JPH0431927Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Sector) The present invention relates to the structure of a permanent formwork for composite plate load-bearing walls that also serves as formwork for buildings, etc.

(Prior art) If the current load-bearing walls of buildings are made of reinforced concrete, it is necessary to assemble a large amount of formwork made of plywood boards and pour concrete inside, or to use it as a load-bearing wall.
When using the PC method (precast concrete method), a large lifting machine is required due to the heavy weight of the PC board, and welding is required to join the joints of adjacent PC boards.

(Purpose of the invention) The purpose of the invention is to reduce the construction period by eliminating the need for almost any formwork material, and by reducing weight and omission.

(Structure of the invention) The invention consists of two thin-walled composite plates formed by mixing steel fibers into concrete and arranged in parallel with an interval for concrete pouring, and a part with an overhanging part. It is equipped with a large number of vertical bars and horizontal bars arranged within the above-mentioned intervals, and a large number of rod-shaped separators that connect both thin-walled composite plates in a posture perpendicular to both thin-walled composite plates, and one end of the separator is attached to one of the thin-walled composite plates. Embedded in the board, the other end of the separator is a permanent formwork for a composite board load-bearing wall that is fixed to the other thin composite board with an adhesive.

(Example) Fig. 1 is a schematic front view showing the state of the permanent formwork 1 for load-bearing walls made of composite plates according to the present invention during construction after being carried to the construction site. 2 and 3 in a vertical position by a lifting machine (not shown), and is about to be lowered onto a row of anchor bars 5 projecting upward from the slab 4. The right side permanent formwork 1' for the load-bearing wall is set on the slab 4 and maintained in a vertical position by two erection supports 6. 7 is the thin composite board on the front side of the set of two, which is formed into a thin plate by mixing steel fibers into concrete. 8 is a horizontal stripe, and 9 is a vertical stripe.

In Fig. 2 showing the − cross section of Fig. 1, 1
The pair of composite plates 7 and 7' are held between foot fixing angles 11 and 11' fixed on the slab 4, and one of the composite plates 7 has a number of separator plate fixing hardware 12 whose heads at one end are preset at right angles. The distal end of the separator 12 is bonded to the inner surface of the other composite plate 7' at the portion 13, so that both composite plates 7, 7', the horizontal strips 8, and the vertical strips 9 form a hollow integral body. forming a structure. FIG. 3 is a schematic front view showing the interior of the permanent formwork 1 for a load-bearing wall with a part of one of the composite plates 7 cut away.

FIG. 4 is a drawing corresponding to FIG. 2 for showing another embodiment, and in FIG. 4, vertical stripes 9 are arranged in two rows. The adhesive portion 13 between the separator 12 and the composite plate 7' is made of, for example, an epoxy adhesive. 14 is a distance between both composite plates 7, 7' and is held in a predetermined position by a separator 12. 28 is an anchor nut, and 15 is a bolt for fixing the foot fixing angle 11.

As shown in FIG. 5, the erection support 6 has a lower end connected to a support receiving embedded hook 16 on the slab 4,
The upper end is connected to a hook 18 screwed onto a fixed metal fitting 17 which also serves as a separator. In order to fix the hooks 18, horizontal through holes can also be formed in the composite plates 7, 7' in advance (or in the field). The fixed hardware 17 includes a long nut portion 19. 20 is a plywood formwork for forming the beam; 21 is a support for supporting the formwork 20;
22 is a formwork for forming the upper floor slab 23, and the space within the formworks 22, 20 communicates with the space 14 inside the permanent formwork 1 for load-bearing walls.

As shown in Figure 6, the adjacent permanent formwork 1 for load-bearing walls,
1' is provided with a gap L1, which is closed by a plate joint form 25 made of plywood or other material as shown in FIG.
L2 is the reinforcing bar joint length, which is obtained by combining the transverse bars 8, 8' (length L3) extending laterally from both composite plates 7, 7'. Reference numeral 26 in FIG. 6 is a strap for forming a column, and in order to avoid interference with the strap 26, no transverse reinforcement protrudes from the right edge of the composite plate 7'. In order to firmly connect the columns formed by the tie bars 26 and the permanent formwork 1' for the load-bearing wall, for example, a reinforcement 27 as shown in the lower right of Fig. 6 is suspended from above the tie bars 26, and the permanent formwork 1' for the load-bearing wall is A reinforcing bar joint is formed by shifting it toward the formwork 1'. 30 is a column main reinforcement.

