JPH08333891A - Hollow panel for form, and form system therewith - Google Patents

Abstract

PURPOSE: To construct a lightweight sheathing board that is composed freely of panels in desired dimensions in the width by a method wherein opposite plate-like parts and a plurality of ribs are molded into a unit with engaging parts provided at the ends in the direction intersecting the direction wherein the ribs are extending. CONSTITUTION: A hollow panel 10 is constructed of opposite platelike parts 10a, 10b and a plurality of ribs 10C..., and because of its hollow structure made up as a unit by extrusion molding, it becomes lightweight. Recesses (engaging parts) 11, 11 for connecting with adjoining panels 10 are provided at the ends in the direction intersecting the direction wherein the ribs 10C are extending. One end of a connecting piece is fitted into the recess 11 of one panel and the other end of the connecting piece is fitted into the recess 11 of another panel 10. In the case where the hollow panels are used as sheathing boards in various dimensions for floor slabs, a sheathing board composed of panels in desired dimensions in the width and in flatness can be constructed freely by connecting the panels 10 in various standardized sizes.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a formwork hollow panel used as a dam plate of a formwork and a formwork system using a plurality of such panels.

[0002]

2. Description of the Related Art As is well known, in the case of constructing beams and columns with cast-in-place reinforced concrete, a formwork is used to define the concrete to be cast into the shapes of the beams and columns. There is. In general, as a mold of this type, a weir plate is constructed by interposing a separator between a pair of plywoods of regular length, and by fixing a stake or a vertical edge thick with nails on the back side of the plywood. A plywood formwork is used which is reinforced and is further tightened with a lateral edge thick using a pipe material and a foam tie. However, in such a plywood formwork, concrete is a strong alkali, so that the plywood is made of an alkali-resistant material and does not produce extracts such as sap that cause curing failure. In addition, there are restrictions on various materials and construction management such as coating of acrylic or urethane paint on the opposite surface so that the pattern etc. of the plywood surface is not reflected on the concrete surface. In addition, since the plywood itself is inferior in strength, there is a limit to repeated use, and there is a drawback in that it requires a great deal of labor to attach and remove a splint or the like for reinforcement.

[0003]

Therefore, in order to rationalize the construction method using the above-mentioned plywood form, a panel having grid-like ribs provided on the back surface of a flat plate made of steel or stainless steel generally called metal foam is provided. The formwork system used has been proposed. According to the formwork system using such a panel, there is an advantage that the finished surface is less likely to be deformed or distorted due to its excellent strength, and that it has smoothness peculiar to metal. However, in the formwork system using the steel panel, since the weight of each panel is extremely heavy, it is difficult to configure a long panel, and it causes heavy labor of transportation and assembly work, Moreover, since the unit price of each panel is high, there has been a problem that the formwork system is soared.

Therefore, as a means for solving the problems of various molds as described above, for example, Japanese Patent Laid-Open No. 6-10133.
A prismatic formwork as seen in Japanese Patent No. 5 has been proposed. FIGS. 15 and 16 show a conventional formwork panel described in the above publication and a formwork system for a prism using the formwork panel. The formwork system 1 is, as shown in FIG. One face plate 2a of the plastic hollow panel 2 in which face plates 2a and 2b constituting the front and back surfaces are integrally connected by a plurality of reinforcing ribs 2c arranged in parallel along the longitudinal direction.
16 is cut, the other face plate 2b opposite to the cut 3 is bent, and the obtained pair of substantially hollow L-shaped hollow panels 2 are joined to each other as shown in FIG. The portions 2d are abutted against each other to form a tubular body having a rectangular cross section. The conventional hollow panel 2 and the formwork system 1 using the conventional hollow panel 2 are said to have the advantage of being easy to process and assemble because the hollow panel 2 is lightweight and strong.

However, in the above-mentioned conventional hollow panel 2 and the formwork system 1 using the same, since the end portions 2d of the hollow panel 2 are simply abutted against each other to assemble, the above-mentioned joining portion is made into a conventional structure. Similar to the plywood form, there is a problem that it requires extra work such as interposing a face plate. In addition, since the hollow panel 2 has a fixed length and cannot be connected as it is in the extending direction of the rib 2c or in the direction orthogonal to this extending direction, a length having a free length according to the size of each part can be obtained. There is also a problem that it is difficult to construct a dam plate that is long and smooth.

