JPH08276986A - Unit board for prefabrication-type tank and the prefabrication-type tank - Google Patents

Abstract

PURPOSE: To suppress deflection of a unit board constituting a bottom and a side wall by pressure of liquid reserved inside a prefabrication-type tank and also to improve sealability between the unit boards. CONSTITUTION: A unit board 15 constituting a bottom 11 of a prefabrication-type tank 1 includes a rectangular base plate, joint pieces 15b vertically folded from respective side rims along a lengthwise direction of the base plate and reinforcing pieces 15c folded from a tip of each joint piece 15b in a direction where they come close and in parallel to the base plate. A unit board 16 constituting a side wall 12 also includes a rectangular base plate, joint pieces 16b vertically folded from respective side rims along a lengthwise direction of the base plate and reinforcing pieces 16c folded from a tip of each joint piece 16b in a direction where they come close and in parallel to the base plate. Each reinforcing piece 15c, 16c suppresses deflection of the unit boards 15, 16 folding in a lengthwise direction and also improves sealability between the unit boards.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a unit plate which constitutes one surface of a prefabricated tank and a prefabricated tank using the unit plate.

[0002]

2. Description of the Related Art It has already been done to assemble a tank for storing a liquid with a shallow rectangular unit plate having a quadrangular right-angled shape. As the unit plate, a unit in which a joining piece perpendicular to the substrate is provided on the four circumferences of a right-angled quadrilateral substrate is used, and by joining the joining pieces of the adjacent unit plates to each other, The side wall is assembled.

The unit plates constituting the bottom surface and the side wall of the prefabricated tank tend to bend so as to project to the outside of the tank due to the pressure of the liquid stored inside. Moreover, because the amount of liquid stored in the tank fluctuates, a load is repeatedly applied to each unit plate, and if the unit plate does not have sufficient strength to withstand this, the unit plate may bend. It will be damaged.

In order to deal with such a problem, for example, Japanese Utility Model Laid-Open No. 60-101495 and Japanese Utility Model Laid-Open No. 59-4.
In Japanese Patent No. 6895 and Japanese Utility Model Publication No. 52-7849, when an elongated body or an angle is arranged along a joint piece of each unit plate constituting a side wall, and joint pieces of adjacent unit plates are joined by bolts. Discloses a structure in which the elongated body or the angle is also bolted together. Further, in Japanese Patent Publication No. 56-12552, a supplementary piece arranged along the joining piece of each unit plate constituting the bottom surface is
A structure is disclosed in which bolting is performed together with the joining piece.

In this way, by reinforcing the joining piece of each unit plate with the elongated body, the angle, the additional piece, etc.,
The strength of the joining piece of each unit plate and the substrate is improved, and the unit plate is suppressed from bending outward of the tank.

Further, in Japanese Utility Model Publication No. 62-11813, as shown in FIGS. 12 (a) and 12 (b), a beam member 6 is formed on a plurality of concrete foundations 61 extending linearly in parallel.
There is disclosed an example in which a gantry 6 configured in a grid shape by 2 is arranged, and the assembling tank 1 is installed on the gantry 6, and each unit plate 63 constituting the bottom surface of the assembling tank 1 is disclosed. All of the four downward facing connecting pieces 63 a are supported by the gantry 6. Further, in Japanese Utility Model Publication No. 62-11813 mentioned above, as shown in FIG. 12 (c), a linear beam member 6 is provided on a plurality of concrete foundations 61 extending linearly in parallel.
An example in which the assembly type tank 1 is installed on the beam member 62 by disposing each of the two, and four downward facing joining pieces 6 of each unit plate 63 constituting the bottom surface of the assembly type tank 1 are disclosed.
Two pieces of 3a are supported by the beam member 62.

