JPH0545660Y2 - - Google Patents

Description

[Detailed description of the invention] [Purpose of the invention] (Field of industrial application) The present invention relates to a reservoir device that temporarily stores a large amount of rainwater, and in particular, a system in which a plurality of box culverts are stacked vertically. The present invention also relates to a device arranged horizontally in a plurality of rows.

(Prior Art) Conventionally, in a reservoir device in which a reservoir is placed underground and the upper surface of the reservoir is used as an artificial base, a plurality of boxes are used, for example, as described in Japanese Utility Model Application Publication No. 198676/1983. The culverts are stacked vertically and arranged horizontally in multiple rows, with a bottom plate between the bottoms of the bottom box culverts in each row, and a floor plate between the tops of the top box culverts in each row. A similar structure was adopted. In addition, in order to form a waterway that communicates between the inside of a plurality of box culverts and between box culverts, an opening is provided in the side surface of each box culvert, and the upper and lower surfaces of vertically adjacent box culverts are Conventionally, the vertically extending openings have a rectangular shape with a relatively small aspect ratio.

(Problem to be solved by the invention) However, in the above conventional structure, only the distance between the bottoms of the box culverts at the bottom of each row and the distance between the tops of the box culverts at the top are maintained by the bottom plate and the floorboard. As a result, the box culverts tend to tilt, causing the upper part of the lower box culvert and the lower part of the upper box culvert to displace inward due to the earth pressure applied from the outside to the box culvert in the outermost row. It was hot. In addition, when placing the upper box culvert, there was a problem that there was no scaffolding or scaffolding had to be set up only for the work, resulting in poor construction workability. Furthermore, since the opening that passes through the box culvert in the vertical direction is rectangular with a relatively small aspect ratio, if the opening area is sufficient, the opening will be relatively large both vertically and horizontally. There was a risk of the worker falling.

The present invention aims to solve the above-mentioned problems, and is designed to resist earth pressure in a retarding pond system in which multiple box culverts are stacked vertically and arranged horizontally in multiple rows. The primary purpose is to ensure that the spacing between the box culverts in each row is maintained, and to facilitate the construction of the box culverts in the upper row in particular. A second purpose is to eliminate the danger of workers falling from the openings on the top or bottom of the box culvert during construction.

[Structure of the idea]

(Means for Solving the Problems) The retarding basin device of the present invention stacks a plurality of box culverts vertically and arranges them horizontally in a plurality of rows. A bottom plate is provided between the lower parts, and a floor plate is provided between the upper parts of the box culverts at the top of each adjacent row, and the openings provided in at least the side parts of the box culverts allow the interior of the plurality of box culverts and between the box culverts to be A waterway is formed by connecting the two. In the retarding basin device of claim (1), in order to achieve the first object, an upward stepped portion is formed at the upper part of the outer surface of the box culvert, and the boxes other than the top step of each adjacent row are An intermediate plate is mounted on the horizontally opposite step portion of the culvert, the intermediate plate spanning over and abutting the outer side of the vertically adjacent box culvert.

Further, in the retarding basin device of claim (2), openings are provided in the upper and lower surfaces of vertically adjacent box culverts that overlap with each other to form water channels. In order to achieve the second objective, the openings in the upper and lower surfaces of the box culvert are provided as elongated notches at the edge portions of the upper and lower surfaces of the box culvert that are joined to other box culverts. It is something that

(Function) In the retarding pond device of claim (1) of the present invention, when constructing underground, for example, the box culvert is
When stacking them in tiers, first place the lower box culverts in multiple rows, provide a bottom plate between the lower parts of the lower box culverts in each adjacent row, and then install the upper part of the outside surface of the lower box culvert in each adjacent row. In this case, the intermediate plate is placed on the stepped portions that are horizontally opposite to each other. Next, using this intermediate board as a scaffold, work is carried out to place the upper box culvert on top of the lower box culvert.
Furthermore, a floor plate is provided between the upper portions of the upper box culverts of each adjacent row. In this state, the side surface of the intermediate plate straddles and abuts the outer surface of the vertically adjacent box culvert. By this,
The box culverts are prevented from inclining so that the upper part of the lower box culvert and the lower part of the upper box culvert are displaced inward against the earth pressure applied from the outside to the box culvert in the outermost row. Ensures spacing between box culverts in rows is maintained.