The present invention has been made to effectively solve the problems of the above-mentioned various conventional mold panel and mold system using the same, and is lightweight and excellent in rigidity.
It is an object of the present invention to provide a hollow panel for formwork, which is easy to construct, and is capable of freely forming a smooth weir plate having a desired panel width length, and a formwork system using the hollow panel. is there.

[0007]

According to a first aspect of the present invention, there is provided a mold hollow panel (hereinafter abbreviated as a hollow panel) according to the present invention, wherein a plurality of plate-shaped portions facing each other are connected to each other. Ribs are integrally formed with each other, and an engaging portion for connecting to an adjacent formwork hollow panel is formed at an end portion in a direction orthogonal to the extending direction of the ribs. It is a thing.

The invention according to claim 2 is characterized in that the plate-like portion and the rib according to claim 1 are integrally formed of plastic. The invention described in claim 3 is characterized in that a space defined by the plate-shaped portions and the ribs on the two opposing surfaces of the hollow panel according to claim 2 is filled with a foam. . Further, the invention described in claim 4 is the same as claim 2
Alternatively, a transparent material is used as the plastic forming the hollow panel described in 3, and an opening for confirming the filling of concrete is formed in one of the plate-shaped portions. Is.

Next, in the formwork system according to claims 5 and 6, a flat dam plate is constructed by a plurality of hollow panels according to any one of claims 1 to 4. According to a fifth aspect of the present invention, the engaging portion is a concave portion, one end portion of the connecting piece is fitted in the concave portion of the one mold hollow panel, and the other end portion of the connecting piece is the other one. The hollow panel is fitted into a recess, and the invention according to claim 6 is such that the engaging portion at one end of the hollow panel is a recess and the engaging portion at the other end fits into the recess. The convex portions of one hollow panel are fitted into the concave portions of the other hollow panel.

Further, the formwork system according to claim 7 is
A plurality of hollow panels according to any one of claims 1 to 4 are used to form a flat plate-like dam plate composed of the plurality of hollow panels connected in the extending direction of the ribs. One end of the connection piece is fitted into the opening at the end of the rib of the hollow panel in the extending direction, and the other end of the connection piece is fitted into the opening of the other hollow panel for formwork. It is a feature.

Further, the invention described in claim 8 is a plurality of hollow panels according to any one of claims 1 to 4, or a plurality of flat weir plates according to any one of claims 5 to 7, or Adjacent hollow panels are arranged at right angles by using the hollow panel according to any one of claims 1 to 4 and the flat dam plate according to claims 5 to 7, and the above-mentioned engagement is provided on a side surface orthogonal to each other. One of the connecting portions of the corner panel provided with the connecting portion that engages with the mating portion is engaged with the engaging portion of the one hollow panel, and the other connecting portion is engaged with the engaging portion of the other hollow panel. By combining, a plurality of the above-mentioned hollow panels and / or a weir plate having a flat plate shape constitute a weir plate which is orthogonal to each other.

[0012]

According to the hollow panel of the first aspect, the plurality of ribs are integrally formed between the opposing plate-shaped portions,
A lightweight and desired rigidity is obtained, and since it is possible to connect to the other hollow panel by the engaging portion of the end portion in the direction orthogonal to the extending direction of the rib, it will be described later. Like the formwork system according to items 5 to 8, a long dam plate having a free length can be configured very easily. Therefore, when the hollow panel is integrally formed by extrusion molding of plastic as in the second aspect of the invention, the weight can be further reduced and the handling becomes easier.

In addition, as in the invention described in claim 3,
By filling the space in the hollow panel with a foam, the rigidity of the hollow panel can be further enhanced, and thus the span of the separator to be attached can be made longer to simplify the construction, or the hollow panel itself. It is possible to further reduce the weight by reducing the wall thickness.
Further, according to the invention described in claim 4, when a transparent material is used as the plastic and an opening is formed in one plate-shaped portion, the hollow panel has a large thickness. Alternatively, or when the foam is filled between the plate-like parts as in the invention according to claim 3, the filling of concrete is confirmed by visually observing the back surface of the other plate-like part from the opening. Therefore, it is possible to prevent the occurrence of defective filling points such as jumpers during concrete pouring.

