JP7126483B2 - Structure of channel block - Google Patents

Description

TECHNICAL FIELD The present invention relates to a structure of blocks embedded in a row in the ground under a road to constitute a waterway.

BACKGROUND ART In recent years, with the widening of roads such as national highways, the construction of underdrains on sideways of roads has been promoted. For example, box culverts are buried in rows under roads to construct underground culvert-type waterways .

FIG. 1 shows an example of the box culvert. FIG. 1 (a) shows a box culvert 3 forming three rows of water channels, and FIG. 1 (b) shows a box culvert 4 forming four rows of water channels.

The box culvert 3 includes, in the width direction, a box culvert 3a of a double channel and a box culvert 3b of a single channel. The outer surfaces of the side walls 3c of the both 3a and 3b are joined to each other, and a water passage hole 3e is formed through the joined side walls 3c and the intermediate wall 3d.

The box culvert 4 includes four single-row water channel box culverts 4 a in the width direction of the water channel 2 . In each box culvert 4a, outer surfaces of side walls 4b are joined together, and water passage holes 4c are formed through the joined side walls 4b. It should be noted that the present invention was invented based on a publicly known and publicly used technique, and there is no prior art document that the applicant is aware of.

The aforementioned water passage holes 3e and 4c are formed to keep the water level and water pressure between the water channels 6 in the box culverts 3 and 4 uniform. Conventionally, however, the walls 3c, 3d, and 4b are formed with the water passage holes 3e and 4c through them, which may affect the overall strength and cause problems in durability.

The present invention has been made to solve such conventional problems, and is to form water passages between water passages in culvert-type blocks buried under roads without affecting the strength of the blocks. is the problem to be solved.

(1) The present invention relates to a structure of underdrain-type blocks embedded in rows to form a waterway,
An intermediate wall that divides the inside of the block into a plurality of water channels,
each of the intermediate walls has a recess formed in at least one of the surfaces facing the intermediate wall of the other blocks adjacent in the row;
It is characterized in that a water passage between the water passages is formed between the facing surfaces when the rows are joined.

(2) One aspect of the block includes a pair of upper and lower walls and a lower wall;
a pair of side walls connecting side ends of the upper wall and the lower wall;
with
The intermediate wall connects the upper wall and the lower wall between the side walls.

(3) Another aspect of the block is configured by joining a plurality of block bodies in the width direction,
The block body includes a pair of upper and lower walls and a lower wall;
a pair of left and right side walls connecting side ends of the upper wall and the lower wall;
with
The intermediate wall is configured by joining the side walls together in the width direction.

(4) Another aspect of the block is configured by joining two types of block bodies in the width direction,
One type of block body includes a pair of upper and lower walls and a lower wall;
a pair of left and right side walls connecting side ends of the upper wall and the lower wall;
with
The other type of block body further comprises a first intermediate wall connecting the upper wall and the lower wall between the side walls,
The second intermediate wall is formed by joining the side walls of the block bodies of the two types,
The concave portion is formed in the facing surfaces of the intermediate walls.

(5) It is preferable that each block is provided with a sealing member for sealing the periphery of the water passage when joining the rows.

ADVANTAGE OF THE INVENTION According to this invention, the water passage between each water channel in the culvert type block buried under the road can be formed, without affecting the strength of a block.

(a) is a configuration diagram showing an example of a box culvert used for underdrainage , and (b) is a configuration diagram showing another example of the same box culvert. (a) is a front view of the box culvert according to the embodiment, and (b) is a rear view of the box culvert. AA sectional view of FIG. 2 (a). (a) is a BB cross-sectional view of FIG. 2 (a), and (b) is a vertical cross-sectional view showing a water passage hole.

Hereinafter, the structure of the channel block according to the embodiment of the present invention will be described. Here, an example of application to a culvert-type box culvert will be described as an example. This box culvert is used for underdraining a side channel on the side of a road , that is, for constructing an underdrain -type channel .

≪Example≫
(1) An embodiment will be described with reference to FIGS. 2 to 4. FIG . 11 in FIG. 2 indicates the box culvert.

As shown in FIGS. 2(a) and 2 (b), the box culvert 11 is formed in the shape of a box made of concrete. A pair of left and right side walls 14 connecting the side ends of 13 and two intermediate walls 15 connecting both walls 12 and 13 between the side walls 14 . The interior of the box culvert 11 is partitioned into three channels 23 by the intermediate walls 15, and the group of channels 23 constitutes the underground channel 2. As shown in FIG.

Here, as shown in FIG. 2 (a), packings 21 are fixed to the front surfaces of the walls 12 to 14, and guide fittings (joint bars) 17 are provided at the corner portions 16. As shown in FIG. A lower end portion of the guide fitting 17 is embedded in the corner portion 16 while an upper end portion thereof is exposed from the corner portion 16 . On the other hand, as shown in FIG. 2 (b), a guide metal fitting (joint socket) 18 into which the upper end of the guide metal fitting 17 is inserted is embedded in the rear surface of the corner portion 16. As shown in FIG.

