JPH09273253A - Joint member for concrete frame - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a joint member which enables inner and outer finish and reinforcement for a building by the use of a concrete frame made of polystyrene foam. SOLUTION: When concrete frames 1 are arranged adjacent, joint members 5, 6 are constituted as a horizontal joint member 5 arranged in a clearance between mutual horizontal ends H of panels 2 and 3 or a vertical joint member 6 arranged in a clearance between mutual vertical ends V of the panels. The joint members 5, 6 are made of polystyrene foam having high density, are provided with a projection streak 10, a streak groove 9, and a recessed and projection shape 12, and are engaged with an end of the panel. After concrete is placed, metallic material, nail, and screw can be applied for the joint members 5 and 6. The joint members 5, 6 are used closely or apart in required sections as required to reinforce the concrete frame 1 itself at the same time.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a novel joint member used when assembling a plurality of molds used for constructing a concrete structure prior to pouring concrete.

[0002]

2. Description of the Related Art A concrete mold made of a resin material in place of a wooden frame used to construct a concrete structure, for example, a concrete foundation for building a house or a concrete wall. It has been proposed in the past to use a frame. It typically consists of two rectangular panels spaced apart from each other in parallel and a web member connecting the panels. A resin material that can function as a heat insulating material is used for the panel, and a web made of a metal and a resin of the same or different quality as the panel is used as the web. A plurality of such molds are assembled to form a desired foundation or wall, and then concrete is poured into the internal space between the panels. The structure thus obtained can be used as it is, as a foundation or as a concrete wall of a building, without the need for removing the crate as in the past, without the need for additional insulation. .

When constructing a building such as a house using the concrete form made of the resin material as described above, it is necessary to provide an exterior and an interior to the concrete wall obtained. However, since this mold is generally made of expanded polystyrene, it is difficult to finish it by a dry method. That is, it is not possible to attach building hardware to such a formwork, and since nails and screws do not work, it is not possible to directly construct fireproof building materials such as siding. It was also difficult to attach small items to the wall.
Therefore, for example, the outer surface of the resin mold frame is provided with irregularities, and mortar is applied and spray-painted on it, finishing by a wet method is performed, or outer wall finishing such as sticking tiles with an adhesive is performed, The finishing methods are very limited. Therefore, in reality, the advantages of the resin concrete formwork, which can function as both the formwork and the heat insulating material, have not been fully utilized.

A concrete formwork wall proposed in Japanese Patent Laid-Open No. 6-346536 has been proposed as a solution to such a problem. This formwork is composed of two foam material panels arranged facing each other with a gap and a bridging member connecting these panels like the conventional one, and each bridging member is a panel. Is provided with an elongated end plate which is preferably exposed flush with the outer surface, and the end plates are connected by a web. The bridging member is made of a plastic material such as high-density polyethylene, and the end plate is exposed on the outer surface of the panel, so that the interior material or the exterior material can be fixed thereto with screws or the like.

[0005]

However, in the concrete formwork disclosed in Japanese Unexamined Patent Publication No. 6-346536 mentioned above, the end plates capable of stopping the screws are present only in the vertical direction of the panel. The places where nails and screws can be used are limited. Also,
The end plates are always provided with the formwork, corresponding to the number of webs. Therefore, even if the interior or exterior is not required, it cannot be omitted, and there is a cost disadvantage. The present invention aims to solve these problems.

[0006]

According to the present invention, when assembling a plurality of concrete formwork consisting of two rectangular panels spaced apart from each other and arranged in parallel and a web member connecting these panels. , It is proposed to use new joint members. This joint member
The concrete formwork is arranged adjacent to each other so that the concrete formwork is arranged in the gap between the facing panel end portions, and is made of a material harder than the panel. The facing panel edge may be the horizontal edge or the vertical edge of the panel.

The joint member is harder than the panel, and is sufficient to enable the engagement of nails and screws and the attachment of construction hardware. That is, when nails, screws, etc. are driven into the joint member, they must be able to hold them. More practically, it is desirable that the holding force is such that it can lock an arbitrarily selected finishing material attached to the outside of the concrete formwork.

As described above, by using the hard joint members arranged in the gaps between the facing panel end portions, the concrete formwork is assembled and the concrete is poured and hardened, and then nails, screws or the like are used. It is possible to attach and install finishing materials using. That is, such a joint member generally has a role of a base called in construction, enables to start finishing of interior and exterior immediately after hardening of concrete, and contributes to facilitation of construction and shortening of construction period.

