JPS624587Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a porous metal formwork plate that is stretched as a back formwork on the outer surface of back-filling chestnut stone in retaining wall construction, lining, etc.

Conventionally, construction of retaining walls and lining of slopes in rivers, ports, roads, etc. has been carried out on the cutting surface 1 as shown in Figure 1.
A wire mesh 3 is stretched over the outer surface of the back-kuri stone 2 installed in the facility, and concrete is poured directly onto the front surface of the back formwork. A construction method in which concrete 5 is placed between the holes 4 and 4 is generally adopted.

However, the wire mesh 3 used in the above method
This is simply a planar weaving of a large number of iron wires or wires, and each iron wire or wire is not interconnected metallographically, so the bending rigidity is low both partially and as a whole. It was weak and could not stably hold the outer surface of the chestnut stone 2 in a flat plane, resulting in poor construction accuracy. In addition, the wire mesh 3 had the drawback of extremely poor workability because it was rolled out in thick rolls at the site.

Therefore, the inventor of the present invention recently devised a construction method using an expanded metal plate, which can be manufactured at low cost and has relatively high bending rigidity both partially and as a whole, in place of the above-mentioned wire mesh, which has many drawbacks. but,
Due to the limited manufacturing dimensions of expanded metal plates, in order to use this as the back formwork, construction must proceed while connecting many of the expanded metal plates. For example, a root stone is placed on the poured foundation concrete 6 shown in FIG. After backfilling the chestnut stone 2 between the metal mold plate and the porous metal form board,
The masonry retaining wall is successively built upward by repeating the work of pouring concrete 5 in between, but in order to raise the height of the perforated metal formwork plates in sequence, it is necessary to place the lower perforated metal formwork plates and The abutting edges of the upper perforated metal formwork plates must be tied at predetermined intervals in the longitudinal direction and connected each time with wire, etc., making the raising work extremely troublesome and time-consuming, reducing construction efficiency. The disadvantage is that it is not very good.

The present invention was made in order to solve the above-mentioned drawbacks, and by devising the structure of the reinforcing edge material that reinforces the edges of the rectangular expanded metal plate formed to the required size, the porous metal formwork It is an object of the present invention to provide a perforated metal form board which is characterized by the structure of the board, and which allows for extremely easy and efficient raising work.

Hereinafter, the present invention will be specifically explained based on embodiments shown in the drawings.

FIG. 2 is a perspective view of a perforated metal form plate showing one embodiment of the present invention. In the figure, 7 is an expanded metal plate made of steel, and has the required size, for example, 1m x
It is manufactured in a rectangular shape of about 30 to 33 cm or 1 m x 60 to 66 cm. Reference numeral 8 denotes hollow reinforcing edge members attached to both side edges of the expanded metal plate 7, which are constructed by cutting a pipe to a predetermined length, and are fixed by spot welding or the like.
A connecting rod 9 whose tip protrudes a predetermined length from the end surface of the reinforcing edging material 8 is fixed in the hollow end portion of the hollow reinforcing edging material 8 by spot welding or the like.

FIG. 3 is a partially cutaway front view showing the connection procedure when raising the porous metal formwork plate according to the above-described embodiment, and shows reinforcing edging materials attached to both side edges of the upper expanded metal plate 7. This is a connection example in which a protrusion of a connecting rod 9 that protrudes upward by a predetermined length from the upper end surface of the reinforcing edge member 8 of the lower expanded metal plate 7 is fitted into the hollow portion of the lower end of the lower expanded metal plate 8.

Next, FIG. 4 shows a connection procedure when raising the height using a porous metal form plate according to another embodiment of the present invention. A hollow reinforcing rim member 8 is attached to one side edge of the frame, and a connecting rod 9 is attached to the other side edge in parallel with the reinforcing edge member 8. This porous metal form plate is installed so as to protrude by a predetermined length, and the reinforcing edge material 8 and the connecting rod 9 are arranged as shown in the figure so that the positions of the reinforcing edge material 8 and the connecting rod 9 are reversed in the upper and lower stages. The upper perforated metal form plate is pushed in the direction of the arrow, and the protruding parts of the connecting rods 9 are fitted into the hollow ends of the corresponding reinforcing edging materials to connect them to each other and to gradually raise the height. be.