[0007]

In the above-described structure in which the joining piece of the unit plate is reinforced by the elongated body or the like, it is necessary to prepare the elongated body or the like separately from the unit plate, and moreover, the joining piece. At the same time, the long body and the like had to be bolted, which made the assembly work complicated. In addition, normally, a water blocking packing must be interposed between the joining pieces of the adjacent unit plates, and with the packing sandwiched between the unit plates, a long body and the like can be bolted. Therefore, especially careful work was required.

Further, when the packing is interposed between the joining pieces and the joining pieces are bolted together, the joining pieces around the bolt are tightly tightened and the joining pieces are in a wavy state. In particular, when bolting is performed in a state where the long body or the like is provided along only one of the joint pieces, the wavy state of the joint piece in which the long body or the like does not appear remarkably appears. When the joining pieces become wavy, water may leak from the portion between the bolts where the joining pieces are not in strong contact with each other. In order to prevent such water leakage, it is necessary to use a large number of bolts by narrowing the intervals between the bolts that join the joining pieces together. However, the use of a large number of bolts causes a problem that the bolt tightening work is troublesome and the economical efficiency is deteriorated.

Further, as shown in FIGS. 12 (a) and 12 (b), all four downward facing connecting pieces 63a of each unit plate 63 constituting the bottom surface of the prefabricated tank 1 are connected by a grid-shaped mount 6. When supporting, many beam members 62 are required to make the pedestal 6 in a grid shape, the weight of the pedestal 6 increases, and the joint portion on the upper surface of the grid-shaped pedestal 6 is made smooth. Work is needed. Further, when bolting the joining piece of each unit plate constituting the bottom surface of the prefabricated tank 1, it is necessary to work under the pedestal 6, but at this time, it is mounted on the grid-shaped pedestal 6. In addition, it is extremely difficult to bolt the corners of the joining piece 63a of each unit plate.

Further, as shown in FIG. 12 (c), of the four downwardly facing joining pieces 63a of each unit plate 63 constituting the bottom surface of the prefabricated tank 1, two facing pieces are made into linear beam members 6.
In the case of supporting by means of 2, the use amount of the beam member 62 is reduced and the weight is also reduced, and the bolting work at the corners of each unit plate becomes relatively easy, but the strength of the joining piece of the unit plate is not sufficient. When it is sufficient, it is not possible to set a large gap between the beam members 62, and normally, the gap between the adjacent beam members 62 is set to about 1 to 1.2 m according to the length of one piece of the unit plate. There is. That is, it is considered that the concrete foundation 61 and the beam member 62 are still used in a large amount and the weight thereof is large.

The lid of the assembled tank is also usually assembled by bolting the unit plates together. An example of such a method of supporting the lid of the prefabricated tank is Jpn.
It is disclosed in Japanese Patent No. 38006. In the case of this example, of the four downward-facing joining pieces of each lid unit plate constituting the lid part, two facing pieces are supported by a plurality of linear beam members installed in the upper part of the tank. It is configured.
At this time, it is not possible to increase the interval between the beam members in consideration of a person riding on the top of the tank lid or a snow load. Therefore, the length of one piece of each unit plate is made small, and the interval between the beam members is set small. That is, a large number of beam members are spread over the inside of the tank, which makes the assembling work of the beam members complicated and impairs the economical efficiency.

Note that it is necessary to consider that the lid unit plate does not float up due to strong wind. It is also necessary to consider that the lid unit plate will not be pushed up and damaged due to the sloshing phenomenon during an earthquake.

The present invention is intended to solve such a problem, and its object is to provide a bottom surface, a side wall, and a lid which have high strength and which are not likely to be damaged by the pressure of the liquid or the like stored in the tank. It is to provide a unit plate of a prefabricated tank that constitutes the above. Another object of the present invention is to provide a prefabricated tank having high strength constituted by its unit plate.

