JP2744995B2 - Concrete formwork forming panel - Google Patents

Description

The present invention relates to a technique for constructing a concrete structure using expanded metal with ribs (hereinafter simply referred to as expanded metal) which is usually called a lath net. The present invention relates to a concrete form forming panel using the expanded metal with ribs.

(B) Conventional technology In concrete formwork, thick plywood, which is generally called a concrete panel, is used, but the concrete panel tends to be easily cut and wasted, and has poor durability. It becomes unusable in a few times. Due to its heavy weight, handling and transport operations are troublesome, and the used concrete panels are produced as a large amount of waste material. Therefore, a concrete formwork using a light and strong expanded metal with ribs for the weir plate instead of the concrete panel has been developed and adopted in various fields, and has been well received.

(C) Problems to be Solved by the Invention In the above-mentioned conventional concrete formwork, not only is the frame work complicated, but also because the panel surface is a coarse mesh, excessive When the mold is dismantled, the mortar component that has leached from the mesh hardens and the panel is wrapped in concrete,
The expanded metal cannot be separated from the concrete and is left buried. Therefore, not only can the precious molds not be reused, but if the remaining expanded metal rusts and corrodes due to aging, there is a concern about the effect on concrete structures. Even if the expanded metal can be separated from the concrete, a mesh pattern is clearly left on the surface of the concrete structure, and the finishing process is required.

D) Means for Solving the Problems The present invention was developed as a result of earnest research to improve the drawbacks that have arisen with respect to the above-mentioned conventional technology for constructing a concrete structure using expanded metal. A column-shaped both-side frame arranged in parallel to
A panel for forming a concrete form comprising an expanded metal in which ribs are orthogonally combined with the frame and integrally combined between the frames, and a water-permeable sheet body which is in close contact with one side of the expanded metal. As specific fixing means for the sheet body, the sheet body includes a concave groove provided along the longitudinal direction on the sheet body overlapping side surface of the frame, and an elastic rod body press-fit into the concave groove. The edges are clamped. Further, a specific connection between the frame and the expanded metal with ribs is provided by providing a V-shaped notch groove on the opposite side of the back plate of the frame, and fitting the rib to the V-shaped notch groove orthogonally to the frame, And the V-shaped cut groove are fixed by caulking with a stud, and the expanded metal with ribs and the frame are integrally combined.

E Action The expanded metal is integrated with the frame, so it is easy to handle, and only excess water flows out through the water-permeable sheet, preventing concrete from flowing out of the sheet. You. As a result, the surface of the concrete structure is formed smoothly, the mortar component does not flow out of the mesh and does not adhere to the mesh of the expanded metal, and the expanded metal can be easily separated from the concrete structure and can be reused. it can.

F Examples An embodiment of a concrete form forming panel according to the present invention and a method of constructing a concrete structure using the panel will be described with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a panel for forming a concrete formwork. The panel 1 for forming a concrete form has a support-shaped frame 2, 2 having a U-shaped cross section on both left and right sides, and is arranged in parallel. Between the frames 2, 2, an expanded metal 3 is integrally combined with and coupled to the back plates 2a, 2a with the ribs 3a orthogonal to the frames 2, 2.
On each of the back plates 2a, 2a of the frames 2, 2, V-shaped notches 4, 4,... Having a rib width are formed on opposite sides, and ribs of the expanded metal 3 are formed into the V-shaped notches 4, 4,. 3a are fitted, and the expanded metal 3 and the back plate 2a are caulked with studs 5, 5,... So that they are flush with each other. The back plate 2a of the frame 2 is formed with concave grooves 6, 6 bent along the longitudinal direction, and the side plate 2b is provided with bolt insertion holes 7, 7,.
Are drilled. Further, on the front side surface of the expanded metal 3, a sheet body 8 which is superimposed on the expanded metal 3 in a close contact state is applied with both side edges on the concave groove 6,
By pushing a rod body 9 made of synthetic resin having elasticity into the concave groove 6, the rod body 9 is clamped and fixed between the concave groove 6 and the rod body 9. The sheet body 8 is a cloth-like material called a warif formed by crossing vertically and horizontally a strong thin tape of a synthetic resin and integrally bonding the tapes. The sheet body 8 has water permeability, and The other side can be seen through.

