JPH0538189U - Concrete formwork - Google Patents

Abstract

(57) [Summary] [Object] An object of the present invention is to provide a concrete profile in which the strength of the covering portion that covers the edge surface of the plate material is increased and the durability of the metal pier is improved. A plate member 11 made of plywood having an edge surface 11c inclined outward from one surface to the other surface,
A metal splint 12 is arranged along the edge surface of the plate material. The metal splint is connected to a fixing portion 13 which is fixed to the plate material by abutting on one surface of the plate material, and another metal splint. A connecting portion 14 and an edge covering portion 15 that covers the edge surface of the plate material,
In addition, the edge covering portion has a triangular cross section in which the inner side surface that covers the edge surface of the plate material forms an inclined surface along the edge surface, and the outer surface that faces the inner surface has a surface that is in a direction perpendicular to the surface of the plate material. Characterized by eggplant.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a formwork used for placing concrete.

[0002]

[Prior Art]

 In order to construct a concrete structure, the formwork is combined so as to form a space corresponding to the shape of the concrete structure, and fresh concrete is poured into the space surrounded by the formwork to be cured. ing.

In the formwork that forms the space for pouring concrete in this way, a rectangular plate material made of wood plywood and a metal splint that is arranged at the four edges of the plate material and fixed to the plate material are used. 4 and FIG. 5 are examples of forms of this type.

In the figure, 1 is a rectangular plate made of wood plywood, 2 is a metal spar made of, for example, aluminum or an alloy thereof, which is fixed to the plate 1 at the edges of the plate, for example, four edges. . The metal splint 2 has a fixing portion 3, a connecting portion 4 and an edge covering portion 5 which are integrally formed. The fixing portion 3 contacts one surface of the plate material 1 and is attached to the plate material 1 by a bolt (not shown). The connecting portion 4 projects in a direction perpendicular to one surface of the plate material 1, and the edge cover portion 5 covers the edge surface of the plate material 1. In the edge covering portion 5, an inner side surface 5a covering the edge surface of the plate material 1 is along a direction perpendicular to the surface of the plate material 1, and an outer side surface 5b facing the inner side surface 5a is parallel to the inner side surface 5a. ing.

This formwork is placed upright. The same formwork is arranged side by side on the left and right sides of the formwork, and the connecting portions 4 of the metal stiles 2 located on the left and right sides of the plate member 1 are connected to the connecting portions 4 of the metal stiles 2 of other adjacent formwork and bolts not shown. Are connected via. The formwork connections are arranged in the same way with respect to the formwork connections, with the thickness of the concrete structure being separated. Then, ready-mixed concrete is poured into the space surrounded by each formwork.

[0006]

[Problems to be solved by the device]

 This type of formwork has the following problems.

The edge covering portion 5 of the metal splint 2 used for the formwork of this type presses the edge surface of the plate material 1 with its inner side surface 5a and prevents the edge surface of the plate material 1 from colliding with other items and being damaged. Prevent. That is, the edge surface of the plate material 1 often collides with another object when handling the plate material 1. The edge surface of the plate material 1 made of plywood is fragile and is easily damaged by collision with an external object. If the edge surface of the plate material 1 is damaged, fresh concrete will enter the damaged portion of the edge surface of the plate material 1 when pouring the concrete and disturbed streaks on the surface of the concrete structure, which is not preferable. Therefore, the edge covering portion 5 of the metal pier 2 covers the edge surface of the plate material 1, and the edge covering portion 5 prevents the edge surface of the plate material 1 from directly colliding with other external objects.

However, since the pressing portion 5 of the metal splint 2 collides directly with another object instead of the edge surface of the plate material 1, the collision causes the pressing portion 5 to face inward or outward as shown by a phantom line in FIG. May be deformed. When the edge coverings 5 are deformed inward, if the metal splints 2 of adjacent molds are brought into contact with each other, a large gap is generated between the edge coverings 5 of the respective metal splints 2 and concrete pouring is performed. Sometimes, fresh concrete penetrates into this gap and undesirably forms protrusions on the surface of the concrete structure. When the edge covering portion 5 is deformed inward, the connecting portions 4 of the metal stiles 2 of the adjacent molds cannot come into contact with each other. Then, it is conceivable to correct the deformed edge covering portion 5 so that it comes to the original position, but in this case, the holding portion 5 is broken from the root.

As described above, the conventional metal splint 2 has a low durability as a whole because the edge covering portion 5 has a small strength.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a concrete mold member in which the strength of the cover portion that covers the edge surface of the plate member is increased and the durability of the metal pier is improved.