Since the joint member according to the present invention is not integral with the form frame unlike the end panel proposed in the above-mentioned Japanese Patent Laid-Open No. 6-346536, it is made of conventional expanded polystyrene that does not include the end panel. It can be applied to any concrete formwork. Further, by selecting the shape configuration of the joint member according to the need and the application, it can be used regardless of the size and shape of the building hardware, nails and screws. Furthermore, since it is possible to set dense areas where necessary and sparse areas where they are not necessary, it is possible to avoid the uneconomical situation of having to use even unnecessary areas.

In principle, the joint member of the present invention may be made of any material as long as it satisfies the condition of hardness, but is preferably the same as or different from the panel used with it, but a harder resin. Made of material. The resin material is preferable because it does not impair the original characteristics of the concrete formwork. That is, for example, a metal joint has a problem of rusting, and a wooden joint may cause deterioration of durability due to corrosion and expansion / contraction. More preferably, the joint member is made of the same resin material as the panel, for example, expanded polystyrene. The joint member can be manufactured by various known pressure molding methods such as extrusion molding and injection molding. Further, the resin may include various known additives such as a reinforcing agent, if necessary.
Fillers, flame retardants, colorants, antioxidants, etc. can be added.

The joint member of the present invention has, for example, substantially the same thickness as a panel, and has a contour shape that almost completely fills a horizontal or vertical gap between panel ends of adjacently arranged molds. Have. That is, the surface of the joint member facing the panel end portion preferably has a surface shape complementary to the surface shape of the facing panel end portion and extends over the entire gap. As a result, the formwork assembled by using the joint member can be handled in the same manner as the portion not including the joint member, and the entire frame can be handled as a substantially flush wall surface when finishing the interior and exterior.

Advantageously, the joint member has a contoured shape which is engageable with the panel. Thus, when the joint member is arranged between the panel end portions, both of them can be temporarily locked. Then, when concrete is poured, both are permanently fixed. Such engageable contour shapes include, for example, providing the joint member with a flange portion that engages the inner surface of the panel, and optionally with a pointed portion that is penetrated into the panel material.

Further, by enabling such temporary locking, the joint member of the present invention also serves as reinforcement of the concrete formwork itself. That is, in the conventional construction method in which only concrete formwork is stacked, strict precautions must be taken when placing it in order to prevent swelling and misalignment of the formwork due to concrete lateral pressure applied to the formwork during concrete placement. Was needed. By using the joint member of the present invention that engages with the panel of the mold, the bulge of the mold itself at the time of casting can be reduced, and the reduction of misalignment can be greatly improved. From this point of view, for example, it is possible to bridge the two ends of two joints arranged at the horizontal ends of the two panels of the formwork with each other to form an integrated shape. .

The panel is a panel having protrusions and / or recesses at horizontal and / or vertical ends, and the joint member has recesses and / or recesses that engage these protrusions and / or recesses.
Alternatively, when the projection is provided, the above engagement can be easily and surely obtained. Preferably, the convex portion is a ridge and the concave portion is a groove. A formwork consisting of a panel having such a protrusion and a groove is described in PCT / NZ94 / 00128 (Japanese Patent Application No. 7-51).
3147).

Further, the joint member of the present invention can be provided not only with the end portion of the panel but also with a convex portion and / or a concave portion capable of engaging with each other between the joint members. In such a case, good locking can be obtained even between the joint members arranged so that their ends are in contact with each other, and the stability of the form itself can be further enhanced when pouring concrete. The number of joint members arranged between the panel end portions is not limited to one, and two or more joint members may be used side by side or stacked in some cases.

In order to improve the familiarity with the cast concrete, the inner surface of the joint member, that is, the surface facing the space between the two panels when arranged between the panel ends, Can be configured as a non-smooth surface. This consists, for example, of providing the inner surface with suitable irregularities, which eliminates the problem of concrete peeling after solidification.

