JPH0932163A - Extrusion-molding form building material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To connect a form building material and the concrete of a building excellently by forming at least one or more of arbitrary-shaped recessed sections or projecting sections, in which anchors are installed to recessed strip sections or projecting strip sections. SOLUTION: Cylindrical hollow sections 4 are formed on the underside sides of the projecting strip sections 3 of an extrusion-molding form building material 1. Cylindrical recessed sections 5 are bored to the projecting strip sections 3 so as to be penetrated into the hollow sections 4. The head sections 11 of anchors are inserted into the recessed sections 5. Nuts 13 are loosened, and external cylinders 12 are pulled up to top faces. Consequently, the anchors are engaged into the recessed sections 5 by releasing the energizing of leg sections 14 by an elastic material such as a spring material for engaging the head sections 11 and opening the leg sections 14. Accordingly, peeling due to the insufficient adhesion of placed concrete and the extrusion-molding form building material 1 is prevented while concrete after placing and the form building material 1 can be connected surely.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a formwork building material used when pouring concrete for construction such as a building, which is left as it is after pouring the concrete and is manufactured by extrusion molding used as a surface material. The present invention relates to an extruded mold building material, which has a seat or a hole for attaching an anchor for strengthening the joint between the extruded mold building material and concrete.

[0002]

2. Description of the Related Art As a formwork used for placing concrete, a wooden formwork such as a plywood board is mainly used. However, due to depletion of wood resources and rationalization of concrete placing work in recent years, 2. Description of the Related Art In recent years, a construction method in which an extruded building material containing cement as a main raw material is used as a form material and a surface layer material is used as it is after placing concrete has become widespread.

When an extrusion molding frame building material is used as a surface layer material, in order to improve the bonding between the surface layer material and concrete,
By providing unevenness on the surface where the extrusion molding frame building material and concrete come into contact with each other, the contact surface between the extrusion molding frame building material and concrete is enlarged, and by the engagement of the uneven surface of the extrusion molding frame building material and concrete. Methods have been taken to strengthen the bond. However, depending on the shape of the uneven surface, etc., the poured concrete may not spread to the uneven surface.Therefore, at the time of placing the concrete, the concrete put in by the vibrator is vibrated, and the extruded formwork building material and concrete are We are trying to remove the air bubbles remaining on the interface between the concrete and the extruded formwork building material as well as the contact surface. As a result, since the vibrator is used in the vicinity of the extrusion molding frame building material, the tip portion of the vibrator comes into contact with the extrusion molding frame building material, causing an accident that damages the extrusion molding frame building material.

As a countermeasure against this problem, the applicant of the present invention, in Japanese Unexamined Patent Publication No. 6-173469, inserts a metal or synthetic resin damage preventive material into the concave or convex portion of the extrusion molding frame building material. No. 287828, by contacting the working portion of the vibrator with the extrusion molding frame building material by driving a U-shaped member on the irregular surface of the extrusion molding frame building material by striking the concave portion of the uneven surface and driving it between the convex portions. A method of preventing the above is disclosed. Further, Japanese Patent Application No. 6-23445 discloses a method of arranging a reinforcing bar in a concave portion of an uneven surface of an extrusion molding frame building material, and similarly preventing damage to the extrusion molding frame building material. Although it has an effect of improving the joint between the extrusion molding frame building material and the concrete, the object of these inventions is to prevent the damage of the extrusion molding frame building material, and to further strengthen the joint between the extrusion molding frame building material and the concrete. It was not enough to do it.

[0005]

DISCLOSURE OF THE INVENTION The present invention is aimed at strengthening the joint between an extrusion-molded frame building material having a concave portion and a convex portion and concrete. We will develop extrusion molding building materials for formwork to achieve this.

