JP2545198B2 - 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 reservoir device for temporarily storing rainwater.

[0002]

2. Description of the Related Art Conventionally, as a reservoir device in which a reservoir is placed underground to temporarily store a large amount of rainwater, a lid is provided on the reservoir, and the upper portion of the reservoir is used as an artificial base,
For example, the structures shown in FIGS. 7 to 10 are known.

The water reservoir device shown in FIGS. 7 to 10 has a substantially box-shaped outer strut body 41a and a middle strut body 41b. In the outer strut body 41a, a flat plate-shaped outer wall portion 45 is formed in a substantially L shape on the flat substrate portion 44 substantially perpendicular to the ground, and an upper plate portion 46 is formed on the upper end of the outer wall portion 45. Set in the same direction as
A wall portion 48 is provided between the tip of the upper plate portion 46 and the tip of the substrate portion 44 in parallel with the outer wall portion 45 to open a circulation port 47 for ensuring the circulation of stored water such as rainwater to form a box shape. . Further, the middle strut body 41b is provided with a flow port 47 instead of the outer wall portion 45 of the outer strut body 41a.
It is formed in a box shape having a wall portion 48 that opens.

Then, the outer strut body 41a is joined in the same direction with the wall portions 48 facing each other so that the outer wall portion 45 becomes linear, and the middle strut body 41b becomes linear in the wall portion 48. The wall parts 48 facing each other with a predetermined gap.
Multiple rows are arranged in parallel between 41a and 41a.

Further, a bottom 49 is formed between the base parts 44, 44 of the outer strut body 41a and the middle strut body 41b by in-situ concrete pouring so that the bottom 49 is formed between the outer strut body 41a and the middle strut body 41b. A flat plate-like lid body 52 is placed on the bridge, and both end sides of the outer strut body 41a, the middle strut body 41b and the lid body 52 which are arranged in parallel are closed by end plate portions 53 formed by on-site concrete pouring, and this end is closed. Board
An inflow port 54 for inflowing stored water such as rainwater and an outflow port 55 for outflowing water are formed in 53 to form a box-like main body 56 of the water reservoir device.
Is formed.

[0006]

By the way, in the water reservoir device having the structure shown in FIGS. 7 to 10, a plurality of outer strut bodies 41a, middle strut bodies 41b, and lid bodies 52 are arranged side by side. Due to dimensional errors, errors due to joint expansion of the joints of the members, etc., the ends in the arranging direction are not aligned. For this reason, the outer strut body 41a, the middle strut body 41b, and the lid body 52 in parallel with each other are provided at the end plate portions of the flat precast block.
If it is closed at 53 and joined by an assembly means such as bolts or inserts, gaps are formed due to variations in the ends in the parallel installation direction due to errors, resulting in water leaks, damage to the ground, and the main body of the water reservoir device 56 There is a problem such as damage to the joint part of. Further, if the error is large, the end plate portion 53 cannot be closed.

Therefore, when an error occurs,
Conventionally, the outer strut body 41a, the middle strut body 41b, and the lid body 52 are closed in parallel with each other by forming end plate portions 53 in a flat plate shape by in-situ concrete pouring to form a box-like water reservoir device. Body
Forming 56. However, this on-site concrete pouring work is complicated and time-consuming, and if the height of the main body 56 of the water reservoir is relatively high, scaffolding is required for the formwork and rebar work. Since the device body 56 is closed and formed in a box shape, the work of removing the scaffolding, formwork, etc. installed inside after the site concrete pouring work becomes very complicated, and the effectiveness of the water reservoir device body 56 is reduced. To do.

Since the workability is complicated, the end plate portion 53 is formed by concrete pouring on site to form the main body of the water reservoir device.
When closing the end portion of 56, the outer strut body 41a, the middle strut body 41b, and the lid body 52 must be arranged so that the area of this end portion becomes small, which limits versatility and construction. Sex is also reduced.

Further, an outer support body 41 for mounting the lid body 52.
Because of the structural strength of the main body 56 of the water reservoir, the a and the middle pillar body 41b are not covered by the wall 48
There is no choice but to arrange it so as to surround both sides of the outflow port 55 through which the stored water such as rainwater that flows in flows out. The main body 56 of the water reservoir is formed so as to be slightly inclined toward the outflow port 55 in order to let the stored water flow out from the outflow port 55.

