JPH0826572B2 - Rainwater storage tank - 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 or semi-underground rainwater storage tank for temporarily storing rainwater.

[0002]

2. Description of the Related Art In recent years, with the increase in buildings and the increase in the pavement ratio on the surface of the earth, rainwater does not penetrate underground and flows into sewers and rivers at a stretch when a large amount of rainfall occurs. appear. On the other hand, there is a problem that the flow rate of rivers is usually low and the water quality deteriorates, and the groundwater also dies. Therefore, a technique has been developed in which rainwater is temporarily stored in a storage tank and the outflow amount to the river is adjusted.

In a rainwater storage tank disclosed in Japanese Utility Model Laid-Open No. 62-66977, a bottom plate and a top plate are formed to have the same shape and the same thickness, and they are connected to each other at right and left four corners at right angles. The main body block in which the bottom plate portion and the top plate portion are integrally connected is used, and the main body blocks are arranged side by side in the front-rear and left-right directions so that the side surface openings provided between the columns communicate with each other.

However, in this rainwater storage tank , when constructing a polygonal rainwater storage tank on a deformed land, the blocks to be installed on the outer peripheral portion are for molding in conformity with the shape of the outer peripheral portion. Blocks of various plane shapes must be individually molded using the mold, which increases the equipment cost of the mold.

When this is disliked, the outer peripheral portion of the rainwater storage tank has to be formed stepwise for each block. In that case, the corners of the block in the outer peripheral portion are separated from the outer line of the deformed site. Since it should not project, a triangular unused space is formed stepwise between the outer line and the block of the outer peripheral portion.

[0006]

Therefore, the object of the present invention is to ensure the necessary and sufficient structural strength.
Also, if necessary, it can respond to deformed land at low cost, and when the block of the constituent element is deformed and molded, an underground type or semi-underground type rainwater storage tank that can easily and accurately insert and fix the reinforcing column of the block Is to provide.

[0007]

The rainwater storage tank 1 according to the present invention comprises a main body block 6, a peripheral block 16 and a corner block 26, which will be described below with reference to the accompanying drawings. Composed. The main body block 6 has a horizontal beam 10 vertically connected between upper ends 9 and 9 of pillars 8 which are continuously provided at four corners at the front, rear, left, and right of a bottom plate 7, and the horizontal beams 10 at the front, rear, left, and right. , An upper opening 11 is formed between
In the middle of the pillar 8, the upper part 6a and the lower part 6b are divided and molded.

In the block 16 for the peripheral portion, the upper surface plate portion 17 is connected to the upper end portion of one side surface plate portion 25 at a right angle, and the bottom surface plate portion 18 is connected to the lower end portion of the side surface plate portion 25 at a right angle. The sleeve wall portions 23, 23 that connect the end portions of the upper surface plate portion 17 and the bottom surface plate portion 18 are connected to each other at both side edges of the side surface plate portion 25 at a right angle. Part 16a and lower part 1
It is divided into 6b and molded.

The corner block 26 includes two side plate portions 2.
8 and 29 are connected to each other at a right angle, and a bottom plate 27 is connected to the lower ends of the side surface plates 28 and 29 at a right angle.
An upper surface plate portion 30 is connected to the upper end portion 9 at a right angle, and the upper side portion 26a and the lower side portion 26 are provided in the middle of the side surface plate portions 28 and 29.
It is divided into b and molded.

The main body block 6 is arranged side by side in the front-rear and left-right directions, and the front, rear, left and right side surface opening portions 2 of the main body block 6 group are closed by a peripheral block 16 provided in a row. A space between the row of peripheral block 16 in the front-rear direction and the row of peripheral block 16 in the left-right direction is closed by a corner block 26. The upper surface opening 11 of each main body block 6 is closed by a cover plate 21 placed on each of the front, rear, left and right horizontal beams 10. The respective components are fixed to each other so that the proper assembled state is maintained.

[0011]

The required number of main body blocks 6 corresponding to the site area are arranged in front, rear, left and right with the respective side surface openings 14 communicating with each other, and the side surface opening 2 of the main body block 6 group is the side surface opening. It is composed of a set of parts 14. Each side surface opening 2 is closed by the peripheral block 16, the top plate opening 11 of the main body block 6 is closed by the cover plate 21, and the four corners are closed by the corner blocks 26 to store the water storage space 5.
Is formed.