The concrete form forming panel (hereinafter simply referred to as a panel) 1 formed in this manner is made of expanded metal 3.
The ribs 3a and the frame 2 form a sturdy rectangular plate, which is also lighter than a concrete panel.

Next, an example of a concrete form using the panel 1 will be described. For example, in the case of a wall for a wall, as shown in FIG. The panel 1 is mounted face-to-face and fixed. This framing work is the same as the well-known framing method using concrete panels, so detailed description is omitted. However, bolts and nuts are used between adjacent panels using bolt insertion holes formed in the frame. And the separator can be penetrated by using a network of expanded metal.

The concrete formwork assembled in this way
Since the inside of the frame can be seen through, it is easy to check the arrangement of the reinforcing bars and to install the separator. In addition, the expanded metal can be handled as a panel integrated with the frame, so that the operation can be performed smoothly.

And when concrete is poured, only excess water flows out and the mortar component is prevented from flowing out by the sheet body, so there is no trouble in treating the mortar component flowing out to the floor, and the formed concrete structure is ,
Exhibits the same strength as using concrete panels, and can be finished to a smooth surface. Also, the panels can be easily separated and reused.

In the above embodiment, a synthetic resin cloth called warif is used as the sheet body. However, as long as the sheet body has water permeability and the required strength, the material, the structure, etc., do not matter. It does not require materials that can be reused even for the body. As means for connecting the expanded metal and the frame, welding, screwing, etc. can be used in addition to the means for caulking the studs, and the means for fixing the sheet body is merely sandwiched between the concave groove and the elastic rod. Instead, they can be fixed with clips or stuck and fixed with adhesive tape. Further, the size and shape of the panel and examples of use of the formed frame are not limited to the embodiments.

G Effect According to the present invention, the framework can be completed simply by combining and fixing the panels, so that the framework work is simple and handling during transport and disassembly can be performed quickly. Also, since a water-permeable sheet is interposed between the concrete and the concrete structure, the quality of the formed concrete structure can be improved, and the concrete and the panel have good peelability and can be reused. And the benefits are enormous.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an embodiment of the panel according to the present invention, FIG. 2 is an assembled perspective view of the panel, FIG. 3 is an enlarged view of a caulking portion, FIG. FIG. 4 is an explanatory view of a state where the mold is disassembled. DESCRIPTION OF SYMBOLS 1 ... Panel, 2 ... Frame, 2a ... Back plate, 3 ... Expanded metal, 3a ... Rib, 4 ... V-shaped notch groove, 5 ... Tack, 6 ... Concave groove, 7 ... Bolt Insertion hole, 8 ...
... sheet body, 9 ... rod body, 10 ... base frame.

Claims (3)

(57) [Claims] 1. An expanded metal with ribs, wherein ribs are integrally combined and connected between the frames in a direction perpendicular to the frame, and one side of the expanded metal with ribs. A sheet having a water-permeability that is polymerized in close contact with the groove, wherein the sheet is provided with a concave groove provided along the longitudinal direction on the sheet-polymerized side surface of the frame, and an elastic rod member press-fit into the concave groove. With this, a concrete form forming panel that is sandwiched and fixed on both side edges. 2. A V-shaped notch groove is provided on the opposite side of a back plate of a two-sided support frame arranged in parallel with a rib of an expanded metal with ribs, and the V-shaped notch groove is perpendicular to the frame. And the rib and the V-shaped notch are fixed by caulking with a rivet, and the expanded metal with ribs and the frame are integrally combined and joined, and the side of the frame of the expanded metal with ribs has water permeability. Panels for forming concrete formwork in which the obtained sheet bodies are polymerized in close contact. 3. The superposition of the sheet body on one side of the expanded metal with ribs is performed by a concave groove provided in the back plate surface of the frame along the longitudinal direction, and an elastic rod body press-fitted into the concave groove. 3. The concrete formwork forming panel according to claim 2, wherein the panel is sandwiched and fixed by sandwiching both side edges of the sheet body.