In addition, in the reservoir device of claim (2), when the box culverts are lined up in a row, the elongated notch on the edge of the box culvert that is joined to another box culvert on the top or bottom surface allows the lower stage In the case of box culverts, narrow groove-like openings are formed in the upper surface of the box culvert and in the lower surface of the box culvert, which overlap with each other. When a construction worker or the like is present in the culvert, the worker or the like is prevented from falling through the vertical opening.

(Embodiment) Hereinafter, the configuration of an embodiment of the retarding pond device of the present invention will be described based on FIG. 1 and FIG. 2.

11a, 11b, 11c, 11d, 11e, 1
1f (subscripts a, b, c, d, e, f are omitted as appropriate)
is a rectangular cylindrical box culvert, and this box culvert 11 is integrally formed of concrete with reinforcing bars embedded inside, and side parts 13 are erected on both side edges of a lower part 12, and these side parts An upper surface portion 14 is provided between the upper edges of the surface portions 13 . Note that the height of one box culvert 11 is, for example, about 4 m. A plurality of box culverts 11 are stacked in two layers, one above the other, and connected in the front-back direction to form a row, and a plurality of these rows are arranged horizontally in parallel with each other at a predetermined interval. However, the box culverts 11 other than both ends of each row have openings 15 at both front and rear end surfaces. On the other hand, the box culverts 11 at the front and rear ends of each row are closed at the front end surface or rear end surface as a front surface or rear surface (not shown), respectively, and only the rear end surface or front end surface is respectively an opening 15. ing.

In addition, box culvert 1 on both left and right rows
1a, 11c, 11d, and 11f, and on both side surfaces 1 of the other box culverts 11b and 11e.
An opening 16 is formed in 3. This opening 1
6 is located on the lower front side or rear side of the side surface portion 13. In addition, the lower box culvert 11 is attached to the box culvert 11 other than the front end of each row.
a, 11b, and 11c, the upper box culvert 11 is attached to the front edge of the upper surface portion 14.
d, 11e, and 11f, there are elongated cutout portions 1 on the front edge of the lower surface portion 12 that are overlapped with each other.
7 and 18 are formed, respectively. The widths of the notches 17 and 18 are so large that a person cannot pass through them.

In addition, the opening 15 of each box culvert 11
Projections 19 are formed at the upper portions of certain side surfaces 13, and the upper surfaces of these projections 19 form horizontal step portions 20. Furthermore, especially the box culverts 11a, 11c, 1 in the rows on both the left and right sides.
1d and 11f have lower box culvert 1.
Projections 21 are formed on both edges of the upper surface of 1a and 11c, and the upper box culvert 1
Concave grooves 22 that are engaged with the protrusions 21 are formed on both side edges of the lower surfaces of 1d and 11f. Note that these protrusions 21 and grooves 22 are not necessarily necessary.

Reference numeral 26 denotes a bottom plate made of concrete with reinforcing bars embedded therein, and this bottom plate 26 is provided between the lower portions of the lower box culverts 11a, 11b, and 11c in each adjacent row.

Further, 27 is a floor plate made of concrete with reinforcing bars embedded therein, and this floor plate 27 is connected to the upper box culverts 11d, 11e, and 11f of each adjacent row.
They are each mounted on stepped portions 20 facing each other in the horizontal direction.

