JP3332309B2 - Cast-in-place method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cast-in-place method used for greening a slope such as a road or a constructed land.

[0002]

2. Description of the Related Art As an example of the cast-in-place method, 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, laying a reinforcing bar in a grid on this mesh and spraying mortar or concrete (hereinafter referred to as mortar, etc.) on the grid-shaped reinforcing 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 grid-like 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 the mortar or the like is sprayed as an on-site work in an unstable place on the slope. The thickness and width of the sprayed mortar and the like are likely to be non-uniform, requiring considerable skill to form a grid-shaped frame with a predetermined size, and avoiding variations in the size and strength of the grid-shaped frame. I couldn't do that.

[0004] The present invention has been made in consideration of the above-mentioned matter, and in a cast-in-place method using no formwork,
It is an object of the present invention to provide a cast-in-place method that can easily form a grid-like method frame made of mortar or the like having dimensions and strength as specified without requiring skill.

[0005]

In order to achieve the above object, the present invention comprises laying a net on a slope, arranging reinforcing bars in a grid on the net, and comprising a top portion and both legs.
Is bundling height 8～15Cm, the inspection survey lines material width 30 to 35 cm, a plurality, while arranged at appropriate intervals so as to cross over the rebar, the legs of said analyzing survey line material on the mesh-like body and then浮設holding the meshwork to a predetermined height, followed by the reinforcing bars arranged in a grid, in accordance with said analyzing survey line material, by spraying mortar or concrete,
The method is characterized in that a grid-like method frame made of mortar or concrete is formed on the slope.

In this case, the shape of the inspection wire as viewed from the front is
The shape may be any of a bow, a triangle, a trapezoid, and a polygon equal to or larger than a quadrangle. Also, a mesh binding member for binding the mesh is provided on both legs of the test wire, a holding member for floating and holding the reinforcing bar is erected between the legs of the test wire, and a reinforcing bar for binding the reinforcing bar. The binding member may be provided between the legs of the measurement wire. Furthermore, even if the lower ends of both legs of the inspection wire are bent to form a sunken prevention portion, or the members constituting the inspection wire may be made of rust-proof wire. Good. In addition, the vegetation layer may be formed by spraying a vegetation material obtained by mixing soil, organic material, water retention material and seeds in the grid frame, and the vegetation material may be formed in the grid frame. A vegetation bag filled in a coarse bag may be arranged.

The inspection wire 1 used in the present invention regulates the dimensions of the grid-like method frame 2 (see FIG. 3), that is, serves as a measure of the spray width and spray height of the mortar 6 and the like. The height is preferably 8 to 15 cm, and the width is preferably 30 to 35 cm. For example, as shown in FIGS. 2 and 3, the inspection wire 1 has a top 10, both legs 11, 11.
A predetermined height H (for example, 10 cm) and a width W
(For example, 30 cm). The inspection wire 1 is made of a wire having an appropriate thickness subjected to a rustproofing process.

When forming a grid-like method frame 2 made of a predetermined mortar or the like on the slope, the slope 3 is shaped and then, as shown in FIG. The body 4 is laid, and the reinforcing bars 5 are arranged on the mesh body 4 in a lattice shape. Then, as shown in FIG. 1 and FIG.
Are arranged at appropriate intervals so that the measurement wire 1 straddles the reinforcing bar 5, and the both legs 11, 11 of the measurement wire 1 are bound to the mesh body 4 as shown in FIG. The reticulated body 4 is floated and held at a predetermined height h, and then mortar 6 or the like is sprayed on the reinforcing bar 5 forming the lattice frame in accordance with the measurement wire 1.

In this manner, the mortar or the like 6 can be accurately blown to the reinforcing bar 5 so as to have a predetermined width and height. It can be reliably formed on the surface 3.

[0010]

1 to 3 show a first embodiment of a cast-in-place method according to the present invention. First, a test wire 1 used in the present invention will be described with reference to FIGS.
This will be described with reference to FIG. As shown in FIG. 3, the measurement wire 1 includes a top portion 10 and both leg portions 11, 11 and is configured in a semi-cylindrical shape having a predetermined height H (for example, 10 cm) and a width W (for example, 30 cm). ing. The inspection wire 1
It is made of a wire having an appropriate thickness (for example, a diameter of 4 mm) that has been subjected to rust prevention processing. The mesh 4 is bound by a wire 7 or the like to a position slightly above the lower end 11a of the leg 11 of the inspection wire 1, whereby the mesh 4 has a predetermined height h (for example, 3 mm).
４4 cm). And rebar 5 on slope 3
Side L (= 1 to 2 m) of the lattice frame formed by
In addition, the measuring wire 1 is arranged at an appropriate interval (for example, about 40 to 50 cm) so as to straddle the reinforcing bar 5.