The bottom plate 7 of the main body block 6 is deformed in a direction in which the area is reduced in order to correspond to the deformed site,
When one or three original columns 8 are omitted, in order to secure the strength against the top load of the body block 6, the space between the bottom plate 7 and the top plate 12 or between the bottom plate 7 and the horizontal beam 10 is required. In between, it is necessary to insert and fix the reinforcing column 34 that supports the load.

In this case, for example, the lower portion 6b of the main body block 6 is first installed at a predetermined position, and then the reinforcing column 34 is fixed to an appropriate position of the bottom plate portion 7 of the lower portion 6b, After that, the upper portion 6a of the main body block 6 is hung, and the upper portion 6a is fixed to the reinforcing column 34.

Peripheral block 16 and corner block 26 are formed by being deformed in a direction in which the area is smaller than the standard type.
Similarly, the reinforcement columns are inserted and fixed in the same manner, and a required number of reinforcement columns 34 are attached between the upper and lower inner wall surfaces of the water storage space 5.

Rainwater flows into and is stored in the water storage space 5 from an injection pipe communicating with a water inlet on the surface of the earth. Rainwater is pumped up at an appropriate stage after rainfall, and is sequentially discharged to rivers through drainage pipes. As a result, the flow rate of the river is adjusted, and the flood of the river due to the inflow of a large amount of rainwater at one time is prevented.

[0016]

In one embodiment of the present invention shown in FIGS. 1 to 7, pillars 8 are connected at right angles to the front, rear, left and right four corners of a bottom plate 7, and between the upper ends 9 and 9 of each pillar 8. A block 6 for a main body made of reinforced concrete is used, in which horizontal beams 10 are continuously arranged at right angles, and an upper surface opening 11 is provided between the horizontal beams 10 on the front, rear, left and right. The body block 6 is divided into an upper portion 6a and a lower portion 6b near the midpoint of the height of the pillar 8 and is molded. The upper portion 6a has a convex portion 13 parallel to the horizontal beam 10 on the outer surface of one or both of the left and right horizontal beams 10.
Is provided. Reinforcing haunches 15 are provided on the lower portions of the inner side surfaces of the front, rear, left and right horizontal beams 10.

The blocks 6 for the main body portion are arranged so as to be in contact with each other in the front-rear direction, and are separated from each other in the left-right direction. On the outer peripheral portion of the main body block 6 group, a main body block in which a convex portion 13 is provided on only one of the left and right horizontal beams 10 is arranged, and inside thereof, the convex portion 13 is formed on both the left and right horizontal beams 10. The block for the main body is provided. The peripheral block 16 made of reinforced concrete is
Near the midpoint of the height of the side plate portion 25, it is divided into an upper portion 16a and a lower portion 16a and molded.

Blocks 6a, 6a for the main body, which are spaced apart from each other
The bottom open portion 3 between them is closed by an intermediate bottom plate 19 made of reinforced concrete which is precast or cast on site. The upper surface open part 4 between the main body blocks 6a, 6a which are installed apart from each other is closed by an intermediate cover plate 20 formed of reinforced concrete, and the intermediate cover plate 20 is placed on the convex parts 13, 13. The side surface opening portion 2 of the main body block group formed in this way and the intermediate bottom plate 19 and intermediate lid plate 2 in the peripheral portion
The open portion between 0s is closed by the peripheral block 16 provided in a row.

Corner blocks 26 made of reinforced concrete are inserted into the four corners which cannot be closed by the peripheral block 16. The corner block 26 is formed by being divided into an upper portion 26a and a lower portion 26b near the midpoint of the heights of the side plate portions 28, 29. The upper surface opening 11 of each body block 6 is a cover plate 2 made of reinforced concrete.
Blocked by 1. The lid plate 21 is installed by simply mounting the front, rear, left and right ends on the front, rear, left and right horizontal beams 10 of the main body block 6. Normally, the lid plate 21
Is stably held in the initial set position by its own weight, but if necessary, the cover plate 21 is attached to the main body block 6
It can also be fixed positively.