[0014]

DISCLOSURE OF THE INVENTION The present invention is a unit plate for an assembly type tank in which one surface of the tank is formed by joining a plurality of sheets to each other. The joint pieces integrally provided with the substrate so that they respectively extend perpendicularly to the substrate from the side edges along the direction, and the joint pieces extending in directions approaching each other from the leading edge of each joint piece. And a reinforcing piece integrally provided with each joining piece so as to be parallel to the substrate, thereby achieving the above object.

The prefabricated tank of the present invention is characterized in that the bottom surface and the side wall are formed by arranging such unit plates in the width direction and joining the joining pieces of adjacent unit plates. The above object is achieved thereby.

[0016]

According to the unit plate for an assembling tank of the present invention, the joining pieces provided on both side edges in the longitudinal direction of the substrate are reinforced by the reinforcing pieces integrally extending perpendicularly to the joining pieces. Since it is in the opened state, the rigidity of the substrate and each joining piece is significantly improved, and the bending of the central portion in the longitudinal direction is suppressed.

In the assembled tank according to the present invention, since the bottom surface and the side wall are constituted by the unit plate in which the respective joining pieces are reinforced by the respective reinforcing pieces as described above, the pressure of the liquid stored inside is The bending of each unit plate due to the above is suppressed, and there is no risk of being damaged by repeated load due to the fluctuation of the stored amount of the liquid, and the unit plate can be used stably for a long time.

[0018]

Embodiments of the present invention will now be described in detail with reference to the drawings.

FIG. 1 is a partially cutaway perspective view showing an example of the assembled tank 1 of the present invention. The prefabricated tank 1 is mounted on a pedestal 30 framed in a rectangular shape, and the pedestal 30 is provided on a plurality of linearly extending concrete foundations 20 standing upright in parallel with each other. There is. The frame 30 has a U-shaped frame (channel)
A beam member 32 framed in a rectangular shape by 31 and extending in a direction orthogonal to the concrete foundation 20
It is divided into equal parts.

Assembled tank 1 installed on the pedestal 30
Is formed in a rectangular parallelepiped shape by a bottom surface 11, a side wall 12 arranged vertically on the peripheral edge of the bottom surface 11, and a lid portion 13 arranged horizontally on the upper end of the side wall 12.
Inside the prefabricated tank 1, a partition wall 14 arranged vertically along the beam 32 is provided.

On the bottom surface 11, a plurality of long plate-shaped unit plates 15 are horizontally extended in the longitudinal direction between the frame members 31 and the beam members 32 orthogonal to the concrete foundation 20 with the joining pieces 15b facing downward. , Are arranged in the width direction. The side wall 12 is formed by joining a plurality of long plate-shaped unit plates 16 together.
It is configured by vertically standing on each frame member 31 with 6b facing outward and arranging in the width direction so as to surround the bottom surface 11. The lid portion 13 is configured by arranging a plurality of long plate-shaped unit plates 17 horizontally on the upper end portion of the side wall 12 in the width direction with the joining piece 17b facing downward.

2A and 2B show an example of the unit plate 15 constituting the bottom surface 11. FIG. 2A is a perspective view of the unit plate 15 from the back side (bottom side), and FIG. Is.
The unit plate 15 is formed of, for example, stainless steel, and has a rectangular flat substrate 15a and the substrate 1
The joining pieces 15b are bent so as to extend perpendicularly to the substrate 15a from the respective side edges along the longitudinal direction of the 5a, and further in a direction in which the joining pieces 15b approach each other from the tip edges of the joining pieces 15b. Substrate 1 bent vertically
It has a reinforcing piece 15c which is parallel to 5a.

At the edges of both short sides of the rectangular substrate 15a, there are respectively provided end faces 15d which are orthogonal to the substrate 15a and the respective bonding pieces 15b. Each end surface 15d is in a state of being separated from each reinforcing piece 15c, and is in a state of covering half of each joining piece 15b on the side of the substrate 15a. Therefore, an open portion 15e is formed between each reinforcing piece 15c and each end of the end surface 15d.

