898 A JP2020151898 A JP 2020151898A JP 2022046053 A JP2022046053 A JP 2022046053A
Authority
JP
Japan
Prior art keywords
formwork
hollow
concrete member
mold
hollow 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
Application number
JP2020151898A
Other languages
Japanese (ja)
Other versions
JP7437860B2 (en
Inventor
圭 小林
Kei Kobayashi
佳隆 下田
Yoshitaka Shimoda
拓也 岩田
Takuya Iwata
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Taisei Corp
Original Assignee
Taisei Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Taisei Corp filed Critical Taisei Corp
Priority to JP2020151898A priority Critical patent/JP7437860B2/en
Publication of JP2022046053A publication Critical patent/JP2022046053A/en
Application granted granted Critical
Publication of JP7437860B2 publication Critical patent/JP7437860B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Moulds, Cores, Or Mandrels (AREA)

Abstract

To provide a formwork device capable of relatively easily producing a hollow concrete member having a hollow part.SOLUTION: A formwork device 1 produces a hollow concrete member 2 having a hollow part 3. The formwork device 1 comprises: an outer formwork 10 molding the outer face of the hollow concrete member 2; and a hollow forming formwork 11 with a square pyramid shape temporarily fixed to the outer formwork 10 and molding the hollow part 3 of the hollow concrete member 2. According to this invention, by installing concrete to the inside of the outer formwork 10, the hollow part 3 is molded at the hollow concrete member 2 by the hollow forming formwork 11. At this time, since the hollow forming formwork 11 has a square pyramid shape of becoming thinner as it goes to the tip, the removal of the hollow forming formwork 11 is facilitated.SELECTED DRAWING: Figure 1

Description

本発明は、中空部を有する中空コンクリート部材を製造する型枠装置、および、この型枠装置を用いた中空コンクリート部材の製造方法に関する。 The present invention relates to a formwork device for manufacturing a hollow concrete member having a hollow portion, and a method for manufacturing a hollow concrete member using the formwork device.

従来より、中空部を有する中空コンクリート部材を成形する方法が提案されている。
特許文献１には、中空部を備えたコンクリート柱体を成形する中空ＰＣ用型枠装置が示されている。この中空ＰＣ用型枠装置は、コンクリート柱体の外面を成形する外型枠と、中空部を成形する内型枠と、を備えており、内型枠は、エアチューブからなるコア部と、このコア部の表面に螺旋状に配置された可撓性ホースと、を備える。
特許文献２には、鉄筋組立体の周囲にコンクリート壁を成形する中空プレキャストコンクリート柱の成形装置が示されている。この成形装置は、コの字形の周辺型枠と、隣り合う柱主筋間にこれを塞ぐように配置される複数の板状の内型枠と、中格子筋により区画された各空間内に挿入して膨張させる内圧用袋状体と、からなる。各袋状体を膨張させることにより、各内型枠を固定する。 Conventionally, a method of forming a hollow concrete member having a hollow portion has been proposed.
Patent Document 1 discloses a formwork device for a hollow PC that forms a concrete pillar body having a hollow portion. This formwork device for a hollow PC includes an outer formwork for forming an outer surface of a concrete pillar and an inner formwork for forming a hollow portion, and the inner formwork includes a core portion made of an air tube and an inner formwork. A flexible hose spirally arranged on the surface of the core portion is provided.
Patent Document 2 discloses a hollow precast concrete column forming device for forming a concrete wall around a reinforcing bar assembly. This molding device is inserted into a U-shaped peripheral formwork, a plurality of plate-shaped inner formwork arranged so as to block the adjacent column main bars, and each space partitioned by the middle grid bars. It consists of a bag-shaped body for internal pressure that is inflated. Each inner formwork is fixed by inflating each bag-shaped body.

特開２０１７－１９３１６８号公報Japanese Unexamined Patent Publication No. 2017-193168 特開平８－７２０４２号公報Japanese Unexamined Patent Publication No. 8-72042

本発明は、中空部を有する中空コンクリート部材を容易に製造可能な型枠装置、およびこの型枠装置を用いた中空コンクリート部材の製造方法を提供することを目的とする。 An object of the present invention is to provide a formwork device capable of easily manufacturing a hollow concrete member having a hollow portion, and a method for manufacturing a hollow concrete member using the formwork device.

第１の発明の型枠装置（例えば、後述の型枠装置１）は、中空部（例えば、後述の中空部３）を有する中空コンクリート部材（例えば、後述の中空コンクリート部材２）を製造する型枠装置であって、前記中空コンクリート部材の外面を成形する外型枠（例えば、後述の外型枠１０）と、前記外型枠に仮固定されて前記中空コンクリート部材の中空部を成形する中抜き型枠（例えば、後述の中抜き型枠１１、１１Ａ）と、を備え、前記中抜き型枠は、先端に向かうに従って細くなる形状であることを特徴とする。 The formwork device of the first invention (for example, the formwork device 1 described later) is a mold for manufacturing a hollow concrete member (for example, the hollow concrete member 2 described later) having a hollow portion (for example, the hollow portion 3 described later). In the frame device, an outer formwork (for example, an outer formwork 10 described later) for forming the outer surface of the hollow concrete member and a hollow portion of the hollow concrete member temporarily fixed to the outer formwork are formed. A punching die frame (for example, hollow die frames 11 and 11A described later) is provided, and the hollow die frame is characterized in that it has a shape that becomes thinner toward the tip.

