JPH0816363B2 - Construction method of reinforced concrete structures such as foundations and walls and the structures - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of constructing a reinforced concrete structure such as a foundation or a wall, and improvement of the structure.

[0002]

2. Description of the Related Art Various reinforced concrete structures in construction and civil engineering, that is, reinforced concrete structures such as foundations, walls, girders or beams, are constructed by arranging a frame made of Lauan plywood around the reinforced structural reinforcing bars. In many cases, it is constructed by pouring concrete, burying structural rebar, and dismantling the formwork.

[0003]

Under the present circumstances, the above-mentioned mold is discarded after being used several times, and a new one is used again. It is pointed out that the frequency of use is only about 3 to 5 times for lauan plywood, which is a worrying situation from the viewpoint of protection and saving of wood resources. In addition, since the above-mentioned formwork is troublesome to manufacture, it is necessary to repeat the work of assembling and disassembling each time it is used, but in combination with the difficulty of securing skilled workers, the reinforced concrete The construction cost of the structure is high.

The present invention has been researched and proposed in order to improve such a situation, and without using a conventional formwork which requires the work of assembling and disassembling, in other words, the mortar on the reinforcing bar net established on site. The purpose of the present invention is to construct a reinforced concrete structure having a predetermined strength by adopting a so-called rebar discard formwork formed by spraying with, with good construction efficiency and at low construction cost.

[0005]

According to the construction method of the present invention, the structural rebar 1 is established according to the practice, and the rebar nets a and a are established on both sides of the structural rebar 1 at a required interval, and both of them are formed. The separator 5 is mounted across the reinforcing nets a and a. After that, mortar is sprayed from the outside to the rebar nets a, a to form the mortar layers b, b having a required thickness to form the rebar discarding form part, and the hardening of the rebar nets a, a is blocked. By pouring concrete and forming and hardening the concrete layer 2 in which the structural rebar 1 is embedded,
It is intended to construct a reinforced concrete structure such as a desired foundation.

In the above, the shielding materials c and c made of lath such as metal lath and wire lath are stretched and superposed on both the reinforcing bar nets a and a (FIGS. 1 to 3), and the reinforcing bar nets a and a are used. And the shielding materials d and d made of a heat insulating material are used by being polymerized (FIG. 4), and further, the shielding material c made of lath is stretched and polymerized with one rebar net a, and the other reinforcing bar is used. It is preferable to polymerize and use the shielding material d made of a heat insulating material for the net a (FIG. 5).

Further, in the construction method of the present invention, the structural rebar 1 is established in accordance with the customary practice, and the shielding members d, d made of a heat insulating material are established on both sides of the structural rebar 1 at required intervals. Then, the reinforcing bar net a is superposed on the outside of the one shielding material d, and the reinforcing bar net a ′ is established on the outside of the other shielding material d at a required interval.
The separator 5 is mounted across the a '.

Thereafter, mortar is sprayed from the outside onto the reinforcing bar net a formed by polymerization on the one shielding material d to form a mortar layer b having a required thickness to form a reinforcing bar discarding form part. On the outside of the other shielding material d, mortar is sprayed from the outside to form a mortar layer b ′ having a thickness that reaches the outside of the reinforcing net a ′ to form a reinforcing bar discarding mold part. Then, before the mortar layer b'is cured, the ceramic tile e is mounted on the rebar net a'and pressed onto the mortar layer b '. After hardening of both mortar layers b and b ', concrete is placed between both shielding materials d and d to form and harden the concrete layer 2 in which the structural rebar 1 is embedded to construct a reinforced concrete structure such as a foundation. .

In this case, a reinforcing bar net a is provided on one side of the structural reinforcing bar 1 with a shielding material c made of a lath such as a metal lath or a wire lath superposed on the other side of the structural reinforcing bar 1 at a required interval. Is a shielding material d made of heat insulating material at a required interval
Is established, and a reinforcing bar net a ′ is established outside the shielding material d at a required interval. The ceramic tile e is mounted on the reinforcing bar net a ′ and pressure-bonded to the mortar layer b ′ in the same manner as above. It is clear that you may do it.

