JPH0519382Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to formwork for legal frameworks, which stabilizes various slopes.

<Conventional Technology> Currently, as a method for stabilizing slopes, a method is known in which a slope is formed on-site by spraying concrete within a formwork framed on the slope.

Generally, the formwork used in this type of construction method consists of two wire mesh strips that face each other, and connecting members in the form of parallel crosses that horizontally connect multiple locations between the wire mesh strips.

<Problems to be solved by the present invention> The conventional method of constructing a legal framework described above has the following problems.

<B> When framing the intersection of multiple sets of mesh formwork a as shown in Figure 6, corner wire mesh b bent into an L shape is placed at the butting point at the end of each mesh formwork a. We are dealing with it by setting it up.

However, the bending of the corner wire mesh b is carried out on a slope with poor footing, which not only requires a lot of effort but also poses a problem of ensuring the safety of the work.

<B> Also, as shown in Figure 7, the mesh frames a and a are
Corner wire meshes b and b are also provided in frames where they intersect at angles other than 90°.

If the intersection angle is other than 90°, there will be the same problem as in <A> above, and it will be necessary to bend the individual corner wire meshes b and b to accurate angles so that they have a supplementary angle relationship. is extremely difficult.

<Purpose of the present invention> The present invention solves the above-mentioned problems.The purpose of the present invention is to create a legal frame that can facilitate the framing work at the intersection of formwork and ensure work safety. Our purpose is to provide formwork for

<Configuration of the present invention> An embodiment of the present invention will be described below with reference to the drawings.

<A> Formwork for legal framework An example of the formwork 10 for legal framework is shown in FIG.

The formwork 10 for the legal frame consists of a gate-shaped connecting member 20 and a pair of movable formworks 11 and 12, each of which has one end rotatably connected to both ends of the connecting member 20.

<B> Movable formwork The movable formworks 11 and 12 are made of a wire mesh made of iron wire arranged in the vertical and horizontal directions, or a strip-shaped porous member such as expanded metal. In this embodiment, a wire mesh made of equal pitches is used. Let me explain the case.

Each set of movable formworks 11 and 12 is rotatably connected to the connecting member 20, so that the angle can be freely adjusted.

The height of each movable formwork 11, 12 is equal to the height of the straight part formwork 40 shown in FIG.
The widths of the shapes 1 and 12 may be long enough to overlap and connect to the ends of the formwork 40 for the straight part.

<C> Connecting material The connecting material 20 has both a connecting function of foldably connecting each set of movable formworks 11 and 12 and a mooring function of straddling the reinforcing bar basket 30 and mooring it to the reinforcing bar cage 30.

The connecting member 20 is, for example, a gate-shaped member with an opening at the center of the lower part, and includes an upper connecting line 21 connecting the upper parts of the movable formworks 11 and 12 of each set, and the movable formworks 11 and 12 of each set.
Short lower extension lines 22, 22 which are rotatably connected to the lower part of 12 and extend in the horizontal direction, and upper connecting line 2.
1 and lower overhang lines 22, 22 vertically connecting hanging lines 23, 23, and positioning lines 24 formed by bending the free ends of each lower overhang lines 22, 22 downward,
24 and more.

Although the upper connecting line 21 does not bend easily,
It has appropriate rigidity and flexibility to deform when an operator applies a certain amount of bending force.

The reason why the upper connecting line 21 is given appropriate flexibility is to allow the width of the opening at the center of the frame 10 to be expanded and restored.

Both ends of the upper connecting line 21 and each lower overhang line 2
The base ends of 2 and 22 are rotatably wound around the vertical line of each set of movable formworks 11 and 12.

In this case, some horizontal lines of the movable formworks 11 and 12 of each set are omitted, and the upper connecting line 21 and the lower overhang line 2 are
2 may be configured to allow some vertical movement.

Furthermore, there are upper reinforcing bar mooring parts A, A at two places where the upper connecting line 21 and each suspension line 23, 23 intersect, and two places surrounded by each lower overhang line 22, each suspension line 23, and positioning line 24. lower reinforcing bar mooring part B,
It has B.

Upper reinforcing bar mooring parts A, A and lower reinforcing bar mooring parts B, B
The formation intervals are formed in accordance with the intervals between the main reinforcements 31 of the reinforcing bar cage 30.

<Effect> Next, the construction method will be explained.

<B> Installation of reinforcing bar cages As shown in Figure 3, the reinforcing bar cages 30 are installed along the planned slope construction line on the slope.

The reinforcing bar basket 30 has multiple main bars 31 arranged in parallel.
The hoop reinforcement 32 is surrounded by a group of hoop reinforcements, and is manufactured in advance in a factory or a flat place near the site and laid on the slope, or assembled directly on the slope and fixed to the slope.

Incidentally, before laying the reinforcing bar cage 30, the entire slope surface may be covered with various types of net materials.