For this reason, the outer strut body 41 having a plate surface in a direction intersecting with the flow-down direction of the stored water flowing out toward the outlet 55.
Due to the wall portion 48 that is continuous with the end plate portion 53 of the a and the middle strut body 41b, a part of the stored water that mixes dirt and dust is discharged from the outlet 55.
There is a problem that it accumulates without being discharged from the outlet, eventually depositing dirt and dust, and reducing the storage volume.

The present invention has been made in view of the above problems, and it is an object of the present invention to provide a retaining basin device in which stored water is not retained and the workability is improved.

[0012]

The reservoir device of the present invention comprises:
The base part is placed on the ground, a flat plate-shaped wall part is formed on the base part substantially perpendicular to the ground, and a mounting part is formed on the upper end of the wall part. A plurality of pillar bodies that are arranged in parallel so that the wall portions are linearly arranged with the portions facing each other with a gap, and a lid body mounted between the facing mounting portions,
An end body arranged at both ends in the direction of juxtaposition of the plurality of column bodies arranged side by side, wherein the end body is a water reservoir device provided with an inflow port and an outflow port. A bottom plate portion which is placed on the ground and has an upper surface provided with a taper surface which is inclined toward the outflow port, and which is arranged so as to face the substrate portion of the pillar body with a gap for in-situ concrete pouring. An end plate portion formed at one edge of the bottom plate portion substantially perpendicular to the ground and substantially perpendicular to the wall portion of the support body through a flow passage, and the bottom plate portion at an upper end edge of the end plate portion. A top plate portion that is provided substantially parallel to the lid body and is opposed to the end body through a gap for in-situ concrete pouring, and the end body and the pillar body and the lid body that face the end body are , Equipped with skeleton metal fittings that project to face the opposite surfaces of the gap for concrete pouring on site It is obtained by connecting the strut and the lid and said end member to a series by situ concrete hitting the gap for said site concrete strike over these scaffold bracket.

[0013]

In the water reservoir device according to the present invention, the end bodies arranged at both ends of the support body in the juxtaposed direction are formed in a substantially U shape by the bottom plate portion, the end plate portion and the top plate portion. Then, the end body and the pillar body and the lid body facing the end body are covered with the frame fitting projecting in the gap for the concrete pouring on site to perform the concrete pouring on site, and the end body, the pillar body and the lid body are attached. It is formed by connecting in series. For this reason, the error in the parallel installation direction is absorbed by the gap for in-situ concrete pouring, and the in-situ concrete pouring portion is reduced only by covering the skeleton metal fittings in the gap and in-situ concrete pouring, and the workability is improved. Further, since the bottom plate portion of the end body in which the end plate portion is formed on the wall portion of the strut body via the flow passage is provided with the tapered surface inclined toward the outflow port,
The stored water flows out without staying.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The construction of an embodiment of the reservoir device according to the present invention will be described below with reference to the drawings.

Further, in FIGS. 1 to 5, reference numeral 1 is a main body of the water reservoir device, and the main body 1 of the water reservoir device is a block shape integrally made of concrete in which a steel material such as a reinforcing bar (not shown) is embedded inside by precasting. The box culvert 2 serving as a column body, the lid body 3, the low-end body 4a, and the high-end body 4b, which are formed in the above, are formed in a box shape.

The box culvert 2 is provided with a flat plate-shaped substrate portion 6 whose flat surface is placed in contact with the ground (not shown). The ground is formed so that the surface is flat.

Further, the box culvert 2 has a flat plate-like outer wall portion 7 which is provided substantially perpendicular to the ground from one end edge of the base plate portion 6, and the same direction as the outer wall portion 7 from the other end edge of the base plate portion 6. The outer wall 7 and the wall 8 are provided substantially parallel to each other, and a flat plate-shaped upper plate 9 is provided substantially parallel to the substrate 6 at the upper ends of the outer wall 7 and the wall 8 to form a substantially rectangular tube. Has been done.

