JP3527059B2 - Inspection frame for forming legal frame and legal frame construction method using it - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inspection frame for forming a legal frame and a legal frame construction method using the same.

[0002]

2. Description of the Related Art As one of the construction methods for greening the slopes of roads and land, there is the "slope stabilization method" disclosed in Japanese Patent Publication No. 58-20338. In this method, after laying a net-like body such as a wire net on the slope, laying reinforcing bars on this net-like body in a grid pattern, spraying mortar or concrete (hereinafter referred to as mortar etc.) on this grid-like reinforcing bar and mortar Since it is designed to form a grid-shaped method frame made of, etc., it is superior in workability and strength compared to the conventional prefabricated type and in-situ method frame construction method, and it uses less equipment and is cheaper. There is an advantage.

[0003]

By the way, according to the current civil engineering standards, it is required that the thickness of the mortar covering the grid-like reinforcing bars (which is called the covering thickness) be 5 cm or more from any surface of the reinforcing bars. Mandatory as a quality control standard for obtaining a strong grid-like framework. However,
The cast-in-place method frame method is a cast-in-place method frame method that does not use a formwork, and the spraying of mortar and the like is performed as an on-site work in an unstable place on the slope,
The thickness and width of the mortar sprayed on the grid-shaped reinforcing bars tend to be non-uniform, which requires considerable skill to form a grid-shaped method frame of a predetermined size, and the grid-shaped method frame also varies in size and strength. I couldn't avoid it.

The present invention has been made in consideration of the above-mentioned matters, and in the in-situ casting method using no formwork,
An inspection frame for forming a legal frame (hereinafter simply referred to as an inspection frame) that can easily form a lattice-shaped method frame made of mortar having dimensions and strength according to the standard without requiring skill. The purpose is to provide the legal framework method to be used.

[0005]

In order to achieve the above object, the inspection frame of the present invention has a structure in which a net-like body is laid on the slope,
Rebar is arranged in a grid pattern on the mesh body, using a mold which Ru spraying mortar or concrete to the grid-like reinforcing bar
One of the lattice frames formed by reinforcing bars , which is an inspection frame for forming a legal frame that regulates the size of a lattice-like frame made of mortar or concrete in the in-situ method
A pair of first members having a polygonal shape in a front view and having a predetermined height and width, which are shorter than the length of the sides of the lattice frame and are provided at appropriate intervals in the length direction of the lattice frame, and these two first members. It is characterized in that it is provided with two second members for connecting the two.

According to the method of frame construction of the present invention, after the net-like body is laid on the slope, the reinforcing bars are arranged on the net-like body in a grid pattern, and then the first member straddles the reinforcing bar. It is characterized in that mortar or concrete is sprayed while the inspection frame is arranged.

The lower end portion of the first member may be bent to form a sink preventing portion. Further, a holding member for floatingly holding the reinforcing bar may be detachably provided on the inspection frame.

[0008]

As shown in FIG. 4, for example, the inspection frame K used in the present invention has a pair of first pentagonal shapes having a predetermined height H (for example, 10 cm) and width W (for example, 30 cm).
It is composed of a member 1 and two second members 2 connecting these two first members 1, and both lower end portions of the first member 1 are bent, for example, in directions facing each other, and a sinking prevention portion 3 is formed.
Is formed. The 1st member 1 and the 2nd member 2 which comprise this inspection frame K consist of the wire of the appropriate thickness which gave the rustproof process, and these 1 and 2 are connected by welding or soldering. Therefore, the structure of the inspection frame K is simple, its manufacture is easy, and it is inexpensive.

When forming the lattice-shaped method frame 11 made of a predetermined mortar or the like on the slope 4, the slope 4 is shaped, and then, as shown in FIG. The reticulated body 5 is laid, and the reinforcing bars 7 are arranged on the reticulated body 5 in a grid pattern. Then, as shown in FIG. 2, the inspection frame K
Are arranged at appropriate intervals so that the first member 1 straddles the reinforcing bar 7, and then, as shown in FIGS. 1 and 3,
Mortar 10 is sprayed onto the reinforcing bars 7 forming the lattice frame.

