JPH082528B2 - Concrete board manufacturing method - Google Patents

Description

The present invention relates to a method for producing a concrete plate such as a precast concrete plate (hereinafter referred to as a PC plate) used in a building structure such as a floor plate, a wall plate or a ceiling plate. Regarding

(Prior Art) In reinforced concrete buildings such as condominiums and office buildings, many PC boards manufactured in advance in factories are used to improve work efficiency at construction sites. In this PC board, a supporting member for attaching electric wiring, communication cables, water and sewer pipes, etc. (hereinafter referred to as "preliminary parts") is partially embedded in the PC board with its part exposed.

This PC board is manufactured according to the floor plan of each floor, but the layout of the water around the kitchen or bathroom in the floor plan, or the installation position of lighting equipment and electrical equipment for offices, etc., is the horizontal direction of the floor on the same floor. Although different, it is often the same on each floor.

In such a case, if PC boards are manufactured in advance for each floor plan required for each floor, the production efficiency will improve, but in reality, each floor plan PC board for each floor will be installed,
Since we are going to work on the upper floor while securing a construction workshop, there was a problem that we needed a storage place to store the PC board manufactured in advance until it was needed.

Therefore, conventionally, the PC board was manufactured as follows. Explaining this with reference to FIGS. 5 to 6, a PC for each floor plan (a), (a), (c) ... of a predetermined floor.
In order to manufacture the board, (a) first assemble the formwork in the original size according to the shape of the floor plan (a) 9, (b) from the design drawing, the mounting position of the front end part of the floor plan (a) 9 is the original size. The size is used to write in black on the form board (hereinafter referred to as “inking out”), (c) the pre-attached parts are installed at the mounting positions of the form board, (d) the reinforcing bars are reinforced, and (e) concrete is placed (F) After curing the cast concrete, it is demolded, and the PC board for floor plan (a) 9 is completed as described above.

Then, after that, the mold is reassembled according to the shape of the floor plan (a), and the above-described work steps (b) to (f) are similarly performed to complete the PC board for the floor plan (a). C) PC boards for floor plan (f) are manufactured in the same procedure. After that, these PC boards are transported to the construction site and installed by a crane.

When the construction work further progresses and reaches the upper floor, the above-mentioned floor plans (A), (A), ... The above-mentioned floor plans (A), (B), ... A PC board was manufactured by repeating the manufacturing procedure, the PC board was transported to a construction site, lifted by a crane and installed, and the buildings were sequentially completed on the upper floors.

(Problems to be solved by the invention) However, in the above-described conventional method for manufacturing a concrete board such as a PC board, the mounting position of the pre-attached component is copied in black on the form board after assembling the form frame having a predetermined floor plan shape. There is a marking work, and this marking work took a lot of time because the mounting position of the leading component was copied while reading the dimensions from the design drawing.

In addition, since the marking work is performed for each different floor plan, it is easy to make an error in reading and copying the mounting dimensions of the leading component.

If the construction work progresses further and reaches the upper floor, the above marking work must be repeated when manufacturing PC boards with different floor plans for each upper floor, and the marking time will be great and the marking work There was a problem that mistakes increased more and more.

The present invention has been made in view of such a problem, and aims at improving productivity of concrete boards such as PC boards by shortening the staking out work time, and reducing the stakeout work mistakes. The present invention provides a method for producing a concrete board such as a PC board.

(Means for Achieving the Object) The means for achieving the above-mentioned object of the present invention is that the surface of a flexible sheet made of synthetic resin, which has a floor plan common to a plurality of floors of a building, is formed into an actual size outside shape. , The attachment position of the pre-attached component is described in full size, and holes of different shapes are bored at the attachment position of the pre-attached component depending on the type of the pre-attached component, and a part of the flexible sheet for each floor plan When it is not in use, it is rolled up into a work sheet that can be stored, and the work sheet is placed on the base plate of a form frame assembled to the actual size outside shape with the same floor plan. The mounting position and the hole shape of the attached component are copied on the base material with a marking material, the work sheet is removed from the mold, and then the attached component is attached on the substrate and marked with the attached component. Installed the type of pre-installed parts according to the shape of the hole After that, a concrete manufacturing method is characterized in that concrete is placed by arranging reinforcing bars, and the cast concrete is cured and then demolded.

(Operation) According to the above manufacturing method, therefore, work sheets suitable for each floor plan are prepared respectively, the mold is assembled into a predetermined shape, the work sheet having the predetermined shape is placed on the substrate of the mold, and the work is performed. The mounting position of the prefabricated component described on the sheet is copied onto the substrate with a marking material such as black ink or chalk. At this time, since the hole shape copied on the board is a shape corresponding to the type of the pre-attached component, at a glance, where is the pre-attached component of the same type among the plurality of pre-attached components arranged? Is understood. Furthermore, the whole work sheet can be rolled up and stored and stored in a narrow space, and since each work sheet for different floor plans has an identification symbol, it is easy to manage and the desired work sheet can be stored accurately from the storage location. It can be quickly taken out and used.

Next, the work sheet is removed from the formwork, and the prefabricated part is installed at the prefabricated part mounting position copied on the formwork substrate.

Then, concrete is poured by arranging the reinforcing bars, and after the concrete is cured, the concrete is finished by removing the mold. Since the work sheet removed from the mold is a flexible sheet, the work sheet is folded or rolled and stored until the next use.

Then, when the construction work further progresses to the upper floor and the concrete board such as the PC board for each floor plan on that floor is manufactured, the work sheet is carried out from the storage place and placed on the formwork board as described above. To use.

(Embodiment) An embodiment according to the present invention will be described with reference to FIGS. 1 to 4 and 6.