[0010]

[Function] By using mortar from the outside to form a mortar layer on the rebar nets established at required intervals on both sides of the structural rebar to form a mortar layer, this is used as a rebar discard formwork. -Stage rebar structure can be easily constructed.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments shown in the drawings will be described in detail below.
FIG. 1 is a vertical cross-sectional view of a main part of a foundation A that is a first embodiment of the reinforced concrete structure of the present invention. The foundation A is formed by superposing the reinforcing nets a, a on both outer surfaces of the concrete layer 2 in which the structural reinforcing bars 1 for foundation are embedded, and spraying the mortar layers b, b on the outside of each reinforcing net a, a. In addition, a shielding material c made of lath such as metal lath and wire lath is stretched and superposed on the inside of each rebar net a.

Reinforcing bar nets a, a are formed by welding a plurality of vertical bars 3 and horizontal bars 4 at their intersections to form a large number of square meshes each having a side of 100 mm.
A lath such as a wire lath is stretched around the rebar nets a and a by binding a required portion with a thin wire (FIG. 3).

The construction of the base A having the above-mentioned structure is performed as follows. First, the structural rebar 1 for the foundation is established at a predetermined position according to the practice, and the rebar nets a and a with the shields c and c stretched are established at the required intervals on both sides of the structural rebar 1. In addition, a plurality of separators 5 are mounted between the two reinforcing nets a, a at a required interval (FIGS. 2 and 3).

After that, the shielding materials c, c and the rebar nets a, a
Then, mortar is sprayed from the outside to form mortar layers b, b having a required thickness to form a reinforcing bar discarding form part, and the hardening is stopped so that the space between the two reinforcing bar nets a, a, more precisely, both the shielding materials. Concrete is poured between c and c to form and harden the concrete layer 2 in which the structural rebar 1 is embedded. This allows
The desired foundation A is easily constructed. In this foundation A, the structural rebar 1 is embedded in the concrete layer 2, and the rebar nets a, a are embedded between the concrete layer 2 and the mortar layers b, b integrated with the concrete layer 2. Together, they become excellent in strength.

FIG. 4 is a vertical cross-sectional view of an essential part of a foundation B which is a second embodiment of the reinforced concrete structure of the present invention. In this foundation B, reinforcing bar nets a and a composed of vertical bars 3 and horizontal bars 4 are located outside both sides of a concrete layer 2 in which a structural reinforcing bar 1 for a foundation is embedded, and outside the respective reinforcing bar nets a and a. In forming the mortar layers b, b by spraying,
This is similar to the basic A of the first embodiment.

However, the shielding material d located inside the reinforcing nets a, a, that is, on the outer surfaces on both sides of the concrete layer 2 is a heat insulating material having a required thickness. The only difference is that the shielding material c of A is lath. Therefore, again, the construction of the foundation B is performed in substantially the same manner as the case of the foundation A of the first embodiment.

FIG. 5 is a vertical cross-sectional view of an essential part of a foundation C which is a third embodiment of the reinforced concrete structure of the present invention. This foundation C is obtained by polymerizing reinforcing bar nets a and a consisting of vertical bars 3 and horizontal bars 4 on the outer surfaces of both sides of a concrete layer 2 in which structural reinforcing bars 1 for foundation are embedded, and on the outside of each reinforcing bar net a, a. The fact that the mortar layers b, b are formed by spraying is the same as the foundations A, B of the first and second embodiments.

However, on the inside of one rebar net a, the first
The shielding material c made of the same lath as in the case of the foundation A of the embodiment is placed, and the heat insulating material d having the same required thickness as the foundation B of the second embodiment is placed inside the other reinforcing bar net a. All are different from the cases of the first and second embodiments.