For example, a tightening bolt is screwed into the nut type insert embedded in the body block 6 from the through hole of the cover plate 21, or a stud bolt embedded in the body block 6 and inserted into the through hole of the cover plate 21. For the cover plate 21 and the main body part, screw a tightening nut into the cover plate, or screw a tightening bolt into the nut type insert embedded in the cover plate 21 and the main body block 6 from the through holes at each end of the communication plate. The lid plate 21 can be tightened and fixed to the main body block 6 by inserting the stud bolts embedded in the block 6 into the through holes at the respective ends of the connecting plate and screwing the tightening nuts. The same applies to the intermediate lid plate 20 and the intermediate bottom plate 19. Lid plate 21
Alternatively, the end faces may be brought into contact with each other and spread over the main body block 6 group.

One or both side surface opening portions 2 in the front-rear direction of the rainwater storage tank 1 and one or both side surface opening portions 2 in the left-right direction are the peripheral block 16 and the corner block 2 respectively.
Instead of using 6, it may be closed with one or more reinforced concrete precast wallboards 31 or cast-in-place wallboards 32 as shown in FIG. However,
Left and right side openings 2 on both front and rear sides of the rainwater storage tank 1
Facing both side openings 2 at the same time, that is, the rainwater storage tank
Pre-casing all four side open parts 2 on the front, back, left and right
To block with the wall plate 31 or the wall plate 32 cast on site,
In the peripheral block 16 and the corner block 26 of the present invention,
Do not do so because it will not be able to obtain the reinforcing effect. When closing the both side opening parts 2 with the site cast wall plate 32, the form member used at the time of placing one of the wall plates 32 is the block 6 for the main body part to which the cover plate 21 is not yet attached. It can be carried out from the upper surface opening 11 of the.

Main body block 6 and main body block 6
Between the main body block 6 and the peripheral block 16, between the peripheral block 16 and the peripheral block 16, between the peripheral block 16 and the corner block 26, the precast wall plate 31 and the main body block. Precast wallboard 3 between 6
1 between the block 16 for the peripheral part, between the cover plate 21 and the block 6 for the main body part, between the intermediate cover plate 20 and the block 6 for the main body part, between the intermediate cover plate 20 and the block 16 for the peripheral part, the intermediate bottom plate 19 and the main body part. Between the block 6 for parts, between the intermediate bottom plate 19 and the block 16 for the peripheral part, between the upper part 6a and the lower part 6b of the block 6 for the main body part, between the upper part 16a and the lower part 16b of the block 16 for the peripheral part, the corners. Upper part 26a of the block 26 for parts
Between the lower part 26b and the lower part 26b, etc., if necessary, a suitable waterproofing treatment is performed by loading a packing member or a regular sealing member or a caulking material.

Also, between the body block 6 and the body block 6, between the body block 6 and the peripheral block 16
Between the corner block 26 and the peripheral block 16, the main body block 6 and the precast wall plate 31, between the peripheral block 16 and the precast wall plate 31, the upper portion 6a and the lower portion of the main body block 6 6b, between the upper portion 16a and the lower portion 16b of the peripheral block 16, and between the upper portion 26a and the lower portion 26b of the corner block 26, etc., may be fixed as necessary. A nut type embedded in one inserts a tightening bolt into the insert through the other through-hole, or a stud bolt embedded in one and inserted through the other through-hole with a tightening nut. Insert the tightening bolts into the insert from the through holes at each end of the communication plate, or insert the stud bolts embedded in both sides into the through holes at each end of the communication plate and screw in the tightening nuts. Or it can be done by, for example fixed to the ends of both the fixing members each end of the PC steel material is inserted into both holes.

The block 6 for the main body made of reinforced concrete used in the embodiment shown in FIGS. 8 to 10 has upper ends 9 of pillars 8, 8 which are connected to the four corners of the bottom plate 7 in the front, rear, left and right at right angles. Horizontal beams 10 are connected to each other at a right angle between 9 and upper surface plates 12 are connected to the upper sides of the front, rear, left and right horizontal beams 10, respectively, and the upper portion 6a and the lower portion are located near the midpoint of the height of the pillar 8. It is divided into parts 6b and molded. Others are the same as the above-mentioned embodiment, the side surface opening portion 2 of the main body block group arranged side by side in the front, rear, left and right is closed by the peripheral block 16.
Blocks 26 for corners are arranged at the four corners. As described above, in the main body block 6 having the upper surface plate portion 12, the mounting position of the reinforcing column 34 can be widely selected.