Then, as shown in FIG. 3, the box culvert 2 is provided on the end surface of the substrate portion 6 on the side where the wall portion 8 is provided.
A part of a steel material such as a reinforcing bar embedded in the concrete forming the above is formed as a reinforcing metal fitting 10 in a protruding manner.

As shown in FIGS. 1, 3 and 4, the wall portion 8 has a notch 12 formed in a substantially trapezoidal shape at one side edge in the vertical direction. The wall 8
A narrow portion 13 having a width dimension shorter than the width dimension of the substrate portion 6 is formed at the base end of the substrate portion 6 side, and a wide portion 14 having substantially the same dimension as the width dimension of the upper plate portion 9 is formed on the upper portion of the wall portion 8. Has been formed.

Further, at the upper end of the wall portion 8, as shown in FIG. 3, a mounting portion 15 is formed which is cut out in an L shape along the upper edge.

On the other hand, the lid 3 is formed in a rectangular flat plate shape.

The low-end body 4a and the high-end body 4b are flat plate-like bottom plates 17 that are placed with their flat surfaces in contact with the ground.
The end plate portions 18a and 18b are provided on one edge of the bottom plate portion 17 substantially perpendicular to the ground, and the upper end edges of the end plate portions 18a and 18b are provided substantially parallel to the bottom plate portion 17 in the same direction. It has a top plate portion 19 and is formed into a substantially U-shaped cross section.

The height of the lower end body 4a in the vertical direction is approximately the same as the height of the wall portion 8 of the box culvert 2, and the height of the high end body 4b is in the vertical direction. The dimension is formed to be higher than the height dimension of the wall portion 8 of the box culvert 2.

Further, the low-end body 4a and the high-end body 4b are formed in the concrete forming the low-end body 4a and the high-end body 4b at the tip end surfaces of the bottom plate portion 17 and the top plate portion 19 on the protruding side. A part of a steel material such as a reinforcing bar buried in is formed as a frame fitting 20 so as to project outward.

The box culvert 2 is installed in parallel so that the lower surface of the substrate portion 6 is grounded continuously in the width direction so that the wall portions 8 face each other with a predetermined distance inside. Has been done. Further, between the mounting portions 15 and 15 of the box culvert 2 facing each other, the lid body 3 is disposed with both longitudinal end portions mounted thereon.

The box culverts 2 and the lids 3 located at both ends of the box culverts 2 and the lids 3 juxtaposed in the juxtaposed direction have the box culverts 2 and the lids 3 on the end faces in the juxtaposed direction. A part of a steel material such as a reinforcing bar embedded in the constituent concrete is formed as a frame fitting 20 so as to project outward.

Further, in the box culvert 2, the ends of the wide portions 14, 14 of the adjacent box culverts 2, 2 in the width direction are brought into contact with each other, and the narrow portions 13, 13 are stored by the notches 12, 12. A circulation port 22 through which water can flow is formed and arranged side by side.

Further, box culverts 2 arranged side by side
And, one end side in the juxtaposed direction of the lid body 3 is faced with the end faces from which the frame fittings 20 project through a predetermined gap, for example, a gap of about 15 to 20 cm, and the low end body 4a and the high end body 4b. Are arranged in parallel, and the water reservoir device main body 1 is formed in a box shape.

The low-end body 4a and the high-end body 4b located at the four corners of the main body 1 of the water reservoir have end plate portions 18a, 18b formed continuously in L-shape on their side surfaces. Further, the high end body 4b is arranged such that the bottom plate portion 17 is located at a position lower than the base plate portion 6 of the box culvert 2 so that the upper end surface is flush.

By disposing the low end body 4a and the high end body 4b, a flow passage 23 through which the stored water can flow is formed between the wall portion 8 of the box culvert 2 facing each other.

Then, a bottom portion 24 is formed between the base plate portions 6 and 6 of the box culverts 2 and 2 arranged side by side by concrete pouring on site so that the top surfaces are flush with each other. Further, the box culvert 2 and the lid 3 and the lower end body 4a
As shown in FIG. 6, it is embedded so as to cover the skeleton metal fittings 20 in the gap where the skeleton metal fittings 20 are located with the high end body 4b, and concrete 25 is formed by on-site concrete pouring. The box culvert 2 and the lid body 3 are connected to the low-end body 4a and the high-end body 4b to form the reservoir body 1 in the shape of a box.

