JPH1046593A - Detecting measuring frame to form slope frame and slope frame construction method using this - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide detecting measuring frames and a slope frame construction method by which a lattice-shaped slope frame which has a dimension and strength according to a standard and is composed of mortar or the like can be easily formed without requiring skill in a cast-in place slope frame construction method which does not use a form. SOLUTION: Detecting measuring frames K to form a slope frame regulate a dimension of a lattice-shaped slope frame 12 composed of mortar or concrete 11 by spraying the mortar or the concrete 11 on these lattice-shaped reinforcements by arranging the reinforcements in a lattice shape on this net-like body after the net-like body is laid on a face 5 of slope. In that case, they have first members 1 which are arranged at proper intervals in the lengthwise direction and have prescribed height and width and whose front view is a polygonal shape and second members 2 connect these first members 1 to each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art As one of construction methods for greening a slope such as a road or a constructed land, there is a "slope stabilization method" disclosed in Japanese Patent Publication No. 58-20338. In this method, after laying a mesh such as a wire mesh on the slope, a reinforcing bar is laid on the mesh in a grid pattern, and mortar or concrete (hereinafter referred to as mortar) is sprayed on the grid bar. Because it is designed to form a grid-like method frame consisting of etc., it has excellent workability and strength compared to the conventional prefabricated method and cast-in-place method frame method, etc. There is an advantage that there is.

[0003]

According to the current civil engineering standards, it is necessary that the thickness of a mortar or the like covering the lattice-shaped reinforcing bar (hereinafter referred to as “covering thickness”) be 5 cm or more from any surface of the reinforcing bar. Mandatory as a quality control standard to obtain a strong grid-like frame. However,
The cast-in-place method is a cast-in-place method that does not use a formwork, and spraying such as mortar is performed as an on-site work in an unstable place on the slope.
Spraying thickness and width of mortar or the like to the grid-shaped reinforcing bar are likely to be uneven, requiring considerable skill to form a grid-shaped frame with a predetermined size, and causing variations in the size and strength of the grid-shaped frame. That could not be avoided.

[0004] The present invention has been made in consideration of the above-mentioned matter, and in a cast-in-place 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 grid-like legal frame made of mortar or the like having dimensions and strengths as specified without requiring skill. The purpose is to provide the method of construction.

[0005]

Means for Solving the Problems To achieve the above object, the inspection frame of the present invention, after laying a net on a slope,
A reinforcing frame is arranged in a grid on the mesh body, and a mortar or concrete is sprayed on the grid-shaped reinforcing bar to control a dimension of the grid-shaped legal frame made of mortar or concrete. A first member having a predetermined height and width and provided at appropriate intervals in the length direction and having a polygonal shape in a front view, and a second member connecting the first members to each other;
And a member.

In the method of the present invention, after laying a mesh on the slope, reinforcing bars are arranged on the mesh in a grid pattern, and then the first member straddles the reinforcing bar. Mortar or concrete is sprayed with the inspection frame arranged.

[0007] The lower end of the first member may be bent to form a sunken part. Further, a holding member for floatingly holding the reinforcing bar may be provided on the inspection frame in a detachable manner.

[0008]

The inspection frame K used in the present invention is, for example, as shown in FIG. 4, a pair of first pentagonal front view pentagons having a predetermined height H (for example, 10 cm) and a width W (for example, 30 cm).
A member 1 and two second members 2 connecting these two first members 1 to each other, and both lower end portions of the first member 1 are bent, for example, in directions facing each other to prevent the sinking portion 3
Is formed. The first member 1 and the second member 2 constituting the inspection frame K are made of rust-preventive wire having an appropriate thickness, and they 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 grid-like method frame 11 made of a predetermined mortar or the like on the slope 4, after shaping the slope 4, as shown in FIG. The mesh 5 is laid, and the reinforcing bars 7 are arranged on the mesh 5 in a lattice shape. Then, as shown in FIG.
Are arranged at appropriate intervals so that the first member 1 straddles the reinforcing bar 7, and thereafter, as shown in FIG. 1 and FIG.
The mortar 10 is sprayed on the reinforcing bar 7 forming the lattice frame.

In this manner, the mortar or the like 10 can be accurately blown to the reinforcing bar 7 so that the mortar or the like 10 has a predetermined width and height. It can be reliably formed on the surface 4.

