JPH055362A - Manufacture of form - Google Patents

Abstract

PURPOSE:To assemble easily and sturdily forms for forming the concrete column of a polygonal cross-sectional area, in a state that the forms can be applied to another use without boring through holes through respective form panels. CONSTITUTION:A set of a plurality of form panels 1 (1A, 1B, 1C, 1D) are arranged on polygonal respective-sides, and are positioned by panel supporting frames 2 arranged at respective corner sections, and in the same manner, the set of the panels 1 are laid in a plurality of steps on the panel supporting frames 2, and thus a form 20 of a specified dimension and shape is assembled. According to the panel set of the respective steps of the assembled form 20, engaging frame bodies 17 to be fitted on the panel supporting frames 2 and to be diagonally positioned are bounded to each other with wire ropes 18. Besides, the wire ropes 18 are wound zigzag manner and are tightly bound to the respective sets of the panels in a state that a displacement force is applied inside.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a formwork, which is mainly used when a pillar or a beam having a polygonal cross section of a building is cast by using concrete or reinforced concrete. ..

[0002]

2. Description of the Related Art Conventionally, this type of general formwork has been used in which each constituent member is brought into a building site in a disassembled state and then assembled in a predetermined size and shape at the building site. For example, taking a case of forming a concrete pillar having a rectangular cross section, as shown in FIGS. 19 and 20, at the construction site, four formwork panels 10 are used.
1 (101A, 101B, 101C, 101D) is arranged so as to be positioned on each side of the quadrangular shape, and a pipe-shaped thick piece 102 is applied to the outer surface of each panel 101,
Panel 101 and edge lumber 102 facing each other
Both screw bolts 103 (separators) are laid across the two members, and the two members 101 and 102 are tightened and fixed inward by screwing a tightening member 104 such as a nut. The formwork 105 was assembled by stacking in steps to form a concrete placing space of a predetermined size and shape.

[0003]

In the conventional mold as described above, the double screw bolts (separator) 103 are bridged to fix the mold panel 101 and the like, so that the through hole is formed in the panel 101. Since it is necessary to form the through hole, and the position of the through hole is not constant and varies depending on the concrete structure to be cast, the form panel cannot be diverted. Also, since there is no common panel support means for stacking the above four panels 101 in a plurality of stages, it is difficult to assemble them robustly before they are brought into the field, and even if they are assembled, However, there is a risk of collapsing during transportation, and therefore, conventionally, it is necessary to rely on on-site work for formwork assembly, so it takes time to assemble, requires a lot of labor, and soars costs. There was an unavoidable problem.

The present invention has been made to solve the above-mentioned problems, and it is possible to easily and robustly assemble a mold of a predetermined size and shape, and to convert the mold panel. It is an object of the present invention to provide a method for manufacturing a mold that can extend the number of times.

[0005]

In order to achieve the above object, in the method for manufacturing a mold according to the invention of claim 1, a plurality of mold panels for forming a set are positioned on each side of the polygon. In addition to arranging them, the set of these formwork panels is positioned by the panel support frame arranged outside each corner between the adjacent formwork panels, and a plurality of the above-mentioned formwork panel sets are similarly arranged. Assemble a panel mold of a desired size by sequentially stacking and supporting the panel support frame, and then,
Of the locking structures attached to the panel support frames corresponding to the sets of form panel for each stage, the locking structures at diagonal positions of the polygon are fastened together via wire ropes. At the same time, the wire rope is laid out in a zigzag shape in the stacking direction described above, and then an inward displacement force is applied to the mold panel panels of the above-mentioned groups through the wire rope to form the mold of each stage. The feature is that the frame panels are tightly bound together.

The method of manufacturing a mold according to the second aspect of the invention is
Instead of the wire rope, a plurality of sets of bolts, one set of which is connected via a bolt joint, are used to fasten the locking structures in diagonal positions on the same plane.

According to the third aspect of the present invention, there is provided a method for manufacturing a formwork, wherein the wire rope and the bolt are used together for fastening the locking structures at diagonal positions.

[0008]

According to the first aspect of the present invention, a plurality of sets of formwork panels are sequentially stacked and supported on the panel support frame, and the locking structures attached to the panel support frame are at diagonal positions. Fasten with a wire rope, and then wire the wire rope in a zigzag shape in the stacking direction of the set of formwork panels, and through the wire rope, the inward displacement force between the formwork panels of each set. By tightly connecting the mold panel panels of each stage to each other, it is possible to easily and robustly assemble a mold of a predetermined size and a predetermined shape without forming a through hole in the panel. Therefore, a prefabricated form can be introduced into the formwork assembly.

