JP3017955U - Pillar form head jig in laminated construction method - Google Patents

Abstract

(57) [Summary] [Purpose] A column formwork in a laminated construction method in which the X and Y dimensions of the head of the column formwork are forcibly held with high accuracy and the main bars are accurately positioned, and which is simple and inexpensive to form. Provide head jig. [Structure] Column mold holders 2 formed by connecting a pair of corner members 4 and 4 fitted in a mold corner with a connecting member 5 are arranged to face each other, and a fastener 3 is provided between them. Connect with bolt 7 and nut 8. The column form head jig 1 accurately holds the X and Y dimensions of the column form head. Further, by positioning the main bar against the reference surfaces 17 and 18 of the recess 10 of the corner member 4 of the column frame holder 2, the main bar is accurately positioned.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a jig for a column form head in a laminated construction method, which is suitable for positioning the main reinforcement while forcibly holding the head of the column form for manufacturing reinforced concrete in a predetermined horizontal and vertical dimensions in a horizontal plane.

[0002]

[Prior art]

 A column formwork is used when constructing a reinforced concrete column, etc., such as a laminated construction method. The pillar formwork is assembled in a square shape, and its head is surrounded by a square-shaped formwork member in a square shape. That is, as shown in FIG. 8, the frame members 14 are connected to each other through the frame corners 15 to form a square frame body. A plurality of main bars 16 are arranged upright at a predetermined position in the inner space of a square columnar frame. In order to construct a reinforced concrete column with a predetermined shape with high precision and to maintain a predetermined strength, it is necessary to assemble the column form, especially the column form head, to the correct size, and Correct positioning is required. Especially in the case of the laminated construction method, the positioning of the main bars is important and directly affects the assemblability and strength. FIG. 8 shows a conventional pillar form head jig for positioning the pillar form head and positioning the main bar 16. As shown in the figure, the conventional jig regulates the shape of the mold corner 15 of the column mold head by fitting the L-shaped plate 24 made of wood or iron into the mold corner 15 of the pillar mold head. In addition, the main reinforcement 16 is brought close to the recess 25 of the L-shaped plate 24 to position the main reinforcement 16.

On the other hand, Japanese Utility Model Laid-Open No. 6-58049 is cited as one of the known techniques for controlling the size of the head portion of the pillar formwork. The jig described in "Structure of pillar formwork" encloses the periphery of the formwork materials arranged on all four sides with horizontal formwork retainers, and these are fixed to the ground side through bracket supports. It is connected to the floor anchor metal part and the two types of horizontal formwork holding materials are connected and fixed using pins and wedges to control the dimensions of the column formwork.

[0004]

[Problems to be solved by the device]

 In the case of the conventional column mold head jig shown in FIG. 8, as described above, the L-shaped plate 24 is simply fitted into the mold corner 15, and the shape of the mold corner 15 is restricted. Even if it is possible, the X and Y dimensions of the head of the column form cannot be forcibly held at the dimension values. Further, since the L-shaped plate 24 itself is not positioned at the correct position, the recess 25 is unlikely to serve as a reference plane for positioning the main bar, and the main bar cannot be positioned at the correct position. On the other hand, the known “column formwork structure” has a problem that the whole structure is complicated, it takes time to assemble the column formwork, and the positioning of the main bar is not particularly devised. .

The present invention was made in view of the above circumstances, and maintains the dimensional accuracy of the head of a column mold, accurately positions the main bar, and has a simple structure and is inexpensive to implement. An object of the present invention is to provide a pillar form head jig in a laminated construction method that can be applied to not only general examples but also column forms with walls or steps.

[0006]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention is a jig for forcibly holding a column form head at a predetermined position and positioning a main bar, which is adjacent to the column form head. Is fixed between the corner members so that the space between the corner members fitted into the mold corners and the corner members is maintained at a predetermined dimension in the lateral (X) direction within the horizontal plane of the column mold head. And a pair of pillar form frame holders, which are arranged so as to face each other in the vertical (Y) direction in the horizontal plane, to maintain a predetermined distance between the pillar form frame holders. A pillar form head jig in a stacking method is provided, which is provided between the two and is provided with a fastener for fixing the two at the above-mentioned interval, and a reference surface for determining the mounting position of the main bar is formed on the corner member. To do. The tightening tool is composed of an elongated bolt inserted between hollow pipes fixed on the corner members of the pair of column frame holding tools and a nut of the tightening tool, and is screwed to the tip of the bolt. The thread length of the engraved screw part is the lateral dimension of the column form holder when the bolt and nut are in pressure contact with the end face of the hollow pipe at the position where the nut is screwed up to the beginning of cutting of the screw part. It is characterized in that it is formed so as to be kept at a predetermined value. Further, in the jig for locating the column reinforcement in the head portion of the column-shaped frame having the step, the holding member and the holder for the column-shaped frame which come into contact with the side surface of the column-shaped frame having the step are connected via a fastener. It is characterized by being connected.