Furthermore, 28 is an intermediate plate made of concrete in which reinforcing bars are embedded, and this intermediate plate 28 is connected to the box culverts 11a, 11b at the bottom of each adjacent row.
11c, each of which is mounted on horizontally opposite step portions 20. Furthermore, protrusions 29 are formed on both side edges of the lower surface of the intermediate plate 28 . Note that the intermediate plate 28 may be formed to have the same thickness as a whole without forming the protrusion 29. Further, the height of both side surfaces of the intermediate plate 28 is equal to the height of the stepped portions of the lower box culverts 11a, 11b, 11c.
It is larger than the height from 0 to the outer upper surface.

Next, the operation of the above embodiment will be explained.

During construction, for example, first, the box culvert 11a in the lower stage of the outermost row is placed and fixed to the corner of the concave base 31 formed underground.
The lower box culvert 11b in the adjacent row is arranged and fixed in parallel at a predetermined distance from the box culvert 11a. Next, reinforcing bars are buried on the base 31 between the lower box culverts 11a and 11b in the adjacent rows, and a bottom plate 26 is formed by pouring concrete on site.
Next, an intermediate plate 28 is placed on the step portions 20 of the lower box culverts 11a and 11b of the adjacent rows.
The protrusion 29 and the box culverts 11a, 11b
The projection 19 may be fixed by a bolt or the like.

Next, the intermediate plate 2 mounted as described above
8 as a scaffold, place the upper box culvert 11d on the lower box culvert 11a of the outermost row, and then place the upper box culvert 11e on the lower box culvert 11b of the adjacent row. . Furthermore, the upper box culverts 11d in both adjacent rows,
A floorboard 27 is mounted on the stepped portion 20 of 11e. Note that the both side edges of the floor plate 27 and the protrusions 19 of the box culverts 11d and 11e may be fixed with bolts or the like.

In this way, the lower box culvert 11
a, 11b, 11c are always placed in advance, and after the intermediate plate 28 is placed, the adjacent upper box culverts 11d and 11c are placed using this intermediate plate 28 as a foothold.
11e and 11f are arranged.

By the way, when the box culverts 11 are connected in the front-rear direction, the lower box culverts 11
A narrow groove-shaped opening is formed by the cutout portions 17 and 18 in the front edge portions of the upper surface portions 14 of a, 11b, and 11c or the lower surface portions 12 of the upper box culverts 11d, 11e, and 11f joined to other box culverts 11. part is formed. However, this opening is wide enough that a person cannot pass through, so the lower box culverts 11a, 11
When there is a construction worker or the like above b, 11c or inside the upper box culverts 11d, 11e, 11f, there is no danger that the worker or the like will fall through the vertical opening.
Nevertheless, this opening has a sufficient overall opening area due to its elongation.

In this way, the box culvert 11, the bottom plate 2
6. By arranging the intermediate plate 28 and the floor plate 27, the openings 15 and 16 of the box culvert 11 are
A waterway 32 is formed by the notches 17 and 18, which communicates between the insides of the plurality of box culverts 11 and between the box culverts 11. For example, an inflow pipe is connected to the rear end of the water channel 32, and an outflow pipe is connected to the front end thereof. Furthermore, the upper box culvert 11d,
The artificial base formed by the upper surface part 14 of 11e and 11f and the floorboard 27 is surface-treated as appropriate depending on the purpose to create a baseball field, tennis court, parking lot, park, etc.

Then, a large amount of rainwater is transferred from the inflow pipe to the waterway 32.
It flows into the pipe, is temporarily stored, and is sequentially discharged from the outflow pipe.

According to the above configuration, when arranging the upper box culverts 11d, 11e, and 11f, the intermediate plate 28 can be used as a scaffold, making the construction work easier. Further, both sides of the intermediate plate 28 mounted on the stepped portion 20 of the lower box culverts 11a, 11b, 11c of each adjacent row are vertically adjacent to each other.
Since the box culverts 11 in the outermost row straddle and abut against the outer surfaces of
The lower box culvert 11 resists the earth pressure applied from the outside to a, 11d, 11c, and 11f.
The box culverts 11 are prevented from inclining so that the upper parts of the box culverts 11d, 11e, and 11f and the lower parts of the upper box culverts 11d, 11e, and 11f are displaced inward, and the interval between the box culverts 11 in each row is ensured. Retained.