Further, according to the second aspect of the present invention, since it is not necessary to form a through hole in the panel, and the bolts are used to fasten the diagonally-arranged locking structures, the bolts are attached between the panels. It acts as a stiffener and makes the assembly form more robust.

Further, according to the third aspect of the present invention, since the locking structures are fastened together by using the wire rope and the bolts together, the mechanical strength is high and the assembly type does not cause collapse during transportation. You can get a frame.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view showing an example of a mold obtained by the manufacturing method of the present invention.

In the figure, 1 (1A, 1B, 1C, 1
D) is, for example, four formwork panels for forming a concrete pillar having a rectangular cross section, and is made of metal such as aluminum, wood, or synthetic resin, and as shown in FIG. It is arranged at a position that constitutes each side of the quadrangle.
Reference numerals 2 (2A, 2B, 2C, 2D) are four panel support frames arranged at the corners between the adjacent ones of the panel 1, and these panel support frames 2 have a cross section of approximately M.
As shown in FIGS. 3 and 4, both L-shaped portions 2a and 2b in the width direction are brought into contact with the outside of the end portion of the panel 1 to position each panel 1 and As shown in FIG. 2, the set of panels 1 is stacked and supported in a plurality of stages, for example, three stages (F1, F2, F3). Three
Is a reinforcing rib of each panel support frame 2.

As shown in FIG. 3, each panel support frame 2 is penetrated by a two-screw bolt 6 having screw portions 4 and 5 formed at both ends thereof. This double screw bolt 6
As shown in FIG. 5 and FIG. 6, a plurality of hooks 7 are provided at the outer end of the support frame 2, and a metal fitting 8 and a spacer 9 that come into contact with the outer surface side of the support frame 2 are fitted and inserted.
Is crimped to the panel support frame 2 side by a nut 10 screwed to the outer end side screw portion 5 of the both screw bolts 6. Reference numeral 11 denotes a tubular collar fitted to the outer end sides of the both screw bolts 6, and 12 denotes a rubber or synthetic resin tubular packing fitted to the inner end sides of the both screw bolts 6.

Reference numeral 13 denotes a hook hanger member, which is shown in FIGS.
As shown in FIG. 9, it comprises a base portion 13a having a screw hole 14 and both shoulder portions 13b, 13c, and the screw portion 4 on the inner end side of the both screw bolts 6 is screwed into the screw hole 14.
Both ends of a substantially U-shaped hook member 16 that holds the reinforcing bar 15 of the concrete column are locked in the grooves 13d and 13d of the shoulders 13b and 13c of the hook hanger member 13. The hook member 16 is provided with the hook hanger member 13, the screw bolts 6 and the like, and an engaging structure 17 is provided.
(17A, 17B, 17C, 17D).

The hook member 16 is fastened with a wire rope 18 which is wound around in a zigzag shape in the panel stacking direction between the locking structures 17 which are in a diagonal relationship. The panel 1 is tightly attached to the inside. In the figure, 19 is a position regulating plate which has a serrated portion on the outer periphery and is fitted to the reinforcing bar 15 in order to keep a constant angle between the panel 1 and adjacent ones.

Next, a method of assembling and manufacturing a mold having a predetermined size and a predetermined shape by using the above-mentioned constituent members will be described in the order of steps. First, the first four panels 1A, 1
B, 1C, 1D are arranged so as to be located on each side of the quadrangle, and these four panels 1A, 1B, 1C, 1
Position D by the panel support frame 2. Similarly, a set of panels 1 in the second and third stages is sequentially supported on the panel support frame 2 in a stacked manner.

On the other hand, a hook member for holding the reinforcing bar 15 while holding the angle between the adjacent ones of the panels 1 constant by the position regulating plate 19 fitted into the reinforcing bar 15. 16 is the groove 1 of the hook hanger member 13
It is locked to 3d and 13d.

After that, while diagonally connecting the hook members 16 to each other with the wire rope 18, the wire rope 18 is drawn in a zigzag shape in the panel stacking direction as shown in FIG. Is given,
For the bolt 6 of the locking structure 17, the hook hanger member 1
When 3 is screwed, the wire rope 18 is clamped between the reinforcing bar 15 and the hook member 16. As a result, an inward displacement force is applied to each panel 1 by the pulling force of the wire rope 18 and the panels 1 are tightly connected to each other, so that the mold 20 as shown in FIG. 1 is assembled.