この発明によれば、外型枠に中抜き型枠を仮固定したので、外型枠の内側にコンクリートを打設することで、中抜き型枠により中空コンクリート部材に中空部が成形される。
このとき、中抜き型枠を、先端に向かうに従って細くなる形状としたので、中抜き型枠の脱型が容易である。 According to the present invention, since the hollow formwork is temporarily fixed to the outer formwork, by placing concrete inside the outer formwork, a hollow portion is formed in the hollow concrete member by the hollow formwork.
At this time, since the hollow mold has a shape that becomes thinner toward the tip, it is easy to remove the hollow mold.

第２の発明の型枠装置は、前記外型枠は、板状の底型枠（例えば、後述の底型枠２０）と、前記底型枠上に配置された一対の側型枠（例えば、後述の側型枠３０Ａ、３０Ｂ）と、前記底型枠上に配置されて前記一対の側型枠の間を塞ぐ一対の小口型枠（例えば、後述の小口型枠４０Ａ、４０Ｂ）と、を備え、前記一対の小口型枠の一方は、前記中抜き型枠の基端側が仮固定されるとともに、前記底型枠上を走行する移動装置（例えば、後述の移動装置５０）が着脱可能であり、前記中抜き型枠には、前記中抜き型枠の先端から突没可能な押しボルト（例えば、後述の押しボルト１２）が螺合されていることを特徴とする。 In the formwork device of the second invention, the outer formwork includes a plate-shaped bottom formwork (for example, the bottom formwork 20 described later) and a pair of side formwork arranged on the bottom formwork (for example, the bottom formwork 20). , Later side molds 30A, 30B), and a pair of edge molds (for example, edge molds 40A, 40B described later) arranged on the bottom formwork and closing between the pair of side formwork. The base end side of the hollow formwork is temporarily fixed to one of the pair of small formwork, and a moving device (for example, a moving device 50 described later) traveling on the bottom formwork can be attached and detached. The hollow mold is characterized in that a push bolt (for example, a push bolt 12 described later) that can be recessed from the tip of the hollow mold is screwed into the hollow mold.

この発明によれば、コンクリートが硬化した後に押しボルトを正転させることで、中抜き型枠の先端から押しボルトが突出して、この押しボルトが中空部の底面を押すので、中空コンクリート部材から中抜き型枠を容易に脱型できる。よって、中空コンクリート部材を比較的容易に製造できる。 According to the present invention, by rotating the push bolt in the normal direction after the concrete is hardened, the push bolt protrudes from the tip of the hollow formwork, and the push bolt pushes the bottom surface of the hollow portion. The die-cutting form can be easily removed. Therefore, the hollow concrete member can be manufactured relatively easily.

第３の発明の中空コンクリート部材の製造方法は、中空部を有する中空コンクリート部材を製造する方法であって、上述の型枠装置を設置するとともに、前記型枠装置の前記外型枠内に配筋する工程（例えば、後述のステップＳ１～Ｓ３）と、前記型枠装置の前記外型枠内にコンクリートを打設する工程（例えば、後述のステップＳ４）と、コンクリートが硬化した後、前記型枠装置の前記外型枠および前記中抜き型枠を脱型する工程（例えば、後述のステップＳ５）と、を備えることを特徴とする。 The method for manufacturing a hollow concrete member according to the third invention is a method for manufacturing a hollow concrete member having a hollow portion, in which the above-mentioned formwork device is installed and arranged in the outer formwork of the formwork device. A step of scoring (for example, steps S1 to S3 described later), a step of placing concrete in the outer form of the formwork device (for example, step S4 described later), and after the concrete is hardened, the mold. It is characterized by comprising a step of removing the outer mold and the hollow mold of the frame device (for example, step S5 described later).

この発明によれば、上述の型枠装置を用いて、中空部を有する中空コンクリート部材を容易に製造できる。 According to the present invention, a hollow concrete member having a hollow portion can be easily manufactured by using the above-mentioned formwork device.

本発明によれば、中空部を有する中空コンクリート部材を容易に製造可能な型枠装置、およびこの型枠装置を用いた中空コンクリート部材の製造方法を提供できる。 INDUSTRIAL APPLICABILITY According to the present invention, it is possible to provide a formwork device capable of easily manufacturing a hollow concrete member having a hollow portion, and a method for manufacturing a hollow concrete member using the formwork device.