Next, an example of a cast-in-place method using the inspection wire 1 will be described with reference to FIG.

[0012] For example, 5
After laying a mesh body 4 such as a rhombus wire mesh of about 6 cm,
Reinforcing bars 5 are arranged on the mesh body 4 in a grid pattern. In this case, the reinforcing bars 5 having a diameter of, for example, about 9 to 13 mm are arranged on the mesh body 4 in a lattice shape having one side of about 1 to 2 m. At the intersection of the reinforcing bars 5 (see FIG. 1), for example, a diameter of 16 m
m, an anchor 8 having a length of about 40 to 50 cm is driven while projecting about 7 to 8 cm from the slope 3, and the reinforcing bar 5 is bound to a protruding portion of the anchor 8 using an appropriate binding wire (not shown). On the other hand, FIG. 2, FIG.
As shown in FIG. 2, an anchor 9 having a diameter of, for example, 9 mm and a length of about 30 cm is driven in a state of protruding about 7 to 8 cm from the slope 3, and the reinforcing bar 5 is attached to the anchor 9 by using an appropriate binding wire (not shown). It binds to the protrusion 9a. Thereby, the rebar 5 can be held at a predetermined height T (for example, 5 cm).

[0013] Then, as shown in FIG.
Is placed on one side L (= 1 to 2 m) of the lattice frame formed by the reinforcing bar 5 on the slope 3 with an appropriate interval (for example, about 40 to 50 cm) so that the measuring wire 1 straddles the reinforcing bar 5. In addition, the reticulated body 4 is floated and held on the measurement wire 1 by using an appropriate spacer 16. In this case, the mesh 4
Is a measuring wire 1 having a diameter of 4 mm with a size of about 5 to 6 cm.
In a state where is inserted, the mesh 4 is floated to a position slightly above the lower end 11a of the leg 11 of the measurement wire 1 by using the spacer 16 and the mesh 4 is bound to the measurement wire 1 by the wire 7 or the like. Thereby, the net-like body 4 is floated and held at a position of a predetermined height h (for example, 3 to 4 cm) lower than the holding height T of the reinforcing bar 5, and it is possible to prevent the inspection wire 1 from falling down. The spacer 16 includes, for example, a "slope protection lath spacer" of Design Registration Application No. 4418 of 1988 of the applicant of the present invention, and Japanese Utility Model Publication No. 5-42 of the present applicant.
No. 118, “spacer pins” can be used.

The lattice-shaped reinforcing bar 5 configured as described above is provided with, for example, a low-slump mortar 6 having a water content of about 7 to 8%.
Is sprayed with 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 5, a plurality of inspection wire rods 1 serving as a guide of the spray width and the spray height of the mortar 6 are provided at intervals of about 40 to 50 cm. By simply spraying the mortar or the like 6 according to the measurement wire 1, the grid-like method frame 2 made of a mortar or the like having a predetermined dimension can be easily formed. That is, it is possible to form the grid-like method frame 2 made of mortar or the like having a lower end width of about 30 to 35 cm and a height of about 10 to 15 cm, and to reliably form the grid-like method frame 2 made of mortar or the like having a predetermined size and strength. You can. In FIG. 3, reference numeral 17 denotes a nozzle for spraying the mortar 6 or the like. Also, in FIG.
Reference numeral 18 denotes a covering member that prevents mortar or the like from being sprayed in areas other than the grid-shaped reinforcing bar 5 region.

As described above, soil, organic material, water retention material (soil improving material), etc., and seeds such as turfgrass, wild grass, shrubs, etc. are placed in the grid-like method frame 2 made of mortar or the like formed on the slope 3 as described above. Is sprayed using a power sprayer or the like to form a vegetation layer 14 (see FIG. 1). Alternatively, the vegetation material is filled in a coarse bag. By arranging vegetation bags (not shown), it is possible to introduce vegetation to rock slopes, which were previously impossible, to improve the landscape of the slopes and to improve the vegetation roots and stems. Greatly contribute to the permanent stability of the slope.
As described above, in the first embodiment, the shape of the grid-like method frame 2 made of mortar or the like can be measured by using the measurement wire 1.