[0006]

In an extrusion-molded frame building material having at least one surface thereof a groove and a ridge, an anchor is provided on the groove and / or the ridge of the extrusion-molded building material. At least one or more recesses and / or projections of arbitrary shape for attaching the recesses are provided, and the shape of the recesses may be any of groove shape, circular shape, elliptical shape, quadrangular shape, polygonal shape, and the like. The present invention is for punching a recess having an arbitrary shape without limitation. In addition, as the shape of the convex portion,
In addition to a T-shape, a shape similar to this, an object in which a groove is provided on the top of a prism, and the like, it is also conceivable to form the above-mentioned concave portion on the convex portion.

Further, as a second invention, in an extrusion molded frame building material having a concave portion and a convex portion on at least one surface, at least one or more hollow portions are provided in a main body portion of the extrusion molded frame building material. Is provided, and the hollow portion is connected to the recessed portion and / or the recessed portion for projecting an anchor provided in the projected ridge portion of the extrusion molded frame building material. The shape of the standing recess is not particularly limited as in the first invention.

As the anchor used in the present invention, an anchor having an arbitrary shape for engaging with a concave portion and / or a convex portion for attaching an anchor, which is provided on the concave line portion and / or the convex line portion of the extrusion-molded frame building material, is used. An anchor for a building material for extruded molds, which has a stop at any one end of the anchor.

[0009]

[Function] A concave portion and / or a convex portion for attaching an anchor bolt is provided on the concave surface and / or the convex surface of the extrusion molding frame building material having the concave surface and the convex surface,
Or by attaching an anchor bolt to the convex part,
An anchor bolt is fixed in the concrete of the main body of the structure to be cast, which has the effect of further strengthening the bond between the concrete and the extruded mold building material exposed on the surface of the main body.

The mounting recesses and / or projections are
Any one of the ridge portion or the ridge portion of the extrusion molding frame building material,
Alternatively, both may be provided. Further, in the case where the extrusion-molded frame building material is provided with a concave portion having a groove shape, a circular shape, or the like, it is preferable to provide the recessed portion in consideration of the strength of the extrusion-molded frame building material. The shape of the convex portion is not particularly limited as long as the anchor can be attached, but a T-shaped portion, a convex portion having a groove on the head, and the like are preferable.

Further, a hollow portion is provided in the extrusion molding frame building material,
By reducing the weight of the extrusion-molded building material, and connecting the concave portion and the hollow portion provided in the extrusion-molded building material, the bottom surface of the concave portion widens toward the end, and the anchor is attached when the anchor is attached. It is an effective means to prevent falling out.

As the anchor used in the present invention, one having a dovetail-shaped groove at one end for engaging with the extruded formwork building material main body, a T-shaped anchor, and a bolt-shaped anchor. 8, an anchor bolt having a shape in which at least one end portion is made of an elastic material whose leg is opened as shown in FIG. 6, and the leg portion made of the elastic material is biased to be inserted into the outer cylinder portion, or FIG. As shown in Fig. 4, the end part is divided into a few subsections, and the outer cylinder is provided with a space part inside of which the diameter is reduced toward the end part, and the inner cylinder is inserted into the space part to open the end part of the outer cylinder. Anchor bolts are attached to the recesses formed in the extrusion-molded building material by making them legs.

Further, as the shape of the anchor, an extrusion molding die formed into a mountain shape or a coil shape described in JP-A-6-173469, JP-A-5-287828, or Japanese Patent Application No. 6-23445. For metal fittings to prevent frame building material damage,
An anchor may be attached, and it belongs to the technical scope of the present invention. In this case, it is not necessary to provide a concave portion or a convex portion for attaching an anchor particularly on the extrusion molded frame building material main body portion.

[0014]

EXAMPLES The present invention is not limited to the following examples, and any structure having a structure capable of attaching an anchor bolt to an extruded frame building material is included in the technical scope of the present invention.