The main body block 6 used in the embodiment shown in FIGS. 11 to 13 has the main body block 6 shown in FIG. 4 and FIG. The other configurations and installation forms are the same as those in the above embodiment.

The main body block 6 used in the embodiment shown in FIGS. 14 to 16 is the main body block 6 shown in FIG. 9 and FIG.
Is omitted, and other configurations and installation forms are the same as those in the above-mentioned embodiment.

FIG. 17 shows a case where a polygonal rainwater storage tank 22 is laid on a deformed land other than a square or a rectangle. When constructing such a rainwater storage tank 22, the main body block 6 used in the above-described embodiment is used as it is for the main body portion that is distant from the outline of the transformation site. Further, the peripheral block 16 used in the above-described embodiment is used as it is for the portion adjacent to the contour line parallel to the arrangement reference line of the main body block.

On the other hand, as for the portion adjacent to the contour line that is inclined with respect to the arrangement reference line of the main body block, the side surface plates of the top plate portion 17 and the bottom plate portion 18 correspond to the planar shape of the site. Peripheral block 16 in which the projecting length from part 25 and the planar shape are changed and main part block 24 in which the planar shape of bottom plate 7 is also changed are used.
The peripheral block and the main body block thus deformed are molded by inserting a partition plate into an appropriate position of the same molding frame when molding the block.
According to this deformation mode and size, the deformation block is shown in FIG.
As shown in FIG. 8 to FIG. 20, the required number of reinforcing columns 34 are inserted and fixed. As shown in FIG. 21, the peripheral block 16 having no sleeve wall may be partially used.

As a method of placing the lid plate 21 on the horizontal beam 10 of the main body block 6, the lid plate 2 is placed as shown in the figure.
In addition to the so-called top cover method in which the total thickness of 1 is above the upper surface of the horizontal beam 10, a step portion having a depth equal to the thickness of the cover plate 21 is provided on the horizontal beam 10 so that the upper surface of the cover plate 21 is It is also possible to employ a so-called drop lid method in which the horizontal beam 10 is placed on the same horizontal surface as the upper surface.

[0030]

As described above, in the rainwater storage tank of the present invention, the horizontal beam 10 is provided between the upper ends 9 and 9 of the columns 8 provided at the four corners of the bottom plate 7 in the front, rear, left, and right directions. Each horizontal beam 1
The block 6 for the main body part having the upper surface opening 11 left between 0 and 10, and the sleeve wall parts 23, 23 for connecting the ends of the upper surface plate part 17 and the bottom surface plate part 18 to both side edges of the side surface plate part 25. Block 16 for the peripheral part, which is connected in series, and two side plate parts 2 orthogonal to each other
8 and 29, and a corner block 26 in which a top plate portion 30 and a bottom plate portion 27 are connected to each other at a right angle, and the side surface open portion 2 of the main body block group is closed by the peripheral block 16 to form four corners. Is closed by a corner block 26, and a top plate opening 11 of the main body block 6 is closed by a cover plate 21 placed on each horizontal beam 10. While the horizontal beam 10 and the cover plate 21 support the top load,
Since the sleeve wall portion 13 of the peripheral block 16 serves as a reinforcing means against lateral pressure, it is possible to accurately construct a rainwater storage layer having high structural strength.

[0031] Another rainwater storage tank of the present invention, the horizontal beams 10 provided between the upper end portion 9, 9 of the pillar 8, 8 provided between the front and rear left and right corners of the bottom plate portion 7 and the upper plate portion 12, the front and rear The main body block 6 includes a main body block 6 in which an upper surface plate 12 is continuously provided above the left and right horizontal beams 10, a peripheral block 16 and a corner block 26. Reference numeral 6 supports front and rear, left and right columns 8 and the upper plate portion 12 to support the top load, and front, rear, left and right horizontal beams 10 provided between the upper ends of the columns 8 serve as reinforcing means for the upper plate portion 12. So
It is possible to reduce the thickness of the upper surface plate portion 12 as a slab member, so that the weight of the main body block 6 alone is reduced, the workability at the time of transportation and installation is improved, and the material is saved, resulting in cost reduction. Is reduced.