In addition, as shown in FIG. 2, the intermediate plates 28 are mounted on the step portions 20 of a pair of lower box culverts 11 adjacent to each other in the left-right direction, and as shown in FIG. 2 in the lower row adjacent to
It is also possible to straddle the stepped portions 20 of the pair of box culverts 11 and to place them on every other box. According to the configuration shown in FIG. 2, the number of intermediate plates 28 can be approximately halved.

In addition, in the above embodiment, the box culvert 1
Although box culverts 1 are stacked in two layers vertically, the box culverts may be stacked vertically in three or more layers.

[Effect of idea]

According to the present invention, the following effects can be obtained.

In the reservoir device of claim (1), a bottom plate is provided between the lower parts of the box culverts in the lowest row of each row, a floor plate is provided between the upper parts of the box culverts in the top row, and a floor plate is provided between the upper parts of the box culverts in the uppermost row. An intermediate plate was provided on the stepped portion of box culverts other than the top step of each row, the side surface of which spans and comes into contact with the outer surface of the vertically adjacent box culvert. This prevents the box culvert from tilting due to pressure.
The distance between the box culverts in each row can be reliably maintained, and the intermediate board can be used as a scaffold when placing the upper box culverts, improving workability in construction.

In the retarding basin device of claim (2), the openings of the upper and lower surfaces of vertically adjacent box culverts, which are overlapped with each other, are joined to other box culverts in the upper and lower surfaces of the box culverts. Since the notch is provided as an elongated notch at the end edge, the width of the opening can be made large enough that a person cannot pass through it without reducing the overall opening area of the opening that communicates with the top and bottom. Therefore, it is possible to eliminate the danger of a worker falling from the opening during construction, and safety is improved.

[Brief explanation of the drawing]

Fig. 1 is a front cross-sectional view showing one embodiment of the retarding basin device of the present invention, Fig. 2 is a plan view of the arrangement of the upper and lower box culverts and intermediate plates, and Fig. 3 is the other embodiment of the retarding basin device of the present invention. FIG. 3 is a plan view of a lower box culvert and an intermediate plate arranged according to an embodiment of the present invention. 11, 11a, 11b, 11c, 11d, 11
e, 11f...Box culvert, 12...Bottom surface part, 13...Side surface part, 14...Top surface part, 15,
16... Opening, 17, 18... Notch, 2
0...Step part, 26...Bottom plate, 27...Floor plate, 2
8... Middle part, 32... Waterway.

Claims (1)

[Claims for Utility Model Registration] (1) A plurality of box culverts are stacked vertically and arranged horizontally in a plurality of rows, and a bottom plate is provided between the lower parts of the lowest box culverts in each adjacent row. In addition, a floor plate is provided between the upper parts of the box culverts at the top of each adjacent row, and the insides of the plurality of box culverts and the box culverts are communicated through openings provided at least on the side surfaces of the box culverts. In the retarding basin device, an upward step is formed at the upper part of the outer surface of the box culvert, and vertically adjacent steps are formed on the horizontally opposite step of the box culvert other than the top step of each adjacent row. A retarding pond device characterized by mounting an intermediate plate that spans the outer surface of a box culvert and has its side surface abutted. (2) A plurality of box culverts are stacked vertically and arranged horizontally in multiple rows, and a bottom plate is provided between the bottoms of the bottom box culverts in each adjacent row, and A floor plate is provided between the upper parts of the upper box culverts, and a plurality of openings are provided on the side surfaces of the box culverts and overlapping openings are provided on the upper and lower surfaces of the vertically adjacent box culverts. In a reservoir device in which a water channel is formed by communicating inside and between box culverts, openings on the upper and lower surfaces of the box culverts are connected to other boxes on the upper and lower surfaces of the box culverts. A retarding pond device characterized by having a long and narrow notch formed in the edge portion connected to the culvert.