JPH0240820B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a formwork assembly method for pouring concrete.

In conventional formwork construction methods of this type, panel-shaped formwork face plates are first connected and assembled, and then end pieces are attached to reinforce the formwork. , it is necessary to connect the formwork face plates to each other, which is not only cumbersome and time-consuming, but also the overall accuracy is determined by the accuracy of the connection of the formwork face plates, and therefore,
Process and construction management must be strictly carried out.
After all, the drawback is that the construction costs are extremely high.

In addition, as a method different from this,
Publication No. 18225 describes a construction method in which frames of an internal formwork and an external formwork are first formed, and internal and external formwork face plates are attached to these frames, respectively. However, this construction method has the disadvantage that if formwork face plates are attached to both the inside and outside of the frame, the frame will be buried in the poured concrete, making it impossible to reuse the frame. On the other hand, if a frame for the inner formwork and a frame for the outer formwork are constructed, a formwork face plate is attached to each frame, and these frames are located outside the formwork, such a structure can be achieved. This problem can be solved, but this requires two frames, one for the inside and one for the outside, which increases the cost and makes the work extremely difficult as the formwork must be carried between each frame. There is a drawback.

On the other hand, instead of the method of attaching a large number of formwork faceplates as described above, it is possible to manufacture formwork faceplates in advance that cover at least one wall and have high strength, and then transport these formwork faceplates to the site. There is an assembly method, and in this case, sufficient strength can be obtained simply by interconnecting the large formwork face plates, so there is an advantage that the above-mentioned framework is not required, but on the other hand,
Since the formwork face plate is large, it is inconvenient that it is very difficult to carry it to the site and remove it.

The present invention eliminates such conventional drawbacks and provides a new formwork assembly method that can be performed with simple work, high precision, and at low cost in a method of assembling a large number of face plates on site. It was done for that purpose.

In order to achieve the above object, in the present invention, the corner studs are used as supports, horizontal beams are constructed between each corner beam, and the space surrounded by the horizontal beams and corner beams is provided. After passing the braces to form a frame, a formwork face plate is brought into contact with the outer surface of the horizontal end piece, and a separator inserted into the formwork face plate from the outside and a form tie inserted into the horizontal end piece from the inside are attached. An inner formwork consisting of a large number of formwork faceplates is assembled by fastening the formwork faceplates together, and on the outside of this inner formwork, the tips of the separators are inserted into the connection holes of the outer formwork faceplates. The present invention is characterized in that an outer mold consisting of a large number of mold face plates is assembled by inserting the separator and fixing the mold face plate with a fixed metal fitting attached to the tip of the separator.

Hereinafter, the construction method of the present invention will be explained based on an illustrated embodiment. First, as shown in FIG. , a predetermined number of horizontal studs 2, 2... are installed, and in the space surrounded by the corner beams 1, 1 and the uppermost and uppermost horizontal beams 2, 2, horizontal and vertical tumble-type braces 3, 3 are connected to form a frame 4 of a frame type. As shown in FIG. 4, a bolt 5 is provided protruding from the lower end of each corner end 1, and level adjustment is performed by adjusting this bolt 5. FIG. 2 shows an example of a method of connecting the braces 3 to each of the end pieces 1 and 2. First, the corner end 1 is provided with an outward U-shaped connecting fitting 6 at a predetermined height position. are fixed to each other, and pin holes 7, 7 are formed in the upper and lower pieces of this connecting fitting 6, respectively. On the other hand, a pin hole 8 corresponding to the pin holes 7, 7 is formed at the end of the horizontal end thick 2,
This end is inserted between the upper and lower pieces of the U-shaped connecting fitting 6, and a pin 9 is inserted from above into each of the pin holes 7 and 8 to connect the horizontal ends 2. Furthermore, L-shaped connecting fittings 1 with an L-shaped horizontal cross section are installed at the upper and lower ends of the corner end 1.
0 is fixed thereto, and the brace 3 is connected using a connecting hole 11 formed in one piece. In addition,
Instead of such a tambuckle type brace 3,
A square-shaped brace may be attached between the horizontal end pieces 1 and 1 at each corner. Furthermore, it is not possible to prevent vertical end pieces from being installed in the middle between the corner end pieces 1, 1.

Now, after forming the framework 4 as described above,
On the outside of this frame 4, as shown in FIG. 3, a large number of face plates 12 of the inner formwork are attached. FIG. 5 shows a method for attaching these formwork face plates 12. First, a large number of connection holes 13 are formed in the horizontal edge 2 at predetermined intervals in the longitudinal direction, penetrating inside and out. Correspondingly, connecting holes 14 are also formed in the formwork face plate 12, and these connecting holes 13, 14
are adapted to each other, and the formwork face plate 12 is brought into contact with the outer surface of the horizontal edge 2. 15 has a male thread 16 at its end.
The separator 17 is a form tie with a female thread 18 formed on one end thereof, and the end of the separator 15 is inserted into the connection holes 13 and 14 from the outside of the form face plate 12, and the female thread of the form tie 17 is 18 side end into the connecting hole 13 from inside the horizontal end 2, and then insert the female screw 18 into the male screw 1 of the separator 15.
6 and tighten to connect them to each other, thereby fixing the formwork face plate 12. 19 is a washer inserted into the other end of the form tie 17, and 20 is a bolt-shaped head similarly provided at the inner end of the form tie 17.

