JPH0538098Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention mainly relates to a simple formwork device for constructing concrete blocks for avalanche prevention on slopes.

[Conventional technology]

One method of preventing avalanches has traditionally been to install a large number of concrete blocks at intervals on a slope. Alternatively, it depends on whether formwork is constructed and concrete is poured on site.

[The problem that the idea aims to solve]

In the method of transporting blocks of secondary products to the site for installation, not only is it not easy to transport the blocks, but the construction of the blocks requires heavy machinery, making the construction large-scale. In addition, heavy machinery cannot be installed in areas adjacent to people's homes, and construction on steep slopes is difficult. Furthermore, in a site with sloping footing and poor footing, transporting and handling various materials and especially heavy blocks is not only dangerous, but also requires complicated labor and construction costs.

The present invention was developed to solve the problems in the conventional technology as described above, and by using a unit type (foldable) formwork that is lightweight and disposable, it can be used on slopes with poor footing. Concrete block facility work can be done easily, safely and efficiently, and construction costs can be reduced. The present invention aims to provide a formwork device for constructing concrete blocks on slopes.

[Means to solve the problem]

Next, the configuration of the formwork device of the present invention will be explained with reference to FIGS. 1 to 7 corresponding to the embodiments. A trapezoidal cylindrical form body 1 is formed by bending the parts B and B and the back plate part C, and this form body 1
A suitable number of through holes 2, 2 are provided at opposing positions in the opposing side plates (B, B), respectively, and on the other hand, at both ends of the rod, there are anchoring bodies 5, 5 having insertion holes 4 and their inner parts. A separator 3 is formed by providing stoppers 6, 6 located at The separator 3 and the side plate parts A and B are connected by the wedge rods 7 inserted into the insertion holes 4 and 4, and the anchor rods 9 arranged in the form body 1 are
This is characterized in that the separators 3 and 3 are connected to each other by a presser bar 10.

〔Example〕

Hereinafter, embodiments of the formwork apparatus of the present invention will be described with reference to the drawings.

In Figures 1 to 7, 1 is a formwork body made of lightweight and disposable board material such as cardboard or other paper board or plastic board. The following ladder-shaped side plates B and B and the rectangular back plate C and C that follow the oblique sides of these side plates B and B are folded into a whole that can be bent freely through folds a and a. It is formed into a continuous band-like plate that can be Then, this is bent from each fold a, a, and the two back plate parts C, C are overlapped and glued as appropriate to form a trapezoidal rectangular cylindrical frame as shown in Figures 1 to 3. A plurality of through holes 2, 2 are provided in two rows at mutually opposing positions in the side plate portions (b) and (b), spaced apart from each other in the vertical direction.

Reference numeral 3 denotes a separator, which has vertical insertion holes 4 at both ends of the rod, and has anchoring bodies 5, 5 that can be inserted into the through holes 2 of the form body 1, and a separator located inside the separator, which has an insertion hole 4 in the vertical direction. It has a structure in which stoppers 6, 6 that engage with the inner surface of 1 are provided. This separator 3
Insert the anchoring bodies 5, 5 at both ends into the through holes 2, 2 provided in the opposing side plates B, B of the form body 1, and then insert the stoppers 6, 6 into the inner surfaces of the side plates B, B. to be engaged with. When the form body 1 is formed of a cardboard board, the linear wedge rods 7 are passed through the cardboard board and inserted into the insertion holes 4, 4 of the respective anchoring bodies 5, 5 to form the form body 1. The both side plate portions B and B and the separators 3 and 3 are joined together. In addition,
When the form body 1 is made of a plastic plate or the like, as shown in FIG. The insertion hole 4 has a protruding shape.
The wedge rod 7 may be inserted into the hole.

Further, longitudinal reinforcing bars 8, 8 are provided in the formwork body 1 in a manner that engages or binds each separator 3, 3, and some of them are attached to a concrete platen or a concrete frame. Or it penetrates into the ground and becomes fixed. Further, an anchor bar 9 fixed to the ground is provided in the center of the form body 1, and a presser bar 10 installed between the opposing separators 3 is connected to the upper part of the anchor bar 9. wear it. By that,
It is possible to prevent the form body 1 from lifting up due to lateral pressure during concrete pouring. In the figure, reference numeral 11 denotes a nut screwed onto the anchor bar 9 for securing the presser bar 10.

After the concrete 12 poured into the form body 1 has hardened, the wedge rod 7 is pulled out, the form body 1 and the separators 3 are released from each other, and the form body 1 is separated from the concrete 12. , if it is made of paper, discard it. Also, if it is made of plastic, it can be used again. Concrete blocks A as shown in Figure 8 will be constructed on the slope.