本発明の第１実施形態に係る型枠装置の斜視図である。It is a perspective view of the formwork apparatus which concerns on 1st Embodiment of this invention. 型枠装置の平面図である。It is a top view of the formwork device. 型枠装置で製造する中空コンクリート部材の斜視図である。It is a perspective view of the hollow concrete member manufactured by a formwork device. 中抜き型枠を仮固定した状態の小口型枠の水平断面図である。It is a horizontal sectional view of the edge formwork in the state which the hollow formwork is temporarily fixed. 型枠装置の側型枠を省略した状態の斜視図である。It is a perspective view of the state which omitted the side formwork of a formwork device. 型枠装置を用いて中空コンクリート部材を製造する方法のフローチャートである。It is a flowchart of the method of manufacturing a hollow concrete member using a formwork device. 中空コンクリート部材の製造方法の説明図（その１：小口型枠をセットした状態を示す斜視図）である。It is explanatory drawing of the manufacturing method of the hollow concrete member (the 1: perspective view which shows the state which set the edge formwork). 中空コンクリート部材の製造方法の説明図（その２：側型枠をセットした状態を示す斜視図）である。It is explanatory drawing (the 2: perspective view which shows the state which set the side formwork) of the manufacturing method of a hollow concrete member. 中空コンクリート部材の製造方法の説明図（その３：側型枠を脱型した状態を示す斜視図）である。It is explanatory drawing (the 3: perspective view which shows the state which the side formwork was demolded) of the manufacturing method of a hollow concrete member. 中空コンクリート部材の製造方法の説明図（その４：小口型枠に移動装置を取り付けた状態を示す斜視図）である。It is explanatory drawing of the manufacturing method of the hollow concrete member (the 4: perspective view which shows the state which attached the moving device to the edge formwork). 中空コンクリート部材の製造方法の説明図（その５：小口型枠および中抜き型枠を脱型した状態を示す水平断面図）である。It is explanatory drawing of the manufacturing method of the hollow concrete member (the 5: horizontal cross-sectional view which shows the state which the small-sized formwork and the hollow formwork are demolded). 中空コンクリート部材の製造方法の説明図（その６：小口型枠および中抜き型枠を脱型した状態を示す斜視図）である。It is explanatory drawing of the manufacturing method of the hollow concrete member (the 6: perspective view which shows the state which the small-sized formwork and the hollow formwork are demolded). 本発明の第２実施形態に係る型枠装置の小口型枠の斜視図である。It is a perspective view of the edge form of the formwork device which concerns on 2nd Embodiment of this invention.

本発明は、中空部を有する中空コンクリート部材を製造するための型枠装置、およびこの型枠装置を用いた中空コンクリート部材の製造方法に関する。中空コンクリート部材は、上面に中空部が設けられた直方体形状の柱部材である。本発明の型枠装置によれば、従来の底型枠、側型枠、小口型枠（端板）からなる基本的な構成を変えることなく、一方の小口型枠に中抜き型枠を追加するだけで、中空部を容易に形成できる。
以下、本発明の実施形態を図面に基づいて説明する。なお、以下の実施形態の説明にあたって、同一構成要件については同一符号を付し、その説明を省略もしくは簡略化する。
〔第１実施形態〕
図１は、本発明の第１実施形態に係る型枠装置１の斜視図である。図２は、型枠装置１の平面図である。
型枠装置１は、建物の柱となる柱部材となる中空コンクリート部材２を寝かせた状態で製造する装置である（図１２参照）。中空コンクリート部材２は、図３に示すように、直方体形状であり、柱頭部から柱脚部に向かって中空部３が形成されている。また、この中空コンクリート部材２の上端面には、柱主筋４が突出して設けられている。
型枠装置１は、中空コンクリート部材２の外面を成形する鋼製の外型枠１０と、外型枠１０に仮固定されて中空コンクリート部材２の中空部３を成形する鋼製の中抜き型枠１１と、を備える。 The present invention relates to a formwork device for manufacturing a hollow concrete member having a hollow portion, and a method for manufacturing a hollow concrete member using the formwork device. The hollow concrete member is a rectangular parallelepiped column member having a hollow portion on the upper surface. According to the formwork device of the present invention, a hollow mold is added to one of the small formwork without changing the basic configuration consisting of the conventional bottom formwork, side formwork, and small formwork (end plate). The hollow portion can be easily formed just by doing so.
Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the description of the following embodiments, the same components will be designated by the same reference numerals, and the description thereof will be omitted or simplified.
[First Embodiment]
FIG. 1 is a perspective view of the formwork device 1 according to the first embodiment of the present invention. FIG. 2 is a plan view of the formwork device 1.
The formwork device 1 is a device for manufacturing a hollow concrete member 2 which is a pillar member which is a pillar of a building in a laid state (see FIG. 12). As shown in FIG. 3, the hollow concrete member 2 has a rectangular parallelepiped shape, and the hollow portion 3 is formed from the stigma toward the pedestal. Further, a column main bar 4 is provided so as to project from the upper end surface of the hollow concrete member 2.
The formwork device 1 is a steel outer formwork 10 that forms the outer surface of the hollow concrete member 2, and a steel hollow die that is temporarily fixed to the outer formwork 10 and forms the hollow portion 3 of the hollow concrete member 2. A frame 11 and the like are provided.

