JPH0523666Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an improvement of a prefabricated prismatic channel cover structure.

(Prior art and its problems) Conventionally, in order to effectively utilize the upper space of the waterway 2, etc., a large number of cylindrical waterway cover structures b are arranged over the opening of the waterway 2, as shown in FIGS. 9 to 11. Then, the reinforcement 10 is laid, and finally the ready-mixed concrete 1 is laid.
1 was poured to complete the canal cover B, but in this case, it was necessary to install shoring during the construction and concrete curing period, which not only took time but also lengthened the construction period. Ta.

There is also a method of constructing the lid using a PC board, but in this case, heavy equipment such as trucks and cranes is required at the construction site to lay the PC board, and work is carried out manually at locations where it is impossible to bring in these heavy machines. There was a problem in that the construction progress was delayed because there was no other option but to rely on them.

(Purpose of the present invention) The present invention has been made in view of the conventional example,
The purpose is to provide a prismatic waterway cover structure that allows easy construction of the waterway cover even in locations where heavy machinery cannot be brought in.

(Means for Solving the Problems) In order to achieve the above object, the present invention protrudes from both ends of the prismatic waterway cover body 1 with cylindrical support portions 4 placed on the opening edge 3 of the waterway 2.

; adopts technical means.

(Function) The cylindrical support portion 4 of the prismatic channel cover structure a that has been transferred is placed on the opening edge 3 of the waterway 2 to be constructed, and then rolled on the opening edge 3 to a predetermined location. Monkey.

It is arranged so that one surface of the prismatic channel cover main body 1 becomes horizontal at that position.

The next prismatic waterway lid structure a that has been rolled in the same manner is placed along with the first prismatic waterway lid structure a, moving it slightly horizontally if necessary.

The above operations are repeated to densely lay a large number of prismatic waterway cover structures a on the waterway 2.

Since the installed prismatic waterway cover structure a is in contact with the side surface of the adjacent prismatic waterway cover structure a, it is restrained and does not rotate, thereby forming the waterway cover A that covers the opening of the waterway 2. .

(Example) Hereinafter, the present invention will be described in detail according to the illustrated example.
As can be seen from FIG. 1, the prismatic waterway lid structure a of the present invention has hollow cylindrical support portions 4 protruding from both ends of a hollow prismatic waterway lid body 1. A reinforcing bar cage 5 is inserted inside over almost the entire length to provide tensile strength. The length of the prismatic waterway cover body 1 almost matches the opening width of the waterway 2. In the illustrated embodiment, the cross section of the prismatic channel cover main body 1 is approximately square, and the length of one side thereof and the diameter of the cylindrical support portion 4 are approximately equal. Of course, the cross section of the prismatic waterway lid main body 1 is not limited to a square, but may be such that when the prismatic waterway lid structures a are arranged in contact with each other, the side surfaces of the prismatic waterway lid main bodies 1 do not touch each other and create unevenness on the upper surface. Things are naturally included. In addition, the surface shape may be smooth, but depending on the surrounding environment, fine irregularities may be formed on the surface to resemble the skin of a tree to create a pseudo-wood-like shape, or paint may be mixed in to create a colored or geometric pattern. may be applied. Moreover, the cylindrical support part 4
A hanging hook 6 is provided protruding from the end face of.

Figures 4 and 5 are an external perspective view and a cross-sectional view of a mold 7 for centrifugal molding to form a prismatic waterway cover structure a, in which a cylindrical woven reinforcing bar basket 5 is arranged inside the mold 7. After the concrete 11 is poured into the formwork 7, the formwork 7 is rotated by the support rollers 8.
Then, the concrete 11 inside sticks to the inner surface of the formwork 7, which has a rectangular cross section, due to the centrifugal force of the formwork 7, and when it is taken out after hardening, it becomes a hollow space with a reinforcing bar cage 5 inserted inside, as shown in Figures 2 and 3. A prismatic channel cover structure a is completed. In this way, since the prismatic channel cover structure a is hollow, it is possible to reduce the weight.