By doing so, the mortar or the like 10 can be accurately sprayed onto the reinforcing bar 7 so as to have a predetermined width and height, and the grid-like method frame 11 made of mortar or the like having a predetermined strength is formed. The surface 4 can be reliably formed.

[0011]

1 to 4 show an example of an inspection frame and a method frame construction method using the same according to the present invention. First, FIG.
, K is an inspection frame, and this inspection frame K is a pair of first members 1 having a predetermined height H (for example, 10 cm) and a width W (for example, 30 cm) and having a pentagonal shape in a front view, and these two first members. It is composed of two linear second members 2 connecting one member 1 to each other.

That is, the first member 1 and the second member 2
Is an appropriate thickness (for example, a diameter of 4 m
m) wire. The first member 1 is bent so as to have a pentagonal shape (preferably left-right symmetric shape) when viewed from the front, and the upper side 1A slightly inclined downward from the apex to the left and right sides,
The end portions of the leg portions 1B and 1B connected to 1A are bent, for example, in directions facing each other to form a sunken portion 3. The length of the sunken portion 3 is, for example, about 3 cm. The second member 2 connects the substantially intermediate positions of the leg portions 1B of the first member 1 and is fixed to the first member 1 by welding or soldering. The length L of the second member 2 is shorter than the length of one side of the lattice frame formed by the reinforcing bars 7 on the slope 4 (see FIG. 1), for example, about 30 cm.

Next, an example of the method frame method of the present invention will be described with reference to FIGS. A mesh 5 such as a diamond wire mesh having a mesh size of about 5 to 6 cm is laid on the pre-shaped slope 4 and anchors 6 are driven into the slope 4 at appropriate intervals to fix the mesh 5 to the slope 4. (See FIGS. 2 and 3).

A diameter of, for example, 6 to 10 is provided on the mesh body 5.
Reinforcing bars 7 having a size of about mm are combined and arranged in a lattice shape having one side of about 1 to 2 m (see FIG. 1). An anchor 8 having a diameter of 16 mm and a length of about 40 to 50 cm is provided at the intersection of the reinforcing bars 7.
Is driven in a state in which it projects from the slope 5 by about 7 to 8 cm, and the reinforcing bars 7 are bound to the projecting portion of the anchor 8 by using an appropriate binding wire 9 (see FIGS. 2 and 3). It should be noted that an anchor (not shown) having a diameter of 9 mm and a length of about 30 cm may be driven into the slope 4 between the intersections, and the reinforcing bars 7 may be bound to the anchors in the same manner as at the intersections. .

Then, the inspection frame K is arranged on the mesh body 5 so that the first member 1 straddles the reinforcing bar 7 at approximately the center of each side of the lattice frame composed of the reinforcing bar 7 (FIGS. 1 and 2). reference). In this case, since the sinking prevention portion 3 is formed at the lower end of the first member 1, the inspection frame K is prevented from sinking from the slope 4 when the slope 4 is embankment.

Since the inspection frame K serves as a guide for the spraying width and spraying height of the mortar 10 and the like, it is sufficient to provide at least one on each side of the lattice frame,
When the length of the side is 1 to 2 m and the length L of the inspection frame K is 30 cm as in this embodiment, it is only necessary to provide one inspection frame K on each side. Further, when the length of the side becomes larger, two or more inspection frames K having the above dimensions may be provided, but the length L of the inspection frame K is made larger (for example, 1.3 to
(About 1.5 m) may be set.

On the grid-shaped reinforcing bar 7 constructed as described above, for example, a low-slump mortar 10 having a water content of about 7 to 8% is sprayed by a civil engineering sprayer (not shown) such as a mortar gun machine. In this case, since each side of the lattice frame formed by the reinforcing bars 7 is provided with an inspection frame K that serves as a guide for the spraying width and the spraying height of the mortar 10 and the like, the mortar and the like are in accordance with the inspection frame K. 10
It is possible to easily form a lattice-shaped method frame (hereinafter, simply referred to as a lattice-shaped method frame) 11 made of mortar or the like having a predetermined size by spraying. That is, in this embodiment, the lower end width is 30 to 35 cm and the height is 10 to 15 cm.
The grid-shaped method frame 11 having a certain degree can be formed, and the grid-shaped method frame 11 having a predetermined size and a predetermined strength can be reliably formed. 1 and 3, reference numeral 12 is a nozzle for spraying 10 such as mortar.