Next, in the formwork system according to any one of claims 5 to 7, a plurality of hollow panels according to any one of claims 1 to 4 are provided in the extending direction of the ribs or the extending direction. By connecting in the direction orthogonal to the existing direction,
Since it is possible to configure a flat weir board, if the hollow panels having a plurality of standard dimensions are created in advance, for example, when used as a weir board for floor slabs of various dimensions, or having a relatively large width dimension. Even when it is used as a weir plate on the side surface of a beam or a pillar, by connecting these several types of hollow panels with standard dimensions, it is possible to freely construct a weir plate that has a desired panel width and length. Is possible.

Further, according to the invention described in claim 8,
A plurality of hollow panels according to any one of claims 1 to 4, a plurality of flat weir plates according to any one of claims 5 to 7, or a hollow panel according to any one of claims 1 to 4. Using the flat weir plate according to any one of claims 5 to 7, a plurality of the hollow panels and / or the flat weir plate are L-shaped, U-shaped, or rectangular-cylindrical in shape. Since the barrier plate can be formed, it can be used as a mold at corners of beams, columns, walls, etc. of various sizes. Here, in the formwork system according to any one of claims 5 to 8, when the connection piece and the corner panel formed of plastic are used, the two hollow panels can be connected in a liquid-tight manner. It is not necessary to insert a face plate or the like in the corners like the ones, and therefore the construction is extremely easy.

[0016]

Embodiment 1 FIGS. 1 to 10 show an embodiment of a hollow panel of the present invention and an example of a formwork system using the same. First, the structure of the hollow panel will be described with reference to FIGS. 1 and 2.
The plate-shaped portion 10a that constitutes the opposing front surface side, the plate-shaped portion 10b that constitutes the back surface side, and the plurality of ribs 10c that connect these plate-shaped portions 10a, 10b ... The rib 10c is integrally formed by extruding a flexible plastic.
Recesses (engagement portions) 11 for connecting to adjacent hollow panels at both ends in a direction orthogonal to the extending direction of
11 is formed. Here, the plate-shaped portion 1 on the back surface side
Circular openings 12 ... Are bored at predetermined positions avoiding the ribs 10c of 0b. Then, the plate-shaped portions 10a and 10b and the rib 10c in which the opening 12 is not formed.
The space defined by and is filled with foamed plastic (foam) 13.

The hollow panel 10 having such a structure has a hollow structure in which the plate-shaped portions 10a, 10b facing each other and a plurality of ribs 10c connecting them are integrally formed by extrusion molding of plastic. Therefore, it is lightweight and easy to handle, and since the foamed plastic 13 is filled in the space inside the hollow panel 10, high rigidity can be obtained. Moreover, since the transparent plastic is used as the plastic forming the hollow panel 10, and the opening 12 is formed in the plate-like portion 10b on the back surface side, the opening 12 is formed during the concrete pouring. From the above, it is possible to confirm the filling of the concrete by visually observing the back surface of the plate-shaped portion 10a that constitutes the front surface side, and thus it is possible to prevent the occurrence of a defective filling portion such as a jumper when placing concrete. it can.

Next, various embodiments of the formwork system using the hollow panel 10 will be described with reference to FIGS. FIG. 3 shows an example in which a plurality of the hollow panels 10 are connected to each other in a direction orthogonal to the extending direction of the ribs 10c to form a wide flat plate-like dam plate, and the length is equal to that of the hollow panels 10. It has dimensions, and the protrusions 1 at both ends in the width direction.
A connecting piece 15 made of plastic or hard synthetic rubber on which 5a and 15b are formed is used, and one convex portion 15a of the connecting piece 15 is fitted into the concave portion 11 of the hollow panel 10 on the one side, and the other The convex portion 15b is fitted in the concave portion 11 of the adjacent hollow panel 10.

