JPH11314215A - Manufacture of pc panel having right-angled crossing part - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the workability of a PC panel, its accuracy and the like by a method wherein tiles are arranged in a first form including longitudinal frames and lateral frames so as to place concrete in the first form in order to form PC panel and, after a demolding except the longitudinal frames is executed and then the PC panel is erected and linked to a second form and further concrete is placed in the second form in order to form a horizontal plate. SOLUTION: A first form including longitudinal frames 1 and lateral frames is framed on a plane so as to arrange tiles on the bottom surface part and side surface parts of the first form. Further, two rows of anchoring rebars 7 are disposed upright parallel to the lateral frames. After that, concrete is placed in the first form so as to form a PC panel 9. After that, the first from is demolded except the two longitudinal frames 1. Then, the PC panel 9 is erected vertically so as to link to a second from 11 framed separately. In this case, the anchoring rebars 7 are brought into a state being placed in the second form 11. After that, concrete is placed in the second form 11 so as to form an integral body, in which the horizontal PC panel and the vertical PC panel 9 meet at right angles, in order to form a PC panel having a T-shape section.

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 PC board having a right angle intersection.

[0002]

2. Description of the Related Art Generally, a PC board is used as a wall material, a floor material and the like, so that the PC board is formed into a flat plate shape. For example, a PC board used for a balcony is formed into a T-shaped cross section in which a vertical board serving as a handrail and a horizontal board serving as a floor intersect at a right angle.
In order to form a PC board having a T-shaped cross section, conventionally, for example, as shown in FIG. 9, a vertical plate form B for forming a vertical plate A serving as a handrail portion and a horizontal plate C serving as a floor portion are formed. A horizontal plate form D for molding is framed in a T-shaped section, and concrete is cast from above the vertical plate form B.

[0003]

However, according to the conventional molding method described above, the workability of cast concrete is poor because the inlet E of the vertical plate form B is narrow, and compaction during concrete casting is difficult. Insufficient, so-called "junka" or "su" defects that occur when the periphery of the cement paste is poor are likely to occur. Tiles F are arranged on the vertical formwork surface in the vertical formwork B. However, it is difficult to fix the tiles to the formwork surface. Since the upper end surface of the formwork B is the concrete inlet E, there is a design restriction on the tile application at the upper end portion, that is, the specification in which the tile G exists on the upper end surface as shown in FIG. 10 cannot be obtained. Further, there is a problem that the cost is increased due to the complicated structure of the mold.

The present invention has been made to solve all of the problems of the conventional molding method, and has a good workability of cast concrete without causing defects such as "junka".
It is an object of the present invention to provide a method of manufacturing a PC board having a right-angled intersection portion in which tile driving accuracy is improved, a tile is not restricted in design and tile form cost is reduced.

[0005]

As a means for achieving this object, the present invention is to form a first frame for forming a PC board including a vertical frame and a horizontal frame on a plane, and to form the first frame on a plane. The PC board is formed by placing tiles on the bottom and side portions in the mold frame of 1 and casting concrete, and after molding, the vertical frame is removed and the PC board is removed. This vertical plate is connected to a second formwork for forming a PC board which is separately formed as a vertical plate through the vertical frame, and concrete is poured into the second formwork to form a horizontal plate. Having a right-angled crossing part for integrating the vertical plate and the vertical plate into a T-shaped cross section
The gist is a method of manufacturing a plate. In the method of manufacturing a PC board, the gist is that the horizontal board and the vertical board are crossed and integrated into an L-shaped cross section.

[0006]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 shows an example in which the present invention is applied to form a PC board for a balcony having a T-shaped cross section. First, as shown in FIGS.
A first mold frame 3 for forming a C plate is framed on a plane.

Next, as shown in FIG. 2, a tile 4 is provided on the bottom surface of the first mold 3, an L-shaped tile 5 is provided on a corner at the boundary between the bottom surface and the side surface, and a tile 5 is provided on the upper side surface. The tiles 6 are arranged at regular intervals (joints). Further, FIG.
As shown in (a) and (b), the anchor reinforcing bars 7 are erected at important points in the first form 3 in two rows in a direction parallel to the horizontal frame 2. Then, concrete 8 is poured into the first form 3 and P
The C plate 9 is formed.

After the molding of the PC board 9, the first mold frame 3 is removed from the mold, leaving two vertical frames 1 as shown in FIG. 3, and formed at one end of the vertical frame 1 as shown in FIG. The hook 10 is hooked by using the hole 1a, and the PC board 9 is vertically raised and connected to the second frame 11 separately formed. The vertical frame 1 and the PC board 9 are connected to the insert bolts 12 when the concrete 8 is cast.
, It does not separate when the PC board 9 is started up.

In this manner, the PC board 9 is raised and turned into a vertical board. Unlike the conventional vertical board, the PC board 9 is formed by the first mold frame 3 framed on a plane as described above at the time of molding. Therefore, the work of placing concrete 8 can be performed efficiently, and the placement of the tiles 4 is also at the bottom surface in the first formwork 3, so that the precision of placing the tiles can be significantly improved. Furthermore, since the tiles 5 and 6 are located on the upper end surface when the PC board 9 is started, it is possible to adopt a specification in which tiles exist on the upper end surface, which is impossible with a conventional vertical plate. it can.