Reference numeral 1 is a work sheet used for the floor plan (a) 9. The work sheet 1 is a flexible sheet made of vinyl chloride, and has the same shape as the floor plan (a) 9 and the size of the original size.

Then, on the surface of the work sheet 1, the attachment position of the pre-attached component 2 is described by the original dimensions L ₂ , L ₄ ...

Holes 3, 4, and 5 are provided at the mounting position. The hole 3 shows a position for mounting the insert part 6, the hole 4 shows a position for mounting the sleeve 7, and the hole 5 shows a position for mounting an electric box (not shown). The holes 3 at the mounting position have different shapes such as a round shape and the holes 4 have a quadrangular shape for the purpose of clearly discriminating different mounting parts 2 to be mounted. Further, it shows that the same type of pre-attached component 2 is attached to the same hole shape.
Reference numeral 8 denotes an identification symbol, which indicates that it is a work sheet for the floor plan (a) 9, and is described for the convenience of storage and operation of the work sheet 1. In this way, work sheets (not shown) for the other floor plans (a), (c) ... Are also prepared in advance.

 Next, a procedure for manufacturing the PC board 10 will be described.

Assemble the formwork 11 of the floor plan (A) 9. The work sheet 1 made in advance is installed by aligning it with the substrate 12 of the frame 11. Then, appropriate weights (not shown) are placed on the work sheet 1 at several places so that the work sheet 1 does not float up.

Then, a chalk is traced along the shapes of the holes 3, 4, and 5 provided in the work sheet 1 to make a mark on the substrate 12 of the previous period. Then, the work sheet 1 is removed from the form 11. Then, the work sheet 1 is rolled into small pieces and stored until the next use.

Next, insert part 6 is inserted into round hole 3, sleeve 7 is inserted into square hole 4, and electric box (not shown) is inserted into hole 5. Install on top of 12. Then, the truss bars 13 and the reinforcing bars 14 are arranged.

After that, concrete 15 is placed in the form frame 11, the concrete 15 is cured and then demolded to complete the PC board 10 for the floor plan (a).

Then, a PC board for the floor plans (a), (c) ... is manufactured in the same manner as the PC board manufacturing procedure using the above-described work sheet (not shown) made in advance.

Furthermore, the same PC board manufacturing procedure as described above is repeated for each upper floor.

As a result of carrying out a test in this way, conventionally, it took about 30 to 60 minutes to carry out the marking-out work in one mold, but the use of a work sheet reduces the marking-out work time to about 1 minute. It was about 2 minutes, which was a great reduction. Moreover, since the hole positions on the work sheet are only marked, there are almost no mistakes in work.

As described above, in the above embodiment, the material of the work sheet is not particularly limited as long as it is flexible and easy to handle, and more specifically, a synthetic resin material such as vinyl chloride or polypropylene is preferable.

Further, in order to show the mounting position of the pre-attached component, in the above-mentioned embodiment, the circular or quadrangular hole is provided on the work sheet, but the attachment position of the pre-attached component described on the work sheet is marked by an appropriate marking means. Since it suffices to be copied on the frame substrate, it is needless to say that the display method of the mounting position of the leading component can be appropriately changed by means such as transfer means or pressure contact means instead of providing the holes.

(Effects of the Invention) According to the present invention, in manufacturing a concrete plate such as a PC plate, a work sheet indicating a mounting position of a leading component is made in advance and the mounting position of the leading component is marked on the formwork substrate with this working sheet. Compared with conventional marking work, the work time is greatly shortened, the productivity of concrete boards such as PC boards is greatly improved, and it is not necessary to read the dimensions from the drawing by using the work sheet. It has the effect of significantly reducing work mistakes, and the hole shape copied on the board is a shape that corresponds to the type of pre-attached parts, so at first glance it is possible to select the same type among multiple pre-attached parts. By knowing where the pre-mounted parts are placed, the work of installing the pre-mounted parts is easy and the construction period is shortened. In addition, since the work sheet is a flexible sheet, it is extremely easy to transport and store, and the work can be performed many times. Sheet Since it can be used, it has a remarkable effect in improving the productivity of concrete boards such as PC boards and reducing work mistakes.

[Brief description of drawings]

1 to 4 show an embodiment of the present invention. FIG. 1 is a plan view of a work sheet, FIG. 2 is a perspective view showing the same use example, and FIG. 3 is a sectional view of a PC board. FIG. 4 is a block diagram showing a PC board manufacturing method, FIG. 5 is a block diagram showing a conventional PC board manufacturing method, and FIG. 6 is a perspective view showing a floor plan of each floor of a building. 1 ... Work sheet, 2 ... Prefabricated parts 3,4,5 ... Hole, 9 ... Floor plan 10 ... PC board, 11 ... Formwork 12 ... Board

Claims (1)

[Claims] 1. A mounting position of a leading component is described in full scale on the surface of a flexible sheet made of a synthetic resin, which has a floor plan common to a plurality of floors of a building and has an actual size outside shape. A hole with a different shape is punched at the mounting position according to the type of pre-attached part, and an identification symbol for each floor plan is attached to a part of the flexible sheet, and when not in use, the whole is rolled and stored. The work sheet is squeezed into a possible work sheet, the work sheet is placed on a board of a form frame assembled in the actual layout with the same floor plan, and the mounting position and hole shape of the pre-attached component are copied on the board with a marking material, After removing the work sheet from the formwork, at the attachment position of the attachment component copied on the substrate, and after installing the attachment component of the type corresponding to the shape of the marked hole, rebar Placing concrete by placing it, etc. A method for producing a concrete plate, which is characterized in that it is formed by demolding after curing concrete.