Further, one of the lower end bodies 4a located on one side of the lower end body 4a of the main body 1 of the water reservoir is provided with an inflow port which is located above the end plate portion 18a and through which rainwater or the like flows in. An opening 27 is formed, and an inlet pipe 28 for introducing rainwater or the like into the water reservoir device body 1 is connected to the inlet 27.

Further, in the high end body 4b of the high end body 4b of the main body 1 of the water reservoir, which is located substantially at the center, the base end of the end plate 4b flows into the main body 1 of the water reservoir, and is stored. An outlet 29 for discharging the stored water out of the main body 1 of the reservoir is formed with an opening, and an outlet 30 for discharging the stored water flowing out through the outlet 29 is connected to the outlet 29.

In the vicinity of the outlet 29 on the downstream side of the main body 1 of the water reservoir, a storage portion 32 is defined by an enclosure wall 31 so as to surround the outlet 29. The height of the surrounding wall 31 is formed to be slightly lower than the upper end of the flow port 22 formed by the box culverts 2 arranged side by side.
Further, on the outside of the storage portion 32, a gutter portion 33 is formed so that the bottom surface is substantially the same depth as the bottom surface of the storage portion 32 so as to surround the storage portion 32.

Then, on the upper surface of the bottom plate portion 17 of the high end body 4b constituting the bottom portion of the flow passage 23, there is provided a water collecting portion provided with a tapered surface 35 which is inclined downward toward the reservoir portion 32 surrounding the outlet 29. 36 is
The high end bodies 4b located on both ends side by side are high, and are formed by in-situ concrete pouring to incline so that they gradually become lower so as to communicate with the gutter portion 33.

A leak hole 37 is formed in the lower portion of the enclosing wall 31 of the storage section 32 at a position corresponding to the upper surface of the bottom section 24 of the main body 1 of the water reservoir device to allow a part of the stored water to flow into the storage section 32. Has been formed.

Further, an inspection port 38 is formed in the top plate portion 19 of the high end body 4b which opens the outflow port 29 so that an operator can enter the storage portion 32. Further, the box culvert 2 having the inspection port 38 formed in the upper plate portion 9 is arranged at an appropriate position to form the water reservoir device body 1. A ladder 39 is provided below the inspection port 38, and the inspection port 38 is normally closed by a manhole cover or the like (not shown).

The main body 1 of the water reservoir is arranged and formed such that its bottom surface is slightly inclined toward the outlet 29 which is the downstream side.

Next, the assembling operation of the above embodiment will be described.

First, the place where the main body 1 of the water reservoir is installed is excavated to form a smooth base surface (not shown), and gravel, gravel or the like is spread over the upper surface of the base surface to a flat surface. To form a ground. In addition, the position on the downstream side of the main body 1 of the basin is further excavated to a predetermined depth, and the portion where the storage part 32 and the gutter part 33 are located is dug in a plane convex shape toward the upstream side. Form smoothly.

On the other hand, the box culvert 2 and the lid 3 are made of concrete in which a steel material such as a reinforcing bar is embedded in advance.
The end body 4 and the end body 4 are integrally formed in a block shape by precasting.

Then, on the ground not shown, the box culvert 2 is made to face the inside with the wall portion 8 at a predetermined distance, and the outer wall portion 7 is continuous in the width direction so as to be flush with the substrate portion 6. The bottom surface of the box is brought into contact with the ground, the widthwise ends of the wide portions 14, 14 of the adjacent box culverts 2, 2 are brought into contact with each other, and the cutouts 12, 12 are provided between the narrow portions 13, 13 to store water. A distribution port 22 through which the liquid can be distributed is formed and installed in parallel. The box culverts 2 arranged side by side at the downstream end are arranged side by side so as to face each other through the portion excavated in a convex shape that is one step lower.

Furthermore, the opposing box culverts 2,
Between the two mounting portions 15 and 15, the lid body 3 is disposed with both ends in the longitudinal direction mounted.

