JPH05321273A - Method for constructing concrete structure and fabricating method for concrete form - Google Patents

Abstract

PURPOSE:To construct a structure of high quality and high precision in complet ed product through simple working processes, in a short time, and at a low cost. CONSTITUTION:A bar assembly 1 consisting of mild steel bars is assembled in the form of the intended concrete structed B, and the periphery of this bar assembly 1 is fixed in a concreting form 4. An outer wall layer 2 of concrete is constructed one side face after another of said bar assembly 1, and a concrete framing A is formed which has a space 5 internally. This concrete framing A is conveyed to the construction site and installed, and concrete is placed into the space 5 to complete the concrete structure B of solid state 8. According to these procedures, the resultant structure has a high quality and precision, which can be achieved through simple working processes, in a short time, and at a low cost.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for constructing a concrete structure and a method for producing a concrete frame used in the civil engineering / construction industry.

[0002]

2. Description of the Related Art Conventionally, a general construction method for constructing a concrete structure, for example, a concrete foundation of a building, is carried out on site by forming a predetermined mold.

According to this construction method, a formwork for the entire foundation is formed by steel plates or wood-based panels on the root cutting that is prepared by excavating the ground and putting in quarry, and after assembling the rebar in the formwork, The concrete was poured and cured, then the formwork was removed, and the root cutting was backfilled to build the foundation.

In the above-mentioned conventional construction method, since a large formwork for the entire foundation is constructed on site, a large number of panels and accessory parts for supporting the panels are required, and it is necessary to carry this in and out of the site. It takes a lot of labor and time, and it is often difficult to secure a large number of panels and accessories in the field.

It is very difficult to form a large mold for the entire foundation with high precision on site, and most of them are by skilled engineers.

Further, when connecting the panels, since they are fixed through the bolts and the like, the finished skin surface has holes due to the bolts, and the appearance is not good, and it takes time to repair them.

[0007] There are various problems such as.

[0008]

DISCLOSURE OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and the outer peripheral portion of a reinforcing bar assembly reinforced in the shape of a concrete structure to be molded is
Attached in a concrete molding form, after forming an outer wall layer of concrete one by one in the rebar assembly, after configuring a concrete frame body having a space inside,
Transfer this concrete frame to the construction site and install it,
A concrete structure capable of forming a solid structure with high precision and quality by pouring concrete into the space to form a solid concrete structure quickly and inexpensively by a simple working process. It is an object of the present invention to provide a method for constructing the above and a method for manufacturing a concrete frame.

[0009]

[Means for Solving the Problems] Means of the present invention for achieving the above-mentioned object are to provide an outer peripheral portion of a reinforcing bar assembly, which is reinforced based on a size and strength commensurate with the shape of a concrete structure to be molded, It is installed in a concrete forming frame with an open top, and a concrete outer wall layer of a predetermined thickness is formed on each side of the rebar assembly to form a concrete frame body having a space inside, and then this concrete is formed. It is a method for constructing a concrete structure, in which the frame is transferred to a construction site and installed, and concrete is poured into the space to form a solid concrete structure.

Further, the outer peripheral portion of the reinforcing bar assembly, which has been reinforced according to the size and strength corresponding to the shape of the concrete structure to be molded, is attached to the concrete molding form having an open upper part, It is a method for manufacturing a concrete frame body in which a concrete outer wall layer having a predetermined thickness is formed on each side and a space portion is formed inside.

Furthermore, a concrete molding die in which the outer peripheral portions of the outer reinforcing bar assembly and the inner reinforcing bar assembly at predetermined intervals arranged on the basis of the size and strength corresponding to the shape of the concrete structure to be molded are opened at the top. Attached in the frame, forming a concrete outer wall layer of a predetermined thickness on each side of the outer and inner rebar assemblies, to form a double outer frame and inner frame, each outer frame and inner It is a method for manufacturing a concrete frame body in which a space is provided inside the frame body.