Further, the top plate portion 1 of the peripheral block 16
Since there are no intermediate columns or corner columns between the bottom plate portion 7 and the bottom plate portion 18 except for the sleeve wall portion 23 connected to the side plate portion 25, the same molding is performed when molding the peripheral block 16. By inserting a partition plate in the proper place of the formwork, the top plate part 17 and the bottom plate part 1 can be arranged according to the outline of the outer peripheral part of the site.
It is possible to appropriately adjust the protruding length and the planar shape of the side plate portion 8 from the side surface plate portion 25, and thus it is possible to appropriately cope with various deformed lands. Since it is not necessary to prepare many molds of various types according to the shape of the outer peripheral portion of the site, the equipment cost of the molds can be reduced. Further, since there are no pillars, the overall weight of the peripheral block 16 is light, and the workability during transportation and installation is good.

In the present invention, the body block 6 is divided into two parts, that is, an upper part 6a and a lower part 6b, and the upper part 6a and the lower part 6b are relatively displaceable in an unconnected state. Therefore, in order to correspond to the modified site, the planar shape of the bottom plate portion 7 or the bottom plate portion 7 and the top plate portion 12 is deformed from the standard shape in the direction in which the area is reduced, and the original pillar 8 is eliminated. When omitted, the reinforcing columns 3 to be added between the remaining bottom plate portion 7 and the top plate portion 12 or between the bottom plate portion 7 and the horizontal beam 10.
Insertion and fixing of No. 4 are properly performed in an appropriate posture without the reinforcing columns 34 tilting obliquely. Since the peripheral block 16 and the corner block 26 are also formed by being divided into upper and lower parts,
Similarly, when the reinforcing column 34 is needed, its insertion and fixing can be easily performed.

[Brief description of drawings]

FIG. 1 is a plan view of a rainwater storage tank according to an embodiment of the present invention.

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

FIG. 3 is a sectional view taken along line BB of FIG. 1;

4 is a perspective view of a main body block used in the rainwater storage tank of FIG. 1. FIG.

5 is a perspective view of another main body block used in the rainwater storage tank of FIG. 1. FIG.

FIG. 6 is a perspective view of a peripheral block used in the rainwater storage tank of FIG. 1.

7 is a perspective view of a corner block used in the rainwater storage tank of FIG. 1. FIG.

FIG. 8 is a sectional view corresponding to FIG. 2 in another embodiment of the present invention.

9 is a perspective view of a main body block used in the rainwater storage tank of FIG.

FIG. 10 is a perspective view of another main body block used in the rainwater storage tank of FIG.

FIG. 11 is a sectional view corresponding to FIG. 2 in still another embodiment of the present invention.

12 is a perspective view of a main body block used in the rainwater storage tank of FIG. 11. FIG.

FIG. 13 is a perspective view of another main body block used in the rainwater storage tank of FIG. 11.

FIG. 14 is a sectional view corresponding to FIG. 2 in another embodiment of the present invention.

FIG. 15 is a perspective view of a main body block used in the rainwater storage tank of FIG.

16 is a perspective view of another main body block used in the rainwater storage tank of FIG. 14. FIG.

FIG. 17 is a plan view of a rainwater storage tank according to still another embodiment of the present invention when the rainwater storage tank is laid on a modified land.

FIG. 18 is a perspective view of a modified main body block used in the rainwater storage tank of FIG. 17 in an exploded state.

FIG. 19 is a perspective view of a peripheral block used in the rainwater storage tank of FIG. 17 in an exploded state.

20 is a perspective view of a peripheral block used in the rainwater storage tank of FIG. 17 in an exploded state.

FIG. 21 is a perspective view of a peripheral block in which a sleeve wall is omitted.

FIG. 22 is a plan view of a rainwater storage tank according to another embodiment of the present invention.

[Explanation of Codes] 1 Rainwater Storage Tank 2 Side Opening Part 3 Bottom Opening Part 4 Top Opening Part 5 Internal Space 6 Main Body Block 6a Upper Part of Main Body Block 6b Lower Part of Main Body Block 7 Bottom Plate Part 8 columns 9 upper ends of columns 10 horizontal beams 11 openings between horizontal beams 12 top plate part 13 convex parts 14 side face openings 15 haunches 16 blocks for peripheral parts 16a upper parts of blocks for peripheral parts 16b under blocks for main variable parts Side part 17 Block top plate part for peripheral part 18 Block bottom plate part for peripheral part 19 Intermediate bottom plate 20 Intermediate cover plate 21 Cover plate 22 Rainwater storage tank 23 Sleeve wall part 24 Deformation main body block 25 Side plate for peripheral part block Part 26 Corner block 26a Corner block upper part 26b Corner block lower part 27 Corner block bottom plate part 28 Corner block The end face opening 34 reinforcing pillars of the upper plate portion 31 precast wall panel 32 site droplet 設壁 plate 33 periphery block of side plate portion 30 corner block of the side plate portion 29 corner block of click