Furthermore, FIG. 5 shows a connecting procedure for sequentially connecting the porous metal formwork plates in the horizontal direction using still another embodiment of the present invention. Reinforcing edging 8 with connecting rod 9 shown
are attached to the upper and lower edges of the expanded metal plate 7, respectively, and the porous metal formwork plates are pushed in the direction of the arrows so that they can be successively connected laterally. It may also be possible to sequentially connect in the lateral direction using the connection procedure shown.

In each of the above-mentioned embodiments, the perforated metal form plates are connected only in the vertical or horizontal direction. However, if the reinforcing edge members 8 and connecting rods 9 that connect in the vertical direction are attached to both side edges of the front surface of the expanded metal plate 7, and the reinforcing edge members 8 and connecting rods 9 that connect in the horizontal direction are attached to the upper and lower edges of the back surface of the expanded metal plate 7, the perforated metal form plates can be connected in the horizontal direction and raised in sequence at the same time, which is extremely convenient.

Further, the hollow reinforcing rim material 8 used in each of the above embodiments is constructed by cutting a pipe to a predetermined length, but its cross-sectional shape is limited to the cross-sectional shape shown in the drawings. Instead, for example, a hollow plate having a predetermined width may be cut to serve as the reinforcing edge material. In this case, the cross section of the connecting rod should be a plate-like one that can fit into the hollow end of the reinforcing edge material, and the tip of the connecting rod should have a shoulder shape to ensure smooth fitting. Just cut the part diagonally. Furthermore, when attaching only the hollow reinforcing edging material 8 to the expanded metal plate 7 and fitting the connecting rod 9 into the hollow end of the reinforcing edging material 8 on-site, the positioning of the connecting rod must be determined. In order to do this, if a collar-shaped positioning stopper is provided in the center of the connecting rod 9, the connection can be made smoothly.

As specifically explained above, the present invention involves attaching a hollow reinforcing edging material to the edge of a rectangular expanded metal plate formed to a required size. Since the perforated metal formwork plates are configured so that they can be connected to each other by fitting a connecting rod inside them, if a hollow reinforcing rim is attached to the side edge of the expanded metal plate, the connecting rod can be inserted into the formwork plate. Therefore, the interconnected porous metal formwork plates can be sequentially raised while being connected to each other, and the interconnected porous metal formwork plates can be pushed into the hollow end portion of the reinforcing edge material and fitted. Since it is stably held by the connecting rod, there is no need to connect it by tying it with wire or the like as in the conventional method, which has the advantage of making the raising work extremely simple and greatly improving construction efficiency.

In addition, if hollow reinforcing edging materials are attached to the upper and lower edges of the expanded metal plates, the perforated metal formwork plates can be successively connected laterally via connecting rods, which is very convenient. It is.

The reinforcing edge material can be constructed by simply cutting a pipe or hollow plate material to a predetermined length, and it is sufficient to attach it to the edge of the expanded metal plate by spot welding, etc., and the connecting rod is also made of bar material. It has many advantages, such as being easy to manufacture and suitable for mass production, as it can be constructed by simply cutting or board materials, etc., and is extremely convenient and inexpensive in practice as back formwork used in retaining wall construction and lining. A metal formwork plate can be provided.

[Brief explanation of the drawing]

Figure 1 is a side sectional view showing a conventional masonry retaining wall, Figure 2
The figure is a perspective view of a porous metal formwork plate showing one embodiment of the present invention, and Fig. 3 is a partially cutaway front view showing the connection procedure when raising the height using the porous metal formwork plate shown in Fig. 2. FIG. 4 is a partially cutaway front view showing the connection procedure when raising the height using a porous metal form plate according to another embodiment of the present invention, and FIG. 5 is a porous metal mold according to still another embodiment of the present invention. FIG. 3 is a partially cutaway front view illustrating a method of connecting sequentially in the lateral direction using a frame plate. 1... Cut surface, 2... Chestnut stone, 3... Wire mesh, 4...
...Cracked stone, 5... Concrete with body, 6... Foundation concrete, 7... Expanded metal plate, 8...
...Reinforcing edge material, 9...Connecting rod.

Claims (1)

[Scope of utility model registration request] A hollow reinforcing edging material is attached to the edge of a rectangular expanded metal plate formed to the required size, and a connecting rod is fitted into the hollow end of the reinforcing edging material to connect them to each other. A porous metal form board characterized by being made to be able to