Soil, organic material, water retaining material (soil conditioner), etc. and seeds of turfgrass, wild grass, shrubs, flowers, etc. are placed in the lattice-shaped method frame 11 formed on the slope 4 as described above. The mixed vegetation material is sprayed using a power spraying machine or the like to form the vegetation layer 13 (see FIG. 1), or, instead of this, a vegetation bag in which a coarse bag is filled with the vegetation material. By arranging (not shown), it becomes possible to introduce vegetation even on rock slopes that were previously impossible, improving the landscape of slope 4 and roots and stems of vegetation. It largely contributes to the permanent stability of slope 4.

The present invention is not limited to the above-mentioned embodiments, but can be modified in various ways. For example, as shown in FIG. 5, a U-shaped holding member 14 in a front view having hook portions 14a at both ends and a valley portion 14b at substantially the center lower end is used, and the hook portion 14a of the holding member 14 is a first member. It is also possible to engage with the upper side 1A of 1 and to hold the reinforcing bar 7 together with the mesh body 5 in a floating manner by the valley portion 14b. In this case, the holding member 14 may be made of rust-proof wire, and the size of each member should be such that the floating height of the reinforcing bar 7 is covered and the thickness becomes a specified value (5 cm or more). It is desirable to set.

FIG. 6 shows an embodiment in which only the reinforcing bar 7 is floated and held in the embodiment of FIG. In this case, when the vegetation layer 13 in the grid-shaped method frame 11 is less than 5 cm, the mesh 5 effectively acts as a runoff prevention material for the vegetation material as the spraying base material.

Further, as shown in FIG. 7, an appropriate spacer 15 may be used to suspend and hold the mesh body 5 so that the covering thickness of the reinforcing bar 7 becomes a specified value. The spacer 15 may be, for example, the Showa 63
For example, “Lath spacer for slope protection” of Japanese Design Registration Application No. 4418 and “Spacer pin” of Japanese Utility Model Publication No. 5-42118 can be used.

In any of the above embodiments,
Although the shape of the first member 1 forming the inspection frame K in the front view is a pentagon, the shape is not limited to this, and may be a polygon having a heptagon or more. In this case, it is preferably symmetrical.

Further, as shown in FIG. 8, the front view shape of the first member may be a concave polygon. That is, the first
The member 16 is formed in a concave polygonal shape (a bilaterally symmetrical shape is preferable) having one convex portion 16a and two concave portions 16b on the upper portion. The inspection frame K configured in this way also has the same effects as those of the above-mentioned respective embodiments, and the same effect can be obtained in the legal frame construction method using the same.

In the inspection frame K of this embodiment, as shown in the drawing, the two rebars 8 can be stably held in the two recesses 16b, so that a so-called horizontal double rebar is possible. When the height of the convex portion 16a from the slope 4 is, for example, 10 cm, the height of the reinforcing bar 8 floated and held by the two concave portions 16b from the slope 4 can be set to be 5 cm. It will be possible. Further, in this inspection frame K, a substantially central portion 16a of the upper portion of the first member 16 projects upward, and further, two concave portions 1 formed on both sides of the convex portion 16a.
Since the convex portion 16c is also formed on the other side of 6b, when the mortar 11 or the like is sprayed, these convex portions 16a,
If 16c is sprayed as a guide, there is an advantage that the lattice-shaped method frame 12 having a predetermined covering thickness can be formed.

Further, in the inspection frame K shown in FIG. 8 as well, the holding member 14 as shown in FIG. 6 or 7 can be used, and more reinforcing bars 7 can be held. Therefore, it is possible to form a wide lattice-shaped frame.