At both ends of the box culvert 2 and the lid 3 arranged side by side in the juxtaposed direction, the box culvert 2 and the lid 3 having the frame fittings 20 projectingly formed on one end face in the width direction are provided. 20 are arranged so as to project toward both ends in the arranging direction. Further, a box culvert having an inspection port 38 formed in the upper plate portion 9 of the box culvert 2 and a ladder 39 provided below the inspection port 38 on the inner surface of the outer wall portion 7 facing the wall portion 8 is provided. 2 are arranged at appropriate intervals. Each inspection port 38 is closed by a manhole cover or the like (not shown).

Next, at the position on the upstream side of the juxtaposed box culvert 2 and lid 3 in the juxtaposed direction, the low end body is placed.
The protruding frame fitting 20 of 4a is directed toward the frame bracket 20 of the box culvert 2 and the lid 3, and between the end faces of the box culvert 2 and the cover 3 and the end face of the low end part 4a, for example, about 15 to 20 cm. A plurality of low-end parts 4a are arranged side by side in the width direction which is a direction perpendicular to the direction in which the box culverts 2 and the lid 3 are arranged side by side with an interval for on-site concrete pouring. In addition, the low end body 4a having the inflow port 27 opened in the end plate portion 18a is arranged at the end portion of the plurality of parallel low end bodies 4a.

Further, the box culverts 2 arranged side by side
And at the position on the downstream side in the direction in which the lids 3 are arranged side by side, on the ground excavated one step deep, the high end body 4b is made to face the frame metal fitting 20 in the same manner as the low end body 4a, and for concrete pouring on site. A plurality of box culverts 2 and lids 3 are arranged side by side in the width direction and the box culverts 2 with a space of. In addition, this high end body 4b
In parallel installation, the upper end surface of the high end body 4b becomes flush with the upper end surface of the box culvert 2 and the bottom plate portion 17 of the high end body 4b is formed.
Is arranged at a position lower than the substrate portion 6 of the box culvert 2. Further, a high end body 4b having an inspection opening 38 formed in the top plate portion 19 and an outlet 29 formed in the end plate portion 18b.
Is a portion excavated one step lower, and is arranged at a position approximately at the center of the plurality of high end bodies 4b arranged in parallel.

Next, box culverts 2 and 2 arranged in parallel
Reinforcing metal fittings 10, 10 projecting from the opposite end surfaces of the board parts 6, 6 are embedded between the board parts 6, 6 of the board parts 6, 6 and the bottom part 24 is made by concrete pouring so as to be flush with the upper surface of the board part 24. To form. At this time, the skeleton metal fittings 20 projecting from the bottom plate portion 17 of the high end body 4b are formed so as to be embedded continuously on the ground where the portion is excavated in a convex shape that is one step lower. Further, the box culvert 2 and the lid 3, the low end body 4a and the high end body 4b.
In the space for in-situ concrete pouring where the skeleton metal fitting 20 is located, it is embedded so as to cover the skeleton metal fitting 20 and struck in-situ concrete to form the in-situ concrete 25. With this in-situ concrete 25, the box culvert 2, The lid body 3, the low-end body 4a, and the high-end body 4b are integrally connected to each other to form a reservoir space inside the water reservoir device body 1 and form a box shape.

The main body 1 of the water reservoir is formed so that its bottom surface is slightly inclined toward the outlet 29 on the downstream side.

Then, on the upper surface of the bottom portion 24 which is lower by one step, the trough portion 33 is defined on the outer side and the storage portion 32 is defined on the inner side. It is formed by continuous concrete pouring on 18b.

Further, an inlet pipe 28 and an outlet passage 30 are connected to the inlet 27 and the outlet 29, respectively.

When storing rainwater or the like, rainwater or the like is introduced from the introduction pipe 28 through the inflow port 27 into the main body 1 of the water reservoir device.
The rainwater that has flowed into the inside of the storage space is temporarily stored and then flows down to the downstream side, part of which flows into the storage part 32 through the leak hole 37 and part of which flows into the storage part 32. , Overcoming the surrounding wall (31) and flowing into the reservoir (32), and the stored water is discharged from the outlet (29) opening toward the inside of the reservoir (32) to the outflow passage (30).