[0011]

1 to 4 show an example of an inspection frame according to the present invention and a method of construction using the inspection frame. First, FIG.
, K is an inspection frame, and this inspection frame K has 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 the 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, for example, appropriately rust-proofed (eg, 4 m in diameter)
m). Then, the first member 1 is bent so that its front view becomes a pentagon (preferably a left-right symmetric shape), and the upper side 1A, which is slightly inclined downward from the vertex to both left and right sides.
The ends of the legs 1B, 1B connected to 1A are bent, for example, in the directions facing each other to form the sink preventing portion 3. The length of the sunken part 3 is, for example, about 3 cm. Further, the second member 2 connects substantially intermediate positions of the legs 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 bar 7 on the slope 4 (see FIG. 1), and is, for example, about 30 cm.

Next, an example of the frame method according to the present invention will be described with reference to FIGS. A mesh member 5 such as a rhombic wire mesh having a mesh size of, for example, about 5 to 6 cm is laid on the preformed slope 4, and the 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).

On the mesh 5, for example, a diameter of 6 to 10
Reinforcing bars 7 of about mm are combined and arranged in a lattice shape with one side of about 1 to 2 m (see FIG. 1). An anchor 8 having a diameter of, for example, 16 mm and a length of about 40 to 50 cm is provided at the intersection of the reinforcing bars 7.
Is projected in a state of protruding from the slope 5 by about 7 to 8 cm, and the reinforcing bar 7 is bound to the projecting portion of the anchor 8 using an appropriate binding wire 9 (see FIGS. 2 and 3). An anchor (not shown) having a diameter of, for example, 9 mm and a length of about 30 cm is preferably driven into the slope 4 between the intersections, and the rebar 7 is preferably bound to the anchors at the intersections. .

Then, the inspection frame K is arranged on the mesh body 5 in such a manner that the first member 1 straddles the reinforcing bar 7 substantially at the center of each side of the grid frame made of the reinforcing bar 7 (FIGS. 1 and 2). reference). In this case, since the sunken part 3 is formed at the lower end of the first member 1, when the slope 4 is embankment, the inspection frame K is prevented from sinking from the slope 4.

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

A low-slump mortar 10 having, for example, a water content of about 7 to 8% is sprayed on the lattice-shaped reinforcing bar 7 constructed as described above by a civil engineering spraying machine (not shown) such as a mortar gun machine. In this case, on each side of the grid frame formed by the reinforcing bars 7, a detection frame K serving as a guide of the spray width and the spray height of the mortar 10 is provided. 10
By simply spraying, a grid-like frame 11 (hereinafter simply referred to as a grid-like frame) 11 made of mortar or the like having a predetermined size can be easily formed. That is, in this embodiment, the lower end width is 30 to 35 cm and the height is 10 to 15 cm.
Thus, it is possible to form the lattice-shaped method frame 11 having a predetermined size and to reliably form the lattice-shaped method frame 11 having a predetermined size and a predetermined strength. In FIGS. 1 and 3, reference numeral 12 denotes a nozzle for spraying 10 such as mortar.

In the lattice-shaped frame 11 formed on the slope 4 as described above, soil, organic material, water retention material (soil improving material), etc. and seeds such as turfgrass, wild grass, shrubs, flowers and the like are placed. The mixed vegetation material is sprayed using a power sprayer or the like to form a vegetation layer 13 (see FIG. 1), or alternatively, a vegetation bag in which the vegetation material is filled in a coarse bag. By arranging (not shown), it is possible to introduce vegetation to the rock slopes, etc., which has been impossible in the past. It greatly contributes to the permanent stability of the slope 4.

The present invention is not limited to the above embodiment, but can be implemented in various modifications. For example, as shown in FIG. 5, a holding member 14 having a U-shaped front view and having a hook portion 14a at both ends and a valley portion 14b at a substantially lower center end is used, and the hook portion 14a of the holding member 14 is a first member. 1 may be engaged with, for example, the upper side 1A, and the rebar 7 may be floated and held together with the net 5 by the valleys 14b. In this case, it is sufficient that the holding member 14 is made of a wire that has been subjected to rustproofing. Further, the dimensions of each member are set so that the holding member 14 covers the floating height of the reinforcing bar 7 and has 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-like method frame 11 is less than 5 cm, the mesh body 5 effectively acts as a material for preventing the vegetation material from flowing out as a spray base material.