In any of the above embodiments,
Although the lower end portions of the first members 1 and 16 in the inspection frame K are bent to form the sunken portion 3, the lower end portion may be straight without bending. Needless to say.

Further, in any of the above-mentioned embodiments, the installation height of the second member 2 in the inspection frame K is arbitrary,
When it is desired to secure the covering thickness of the reinforcing bar 7, the first members 1, 16
It is desirable to fix it at a high position. Furthermore, three or more first members 1 and 16 may be provided. And then
The inspection frame K may be integrally formed of plastic.

Further, the number of the reinforcing bars 7 provided on one side of the lattice frame is not limited to one, and in this case, four long anchors are provided near the intersection of the reinforcing bars 7 and the slope 4
Alternatively, the reinforcing bars may be supported and bound in a cross beam shape, and the reinforcing bars may be stacked in one or several steps.

[0029]

The present invention is as described above, and the inspection frame of the present invention has a simple structure, can be manufactured easily and inexpensively, and is easy to handle. In particular,
In the inspection frame according to the third aspect, since it also has a function of holding the reinforcing bars in a floating state, it is not necessary to separately provide a reinforcing bar holding member. And in the method frame method using this inspection frame, there is no uneven spraying of mortar and the like, and a grid-like method frame made of mortar and the like having a specified size and strength with a predetermined covering thickness around the reinforcing bar is easy. It can be formed on the slope.

According to the invention of claim 2,
Even when the slope is formed by embankment, it is possible to prevent the inspection frame from sinking, and it is possible to reliably form the grid-shaped slope frame made of the mortar or the like in a predetermined size.

Further, according to the invention of claim 3,
The holding position of the reinforcing bar is performed more reliably.

[Brief description of drawings]

FIG. 1 is a diagram showing an example of a cast-in-place method frame construction method of the present invention.

FIG. 2 is a diagram showing a main part of the construction method.

FIG. 3 is a front view showing a main part of the construction method.

FIG. 4 is a perspective view showing an example of the inspection frame of the present invention.

[Figure 5]
It is sectional drawing which shows the other example of the inspection frame of this invention.

[Figure 6]
It is sectional drawing which shows the other floating mode of the reinforcing bar by the inspection frame shown in FIG.

[Figure 7]
It is sectional drawing which shows the other floating mode of a mesh body.

[Figure 8]
It is sectional drawing which shows the other example of the inspection frame of this invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... 1st member, 2 ... 2nd member, 3 ... Sinking prevention part, 4 ... Slope, 5 ... Reticulated body, 7 ... Reinforcing bar, 10 ... Mortar or concrete, 11 ... Lattice method frame, 14 ... Holding member, 16 ...
1st member, 16a ... convex part, 16b ... concave part, K ... inspection frame.

Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) E02D 17/20 104

Claims (4)

(57) [Claims] After laying claim: 1. A method surface reticulated body, this Rebar on meshwork arranged in a grid pattern, scene punching without using the mold of Ru spraying mortar or concrete to the grid-like reinforcing bar
The length of one side of the grid frame formed by the reinforcing bar, which is the inspection frame for forming the grid frame that regulates the size of the grid-like frame made of mortar or concrete in the construction method.
Is shorter than the pair of first members each having a polygonal shape in a front view and having a predetermined height and width, which are provided at appropriate intervals in the length direction of the lattice frame, and connect these two first members together. An inspection frame for forming a legal frame, comprising two second members. 2. The inspection frame for forming a legal frame according to claim 1, wherein the lower end of the first member is bent to form a sunken portion. 3. The inspection frame for forming a legal frame according to claim 1, wherein a holding member for floatingly holding the reinforcing bar is detachably provided on the first member. 4. A method frame method using the inspection frame according to any one of claims 1 to 3, wherein a reticulated body is laid on the slope, and then the reinforcing bars are arranged in a grid on the reticulated body. After that, a mortar or concrete is sprayed in a state in which the first member is arranged so as to straddle the reinforcing bars and the mortar or concrete is sprayed.