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Bibliography Sho 62-66977 (JP, U) Rikai Hei 3-97094 (JP, U) Rikai 63-198676 (JP, U) Rikai Hei 2- 101853 (JP, U) Actual public 4-4063 (JP, Y2) Actual public 2-34306 (JP, Y2) Actual public Sho 62-15343 (JP, Y2)

Claims (12)

[Claims] 1. A horizontal beam 10 is installed at a right angle between upper ends 9, 9 of columns 8, 8 which are continuously installed at four corners on the front, rear, left, and right of a bottom plate portion 7, and each horizontal beam 10, front, back, left, and right, An upper surface opening 11 is formed between 10 and a main body block 6 which is formed by dividing the pillar 8 into an upper portion 6a and a lower portion 6b;
The upper surface plate portion 17 is connected to the upper end portion of one side surface plate portion 25 at a right angle, the bottom surface plate portion 18 is connected to the lower end portion of the side surface plate portion 25 at a right angle, and both side edge portions of the side surface plate portion 25 are connected. The sleeve wall portions 23, 23 connecting the ends of the top plate portion 17 and the bottom plate portion 18 are connected to each other at a right angle, and in the middle of the side plate portion 25, the upper portion 16a is formed.
And a peripheral portion block 16 having a U-shaped vertical cross section, which is formed by being divided into a lower portion 16b and two side plate portions 28 and 29, which are connected to each other at a right angle, and are provided at the lower end portions of the side plate portions 28 and 29. The bottom surface plate portion 27 is connected at a right angle, and the upper surface plate portion 30 is connected at a right angle to the upper end portions of the side surface plate portions 28 and 29.
In the middle of 29, it is composed of an upper part 26a and a lower part 26b, and is formed by dividing into a corner block 26. 2 is closed by a row of peripheral block 16 and a space between the end of the row of peripheral block 16 in the front-rear direction and the end of the row of peripheral block 16 in the left-right direction is formed as a corner block 26. Each of the upper openings 11 of the main body block 6 is closed by a lid plate 21 placed on each of the front, rear, left and right horizontal beams 10.
A rainwater storage tank in which each component is fixed to each other. 2. A horizontal beam 10 is installed at a right angle between upper ends 9, 9 of pillars 8, 8 which are continuously installed at right and left four corners of a bottom plate portion 7, and the horizontal beams 10 of the front, back, left and right are connected. Upper surface plate 12 on the upper side
And the main body block 6 formed by dividing the pillar 8 into an upper portion 6a and a lower portion 6b in the middle of the pillar 8; and an upper plate 17 at a right angle to the upper end of one side plate 25. The bottom plate 18 is connected to the lower end of the side plate 25 at a right angle, and the upper and lower plates 17 and 18 are connected to each other at both side edges of the side plate 25. And the peripheral wall block 16 having a U-shaped vertical cross-section, which is formed by dividing the sleeve wall portions 23, 23 connected to each other at a right angle and dividing the side wall portion 25 into an upper portion 16a and a lower portion 16b; Two side plate portions 28, 29 are connected at right angles, a bottom plate portion 27 is connected at a lower end portion of the side plate portions 28, 29 at a right angle, and an upper surface plate is formed at an upper end portion of the side plate portions 28, 29. The parts 30 are connected at right angles, and the side plate parts 28, 2
In the middle of 9, a corner block 26 formed by being divided into an upper portion 26a and a lower portion 26b is formed. 2 is closed by a row of peripheral block 16 and a space between the end of the row of peripheral block 16 in the front-rear direction and the end of the row of peripheral block 16 in the left-right direction is formed as a corner block 26. A rainwater storage tank that is blocked by and fixed each component to each other. 3. A side opening part in the front-rear direction is formed by closing both side opening parts 2 in the left-right direction of a group of blocks 6 for the main body part arranged side by side in the front-rear left-right direction with block 16 for peripheral parts arranged in a row. The end face opening portion 33 of the peripheral block 16 at one end of the rows 2 and 2 and the end of the row is closed by the precast wall plate 31 or the cast-in-place wall plate 32, and the end of the row of the peripheral block 16 in the front-rear direction and the left and right sides are closed. The rainwater storage tank according to claim 1, wherein a space between the ends of the row of peripheral block 16 in the direction is closed by a corner block 26. 4. A horizontal beam 10 is installed at a right angle between upper ends 9, 9 of columns 8, 8 which are installed at right and left four corners of a bottom plate portion 7, and the horizontal beams 10 are provided at the front, back, left and right. An upper surface opening 11 is formed between 10 and a main body block 6 which is formed by dividing the pillar 8 into an upper portion 6a and a lower portion 6b;