[0011]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the concrete profile of the present invention is made of plywood, and has a plate material having an edge surface inclined from one surface to the other surface toward the outside, and a metal material arranged along the edge of the plate material. The metal pier includes a fixing portion that abuts on one surface of the plate material and is fixed to the plate material, a connecting portion that is connected to another metal pier, and a cover portion that covers the edge surface. And a metal splint having, wherein the edge cover portion has an inner side surface that covers the edge surface of the plate material and an outer side surface that faces the inner side surface, and the inner side surface forms an inclined surface that extends along the edge surface. It is characterized in that the outer surface is a surface extending in a direction perpendicular to the surface of the plate material.

[0012]

[Action]

 The edge covering portion of the metal pier has a triangular cross section in which the width of the base portion increases and the width decreases toward the tip due to the combination of the inclined inner side surface and the outer side surface. Therefore, the edge cover is formed on the metal sash with extremely high strength, and even if it collides with another object, it can be deformed to the plate side (inside) or the opposite side (outside) around the base. Almost none. Therefore, it is possible to prevent the occurrence of a situation such as defective concrete placing or unusable metal pier due to deformation of the edge cover. As a result, this mold material has high durability and can be used repeatedly many times.

[0013]

【Example】

 An embodiment of the present invention will be described with reference to FIGS.

In this embodiment, a metal beam, which is the object of the present invention, is provided at the edge of the rectangular plate material along the length direction.

In the figure, reference numeral 11 denotes a rectangular plate material, and the plate material 11 is formed by laminating and bonding wood and synthetic resin. The width dimension of the other surface 11b is larger than the width dimension of the one surface 11a of the plate material, and the edge surfaces 11c of the pair of edge portions along the length direction of the plate material 1 include the one surface 11a to the other surface. It is formed as an inclined surface that is inclined toward 11b toward the outside.

In the figure, reference numeral 12 denotes a pair of metal bars that are respectively arranged at a pair of edges along the length direction of the plate member 11. The metal bars 12 are made of, for example, an aluminum alloy, and are formed by an extrusion molding method. It was cut to a length of 11.

As shown in FIGS. 2 and 3, the metal pier 12 is integrally formed with a fixing portion 13, a connecting portion 14, and an edge covering portion 15. These portions are provided over the entire length of the metal pier 12. It is formed by stretching. The fixing portion 13 is in the form of a strip that abuts a portion of the one surface 11 a of the plate material 11 close to the edge surface 11 c over the entire length of the plate material 11, and as shown in FIG. It is fixed to the plate 11 by inserting it. The connecting portion 14 projects from the base portion of the fixing portion 13 along a direction perpendicular to the surface 11 a of the plate material 11 and is in the form of a strip extending over the entire length direction of the plate material 11. As will be described later, the connecting portion 14 is formed with a hole 17 through which a bolt for connecting to a metal frame of another form is inserted.

The edge cover portion 15 covers the edge surface 11 c of the plate material 11 from the outside by projecting from the base of the fixed portion 13 toward the other surface 11 b of the plate material 11 in a rectangular direction. Has a strip shape extending over the entire length of the. The edge covering portion 15 has an inner side surface 15a that comes into contact with and covers the edge surface 11c of the plate member 11 and an outer side surface 15b that faces the inner side surface 15a. The inner side surface 15a forms a surface inclined along the inclined edge surface 11c of the plate material 11. The outer side surface 15b is a surface perpendicular to the surface 11a of the plate material 11. For this reason, the inner surface 15a and the outer surface 15b of the edge covering portion 15 intersect to form a triangular cross section.

That is, the base of the edge covering portion 15 (the surface 11a side of the plate material 11, the bottom of the triangle) has a large width between the inner side 15a and the outer side surface 15b, and the tip of the edge covering portion 15 (the triangular top point). ), The inner side 15a and the outer side surface 15b sequentially approach each other, and the width between the two gradually decreases, and the inner side 15a and the outer side surface 15b intersect at the tip of the edge covering portion 15. The edge cover 15 is formed in a triangular shape in cross section so that the base thereof is the base in order to increase the strength of the base of the edge cover 15 and prevent deformation.

The width between the inner side 15a and the outer side surface 15b at the base of the edge covering portion 15 is larger than that of the conventional one, and has a size that gives the edge covering portion 15 sufficient strength. The tip of the edge covering portion 15 is set so as to come to the same position as the surface 11b of the plate material 11 or to a position protruding slightly outside the surface 11b.

A wooden stile 18 is arranged at each of the pair of edge portions along the width direction of the plate material 11 and located on the surface 11 a of the plate material 11. The wooden splint 18 has the same length as the width of the plate material 11, and is fixed to the plate material 11 and connected to the metal splint 12.