At this time, as in the modification shown in FIG. 4, key-like groove portions 16 are formed in the vicinity of the connecting portion of the plate-like portion 10b on the back surface side of the hollow panel 10, and the connecting clip 17 is provided between the groove portions 16. , The hollow panels 10 can be more firmly connected to each other. In addition, like the other modification shown in FIG. 5, the hollow panel 10 is formed at one end with a recess 11 similar to that described above, and at the other end is integrally formed a projection 18 that fits into this recess. If it is molded into, it is possible to connect a plurality of hollow panels 10 by simply fitting the projections 18 into the recesses 11 of the adjacent hollow panels 10 without the need for the connection piece 15. is there.

In FIG. 6, a cone 21 is provided with a pair of wide flat weir plates 20 (opposing sides are omitted) in which a plurality of hollow panels 10 are thus connected in a direction orthogonal to the extending direction of the ribs 10c. It shows an example of a mold used for construction of a wall, etc. assembled by using, for example, a separator (not shown) is interposed between the pair of dam plates 20 to keep the width dimension constant, and Both ends are connected to a cone 21 provided on the plate-like portion 10b on the back surface side of the hollow panel 10 to be tightened and fixed by a metal member 22, and horizontal tightening pipes 23 are laid between the hollow panels 10 to form a foam tie 2
The two weir plates 20, 20 are fastened together by means of 4 ... Then, a wall is constructed by pouring concrete between the dam plates 20 and 20.

At this time, as in the modified example of the connection piece shown in FIG. 7, it has the same length dimension as the hollow panel 10 and the convex portions 35a and 35b are formed at both ends in the width direction, and Hole 35c through which the separator can be inserted in the center
Is formed by using the connecting piece 35, and the one convex portion 3 of the connecting piece 35 is inserted into the concave portion 11 of the one hollow panel 10.
5a is fitted and the other convex portion 35b is fitted in the concave portion 11 of the adjacent hollow panel 10 to form a wide flat dam plate, as shown in FIG. The wide barrier plate 20 of (the opposite side is omitted.) A separator (not shown) is inserted into the hole 35c of the connection piece 35 to keep the width constant, and both ends of each separator are hollow. It becomes possible to connect to the cone 21 located between the panels 10 and 10 and tighten / fix it with a metal object (not shown).

When the hollow panels 10 are connected to each other in the extending direction of the ribs 10c to form a longer flat weir plate, as shown in FIG. 9, one hollow panel 1 is used.
Opening 26 located at the end of the rib 10c of 0 in the extending direction
, One plug portion (one end portion) 27a of the connection piece 27 having the plug portions 27a and 27b formed at both ends, and the other plug portion (the other end portion) 27b of this connection piece 27 is connected to the other. It may be fitted into the opening 26 of the hollow panel 10. At this time, as shown in FIG. 10, the opening 2 of the hollow panel 10 at the uppermost end
If the plug member 28 is fitted to 6 and the opening is closed, the concrete slab will be closed by the opening 26 at the time of placing concrete.
It is preferable since it can be prevented from adhering to the vicinity and the labor of the shaving can be reduced.

As described above, according to the formwork systems shown in the various embodiments, the plurality of hollow panels 10 are connected to each other by using the connection pieces 15 and 27, and the ribs 10c extend in the extending direction or the extending direction. By connecting in a direction orthogonal to the direction, a smooth flat plate-like dam plate 20 and the like can be formed. For this reason, if the hollow panels 10 having a plurality of standard dimensions are prepared in advance, for example, when used as a weir plate for floor slabs or walls having various dimensions, or on the side surface of a beam or a pillar having a relatively large width dimension. Even when it is used as a weir plate, a weir plate having a desired panel width and a smooth surface can be freely formed by connecting these hollow panels having various standard dimensions.