As shown in FIG. 9, the concrete blocks A mentioned above are arranged at required intervals in the vertical and horizontal directions of the slope. In addition, as shown in Fig. 10, a wire rope is connected between the tops of each concrete block A and A.
3 and 13 are stretched, and the terminal portions of the wire ropes 13 and 13 are fixed to anchors buried in the ground. Thereby, each concrete block A,
It is possible to strengthen the cooperation between concrete blocks A and prevent snow from falling through the concrete blocks A and A.

Various methods can be considered for fixing the wire rope 13 at the top of the concrete block A, but for example, as shown in FIG.
is buried, a fixing fitting 14 is attached to it, and wire ropes 13, 13 crossed over the top of the concrete block A are fixed.

Moreover, the concrete block A is the first concrete block A.
As shown in FIG. 2, it can also be provided on each intersection of the legal frame structure B. In this case, as shown by diagonal lines in Fig. 12, each concrete block A, A
Wire ropes 13, 13 can be stretched between the tops of the wire ropes 13, 13, and the terminal portions of the wire ropes 13, 13 can be fixed to anchors buried in the ground.

[Effect of idea]

As explained above, the formwork device of the present invention uses a lightweight band-shaped plate material such as a paper board, and bends it into a front plate part, a side plate part, and a back plate part to form a trapezoidal rectangular cylindrical formwork body. An appropriate number of through holes are provided at opposing positions in the opposing side plates of the form body, and on the other hand, an anchor body having an insertion hole and a stopper located inside the rod body are provided at both ends of the rod body. The separator is placed in the formwork body, the anchoring body is inserted into the through hole of the side plate part, and the separator and the side plate part are connected by the wedge rod penetrated into the insertion hole. However, since the separator is connected to the anchor bars disposed inside the form body by the presser bars, there are many advantages as follows.

(1) The formwork is made by bending and folding a lightweight band-shaped board and transporting it and forming it into a rectangular cylinder on site, making it extremely easy to transport and handle on slopes with poor footing. In addition, even a lightweight material with low strength can sufficiently resist the lateral pressure of poured concrete.

(2) Insert the anchoring bodies provided at both ends of the separator into the through-holes of the formwork body, engage the stoppers with the formwork body, and insert the wedge rods to connect the formwork body and separator. Therefore, shaping of the formwork body can be done reliably and easily.

(3) Since the separator is attached to the anchor reinforcement, it is possible to prevent the formwork from lifting up during concrete pouring.

(4) The formwork can be easily removed by simply pulling out the wedge rods, and the formwork is lightweight and inexpensive, making it disposable and convenient for disposal after the formwork is removed. It is.

(5) Overall, construction and transportation are easy, and construction costs can be significantly reduced.

[Brief explanation of the drawing]

The drawing shows one embodiment of the device of the present invention.
Figure 1 is a plan view, Figure 2 is a partially cutaway side view, and Figure 3 is a partially cutaway side view.
The figure is a half front view, Figure 4 is a developed view of the form body, Figure 5 is an explanatory diagram of the connection of the ends of the separator, Figure 6 is a diagram of another embodiment, and Figure 7 shows the main part of the presser bar. Slope diagram showing,
Fig. 8 is a vertical cross-sectional view of a concrete block constructed by the device of the present invention, Fig. 9 is a slope view showing an example of an avalanche prevention facility using concrete blocks,
Figure 10 is a slope view showing an example where a wire rope is installed, Figure 11 is an enlarged slope view of the same essential part, and Figure 12 is a slope view showing an example where concrete blocks are installed on a legal frame structure. . 1... Formwork body, A... Front plate part, B... Side plate part, C... Rear plate part, 2... Through hole, 3... Separator, 4... Insertion hole, 5... Attachment body , 6...stopper, 7...wedge rod, 8...reinforcement bar, 9...
Anchor reinforcement, 10... Presser reinforcement, 12... Concrete, 13... Wire rope.

Claims (1)

[Scope of utility model registration request] A lightweight belt-shaped plate material such as paper board is bent into a front plate part, a side plate part, and a back plate part to form a trapezoidal rectangular cylindrical form body, and the opposing side plate parts of this form body are A separator is formed by providing an appropriate number of through holes at opposing positions, and at both ends of the rod, a locking body having a through hole and a stopper located inside the rod. The separator is placed inside the body, the anchoring body is inserted into the through hole of the side plate part, the separator and the side plate part are connected by the wedge rod penetrated into the insertion hole, and the separator and the anchor bars arranged in the form body are connected. A unit type formwork device for concrete blocks installed on a slope, characterized in that the concrete blocks are attached by presser bars.