外型枠１０は、板状の底型枠２０と、底型枠２０上に配置された一対の側型枠３０Ａ、３０Ｂと、底型枠２０上に配置されて一対の側型枠３０Ａ、３０Ｂの間を塞ぐ一対の小口型枠４０Ａ、４０Ｂと、を備える。
底型枠２０には、側型枠３０Ａ、３０Ｂが上面を走行する走行部２１が設けられている。また、底型枠２０上において、中空コンクリート部材２を製造するための側型枠３０Ａ、３０Ｂおよび小口型枠４０Ａ、４０Ｂの位置を所定位置Ｐとする。 The outer formwork 10 includes a plate-shaped bottom formwork 20, a pair of side formwork 30A and 30B arranged on the bottom formwork 20, and a pair of side formwork 30A arranged on the bottom formwork 20. It is provided with a pair of small formwork 40A, 40B that closes between 30B.
The bottom formwork 20 is provided with a traveling portion 21 on which the side formwork 30A and 30B travel on the upper surface. Further, on the bottom formwork 20, the positions of the side formwork 30A, 30B and the edge formwork 40A, 40B for manufacturing the hollow concrete member 2 are set as predetermined positions P.

側型枠３０Ａ、３０Ｂには、移動装置３１が設けられており、移動装置３１が底型枠２０の走行部２１上を走行することで、側型枠３０Ａ、３０Ｂが図１および図２中矢印方向に移動し、中空コンクリート部材２を製造するための所定位置Ｐに配置または退避可能となっている。 The side molds 30A and 30B are provided with a moving device 31, and the moving device 31 travels on the traveling portion 21 of the bottom form 20 so that the side molds 30A and 30B are shown in FIGS. 1 and 2. It moves in the direction of the arrow and can be placed or retracted at a predetermined position P for manufacturing the hollow concrete member 2.

一方の小口型枠４０Ａには、中抜き型枠１１が固定されている。図４に示すように、中抜き型枠１１は、先端に向かうに従って細くなる四角錐台形状である。小口型枠４０Ａの中央部には、開口４１が形成されている。この小口型枠４０Ａの開口４１には、中抜き型枠１１が挿通されて、中抜き型枠１１の基端側がボルト４２により小口型枠４０Ａに仮固定されている。したがって、一般的な鋼製型枠の中央部に開口４１を設けるだけで、この開口４１に中抜き型枠１１を挿通して仮固定することが可能となっている。また、中抜き型枠１１の小口型枠４０Ａからの突出寸法Ｌを調整することで、中空部３の深さを変更可能である。
中抜き型枠１１には、この中抜き型枠１１の先端面の押出し穴１５から突没可能な押しボルト１２が螺合されている。押しボルト１２の基端側には、インパクトレンチが嵌合するための高ナット１３が溶接固定されている。
また、小口型枠４０Ａの四隅には、柱主筋４が貫通する柱主筋貫通孔４３が設けられている。 A hollow mold 11 is fixed to one of the edge molds 40A. As shown in FIG. 4, the hollow mold 11 has a quadrangular pyramid shape that becomes thinner toward the tip. An opening 41 is formed in the central portion of the edge form 40A. A hollow mold 11 is inserted through the opening 41 of the small mold 40A, and the base end side of the hollow mold 11 is temporarily fixed to the small mold 40A by a bolt 42. Therefore, it is possible to insert the hollow mold 11 into the opening 41 and temporarily fix it only by providing the opening 41 in the central portion of the general steel form. Further, the depth of the hollow portion 3 can be changed by adjusting the protrusion dimension L of the hollow form 11 from the small form 40A.
A push bolt 12 that can be recessed from the extrusion hole 15 on the tip surface of the hollow mold 11 is screwed into the hollow mold 11. A high nut 13 for fitting an impact wrench is welded and fixed to the base end side of the push bolt 12.
Further, at the four corners of the edge formwork 40A, pillar main bar through holes 43 through which the pillar main bar 4 penetrates are provided.

図５は、型枠装置１の側型枠３０Ａ、３０Ｂを省略した状態の斜視図である。
小口型枠４０Ａには、移動装置５０が着脱可能となっている。この移動装置５０を小口型枠４０Ａに取り付けて底型枠２０上を走行させることで、小口型枠４０Ａが図５中矢印方向に移動して、中空コンクリート部材２を製造するための所定位置Ｐに設置または退避が可能となっている。 FIG. 5 is a perspective view of the formwork device 1 in a state where the side formwork 30A and 30B are omitted.
The moving device 50 can be attached to and detached from the edge formwork 40A. By attaching this moving device 50 to the edge formwork 40A and running it on the bottom formwork 20, the edge formwork 40A moves in the direction of the arrow in FIG. 5, and the predetermined position P for manufacturing the hollow concrete member 2 It can be installed or evacuated to.