[0024]

[Embodiment 2] FIG. 11 to FIG. 14 use the hollow panel 10 or the dam plate 20 to construct a formwork system in which a plurality of the hollow panels 10 and / or the flat dam plates 20 are orthogonal to each other. An example is shown. As shown in FIGS. 11 and 12, in this formwork system, in order to connect the hollow panels 10 to each other, a substantially rectangular tubular corner panel 30 having a length dimension equal to that of the hollow panels 10 is used. ing. Recesses (engaging portions) 30 similar to the recesses 11 are formed on the side surfaces of the corner panel 30 that are orthogonal to each other and face the end of the hollow panel 10.
a and 30 b are formed, and the above-mentioned connection piece 15 is fitted between the recesses 11 of the one hollow panel 10 arranged at right angles to the one recess 30 a. Then, the other concave portion (engaging portion) 3 of the corner panel 30.
The connection piece 15 is similarly fitted between 0b and the recess 11 of the other hollow panel 10.

Further, on the other orthogonal side surfaces of the corner panel 30, a key-like groove portion similar to the key-like groove portion 16 formed near the connecting portion of the plate-like portion 10b on the back surface side of the hollow panel 10, respectively. 31 are formed, and the above-described connecting clip 17 is inserted between the groove portions 16 of the hollow panel 10 adjacent to each groove portion 31. Then, as shown in FIG. 12, by connecting the hollow panel 10 in the right-angled direction via the corner panel 30 to one end of the hollow panels 10 thus connected in the right-angled direction, A formwork system that is used to construct corners such as beams and walls is formed by forming a U shape as a whole. Further, as shown in FIG. 13, by connecting the hollow panels 10 via the corner panels 30 between the ends of the hollow panels 10 on both sides of the U-shaped formwork system, A formwork system used to construct pillars and beams is formed by forming a prismatic shape as a whole.

In the description of the above embodiment, an example in which the hollow panels 10 are connected at right angles to each other has been described. However, as shown in FIG. 14, a plurality of hollow panels 10 are connected in a flat shape to form a flat plate shape. Forming a weir plate 20 and connecting the weir plates 20 to each other at a right angle to form a form system having a rectangular tube shape as a whole. According to this form system, as described above, By manufacturing hollow panels of several standard sizes in advance and connecting them appropriately, it is possible to freely construct a smooth weir plate having a desired panel width length without performing special processing. Therefore, beams of various sizes can be applied to the construction of columns.

Further, in the above-mentioned embodiments, only the hollow panel 10 made of general plastic has been explained, but the present invention is not limited to this, and for example, fiber reinforced plastic (FRP) or aluminum. Similar effects can be obtained even with a thin and lightweight hollow panel formed by extrusion of an alloy.

[0028]

As described above, according to the hollow panel of the first aspect of the present invention, while being lightweight, desired rigidity can be obtained, and the end portion of the rib in the direction orthogonal to the extending direction thereof can be obtained. Since it is possible to connect to the other hollow panel by the engaging portion, it is extremely easy to form a long dam plate having a free length like the formwork system according to claim 5. Can be configured. Here, when the hollow panel is integrally formed by extrusion molding of plastic as in the invention described in claim 2, the weight can be further reduced and the handling becomes easier. Further, according to the invention described in claim 3, the rigidity of the hollow panel can be further enhanced by the foam, and according to the invention described in claim 4, the back surface of the other plate-like portion is opened from the opening. By visually observing, it is possible to confirm the filling of the concrete, and thus it is possible to prevent the occurrence of defective filling points such as a jumper when placing the concrete.

According to the formwork system of any one of claims 5 to 7, by connecting the plurality of hollow panels in the extending direction of the ribs or in the direction orthogonal to the extending direction, Since a flat weir board can be constructed, if the above hollow panels with multiple standard dimensions are created in advance, special processing is required by connecting these hollow panels with several standard dimensions. Without this, it is possible to freely construct a barrier plate having a desired panel width and a smooth surface. Further, according to the invention of claim 8, a plurality of the hollow panels and / or the plate-like dam plate is orthogonal to each other to form an L-shaped, U-shaped, or rectangular tubular dam plate. Therefore, similarly, it can be used as a mold in corner portions of beams, columns, walls, etc. having various sizes.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of a hollow panel for a mold of the present invention.

FIG. 2 is a cross-sectional view of FIG.