FIG. 1 is a perspective view of an extrusion molding frame building material according to the present invention in which a hollow portion is provided in a main body of an extrusion molding frame building material, and a hollow portion which penetrates the hollow portion and has a cylindrical shape for attaching an anchor is provided. Yes, width 500 mm, length 3 using extruder
This is a product in which an extrusion molding frame building material having a hollow portion of 500 mm and a thickness of 25 mm is manufactured, punched at a predetermined position after extrusion molding, and provided with a concave portion having a cylindrical shape for an anchor.

According to FIG. 1, 1 is a main body portion of an extruded mold building material, 2 is a concave stripe portion, 3 is a convex stripe portion, and 4 is a convex stripe portion 3 of the extrusion molded frame building material main body portion 1. This is a cylindrical hollow portion provided on the lower surface side, and a cylindrical concave portion 5 is bored in the ridge portion 3 so as to penetrate the hollow portion 4. In the figure, an example in which two concave portions 5 are drilled in each convex stripe portion 3 is described,
The recessed portion 5 to be perforated may be provided at one place in the central part or two places at both ends in a cross shape, but it is preferable to provide two places at both ends in total of four places or more in consideration of stability of mounting, etc.
The location and the number of the recessed portions 5 to be punched are advantageous in that the protrusions 3 are provided as shown in FIG. 1 for cutting in accordance with the working condition, but may be appropriately determined depending on the cost and the working condition. .

As a method of attaching the anchor, for example, the head portion 11 as the anchoring portion of the anchor shown in FIG. 6 is inserted into the concave portion 5, and the nut 13 fixing the outer cylindrical portion 12 at the terminal end side of the anchor is loosened. By pulling up the outer cylinder 12 to the upper surface, the bias of the leg portion 14 made of an elastic material such as a spring material for locking the anchor head 1 is released, and the anchor is locked in the recess 5 by opening the leg. It is a thing.

FIG. 2 shows a projecting ridge 3 of the extrusion molding frame building material main body 1 provided with a dovetail-shaped recess 5 longitudinally crossing the projecting ridge 3. For example, FIG. By inserting the head of the anchor having a T-shaped head shown in 9 into the recess 5 and rotating it by 90 degrees, it is possible to prevent the T-shaped part of the anchor head from obstructing and dropping the anchor from the groove. . The recessed portion 5 to be provided does not need to be longitudinally cut through the ridge portion 3, but it is possible to provide the recessed portion at the same time when the extrusion molded frame building material is manufactured, if it is longitudinally cut in the manufacturing process.
It is advantageous in the manufacturing process. In addition to the above, as the shape of the concave portion, any shape such as the elliptical shape in FIG. 3, the rectangular shape in FIG. 4 and the polygonal shape not shown has the same effect.

As the anchor to be inserted into the recess, a bolt-shaped anchor is provided outside the object shown in FIGS. 6 to 9, an anchor having a triangular slip-out preventing member made of an elastic material such as rubber at the anchor insertion part, and the anchor. There are those having a locking member that rotates at the end of the anchor, and the same effect as an anchor is obtained.

FIG. 5 shows a case in which a convex portion 5 for anchor anchoring is formed on the concave streak portion 2, and as an example of the shape of the convex portion 5, a T-shaped continuous convex portion 5 is provided. In Although,
The projections 5 are not limited to the continuous projections 5 as shown in the figure, and discontinuous projections 5 may be provided, but continuous projections 5 are preferred. As the shape of the anchor used for this, as shown in FIG.
It has a dovetail-shaped groove portion that can be attached to the convex portion 5. Further, although FIG. 5 shows a diagram in which the convex stripes 2 are provided on the main body 1, the convex stripes 3 may be provided.
Further, the shape of the convex portion provided on the convex streak portion 2 or the concave streak portion 3 is not limited to the above T-shape, and for example, the convex portion 5 may be provided with a groove having the shape shown in FIG. The shape of the concave portion for attaching the anchor provided in the portion and the convex portion is not particularly limited.