Furthermore, the outer peripheral portion of the reinforcing bar assembly, which is reinforced according to the size and strength corresponding to the shape of the concrete structure to be molded, is mounted in a concrete molding form having an open upper part, After forming a concrete outer wall layer of a predetermined thickness on each side in, to configure a concrete frame body having a space portion inside, transfer this concrete frame body to the construction site and install it, and place concrete in the space portion. Pour to form a solid concrete structure, further attach the concrete frame to the upper part of the concrete structure, repeat the above steps while pouring concrete into the space, and set a predetermined height. It is a method of constructing a concrete structure, in which the structure is molded.

Incidentally, when the concrete outer wall layer is formed in the mold, the exterior decorative material may be integrally formed on the surface layer portion thereof.

[0014]

The method for constructing a concrete structure and the method for producing a concrete frame of the present invention configured as described above have the following effects.

In advance, a reinforcing bar assembly is formed by arranging the reinforcing bars based on the size and strength corresponding to the shape of the finished concrete structure.

Then, the bottom portion of the rebar assembly is installed in a concrete forming mold having an open top, and concrete is poured into this form, and one side surface of the rebar assembly,
That is, a concrete outer wall layer having a predetermined thickness that does not easily cause damage such as cracking is formed on the bottom portion.

Further, by the above steps, the outer peripheral layer of each of the reinforcing bar assemblies is similarly formed with a concrete outer wall layer having a predetermined thickness.

Then, a concrete frame body having a space inside and surrounded by the concrete outer wall layer is constituted.

Further, when this concrete frame is transferred to a construction site, installed at a desired position, and concrete is poured into the internal space, a solid concrete structure is formed.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an example of an embodiment of the method for constructing a concrete structure and the method for producing a concrete frame according to the present invention will be described with reference to the drawings.

In FIGS. 2 and 3, A is a concrete frame, which is transported to the site and installed, and then a predetermined concrete placing is carried out to complete the concrete structure B shown in FIG. Is.

This concrete frame A is a component made of various concretes in the civil engineering / construction industry, for example, the foundations of buildings, columns, beams, walls, slabs,
It is used for various materials such as roofing materials, stairs, water storage / oil storage tanks, basements, waterways, side walls, bridges, breakwaters, chimneys, wave-dissipating blocks, etc. , Corners and other irregular shapes such as cylindrical, rectangular or curved type, corner angle type, and truncated circle type can be molded, and are composed of a reinforcing bar assembly 1 and a concrete outer wall layer 2. ..

The above-mentioned reinforcing bar assembly 1 has round bars, deformed reinforcing bars 3 and 3 having predetermined thicknesses and lengths arranged on the basis of the size and strength corresponding to the shape of the concrete structure B to be molded. This is done in the factory based on the design in advance.

The concrete outer wall layer 2 is a concrete layer formed on the outer peripheral portion of the rebar assembly 1 to a predetermined thickness in a factory. The concrete outer wall layer 2 is mounted in a concrete forming frame 4 having an open upper portion. , Each side of the above-mentioned reinforcing bar assembly 1 is formed, that is, sequentially,
The reinforcing bar assembly 1 is rotated by 90 ° and molded, and for example, a concrete structure B as shown in FIG.
In the case of molding, as shown in FIG. 5 (a), the reinforcing bar assembly 1 is formed in order from one side surface,
After attaching the side portion of the reinforcing bar assembly 1 to the formwork 4 with a predetermined depth dimension, pouring ready-mixed concrete from the opening in the upper part of the formwork 4 by a known method to cure and solidify, and similarly 90
° It is inverted and set on the formwork, and the specified fresh concrete is placed to finish the four sides.

As shown in FIG. 5 (b), the bottom portion of the reinforcing bar assembly 1 is attached to the form 4, and similarly, fresh concrete is poured to solidify the bottomed concrete frame A. It may be formed.

The step of molding the concrete outer wall layer 2 is performed by a sequential rotary method in which the reinforcing bar assembly 1 is inverted by 90 ° when one side surface of the mold 4 is completed and the molding is performed in the same manner. Therefore, the work can be rationalized and labor can be saved, resulting in cost reduction.

Therefore, this concrete outer wall layer 2
Is to replace the formwork in the site in the production of the concrete structure B, is connected and held to the reinforcing bar assembly 1, and is as thin as possible to withstand the pressure and gravity of the driving of the fresh concrete. And adjusting the arrangement state of the reinforcing bars 3 according to the necessary strength thereof, and having a large space 5 inside the concrete outer wall layer 2.

