JP3063294U - Wire mesh frame - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a wire mesh frame that simplifies bar arrangement and securing work and improves the strength of the frame itself in the mesh frame method. SOLUTION: The wire mesh frame 1 has a cross section U.
It has a U-shaped curved surface. Wire mesh frame 1
Is used in a mesh frame construction method in which the frame is arranged in a grid on the slope 2 to be constructed, and mortar 7 is sprayed on the frame 1 to protect the slope 2. When the wire mesh frame 1 is press-formed, a concave portion 10 is formed along the longitudinal direction on the top of the U-shaped curved surface, and the concave portion 10 is configured to receive the reinforcing bar 6. Two concave portions may be provided in the longitudinal direction on both sides above the curved surface.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a wire mesh frame having a curved surface with a U-shaped cross section. More specifically, the frame is arranged in a grid on the slope to be constructed, and mortar is sprayed to protect the slope. It relates to a wire mesh frame used for the mesh frame method.

[0002]

[Prior art]

 In the conventional slope (slope) protection work, the construction method of the cast-in-place reinforced concrete method frame, which includes the processes of assembling the formwork, arranging the reinforcement, placing concrete, curing, and removing the mold, has been adopted. This construction method requires a complicated and time-consuming process, so the mesh frame method was developed.

In this mesh frame method, a wire mesh frame having a curved surface having a U-shaped cross section is arranged in a grid on the slope to be constructed, and mortar is sprayed on the frame to protect the slope. ing.

[0004] However, even in this mesh frame method, there is a problem that the lower portions of both legs of the wire mesh frame are expanded and deformed by a vertical load such as a mortar load. Therefore, a wire mesh frame (utility model registration No. 3034165) has been proposed, which is used for a method of connecting the lower portions of both legs of the wire mesh frame with tie rods to prevent expansion and deformation.

[0005]

[Problems to be solved by the invention]

 However, in the wire mesh frame used in the above-described mesh frame method, no consideration is given to simplifying the reinforcing process. In a normal mesh frame method, when using a medium-sized (for example, 200 × 170 mm cross section) wire mesh frame, pass one reinforcing bar in the upper position and two reinforcing bars in the lower position. I have. When a large-sized (for example, 300 × 260 mm cross section) wire mesh frame is used, two rebars are passed through the upper position and the lower position, respectively.

In the case of a medium-sized frame, the upper rebar is fixed to a frame or anchor material, and the lower rebar is fixed to a tie rod or a separately provided column. In the case of a large frame, separate supports are provided, and the upper and lower rebars are tied to each other and then covered with a wire mesh frame. As described above, in the conventional mesh frame method, a great deal of labor and time was required for the installation of the columns and the securing of the reinforcing bars.

An object of the present invention is to simplify the arrangement and securing of reinforcing bars and to improve the strength of the wire mesh frame itself in the mesh frame method.

[0008]

[Means for Solving the Problems]

 The wire mesh frame of the present invention is a mesh frame in which a wire mesh frame having a curved surface having a U-shaped cross section is arranged in a grid on a slope to be constructed, and mortar is sprayed on the frame to protect the slope. A wire mesh frame used in a construction method, wherein a concave portion is formed along the longitudinal direction along the top of the U-shaped curved surface when the wire mesh frame is press-formed, and a reinforcing bar is received in the concave portion. It is composed of

[0009] Alternatively, when the wire mesh frame is press-formed, two parallel recesses are formed along the longitudinal direction on both upper sides of the U-shaped curved surface, and a reinforcing bar is formed in each of the recesses. You may be comprised so that it may receive.

[0010]

[Embodiment of the invention]

 An embodiment of the wire mesh frame of the present invention will be described with reference to FIGS.

[0011]

First Embodiment First, a first embodiment of a mesh frame according to the present invention will be described with reference to FIGS.

A typical mesh frame method using the wire mesh frame 1 of the present invention will be described. This mesh frame method includes the following steps. a. Press-forming the wire mesh frame 1 to form a concave portion 10 along the longitudinal direction along the top of the U-shaped curved surface (FIG. 3A), b. Slope (slope) 2 (FIGS. 4 and 6), a first reinforcing bar 3 of a predetermined size is arranged in a grid pattern (FIG. 4). C. The wire mesh frame 1 is laid over the first reinforcing bar 3 (FIG. 3). (A)), placing on the slope 2 (FIG. 5), d. Fixing the wire mesh frame 1 to the slope 2 with the anchor material 4 (FIG. 5), e. Both legs of the wire mesh frame 1 Connecting the tie rods 5 (FIG. 5), f. Placing the second reinforcing bar 6 of a predetermined size on the concave portion 10 of the wire mesh frame 1 (FIG. 6), g. And the second rebar 6 is secured to the recess 10 of the wire mesh frame 1. H. Spray the mortar 7 on the wire mesh frame 1 (FIG. 6).

In this manner, the wire mesh frame 1 having a curved surface having a U-shaped cross section is arranged in a grid on the slope 2 to be constructed. Mortar 7 is sprayed onto the wire mesh frame 1 to protect the slope 2 after solidification and curing.

The wire mesh frame 1 is formed by a wire mesh 11 as shown in FIG. The wire mesh 11 has, for example, wires 111 having a diameter of 2.6 mm arranged in a grid pattern with a pitch of 40 mm, and is welded and cut into a width of 440 mm and a length of 1080 to 1380 mm.

