JP3248010B2 - Method of manufacturing concrete frame - 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 for manufacturing a concrete frame used in the civil engineering and construction industries.

[0002]

2. Description of the Related Art Conventionally, a method of constructing a concrete structure, for example, a concrete foundation of a building, on a site by setting a predetermined mold is generally used.

[0003] In this construction method, the entire foundation is formed from a steel plate or a wood panel on the excavated ground, quarried, and quarried, and a reinforcing bar is assembled in the formwork. The concrete was poured and cured, then the formwork was separated and the roots were backfilled to build the foundation.

[0004] The above-mentioned conventional method requires a large number of panels and accessory parts for supporting the panels since a large formwork of the entire foundation is constructed at the site, and it is necessary to carry them into and out of the site. It requires a lot of labor and time, and it is often difficult to secure a large number of panels and accessories on site.

[0005] It is very difficult to form a large formwork of the entire foundation on site with high precision, and most of them are performed by skilled engineers.

Further, since the panels are connected and fixed with bolts or the like in connection with the panels, trace holes are formed by the bolts on the finished skin surface, so that the appearance is poor and it takes time to repair them.

There are various problems such as:

[0008]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and has been made in consideration of the size and strength of a concrete structure to be formed. An outer peripheral portion of the reinforcing bar assembly and the inner reinforcing bar assembly is mounted in a concrete forming form having an open upper portion, and a concrete outer wall layer of a predetermined thickness is formed on each side surface of the outer and inner reinforcing bar assemblies, By forming a double outer frame and inner frame, and providing a space inside each outer frame and inner frame, a completed structure with high accuracy and quality can be formed by a simple work process. It is an object of the present invention to provide a method for manufacturing a concrete frame that can be formed quickly and at low cost.

[0009]

Means of the present invention for achieving the above object are to provide an outer rebar assembly having a predetermined interval and reinforcing bars arranged on the basis of a size and strength corresponding to the shape of a concrete structure to be formed. The outer peripheral portion with the inner reinforcing bar assembly is mounted in a concrete forming form having an open top, and a concrete outer wall layer having a predetermined thickness is formed on each side of the outer and inner reinforcing bar assemblies to form a double outer reinforcing layer. There is provided a method for manufacturing a concrete frame in which a frame and an inner frame are formed, and a space is provided inside each of the outer frame and the inner frame.

[0010]

[0011]

[0012]

[0013]

[0014]

[0015]

[0016]

[0017]

[0018]

[0019]

[0020]

Next, an embodiment of a method for manufacturing a concrete frame according to the present invention will be described with reference to the drawings.

In FIG. 2 and FIG. 3, A is a concrete frame, which is transported to a site and installed, and then completed by performing predetermined concrete casting, and is a concrete structure B shown in FIG. It is.

The concrete frame A is made of various concrete components in the civil engineering and construction industries, for example, foundations of buildings, columns, beams, walls, slabs, and the like.
It is used for various materials such as roofing materials, stairs, or water / oil storage tanks, basements, waterways, side walls, bridges, breakwaters, chimneys, wave-dissipating blocks, etc. Any shape such as cylindrical, square or curved, corner square, or round, can be formed, and is composed of a reinforcing bar assembly 1 and a concrete outer wall layer 2. .

The reinforcing bar assembly 1 is provided with round bars and deformed reinforcing bars 3 and 3 of a predetermined thickness and length based on the size and strength corresponding to the shape of the concrete structure B to be formed. And do the work in the factory based on prior design.

The above-mentioned concrete outer wall layer 2 is formed by forming a concrete layer at a predetermined thickness on the outer peripheral portion of the above-mentioned reinforcing bar assembly 1 in a factory, and is mounted in a concrete forming form 4 having an open upper portion. , One side of the reinforcing bar assembly 1 is formed, ie, sequentially
The reinforcing member assembly 1 is formed by rotating the reinforcing member assembly 90 by 90 °. For example, as shown in FIG.
In the case where is formed, as shown in FIG. 5 (a), it is formed sequentially from one side surface of the reinforcing bar assembly 1,
A side portion of the reinforcing bar assembly 1 is attached to the formwork 4 with a predetermined depth dimension, and ready-mixed concrete is poured from an opening in the upper portion of the formwork 4 by a known method, cured and solidified.
It is to be turned upside down and set on a formwork, and a predetermined ready-mixed concrete is cast to finish the four sides.

As shown in FIG. 5 (b), the bottom portion of the reinforcing bar assembly 1 is attached to the formwork 4, and similarly, the ready-mixed concrete is poured and solidified to form the concrete frame A having a bottom. It may be formed.

The step of forming the concrete outer wall layer 2 is performed by a rotary method in which the rebar assembly 1 is turned over by 90 ° and formed in the same manner when one side is completed on the formwork 4. Thus, work can be streamlined and labor saved, resulting in cost reduction.