Further, as shown in FIG. 6 (a), the concrete frames A formed by the above-mentioned steps are arranged in parallel at a predetermined interval, and the lower part thereof is connected by the reinforcing bars 3 to pour ready-mixed concrete. A concrete structure B such as a water channel used in civil engineering is formed.

Then, as shown in FIG. 6 (b), the concrete outer wall layer 2 is formed on the outer periphery of the hollow steel frame assembly 1 by the above-mentioned step, and the above-mentioned construction method ( When the concrete inner wall layer 2 is formed by inscribing the mold 4 in the hollow portion, a concrete construct B such as a water tank is molded.

Further, in the case of a concrete structure B having a curved surface as shown in FIG. 7, a formwork 4 adapted to this curved surface is brought into contact with the reinforcing bar assembly 1 and a known spraying means is applied from the inside of the reinforcing bar assembly 1. A concrete outer wall layer 2 having a predetermined thickness may be formed by 4a.

At the time of molding the concrete outer wall layer 2, as shown in FIG. 8 (a), a desired exterior decorative material 6, such as tiles, blocks, color building materials, stainless steel, etc., is formed on the bottom of the formwork 4. Metal forming plate, synthetic resin forming plate,
Ceramic molding plates, etc. may be laid in advance, and they may be integrated with the concrete outer wall layer 2 as shown in Fig. 8 (b) with the filling of fresh concrete. There is no need to perform tile work, and the risk of the tile 6 falling off due to mortar deterioration is eliminated.

In the concrete structure B, the concrete frame A molded as described above is transferred to a desired construction site and installed directly on the mortar-struck part or the ground 7, etc. By pouring ready-mixed concrete into the space portion 5 and making the portion into a solid body 8, an integral concrete molded member is completed.

The concrete structure B is shown in FIG.
As shown in FIG. 2, the concrete frame A used for the concrete structure B is attached to the upper portion of the already formed concrete structure B by a joint 9 such as an inro type, and ready-mixed concrete is placed in the space portion 5. While pouring, the concrete frame A is again piled on the upper part and the concrete pouring is repeated to form a concrete structure B having a predetermined height. In the structure, the concrete structure B is used for walls and columns. In the case of a concrete molding having a high height, it is effective when the inside of the concrete is filled with concrete and there is a risk that the quality will be deteriorated.

2 and 6, reference numeral 10 denotes a height adjusting member of the concrete frame A, which stably mounts the base 12 at the lower part of the screw body 11 at the installation position 7 such as a waste concrete or the ground, A moving piece 13 screwed in the middle of the screw body 11 is provided with a rebar assembly 1 or a concrete outer wall layer 2 in the concrete frame A.
The concrete frame A can be mounted to a desired height by rotating the screw body 11 in the forward and reverse directions, and the concrete frame A can be mounted at a plurality of locations below the concrete frame A.

In FIG. 10, B shows a concrete construction in which a water tank such as a fire hydrant is unitized, and the top plate 14 (concrete construction) is formed on the upper portion of the construction as shown in FIG. 6 (b). Is attached to form a sealed water tank, and inside or around it, ladder 15, automatic water supply device 16, water supply pipe 17, preliminary piping sleeve 18, flow tube test tube 1
9, water supply pipe connection port 20, hood valve test wire 21, manhole 22, mobile lifting hook 23, and other related equipment and equipment are pre-installed in a factory-produced state and are completely sealed. Therefore, it is hygienic and effective for storing liquids, powders, and gases for food.

In the concrete structure B of the water storage tank described above, if an inner material 25 such as a stainless steel plate, a ceramic plate, or a tile having excellent corrosion resistance is stretched over the entire inner wall, water leakage, oil leakage, etc. will not occur. What is prevented, this interior material
As shown in FIG. 11, 25 is formed in a rectangular shape, and a large number of supporting members 26 are provided on the mounting surface side thereof, and the supporting members 26 are embedded at the time of molding the concrete outer wall layer 2. Further, the seams of the interior material 25 may be fixed by welding, bonding or the like, if necessary.