The present invention is not limited to the above-described first embodiment, but can be implemented with various modifications. The embodiments are described below. FIG. 4 shows a second embodiment of the cast-in-place method according to the present invention, in which a net binding member 20 for binding a net is provided on both legs 11, 11 of the measurement wire 1. In this embodiment, the binding position of the mesh body, that is, the lower end 11a of the leg 11 of the inspection wire 1
A pin-type binding member 20 is provided at a slightly higher position along the direction in which the reinforcing bars are arranged, so that the binding of the net-like body can be performed firmly. The binding member 20 is, like the inspection wire 1,
It is made of a wire having an appropriate thickness (for example, a diameter of 4 mm) that has been subjected to rust prevention processing. The binding member 20 is connected to the inspection wire 1 by welding or soldering. As described above, in the second embodiment, the shape of the grid-like method frame 2 made of mortar or the like can be measured by using the measurement wire 1, and the net can be securely bound.

FIG. 5 shows a modification of the second embodiment. In this modified example, instead of the pin-type binding member 20 separate from the inspection wire 1, a portion corresponding to the binding position of the mesh of the inspection wire 1 is bent to thereby work along the direction in which the reinforcing bars are arranged. The binding member 21 is integrally formed.

FIG. 6 shows a holding member 2 for floatingly holding a reinforcing bar 5.
3 shows a third embodiment of the cast-in-place method of the present invention, in which 2 is installed between the legs 11, 11 of the inspection wire 1. In this embodiment, instead of using the anchor 9 as shown in FIGS. 2 and 3, the reinforcing bar 5 is bound to the holding member 22 by a wire 7 or the like, and the reinforcing bar 5 can be held at a predetermined height. That is, a wire such as a wire is used as the holding member 22, and both ends thereof are connected to the inspection wire 1 by welding or soldering. Thus, in the third embodiment,
The use of the inspection wire 1 allows the shape of the grid-shaped method frame 2 made of mortar or the like to be inspected and the rebar 5 to be easily positioned. Further, the holding member 22 is connected to the inspection wire 1
Since it is installed between the legs 11, 11, the legs 11, 1
1 can be prevented from spreading, for example, and the stability of the inspection wire 1 can be ensured. Therefore, the grid-like method frame 2 made of mortar or the like having a predetermined size and a predetermined strength can be reliably formed by the inspection wire 1.

FIG. 7 shows a modification of the third embodiment. In this modification, instead of the holding member 22, a holding member 24 having a constriction 23 at a reinforcing-bar holding position is used.
Is installed between the legs 11, 11 of the measurement wire 1. By holding the rebar in the constriction 23, the rebar can be easily positioned and the rebar holding function can be improved.

FIG. 8 shows a reinforcing bar binding member 25 for binding reinforcing bars.
This shows a fourth embodiment of the cast-in-place method according to the present invention, in which is installed between the legs 11, 11 of the measuring wire 1. In this embodiment, instead of using the anchor 9 as shown in FIGS. 2 and 3, the reinforcing bar is bound to the pin-type binding portion 26 of the reinforcing bar binding member 25 by wire or the like, and the reinforcing bar 5 can be held at a predetermined height. . That is, a wire such as a wire is used as the reinforcing bar binding member 25, and both ends thereof are connected to the inspection wire 1 by welding or soldering.
At a predetermined position of No. 5, a pin type binding member 26 is provided along the direction in which the reinforcing bars are arranged. Thus, in the fourth embodiment,
The use of the inspection wire 1 allows the shape of the grid-shaped method frame 2 made of mortar or the like to be inspected and the rebar 5 to be easily positioned. Further, since the reinforcing bar binding member 25 having the pin type binding member 26 for binding the reinforcing bars is provided between the legs 11, 11 of the inspection wire 1, deformation of the legs 11, 11 such as spreading is prevented. It is possible to secure the stability of the inspection wire 1. Therefore, the grid-like method frame 2 made of mortar or the like having a predetermined size and a predetermined strength can be reliably formed by the inspection wire 1.