Therefore, the construction of the foundation C is also carried out in substantially the same manner as in the case of the foundation A of the first embodiment.
That is, a reinforcing bar net a having a shielding material c stretched at a required interval is established on one side of the foundation structural reinforcing bar 1 established at a predetermined position, and the other side is also provided with the required interval. Then, the shielding material d is established by being polymerized with the reinforcing bar net a, and a plurality of separators 5 are mounted between the reinforcing bar nets a and a at a required interval (FIG. 6).

After that, the shielding materials c and d and the rebar nets a and a
Then, mortar is sprayed from the outside to form mortar layers b, b having a required thickness to form a reinforcing bar discarding form part, and the hardening is stopped so that the space between the two reinforcing bar nets a, a, more precisely, both the shielding materials. Concrete is poured between c and d to form and harden the concrete layer 2 in which the structural rebar 1 is embedded.

FIG. 7 is a vertical cross-sectional view of the essential part of a foundation D which is a fourth embodiment of the reinforced concrete structure of the present invention. This foundation D has a structure corresponding to one having a structure substantially the same as that of the base B of the second embodiment shown in FIG. 4 and having a ceramic tile e mounted on one of the reinforcing nets a'and having its outer surface finished.

That is, the foundation D is the structural rebar 1 for the foundation.
Shielding materials d and d, which are heat insulating materials having a required thickness, are contact-polymerized with the outer surfaces on both sides of the concrete layer 2 in which is embedded. Further, one reinforcing bar net a composed of the vertical bars 3 and the horizontal bars 4 is directly superposed on the outer surface of the one shielding material d, and a mortar layer b is formed on the outside of the reinforcing bar net a by spraying.

However, the other reinforcing bar net a'is established with a required space s from the outer surface of the other shielding member d, and the mortar layer b'is formed on the outer surface of the shielding member d and the reinforcing bar net a '.
It is formed by spraying to a thickness such that it is buried and appears slightly outside it. The ceramic tile e is formed by integrally forming a pair of left and right vertical bar fitting portions 6 and 6 on the back surface, and the vertical bar fitting portions 6 and 6 are connected to the corresponding vertical bars 3 of the reinforcing bar net a '.
3 is fitted and mounted on the back surface of the mortar layer b '.
It is crimped to the surface of.

The foundation D has the above-mentioned structure, and its construction is
This can be carried out in the same manner as in the case of the foundation A of the first embodiment of FIG. 1 and thus of the foundation B of the second embodiment of FIG. 4, but the ceramic tile e is mounted on the reinforcing net a ′. , The mortar layer b'should be softened immediately after spraying and formed.

FIG. 9 is a vertical cross-sectional view of a main part of a foundation E which is a fifth embodiment of the reinforced concrete structure of the present invention. Similar to the foundation D which is the fourth embodiment of FIG. 7, this foundation E is one in which one of the reinforcing nets a'is mounted with a ceramic tile e and finished on the outer surface. The other is that the other reinforcing bar net a is polymerized with lath as the shielding material c instead of the shielding material d which is a heat insulating material.

Although the above-mentioned first to fifth embodiments were all based on the foundation, it is obvious that the present invention can be applied to other reinforcing bar structures such as walls, beams and girders.

[0027]

As is apparent from the above description, the present invention has the following effects. By using mortar to form a mortar layer of the required thickness by spraying mortar from the outside onto the rebar nets that have been established at the required intervals on both sides of the structural rebar, this is used as a rebar discard formwork. -Stage rebar structure can be easily constructed. Therefore, it is pointed out that it is a waste of timber resources, and it is troublesome to manufacture, and the drawbacks of the conventional formwork use, in which it is difficult to secure a skilled worker while assembling and disassembling each time it is used, , It can be totally eliminated including the construction cost and construction efficiency. Moreover, since the reinforcing bar discarding formwork portion of the structure of the present invention has the reinforcing bar net embedded in the mortar layer, it contributes to the improvement of the overall strength in cooperation with the structural reinforcing bar embedded in the concrete layer.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of an essential part of a first embodiment of a reinforcing bar structure of the present invention.