After assembling the permanent formwork 1 for a load-bearing wall, the formwork 20 for a beam, and the formwork 22 for a slab as shown in FIG. 5, concrete is placed within the internal gap 14. Then, the concrete within the interval 14 and the composite plate 7 on both sides,
7', internal horizontal stripes 8, vertical strips 9, separator 1
2 (Figures 1, 2, and 4) are joined together to form a strong wall.

(Effects of the invention) As explained above, according to the invention, a pair of parallel thin composite plates 7, 7', vertical bars 9, horizontal bars 8, and separators 12 are used to form hollow composite plate permanent formworks 1, 1 for load-bearing walls. ′ is formed, so the manufacturing process up to that point can be carried out in a factory, transported to the site, erected, and poured concrete, so there is almost no need for formwork materials. , the weight is conventional
It can fit into less than 1/4 of the PC board. Furthermore, significant labor savings and shortened construction times can be expected, making it possible to reduce costs. Furthermore, according to the present invention, the thin-walled composite plates 7, 7' themselves can be made particularly thin and strong by incorporating steel fibers, and the permanent formwork for load-bearing walls of composite plates that are hollow and can also be used as formwork can be greatly improved as a whole. In addition, the permanent formwork for composite plate load-bearing walls according to the present invention is easy to manufacture.In other words, when making one composite plate 7, it is only necessary to embed the head of the separator 12 in advance, and the other composite plate 7' is Since it is not necessary to embed the tip of the separator 12 when forming the composite plate 7', it is sufficient to form the composite plate 7' into a simple flat plate shape, making it easy to manufacture the composite plates 7, 7'.
Also, when assembling, attach the tip of the separator 12 to the portion 13.
It is only necessary to adhere it to the composite plate 7', and almost no jig is required. Also, since some of the horizontal strips 8 and vertical strips 9 are pre-extruded from the gap 14 between the two composite plates 7 and 7',
When joining adjacent hollow load-bearing walls in a plane, there is no need to incorporate separate vertical and horizontal reinforcements, which also facilitates manufacturing.

Moreover, the separator 12 includes both thin composite plates 7,
The separator 12 is a rod-shaped member that connects the thin composite plates 7, 7' at right angles to the thin composite plate 7'. Since the separator 12 is fixed to the other thin-walled composite board 7 with adhesive, if the separator 12 is embedded in the correct posture and position during manufacturing of one thin-walled composite board 7 during the factory manufacturing process, the other thin-walled composite board 7 When adhering the ends of the separator 12 to the composite plate 7, it can be easily adhered to an accurate position, and since one end is embedded, the durability is higher than that of a structure in which both ends are adhered.

[Brief explanation of the drawing]

Fig. 1 is a schematic front view showing the state under construction, Fig. 2 is a schematic cross-sectional view of Fig. 1, Fig. 3 is a partially cutaway front view, and Fig. 4 shows another embodiment. FIG. 5 is a sectional view during construction, FIG. 6 is a detailed construction guide, and FIG. 7 is a horizontal sectional view of the joint part. 1,1'...Permanent wall formwork for composite board load-bearing walls, 7,
7'... Thin composite board, 8... Horizontal stripes, 9... Vertical stripes,
12...Separator.

Claims (1)

[Scope of utility model registration request] two thin-walled composite plates 7, 7' formed by mixing steel fibers into concrete and arranged in parallel with an interval 14 for concrete pouring;
A large number of vertical strips 9 and horizontal strips 8 are arranged within the above-mentioned interval 14 with a partially overhanging portion, and both thin composite plates 7,
A large number of rod-shaped separators 12 connect the two thin composite plates 7, 7' at right angles to one thin composite plate 7.
The other end of the separator 12 is fixed to the other thin composite plate 7' with an adhesive.