JPH0519385Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a reinforcing bar assembly to be placed in the ground when constructing a slope protection structure, and in particular relates to a prefabricated reinforcing bar assembly. be.

[Conventional technology]

Traditionally, formwork is constructed in a lattice pattern to extend horizontally and vertically along the ground, and after placing reinforcing bars within the formwork,
Slope protection structures constructed by pouring concrete into formwork are known.

In recent years, the above-mentioned slope protection structures have begun to be constructed, particularly those having strong structures with a large amount of reinforcing bars.

When constructing such a slope protection structure with a large amount of reinforcing bars, it is extremely difficult to accurately arrange the reinforcing bars as designed on uneven slopes.

However, according to the reinforcing bar assembly 1 as shown in FIGS. 5 and 6, reinforcing bars can be placed accurately and easily in the ground. This type of reinforcing bar assembly 1 is prefabricated at a factory and transported to the site for installation. As shown in the figure, in the reinforcing bar assembly 1, a set of main reinforcing bars 4 is constituted by at least two upper reinforcing bars 2, 2 and at least two lower end reinforcing bars 3, 3. The upper end reinforcements 2, 2 and the lower end reinforcements 3, 3 are spaced apart from each other by an appropriate interval and arranged in parallel. The upper end reinforcements 2, 2 are placed on the top side of the formwork 5, and the lower end reinforcements 3, 3 are placed on the ground side.The number of reinforcements can be selected as appropriate, but at least they are placed on the left and right ends. A main reinforcement assembly 4 is constructed using two main reinforcements 2 and 3.

Two sets of main reinforcement assemblies 4 made up of at least four main reinforcements 2 and 3 are assembled in a cross shape by intersecting each other.

In this state, each main reinforcement 2, 3 is fixed at a desired position, and the whole is integrated. For example, a rectangular ring-shaped hoop reinforcement 6 is placed around the outer circumference of the main reinforcement and fixed by welding or the like, and main reinforcements that intersect with each other are fixed by welding or the like.

As shown in a part of FIG. 5, a plurality of rectangular ring-shaped hoops 6 are applied to the main reinforcement assembly 4 that extends in all directions, and each hoop 6 is arranged along the main reinforcements 2 and 3. It is becoming movable.

In this way, the main reinforcing bar assembly 4, over which the plurality of hoop reinforcements 6 of the reinforcing bar assembly 1 are hung, protrudes in all directions, is made of formwork such as expanded metal or crimp wire mesh, as shown in a part of Fig. 6. Surrounded by 5.

Then, as shown in FIG. 4A, concrete 7 is poured or sprayed into the formwork 5 from the outside to fill it, and then the outside of the formwork 5 is finished with mortar 8. A slope protection structure 9 was formed.

[The problem that the idea attempts to solve]

By the way, when forming the slope protection structure 9 using the reinforcing steel assembly 1 as described above, when concrete 7 is poured or sprayed from outside the formwork 5, it will be inside the formwork 5. There was a problem in that the concrete 7 was not evenly filled all over, resulting in the formation of nests (spaces) 10 as shown in FIG. 4B.

This is because the concrete 7 applied to the slope protection structure 9 is mixed at a mixing ratio that gives it some degree of viscosity, so the concrete 7 is difficult to penetrate into the interior through the holes of the formwork 5, and Frame 5
This is because only a small amount is filled inside.

In view of the above-mentioned problems, an object of the present invention is to solve the problem without reducing the shear strength of the slope protection structure.
To provide a reinforcing bar assembly capable of uniformly and thoroughly filling a formwork with concrete.

[Means to solve the problem]

In order to achieve the above object, the present invention consists of main reinforcements consisting of at least two upper end reinforcements and at least two lower end reinforcements, which are arranged in parallel at appropriate intervals to form a main reinforcement assembly. Two sets of bodies are crossed and fixed in a cross shape, and the outer periphery of the main reinforcing assembly that extends in all directions is surrounded by an expanded metal cylinder that can be divided into upper and lower parts.

