JP3443040B2 - Concrete sprayed one-sided lath-filled frame method and one-sided lath folding type reinforcing bar support used in the 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 concrete spraying method frame method for reinforcing the surface of a cut slope to prevent the slope from collapsing, and an internal reinforcement forming member used in the method frame method. Regarding

[0002]

2. Description of the Related Art In order to protect the slope, various frame construction methods using concrete spray have been carried out. Recently, the number of construction contracts has decreased, and competition for contracts among contractors has intensified. Moreover, despite the demand for high performance, the order price is severely controlled.

In general, as shown in FIG. 7 (when one metal horizontal frame straight line is provided on one side) and FIG. 8 (when four metal horizontal frame straight lines are provided on one side), a central recessed lower open curved shape is formed. Fix the metal wire with a string-shaped horizontal bar, place a plurality of curved metal wires at intervals so that the horizontal bars are parallel, and fix the metal horizontal frame straight lines on both sides of each curved metal wire. Using a self-supporting rebar support, most of the rebar supports are connected in series and crossed in a grid pattern at regular intervals in the vertical and horizontal directions, and the rebar is supported and fixed in the central recessed part and the horizontal bar part, and the surroundings are kamaboko. Concrete is sprayed onto the mold to form a grid-shaped frame. Although this structure is relatively inexpensive in terms of price, it has a drawback in that the sprayed concrete is linearly supported inside the legal frame, and thus the entire legal frame is inferior in strength.

Therefore, in order to increase the strength of the legal frame, as shown in FIG. 6, a reinforcing bar support having parallel metal lath face bodies on both sides of the reinforcing bar support shaft is used, and concrete is sprayed onto the reinforcing bar support. It is being constructed. In the case of this structure, since the sprayed concrete is supported by wire (reinforcing rod support shaft) and surface (metal lath surface), excellent strength can be obtained over the entire legal frame, but the material cost of the members used In addition, the cost of construction labor could not be easily reduced, and price competition could not meet the demand.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and concrete spraying capable of significantly reducing construction cost without impairing excellent performance such as strength and durability as a concrete slope frame. A frame method and a reinforcing bar supporting member suitable for use in the method.

[0006]

In order to solve the above-mentioned problems, the present invention is a concrete spraying method frame construction method in which a slope is formed in a vertical and horizontal lattice pattern. A lath-folding type reinforcing bar support A is provided which is provided with a crossing part 6 and a rebar supporting frame 5 having a self-supporting rod leg 7 on the outer side with respect to the pivoting part 4 so as to be pivotable. use.

Then, the reinforcing bar support A is placed directly on the slope 1 or at a predetermined position for forming a frame on a lath net 2 stretched on the slope 1, and in the vertical frame 11a, the lath wall surface body 3 is vertically arranged. The lath wall surface bodies 3 are brought to one side of the legal frame 11a, and the lath wall surface bodies 3 are brought to the lower side of the slant of the lateral legal frame 11b in the lateral diagonal frame 11b portion so as to be arranged so that the entire legal frame becomes a lattice shape. To do. Then, each of the reinforcing bar support frames 5 is opened and the self-supporting rod leg 7 is placed on the slope 1 or stabbed to make the reinforcing bar support A self-supporting.

Then, the reinforcing bars 8 are inserted in contact with the intersections 6 of the reinforcing bar support frame 5, and the reinforcing bars 8 are fixed to the respective intersections 6 by fixing members 9. Then, the reinforcing bar support A and the reinforcing bar 8 are piled up so that the whole is filled up with the concrete 1
This is a concrete frame construction method in which one side is lathed by spraying 0.

Further, in the above structure, the end portion 12 of the upper horizontal support frame 5a is bent upward so as to come close to the upper corner of the method frame raised by spraying,
A contact line 13 is stretched on the bent upper end portion 12.

Further, the one-sided lath-folding type rebar support A used in the concrete spraying one-side lath-containing method frame construction of each of the above-mentioned constructions has the upper and lower portions thereof laterally spaced on one surface 3a of the horizontally long lath wall surface body 3. Is provided with a pivotal attachment portion 4, and the base portions 5d of the upper and lower two horizontal support frame bodies 5a and 5b are pivotably supported on the pivotal attachment portions 4 and the horizontal support frame bodies 5a, 5a,
The intermediate portion of 5b is crossed with the vertical support frame 5c at the rebar arranging planned position and connected and fixed.