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

A flat plate-shaped bottom plate portion 17 placed on the ground,
An end plate portion 18a provided on the bottom plate portion 17 substantially perpendicular to the ground
, 18b and a top plate portion 19 provided on the end plate portions 18a, 18b in a direction substantially perpendicular to the bottom plate portion 17 in a substantially U-shape.
And the high end body 4b is formed.

And, these low end body 4a and high end body
4b, a plurality of box culverts 2 arranged in parallel, and a bottom plate portion 17 and a box culvert 2 of the box culvert 2 on both end sides in the juxtaposed direction of the lid 3 mounted between the mounting portions 15 and 15 of these box culverts 2. The top plate portion 19 is opposed to the base plate portion 6 through a gap for in-situ concrete pouring, and the top plate portion 19 is opposed to the lid body 3 through a gap for in-situ concrete pouring, and the inner surface side of the end plate portions 18a and 18b and the box culvert. Wall part 2
A flow passage 23 is formed in parallel with the end portion of the. Further, on-site concrete driving is performed by covering the frame metal fittings 20 facing the gap for on-site concrete driving, and the low end body 4a and the high end body are
4b and the box culvert 2 and the lid 3 are connected in series to form.

Therefore, an error in joint direction due to an error such as joint extension and a dimensional error of each component can be absorbed in the space for concrete pouring on site, and only the frame metal fitting 20 is covered in the space and concrete pouring on site is performed. The workability of the concrete is improved by reducing the number of concrete pouring parts on site. Moreover, since the low-end body 4a and the high-end body 4b are substantially U-shaped, between the end plate portions 18a and 18b of the low-end body 4a and the high-end body 4b and the wall portion 8 of the box culvert 2. A flow passage (23) through which stored water can flow can be formed as an opening, and a tapered surface (35) inclined toward the outflow port (29) at the bottom plate portion (17) of the low end body (4a) and the high end body (4b).
Since the water collecting portion 36 having the above is provided, it is possible to prevent the stored water from accumulating in the low end body 4a and the high end body 4b and the wall portion 8 of the box culvert 2 as in the conventional case, and the total amount of stored water flows. It can be guided to the outlet 29 and can surely flow out.

Further, since the low end body 4a and the high end body 4b are substantially U-shaped, the one in which the low end body 4a and the high end body 4b are formed in a flat plate-shaped precast block as in the conventional case is During construction, it is not necessary to hold the low-end body 4a and the high-end body 4b in a standing position with a holder or the like to connect and connect them.
It can be placed on the ground without a retainer, improving workability.

Further, when it is necessary to form the main body 1 of the basin in an elongated shape depending on the ground condition and installation conditions, conventionally, the low-end body 4a and the high-end body 4b are formed by in-situ concrete pouring. If this is the case, the construction will be complicated, so the main body 1
The low-end body 4a and the high-end body 4b must be formed on site by concrete pouring at both ends in the longitudinal direction of the above. Can be formed as an end face, and the water reservoir device body 1 can be easily formed regardless of the ground condition, installation conditions, and the like.

In the above embodiment, the box culvert 2 serving as the support pillar is formed in a substantially rectangular tube shape. However, the substrate portion 6 is divided into two and the substrate portion 6 is substantially L-shaped.
A side body having a character-shaped outer wall portion 7 and a support portion having a substantially T-shaped wall portion 8 provided on the substrate portion 6 are arranged in parallel to face each other. The main body 1 of the water reservoir having a configuration in which the lid 3 is placed in the space, and the pillars formed by dividing each part into the flat outer wall portion 7, the lid 3, and the separate flow port 22. The same effect can be obtained by a configuration in which the body wall portion 8 is assembled to form the water retention device body 1.

The shape of the notch 12 provided in the wall portion 8 of the box culvert 2 may be any shape that forms the flow port 22 so that the stored water can flow. Furthermore, although the bottom 24 was formed between the box culverts 2 and 2 by in-situ concrete pouring, a part of the base 6 or the bottom 24 of the box culvert 2 was opened, and a part of the stored water was opened from this opening. It may be an infiltration type that penetrates into the ground. Further, the storage part 32 may not be defined by the surrounding wall 31, and the outlet 29 may be opened directly toward the storage space.