[Effect]

Rebar assemblies are delivered to the site, placed at the vertical and horizontal intersections of the slope protection structure, and fixed to anchors driven into the ground. In this state, positioning of the reinforcing bars in the longitudinal and lateral directions along the ground etc. is completed.

The main reinforcing bars are spanned between the ends of the main reinforcing bars of the reinforcing bar assembly, which are arranged at appropriate intervals, so that they overlap.
The height of this main reinforcing bar may be adjusted to the main reinforcing bar of the reinforcing bar assembly.

Next, the lower divided body of the expanded metal cylindrical body is attached to the lower part of the outer periphery of the main reinforcing bar assembly that extends on all sides of the reinforcing bar assembly, and the inside of the lower divided body is filled with concrete by pouring or spraying.

Then, the upper divided body of the expanded metal cylindrical body is attached to the upper part of the outer periphery of the main reinforcing assembly extending in all directions, and concrete is poured or sprayed into the inside from the outside to fill it.

Thereafter, the expanded metal cylinder is surrounded by a formwork made of expanded metal or crimped wire mesh, and concrete is poured again between the formwork and the expanded metal cylinder from the outside of the formwork. Spray and fill.

Finally, the outside of the formwork is finished with mortar to form a slope protection structure.

By being able to divide the expanded metal cylindrical body into upper and lower parts in this way, concrete can be evenly and thoroughly filled inside the formwork, and the rigidity of the expanded metal reduces the shear strength of the slope protection structure. I won't let you.

〔Example〕

A preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIGS. 2 and 3, the reinforcing bar assembly 11 of the present invention consists of two main reinforcing bar assemblies 12, 12. These main reinforcement assemblies 12, 12 are a combination of two upper end reinforcements 13, 13 and two lower end reinforcements 14, 14, which are arranged in parallel with each other at appropriate intervals. These two sets of main reinforcement assemblies 12,
12 are crossed with each other and assembled into a cross shape. The above-mentioned two upper end reinforcements 13, 13 of the main reinforcement assemblies 12, 12 extending in all directions, and the above-mentioned two lower end reinforcements 1
4 and 14, an expanded metal cylinder 15
An upper divided body 15a and a lower divided body 15b are respectively attached.

When the upper divided body 15a and the lower divided body 15b are assembled by crossing the two sets of main reinforcement assemblies 12, 12, the open ends of each are overlapped to form an expanded metal cylinder 15. This expanded metal cylinder 15 is formed into a rectangular cylinder by combining expanded metals molded into a U-shape, so that it can be divided into upper and lower parts.

In addition, for the reinforcing bar assembly 11 of the present invention, expanded metal is optimal in terms of rigidity, but it is also possible to use punched metal in which a plurality of holes are opened in an iron plate.

By assembling the upper and lower divisions so that their edges are alternately overlapped, the upper and lower divisions 15a and 15b can be formed into the same shape and size. Further, the divided edges are lapped so that the holes of the expanded metal overlap by about three holes.

The reinforcing bar assembly 11 as described above is carried to the site, placed at an appropriate position on the ground, and fixed at the intersection to an anchor driven into the ground or the like. In this state, the positioning of the reinforcing bars in the vertical and horizontal directions along the ground etc. is completed.

Then, the ends of the main reinforcing bars 16 are overlapped with the ends of the main reinforcing bars 13 and 14 of the reinforcing bar assembly 11, and the main reinforcing bars 16 are spanned and continuous between the adjacent reinforcing bar assemblies 11 and 11. If necessary, main reinforcements may also be provided between the upper end reinforcements 13a, 13a and the lower end reinforcements 14a, 14a shown in FIG. The height of the main reinforcing bars 16 may be adjusted to match the main reinforcing bars 13 and 14 of the reinforcing bar assembly 11.