Therefore, this concrete outer wall layer 2
Is a form change in the site in the production of the concrete structure B, which 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 ready-mixed concrete. Which adjusts the arrangement state of the reinforcing bars 3 according to the required strength, and has a large space portion 5 in the interior surrounded by the concrete outer wall layer 2.

Further, as shown in FIG. 6 (a), the concrete frames A formed by the above-described steps are juxtaposed at a predetermined interval, and the lower portions thereof are connected by the reinforcing bar 3 to cast the ready-mixed concrete. Concrete structures B such as waterways used in civil engineering and the like are formed.

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

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

When the concrete outer wall layer 2 is formed, as shown in FIG. 8 (a), a desired exterior decorative material 6, for example, a tile, a block, a color building material, stainless steel, etc., is formed on the bottom of the formwork 4. Metal molded plate, synthetic resin molded plate,
As shown in FIG. 8 (b), a ceramic molded plate or the like may be laid in advance and integrated with the concrete outer wall layer 2 as shown in FIG. 8 (b). There is no need to perform tile work, and the possibility of the tiles 6 falling out due to mortar deterioration is eliminated.

In the concrete structure B, the concrete frame A formed as described above is transferred to a desired construction site, and is directly installed on a portion where mortar has been struck or on the ground 7 or the like. By casting fresh concrete into the space portion 5 and forming the portion into a solid body 8, an integrated concrete molding member is completed.

The concrete structure B is shown in FIG.
As shown in the figure, the concrete frame A used for the concrete structure B is attached to the upper part of the already formed concrete structure B by a joint 9 such as an inro type, and the ready-mixed concrete is inserted into the space 5 thereof. A concrete structure B having a predetermined height is formed by repeatedly placing concrete frame A on the upper portion of the concrete frame A while repeating the casting, and is used as a wall or a pillar in the structure. In the case of a tall concrete molded body, it is effective when nests are formed inside the concrete when the concrete is filled and there is a possibility that the quality may be deteriorated.

2 and 6, reference numeral 10 denotes a height adjusting member of the concrete frame A, which stably mounts the base portion 12 at the lower portion of the screw body 11 to an installation position 7 such as a disposal container or ground. The moving piece 13 screwed in the middle of the screw body 11 is connected to the reinforcing bar assembly 1 or the concrete outer wall layer 2 in the concrete frame A.
And a desired mounting height of the concrete frame A is obtained by forward and reverse rotation of the screw body 11, and provided at a plurality of locations below the concrete frame A.

FIG. 10B shows a concrete structure in which a water tank such as a fire hydrant is unitized, and a top plate 14 (concrete structure) is formed on the upper part of the structure formed as shown in FIG. 6B. A sealed water tank is formed by attaching a ladder 15, an automatic water supply device 16, a water supply pipe 17, a spare pipe sleeve 18, and a flow tube test tube 1 inside or around it.
9, water pipe connection port 20, hood valve test wire 21, manhole 22, moving lifting hook 23 and other related equipment and equipment are installed in factory beforehand and are completely sealed. Therefore, it is sanitary and effective for storing liquids, powders, and gases for food.

In the above-mentioned concrete structure B for the water storage tank, if an interior 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 and the like may occur. This interior material is to be prevented
As shown in FIG. 11, 25 is formed in a square shape, and a large number of support members 26 are protrudingly provided on the mounting surface side, and this support member 26 is embedded when the concrete outer wall layer 2 is formed. Further, the joints of the interior materials 25 may be sealed by welding or bonding as necessary.

In FIGS. 12 to 14, A is a double-frame concrete frame. As shown in FIGS. 2 and 3, a reinforcing bar 3 is arranged so that the reinforcing bar assemblies 1, 1 are double-spaced at a predetermined interval. And reinforced concrete 1,1
When the concrete outer wall layers 2, 2 and 2, 2 having a predetermined thickness are respectively formed on the outer peripheral portion of the above, a space portion is provided inside and the periphery is surrounded by these concrete outer wall layers 2, 2 and 2, 2. Thus, a box-shaped concrete frame A, which is a wall 29 composed of a double outer frame 27, an inner frame 28, and the space portions 5, 5, is constituted. A large space portion 30 is formed inside the space, and serves as a construction space for other structures, or becomes an integrated structure by filling with excavated soil, concrete, or the like.

This is used for large-scale structures such as tide breakwaters, breakwaters, floating islands, harbor structures, underground structures and underground foundations. Further, as shown in FIG. Attached to the lower end of the body 29 is a sharp portion 31, 31 that extends outward on the inside, and the concrete frame A is sunk to a predetermined ground and excavated, while the frame A is added to the upper part. It can be used for the submersible construction method that constitutes the structure, in this case, the thing formed in advance on land may be floated on the water and towed to the desired position, and if the space parts 5, 5 are filled with a floating body such as urethane, The frame A is more likely to float.