Next, the construction method will be explained. First, in the waterway 2 to be constructed, a large number of prismatic waterway cover structures a are transported to a position where heavy machinery can be brought in, suspended one by one and transferred to the top of the waterway 2, and then placed over the opening edge 3 of the waterway 2. Place the cylindrical support part 4 of the prismatic waterway lid structure a that has been transferred to the holder, then roll it on the opening edge 3 to a predetermined position, and at that position, one side of the prismatic waterway lid body 1 is placed. Place it so that it is horizontal. The next prismatic waterway lid structure a that has been rolled in the same manner is placed along with the first prismatic waterway lid structure a, moving it slightly horizontally if necessary. The above operations are repeated to densely lay a large number of prismatic waterway cover structures a on the waterway 2. The installed prismatic waterway cover structure a is in contact with the side surface of the adjacent prismatic waterway cover structure a, so it is restrained and does not rotate, thereby forming the waterway cover A that covers the opening of the waterway 2. .

In addition, if it becomes necessary to remove the waterway cover A that has been laid down for waterway inspection, hang a rope on the hanging hooks 6 and move them slightly horizontally one by one, and then perform the reverse operation to the above. Move it to a remote location and open the installation location of the water channel cover A.

The prismatic waterway lid structure a of the present invention has cylindrical support portions 4 protruding from both ends of the prismatic waterway lid body 1 to be placed on the opening edge 3 of the waterway 2. When the cylindrical support part 4 is placed on the cylindrical waterway 3 and rolled, the end surface of the prismatic waterway cover structure 1 comes into contact with the opening edge 3 of the waterway 2 and becomes a guide. Unlike the lid structure 9, it is less likely to fall off the wheel and fall into the waterway 2.

(Effects) As described above, the present invention has columnar supports that are placed on the opening edge of the waterway protruding from both ends of the prismatic waterway cover body. The advantage is that the support part can be placed and rolled, and the canal cover can be easily constructed even in places where heavy machinery such as cranes cannot enter. This can be applied to the case where the completed prismatic channel cover structure is taken out from the formwork or transferred to another location if a guide rail is installed. Second, the large number of prismatic canal cover structures laid side by side are all flush, and no special surface paving work is required just by arranging them on the waterway, significantly reducing construction costs and shortening the construction period. Not only can this be realized, but it also has the advantage of being able to easily move the prismatic waterway cover structure to another location when it becomes necessary to inspect the waterway, in terms of maintenance and inspection. Thirdly, since the main body part is prismatic, there is no risk of it rolling over even when stacked, and there is an advantage that stable storage management is possible.

[Brief explanation of drawings]

Fig. 1...An external perspective view of an embodiment of the present invention, Fig. 2...A positive half cross-sectional view of an embodiment of the present invention...Fig. 3...
...Side view of Fig. 2 Fig. 4... External perspective view of the centrifugal formwork for manufacturing the prismatic waterway lid structure according to the present invention Fig. 5... Cross-sectional view of the formwork of Fig. 4 Fig. 6 figure…
...Perspective view showing the installation state of the prismatic waterway lid structure according to the present invention.FIG. 7. A half sectional view of the conventional cylindrical waterway lid.FIG. 8.Side view of FIG. 7.FIG. 9. 1
Figure 1: A perspective view showing the construction procedure of a conventional example. A... Channel cover according to the present invention, B... Conventional channel cover, 1... Prismatic channel cover body, 2... Channel,
3...Opening edge, 4...Cylindrical support part, 5...Reinforced cage, 6...Hanging hook, 7...Formwork, 8...Support roller, 9...Cylindrical waterway cover structure, 10... ...Reinforcement arrangement, 11...Ready-mixed concrete.

Claims (1)

[Scope of utility model registration request] 1. A prismatic waterway lid structure comprising cylindrical support parts protruding from both ends of a prismatic waterway lid body to be placed on the opening edge of a waterway.