Further, on the surface 11 a of the plate member 11, an intermediate metal splint 19 is arranged along the length direction. The intermediate metal splint 19 has an I-shaped cross section, and is fixed to the plate member 11 with screws 20. Further, the intermediate metal pier 19 is connected to the wooden pier 18.

When the template thus constructed is used for constructing a concrete structure, the template is placed upright so that the longitudinal direction is along the vertical direction. In this case, the orientation of the formwork is set so that the surface 11b of the plate member 11 faces the concrete structure. The required number of molds are set up side by side, and the metal stiles 12 provided on a pair of edges in the length direction of the plate members 11 of adjacent molds are connected to each other.

That is, the connecting portions 14 of the metal stiles 12 of adjacent molds are brought into contact with each other, the bolts 21 are passed through the holes 17 formed in the connecting portions 14, and the nuts 22 are screwed into the bolts 21. In this case, the outer surfaces 15b of the edge covering portions 15 of the metal stiles 12 provided on the adjacent molds come into contact with each other. In addition, a flap material (not shown) is commonly attached to the connecting portion 14 of the metal beam 12 of each mold. The formwork connections are arranged in the same manner with respect to the formwork connections, with the thickness of the concrete structure being separated. Each facing formwork is connected by a member not shown.

Then, the fresh concrete C is poured into the space surrounded by the plate material 11 in each formwork to pour the concrete.

The formwork in this embodiment has the following effects.

The edge cover portion 15 of the metal pier 12 presses the edge surface 11c of the plate material 11 with its inner side surface 15a to prevent the edge surface 11c of the plate material 11 from colliding with other items and being damaged. .

The edge covering portion 15 of the metal splint 12 has a triangular shape in which the width of the base portion is thicker and the width thereof is accordingly narrower toward the tip, and therefore the strength of the base portion is increased and is less likely to be deformed. . Therefore, the edge covering portion 15 is formed on the metal splint 12 with extremely high strength. Therefore, even if the edge cover 15 collides with another object, the edge cover 15 is hardly deformed to the plate material 11 side (inner side) or the opposite side (outer side) around the base. Therefore, it is possible to prevent the occurrence of a situation such as defective concrete placement due to the deformation of the edge covering portion 15 and the unusable metal pier 12.

In this way, the durability of the metal splint 12 is improved as compared with the conventional metal splint. As a result, this formwork has high durability and can be used repeatedly many times compared to the conventional formwork.

In addition, since the tip (on the surface 11b side of the plate material 11) of the edge covering portion 15 of the metal splint 12 is a triangular vertex, as shown in FIG. When it comes into contact with the edge covering portion 15, a part where the tips of the edge covering portions 15 are combined becomes a thin line. Therefore, the portion where the ends of the edge covering portions 15 are combined forms only a thin line on the surface of the concrete structure, and the influence on the accuracy or aesthetics of the surface of the concrete structure is very small.

It should be noted that the present invention is not limited to the above-described embodiments, and various modifications can be carried out.

For example, not only the metal splints may be arranged at the edges along the length direction of the plate member 11, but the metal splints may be arranged at the edges along the width direction.

[0033]

[Effect of the device]

 As described above, according to the present invention, the strength is increased by forming the edge covering portion that covers the edge surface of the plate material in a triangular cross section, so that various problems due to deformation of the edge covering portion can be prevented. As a result, the durability of the metal pier is improved, and a concrete formwork with excellent durability can be obtained.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a concrete profile of the present invention.

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

FIG. 3 is a perspective view showing a metal splint used for a concrete template.

FIG. 4 is a sectional view showing an example of a conventional concrete template.

FIG. 5 is a perspective view showing a metal splint used in a conventional concrete template.

[Explanation of symbols]

11 ... Plate material, 11a ... Edge surface, 12 ... Metal crosspiece, 13 ... Fixed part, 14 ... Connection part, 15 ... Edge covering part.

Claims (1)

[Scope of utility model registration request] 1. A plate member, which is made of plywood and has an edge surface inclined outward from one surface to the other surface, and a metal splint arranged along the edge of the plate member. Has a fixing portion that abuts on one surface of the plate material and is fixed to the plate material, a connection portion that is connected to a metal splint provided in another adjacent frame, and an edge cover portion that covers the edge surface. A metal splint, and the edge covering portion has an inner side surface covering the edge surface of the plate material and an outer side surface facing the inner side surface, and the inner side surface forms an inclined surface along the edge surface, A concrete formwork, wherein the outer side surface forms a surface along a direction perpendicular to the surface of the plate material.