JPH0723623B2 - Reservoir device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a basin device for temporarily storing a large amount of rainwater, and in particular, a plurality of box culverts are vertically stacked and arranged horizontally in a plurality of rows. The present invention relates to a reservoir device.

[0002]

2. Description of the Related Art As a conventional water reservoir device, a full-scale shokai 62 is used.
As disclosed in Japanese Patent Publication No. 66977, a block in which a bottom wall portion and an upper wall portion having the same shape as the bottom wall portion are integrally connected via a pillar at a corner and an opening is provided between the pillars. Is formed, and a plurality of blocks are arranged side by side in the front-rear and left-right directions so that the openings of the blocks communicate with each other.

However, in the conventional apparatus thus constructed, the bottom wall portion and the top wall portion of the vertically adjacent box culverts are doubled and the internal volume is reduced accordingly, so that the maximum water storage amount is reduced. .

Further, in the conventional device, since the box culverts vertically adjacent to each other have the flat upper wall and the flat bottom wall merely contacting each other, there is a risk of skidding during assembly. .

Further, in the conventional device, since the box culverts are simply stacked, the position shift of the box culverts is likely to occur during backfilling with earth and sand, and the whole device cannot be easily integrated firmly.

[0006]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to increase the inner volume to increase the maximum water storage amount, prevent skid during assembly, and firmly integrate the entire apparatus. It is to provide a water pond device.

[0007]

The following is a description with reference to the reference characters in the accompanying drawings. In the water reservoir device of the present invention, columns 14 are erected on the upper surfaces of the four corners of the bottom wall portion 11, and the bottom wall portion is provided. 11
Box culverts 10A, 10B, 1 without openings in
While arranging 0C, 10D, and 10E in a plurality of rows in the front, rear, left, and right at the bottom, columns 14 are erected on the upper surfaces of the four corners of the bottom wall 11, and recesses 13 are provided on the lower surfaces of the four corners of the bottom wall 11. Box culverts 10F, 10G, 10H, 10I, 1 in which a support section 14 and an edge frame section are left on the wall section 11 to provide an opening section 12
0J is arranged in a plurality of rows in the front, rear, left, and right other than the bottom row.

Posts 14 of the lower box culvert group
Each upper end of the bottom wall of the upper box culvert group 1
A plurality of box culverts are stacked in a plurality of upper and lower stages by engaging with the respective concave portions 13 of 1, and a cover plate 15 is hung between the upper portions of the uppermost box culvert groups 10F to 10J.
The inner spaces of the plurality of box culverts are made to communicate with each other by the side wall opening 16 of each box culvert 10A to 10J and the opening 12 of the bottom wall 11, and adjacent box culverts are joined by fastening PC steel materials 18. To do.

[0009]

In the water retaining device of the present invention, the internal spaces in the respective box culverts 10A to 10J communicate with each other through the side wall opening 16 and the bottom wall opening 12 to provide a large volume unit. It forms one underground water tank.

When the excavated ground on the site is constructed in a two-tiered structure, box culvert groups 10A to 10E having no openings in the bottom wall portion 11 are installed in front and rear rows. Next, the box culvert group 10F having the opening 12 in the bottom wall 11
10J to the corresponding box culverts 10A to 10E
The recesses 12 in the bottom wall are intermeshed and stacked on the upper ends of the columns 14.

Adjacent box culverts are joined and integrated by fastening the PC steel 18 at each step or between each step and the upper and lower steps, and the cover plate 15 of the uppermost box culverts 10F to 10J is placed and fixed. . Finally, the earth and sand are backfilled.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT In the illustrated embodiment, a box culvert 10
In A to 10J, reinforcing bars are embedded inside and integrally molded with cement concrete, and in addition to the four corners of the rectangular bottom wall 11, pillars 14 are erected on the front and rear long side middle portions. . Corresponding to this, the box culvert group 10F ~
As for 10J, a total of six recesses 12 are provided directly below the columns 14.

As shown in FIGS. 4 and 9, the standard wall culverts 10A and 10F of the two types have the bottom wall portion 1
The pillar 14 is only provided on the upper surface side of the above, and an opening 16 is formed between the pillars 14 and 14 with the entire surface open. The box culverts 10A and 10F have no upper wall portion, and the upper surface portion is entirely open.

On the other hand, FIGS. 3, 6, 8 and 10
As shown in FIG. 4, four types of box culverts 10B, 10C, 10G, 10H arranged at the four corners of the water tank body
Then, the outer wall portion 17 is provided on the two side surface portions intersecting each other,
The entire space between the columns 14 on the side surface is closed. Also for these box culverts, there is no upper wall, and the upper surface is entirely open.

As shown in FIGS. 5, 7, 11, and 12, four types of box culverts 10D, 10E, 10J, 10 arranged on the outer peripheral portion of the water tank body other than the four corner portions.
In I, the outer wall portion 17 is provided on one side surface portion of the long side or the short side, and the columns 14 on the side surface portion are completely closed. Also for these box culverts, there is no upper wall, and the upper surface is entirely open.

As the PC steel material 18, a twisted steel wire, a steel rod or the like is appropriately selected and used, and as a means for terminal treatment of the PC steel material 18, known means such as a receiving plate 19, a wedge body 20 and a seat plate 21 are used. Can be selected and used. If necessary, the sheath tube 23 can be buried in the receiving hole 22 through which the PC steel material 18 is inserted when the box culvert is molded. A packing material or a standard sealing material can be sandwiched between the joint end surfaces of the PC steel material 18.