The upper surface plate portion 17 is connected to the upper end portion of one side surface plate portion 25 at a right angle, the bottom surface plate portion 18 is connected to the lower end portion of the side surface plate portion 25 at a right angle, and both side edge portions of the side surface plate portion 25 are connected. The sleeve wall portions 23, 23 connecting the ends of the top plate portion 17 and the bottom plate portion 18 are connected to each other at a right angle, and in the middle of the side plate portion 25, the upper portion 16a is formed.
And a lateral side open portion 2, 2 of the main body block 6 group, which is composed of a peripheral portion block 16 having a U-shaped vertical cross-section formed by being divided into a lower portion 16b. Both of them are closed by the peripheral block 16 provided in a row, and both the front and rear side surface open portions 2 and 2 and the end face open portion 33 of the peripheral block 16 at the end of the row are cast on the precast wall plate 31 or on site. A rainwater storage tank which is closed by a wall plate 32, and each upper opening 11 of the main body block 6 is closed by a cover plate 21 placed on each of the front, rear, left and right horizontal beams 10 and each component is fixed to each other. 5. A lateral side opening part in the left-right direction is closed by blocking both lateral side opening parts 2, 2 in the front-back direction of a group of main body block blocks 6 arranged side by side in the front-rear left-right direction. The end face opening portion 33 of the peripheral block 16 at one end of the rows 2 and 2 and the end of the row is closed by the precast wall plate 31 or the cast-in-place wall plate 32, and the end of the row of the peripheral block 16 in the front-rear direction and the left and right sides are closed. The rainwater storage tank according to claim 1, wherein a space between the ends of the row of peripheral block 16 in the direction is closed by a corner block 26. 6. A horizontal beam 10 is installed at a right angle between upper ends 9, 9 of columns 8, 8 which are installed at right and left four corners of a bottom plate 7, and the horizontal beams 10 are provided at the front, back, left and right. An upper surface opening 11 is formed between 10 and a main body block 6 which is formed by dividing the pillar 8 into an upper portion 6a and a lower portion 6b;
The upper surface plate portion 17 is connected to the upper end portion of one side surface plate portion 25 at a right angle, the bottom surface plate portion 18 is connected to the lower end portion of the side surface plate portion 25 at a right angle, and both side edge portions of the side surface plate portion 25 are connected. The sleeve wall portions 23, 23 connecting the ends of the top plate portion 17 and the bottom plate portion 18 are connected to each other at a right angle, and in the middle of the side plate portion 25, the upper portion 16a is formed.
And a side open portion 2 in the front-rear direction of a group of blocks 6 for the main body, which are formed side by side in the front-rear and left-right directions. Both of them are closed by the peripheral block 16 arranged in a row, and both of the lateral side opening parts 2 and 2 in the left-right direction and the end face opening part 33 of the peripheral block 16 at the end of the row are cast on the precast wall plate 31 or on site. A rainwater storage tank which is closed by a wall plate 32, and each upper opening 11 of the main body block 6 is closed by a cover plate 21 placed on each of the front, rear, left and right horizontal beams 10 and each component is fixed to each other. 7. A side opening part in the front-rear direction is formed by closing both lateral opening parts 2 in the left-right direction of a group of blocks 6 for the body part arranged side by side in the front-rear left-right direction by a block 16 for peripheral parts arranged in a row. The end face opening portion 33 of the peripheral block 16 at one end of the rows 2 and 2 and the end of the row is closed by the precast wall plate 31 or the cast-in-place wall plate 32, and the end of the row of the peripheral block 16 in the front-rear direction and the left and right sides are closed. The rainwater storage tank according to claim 2, wherein a space between the ends of the row of peripheral portion blocks 16 in the direction is closed by a corner portion block 26. 8. A horizontal beam 10 is installed at a right angle between upper ends 9, 9 of pillars 8, 8 which are connected at right angles to the front, rear, left and right four corners of a bottom plate portion 7, and the horizontal beams 10 of the front, rear, left and right are connected. Upper surface plate 12 on the upper side