In addition, from the peripheral portions of the sharp portions 31, 31,
Excavation means (not shown) such as water or air is inserted into the space 5 of the frame A.
Drilling efficiency can be further improved if the gas is blown through.

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

A predetermined number of the concrete frames A constructed as described above are connected as shown in FIG. 12, or a required number of single frames are transported to the site, and as shown in FIG. A rectangular body is formed and the lower sharp parts 31, 31 are grounded to the ground.

When the rectangular body is formed by the frame body A, it is necessary to tightly seal the ends of the rectangular body with the connecting means 32 in a water and airtight manner. As shown in the figure, a connecting member in which the longitudinal grooves 33, 33 are provided at both ends of the frame A, and the longitudinal grooves 33, 33 are covered with a bag-shaped soft material 34 made of rubber, synthetic resin, or the like. When the filler 35 such as concrete, water, pressurized air or the like is sealed in the soft material 34 while the fitting 35 is inserted, the joints of the frames A, A are joined.

Then, the space portion 5 of the frame A is formed by the latent box method.
When excavation is carried out, it will be buried underground by the weight of the frame A, and even if a building such as an existing building is adjacent to the construction site, earth retaining work will be performed in advance as in the case of conventional foundation work. It is not necessary to cast a steel sheet pile, and the outer frame body 27 of the wall body 29 serves as a vertical retaining wall to prevent the collapse of earth and sand on the adjacent land, and the construction proceeds smoothly and safely.

Further, with the burial of the previous frame A, the space 5 is excavated while the next frame A is being piled up on the top of the frame A, thereby constructing a foundation having a predetermined depth.

Large space formed by double frame A
30 may be excavated after the frame A is buried in the ground. In the large space portion 30, if the concrete is cast all over, the strength is further improved as a foundation. This part can also be used in the basement depending on the
The space 5 is made of concrete for reinforcement, but can be used as a corridor or a small room by omitting the upper part.

[0046]

As described above, the method for manufacturing a concrete frame according to the present invention is capable of performing a completed structure having high accuracy and quality by a general worker, and is quick and simple with a simple work process. It can be formed at low cost.

After the construction of the building, the backfilling work can be performed at the site without waiting for the solidification of the concrete, so that the construction schedule can be greatly reduced.

Since the exterior decorative material is attached at the same time as the molding of the concrete frame, labor saving in construction can be achieved. And so on.

[Brief description of the drawings]

1 shows a concrete structure according to the present invention, wherein (a) is a perspective view and (b) is a longitudinal sectional front view with a part thereof omitted.

FIG. 2 is a longitudinal sectional front view partially showing the state of attachment of the concrete frame in FIG. 1;

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

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

5 (a) and 5 (b) are explanatory views showing a molding state of the concrete frame of FIG. 3, wherein (a) shows molding of a peripheral side portion of the reinforcing bar assembly, and (b) shows molding of a bottom portion of the reinforcing bar assembly.

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

FIG. 7 is an explanatory view showing still another example of the concrete structure in FIG. 1;

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

FIG. 9 is a sectional view showing a molding state of another example of the concrete structure in FIG. 1;

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

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

FIG. 12 is a perspective view showing still another example of the concrete structure in FIG. 1;

FIG. 13 is a sectional view in FIG.

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

FIG. 15 shows a connecting means of a concrete frame,
(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 Reinforcement assembly 2 Concrete outer wall layer 3 Reinforcement 4 Formwork 5 Space 6 Exterior decorative material 8 Solid body 27 Outer frame 28 Inner frame

Continuation of the front page (56) References JP-A-59-31347 (JP, A) JP-A-62-117938 (JP, A) JP-A-48-58609 (JP, A) JP-A-4-60044 (JP) , A) JP-A-4-309630 (JP, A) JP-A-64-43622 (JP, A) JP-A-56-61602 (JP, U) JP-A-5-21001 (JP, U) Registered utility model 361922 (JP, Z1) (58) Fields investigated (Int. Cl. ⁷ , DB name) E02D 27/01 E02D 29/00 E04G 9/00 E04G 11/30 E04G 21/02

Claims (1)

(57) [Claims] 1. A concrete mold in which the outer peripheral portions of an outer rebar assembly and an inner rebar assembly at predetermined intervals arranged based on the size and strength corresponding to the shape of a concrete structure to be molded are opened at the upper part. Attached inside the frame, forming a concrete outer wall layer of a predetermined thickness on each side surface of the outer and inner rebar assemblies to form a double outer frame and an inner frame, and forming the outer frame and the inner frame respectively. A method for manufacturing a concrete frame, wherein a space is provided inside the frame.