[0017]

1 illustrates an exemplary embodiment of a joint member according to the present invention, also with an exemplary concrete formwork. In FIG. 1, reference numeral 1 denotes a concrete formwork, which comprises two rectangular panels 2 and 3 which are spaced apart from each other and arranged in parallel, and two web members 4 which connect these panels to each other. The two are shown as being placed next to each other. This concrete formwork 1
It is similar to that disclosed in PCT / NZ94 / 00128 (Japanese Patent Application No. 7-513147), wherein panels 2 and 3 are made of expanded polystyrene and web member 4 is made of metal. However, the joint member of the present invention is not limited to such concrete formwork, and as shown in FIG. 2, two horizontally long rectangular panels 2 and 3 arranged facing each other and eight webs connecting these panels. Used for any existing resin concrete formwork, including formwork consisting of the member 4 and further formwork in which the web member 4 is integrally molded from the same material as the panels 2 and 3. be able to.

FIG. 1 shows a horizontal joint member 5 as a joint member, which is suitable for being arranged in a gap between horizontal end portions H of panels when concrete formwork 1 is vertically stacked and adjacently arranged. , A vertical joint member 6 suitable for being arranged in the gap between the vertical ends V of the panel. These are made of a harder material than the panels 2 and 3. For panels 2 and 3 made of expanded polystyrene, for example, joint members 5 and 6 can be made of high density expanded polystyrene.

Each of the joint members 5 and 6 has substantially the same thickness as that of the panels 2 and 3 and has a contour shape that almost completely fills the gap. It can be engaged. That is, the panels 2 and 3 respectively have the ridges 7 and the grooves 8 at the upper and lower horizontal ends H, but the horizontal joint member 5 has the corresponding grooves 9 and the ridges 10. FIGS. 3 to 5 show a state in which the groove 9 of the horizontal joint member 5 is fitted to the ridge 7. On top of this, the concrete formwork 1
When the groove 8 is arranged so as to fit in the ridge 10, the gap between the horizontal ends H of the facing panels between the two vertically adjacent concrete forms 1 is set to the horizontal joint member. Filled completely with 5.

Further, the vertical joint member 6 is provided with a flange portion 11 which engages with the inner surfaces of the panels 2 and 3, and is further provided with an uneven shape 12 which is engageable with the vertical end portion V of the panel.
Then, as shown in FIGS. 3 and 4, the gap between the vertical ends V of the facing panels between the two concrete forms 1 horizontally adjacent to each other is completely prevented by the vertical joint member 6. Will be filled. As is apparent from FIG. 5, the outer surfaces of the joint members 5 and 6 in this case are completely flush with the outer surfaces of the panels 2 and 3. Since these joint members 5 and 6 are made of a hard material, building hardware, nails, screws, etc. are applied to the place where the joint member is arranged as desired, and after the concrete is placed, the interior material and Finishing construction can be performed using exterior materials.

The vertical joint member 6 is formed with a convex portion 13 and a concave portion 14 at each end. As a result, the vertical joint member 6 can be connected by associating the end portions of the concavities and convexities, and the convex portion 13 can be fitted into the groove 9 of the horizontal joint member 5 or the groove 8 of the panels 2 and 3. it can. Similarly, the recess 14 can be fitted to the ridge 10 of the horizontal joint member 5 and the ridge 7 of the panels 2 and 3. Both ends of the horizontal joint member 5 can also be provided with similar convex portions and concave portions.

The inner surface 15 of the horizontal joint member 5, which faces inward when arranged between the panels, is designed as a non-smooth surface. That is, the inner surface 15 is formed with some irregularly-shaped protrusions 16 to make the inner surface 15 as a whole non-smooth. This helps solve the problem of delamination from the cast concrete.

FIG. 6 shows another embodiment of the joint member. In this embodiment, the horizontal joint member 5 ′ has a plurality of staggered protrusions 17 and recesses 18 on the upper surface, instead of the protrusions 10 and the grooves 9 shown in FIGS. 1 to 5. ing. The lower surface of the horizontal joint member 5'is provided with recesses and projections having a shape complementary to the projections 17 and the recesses 18. Such a horizontal joint member 5'can be used when the upper and lower horizontal end portions of the panels 2 and 3 of the concrete formwork 1 are intended to be assembled with shapes corresponding to them. .

FIG. 7 shows another embodiment of the joint member. In this case, the horizontal joint member 5 ″ has a plurality of projections 19 connected in series on the upper surface, and has a concave portion for receiving these projections on the lower surface.