Then, when the lath wall surface body 3 is erected at the outer end of the vertical support frame body 5c or the horizontal support frame bodies 5a, 5b or at the outer end gall side, the lower end of the lath wall surface body 3 is lower than A self-supporting rod leg 7 is provided so as to reach a low position.

Further, in the reinforcing bar support A having the above-mentioned structure, the lath wall surface body 3 is a wire mesh, a metal grid, a plywood, a synthetic resin plate or a cardboard face material.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. First, a concrete spraying method frame construction method of forming a vertical and horizontal lattice on the slope of the present invention will be described. As shown in FIG. 1, the structure is in a concrete spraying method frame construction method in which vertical and horizontal lattices are formed on the slope. Then, as shown in FIGS. 3, 4 and 5, a pivot portion 4 is provided on one surface 3a of the lath wall surface body 3, and an intersection portion 6 is provided with respect to the pivot portion 4 and is self-standing toward the outer side. A lath-folding type rebar support A, which is formed by pivotally supporting a rebar support frame 5 having rod legs 7, is used.

Then, the reinforcing bar support A is directly provided on the slope 1 or, as shown in FIG. 1, at a predetermined position for forming a frame on a lath net 2 stretched on the slope 1, at a vertical slope 11a portion. Is to move the lath wall surface body 3 to one side of the vertical frame 11a, and in the horizontal horizontal frame 11b portion, to move the lath wall surface body 3 to the lower side of the inclination of the horizontal horizontal frame 11b, and arrange them to form a legal frame. Make the whole into a grid. Then, each rebar support frame 5 is opened and the self-supporting rod leg 7 is placed on the slope 1 (not shown) or stabbed (shown in FIGS. 1 and 2) to make the rebar support A self-supporting. The reason that the lath wall surface body 3 is moved to the lower side of the slope of the horizontal frame 11b is to receive the sprayed concrete and make it easy to build up inside.

Then, the reinforcing bars 8 are inserted so as to contact the crossing portions 6 of the reinforcing bar supporting frame 5 so as to connect the reinforcing bar supports A, and the reinforcing bars 8 are fixed to the respective crossing portions 6 by a fixing member 9 such as wire. Fix it. Then, the reinforcing bar support A and the reinforcing bar 8 are piled up so as to be entirely buried and the concrete 10 is sprayed to form a legal frame.

Further, the end portion 12 of the upper horizontal support frame 5a is bent upward so as to come close to the upper corner of the method frame raised by spraying, and a contact line 13 is stretched on the bent upper end portion 12. To do.

Next, the one-sided lath-folding type rebar support A used in the concrete spraying one-sided lath-containing method frame construction method of each of the above constructions will be described. The reinforcing bar support A is shown in FIG.
As shown in FIGS. 4 and 5, on one side 3a of the horizontally long lath wall surface body 3, pivotal attachment portions 4 are provided at upper and lower portions thereof at intervals in the lateral direction. Then, the bases 5d of the upper and lower horizontal support frames 5a and 5b are pivotally supported on the pivotally-attached portions 4 and the intermediate portions of the horizontal support frames 5a and 5b are vertically supported by the vertical support frame 5c. Cross and fix the reinforcing bars at the planned positions.

The intersections 6 are provided according to the number of reinforcing bars 8 used. For example, in the case of a legal frame structure using two upper and lower reinforcing bars 8, as shown in FIG. 4, an intermediate vertical supporting frame body 5c is fixed to two upper and lower horizontal supporting frame bodies 5a and 5b. To form two intersections 6. Further, for example, in the case of a legal frame structure using four reinforcing bars 8 in upper and lower two, as shown in FIG. 3 and FIG. 6 is formed.

When the lath wall surface body 3 is erected at the outer end of the vertical support frame body 5c or the horizontal support frame bodies 5a, 5b or at a portion near the outer end bile side, the lower end is lower than the bottom side of the lath wall surface body 3. The self-supporting rod leg 7 is provided so as to reach the lower position.

Furthermore, the lath wall surface body 3 of the reinforcing bar support A
The wire mesh, metal grid, plywood, synthetic resin plate or cardboard face material can be used.

If soil for growing plants is inserted between the legal frames 1, a natural landscape camouflaged by the plants can be realized by planting plants such as grass and trees or sowing seeds.

[0022]

EFFECTS OF THE INVENTION Conventionally, the conventional kamaboko-type concrete spraying method using a reinforcing bar support in which downward-opening curved metal wires are connected by metal horizontal straight lines has a strength drawback,
Further, the conventional concrete spraying method using the reinforcing bar support in which the metal lath surface bodies are provided in parallel on both sides of the reinforcing bar support shaft has a difficulty in cost.

