JPH081075B2 - Underground water tank and building block - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an underground water tank for temporarily storing a large amount of rainwater in a city area where a paved road is maintained and a block for building the same.

[0002]

2. Description of the Related Art In recent years, the pavement ratio has increased in urban areas, and when it rains, this rainwater cannot penetrate into the basement, travels down the paved road, is collected into the sewer, and then flows into the river. Be done. However, if a large amount of rain falls, this rainwater will exceed the permissible flow rate of the sewer and will overflow onto the paved road. Therefore, when a large amount of rain falls, this rainwater is temporarily collected in an underground water tank, and the rainwater is gradually made to flow from this underground water tank to the sewer.

An example of such an underground water storage tank is shown in FIG. 7 (see Japanese Utility Model Publication No. 2-34306). In FIG. 7, a crate stone foundation 102 and a concrete foundation 103 are formed on a foundation 101, and a large number of box culverts 104 are installed and fixed on the concrete foundation 103 while connecting in the front-rear direction. In this way, the rows of the box culverts 104 connected in the front-rear direction are arranged in parallel in a plurality of rows at intervals.

Next, the box culvert 1 of each row
The bottom plate 105 is formed between the bottom portions of 04, that is, between the extending portions of the bottom wall portion by burying the reinforcing bars and by in-situ concrete pouring. In addition, between the upper parts of the box culverts 104 in each row, that is, on the opposing pedestal, a lid body 106 in which reinforcing bars are embedded in advance and is integrally formed of concrete.
Place and fix in sequence.

Further, the applicant applied for an underground water storage tank as shown in FIG. 8 on November 30, 1990 (actual application 2-12).
9530 "Underground water tank"). This is 4 as shown
It was to build a rectangular underground water tank with the required area using the types of box culverts a, b, c, d.

[0006]

However, in such a conventional underground water tank, the concrete foundation 1
A plurality of rows of box culverts 104 arranged on the 03 in parallel with each other at a distance from each other is not sufficient, and subsequently, a reinforcing bar is embedded between the extending portions of the bottom wall portion and the bottom plate 105 is formed by in-situ concrete driving. Must be formed or the reinforcing plate is buried on the pedestal and the cover plate 106 integrally formed of concrete must be placed and fixed in order, and then the concrete must be cured, so that the construction period of this underground water tank is long. In addition, there was a problem that it took time to create it.

Further, since the box culvert 104 for constructing the conventional underground water storage tank has a box shape, it is complicated to form concrete, so that the material and labor are required and the cost is increased. There is inconvenience.

Further, since the above-mentioned underground water tank provided by the applicant is constructed by engaging and combining four types of box culverts with each other, it goes without saying that four types of box culverts can be manufactured and it takes time to construct them. There is an inconvenience that the construction period and cost increase.

[0009] Therefore, an object of the present invention is to provide an underground water storage tank and a construction block thereof, which can be constructed easily, the construction period can be greatly shortened, and which is cheaper than conventional ones.

[0010]

In order to achieve such an object, an underground water storage tank according to the present invention has a rectangular upper plate and
Connect the lower panels at right angles to each other with a central pillar, and connect the right and left sides of the central pillar with waterways.
A plurality of H-shaped blocks forming a
Within the compartment where the tank is to be constructed
And lay them in a square shape, and on each of the left and right sides of the laid-out rectangular block group, arranging a plurality of blocks each having a U-shaped cross-section with the water channel facing the water channel ,
Arrange a plurality of underdrain blocks on the front side of the block group and a plurality of wall plates on the rear side to surround the block group.
It is characterized by being closed .

[0011]

[0012]

[0013]

[Operation] Blocks of H-shaped cross section are laid vertically and horizontally on a concrete foundation for which an underground water tank should be constructed to construct a rectangular block group, and then a plurality of cross sections are formed in the peripheral portion or both left and right sides of the block group. The U-shaped blocks are placed close to each other so that the waterways face each other.

If blocks having a U-shaped cross section are not arranged before and after the block group and the water channel is open, the opening is closed by a wall plate. In this way, the construction work of the underground water storage tank is completed simply by arranging the plurality of blocks vertically and horizontally or by closing the opening of the water channel with the wall plate.

[0015]

Embodiments of the present invention will be described below with reference to the drawings.
1 and 2 show a block 1 having an H-shaped cross section, and FIGS. 3 and 4 show a block 2 having a U-shaped cross section. These blocks 1 and 2 are integrally molded by putting ready-mixed concrete in a mold.

A block 1 having an H-shaped cross section shown in FIGS. 1 and 2 has a square upper plate 3 and a square lower plate 4 integrally formed by a central pillar 5, and is formed on both left and right sides and front and rear sides (see FIG. 1A). (The depth direction of the) is open, and water channels 6 and 7 having a U-shaped cross section are formed in the front-rear direction. Further, the central pillar 5 is arranged in the central portion of the upper board 3 and the lower board 4, and two window holes 8 and 8 formed of a rectangular space portion in the height direction are formed. The holes 8 are composed of three columns 5a, 5b and 5c formed at both ends and in the middle.

The block 1 has a plurality of small-diameter through holes 9 formed in the upper plate 3, the lower plate 4, and the central column 5 at predetermined vertical and horizontal intervals. The small-diameter insertion hole 9 is formed so that when the blocks 1 and 2 are aligned and laid out, a piano wire is inserted and pulled to bring the adjacent blocks 1 and 2 into close contact with each other.