FIG. 3 is a sectional view showing an embodiment of a formwork system using the hollow panel of FIG.

FIG. 4 is a cross-sectional view of a connection portion showing a modified example of FIG.

FIG. 5 is a cross-sectional view of a connection portion showing another modification of FIG.

6 is a perspective view showing an example of a mold using the mold system of FIG.

FIG. 7 is a plan view showing another modified example of FIG.

8 is a perspective view showing an example of a formwork using the formwork system of FIG. 7. FIG.

FIG. 9 is a sectional view of a connecting portion showing another embodiment of the formwork system of the present invention.

FIG. 10 is a cross-sectional view showing an end of the uppermost hollow panel of FIG.

FIG. 11 is a sectional view of a connecting portion showing another embodiment of the formwork system of the present invention.

FIG. 12 is an overall sectional view showing a U-shaped formwork system.

FIG. 13 is an overall cross-sectional view showing a square tubular formwork system.

FIG. 14 is a perspective view showing a rectangular tube-shaped formwork system constituted by a dam plate composed of a plurality of hollow panels.

FIG. 15 is a perspective view showing a conventional form panel.

16 is a plan view showing a conventional formwork system using the formwork panel of FIG. 15. FIG.

[Explanation of symbols]

 10 Hollow panel 10a, 10b Plate-shaped part 10c Rib 11, 30a, 30b Recess (engagement part) 12 Opening 13 Foamed plastic (foam) 15, 27, 35 Connection piece 15a, 15b, 35a, 35b Convex part 18 Convex Part 20 Weir plate 26 Opening 27a, 27b Plug part (end part) 28 Plug member 30 Corner panel

Claims (8)

[Claims] 1. A mold which is formed by integrally molding opposing plate-shaped portions and a plurality of ribs connecting the plate-shaped portions, and which is adjacent to an end portion of the ribs in a direction orthogonal to the extending direction. A formwork hollow panel, characterized in that an engagement portion for connecting to the hollow panel is formed. 2. The hollow panel for a formwork according to claim 1, wherein the plate-shaped portion and the rib are integrally molded of plastic. 3. The formwork hollow panel according to claim 2, wherein a space defined by the plate-shaped portions and ribs on the two opposing surfaces is filled with a foam. 4. The plastic has a light-transmitting property, and one of the plate-shaped portions is provided with an opening for confirming filling of concrete. Hollow panel for formwork according to. 5. The engaging portion is a concave portion, and one end portion of a connecting piece is fitted in the concave portion of the one mold hollow panel, and the other end portion of the connecting piece is another hollow portion for the mold frame. A formwork system comprising a flat weir plate comprising a plurality of formwork hollow panels according to any one of claims 1 to 4 by fitting into a recess of the panel. 6. The mold frame hollow panel according to claim 1, wherein the engaging portion at one end portion is a concave portion, and the engaging portion at the other end portion is a convex portion that fits into the concave portion. A flat plate-like weir made of a plurality of hollow mold panels according to any one of claims 1 to 4, by fitting the convex portion of the hollow panel for molds with the concave portion of another hollow panel for molds. A formwork system characterized by the construction of boards. 7. A plurality of the hollow panel for molds according to any one of claims 1 to 4, wherein a connecting piece is provided in an opening at an end of the rib of one of the hollow panel for molds in the extending direction. By fitting one end portion of the connecting piece and the other end portion of the connecting piece to the opening of the other hollow panel for a mold, thereby forming a plurality of molds connected in the extending direction of the ribs. A formwork system comprising a flat weir board made of hollow panels. 8. A hollow panel for a mold according to any one of claims 1 to 4 and / or claims 5 to 7.
Using the flat weir plate according to any one of the above, the adjacent hollow frames for formwork are arranged in a right angle direction, and a corner provided with a connecting portion that engages with the engaging portion on a side surface orthogonal to each other. Engaging one of the connecting portions of the panel with the engaging portion of the one mold hollow panel, and engaging the other connecting portion with the engaging portion of the other mold hollow panel. Due to
A formwork system comprising a plurality of the above-mentioned formwork hollow panels and / or a flat plate-like weirboard which are orthogonal to each other.