Fastening with the PC steel material 18 can be carried out through the bottom wall portion 11 in one of the front-rear horizontal direction and the left-right horizontal direction, or both, and can also be carried out vertically through the columns 14. Cover plate 1 for vertical fastening
5 is provided with a receiving hole 25 that vertically penetrates the recess 24 into which the upper end of the column 14 is fitted. It is also possible to fasten the lid plates 15 to each other with the PC steel material 18 in the front-rear and left-right directions.

As shown in FIGS. 1 and 2, box culverts 10B to 10E and box culverts 10G to 10J other than the standard type box culverts 10A and 10F.
Is appropriately rotated 180 degrees in a horizontal plane to be arranged, whereby a water storage tank body whose entire outer peripheral surface is surrounded by the outer wall portion 17 is formed.

A flat artificial substrate is formed by the cover plate groups 14 arranged adjacent to each other, and a baseball field, a tennis court, a parking lot, etc. are constructed by appropriately surface-treating it according to the purpose. Alternatively,
The required thickness of earth is placed on the upper surface of the cover plate 15 to form a plaza, a park, a vegetable garden, or the like.

Although not shown, a water inlet for introducing rainwater on the upper surface of the site is provided on the upstream side of the reservoir device, and a drainage port for draining to the sewer main or river is provided on the downstream side. Provide a drainage port. The water guide port is provided in the lid plate 15, and the drain port is provided in the outer wall portion 17 or the bottom wall portion 11. A pumping pump and a drainage pump can be attached to this reservoir device.

When there is rainfall exceeding the treatment capacity of drainage facilities such as gutters, excess rainwater flows into the internal space of each box culvert 10A to 10J from the water inlet and is temporarily stored and guided to the water outlet. It is discharged sequentially. In the above embodiment, the box culverts 10A to 10J are stacked in two upper and lower stages, but they may be stacked in three or more stages. May be.

[0022]

As described above, in the reservoir device according to the present invention,
Since the opening was provided in the bottom wall of the box culverts other than the bottom, compared to the conventional reservoir device in which the bottom wall and the top wall of the upper and lower box culverts overlap each other,
The internal volume will increase, and the total maximum effective water storage will increase.

Further, in the water retention device of the present invention, a recess is provided in the bottom wall portion of the box culvert other than the lowermost stage, and the upper ends of the columns of the box culvert on the lower stage are engaged with the recesses, so skidding during assembly Can be accurately prevented.

Further, in the water reservoir device of the present invention, since the box culverts which are adjacent to each other in the front, rear, left, right and up and down directions are fastened with the PC steel material, the whole device is firmly integrated, and the box culvert is backfilled with earth and sand or after the service. There will be no misalignment.

Further, in the water retention device of the present invention, the basic form of the box culvert is that the columns are erected at the four corners of the bottom wall, and since there are no wall parts inside the device, the weight is reduced and the workability is improved. Can be improved.

[Brief description of drawings]

FIG. 1 is a plan view showing a left half portion of a water retention device according to an embodiment of the present invention with a cutout.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is a perspective view of a box culvert used in the reservoir device.

FIG. 4 is a perspective view of another box culvert used in the reservoir device.

FIG. 5 is a perspective view of still another box culvert used in the reservoir device.

FIG. 6 is a perspective view of another box culvert used in the reservoir device.

FIG. 7 is a perspective view of still another box culvert used in the water reservoir device.

FIG. 8 is a perspective view of another box culvert used in the reservoir device.

FIG. 9 is a perspective view of still another box culvert used in the water reservoir device.

FIG. 10 is a perspective view of another box culvert used in the reservoir device.

FIG. 11 is a perspective view of still another box culvert used in the water reservoir device.

FIG. 12 is a perspective view of another box culvert used in the water reservoir device.

FIG. 13 is a perspective view of a cover plate used in the water reservoir device.

FIG. 14 is a cross-sectional view of a joint portion made of PC steel material of the water reservoir device.

[Explanation of symbols]

 10A Box Culvert 10B Box Culvert 10C Box Culvert 10D Box Culvert 10E Box Culvert 10F Box Culvert 10G Box Culvert 10H Box Culvert 10I Box Culvert 10J Box Culvert 11 Bottom Wall 12 Bottom Wall Opening 13 Bottom Wall Recess 14 Strut 15 Cover plate 16 Side opening 17 Outer wall 18 PC steel

Claims (1)

[Claims] 1. A box culvert 1 in which columns 14 are erected on the upper surfaces of the four corners of the bottom wall 11 and the bottom wall 11 has no opening.
0A, 10B, 10C, 10D, and 10E are arranged in a plurality of rows in the front, rear, left, and right at the bottom, while pillars 14 are erected on the upper surfaces of the four corners of the bottom wall 11, and the recesses 1 are formed on the lower surfaces of the four corners of the bottom wall 11.
Box culverts 10F, 10G, 1 in which the opening 3 is provided in the bottom wall 11 with the support 14 and the edge frame part left.
OH, 10I, and 10J are arranged in multiple rows in the front, rear, left, and right in addition to the bottom row, and the upper ends of the columns 14 of the lower box culvert group are engaged with the recesses 13 of the bottom wall portion 11 of the upper box culvert group to form a plurality. Individual box culverts are stacked in a plurality of upper and lower stages, a lid plate 15 is provided between the uppermost box culvert groups 10F to 10J, and the side wall openings 16 and the bottom wall 11 of each box culvert 10A to 10J are opened. A water reservoir device in which the internal spaces of a plurality of box culverts are communicated with each other by a section 12 and adjacent box culverts are joined together by fastening PC steel materials 18.