By carrying out the above steps in a factory or the like, the assembly of the predetermined mold 20 is completed. The formwork 20 thus assembled is loaded on a truck or the like, carried into a construction site, and then installed in a predetermined place.
Then, a predetermined concrete structure is constructed by placing concrete in the built-in mold 20 and solidifying it.

Then, the panel 1 is disassembled together with the panel support frame 2 by removing the screw bolts 6 from the hook hanger member 13.

Here, the panel 1 is tightly connected to form 2
In the case of configuring 0, since the locking structures 17 attached to the panel support frame 2 may be fastened together with the wire rope 18, it is not necessary to form a through hole or the like in the panel 1, and the panel 1 is diverted and used. You can increase the number of times. Further, since the set of four panels 1 is stacked and supported by the panel support frame 2 in the three stages F1, F2, F3, the assembling work is simplified and the labor on site can be reduced.

FIGS. 11 and 12 show another embodiment of the present invention, in which two pairs of bolts 21, one pair forming one pair, are used for fastening the locking structures 17 in diagonal positions in the same plane. 21 and a cross-shaped bolt joint 22 are used. That is, a connector 23 having a hook member engaging hole 23a and a screw hole 23b is prepared for the hook member 16 as shown in FIG. 23b, one end side of the bolt 21 is screwed and the other end side of the bolt 21 is screwed to the bolt joint 22.

According to this embodiment, the bolts 21 and 2 are
The mold 20 is reinforced by 2. In this case, if the wire rope 18 is also used at the same time, the mechanical strength can be further enhanced and a durable mold can be assembled.

By the way, when a beam or the like is connected to the concrete column, the structure shown in FIG. 14 may be adopted. That is, a hard urethane (foam urethane) or styrofoam obstacle 24 is provided at a portion to be joined such as a beam, concrete is poured into the mold 20 to solidify, and then the obstacle 24 is removed to leave a space. Beams and the like can be combined. Hard urethane or the like is used as the obstacle 24 because it is easily peeled off after the concrete is solidified.

In each of the above-mentioned embodiments, it is possible to provide a thick end material 25 on the outer surface of the panel 1 if necessary, and in that case, a metal fitting 27 having a hook 26 as shown in FIG. It is advisable to mount it on the bolt 28 that is erected on the material 25. As an example of its use, for example, as shown in FIG. 16, after the thick material 25 with bolts is superposed on the outer surface of each panel 1, the hook 26 and the hook 7 of the locking structure 17 are connected to the wire rope 29. By connecting with, the mold 20 having high strength can be obtained.

In the above embodiment, the panel supporting frame 2 having a substantially M-shaped cross section is provided with the plate-like reinforcing ribs 3 as shown in FIG. 1
As shown in FIG. 7, a triangular box-shaped reinforcing body 31 having a tubular body 30 through which the tubular collar 11 of the locking structure 17 penetrates may be fixed to the back surface of the panel support frame 2. In this case,
The strength of the panel support frame 2 can be further increased,
The assembling formwork 20 can be strengthened.

Further, as a modified example of the assembly formwork 20 shown in FIG. 10, as shown in FIG. 18, the wire ropes 18 are stretched in a truss shape between the locking structures 17 which are in a diagonal relationship. Diagonal locking structure 17
It is suitable to adopt a prefabricated form in which a separator 33 with a turnbuckle 32 and the like are erected across the comrades and the assembly formwork 20 is made to be sturdy and preassembled in a factory or the like and carried into the field. It is possible to prevent deformation and collapse during transportation while reducing the overall bulk.

In each of the above-mentioned embodiments, an example of using four panels 1 in one step to form a concrete column having a quadrangular cross section has been described, but the present invention is not limited to the quadrangular shape. Not a thing. Moreover, the mold panel 1 may be reused after the mold is broken after the concrete is hardened.
In addition, by making the formwork panel 1 a decorative panel, it can be fixed to the concrete even after it is hardened, so that it is possible to save the time and effort of dismantling the concrete and laying the decorative panel after the concrete is hardened. Good. In addition, in each of the above-described embodiments, the four panels 1 are tightly connected to each other to form the square form 2
When configuring 0, the entire formwork 20 was further reinforced by assembling at the factory by spirally winding a wire around the outer periphery of the reinforcing bar 15 arranged at the four corners inside the formwork 20. It is possible to effectively promote the prefabricated form of carrying the formwork 20 to the site.