In FIGS. 12 to 14, A is a concrete frame having a double structure. As shown in FIGS. 2 and 3, the reinforcing bar 3 is reinforced and the reinforcing bar assemblies 1 and 1 are doubled at predetermined intervals. And reinforce the rebar assembly 1,1 by placing concrete
When the concrete outer wall layers 2, 2 and 2, 2 each having a predetermined thickness are formed on the outer peripheral portions of the above, there is a space inside and the periphery is surrounded by these concrete outer wall layers 2, 2 and 2, 2. To form a box-shaped concrete frame A which is a wall 29 composed of a double outer frame 27, an inner frame 28, and spaces 5 and 5. A large space portion 30 is formed inside of the structure, which serves as a construction space for other structures or is filled with excavated soil, concrete or the like to form an integrated structure.

This is used for large structures such as sea tides / breakwaters, floating islands, harbor structures, underground structures and underground foundations. Furthermore, as shown in FIG. 13, a caisson-shaped wall is formed. Attached to the lower end of the body 29, sharpened portions 31 and 31 that expand outward respectively inside the body 29, sink this concrete frame A into a predetermined ground for excavation, and add the frame A to the upper part. It can be applied to the construction method for constructing a structure. In this case, the thing formed beforehand on land may be floated on the water and towed to a desired position. If the space parts 5 and 5 are filled with a floating body such as urethane. The frame body A is more likely to float.

It should be noted that from the peripheral portion of the above-mentioned sharp portions 31, 31,
Excavating means (not shown) such as water or air is provided in the space portion 5 of the frame A.
If it is jetted through, the excavation efficiency will be further improved.

Next, an explanation will be given of the construction state of the structure B for the foundation of a building or the like by the concrete frame A having the double structure mentioned above.

As shown in FIG. 12, the concrete frames A constructed as described above are connected in a predetermined number, or a single unit is carried to the site as required, and as shown in FIG. A rectangular body is formed, and the lower sharpened portions 31, 31 are grounded to the ground.

In the case of forming a rectangular body by the frame A, it is necessary to seal the end portion firmly and water-tightly by the connecting means 32. This connecting means 32 is shown in FIG. 15 (a). As shown in FIG. 2, the frame A is provided with vertical grooves 33, 33 at both ends thereof, and the vertical grooves 33, 33 are covered with a bag-shaped soft material 34 made of rubber or synthetic resin. When the soft material 34 is filled with a filling material 36 such as concrete, water, or pressurized air, the joint portion of the frames A and A is joined together.

Then, the space portion 5 of the frame A is made by the submersible method.
When excavated, it will be buried in the ground due to the weight of the frame A. Even if a building such as an existing building is adjacent to the construction site, earth retaining work will be carried out in advance like the conventional foundation work. As a result, it is not necessary to drive a steel sheet pile, and the outer frame body 27 of the wall body 29 serves as a vertical earth retaining wall to prevent the earth and sand from collapsing in the adjacent land, and the construction proceeds smoothly and safely.

When the previous frame A is buried, the space 5 is excavated while the next frame A is piled up on the upper part of the frame A to construct a foundation of a predetermined depth.

Large space formed by double frame A
Reference numeral 30 indicates that the frame A may be excavated after being buried in the ground, and if the large space portion 30 is laid on one surface with concrete, the strength is further improved as a foundation. Depending on the, this part can also be used in the basement, and the frame A
The space portion 5 is made of concrete for reinforcement, but can be used as a corridor or a small room by omitting the upper portion.

[0046]

As described above, the method for constructing a concrete structure and the method for producing a concrete frame according to the present invention are designed such that the outer peripheral portion of the reinforcing bar assembly arranged in the shape of the concrete structure to be molded is a concrete molding die. Attached in the frame, by forming an outer wall layer of concrete one by one side in the rebar assembly, after configuring the concrete frame body having a space inside, transfer this concrete frame body to the construction site for installation, By pouring concrete into the space to form a solid concrete structure, it is possible for a general worker to perform a structure with high accuracy and quality, and with a simple work process. It can be molded quickly and inexpensively.

After the construction of the structure, the backfilling work can be performed on site without waiting for the solidification of the concrete, so that the construction schedule can be greatly shortened.

Since the exterior decorative material is attached at the same time as the concrete frame is formed, the labor of the construction can be saved. It has special effects such as.

