JPH0581303U - Stranded wire mesh and concrete pavement structure using it - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a diamond-shaped wire mesh that is easy to manufacture and easy to connect to each other. [Structure] A diamond-shaped twisted wire net formed by connecting a plurality of twisted metal wires 1 formed by twisting a plurality of metal wires 3 in a sawtooth shape and connecting them symmetrically one after another.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a diamond wire mesh, and more particularly to a diamond wire mesh formed of twisted metal wires.

[0002]

[Prior Art]

 A conventional diamond wire mesh is formed by forming a single metal wire (hereinafter, referred to as a single wire) in a saw-tooth shape and combining them, and connecting them symmetrically. Also, in conventional concrete paved roads, grid-like welded wire mesh or reinforcing bars are used as a reinforcing material for concrete.

[0003]

[Problems to be solved by the device]

 In the above-mentioned conventional diamond-shaped wire mesh, the strength of the single wire itself must be increased in order to improve the characteristics of the wire mesh. However, if the strength of the single wire is increased, the single wire becomes difficult to bend, making it difficult to manufacture the diamond wire mesh. Further, the conventional use of the rhomboid wire mesh is to prevent the entry of general third parties into a predetermined area, and there is no one using this diamond wire mesh as a reinforcing material for a concrete paved road. In addition, on a conventional concrete paved road that uses a grid-shaped welding wire mesh or reinforcing bars as a reinforcing material for concrete, when connecting multiple grid-like welding wire meshes or reinforcing bars, welding etc. must be performed, which is troublesome. is there.

Therefore, the present invention has been made in view of the above problems of the prior art, and an object of the present invention is to provide a rhombic wire net which is easy to manufacture and can be easily connected to each other.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, in the invention of claim 1, a rhomboid wire mesh is formed by twisting a plurality of metal wires into a twisted metal wire formed into a serrated shape. It was composed by connecting to. Further, in the invention of claim 2, the twisted wire mesh is embedded as a reinforcing material in the concrete of the concrete paved road.

[0006]

[Action]

 In the present invention, since the twisted wire mesh is formed of the twisted wire, the diamond wire mesh can be easily manufactured. This is because the stranded metal wire has low rigidity and is easily bent. Further, in the present invention, the twisted wire mesh is used as a reinforcing material for a concrete paved road. In this case, since the twisted wire mesh is diamond-shaped, by forming a large number of diamond-shaped wire meshes in advance, the joining work at the site can be easily performed without the need for welding such as a single wire welding mesh or reinforcing bars. Is possible. Furthermore, when using a twisted wire mesh as a reinforcing material for a concrete paved road, by forming the metal wire into a twisted wire shape, the contact area between the concrete part and the surface of the twisted wire metal wire increases, and It is possible to improve the strength. Furthermore, when the stranded wire mesh is embedded in concrete as a reinforcing material, the horizontal elongation of the stranded wire mesh with respect to the ground surface is small. This results in less vertical variation of the ground (which is a desirable property for reinforcements). By using the twisted wire mesh having such characteristics, it is possible to obtain an efficient concrete.

[0007]

【Example】

 An embodiment of the present invention will be described with reference to the drawings. First, the structure of the diamond wire mesh will be described with reference to FIG. First, metal wires 1 formed in a saw-tooth shape (Fig. 2 (a)) are connected symmetrically one after another (Fig. 2 (b)), and a rhombic wire mesh 2 as a whole (Fig. 2 (c)). To form. In the present invention, as shown in FIG. 1, the metal wire 1 is formed by forming a plurality of iron wires 3 into a stranded shape. In FIG. 1, two iron wires 3 are twisted to form a stranded metal wire 1, but the stranded metal wire 1 may be formed by twisting three or more iron wires 3. .. Further, the iron wire 3 may be aluminum, copper or the like other than iron.

Next, FIG. 3 shows a cross section of a stranded metal wire 1 having different numbers of twists of the iron wire 3. FIG. 3 (a) is a view (cross-sectional view of a portion A in FIG. 1) showing a cross section when the two metal wires 3 are twisted to form the stranded metal wire 1, and FIG. Fig. 3 is a view showing a cross section when three iron wires 3 are twisted to form a stranded metal wire 1, and Fig. 3 (c) shows a stranded metal wire 1 in which five iron wires 3 are twisted. FIG. 3 (d) is a diagram showing a cross section in the case of forming a stranded metal wire 1 by twisting seven iron wires 3.

Next, the characteristics of the twisted wire mesh 2 will be described with reference to FIG. 4 in comparison with a single wire mesh. First, elongation and strength are required properties of wire mesh. Here, the elongation is the elongation in the direction of arrow B in FIG. The strength is the strength per unit area of a metal wire or a single wire (kgt / mm ² ). In this case, if the strength (strength per unit area) of the twisted wire mesh 2 or the single wire mesh is increased, the characteristics of the wire mesh are improved.