After assembling the inner formwork A by arranging a large number of formwork face plates 12 in parallel in the wall direction as described above, as shown in FIGS. 6 and 7, a large number of outer formwork face plates 21 are attached to the outside. Assemble formwork B. FIG. 7 shows how to attach the separator 15. Pass the outer tip of the separator 15 through the connection hole 22 of the formwork face plate 21, and insert the U-shaped fixing hardware 23 into the separator 1 from the outside.
5 to the tip to fix the formwork face plate 21.
Reference numeral 24 denotes an outer horizontal end that is fitted into this U-shaped fixed hardware 23. Furthermore, on the outside of this horizontal end 24, wedges 25 are driven into the upper and lower pieces of the U-shaped fixed hardware 23, and wedges 25 are driven into the upper and lower pieces of the U-shaped fixed hardware 23. Therefore, the horizontal end thick 24 is fixed.

In addition, in FIG. 6, 26 indicates the inner and outer formwork 1.
Satsushi interposed between 2 and 21, 27, 27
are internal and external support frames that hold the sash 26 and are located between the sash 26 and each mold face plate 12, 21. Further, as shown in FIG. 6, a horizontal edge 2 separate from the frame 4 is attached to the inner side of the inner frame face plate 12 that projects upward from the frame 4. FIG. 7 shows the state of concrete 30 being placed.

Finally, as shown in FIGS. 7 and 8, a slab end 28 is constructed on the innermost horizontal end 2, and a slab panel 29 is laid on its upper surface.

According to the present invention as described above, unlike the conventional construction method in which the formwork is first connected to each other and then reinforced with shafts, there is no need to connect the formworks, and even the inner shafts can be precisely raised. Once this is done, all you have to do is attach the formwork face plate using the connection holes made in the inner end, and you will automatically be able to obtain a highly accurate product, which eliminates the need for detailed process control like in the past. , which has the effect of being able to be constructed in a short period of time at low cost.
In addition, in conventional assembly methods, if dust or other debris adheres to the connecting end of each formwork, this will affect accuracy and require early replacement, but with the present invention, such debris can be removed in advance. If other adhesion is anticipated and the formwork is installed with enough room between each formwork to prevent concrete from leaking, it can be used repeatedly over a long period of time and is advantageous in terms of material costs. Furthermore, in the present invention, the inner formwork is assembled on the outside of the frame, and the outer formwork is further assembled on the outside of this inner formwork via a separator, so that the frame only needs to be assembled on the inside, and , there is no need to carry the formwork face plate between the frames, and compared to the conventional case where frames are installed on both the inside and outside, not only the cost and material cost for assembling the frame is reduced, but also the frame is made of concrete. It has the advantage that it can be reused because it is not buried in the ground. Of course, since the present invention does not use a large integral formwork face plate, it is easy to carry it to the site and remove it.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing the assembled state of the frame, Fig. 2 is an enlarged perspective view of the main parts showing the method of connecting the side beams and braces, and Fig. 3 is a perspective view showing the state in the middle of installing the inner formwork. Figure 4 is an enlarged longitudinal sectional view of the lower end of the corner end, Figure 5 is an enlarged longitudinal sectional view of the main part showing how to install the inner end, and Figure 6 is an enlarged longitudinal sectional view of the lower end of the corner end. FIG. 7 is a perspective view showing the condition, and FIG.
The figure is a perspective view showing a state in the middle of installing a slab panel. A...Inner formwork, B...Outer formwork, 1...Corner end, 2...Horizontal end, 3...Brace, 4...
Frame, 12... Inner formwork face plate, 15... Separator, 17... Form tie, 21... Outer formwork faceplate, 23... Fixing hardware.

Claims (1)

[Claims] 1. After forming a frame by using the corner beams as supports, installing horizontal beams between each corner beam, and passing braces into the space surrounded by the horizontal beams and corner beams, the above-mentioned A formwork face plate is brought into contact with the outer surface of the horizontal crosspiece, and a separator inserted into the formwork faceplate from the outside and a form tie (registered trademark) inserted into the horizontal crosspiece from the inside are tightly tied together to form the formwork. By fixing the face plates, an inner formwork consisting of a large number of formwork face plates is assembled, and on the outside of this inner formwork, the tip of the separator is inserted into the connection hole of the outer formwork face plate, and the tip of the separator is A formwork assembly method characterized by assembling an outer formwork consisting of a large number of formwork faceplates by fixing the formwork faceplates with fixing hardware attached to.