[0007]

[Action]

 A pillar form frame holder formed by holding a predetermined Y dimension is fitted into the head of the pillar form frame, and the Y dimension of the adjacent mold corner is forcibly held at a predetermined size. Next, a fastening tool made up of bolts and nuts is installed between a pair of column form holders arranged opposite to each other, and the nut is screwed up to the bolt cutting start portion. As a result, the bolts and nuts are brought into pressure contact with the end faces of the hollow pipes for holding the fasteners of the pillar form holder, and the X dimension of the pair of pillar form holders is regulated and held at a predetermined distance in the X direction. . As a result, the X and Y dimensions of the head of the column mold are forcibly held at the predetermined values. Next, the main bar is brought into contact with the reference surface formed on the corner member of the pillar form holder. As a result, the main muscles are accurately positioned.

[0008]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. 1 is a perspective view showing the overall structure of the present embodiment, FIG. 2 is an enlarged sectional view taken along the line AA of FIG. 1, FIG. 3 is an enlarged sectional view taken along the line BB of FIG. 1, and FIG. 1 is a sectional view taken along line CC of FIG. 1 showing the structure, FIG. 5 is a top view showing the forced holding state of the head of the column formwork and the positioning of the main bar according to the present embodiment, and FIG. 6 is of the column formwork with a wall. FIG. 7 is a partial side view showing an embodiment of the present invention in the case of the present invention, and FIG. 7 is a partial side view showing the embodiment of the present invention in the case of a columnar frame head portion having a step.

As shown in FIG. 1, the pillar form head jig 1 is roughly divided into a pillar form holder 2 and a fastener 3. The column form holder 2 includes a corner member 4, a connecting member 5, a holding member 6 and the like, and is formed of a pair of members. Further, the tightening tool 3 is composed of an elongated bolt 7 and a nut 8 of this tightening tool in the present embodiment, and the bolt 7 is held by a hollow pipe 9 fixedly mounted on the corner member 4. The structure of each part will be described in detail below.

The corner member 4 is composed of an L-shaped flat plate member having a right-angled recess 10 formed therein. An angle-shaped holding member 6 is fixed to one side of the outer edge as shown in FIG. As shown in FIG. 3, the pair of corner members 4 and 4 to which the holding member 6 is fixed are connected to the other side of the outer edge by the connecting member 5 which is also an angle-shaped member, and the column frame holder 2 of the integral structure. Become. The distance between the inner surfaces of the holding members 6 of the corner members 4 and 4 joined by the connecting member 5 corresponds to the predetermined Y dimension of the head of the column frame (FIG. 2).

As shown in FIGS. 1 and 3, a hollow pipe 9 is fixed to the upper surface of the corner member 4. The bolts 7 of the tightening tool 3 are inserted and installed in the hollow pipes 9, 9 between the column form holders 2, 2 arranged so as to face each other as shown in FIGS. 1 and 4. As shown in FIG. 4, the bolt 7 is inserted into the hollow pipe 9 in a state where the end face of the head 11 thereof is in contact with the outer end face of the hollow pipe 9 of the column-shaped frame holder 2 on one side. Further, the head portion 11 of the bolt 7 contacts the surface of the formwork member 14. Therefore, it is stopped. In addition, the bolt 7 is formed by threading the threaded portion 12 so that the cutting start portion 13 of the threaded portion 12 is aligned with the other end surface of the hollow pipe 9. That is, the bolt 7 is configured to specify the length L from the end surface of the head portion 11 to the cutting start portion 13 of the threaded portion 12, and in the state of this length L, a pair of column form holders opposed to each other. The space in the X direction between the tools 2 and 2 is maintained at a predetermined dimension. That is, as shown in FIG. 3, at the mounting position of the bolt 7 shown in FIG. 4, the distance between the inner surfaces of the pair of connecting members 5 and 5 facing each other corresponds to a predetermined X dimension. Since the bolt 7 is prevented from rotating as described above, it can be tightened only by rotating the nut 8.

FIG. 5 shows a state where the pillar form head jig 1 of the present embodiment of the pillar form head is attached. The column mold head is composed of four frame members surrounded by four mold members 14, and the intersections of the vertical and horizontal mold members 14, 14 form right-angled mold corners 15. First, the pillar form holder 2 having the above structure is fitted to one side of the pillar form head, and the pillar form holder 2 is fitted to the other side of the pillar form head opposite to the one side. The inner surface of the holding member 6 hits the outer surface of the mold corner 15, and the head of the column mold restricts the Y direction to a predetermined Y dimension. Next, the bolts 7 are inserted into the hollow pipes 9, 9 of the column-shaped frame holders 2, 2 which face each other. The nut 8 is screwed onto the bolt 7, and the threaded portion 12 is screwed up to the cutting start portion 13. As a result, the inner surfaces of the connecting members 5 of the pair of column form holders 2 and 2 press the outer surfaces of the form members 14 to move the column form holders 2 and 2 toward each other, and the nut 8 is screwed in. Upon completion, the dimension in the X direction of the inner surfaces of the connecting members 5 and 5 of the pair of column frame holders becomes the regular X dimension. As described above, the column mold head has a correct shape due to the right angle of the frame corner 15 by the corner member 4 of the column mold holders 2, 2 and the regulation in the Y direction and the regulation in the X direction by the fastener 3. , X, Y dimensions are forcibly held.