[Brief description of drawings]

1A and 1B show a concrete structure according to the present invention, in which FIG. 1A is a perspective view and FIG.

FIG. 2 is a vertical sectional front view showing a mounting state of the concrete frame body in FIG. 1 with a part thereof omitted.

3 shows the concrete frame in FIG. 1,
(a) is a perspective view, (b) is a vertical front view with a part omitted.

FIG. 4 is a perspective view showing a reinforcing bar assembly in FIG. 1.

5A and 5B are explanatory views showing a molding state of the concrete frame body of FIG. 3, in which FIG. 5A shows molding of a peripheral side portion of the reinforcing bar assembly, and FIG. 5B shows molding of a bottom portion of the reinforcing bar assembly.

FIG. 6 is an explanatory diagram showing each example of another concrete structure in FIG. 1.

FIG. 7 is an explanatory diagram showing an example of still another concrete structure in FIG. 1.

8A and 8B show another example of the concrete frame body in FIG. 3, in which FIG. 8A is an explanatory view showing a molding state, and FIG. 8B is a perspective view showing a state after molding.

FIG. 9 is a cross-sectional view showing a molded state of another example of the concrete structure in FIG.

FIG. 10 is a cross-sectional view of a concrete structure showing an example of a water tank.

FIG. 11 is a perspective view of an interior material stretched over the inner wall of the concrete structure.

FIG. 12 is a perspective view showing still another example of the concrete structure in FIG.

13 is a cross-sectional view of FIG.

14 is a plan view showing the concrete structure in FIG. 13. FIG.

FIG. 15 shows a connecting means for concrete frames,
(a) is a perspective view showing a vertical groove provided in a frame, (b) is a cross-sectional plan view showing a coupling member inserted into the vertical groove, and (c) is a cross-sectional plan view showing a connected state.

[Explanation of symbols]

 A Concrete frame B Concrete structure 1 Reinforcing bar assembly 2 Concrete outer wall layer 3 Reinforcing bar 4 Formwork 5 Space part 6 Exterior decorative material 8 Solid body 27 Outer frame 28 Inner frame

Claims (5)

[Claims] 1. An outer peripheral portion of a reinforcing bar assembly, which is reinforced according to the size and strength corresponding to the shape of a concrete structure to be molded, is mounted in a concrete molding form having an open upper part, After forming a concrete outer wall layer of a predetermined thickness on each side to form a concrete frame body having a space inside, transfer this concrete frame body to the construction site and install it, and cast concrete into the space part. A method of constructing a concrete structure, characterized in that a solid concrete structure is formed and molded. 2. An outer peripheral portion of a reinforcing bar assembly, which is reinforced according to the size and strength corresponding to the shape of a concrete structure to be molded, is mounted in a concrete molding frame with an open upper part, A method for manufacturing a concrete frame, in which a concrete outer wall layer having a predetermined thickness is formed on each side and a space portion is formed inside. 3. A concrete forming mold in which the outer peripheral portions of the outer reinforcing bar assembly and the inner reinforcing bar assembly, which are arranged at predetermined intervals based on the size and strength corresponding to the shape of the concrete structure to be molded, are open at the top. Attached in the frame, forming a concrete outer wall layer of a predetermined thickness on each side of the outer and inner rebar assemblies, to form a double outer frame and inner frame, each outer frame and inner A method for manufacturing a concrete frame body, characterized in that a space portion is provided inside the frame body. 4. An outer peripheral portion of a reinforcing bar assembly, which is reinforced according to the size and strength corresponding to the shape of a concrete structure to be molded, is mounted in a concrete molding frame with an open upper part, After forming a concrete outer wall layer of a predetermined thickness on each side to form a concrete frame body having a space inside, transfer this concrete frame body to the construction site and install it, and cast concrete into the space part. Set up to form a solid concrete structure, further, attach the concrete frame to the upper part of this concrete structure, repeat the above steps while pouring concrete into the space, A method for constructing a concrete structure, which comprises molding the structure. 5. The method for producing a concrete frame body according to claim 2, wherein an outer decorative material is integrally formed on a surface layer portion of the formwork when the concrete outer wall layer is formed.