Next, as shown in FIG. 1, the upper divided body 15a of the expanded metal cylindrical body 15 attached to the upper part of the outer periphery of the main reinforcement assemblies 12, 12 protruding in all directions of the reinforcing bar assembly 11 is removed, and the main reinforcement assembly 12 is removed. body 12,1
Concrete 7 is cast or sprayed to fill the inside of the lower divided body 15b attached to the lower part of the outer periphery of the concrete 7.

After that, the main reinforcement assemblies 12, 12 projecting in the four directions
The expanded metal cylindrical body 15 is placed on the upper outer periphery of the
The upper divided body 15a is attached, and concrete 7 is poured or sprayed into the inside from the outside to fill it.

If the lower divided body 15b is filled with concrete 7, even if the concrete 7 is cast or sprayed from the outside after the divided body 15a is attached, it will still fill the inside of the upper divided body 15a. Concrete 7 invades. The filling effect is higher if the lower divided body 15b is formed deeper than the upper divided body 15a.

After the expanded metal cylindrical body 15 is filled with concrete 7 evenly and without corners, the expanded metal cylindrical body 15 is surrounded by an expanded metal formwork 17, and from the outside of this formwork 17, this mold is filled. The space between the frame 17 and the expanded metal cylinder 15 is again filled with concrete 7 by pouring or spraying.

Finally, the outside of the formwork 17 is finished with mortar 8 to form a slope protection structure 18.

The above-mentioned expanded metal has greater rigidity against tensile forces in the longitudinal and lateral directions, since the intersecting portions are integrally formed during manufacture, compared to those knitted in the longitudinal and lateral directions, such as crimp wire mesh.

Therefore, the expanded metal cylinder 1
5 in place of the conventional plurality of hoop muscles 6, the shear force can be sufficiently resisted. Also,
In this embodiment, the dividing edges of the upper divided body 15a and the lower divided body 15b are overlapped by the third hole, so that when the concrete 7 enters the hole, this lap part Also, the tenon effect can sufficiently resist shearing forces.

By being able to divide the expanded metal cylindrical body 15 into upper and lower parts in this way, the concrete 7 can be evenly and thoroughly filled inside the formwork 17, and the rigidity of the expanded metal allows the slope protection structure 18 to be There is no reduction in shear strength.

[Effect of idea]

In summary, the reinforcing bar assembly of the present invention exhibits the excellent effect of being able to uniformly and thoroughly fill the inside of the formwork with concrete without reducing the shear strength of the slope protection structure.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing a slope structure using the reinforcing bar assembly of the present invention, Fig. 2 is a perspective view showing a state in which an expanded metal cylinder is attached to the main reinforcing bar assembly of the reinforcing bar assembly of the present invention, FIG. 3 is a perspective view showing the expanded metal cylinder of the reinforcing bar assembly of the present invention surrounded by a formwork. Figure 4A is a sectional view showing a conventional slope structure, Figure 4B is a sectional view showing a conventional slope structure with nests, and Figure 5 is a perspective view of a conventional seat. , FIG. 6 is a perspective view showing a state in which hoop reinforcements are attached to the main reinforcement assembly of a conventional reinforcement assembly;
FIG. 3 is a perspective view showing a state in which the hoop reinforcement of the reinforcing bar assembly of the present invention is surrounded by a formwork. 11...Reinforcement bar assembly, 12...Main bar assembly, 13...
...Top reinforcement (main reinforcement), 14...Lower end reinforcement (main reinforcement), 15
...Expanded metal cylindrical body.

Claims (1)

[Scope of utility model registration request] Main reinforcements consisting of at least two upper end reinforcements and at least two lower end reinforcements are arranged parallel to each other at appropriate intervals to form a set of main reinforcement assemblies, and these two sets of main reinforcement assemblies are crossed with each other to form a cross shape. This reinforcing bar assembly is characterized in that the outer periphery of the main reinforcing assembly that extends in all directions is surrounded by an expanded metal cylinder that can be divided into upper and lower parts.