FIG. 8 shows another embodiment of the joint member. In this example, two horizontal joint members 5 shown in FIG. 1 to FIG. 5 are integrally connected to each other by a bridging portion 20 made of the same material between facing both ends. There is. In such an example, the reinforcement of the concrete formwork at the time of pouring concrete can be further strengthened. Such an embodiment is advantageous when used in a concrete formwork in which the web member 4 is integrally molded of the same material as the panels 2 and 3 and the strength of the web member 4 is not sufficient. FIG. 9 is an end view seen from one end.

The joint member of the present invention is used, for example, when assembling a plurality of concrete forms as shown in FIG. 1 for constructing a concrete wall of a house. In this case, at the place where it is necessary to use building hardware or drive nails or screws for finishing, or where it is considered necessary to reinforce the formwork, the confronting concrete formwork faces should be face-to-face. The joint member of the present invention is disposed in the gap between the horizontal ends and / or the vertical ends of the panel to be mounted. This is done, for example, by arranging the joint members all or part between the horizontal ends, all or part between the vertical ends, or both. After that, concrete is poured and a desired concrete wall is constructed. It is also possible to use a plurality of joint members between the ends of the panel.

[0027]

As described above, according to the present invention, there is provided a joint member which can be freely arranged only at a required place when a building is constructed using a concrete form made of expanded polystyrene or the like. To be done. This joint member has sufficient hardness to withstand the placement of building hardware, nails, screws, etc., so that interior and exterior can be performed as desired. Also, by forming the joint member from the same material as the panel of the concrete formwork, problems associated with shrinkage and corrosion can be solved. Furthermore, such a joint member also contributes to the reinforcement of the form itself.

[Brief description of drawings]

1 is an exploded perspective view of an exemplary embodiment of a joint member according to the present invention, also with an exemplary concrete formwork.

FIG. 2 is an exploded perspective view showing an embodiment of the joint member of the present invention when another exemplary concrete form is used.

FIG. 3 is a perspective view showing a state where the joint member and the concrete formwork of FIG. 1 are assembled.

FIG. 4 is a front view of FIG. 3 viewed from the side of one panel.

5 is an end view of FIG. 3 viewed from one end. FIG.

FIG. 6 is a partial perspective view of another exemplary embodiment of a joint member according to the present invention.

FIG. 7 is a partial perspective view of another exemplary embodiment of a joint member according to the present invention.

FIG. 8 is a perspective view similar to FIG. 3, showing yet another exemplary embodiment of a joint member according to the present invention, also with an exemplary concrete formwork.

9 is an end view showing the structure of FIG. 8 viewed from one end.

[Explanation of symbols]

 1 Concrete formwork 2, 3 panel 4 Web member 5 Horizontal joint member 6 Vertical joint member 7, 10 Projected ridges 8, 9 Groove 11 Flange 12 Concavo-convex shape 13, 17 Convex portion 14, 18 Recessed portion 15 Inner surface 16 Protruded portion 19 Projection 20 Bridge part H Horizontal end V Vertical end

Claims (10)

[Claims] 1. A joint member used when assembling a plurality of concrete formwork, each of which comprises two rectangular panels which are spaced apart from each other and arranged in parallel, and a web member which connects these panels, A concrete mold, characterized in that it is arranged in a gap between horizontal ends or vertical ends of the panels facing each other by arranging molds adjacent to each other, and is made of a material harder than the panels. Frame joint member. 2. The joint member according to claim 1, which is made of a harder resin material which is the same as or different from the panel. 3. The joint member of claim 2, wherein the material is expanded polystyrene. 4. The joint member according to claim 1, wherein the joint member has substantially the same thickness as the panel and has a contour shape that almost completely fills the gap. 5. The joint member according to claim 1, having a contour shape capable of engaging with the panel. 6. The panel is a panel having a convex portion and / or a concave portion at a horizontal end portion and / or a vertical end portion, and the joint member has a concave portion and / or a convex portion engaging with the convex portion and / or the concave portion. The joint member of claim 5, comprising a portion. 7. The joint member according to claim 6, wherein the convex portion is a ridge and the concave portion is a groove. 8. The joint member according to claim 1, wherein the end portion is provided with a convex portion and / or a concave portion that enables engagement between the joint members. 9. The joint member according to claim 1, wherein the surface facing inward when arranged is a non-smooth surface. 10. A joint member comprising a pair of joint members according to any one of claims 1 to 9 and integrally bridging between both ends facing each other.