以上の型枠装置１を用いて中空コンクリート部材２を製造する方法について、図６のフローチャートを参照しながら説明する。
ステップＳ１では、図７に示すように、小口型枠４０Ａ、４０Ｂを所定位置Ｐにセットする。このとき、小口型枠４０Ａに取り付けた中抜き型枠１１の表面に、中空部３内にコッターを成形するためのプラスチック樹脂製のコッター型枠１４を所定間隔おきに接着しておく。なお、側型枠３０Ａ、３０Ｂは所定位置Ｐから退避させておく。
ステップＳ２では、外型枠１０内（つまり底型枠２０、側型枠３０Ａ、３０Ｂ、および小口型枠４０Ａ、４０Ｂで囲まれる空間内）に配筋する。具体的には、図８に示すように、小口型枠４０Ａの柱主筋貫通孔４３に挿通して柱主筋４を配筋するとともに、この柱主筋４を囲んで所定間隔おきに図示しない帯筋を配筋する。また、柱主筋の他端側には、図示しない継手部を接続しておく。 A method of manufacturing the hollow concrete member 2 using the above formwork device 1 will be described with reference to the flowchart of FIG.
In step S1, as shown in FIG. 7, the edge formwork 40A and 40B are set at the predetermined positions P. At this time, the cotter mold 14 made of plastic resin for forming the cotter in the hollow portion 3 is adhered to the surface of the hollow mold 11 attached to the edge mold 40A at predetermined intervals. The side molds 30A and 30B are retracted from the predetermined position P.
In step S2, reinforcement is arranged in the outer formwork 10 (that is, in the space surrounded by the bottom formwork 20, the side formwork 30A, 30B, and the edge formwork 40A, 40B). Specifically, as shown in FIG. 8, the column main bar 4 is arranged by inserting it into the column main bar through hole 43 of the fore-edge formwork 40A, and the column main bar 4 is surrounded by the column main bar 4 and is not shown at predetermined intervals. Reinforce. Further, a joint portion (not shown) is connected to the other end side of the column main bar.

ステップＳ３では、外型枠１０の側型枠３０Ａ、３０Ｂ所定位置Ｐにセットする。具体的には、図８に示すように、側型枠３０Ａ、３０Ｂの移動装置３１を走行させて、側型枠３０Ａ、３０Ｂを所定位置Ｐにセットする。また、側型枠３０Ａ、３０Ｂに吊り治具６０を取り付ける。吊り治具６０は、中抜き型枠１１先端を位置決めするとともに、中抜き型枠１１先端の垂れやコンクリート打設時の浮き上がりを防止するためのものである。この吊り治具６０は、、側型枠３０Ａ、３０Ｂ同士の間に跨がって取り付けられた吊りブリッジ６１と、吊りブリッジ６１から吊り下げ支持された全ねじボルトである支持部６２と、を備える。 In step S3, the side molds 30A and 30B of the outer mold 10 are set at predetermined positions P. Specifically, as shown in FIG. 8, the moving device 31 of the side formwork 30A and 30B is run, and the side formwork 30A and 30B are set at the predetermined position P. Further, the hanging jig 60 is attached to the side formwork 30A and 30B. The hanging jig 60 is for positioning the tip of the hollow form 11 and preventing the tip of the hollow form 11 from sagging or rising when concrete is placed. The suspension jig 60 includes a suspension bridge 61 attached straddling between the side formwork 30A and 30B, and a support portion 62 which is a full screw bolt suspended and supported from the suspension bridge 61. Be prepared.

ステップＳ４では、外型枠１０内にコンクリートを打設する。このとき、中抜き型枠１１が打設したコンクリートにある程度埋まるまでコンクリートの表面高さが上昇したら、吊り治具６０を取り外す。
ステップＳ５では、コンクリートが硬化した後、中抜き型枠１１および外型枠１０を脱型する。具体的には、図９に示すように、側型枠３０Ａ、３０Ｂの移動装置３１を走行させることで、側型枠３０Ａ、３０Ｂを脱型して所定位置Ｐから退避させる。次に、図１０に示すように、小口型枠４０Ａに移動装置５０を取り付ける。この状態で、図１１に示すように、図示しないインパクトレンチを高ナット１３に嵌合して押しボルト１２を正転させることで、押しボルト１２の先端面が中空コンクリート部材２の中空部３の底面５を押して、底面５と中抜き型枠１１の先端面との間の空間を拡大させながら、中抜き型枠１１および小口型枠４０Ａを中空コンクリート部材２から脱型する。次に、図１２に示すように、小口型枠４０Ａに移動装置５０を走行させることで、中空コンクリート部材２の柱主筋４を小口型枠４０Ａの柱主筋貫通孔４３から抜き取る。その後、小口型枠４０Ｂを中空コンクリート部材２から脱型するとともに、中空コンクリート部材２の中空部３からコッター型枠１４を脱型する。 In step S4, concrete is placed in the outer formwork 10. At this time, when the surface height of the concrete rises until the hollow form 11 is buried in the placed concrete to some extent, the hanging jig 60 is removed.
In step S5, after the concrete is hardened, the hollow formwork 11 and the outer formwork 10 are removed. Specifically, as shown in FIG. 9, by running the moving device 31 of the side formwork 30A and 30B, the side formwork 30A and 30B are removed from the mold and retracted from the predetermined position P. Next, as shown in FIG. 10, the moving device 50 is attached to the edge formwork 40A. In this state, as shown in FIG. 11, by fitting an impact wrench (not shown) into the high nut 13 and rotating the push bolt 12 in the normal direction, the tip surface of the push bolt 12 becomes the hollow portion 3 of the hollow concrete member 2. The bottom surface 5 is pushed to expand the space between the bottom surface 5 and the tip surface of the hollow formwork 11, and the hollow formwork 11 and the small formwork 40A are removed from the hollow concrete member 2. Next, as shown in FIG. 12, by running the moving device 50 on the small formwork 40A, the pillar main bar 4 of the hollow concrete member 2 is extracted from the pillar main bar through hole 43 of the small formwork 40A. After that, the edge formwork 40B is removed from the hollow concrete member 2, and the cotter formwork 14 is removed from the hollow portion 3 of the hollow concrete member 2.

