JPH0452277Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to an embedded formwork suitable for constructing concrete slopes and the like constructed for the protection of sloping mountains.

[Conventional technology]

Conventionally, concrete slopes have been installed as protection works for sloped mountains and slopes. There are various methods of constructing this method, but the paper form construction method or the formwork embedding method is often used because of its good workability.

The former method, as shown in Japanese Patent Application Laid-Open No. 54-10504, uses a lightweight and disposable core-shaped paper form to cast concrete for the legal frame. The latter construction method was developed in 1973.
As shown in Publication No. 46362, a wire mesh formwork is combined with a reinforcing cage and concrete is sprayed on it.
It is to be buried.

[The problem that the idea aims to solve]

The former method has the advantage that the formwork is lightweight, easy to construct, and has high construction accuracy, but since the formwork is made of paper, it has low strength and requires a large amount of reinforcing material. The problem is that it is difficult to use for legal frames with large cross sections. The latter construction method can be applied to slope frames of various sizes and cross-sections, but it is troublesome to assemble the wire mesh formwork and the reinforcing bar basket because they are connected using binding wires, etc., and because the formwork is made of wire mesh, When forming a cross-sectional legal frame, it is necessary to apply various types of reinforcement, and since wire mesh has low rigidity and has many irregularities, construction accuracy is poor, and it is troublesome to apply a top coat to shape the concrete after concrete is sprayed. There are construction problems.

The present invention aims to solve the problems in the conventional techniques and provide a formwork device that is excellent in workability and economy, has high strength, and can be installed with high precision.

[Means to solve the problem]

Next, the structure of the present invention will be explained with reference to the drawings corresponding to the embodiments.The present invention has the following features: (1) A bulge portion 3 bent in the horizontal direction is provided at one end, and an inner portion of the other end is provided. the bulge 3 in the
A small engagement protrusion 4 bent in the same direction as the bulging portion 3 is provided to form a transverse strip 1, and a large number of the transverse strips 1 are arranged vertically at intervals, and these transverse strips 1, 1 are connected to the bulge of the bulge 3. On the exit side, both terminal parts and the bulging part 3
(2) In the above item, the engaging protrusion 4 is connected by vertical bars 2, 2 arranged at multiple locations at the inner base and the middle part, and is formed into a flat plate shape as a whole; , each transverse strip 1 is bent 5 from approximately the center to form an L-shaped plate shape as a whole.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

Referring to Fig. 1, 1 and 1 are horizontal stripes, which extend in the length direction of the formwork of the present invention, and are arranged vertically at a required interval, and on one side thereof, both ends and the middle section are arranged. A large number of vertical bars 2, 2 extending in the vertical direction are arranged at substantially the same intervals, and the horizontal bars 1, 1 and the vertical bars 2, 2 are connected to each other by welding or the like. At one end of each horizontal reinforcement 1, a large mountain-shaped bulge 3 is provided between the vertical reinforcements 2, 2 and bent in the horizontal direction on the joining side of the vertical reinforcements 2, 2. At the other end of the horizontal strip 1, there is a small mountain-shaped engagement bent in the same direction as the bulge 3 at a position inward from the end, that is, close to the vertical strip 2 located next to the end. A protrusion 4 is provided, and the entire formwork body A is formed into a flat plate shape.

The above-mentioned formwork body is mainly applied to the construction of straight parts such as concrete slope frames.

FIG. 2 shows a modified formwork body A in which the overall shape of the formwork body A is changed, and the horizontal strips 1, 1 are bent at almost right angles 5 from the central part to form an L-shaped plate shape as a whole. B
It is. This formwork body B is mainly applied to the construction of intersections of concrete slopes and the like.

The shapes of the bulging portion 3 and the engaging projection 4 are not limited to the mountain shape as described above, but may be various bulging shapes such as an arc shape or a trapezoid shape.

The formwork bodies of the present invention are usually used by joining a plurality of them together in the length direction when constructing a legal framework or the like.
In this case, the formwork bodies are connected to each other by overlapping one end of one formwork with the bulging part 3 and the other end of the other formwork with the engagement protrusion 4. Ru. That is, as shown in FIG. 3, on the side where the vertical bars 2a and 2b at one end of one formwork body A and B are joined, the other formwork bodies A' and B' are attached. Position the ends, align the vertical bars 2n at the terminals with the inner side of the vertical bars 2b of one of the formwork bodies A and B, and place one of the formwork bodies A in the recesses of the engagement protrusions 4, 4. , B are engaged, and the horizontal stripes of the bulging portion 3 and the straight vertical bars 1 of the other formwork bodies A' and B' are superimposed vertically.
As a result, a gap a is formed between the bulge portion 3 and the overlapping longitudinal stripes 1. Then, a fourth
~ As shown in Figure 6, if the anchor bars 6 are inserted, one formwork body A, B and the other formwork body A',
This means that it can be integrally combined with B′.