[0029]

As described above, according to the first aspect of the present invention, a plurality of sets of formwork panels are respectively positioned by the panel support frames arranged outside the corners between adjacent panels. Attached to the panel support frame, fasten the diagonally opposite locking structures with a wire rope, and further wrap the wire rope in a zigzag shape to give an inward displacement force to each panel of each group. Since it has been tightened, the panel has a predetermined size and shape without the need to form through holes that require concrete leak treatment.
In addition, it is possible to easily assemble a sturdy mold that does not cause deformation or collapse even if it is subjected to rough handling. Therefore, the prefabricated form can be introduced into the assembling of the mold, that is, the manufacturing, so that the on-site work can be rationalized, the labor can be saved, and the cost can be reduced. Further, since it is not necessary to form a through hole in the panel, the panel can be diverted and used, and the number of years of diverted use can be sufficiently increased.

According to the second aspect of the present invention, instead of the wire rope, the locking structures at diagonal positions are connected by bolts, so that the mold is reinforced by the bolts, and a more robust assembly mold is formed. Is obtained.

Further, according to claim 3, the combined use of the wire rope and the bolt further enhances the mechanical strength of the mold, which is effective as a prefabricated mold.

[Brief description of drawings]

FIG. 1 is a plan view showing an example of a mold frame assembled by the method of the present invention.

FIG. 2 is an explanatory diagram showing a state in which a plurality of panel sets are stacked by a panel support frame.

FIG. 3 is a partially cutaway plan view showing a configuration of a main part. .

FIG. 4 is a perspective view showing a part of a panel support frame.

FIG. 5 is a plan view showing a metal fitting with a hook in the locking structure.

FIG. 6 is a side view showing a metal fitting with a hook in a locking structure.

FIG. 7 is a plan view showing a hook hanger member.

FIG. 8 is a side view showing a hook hanger member.

FIG. 9 is a rear view showing the hook hanger member.

FIG. 10 is a conceptual diagram showing wiring of a wire rope.

FIG. 11 is a plan view of a formwork showing another embodiment of the present invention.

12 is a plan view showing a configuration of a main part of FIG. 11. FIG.

13 is a cross-sectional view showing the connector of FIG.

FIG. 14 is a plan view of a mold showing still another embodiment of the present invention.

FIG. 15 is a partial cross-sectional view of a thick material to which a metal fitting with a hook is attached.

FIG. 16 is a plan view of a formwork showing another embodiment using the thick ends of FIG.

FIG. 17 is a perspective view of a main part showing a modified example of the panel support frame.

FIG. 18 is a schematic view showing a modified example of the assembly formwork.

FIG. 19 is a side view showing a conventional mold.

20 is a plan view of that of FIG. 19. FIG.

[Explanation of symbols]

 1A, 1B, 1C, 1D Form panel 2A, 2B, 2C, 2D Panel support frame 17 Locking structure 18 Wire rope 21 Bolt 22 Bolt joint

Claims (1)

Claims: 1. A plurality of formwork panels forming a set are arranged so as to be positioned on each side of a polygon, and a set of these formwork panels is provided for an adjacent formwork. Positioned by the panel support frame located outside each corner between the panels,
Similarly, a plurality of sets of the formwork panels are sequentially stacked and supported on the panel support frame to assemble a polygonal formwork of a desired size, and then, corresponding to each set of formwork panel sets. Of the locking structures attached to the panel supporting frames, the locking structures at diagonal positions of the polygon are fastened via wire ropes, and the wire ropes are zigzaged in the stacking direction. After being circulated in a circular shape, the inward displacing force is applied to the mold panel panels of each group through the wire rope to tightly connect the mold panel panels of each stage. Formwork manufacturing method. 2. A plurality of sets, one set being one set connected via bolt joints for fastening the locking structures in diagonal positions on the same plane, instead of the wire rope in claim 1. A method of manufacturing a formwork, characterized in that the bolts of the above are used. 3. The fastening of diagonally opposite locking structures,
A method of manufacturing a mold, wherein the wire rope according to claim 1 and the bolt according to claim 2 are used together.