FIG. 2 is a side view showing a construction state of the first embodiment and is a state in which a reinforcing bar net in which a structural reinforcing bar and a shielding material are stretched and polymerized is established at a predetermined position and a separator is mounted in a straddle state.

FIG. 3 is a front view of the above.

FIG. 4 is a longitudinal sectional view of a main part of a second embodiment of the reinforcing bar structure of the present invention.

FIG. 5 is a longitudinal cross-sectional view of a main part of a third embodiment of the reinforcing bar structure of the present invention.

FIG. 6 is a side view showing a construction situation of the third embodiment, in which a reinforcing bar net and the like, which are stretched and superposed with structural reinforcing bars and a shielding material, are established at predetermined positions and a separator is mounted in a straddle state.

FIG. 7 is a longitudinal sectional view of an essential part of a fourth embodiment of the reinforcing bar structure of the present invention.

FIG. 8 is a lateral cross-sectional view of the essential parts of the fourth embodiment.

FIG. 9 is a longitudinal cross-sectional view of a main part of a fifth embodiment of the reinforcing bar structure of the present invention.

[Explanation of symbols]

 1 Structural Reinforcing Bar 2 Concrete Layer 3 Vertical Bar 4 Horizontal Bar 5 Separator a Reinforcing Bar Net a'Reinforcing Bar Net b Mortar Layer b 'Mortar Layer c Shielding Material d Shielding Material Ceramic Tile

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display location E04B 2/84 K

Claims (12)