However, since the present invention is as described above, the sprayed concrete is linearly (reinforcing bar support frame 5 and reinforcing bar 8) and planarly (lath wall surface body) supported by the reinforcing bar support A, and By increasing the strength and at the same time inserting the lath wall body only on one side instead of on both sides, it has become possible to reduce costs such as the material cost and construction labor cost of the reinforcing bar support A used for the legal frame. In addition, it is now possible to meet demanding construction price requirements at low cost without degrading quality and performance.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing a method frame structure by a method frame method of the present invention.

FIG. 2 is an enlarged vertical sectional side view showing a method frame structure by a method frame method of the present invention.

FIG. 3 is a perspective view showing a type rebar support of the present invention.

FIG. 4 is a perspective view showing a reinforcing bar support of another embodiment.

FIG. 5 is a perspective view showing a reinforcing bar support of another embodiment.

FIG. 6 is a perspective view showing a structure of a reinforcing bar support in (a) and a method frame in (b) of the related art.

FIG. 7 is a perspective view showing another conventional (a) structure of a reinforcing bar support and (b) a structure of a legal frame.

FIG. 8 is a perspective view showing another conventional reinforcing bar support.

[Explanation of symbols]

1 slope 2 lath net 3 Lath wall body 3a One side of lath wall body 4 pivot 5 Reinforcing bar support frame Horizontal support frame on 5a 5b horizontal support frame below 5c Vertical support frame 5d Base of upper and lower horizontal support frames 6 intersection 7 Independent sticks 8 rebar 9 fixing member 10 concrete 11a Vertical frame 11b Horizontal frame 12 Bending upper end of the horizontal support frame on 13 hit line A Reinforcing bar support

Claims (4)

(57) [Claims] 1. A concrete spraying frame method for forming a vertical and horizontal lattice on a slope, wherein a pivotal portion (4) is provided on one surface of a lath wall surface body (3), and the pivotal portion (4) is attached to the pivotal portion (4). A lath-folding-type rebar support (A) comprising a rebar support frame (5) having a crossing (6) and having self-supporting rod legs (7) on the outer side so as to be capable of pivoting Directly on the surface (1) or on the lath net (2) stretched on the slope (1) at the planned frame forming position,
In the vertical frame (11a) portion, the lath wall surface body (3)
To the one side of the vertical frame (11a), and the horizontal frame (1
In the portion 1b), the lath wall surface bodies (3) are brought closer to the lower side of the slant of the horizontal frame (11b) and arranged so that the entire frame is in a lattice shape, and the reinforcing bar supporting frame bodies (5) are arranged. Open and place the self-supporting rod leg (7) on the slope (1) or stab it to make the rebar support (A) stand by itself, and contact the cross section (6) of the rebar support frame (5). The reinforcing bar (8) is inserted, and the reinforcing bar (8) is fixed to each intersection (6) of the fixing member (9).
The method of concrete spraying on one side with lath, in which the reinforcing bar support (A) and the reinforcing bar (8) are piled up and sprayed with concrete (10). 2. The end portion (1) of the upper lateral support frame (5a).
The concrete spraying according to claim 1, wherein 2) is bent upward so as to come close to the upper corner of the method frame raised by spraying, and a contact line (13) is stretched at the bent upper end (12). One side lath method frame construction method. 3. Reinforcing bar support (A) is provided on one side (3a) of an oblong lath wall surface body (3) with laterally spaced upper and lower pivoting parts (4), and those pivoting parts are attached. The base (5d) of the upper and lower horizontal support frames (5a) and (5b) is provided in the part (4).
And a lateral support frame (5
The vertical support frame (5c) or the horizontal support frame (5a), (5b) is formed by intersecting the intermediate portions of a) and (5b) with the vertical support frame (5c) so as to intersect the reinforcing bar arrangement planned position and connected and fixed. A self-supporting rod leg (7) is provided so that the lower end of the lath wall surface body (3) standing up at the outer end or a portion near the outer end bile side reaches a position lower than the bottom of the lath wall surface body (3). The one-sided lath-folding type rebar support used in the concrete spraying one-sided lath method frame construction method according to claim 1 or 2. 4. The lath wall surface body (3) comprises a wire mesh, a metal grid,
The one-sided lath folding type rebar support according to claim 3, which is made of a plywood, a synthetic resin plate or a cardboard face material.