FIG. 9 shows a modification of the fourth embodiment. In this modification, the reinforcing bar binding member 25
Instead of the separate pin-type binding member 26, a portion corresponding to the binding position of the reinforcing bar is bent in the reinforcing bar binding member 27 along the direction in which the reinforcing bars are arranged, whereby the binding member 28 is integrally formed.

FIG. 10 shows both legs 11, 11 of the inspection wire 1.
This shows a fifth embodiment of the cast-in-place method according to the present invention, in which the lower end of each is bent to form a sunken part 29. In this embodiment, both lower end portions of the inspection wire 1 are bent to an appropriate length (for example, about 5 cm), for example, in the direction in which the reinforcing bars are arranged, thereby forming the sinking prevention portions 29, 29. As described above, in the fifth embodiment, after the net is laid on the slope, the reinforcing bars are arranged in a grid on the net, and the inspection wire 1 having a predetermined height and width is replaced with the inspection wire 1. When arranging at appropriate intervals so as to straddle the rebar,
29 prevents the measuring wire 1 from sinking on the slope, which is particularly effective when the slope is embankment. Therefore, the use of the inspection wire 1 enables reliable inspection of the shape of the grid-like method frame 2 made of mortar or the like.

FIG. 11 shows that a holding member 31 having a constriction 30 at the rebar holding position is installed between the legs 11 and 11 of the test wire 1 and the constriction 30 holds the rebar, thereby facilitating the positioning of the rebar. And the function of holding the reinforcing bar can be improved, and the portion corresponding to the binding position of the mesh of the measurement wire 1 is bent in the arrangement direction of the reinforcing bar to form the binding member 32.
And the lower ends of both legs 11, 11 of the measuring wire 1 are bent in the direction in which the reinforcing bars are arranged to form anti-sinking parts 33, 33. 9 shows a sixth embodiment of the present invention. Thus the sixth
In the first embodiment, the use of the test wire 1 allows the shape of the grid-shaped method frame 2 made of mortar or the like to be measured, and the rebar can be easily positioned. Further, the legs 11,
11 can be prevented from spreading, for example, spreading.
Stability can be ensured. In addition, the binding of the net can be reliably performed, and the sunken parts 33, 33 prevent the measuring wire 1 from sinking on the slope. Therefore, the inspection wire 1 of the sixth embodiment provides the most preferable inspection wire 1, and the inspection wire 1 allows the grid-like method frame 2 made of mortar or the like having a predetermined size and a predetermined strength to be formed. It can be formed reliably.

In each of the above embodiments, the inspection wire 1
Has described an arcuate shape in a front view, but as a front view shape of the inspection wire 1, a triangle (see FIG. 12), a trapezoid (see FIG.
3), and the same effects as those of the above-described embodiments can be obtained by using any one of a quadrangle or more polygon (see FIG. 14).

[0025]

As described above, according to the present invention, after laying a mesh on the slope, reinforcing bars are arranged in a grid on the mesh, and are constituted by a top portion and both legs, and have a height of 8 mm. ~
15cm, the inspection survey lines material width 30 to 35 cm, a plurality, while arranged at appropriate intervals so as to cross over the rebar, the meshwork and bind the legs of said analyzing survey line material on the mesh-like body and浮設held at a predetermined height, followed by the reinforcing bars arranged in a grid, in accordance with said analyzing survey line material, by spraying mortar or concrete, motor <br/> Rutaru or concrete on the slopes Since a grid-like method frame made of mortar and the like is eliminated, a grid-type method frame made of mortar or the like having a prescribed size and strength having a predetermined covering thickness around a reinforcing bar is eliminated. It can be easily formed on the slope.

When the mesh binding members for binding the mesh are provided on both legs of the measuring wire, the shape of the grid-like frame made of mortar or the like can be measured by using the measuring wire. The reticulation can be securely bound.

Further, when a holding member for holding and holding the reinforcing bar is installed between the legs of the measuring wire, the shape of the grid-like frame made of mortar or the like can be measured by using the measuring wire. At the same time, the rebar can be easily positioned. Furthermore, since the holding member is installed between the legs of the inspection wire,
Deformation of the legs, for example, spreading, etc. can be prevented, and the stability of the inspection wire can be ensured. Therefore, a grid-like method frame made of mortar or the like having a predetermined size and a predetermined strength can be surely formed by using the measurement wire.