Figure 4 shows an example of assembling formwork when constructing a straight part such as a legal framework. In this case, flat formwork bodies A and A are used, and the formwork is assembled as described above. Connecting members 7, 7 in which A and A are connected to each other, and the connected parts are opposed in parallel at a required interval, and for example, as shown in the figure, bifurcated hook pieces 8, 8 are provided at both ends. The vertical reinforcements 2, 2 are fitted into the forks, and the hook pieces 8, 8 are engaged with the horizontal reinforcements 1, 1, thereby connecting the opposed form bodies A, A. Then, main reinforcements 9, 9 are arranged between the opposed form bodies A, A, and concrete 10 such as concrete or mortar is poured between the form bodies A, A. Concrete 10 is also sprayed from the outside, and the form bodies A, A are buried in the concrete 10 as shown in FIG.

Figure 5 shows an example of formwork assembly when constructing intersections such as legal frames using the L-shaped plate-shaped frames B and B shown in Figure 2. The bodies B, B are arranged with their bent tops 5, 5 facing each other, and the adjacent formwork bodies B, B are connected by the above-mentioned connecting members 7, 7. And each form body B,
Another mold body B of the same type or a mold body A of a different type is connected to each end of B in the manner described above.

Further, when constructing a T-shaped intersection such as a legal frame, the formwork may be formed by appropriately combining the flat formwork bodies A, A and the L-shaped formwork bodies B, B.

[Effect of idea]

As explained above, the formwork of the present invention has a bulge bent in the horizontal direction at one end, and a small retainer bent in the same direction as the bulge at the inner position of the other end. A mating protrusion is provided to form a transverse stripe, a large number of the transverse stripes are arranged vertically at intervals, and the transverse stripes are connected to both end portions, the protrusion, and the engaging protrusion on the bulge side of the bulge. The inner base of the frame and the middle part are connected by vertical bars placed at multiple locations, and the entire formwork is formed into a flat plate, and this formwork is bent from approximately the center of the horizontal bars to form an L shape as a whole. Since it has a plate-like configuration, it has the following excellent effects.

(1) The formwork body has a structure in which a large number of horizontal reinforcements and vertical reinforcements are cross-connected in a lattice shape, so it is lightweight, has excellent strength and rigidity, is easy to handle, and is suitable for large cross-section slope frames. Also, there is no need to use batten or other reinforcing materials.

(2) Formwork bodies are joined by taking advantage of the bulging part provided at one end of the formwork body and the engaging protrusion provided at the other end of the other formwork body, and By inserting anchor reinforcements between the two formwork bodies and the horizontal reinforcement of the other formwork body, the bonding force between the formwork bodies and the formwork body and the ground is large, and dimensional accuracy is achieved. It is possible to assemble the formwork with a high degree of accuracy, and therefore, the concrete framework etc. in which the formwork body is buried can be made with good accuracy and finish.

(3) The bulging portion and the engaging protrusion can be formed simply by joining straight horizontal stripes with vertical stripes and then pressing, so they can be easily manufactured and provided at low cost.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an embodiment of the first aspect of the present invention, Fig. 2 is a perspective view showing an embodiment of the second aspect of the invention, and Fig. 3 shows how the formwork bodies are connected to each other. A perspective view for explanation, FIG. 4 is a plan view showing an example of how the formwork is assembled, FIG. 5 is a plan view showing another example, and FIG. 6 is a concrete structure constructed using the formwork of the present invention. It is a longitudinal cross-sectional view showing the object. A...Flat-shaped formwork body, B...L-shaped plate-like formwork body,
1...Horizontal stripe, 2...Vertical stripe, 3...Bulge, 4...
Engagement protrusion, 5... Bent top, 6... Anchor muscle,
7... Connecting material, 9... Main reinforcement, 10... Concrete.

Claims (1)

[Claims for Utility Model Registration] (1) One end is provided with a horizontally bent bulge, and the other end is provided with a small engagement protrusion bent in the same direction as the bulge. are provided to form transverse stripes, a large number of the transverse stripes are arranged vertically at intervals, and the transverse stripes are arranged on the bulge side of the bulge portion between both end portions and the inside of the bulge portion and the engaging protrusion. 1. A concrete formwork body for embedding, characterized in that it is connected by vertical reinforcements placed at multiple locations at the base and middle parts, and is formed into a flat plate shape as a whole. (2) Bends from approximately the center of each transverse muscle, making the entire L
The concrete form body for embedding according to claim 1, which is characterized in that it is formed into a plate shape.