中空部３からコッター型枠１４を脱型する手順は、以下のようになる。すなわち、中空部３から中抜き型枠１１を引き抜くと、中抜き型枠１１に接着したコッター型枠１４は、中抜き型枠１１から離れて、中空部３の内壁面に残る。そこで、中抜き型枠１１を引き抜いた後、中空部３の内側に手を入れて、コッター型枠１４を取り外す。ここで、コッター型枠１４をプラスチック樹脂製としたので、コッター型枠１４を取り外した際、コッター型枠１４が中空部３の内壁面に形成した凹凸（コッター）を損傷するのを防止できる。 The procedure for removing the cotter form 14 from the hollow portion 3 is as follows. That is, when the hollow mold 11 is pulled out from the hollow portion 3, the cotter mold 14 adhered to the hollow mold 11 is separated from the hollow mold 11 and remains on the inner wall surface of the hollow portion 3. Therefore, after pulling out the hollow mold 11, put a hand inside the hollow portion 3 and remove the cotter mold 14. Here, since the cotter formwork 14 is made of plastic resin, it is possible to prevent the cotter formwork 14 from damaging the unevenness (cotter) formed on the inner wall surface of the hollow portion 3 when the cotter formwork 14 is removed.

〔実施例〕
例えば、中空コンクリート部材は、寝かせた状態で、長さが２１４０ｍｍ、奥行き１０４１ｍｍ、高さ１０４１ｍｍである。中空部（中抜き型枠）は、先端が４５０ｍｍ×４５０ｍｍ、基端が６００ｍｍ×６００ｍｍ、深さ（中抜き型枠の突出寸法）が１５００ｍｍである。なお、中抜き型枠の小口型枠に対する相対位置を適宜調整して、中空部の深さを９００ｍｍや１２００ｍｍとすることも可能である。 〔Example〕
For example, the hollow concrete member has a length of 2140 mm, a depth of 1041 mm, and a height of 1041 mm in a laid state. The hollow portion (hollow mold) has a tip of 450 mm × 450 mm, a base end of 600 mm × 600 mm, and a depth (protruding dimension of the hollow mold) of 1500 mm. It is also possible to adjust the relative position of the hollow formwork with respect to the small formwork appropriately so that the depth of the hollow portion is 900 mm or 1200 mm.

本実施形態によれば、以下のような効果がある。
（１）外型枠１０に中抜き型枠１１を仮固定した。よって、外型枠１０の内側にコンクリートを打設することで、中抜き型枠１１により中空コンクリート部材２に中空部３が成形される。このとき、中抜き型枠１１を、先端に向かうに従って細くなる四角錐台形状としたので、中抜き型枠１１の脱型が容易である。よって、中空コンクリート部材２を比較的容易に製造できる。
型枠装置１によれば、従来の底型枠、側型枠、小口型枠（端板）による基本的な構成を変えることなく、一方の小口型枠４０Ａのみに中抜き型枠１１を追加することで、中空部３を形成できる。このように、本発明の型枠装置１では、従来の鋼製型枠の一部に中抜き型枠を設けるだけでよいから、本発明を外径寸法の異なる種々のコンクリート部材の型枠装置に容易に適用でき、汎用性が高い。 According to this embodiment, there are the following effects.
(1) The hollow mold 11 was temporarily fixed to the outer mold 10. Therefore, by placing concrete inside the outer formwork 10, the hollow portion 3 is formed in the hollow concrete member 2 by the hollow formwork 11. At this time, since the hollow mold 11 has a quadrangular pyramid shape that becomes thinner toward the tip, it is easy to remove the hollow mold 11. Therefore, the hollow concrete member 2 can be manufactured relatively easily.
According to the formwork device 1, the hollow form 11 is added only to one of the small form 40A without changing the basic configuration of the conventional bottom form, side form, and small form (end plate). By doing so, the hollow portion 3 can be formed. As described above, in the formwork device 1 of the present invention, since it is only necessary to provide a hollow mold in a part of the conventional steel formwork, the present invention is a formwork device for various concrete members having different outer diameter dimensions. It can be easily applied to and has high versatility.