<B> Setting the formwork for the straight section Next, as shown in FIG. 3, the formwork 40 for the straight section is installed along the reinforcing bar cage 30.

The straight part formwork 40 is a formwork for the purpose of constructing the straight part of the slope frame, for example, two band-shaped formworks 4 facing each other.
1 and 41, and a gate-shaped connecting member 50 that foldably connects the band-shaped forms 41 and 41.

The same wire mesh as the movable formworks 11 and 12 can be used for the band-like formworks 41 and 41.

Further, since the connecting member 50 has the same structure as the connecting member 20, it will be given a reference number in the 50s and its explanation will be omitted.

This formwork 40 for the straight section is transported to the slope, the center of the upper connecting line 51 is bent, the opening width of the lower part is widened, and the reinforcing bar cage 30 is covered from above.

When the lower opening of the connecting member 50 passes over the main reinforcement 31 on the upper side of the reinforcing bar basket 30, the bending force of the upper connecting line 51 is released and the connecting member 50 is restored to its original shape.

When the formwork 40 for the straight section is further pushed into the reinforcing bar basket 30, the lower main bars 31, 31 are housed in the lower reinforcing bars mooring parts B, B, as shown in FIG. The upper main reinforcement 31 comes into contact with and locks.

The intersection of each main reinforcement 31 and the connecting member 50 is fixed with a binding wire or the like to integrate the reinforcing bar cage 30 and the formwork 40 for the straight section.

<C> Framing of intersections For example, when framing a place where four sets of formworks 40 for straight sections intersect in a cross shape, prepare two sets of formworks 10, 10 for horizontal sections as shown in Fig. 1. do.

Then, in a process similar to the case of the formwork 40 for the straight section described above, each movable formwork 11, 12 of the formwork 10, 10 for the legal frame is angled according to the intersection angle of each band-shaped formwork 41, 41. While making the adjustment, the upper connecting line 21
is bent and sheathed onto the reinforcing bar cage 30.

Since each movable formwork 11, 12 is configured to be rotatable, the angle can be easily adjusted according to the intersection angle.

Next, each movable formwork 11 of the formwork 10, 10 for the legal framework,
12 and any one of the inner and outer surfaces of the corresponding band-shaped formworks 41, 41 are fixed at the locations where they overlap using a known fixing tool.

Furthermore, even if the intersecting angle between the straight part formworks 40 is other than 90°, the movable formworks 11 and 12 can rotate freely, so the parallelism between the movable formworks 11 and 12 can be maintained. Each set of straight section formwork 40 can be integrally connected.

<D> Spraying of mortar, etc. Finally, a consolidating material such as mortar or concrete is sprayed into the formwork 40 for the straight section, which has been integrated using the formwork 10 for the legal framework, as shown in Fig. 5. Obtain legal frame 60.

<Other Examples> The stitches of each movable formwork 11, 12 may be configured to become larger as they go lower.

This configuration has the advantage of preventing air pockets from forming within the concrete when spraying the concrete, resulting in high-quality construction.

In addition, when each movable formwork 11, 12 is formed of wire mesh, if the upper ends of the vertical lines protruding from the top of each movable formwork 11, 12 are folded back inward, the operation of the trowel during finishing can be made easier. In addition to smoothing the surface, the ends of the wire mesh are less likely to be exposed from the concrete surface, and can also be expected to have a rust-preventing effect.

<Effects of the present invention> Since the present invention is as explained above, the following effects can be obtained.

<B> Since the movable formwork is configured to be rotatable, angle adjustment work can be performed extremely easily.

Therefore, there is no need for on-site bending as in the past.

<B> The angle of the movable formwork can be adjusted freely with simple operations.

<C> For sites with poor footing, the formwork for the legal framework can be set in a short time by simply setting it from above the reinforcing bar cage and tying it to the formwork for the straight section.

Therefore, work safety is improved.

(d) Not only for connecting members at intersections,
If each movable formwork is arranged in a straight line, it can also be used as an extension member of the formwork for a straight part when the length of the formwork for a straight part is slightly insufficient.

[Brief explanation of the drawing]

FIG. 1: An explanatory view of one embodiment of the present invention, and an overall view before installing the formwork for the legal frame. Figure 2: Overall view of the formwork for the legal framework, Figure 3: An explanatory diagram of the construction method when the formwork for the straight section is bent and installed.
Figure 4: Explanatory diagram after installing the formwork for the straight section, Figure 5: Cross-sectional view of the slope frame after construction, Figure 6,
Figure 7: An explanatory diagram of the prior art.

Claims (1)

[Claim for Utility Model Registration] Consisting of a movable formwork in which a set of two formworks are hinged together, and a connecting member that connects the two sets of movable formworks, each set of movable formwork is a connecting member. A formwork for a legal framework, in which the connecting member has an opening in the center of the lower part and is formed into a gate shape with reinforcing bar cage mooring parts at multiple locations within the opening.