When the strength is increased in order to improve the characteristics of the wire mesh, the rigidity (per unit cross-sectional area) is large in the case of a single wire, which makes it difficult to bend during the manufacture of the wire mesh. The structure (see FIG. 4 (a) viewed from the direction of arrow C) of the single wire wire mesh of FIG. 4 is as shown in FIG. On the other hand, in the case of the stranded metal wire 1, since the rigidity is low, it is easy to bend during the production of the wire mesh, and the structure of the stranded wire mesh 2 after the production is as shown in FIG. 4 (b), Its height (L2) is small.

Therefore, when a tensile force is applied to the wire mesh in the direction of arrow B, the single wire wire mesh (FIG. 4 (b)) expands greatly, and the twisted wire mesh (FIG. 4 (c)) expands less. As described above, when a stranded wire net having the same strength and a single wire woven wire are compared, the stranded wire net has an excellent property that the elongation is smaller. Further, in the case of the single wire and the stranded metal wire 1, the whole surface area of the stranded metal wire 1 is larger than that of the single wire of the same length because the stranded metal wire 1 is formed by twisting the iron wire 3.

Next, a case where the twisted wire net 2 having the above-mentioned excellent properties is used as a reinforcing material for the concrete paved road 6 will be described. As shown in FIG. 5, the twisted wire nets 2 are installed above and below the concrete portion 5, respectively. Regarding the installation method of the twisted wire mesh 2, a large number of diamond-shaped twisted wire meshes 2 are formed in advance, and these are connected to each other on site. This joining work is easy because it does not require welding work as in the case of a grid-shaped welding wire mesh or a reinforcing bar.

Further, as described above, since the twisted wire mesh 2 has an excellent property that the elongation is small even if the strength is increased, the wire mesh having the structure shown in FIG. 4C is embedded in concrete. In this case, even if a tensile force is applied to the twisted wire mesh 2 in the direction of arrow B in FIG. 4, the fluctuation in the vertical direction of the ground surface is small. Therefore, the twisted wire mesh 2 is preferable as a reinforcing material for the concrete paved road 6. On the other hand, in the case of a single wire gauze (Fig. 4 (b)), since the elongation is large, the vertical fluctuation of the ground is large. Therefore, the single wire mesh is not preferable as a reinforcing material for the concrete paved road 6. Further, as described above, in the stranded metal wire 1, it is possible to increase the total surface area as compared with the single wire. As a result, the contact area with the concrete portion 5 can be increased, and the strength of the concrete can be improved. In this embodiment, as an application of the twisted wire mesh 2 according to the present invention, a case where the twisted wire mesh 2 is used as a reinforcing material for a concrete paved road 6 has been described, but the twisted wire mesh 2 may be used for improving soft ground. ..

[0014]

[Effect of the device]

 According to the present invention, since the twisted wire mesh is formed of the twisted metal wire, the diamond-shaped wire mesh can be easily manufactured. Furthermore, in the present invention, the twisted wire mesh is used as a reinforcing material for a concrete paved road. In this case, since the twisted wire mesh is diamond-shaped, by forming a large number of diamond-shaped wire meshes in advance, the joining work at the site can be easily performed without the need for welding such as a single-wire welded mesh or rebar. Is possible. Furthermore, when using a twisted wire mesh as a reinforcing material for a concrete paved road, by forming the metal wire into a twisted wire shape, the contact area between the concrete part and the surface of the twisted metal wire increases, and the strength of the concrete increases. It is possible to improve. Furthermore, when the stranded wire mesh is embedded in concrete as a reinforcing material, the horizontal elongation of the stranded wire mesh with respect to the ground is small. This results in less vertical variation of the ground (which is a desirable property for a stiffener). By using the twisted wire mesh having such characteristics, efficient concrete can be obtained.

[Brief description of drawings]

FIG. 1 is a perspective view of a stranded metal wire.

FIG. 2 is a diagram showing a configuration of a diamond wire mesh.

FIG. 3 is a view showing a cross section of a stranded metal wire having a different number of twists.

FIG. 4 is a diagram showing a difference in characteristics between a stranded wire mesh and a single wire mesh.

FIG. 5 is a diagram showing a case where a twisted wire mesh is used as a reinforcing material for a concrete paved road.

[Explanation of symbols]

 1 Stranded metal wire 2 Rhombus wire mesh 3 Iron wire 5 Concrete part 6 Concrete paved road

Claims (2)

[Scope of utility model registration request] 1. A diamond-shaped twisted wire mesh, which is formed by connecting a plurality of twisted metal wires formed by twisting a plurality of metal wires in a sawtooth shape and connecting them symmetrically one after another. 2. A concrete pavement structure, wherein the twisted wire mesh according to claim 1 is embedded as a reinforcing material in the concrete of a concrete paved road.