（２）コンクリートが硬化した後に押しボルト１２を正転させることで、中抜き型枠１１の先端から押しボルト１２が突出して、この押しボルト１２が中空部３の底面を押すので、中空コンクリート部材２から中抜き型枠１１を容易に脱型できる。
（３）中空コンクリート部材２に中空部３を設けたので、コンクリート部材が軽量化されて、輸送コストの低減、建設現場における建方重機のサイズダウン、および作業効率の向上を図ることができる。
（４）中空コンクリート部材２の中空部３の壁には、コッター型枠１４によりコッター部が形成される。中空コンクリート部材２の中空部３には、現場打設コンクリートが後打ちされるが、このコッター部を介して、中空コンクリート部材２と後打ちされた現場打設コンクリートとを強固に接合できる。 (2) By rotating the push bolt 12 in the normal direction after the concrete has hardened, the push bolt 12 protrudes from the tip of the hollow form 11 and the push bolt 12 pushes the bottom surface of the hollow portion 3, so that the hollow concrete member The hollow mold 11 can be easily removed from 2.
(3) Since the hollow portion 3 is provided in the hollow concrete member 2, the weight of the concrete member can be reduced, the transportation cost can be reduced, the size of the heavy construction machine at the construction site can be reduced, and the work efficiency can be improved.
(4) A cotter portion is formed by the cotter formwork 14 on the wall of the hollow portion 3 of the hollow concrete member 2. Cast-in-place concrete is post-cast to the hollow portion 3 of the hollow concrete member 2, and the hollow concrete member 2 and the post-cast concrete can be firmly joined via the cotter portion.

〔第２実施形態〕
図１３は、本発明の第２実施形態に係る中抜き型枠１１Ａが取り付けられた小口型枠４０Ａの斜視図である。
本実施形態では、中抜き型枠１１Ａが先端に向かうに従って細くなる円錐台形状である点が、第１実施形態と異なる。
本実施形態によれば、上述の（１）～（４）と同様の効果がある。 [Second Embodiment]
FIG. 13 is a perspective view of the edge form 40A to which the hollow form 11A according to the second embodiment of the present invention is attached.
The present embodiment is different from the first embodiment in that the hollow mold 11A has a truncated cone shape that becomes thinner toward the tip.
According to this embodiment, there is the same effect as the above-mentioned (1) to (4).

なお、本発明は前記実施形態に限定されるものではなく、本発明の目的を達成できる範囲での変形、改良等は本発明に含まれるものである。 The present invention is not limited to the above-described embodiment, and modifications, improvements, and the like to the extent that the object of the present invention can be achieved are included in the present invention.

１…型枠装置 ２…中空コンクリート部材 ３…中空部
４…柱主筋 ５…中空部の底面
１０…外型枠 １１、１１Ａ…中抜き型枠 １２…押しボルト
１３…高ナット １４…コッター型枠 １５…押出し穴
２０…底型枠 ２１…走行部 ３０Ａ、３０Ｂ…側型枠 ３１…移動装置
４０Ａ、４０Ｂ…小口型枠 ４１…開口 ４２…ボルト ４３…柱主筋貫通孔
５０…移動装置 ６０…吊り治具 ６１…吊りブリッジ ６２…支持部

1 ... Formwork device 2 ... Hollow concrete member 3 ... Hollow part 4 ... Pillar main bar 5 ... Bottom of hollow part 10 ... Outer formwork 11, 11A ... Hollow formwork 12 ... Push bolt 13 ... High nut 14 ... Cotter formwork 15 ... Extruded hole 20 ... Bottom formwork 21 ... Running part 30A, 30B ... Side formwork 31 ... Moving device 40A, 40B ... Small formwork 41 ... Opening 42 ... Bolt 43 ... Pillar main bar through hole 50 ... Moving device 60 ... Suspended Jig 61 ... Suspended bridge 62 ... Support

Claims (3)