The block 2 having a U-shaped cross section shown in FIGS. 3 and 4 is a rectangular upper plate 3 which is about half the upper plate 3 and the lower plate 4.
a and the lower plate 4a are integrally formed on one side wall 10, one of the left and right sides and the front and rear side (the depth direction of FIG. 1A) are open, and a water channel 11 is formed in the front and rear direction. One side wall 1
No communication holes are provided in 0, and three reinforcing pillars 12
, And a recess 13 is formed between the reinforcing pillars 12.

The block 2 has an upper board 3a and a lower board 4a.
A plurality of metal wire insertion holes 9a are formed on the one side wall 10 at predetermined longitudinal and lateral intervals. This metal wire insertion hole 9a is provided when the blocks 1 and 2 are lined up in line.
It is provided in order to insert the piano wire and pull it to bring the adjacent blocks 1 into close contact with each other and to connect the blocks 1 and 2 to each other.

An example of constructing an underground water storage tank using these blocks 1 and 2 will be described below. As shown in FIG. 14 are formed, and a plurality of blocks 1 are aligned vertically and horizontally on the concrete foundation 14 to form a rectangular block group 15, and a plurality of blocks 2 are arranged on both left and right sides of the block group 15. Deploy.

That is, the lower board 4 of the block 1 is placed on the concrete foundation 14, and the water channels 6 and 7 of the adjacent blocks 1 and 1 are aligned with each other. Further, the lower board 4a of the block 2 is placed on the concrete foundation 14, and the blocks 2 are closely arranged to the blocks 1 so that the water channels 11 face the water channels 6 and 7 of the block 1. Therefore, as shown in FIG. 6, the left and right sides of the block group 15 are closed by the blocks 2. Then, a piano wire is inserted into a metal wire insertion hole 9a that is in communication with the side surfaces of the blocks 1 and 2 that are in contact with each other and face each other, and the blocks 1 and 2 are aligned and brought into close contact.

Therefore, in order to close the combined water channels 6 and 7 that open at the rear end of the block group 15 in the front-rear direction (the direction of arrow A), a wall plate 16 such as a pcast concrete plate is used.
The combined water channel 6, which is closed by and is opened at the front end.
A plurality of underdrain blocks 1 having openings 18 facing 7
Block at 7. The underdrain block 17 is a known one, and its both ends are closed by wall plates 19 and box-shaped blocks 20. 21 is a collecting basin, 22 is a collecting basin 21 and an underdrain block
It is a pipe for connecting with 7.

Therefore, as shown in FIG. 6, the left and right sides of a block group 15 formed by a plurality of blocks 1 aligned and closely contacted with each other are closed by the blocks 2 and merged into the water channels 6, 6.
7 and 11 communicate with each other in a straight line in the front-rear direction of the block group 15 (direction of arrow B). Further, the windows 8, 8 are arranged to face each other in a straight line in the left-right direction of the block group 15 (direction of arrow A). The front and rear of the block group 15 are the wall plates 1
6 and the underdrain block 17 are closed.

Thus, the underground water tank can be constructed simply by laying the blocks 1 and 2 on the concrete foundation 14 which has been constructed in advance. The upper surface of the constructed underground water tank can be covered with soil and used for parks and other purposes.

[0025]

As described above, according to the present invention, 2
The construction work of the underground water tank has already been completed at the stage where the types of blocks are placed on the concrete foundation. Therefore,
Unlike the conventional method, it is not necessary to perform concrete pouring or concrete curing subsequently, and the construction period of the underground water storage tank can be shortened and the construction work can be performed easily. Moreover, since two types of blocks are sufficient, it is easy to manufacture and can be provided at a low cost, and an underground water tank can be constructed at a low cost.

[Brief description of drawings]

FIG. 1 is a perspective view showing a block for constructing an underground water tank (A).
And a front view (B).

2 is a sectional view ( A ), a sectional view (C) and a sectional view ( B ) of FIG.

FIG. 3 is a perspective view showing a block for constructing an underground water tank (A).
And a front view (B).

4 is a sectional view taken along the line AA of FIG. 3 and a sectional view taken along the line C-C.
(B) and BB sectional drawing (C) .

FIG. 5 is an explanatory perspective view of an example of an underground water tank construction.

FIG. 6 is a partial cross-sectional plan view of an example of an underground water tank construction.

FIG. 7 is an explanatory view of a conventional example.

FIG. 8 is an explanatory diagram of a conventional example.

[Explanation of symbols]

 1, 2 ... Block for constructing underground water storage tank 3, 3a ... Upper plate 4, 4a ... Lower plate 5 ... Central pillar 6, 7, 11 ... Water channel 8 ... Window hole 9 ... Metal wire insertion hole 10 ... One side wall

Claims (1)

[Claims] 1. A rectangular upper plate and a lower plate are connected at right angles to each other with a central pillar.
A H-shaped cross section that is connected to form a water channel on both the left and right sides of the central pillar.
Place multiple locks vertically within the area where the underground water tank should be constructed.
The blocks are laid side by side in a square shape with the channels closely aligned with each other, and a plurality of blocks with U-shaped cross sections are placed on the left and right sides of the square block group .
An underground water tank characterized by arranging the blocks facing each other and arranging a plurality of underdrain blocks on the front side of the block group and arranging a plurality of wall plates on the rear side to close the periphery of the block group. .