Next, as shown in FIG. 5, the outer periphery of the main bar 16 is brought into contact with the reference surfaces 17 and 18 of the recess 10 of the corner member 4 of the column frame holder 2. The reference surfaces 17 and 8 are set at the predetermined mounting surface positions of the main bars by positioning the pillar form holder 2 at the predetermined position. Therefore, the main bar 16 contacting the reference surfaces 17 and 18 is positioned at the correct position. By positioning the main bars 16 at the four corners as described above, other main bars 16 can be easily positioned.

FIG. 6 shows the pillar form head jig 1 a when the pillar form head is assembled in contact with the wall surface 19. This has substantially the same shape as the above-mentioned embodiment. In this case, one connecting member 5a of the pair of pillar form holders 2 and 2 is placed in contact with the wall surface 19.

FIG. 7 shows a pillar form head jig 1b in the case where one of the form members 14 is a pillar form head projecting upward. In this case, it has substantially the same structure as that of the above-mentioned embodiment except that the bent plate 20 is formed on the corner member 4b of the column frame holder 2b. An angle-shaped holding member 21 abuts on the side surface of the projecting mold member 14, and the holding member 21 is connected to the column mold holder 2b by a fastener made of a bolt 22, a nut 23 and the like.

[0016]

According to the present invention, the following remarkable effects are obtained. 1) By adopting a structure in which the Y dimension is regulated by fitting the column form holder and the X direction is regulated by tightening the fastening tool, the X and Y dimensions of the column form head are predetermined. Is held forcibly at the value of. This will lead to the accurate creation of concrete columns. 2) Since the head of the column mold is held in a predetermined correct shape, the reference plane for positioning the main bar is positioned at a predetermined position. Therefore, the main bar is accurately positioned by bringing the main bar into contact with the reference surface. 3) The column form holder is made up of plates and angle members fixed together, and the fasteners are also bolts and nuts, making it extremely simple and inexpensive to implement. Also, since the bolts are prevented from rotating, the tightening work of the bolts can be done by one person from one direction, and the tightening work efficiency can be improved. 4) Further, the effect can be enhanced not only in the case of a general columnar frame head but also in the case of having a wall surface or a step.

[Brief description of drawings]

FIG. 1 is a perspective view showing the overall structure of an embodiment of the present invention.

FIG. 2 is an enlarged sectional view taken along line AA of FIG.

FIG. 3 is an enlarged sectional view taken along line BB of FIG.

FIG. 4 is an enlarged cross-sectional view taken along line CC of FIG.

FIG. 5 is a plan view showing a state in which the present embodiment is attached to the head of a column mold.

FIG. 6 is a side view showing a pillar formwork head jig attached to the head of a formwork body provided in contact with a wall surface.

FIG. 7 is a side view showing the structure of a column mold head jig in the case of a column mold having steps.

FIG. 8 is a plan view showing a mounting state of a conventional pillar form head jig.

[Explanation of symbols]

 1 pillar form head jig 1a pillar form head jig 1b pillar form head jig 2 pillar form holder 3 tightening tool 4 corner member 4b corner member 5 connecting member 5a connecting member 6 holding member 7 Bolt 8 Nut 9 Hollow pipe 10 Recessed portion 11 Head 12 Threaded portion 13 Cutting start portion 14 Formwork member 15 Formwork corner 16 Main bar 17 Reference surface 18 Reference surface 19 Wall surface 20 Bending plate 21 Holding member 22 Bolt 23 Nut

Claims (3)

[Scope of utility model registration request] 1. A jig for forcibly holding a pillar form head at a predetermined position and positioning a main bar, the corner member being fitted into an adjacent form corner of the pillar form head. And a connecting member which is installed and fixed between the corner members so as to maintain a predetermined distance in the lateral (X) direction in the horizontal plane of the head of the pillar form frame. And a pair of pillar form frame holders arranged to face each other in the vertical (Y) direction in the horizontal plane so as to maintain the space between them at a predetermined size, and fix them at the space. And a fastening tool for forming a reference surface for determining the mounting position of the main bar on the corner member. 2. The tightening tool comprises an elongated bolt inserted between hollow pipes fixed onto the corner members of the pair of column form holders and a nut of the tightening tool, and the bolt tip. The thread length of the threaded portion is the lateral dimension of the column form holder in which the bolt and the nut are in pressure contact with the end surface of the hollow pipe at the position where the nut is screwed up to the beginning of cutting of the threaded portion. The column form head jig in the stacking method according to claim 1, which is formed so as to maintain a predetermined value. 3. A jig for locating a column bar in a head of a columnar frame having a step, wherein a holding member that abuts a side surface of the columnar frame having the step and the column frame holder are fasteners. The pillar formwork head jig in the stacking method according to claim 1, which is connected via a jig.