JPH0643231Y2 - Jig for laying net material - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a net material laying jig for laying a net material apart from a sloped ground such as a slope or a cut slope.

[0002]

2. Description of the Related Art As a slope protection method, there is known a method in which a net material as a reinforcing material is laid on the slope and then mortar is sprayed to protect the surface of the slope with a mortar layer. by the way,
In this type of construction, various spacers that are interposed between the slope and the net to slightly float the net from the slope and one of the steel rods for restraining the movement of the net during work are at right angles. Alternatively, an anchor pin bent in an inverted U shape and a rod-shaped measuring pin that is placed on the slope to confirm the spray thickness of the mortar layer are used. In general, the inspection pin has a colored top so that it can be distinguished from the anchor pin.

[0003]

[Problems to be Solved by the Invention] The conventional techniques for laying a net material described above have the following problems. <B> During work, the mesh material easily comes off from the spacer due to the spacer falling over. <B> A lot of time and labor is required for the work of interposing the spacer between the slope and the net material. <C> Since many spacers and inspection pins are required,
Storage and handling are troublesome. In addition, it takes a lot of trouble to place these many pins. <D> Due to the above <b> and <c>, the construction efficiency is poor.

[0004]

[Object of the present invention] The present invention has been made to solve the above problems, and its purpose is to provide a jig for net material laying, which is excellent in workability and has a high effect of preventing the net material from coming off. To provide.

[0005]

The present invention is a rod-shaped net material laying jig for laying net material at a certain distance from the slope, and a straight leg portion penetrating into the slope. , A leg extending parallel to the leg, and a bend connecting the upper part of the leg and the lower part of the rise at a certain intersection angle. A net material laying jig, characterized in that a valley portion for supporting the material is formed.

[0006]

DETAILED DESCRIPTION OF THE INVENTION The present invention will be described below with reference to the drawings. <A> Jig for laying net material FIG. 1 shows an example of the jig 1 for laying net material according to the present invention.
The net material laying jig 1 is formed by bending one continuous rod body, and has a linear leg portion 11 penetrating the slope 2 and a leg portion 11.
And the bent portion 12 bent through a certain angle θ and the leg portion 1
It is composed of a rising portion 13 formed in parallel with 1. Leg 11
And a mountain portion 14 is formed outside the bent portion of the bent portion 12,
In addition, the valley portion 1 is formed inside the bent portions of the bent portion 12 and the rising portion 13.
5 is formed. Each part will be described in detail below. <B> Leg part The leg part 11 is a part that penetrates the slope, and it is desirable to form the tip sharp. Further, the support height of the net material 3 is affected by the penetration depth of the leg portion 11. Therefore, it is advisable to display a number indicating the exposed length of the leg 11 on the outer circumference of the leg 11, mark the mark at regular intervals, or color the leg 11. <C> Bending portion The bending portion 12 is a portion that supports the mesh material 3 such as a known wire mesh,
More specifically, the valley portion 15 serves as a supporting portion for the net material 3. The total length of the bent portion 11 is determined in consideration of the mesh pitch of the mesh material 3, and when the wire rod 31 of the mesh material 3 is placed in the valley portion 15, the mountain portion 1
4 is set to a size that does not collide with other wire rods 31. It is desirable that the angle θ at which the bent portion 12 is bent be set within a range of an acute angle smaller than a right angle. If the angle θ of the bent portion 12 is set to an acute angle, the net material 3 can be reliably supported without being affected by the slope of the slope 2. This angle θ is not limited to an acute angle, but may be any other angle, in short, the movement of the mesh material 3 can be restricted by the valley portion 15,
In addition, it is sufficient if the angle can support the net material 3. <D> Standing part The standing part 13 is a part that forms the valley part 15 together with the bent part 12 and is colored to have a conventional function as a measuring pin. The total length of the rising portion 13 differs depending on whether the rising portion 13 is finally buried in the mortar layer or when the rising portion 13 is exposed on the surface of the mortar layer, and the total length is determined depending on the type of use. It

[0007]

[Usage Method] Next, a method of protecting the slope using the net material laying jig 1 will be described. <A> Laying of net material (FIGS. 1 and 2) In the present invention, the net material 3 is laid by expanding the net material 3 while driving the net material laying jig 1 into the slope 2. That is, slope 2
The leg portions 11 of the net material laying jig 1 are penetrated at regular intervals.
For the penetrating work, when the mountain portion 14 is hit, the penetrating work can be easily performed on the hard ground. When the net material laying jig 1 is driven in, the valley portion 15 is located on the downstream side of the mountain portion 14 as shown in FIG. Then, the rising portion 13 is inserted into the mesh of the mesh material 2 to form the valley portion 15
The wire rod 31 that constitutes the mesh member 3 is hooked on. as a result,
The net material 3 is supported at a certain distance from the slope 2 (intermediate position of the mortar layer), and the weight of the net material 3 is supported by the legs 11 via the bent portion 12, and the net material 3 is located downstream of the net material 3. The movement in the direction is restricted by the valley portion 15. The net material laying jig 1 may be placed before or after the net material 3 is deployed. Further, the anchor pins 4 are driven into the slope 2 in parallel with the driving of the net material laying jig 1 to restrain the net material 3 from rising. <B> Mortar spraying (Fig. 3) After the laying work of the net material 3 is completed, mortar is sprayed until the net material 3, the anchor pins, and the net material laying jig 1 are hidden, and the surface of the slope 2 is covered with the mortar layer 5 Cover with. Even if the worker walks on the net material 3 due to the spraying of the mortar, the net material laying jig 1 falls down because the net material laying jig 1 penetrates the slope 2 and the net material 3 meshes. There is no risk of falling off from the material laying jig 1. In this example, the case where the net material laying jig 1 is buried in the mortar layer 5 has been described. As described above.

[0008]

Since the present invention has been described above, the following effects can be obtained. <A> Conventionally, a measuring pin was used for the purpose of controlling the thickness of the mortar layer, and a large number of spacers were used to support the net material. In the present invention, by using the net material laying jig having both the inspection pin function and the spacer function, it is possible to omit members and reduce the number of steps. <B> Even if an operator rides on the net material, the net material laying jig does not easily fall, and the net material does not easily come off from the net material laying jig.

[Brief description of drawings]

[Fig. 1] Overall view of a net material laying jig

[Fig. 2] Slope cross section when laying net material

FIG. 3 is a sectional view of a slope when forming a mortar layer

Claims (1)

[Scope of utility model registration request] 1. A rod-shaped net material laying jig for laying net material at a constant distance from a slope, the straight leg portion penetrating the slope and a rising portion extending parallel to the leg portion. And a bent portion that connects the upper portion of the leg portion and the lower portion of the rising portion through a certain intersecting angle, and a trough portion that supports the net material is formed inside the bent portion and the bending portion of the rising portion. This is a jig for laying net material.