Further, when a reinforcing bar binding member for binding the reinforcing steel is installed between the legs of the measuring wire, the shape of the grid-like method frame made of mortar or the like can be measured by using the measuring wire. Reinforcing bars can be easily positioned. Furthermore, since the reinforcing bar binding member having the pin type binding member for binding the reinforcing bars is provided between the legs of the inspection wire, deformation of the legs, for example, spreading, can be prevented, and the stability of the inspection wire is reduced. Can be secured. Therefore, a grid-like method frame made of mortar or the like having a predetermined size and a predetermined strength can be surely formed by using the measurement wire.

Further, in the case where the sinking preventing portion is formed on the inspection wire, even if the slope is formed by embankment, the sinking of the inspection wire can be prevented, and the grid made of the mortar or the like can be prevented. The shape frame can be reliably formed to a predetermined size.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a first embodiment of the present invention.

FIG. 2 is a diagram showing a main part of the first embodiment.

FIG. 3 is a sectional view showing a main part of the first embodiment.

FIG. 4 is a perspective view showing a measuring wire used in a second embodiment of the present invention.

FIG. 5 is a perspective view showing a modified example of the inspection wire used in the second embodiment.

FIG. 6 is a perspective view showing a measuring wire used in a third embodiment of the present invention.

FIG. 7 is a perspective view showing a modification of the measurement wire used in the third embodiment.

FIG. 8 is a perspective view showing a measurement wire used in a fourth embodiment of the present invention.

FIG. 9 is a perspective view showing a modified example of the inspection wire used in the fourth embodiment.

FIG. 10 is a perspective view showing a measurement wire used in a fifth embodiment of the present invention.

FIG. 11 is a perspective view showing a measuring wire used in a sixth embodiment of the present invention.

FIG. 12 is a front view showing a modification of the shape of the inspection wire used in the present invention in a front view.

FIG. 13 is a front view showing another modification of the shape of the inspection wire used in the present invention in a front view.

FIG. 14 is a front view showing still another modification of the shape of the inspection wire used in the present invention in a front view.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Test wire, 2 ... Lattice method frame, 3 ... Slope, 4 ... Net, 5 ... Reinforcing bar, 6 ... Mortar or concrete, 7 ...
Wire, 11, 11: Both legs of the inspection wire.

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-6-240680 (JP, A) Registered utility model 3014435 (JP, U) Registered utility model 3007853 (JP, U)

Claims (8)

(57) [Claims] 1. After laying a mesh on a slope, reinforcing bars are arranged in a grid on the mesh, and are composed of a top portion and both legs.
Is bundling height 8～15Cm, the inspection survey lines material width 30 to 35 cm, a plurality, while arranged at appropriate intervals so as to cross over the rebar, the legs of said analyzing survey line material on the mesh-like body and then浮設holding the meshwork to a predetermined height, followed by the reinforcing bars arranged in a grid, in accordance with said analyzing survey line material, by spraying mortar or concrete,
A cast-in-place method, wherein a grid-like method frame made of mortar or concrete is formed on the slope. 2. A test wire having a bow shape, a triangle shape, a trapezoid shape in a front view,
The cast-in-place method according to claim 1, wherein the method is one of a quadrangle or a polygon. 3. The cast-in-place method according to claim 1, wherein a net-like binding member for binding the net-like body is provided on both legs of the inspection wire. 4. The cast-in-place method according to claim 1, wherein a holding member for floatingly holding the reinforcing bar is provided between the legs of the test wire. 5. The cast-in-place method according to claim 1, wherein a reinforcing bar binding member for binding the reinforcing bars is provided between the legs of the test wire. 6. The cast-in-place method frame method according to claim 1, wherein each of the lower ends of both legs of the measurement wire is bent to form a sink prevention portion. 7. The cast-in-place method according to any one of claims 1 to 6, wherein a member constituting the inspection wire is made of rust-proof wire. 8. A soil, an organic material, a water retention material and seeds are mixed in a grid-shaped frame formed on a slope by the cast-in-place frame method according to any one of claims 1 to 7. A cast-in-place method in which a vegetation material is sprayed to form a vegetation layer, or a vegetation bag in which the vegetation material is filled in a coarse bag is placed.