FIG. 5 shows a means for stably holding the PC board 9 that has been raised in a vertical state. The ribs formed at the lower end of the vertical frame 1 as shown in FIGS. 1b hole 1c
Then, the dowel 13a of the stand 13 is inserted to fix the lower end of the vertical frame 1, and the upper part of the vertical frame 1 is fixed to the support member 14 as shown in (b). As shown in FIG. 4, the support member 14 has substantially U-shaped support legs 14a opposed to the left and right sides of a bottom formed in a U-shape, and a mounting piece 15 is fixed to an upper end of the support legs 14a. By attaching the tip to the upper part of the vertical frame 1, the upper part of the vertical frame 1 is fixed. The bottom of the U-shape is also fixed with bolts to improve stability.

The second mold 11 is framed on a base 16 as shown in FIG. 4, and the ends of the opposing side frames 11a are respectively connected to and integrated with the vertical frame 1, and the second side 11a With the end frame 11b, three sides are surrounded, and the other end frame does not exist, and the PC board 9 takes charge of the end frame. Then, the anchor reinforcing bar 7 is in a state of being disposed within the second form 11.

As shown in FIG. 6, when concrete 17 is poured into the second mold 11, a horizontal PC board 18 is formed.
The horizontal PC board 18 intersects the vertical PC board 9 at right angles and is integrated. In this case, the horizontal PC board 1
The surface of 8 is stepped through a formwork auxiliary member 19,
In addition, a substantially columnar cushion material 20 is interposed in the front part.

When the vertical frame 1 and the second mold 11 are removed from the mold after molding, a PC board 21 having a T-shaped cross section as shown in FIG. 7 is formed, and the PC board 21 having the T-shaped cross section is used as a balcony. can do. The vertical PC board 9 serves as a handrail for a balcony, and the horizontal PC board 18 serves as a floor for a balcony. Through holes 21a and 21b remain at the positions of the insert bolt 12 and the cushioning material 20 of the formwork auxiliary member 19, which fixed the vertical frame 1, respectively.

Although not shown, the PC board 21 having a T-shaped cross section is incorporated in a predetermined place of the building, end plates are attached to both ends, the inner surface of the handrail and the surface of the floor are finished, and a balcony is provided. Complete. In this balcony, the handrails, that is, the vertical PC boards 9 are flat-punched as described above, so that the driving accuracy of the tiles 4 on the surface is high and the tiles 5 and 6 are located on the upper end surface of the handrails. It gives a good appearance and beautiful finish.

The present invention is not limited to the T-shaped section, but can be applied to a PC board crossing an L-shaped section as shown in FIG. In that case, the cost can be reduced because the formwork structure is further simplified.

[0016]

As described above, according to the present invention,
In the manufacture of PC boards having right-angled intersections, the vertical boards are formed on a flat surface, so that the workability of cast concrete and the accuracy of tile driving can be improved. Because of the position, there is no design restriction in tile pasting as in the prior art, and the mold structure is simpler than in the past, so that excellent effects such as reduction in cost can be achieved.

[Brief description of the drawings]

FIG. 1 shows a state in which a vertical plate of a PC board according to the present invention is formed on a plane, (a) is a plan view, and (b) is a cross-sectional view.

FIG. 2 is a partial cross-sectional view showing an arrangement state of tiles.

FIG. 3 is a plan view showing a state in which the first mold has been removed from the mold after forming the PC board, leaving the vertical frame.

FIG. 4 is a second frame in which a PC board is vertically set up and separately framed.
The schematic perspective view which shows the state combined with the formwork of FIG.

FIG. 5 shows a means for vertically holding a PC board.
(A) is a front view, (B) is a side view, and (C) is a sectional view taken along line XX of (A).

FIG. 6 is a view showing a state in which a PC plate having a T-shaped cross section is formed by forming a horizontal plate.

FIG. 7 is a perspective view showing a molded PC board having a T-shaped cross section.

FIG. 8 is a side view showing an example of forming an L-shaped section.

FIG. 9 is an explanatory view showing a conventional example.

FIG. 10 is a schematic sectional view showing an example in which a tile is present on the upper end surface.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Vertical frame 2 ... Horizontal frame 3 ... 1st formwork 4, 5, 6 ... Tile 7 ... Anchor reinforcement 8 ... Concrete 9 ... PC board 10 ... Hook 11 ... 2nd formwork 12 ... Insert bolt 13 ... Stand DESCRIPTION OF SYMBOLS 14 ... Support member 15 ... Mounting piece 16 ... Base 17 ... Concrete 18 ... PC board 19 ... Formwork auxiliary material 20 ... Cushion material 21 ... PC board of T-shaped cross section

Claims (2)

[Claims] 1. A first mold for forming a PC board including a vertical frame and a horizontal frame is framed on a plane, and tiles are arranged on a bottom surface and a side surface in the first mold. A PC board is formed by pouring concrete, and after the forming, the vertical frame is released while leaving the vertical frame, and the PC board is set up as a vertical board to form a second frame for forming a PC board separately. The horizontal plate and the vertical plate are integrated into a T-shaped cross section by joining the vertical frame and casting concrete in the second form to form a horizontal plate. A method for manufacturing a PC board having a right angle intersection. 2. The method according to claim 1, wherein the horizontal plate and the vertical plate intersect at an L-shaped cross section and are integrated.