As shown in FIG. 7, the reticulated body 5 may be floated and held by using an appropriate spacer 15 so that the covering thickness of the reinforcing bar 7 becomes a specified value. In addition, as the spacer 15, for example, Showa 63
"Laser spacer for slope protection" of Japanese Industrial Design Registration No. 4418 and "Spacer Pin" of Japanese Utility Model Publication No. 5-42118 can also be used.

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

As shown in FIG. 8, the shape of the first member in a front view may be a concave polygon. That is, the first
The member 16 is formed as a concave polygon (preferably a left-right symmetric shape) having one convex portion 16a and two concave portions 16b at the upper part. The inspection frame K configured as described above has the same effects as those of the above-described embodiments, and the same effect can be obtained by the method using the method.

In the inspection frame K of this embodiment, as shown in the figure, since the two rebars 8 can be stably held in the two recesses 16b, so-called horizontal double bar arrangement becomes possible. When the height of the protrusion 16a from the slope 4 is, for example, 10 cm, the height of the reinforcing bar 8 suspended and held by the two recesses 16b from the slope 4 may be set to 5 cm. It becomes possible. In the inspection frame K, the substantially central portion 16a of the upper portion of the first member 16 projects upward, and two concave portions 1 formed on both sides of the convex portion 16a.
6b is also formed with a convex portion 16c, so that when the mortar or the like 11 is sprayed, these convex portions 16a,
Spraying using 16c as a guide has the advantage that a grid-like method frame 12 having a predetermined covering thickness can be formed.

Further, also in the inspection frame K shown in FIG. 8, the holding member 14 as shown in FIG. 6 or 7 can be used, so that the rebar 7 can be held more and stably. Therefore, a wide grid-like method frame can be formed.

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 anti-sinking portion 3, the lower end portion may be straight without being bent. Needless to say.

In any of the above 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 at a high position. Further, three or more first members 1 and 16 may be provided. And then
The inspection frame K may be formed of plastic by integral molding.

Further, the reinforcing bar 7 provided on one side of the lattice frame is not necessarily one, but may be a plurality of bars. In this case, a fourth longer anchor is provided near the intersection of the reinforcing bars 7 on the side surface 4.
, And the reinforcing bars may be supported and bound in a cross-girder shape, and may be stacked one or several steps.

[0029]

The present invention has been described above. The inspection frame of the present invention has a simple structure, can be manufactured easily and inexpensively, and is easy to handle. Especially,
Since the inspection frame according to the second aspect also has the function of holding and reinforcing the reinforcing bar, it is not necessary to separately provide a member for holding the reinforcing bar. In the method method using the inspection frame, the unevenness of spraying of mortar or the like is eliminated, and a grid-like method frame made of mortar or the like having a predetermined covering thickness around a reinforcing bar and having dimensions and strength as specified can be easily obtained. Can be formed on the slope.

According to the second aspect of the present invention,
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 to a predetermined size.

Further, according to the third aspect of the present invention,
The rebar holding position is more reliably performed.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating an example of a cast-in-place method according to the present invention.

FIG. 2 is a view showing a main part of the method.

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

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

FIG. 5 is a sectional view showing another example of the inspection frame of the present invention.

FIG. 6 is a cross-sectional view showing another mode of floating the reinforcing bars by the inspection frame shown in FIG. 5;

FIG. 7 is a cross-sectional view showing another floating state of the net.

FIG. 8 is a sectional view showing another example of the inspection frame of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... 1st member, 2 ... 2nd member, 3 ... Sink 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.

Claims (4)

[Claims] After laying a mesh on a slope, reinforcing bars are arranged on the mesh in a grid pattern, and mortar or concrete is sprayed on the grid reinforcing bar to measure the size of a grid-shaped frame made of mortar or concrete. Is a first frame of a polygonal shape in a front view having a predetermined height and width provided at appropriate intervals in the length direction.
An inspection frame for forming a legal frame, comprising: a member; and a second member connecting the first members to each other. 2. The inspection frame for forming a legal frame according to claim 1, wherein a lower end portion 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 for constructing a frame using the inspection frame according to any one of claims 1 to 3, wherein a net is laid on a slope, and reinforcing bars are arranged in a grid on the net. Then, mortar or concrete is sprayed in a state where the inspection frame is arranged so that the first member straddles the rebar.