[Claims] 1. A structural reinforcing bar 1 is established in accordance with the customary practice, and a reinforcing bar net a is provided on both sides of the structural reinforcing bar 1 with a required space.
a is established, and a separator 5 is mounted over the reinforcing nets a and a, and then mortar is sprayed from the outside to the reinforcing nets a and a to form mortar layers b and b having a required thickness.
To form the rebar discard formwork part, and wait for its hardening,
A method for constructing a reinforced concrete structure, such as a foundation or a wall, in which concrete is poured between both rebar nets a and a to form and harden a concrete layer 2 in which structural rebar 1 is embedded. 2. Construction of a reinforced concrete structure such as a foundation or a wall according to claim 1, wherein shielding materials c and c made of lath such as metal lath and wire lath are stretched and superposed on both rebar nets a and a. Law. 3. The method for constructing a reinforced concrete structure such as a foundation or a wall according to claim 1, wherein the shielding materials d, d made of a heat insulating material are superposed on both the reinforcing nets a, a. 4. A shielding material c made of lath such as a metal lath or a wire lath is stretched and superposed on one rebar net a, and a shielding material d made of a heat insulating material is superposed on the other rebar net a. A method for constructing a reinforced concrete structure such as a foundation and a wall according to claim 1. 5. A structural rebar 1 is established in accordance with the customary practice, shielding materials d, d made of a heat insulating material are established on both sides of the structural rebar 1 at required intervals, and a reinforcing bar is provided outside one of the shielding materials d. A net a is superposed, a reinforcing bar net a ′ is established outside the other shielding material d at a required interval, and a separator 5 is mounted across the reinforcing bar nets a and a ′. Mortar is sprayed from the outside onto the reinforcing net a formed by polymerization on the one shielding material d to form a mortar layer b having a required thickness to form a reinforcing bar discarding mold part, and on the outside of the other shielding material d. Mortar is sprayed from the outside to form a mortar layer b'thick enough to reach the outside of the rebar net a'to form a rebar discard formwork part. Before the mortar hardens, the ceramic tile e is cured. The mortar layer b '
It is mounted on the above-mentioned rebar net a ′ while being crimped to the mortar layers b and b ′ to harden them, and concrete is placed between both the shielding materials d and d, and the concrete layer 2 in which the structural rebar 1 is embedded. A method for constructing reinforced concrete structures such as foundations and walls characterized by forming and hardening concrete. 6. A structural reinforcement bar 1 is established according to the customary practice, and a reinforcing bar net a is formed on one side of the structural reinforcement bar 1 by superposing a shielding material c made of lath such as metal lath or wire lath at a required interval. Then, on the other side of the structural rebar 1, a shielding material d made of a heat insulating material is established at a required interval, and on the outer side of the shielding material d, a reinforcing bar net a ′ is established at a required interval. Then, the separator 5 is mounted on the reinforcing nets a and a'between them, and then the mortar layer b having a required thickness is sprayed from the outside to the reinforcing net a on which the shielding material c is superposed. A mortar layer b'having a thickness such that it is formed as a rebar discard formwork part, and mortar is sprayed from the outside to the outside of the shielding material d on the other side to reach the outside of the rebar net a '. To form the rebar discard formwork part, and the mortar 'While pressed to the reinforcing bar net a' ceramic tiles e the mortar layer b before reduction is mounted to, waiting for hardening of both mortar layer b, b ',
Concrete is placed between both shields c and d, and structural rebar 1
A method for constructing a reinforced concrete structure, such as a foundation or a wall, which comprises forming and hardening a concrete layer 2 in which a burial is embedded. 7. Reinforcing bar nets a, a are polymerized on both outsides of a concrete layer 2 in which structural reinforcing bars 1 are embedded, and a mortar layer b is formed by spraying on the outside of the reinforcing bar nets a, a.
Reinforced concrete structures such as foundations and walls, characterized in that b is polymerized. 8. A reinforced concrete structure for foundations, walls, etc. according to claim 7, wherein the reinforcing nets a, a are formed by superimposing shielding materials c, c made of lath such as metal lath and wire lath. 9. Shielding materials d, d made of a heat insulating material are polymerized on both outer sides of the concrete layer 2 in which the structural reinforcing bars 1 are embedded, and rebar nets a, a are polymerized on the outer sides of the both shielding materials d, d. Further, a reinforced concrete structure such as a foundation or a wall, characterized in that the mortar layers b, b formed by spraying on the outside of the reinforced nets a, a are superposed. 10. A shielding material c made of lath such as metal lath or wire lath is stretched and superposed on one rebar net a, and a shielding material d made of a heat insulating material is superposed on the inside of the other rebar net a. The reinforced concrete structure for a foundation, a wall, etc. according to claim 7. 11. A concrete layer 2 in which structural reinforcing bars 1 are embedded.
The shielding materials d, d made of heat insulating material are superposed on both outer sides of the rebar, the reinforcing bar net a is superposed on one outer side of the shielding material d, and the rebars are formed on the outer side of the other shielding material d with a required space. The net a'is established, and a mortar layer b'having a thickness that reaches the outside of the reinforcing net a'is formed on the outside of the other shielding material d, and the ceramic tile e is formed on the reinforcing net a '. A reinforced concrete structure such as a foundation or a wall, which is mounted in a state of being crimped to a mortar layer b '. 12. A concrete layer 2 in which structural reinforcing bars 1 are embedded.
On one side, a shielding material c made of lath such as metal lath and wire lath is stretched and polymerized to establish a reinforcing bar net a, and a mortar layer b formed by spraying mortar from outside is superposed on the reinforcing bar net a, A shielding material d made of a heat insulating material is established on the other side of the concrete layer 2, a reinforcing bar net a ′ is established outside the shielding material d at a required interval, and the outside of the shielding material d is the above-mentioned. A mortar layer b'having a thickness that reaches the outside of the reinforcing net a'is formed, and the reinforcing net a'is formed.
A reinforced concrete structure, such as a foundation or a wall, in which a ceramic tile e is mounted on the mortar layer b'in a pressure-bonded state.