[0021]

EFFECTS OF THE INVENTION By using the extrusion molding frame building material and the anchor of the present invention, it is possible to more reliably bond the extrusion molding frame building material and the concrete for building to be cast, and the casting concrete and the extrusion mold It is possible to prevent peeling due to insufficient adhesion of the frame building material. Furthermore, by using in combination with the metal fittings for which the applicant has applied for damage prevention earlier, it is possible to prevent damage to the extrusion mold material when placing concrete,
It is possible to more reliably bond the concrete after the placing and the extruded mold building material.

[Brief description of drawings]

FIG. 1 is a perspective view of an extrusion-molding building material in which a hollow portion is provided in an extrusion-molding building material main body portion and a cylindrical concave portion for attaching an anchor which penetrates the hollow portion is provided.

2A and 2B are a plan view and a partial side view when a groove-shaped concave portion is provided in a convex portion of an extrusion molding frame building material.

3A and 3B are a plan view and a side partial view of an extrusion molding frame building material in which a hollow portion is provided in the extrusion molding frame building material main body portion and an oval recess for anchor attachment is provided which penetrates the hollow portion.

4A and 4B are a plan view and a partial side view of an extrusion molded frame building material in which a hollow portion is provided in an extrusion molded frame building material main body portion and a recessed portion formed by a quadrangle for anchor attachment which penetrates the hollow portion is provided.

5A and 5B are a plan view and a partial side view of an extrusion molding frame building material in which a hollow portion is provided in the extrusion molding frame building material main body and a T-shaped convex portion is provided in a concave upper portion.

FIG. 6 is a cross-sectional view of the anchor with the head open when the leg is stored in the outer cylinder before use and when the leg is opened during use.

FIG. 7 is a cross-sectional view of an anchor in which the legs of the head are made of an elastic material and have protrusions at the ends of the legs to prevent slipping out.

FIG. 8 is a cross-sectional view and a side view thereof before and during use of an anchor having a shape in which an outer cylinder head is divided into a plurality of portions.

FIG. 9 is a cross-sectional view of an anchor having a T-shaped head.

FIG. 10 is a cross-sectional view of an anchor having a dovetail-shaped head and a partial cross-sectional view at the time of use.

FIG. 11 is a cross-sectional view of an anchor having a locking portion that locks between a ridge portion and a ridge portion of an extruded building material having a recessed portion and a ridge portion, and a cross section when the anchor is set in the extruded building material.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Extruded formwork building material 5 Concave or convex part for anchor attachment 2 Concave part 3 Convex part 4 Hollow part 11 Anchor head 14 Leg part 12 Outer cylinder 15 Inner cylinder 13 Nut

Claims (5)

[Claims] 1. An extrusion-molded frame building material having a grooved portion and a ridged portion on at least one surface, which has an arbitrary shape for attaching an anchor to the grooved portion and / or the ridged portion of the extrusion-molded frame building material. An extrusion molding frame building material, characterized in that at least one or more recesses and / or projections are provided. 2. The extruded mold building material according to claim 1, wherein the recess having an arbitrary shape to which the anchor according to claim 1 is attached has a groove shape. 3. An extrusion molding frame building material, wherein a cross-sectional shape of a recess having an arbitrary shape to which the anchor according to claim 1 is attached is any one of a circle, an ellipse, a quadrangle, and a polygon. 4. An extrusion molded frame building material having a concave portion and a convex portion on at least one surface, wherein the extrusion molded frame building material is provided with at least one hollow portion, and the hollow portion and the hollow portion are provided. An extrusion molding frame building material, characterized in that it is connected to a recess for anchor attachment provided in a concave line portion and / or a convex line portion of the extrusion molding frame building material. 5. The recessed section and / or the projected section of the extrusion-molded frame building material according to claim 1, or the recess for anchor attachment provided in the recessed section and / or the projected section. And / or an anchor for a building material for extrusion molding, characterized in that a locking portion having an arbitrary shape that locks to the convex portion is provided at either end of the anchor.