Then, the box culvert 2, the lid body 3,
When assembling each member such as the low-end body 4a and the high-end body 4b, they are tightly connected with each other by bolts, nets, etc., integrally formed with an adhesive, etc. Alternatively, any method such as integrally assembling by engagement or the like may be used.

Further, the frame fitting 20 has been described by forming a part of the steel material such as the reinforcing bar forming each component so as to project. However, when forming each component, one end side of the dedicated frame fitting 20 is separately attached. It is formed by embedding, or by separately forming the frame metal fitting 20 on the end surface of the space for concrete pouring on site, holding concrete 25 that is cast on site before hardening, reinforcing after hardening, low end part 4a and high end Any shape and formation method may be used as long as the connection strength between the body 4b and the support body and the lid 3 can be improved.

[0062]

EFFECTS OF THE INVENTION According to the water retention device of the present invention, the end bodies disposed on both ends of the support body in the juxtaposed direction are formed in a substantially U shape, and the end body, the support body and the lid body are formed. By covering the frame fittings projecting oppositely and connecting them in series in the space for concrete pouring on site, the error in the parallel installation direction can be absorbed by the space for concrete pouring, and the frame fittings can be covered. Only by pouring concrete on site, it is possible to reduce the portion of concrete pouring on site and improve the workability. Furthermore, since the end body is approximately U-shaped, it can be easily installed by placing it on the ground, and the bottom plate of the end body is provided with a tapered surface that slopes toward the outflow port. Can flow out without staying, and the storage space can be effectively used.

[Brief description of drawings]

FIG. 1 is a cross-sectional view taken along the line AA of FIG. 5 in which an embodiment of a water retention device of the present invention is partially cut away.

FIG. 2 is a sectional view taken along line BB of FIG. 5 above.

3 is a sectional view taken along line CC of FIG.

FIG. 4 is a sectional view taken along line DD of FIG.

FIG. 5 is a partially cutaway plan view showing the same water reservoir device body as above.

FIG. 6 is a cross-sectional view showing a portion of the above-mentioned site concrete pouring gap.

FIG. 7 is a partially cutaway plan view showing an example of a conventional reservoir device.

8 is a sectional view taken along line EE of FIG.

FIG. 9 is a sectional view taken along line FF of FIG.

10 is a sectional view taken along line GG of FIG. 7 above.

[Explanation of symbols]

 1 Reservoir device main body 2 Box culvert as pillar body 3 Lid body 4a Low end body 4b High end body 6 Board part 8 Wall part 15 Mounting part 17 Bottom plate part 18a, 18b End plate part 19 Top plate part 20 Frame bracket 23 Inlet 25 In-situ concrete 27 Inlet 29 Outlet 35 Tapered surface

Claims (1)

(57) [Claims] 1. A substrate portion mounted on the ground, a flat plate-shaped wall portion formed on the substrate portion substantially perpendicular to the ground, and a mounting portion formed at an upper end of the wall portion. Then, a plurality of pillar bodies in which the mounting portions are opposed to each other with a space therebetween and the wall portions are linearly arranged side by side, a lid body mounted between the opposing mounting portions, and An end body arranged at both ends of the installed support body in the direction of juxtaposition, and a water reservoir device provided with an inflow port and an outflow port, wherein the end body is on the ground. A bottom plate portion that is placed and has a tapered surface whose upper surface is inclined toward the outlet, and that is disposed so as to face the base plate portion of the pillar body with a gap for in-situ concrete pouring; An end plate portion that is formed substantially perpendicular to the ground on one edge of the portion and that is formed substantially perpendicular to the wall portion of the pillar body through a flow passage; The top plate portion provided substantially parallel to the bottom plate portion at the upper end edge of the end plate portion and facing the top plate portion with a gap for in-situ concrete pouring, the end body and this end body The column body and the lid body facing each other are provided with frame fittings projecting so as to oppose to the opposite surfaces of the gap for in-situ concrete pouring. By doing this, the end body, the pillar body, and the lid body are connected in series.