The wire mesh 11 is formed into a U-shaped curved surface by press working. At the time of this press working, the concave portion 10 is also formed at the top of the curved surface. Representative dimensions (width × height) of the U-shaped cross section include 150 × 130, 200 × 170, 300 × 260 (unit: mm) and the like. The depth of the recess 10 is preferably about 20-40 mm, and the width is preferably about 15-25 mm. This is the size required to receive the second reinforcing bar 6 (about 10-20 mm in diameter).

The rebars 3 and 6 are arranged in a grid at a predetermined pitch as a pair of two rebars.

Since the wire mesh frame 1 is usually arranged first along the vertical direction (inclination direction) of the slope 2, the first reinforcing bars 3 are arranged in the horizontal direction of the slope 2 (direction perpendicular to the inclination direction). It is preferable to place them first. In this way, the reinforcing bars 3 in the vertical direction can be fastened to the tie rods 5 of the frame 1 arranged in the vertical direction first. However, which direction the reinforcing bars are to be placed first may be determined as appropriate based on the topography, geology, etc.

As shown in FIG. 5, the wire mesh frames 1 are arranged to cross each other vertically and horizontally. As described above, usually, the wire mesh frame 1 is arranged in series in the longitudinal direction of the slope 2 first, and then the wire mesh frame 1 is slightly bitten into the connecting portion to be connected. I do.

The second reinforcing bar 6 may be placed at the bottom in the recess 10 of the wire mesh frame 1 in either the vertical or horizontal direction. The other rebar will be placed on it. At that time, if the wire of the frame is in the way, a part of the wire may be cut. This does not affect the strength of the frame. As an alternative, as shown in FIG. 6, the wire mesh is set so that the other reinforcing bar 6 (the direction parallel to the plane of the paper) rides on the wire 111 of the frame 1 on which the other reinforcing bar 6 (the direction perpendicular to the plane of the paper) is mounted. 11 may be processed.

As shown in FIG. 6, the first reinforcing bar 3 is initially disposed on the slope 2 (indicated by a two-dot chain line), but is pulled up by human power and fixed to the tie rod 5. (Indicated by solid line). The horizontal first reinforcing bar 3 intersecting with the vertical first reinforcing bar 3 is naturally bent at the intersection as shown in FIG. 6, or the position of the tie rod 5 is adjusted up and down (not shown). It is preferable that unnatural deformation is not caused.

[0021]

Embodiment 2 As shown in FIG. 3B and FIG. 7, when the wire mesh frame 1a is press-formed, the above-mentioned recessed portion 10 is provided on both upper sides of the U-shaped curved surface in the longitudinal direction. , Two recesses 10a, 10a parallel to each other may be formed. The second reinforcing bar 6 is placed on each of the two recesses 10a, 10a (FIG. 7).

The dimensions of the recess 10a are the same as in the first embodiment. As shown in FIG. 3B, it is preferable to select the position of the recess 10a so that the wire 111 of the wire mesh frame 1a is near the entrance and the bottom of the recess 10a.

This embodiment is suitable for a large wire mesh frame.

[0024]

[Effect of the invention]

 According to the wire mesh frame of the present invention, the reinforcement and securing process in the mesh frame method are simplified, so that the construction period can be shortened, the construction cost can be reduced, and a concave portion is provided. As a result, the strength of the frame itself can be improved.

[Brief description of the drawings]

FIG. 1 is a perspective view of a wire mesh used as a material of a wire mesh frame.

FIG. 2 is a perspective view of the wire mesh frame of the present invention used in the mesh frame method.

3 is a front view of the wire mesh frame shown in FIGS. 2A and 2B; FIG.

FIG. 4 is a schematic partial perspective view showing a state where a reinforcing bar is arranged on a slope to be constructed.

FIG. 5 is a schematic partial perspective view showing a state where a wire mesh frame is put on the reinforcing bar of FIG. 4;

FIG. 6 is a schematic explanatory view showing an example of use of the first embodiment of the wire mesh frame of the present invention.

FIG. 7 is a schematic explanatory view showing a usage example of the second embodiment of the wire mesh frame of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1, 1a Wire mesh frame 2 Slope (slope) 3 First reinforcing bar 4 Anchor material 5 Tie rod 6 Second reinforcing bar 7 Mortar 10, 10a Depressed portion 11 Wire mesh 111 Wire

Claims (2)

[Utility model registration claims] 1. A mesh frame construction method in which a wire mesh frame having a curved surface having a U-shaped cross section is arranged in a grid on a slope to be constructed, and mortar is sprayed on the frame to protect the slope. A wire mesh frame, wherein, when the wire mesh frame is press-formed, a concave portion is formed along the longitudinal direction on the top of the U-shaped curved surface, and a reinforcing bar is received in the concave portion. A wire mesh frame characterized by: 2. A mesh frame construction method in which a wire mesh frame having a curved surface having a U-shaped cross section is arranged in a grid on a slope to be constructed, and mortar is sprayed on the frame to protect the slope. In the wire mesh frame, when the wire mesh frame is press-formed, two parallel concave portions are formed on both upper sides of the U-shaped curved surface along the longitudinal direction, and each of the concave portions is formed in the concave portion. A wire mesh frame configured to receive rebar.