And the main body block 6 formed by dividing the pillar 8 into an upper portion 6a and a lower portion 6b in the middle of the pillar 8; and an upper plate 17 at a right angle to the upper end of one side plate 25. The bottom plate 18 is connected to the lower end of the side plate 25 at a right angle, and the upper and lower plates 17 and 18 are connected to each other at both side edges of the side plate 25. The sleeve wall portions 23, 23 are connected to each other at a right angle, and in the middle of the side plate portion 25, a peripheral portion block 16 having a vertical U-shaped cross section is formed by being divided into an upper portion 16a and a lower portion 16b. The left and right side surface opening portions 2 of the main body block 6 group that are arranged side by side in the front-rear and left-right directions.
Both of them are closed by a peripheral block 16 provided in a row, and both of the front and rear side surface open portions 2 and 2 and the end face open portion 33 of the peripheral block 16 at the end of the row are connected to the precast wall plate 31.
Alternatively, it is a rainwater storage tank in which each component is fixed to each other by being blocked by the wall-casting wall plate 32. 9. A side opening part in the left-right direction is closed by blocking both side-opening parts 2 in the front-rear direction of a group of blocks 6 for body part arranged side by side in the front-rear and left-right directions by a block 16 for peripheral parts arranged in a row. The end face opening portion 33 of the peripheral block 16 at one end of the rows 2 and 2 and the end of the row is closed by the precast wall plate 31 or the cast-in-place wall plate 32, and the end of the row of the peripheral block 16 in the front-rear direction and the left and right sides are closed. The rainwater storage tank according to claim 2, wherein a space between the ends of the row of peripheral portion blocks 16 in the direction is closed by a corner portion block 26. 10. A horizontal beam 10 is vertically connected between upper ends 9, 9 of columns 8, 8 which are continuously connected at four corners on the front, rear, left, and right of a bottom plate portion 7, and the horizontal beams 10 of the front, rear, left, and right are connected. Top plate 1 on top
2 are provided in series, and the main body block 6 is formed by being divided into an upper portion 6a and a lower portion 6b in the middle of the pillar 8; and an upper surface plate portion 17 at the upper end portion of one side surface plate portion 25. The bottom surface plate portion 18 is connected to the lower end portion of the side surface plate portion 25 at a right angle, and the end portions of the top surface plate portion 17 and the bottom surface plate portion 18 are connected to both side edges of the side surface plate portion 25. The connecting sleeve wall portions 23, 23 are connected to each other at a right angle, and in the middle of the side surface plate portion 25, a peripheral portion block 16 having a vertical cross-section formed by being divided into an upper portion 16a and a lower portion 16b. And the side surface opening portions 2 in the front-rear direction of the main body block 6 group arranged in the front-rear left-right direction
Both of them are closed by a peripheral block 16 provided in a row, and both of the lateral side opening parts 2 and 2 in the left-right direction and the end face opening part 33 of the peripheral block 16 at the end of the row are connected to the precast wall plate 31.
Alternatively, a rainwater storage tank blocked by the wall-mounted wallboard 32. 11. A peripheral part block 16 in which the projecting lengths of the top plate part 17 and the bottom plate part 18 from the side plate part 25 and the plane shape are changed in accordance with the plan shape of the site is used.
The rainwater storage tank according to claim 1 . 12. The peripheral block 16 in which the projecting length and the plane shape of the top plate portion 17 and the bottom plate portion 18 from the side surface plate portion 25 are changed in accordance with the plane shape of the site, and the plane shape of the site. Claim 1 to Claim 1 which uses the block 6 for main parts which changed the plane shape of bottom plate part 7 correspondingly.
Item 10. The rainwater storage tank according to item 10 .