Each intermediate wall 15 , as shown in FIG. 15a and a body 15b between the legs 15a. Further, as shown in FIG. 4 (a), concave portions 19 having a U-shaped vertical cross section are formed in the front and rear end faces (end face on the F side and end face on the B side) of each intermediate wall 15. As shown in FIG. The concave portion 19 has groove bottoms on the front and rear end surfaces of the main body 15b and the legs 15a, and has groove walls 19a that slope upward from the walls 12 and 13 of the legs 15a.

(2) According to the box culvert 11 configured as described above, when constructing the waterway 2 underground on the side of the road, the box culverts 11 are buried in a row under the road. Here, the box culverts 11 adjacent to each other in rows in the front and rear directions of the arrows F and B are joined together.

That is, the upper end of the guide fitting 17 of one of the adjacent box culverts 11 is inserted into the guide fitting 18 of the other box culvert 11 to join the two box culverts 11 together. After that, a highly elastic adhesive (mainly composed of epoxy resin and silicone) is injected between the packings 21 of the box culverts 11 facing each other to connect them.

Therefore, between the box culverts 11 adjacent to each other, the front and rear end surfaces of the respective intermediate walls 15 face each other as shown in FIG. 4 (b). At this time, a slit-shaped water passage 20 is formed by the concave portions 19 formed on the front and rear end surfaces of the intermediate wall 15, that is, on the opposing surfaces.

As a result, the water passage 20 can be formed only by joining the adjacent box culverts 11 before and after without forming through holes in the side walls 14 and the intermediate walls 15 . As a result, the water level and water pressure between the water channels 23 can be made uniform without affecting the strength and durability of the box culvert 11 .

Moreover, since it is only necessary to join the adjacent box culverts 11 on the front and rear sides, the water passage 20 can be formed with a simple structure. The circumference of the water conduit 20 is sealed by the packing 21 of the two box culverts 11 joined together.

≪Others and other examples≫
The present invention is not limited to the above embodiments, and can be modified and implemented within the scope described in each claim. An example is described below.

(1) The recess 19 need not be formed on both the front and rear end faces of the intermediate wall 15, and may be formed on one of them. In this case, a narrow water passage 20 is formed between the intermediate walls 15 of the box culverts 11 adjacent to each other in the front-rear direction.

In addition, the concave portion 19 does not necessarily have to have a U-shaped cross section, as long as the water passage 20 is formed when the adjacent box culverts 11 are joined together. .

(2) The present invention can also be applied to the box culverts 3 and 4 shown in FIGS. 1(a) and 1 (b). For example, the box culvert 3 shown in FIG. 1 (a) has box culverts 3a and 3b in the width direction. Here, the front and rear surfaces (opposing surfaces) of the side wall 3c and the intermediate wall 3d to which the both 3a and 3b are joined may be formed as recesses 19. As shown in FIG.

The box culvert 4 shown in FIG. 1 (b) is constructed by joining box culverts 4a in the width direction of the channel 2. As shown in FIG. Here, the recesses 19 may be formed on the front and rear surfaces of the side walls 3c to which the box culverts 4a are joined.

(3) The box culverts 3, 4, 11 can be connected in a row using , for example, PC steel wires.

2, 23 Waterway 3, 4, 11 Box culvert (block)
3a, 3b, 4a... Box culvert (block body)
3d, 15... Intermediate wall 3e, 4c, 14... Side wall 12... Upper wall 13... Lower wall 19... Recess 20... Water channel

Claims (5)

A structure of underdrain-type blocks buried in rows to form a waterway,
An intermediate wall that divides the inside of the block into a plurality of water channels,
each of the intermediate walls has a recess formed in at least one of the surfaces facing the intermediate wall of the other blocks adjacent in the row;
The water channel block structure, wherein a water channel between the water channels is formed between the facing surfaces when the rows are joined. The block includes a pair of upper and lower walls and a lower wall;
a pair of side walls connecting side ends of the upper wall and the lower wall;
with
2. The water channel block structure according to claim 1, wherein said intermediate wall connects said upper wall and said lower wall between said side walls. The block is configured by joining a plurality of block bodies in the width direction,
The block body includes a pair of upper and lower walls and a lower wall;
a pair of left and right side walls connecting side ends of the upper wall and the lower wall;
with
The water channel block structure according to claim 1, wherein the intermediate wall is formed by joining the side walls together in the width direction. The block is configured by joining two types of block bodies in the width direction,
One type of block body includes a pair of upper and lower walls and a lower wall;
a pair of left and right side walls connecting side ends of the upper wall and the lower wall;
with
The other type of block body further comprises a first intermediate wall connecting the upper wall and the lower wall between the side walls,
The second intermediate wall is formed by joining the side walls of the block bodies of the two types,
2. The water channel block structure according to claim 1, wherein said recesses are formed in said opposing surfaces of said both intermediate walls. 5. The water channel block structure according to any one of claims 1 to 4, further comprising a sealing member for sealing the circumference of the water channel when joining the rows.

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