中空部を有する中空コンクリート部材を製造する型枠装置であって、
前記中空コンクリート部材の外周面を成形する外型枠と、
前記外型枠に仮固定されて前記中空コンクリート部材の中空部を成形する中抜き型枠と、を備え、
前記中抜き型枠は、先端に向かうに従って細くなる形状であることを特徴とする型枠装置。 A formwork device that manufactures hollow concrete members with hollow portions.
An outer formwork that forms the outer peripheral surface of the hollow concrete member,
A hollow form that is temporarily fixed to the outer form and forms a hollow portion of the hollow concrete member is provided.
The hollow formwork is a formwork device characterized in that it has a shape that becomes thinner toward the tip. 前記外型枠は、板状の底型枠と、前記底型枠上に配置された一対の側型枠と、前記底型枠上に配置されて前記一対の側型枠の間を塞ぐ一対の小口型枠と、を備え、
前記一対の小口型枠の一方は、前記中抜き型枠の基端側が固定されるとともに、前記底型枠上を走行する移動装置が着脱可能であり、
前記中抜き型枠には、前記中抜き型枠の先端から突没可能な押しボルトが螺合されていることを特徴とする請求項１に記載の型枠装置。 The outer formwork is a pair of plate-shaped bottom formwork, a pair of side formwork arranged on the bottom formwork, and a pair of side formwork arranged on the bottom formwork and closing between the pair of side formwork. With a small formwork,
One of the pair of small formwork is fixed to the base end side of the hollow formwork, and a moving device traveling on the bottom formwork is removable.
The formwork device according to claim 1, wherein a push bolt capable of being recessed from the tip of the hollow formwork is screwed into the hollow formwork. 中空部を有する中空コンクリート部材を製造する方法であって、
請求項１または２に記載の型枠装置を設置するとともに、前記型枠装置の前記外型枠内に配筋する工程と、
前記型枠装置の前記外型枠内にコンクリートを打設する工程と、
コンクリートが硬化した後、前記型枠装置の前記外型枠および前記中抜き型枠を脱型する工程と、を備えることを特徴とする中空コンクリート部材の製造方法。 A method for manufacturing a hollow concrete member having a hollow portion.
A step of installing the formwork device according to claim 1 or 2 and arranging reinforcement in the outer formwork of the formwork device.
The process of placing concrete in the outer formwork of the formwork device,
A method for manufacturing a hollow concrete member, which comprises a step of removing the outer formwork and the hollow formwork of the formwork device after the concrete is hardened.
JP2020151898A 2020-09-10 2020-09-10 Formwork equipment and column member manufacturing method Active JP7437860B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2020151898A JP7437860B2 (en) 2020-09-10 2020-09-10 Formwork equipment and column member manufacturing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2020151898A JP7437860B2 (en) 2020-09-10 2020-09-10 Formwork equipment and column member manufacturing method

Publications (2)

Publication Number Publication Date
JP2022046053A true JP2022046053A (en) 2022-03-23
JP7437860B2 JP7437860B2 (en) 2024-02-26

Family

ID=80779776

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2020151898A Active JP7437860B2 (en) 2020-09-10 2020-09-10 Formwork equipment and column member manufacturing method

Country Status (1)

Country Link
JP (1) JP7437860B2 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3072294B1 (en) 1999-06-28 2000-07-31 佐藤工業株式会社 Formwork equipment for manufacturing hollow PCa members
JP3468733B2 (en) 2000-03-06 2003-11-17 東京電力株式会社 Propulsion pipe production formwork for sheath
JP2003231114A (en) 2002-02-07 2003-08-19 Toda Kogyo Kk Side form for manufacturing pc panel

Also Published As

Publication number Publication date
JP7437860B2 (en) 2024-02-26

Similar Documents

Publication Publication Date Title
KR101346986B1 (en) Method for producing concrete trestle, concrete trestle, and connecting member
KR101539447B1 (en) Beam form easy to removal and method for constructing the same
KR101427521B1 (en) Concrete container molding device and molding method
CN104831922A (en) Adjustable square column steel formwork
KR102107939B1 (en) Magnetic type embeded anchor
CN112428394A (en) Forming die of underground prefabricated part
EP1350609B1 (en) Method for casting concrete products
JP2022046053A (en) Formwork device and method for producing hollow concrete member
KR101641339B1 (en) Device for maintaining distance of concrete mold and method for constructing concrete building
KR20200065764A (en) Connecting joint structure and connecting method of reinforced concrete column and installaion system of reinforced concrete column
CN204960306U (en) Square column steel form with adjustable
JP2007296799A (en) Manufacturing device for precast concrete member
JPH06238649A (en) Hanging-up hole forming device
KR102209116B1 (en) Manufacturing method of precast concrete member using tube
JP3527106B2 (en) Concrete placement method using formwork fitted with boxless foam
KR101899860B1 (en) Construction method of concrete building wall
KR100527056B1 (en) Mold for retaining wall
CN220219021U (en) Prefabricated building component line box fixing device and prefabricated building component mould platform
JPH1177646A (en) Durable form and production of concrete unit
CN219427054U (en) Prefabricated part vertical die and vertical die manufacturing equipment
KR101831427B1 (en) Rebar-inserted Cap for Removing Form
JP2003225904A (en) Method for manufacturing concrete product having hollow part
CN219470998U (en) Pre-buried structure of prefabricated full assembly basis dowel
KR101827678B1 (en) Construction method of drainage structure
JPH08336821A (en) Device and method for demolding core-form for concrete molding

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20221122

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20230627

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20230710

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20230830

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20231030

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20231130

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20240119

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20240212

R150 Certificate of patent or registration of utility model

Ref document number: 7437860

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150