JPS6133079Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a receiving form frame for packing concrete, which is used to fill the gap between a retaining wall and a raised material, mainly in underground excavation work and the like.

In underground excavation work, as shown in Figure 1, parent piles 1, 1 are erected underground at required intervals, and horizontal sheet piles 2 are inserted between each parent pile 1, 1 to form a retaining wall A. Each parent pile is connected with a raised member 3, so that lateral pressure as shown by the arrow is transmitted to the strut via the raised member 3. However, in actual construction, it is not possible to align the main piles 1, 1 in the horizontal direction from the viewpoint of construction accuracy, and a certain amount of gap B is created between the main piles 1 and the raised material 3. It is something that can be done in places. Therefore, this gap B is filled with concrete in order to transmit the lateral pressure to the struts via the raised members 3.

In order to fill the gap B between the parent pile 1 and the raising material 3 with concrete, it has conventionally been done by installing a wooden formwork or Styroform formwork, or by using an EP bag. Ta. However, the former two methods are very time-consuming and have problems in disposing of waste material after demolding, and the method using an EP bag has the problem that it is difficult to ensure a sufficient contact area.

This idea uses a reinforced and waterproofed cardboard paper board as a formwork board, attaches multiple reinforcing wires to the formwork board along its longitudinal direction, and connects both ends of the reinforcing wires to both ends of the formwork board. By making the formwork board protrude long from the base pile, inserting it into the gap between the parent pile and the raising material by bending it appropriately, and supporting the formwork board by connecting it to the raising material etc. using the reinforcing wire, this method can be improved. It solves the problem of, is cheap and disposable,
Another object of the present invention is to provide a formwork for packing concrete that is extremely easy to turn and is economical.

Hereinafter, embodiments of this invention will be described with reference to the drawings.

Figure 1 is a perspective view showing the bent formwork, and Figure 2 is an enlarged perspective view of the main parts of the formwork. A material that can be produced at low cost, is lightweight, and has the strength to withstand the load of poured concrete.
For example, it is formed into a rectangular shape by using a reinforced or waterproofed cardboard board, and a fold line (not shown) in the width direction is provided as necessary. A plurality of reinforcing wires 5, 5 are attached to the form plate 4 along its length. As the means for attaching the reinforcing wire 5, since the formwork plate 4 is made of cardboard, flat plates 4a, 4a on both sides thereof are used.
It is sufficient to insert the reinforcing wire 5 through the grooves of the corrugated plate 4b between the corrugated plates 4a, and no other special fastening means is required. However, the method is not limited to this method, and, for example, the reinforcing wire 5 may be attached to the surface of the form board 4 by an appropriate method.
Further, the formwork board 1 may be provided with a reinforcing material such as a mesh board, if necessary.

The formwork of this invention is constructed as described above, and in order to use it, the formwork plate 4 is bent into a U-shape as shown in Fig. 2 and adjusted to the required width, as shown in Fig. 4. Insert it into the gap B between the main stake 1 and the upholstery material 3 as shown, and hook the protruding part of the reinforcing wire 5 that is closer to the upholstery material 3 to the flange 3a of the upholstery material as shown in the figure. At the same time, the remaining reinforcing wires 5 are tied together 6. Then, concrete 7 is filled into the formwork plate 4 surrounded by the U-shape. In this case, the formwork plate 4 is supported by the reinforcing wire 5 hooked to the flange 3a, so it will not fall off, and the formwork plate 4 is The upper end of is not flared outward.

As explained above, the formwork of this invention is a rectangular formwork board made of reinforced and waterproofed corrugated paperboard, and a plurality of reinforcing wires are attached along the length of the formboard, and the reinforcing Since both ends of the wire protrude outward from the ends of the formwork board, it can be adapted to a wide range of widths by simply bending and cutting the wire according to the size of the gap between the main pile and the upholstery material. It has many excellent effects, such as being easy to install, inexpensive to manufacture, disposable, no need to remove formwork, and extremely low construction costs.

[Brief explanation of drawings]

Figure 1 is a plan cross-sectional view showing the outline of underground excavation work, Figure 2 is a slope view showing the implementation of this devised formwork, Figure 3 is an enlarged slope view of the same main part, and Figure 4 is this devised formwork. FIG. 3 is a perspective view showing the frame in use. 1...Main stake, 2...Horizontal sheet pile, 3...Horizontal material,
4... Form board, 5... Reinforcement wire, A... Stopping wall,
B...Gap.

Claims (1)

[Scope of utility model registration request] A complement of reinforcing wires are attached along the length of a rectangular form plate made of reinforced and waterproofed corrugated paperboard, and both ends of the reinforcing wires are inserted outside the edges of the form plate. A formwork for concrete concrete that is characterized by a long protrusion in the opposite direction.