A plurality of bolt holes 15f are provided at equal intervals in the longitudinal direction of each joining piece 15b. Also, a plurality of bolt holes 15h are provided at equal intervals in the longitudinal direction of each end surface 15d. Also, the substrate 1
If necessary, a plurality of bolt holes 15g are provided at one end in the longitudinal direction of 5a at equal intervals. Furthermore, bolt holes 15k are also provided at each end of each reinforcing piece 15c, if necessary.

The unit plate 15 of this embodiment is, for example, the substrate 1
The length of 5a is 2000 mm, the width is 500 mm, the width (height) of each joining piece 15b is 130 mm, the width of each reinforcing piece 15c is 30 mm, and the width (height) of each end face is 70 mm.

A plurality of unit plates 15 having such a configuration are arranged in the width direction, and the joining sides 15b of adjacent unit plates 15 are joined to each other, whereby the bottom surface 11,
Although the side wall 12, the lid portion 13, the partition wall 14 and the like can be formed, in the present embodiment, the unit plate 15 constitutes the bottom surface 11 of the prefabricated tank 1.

The adjacent unit plates 15 are connected to each other by the joining pieces 15b.
The bolts are inserted into the respective bolt holes 15f provided in the above, and nuts are screwed into the respective bolts to join them. Each unit plate 15 constituting the bottom surface 11 is horizontally stretched in the longitudinal direction between the frame member 31 and the beam member 32 orthogonal to the concrete foundation 20 with the joining piece 15b facing downward. Bolt hole 1 provided in 15c
With the bolt and nut that inserts 5k, the frame member 31
And the beam member 32, respectively. In addition, the substrate 1 of each unit plate 15 corresponding to the position where the partition wall 14 is erected.
A plurality of bolt holes 15g are provided at each end of 5a.

When joining the joining pieces 15b of the adjacent unit plates 15, a packing (not shown) such as tape-like PVC (polyvinyl chloride) foam sponge or sealant is provided between the joining pieces 15b. Is intervened.

Opening portions 15e are provided at the four corners of each unit plate 15 formed in a rectangular shape, and the height of the end surface 15d is lower than the height of the joining piece 15b. Bolt holes 15f, 15 located at each corner
When the bolts are inserted through g, 15h, and 15k to perform the fastening work, the bolt tightening device can be used without difficulty. In particular, since it is difficult to insert a ratchet spanner and an electric bolt fastening machine into each corner of the lower surface of each unit plate 15 that constitutes the bottom surface 11 of the assembly-type tank 1, workability is poor, but there is this open portion 15e. This facilitates the bolting work for each corner of each unit plate 15.

3A and 3B show a unit plate 16 used for the side wall of the assembled tank of this embodiment. FIG. 3A is a perspective view of the outer surface of the unit plate 16, and FIG. 3B is the unit plate. 16 is a development view of FIG. This unit plate 16 is also formed of, for example, stainless steel, and has a rectangular flat substrate 16a.
A joining piece 16b bent so that each side edge portion along the longitudinal direction of the board 16a extends perpendicularly to the board 16a; It has a reinforcing piece 16c that is bent perpendicularly to the approaching direction and is parallel to the substrate 16a.

In order to facilitate the bolting work of each corner of the unit plate 16, the length of each reinforcing piece 16c in the longitudinal direction is made shorter than the length of the substrate 16a in the longitudinal direction.
Each edge 16t of each joining piece 16b and each edge 16s of each reinforcing piece 16c are formed in an arc shape starting from each corner of the substrate 16a.

Further, since nothing is provided at the edges along the width direction at the ends in the longitudinal direction of the substrate 16a, the edges 16s of the joining pieces 16c and the corners of the substrate 16a are not provided. The spaces are open portions 16e.

A plurality of bolt holes 16f are provided at equal intervals in the longitudinal direction of each joining piece 16b. Further, a plurality of bolt holes 16g are provided at both ends in the longitudinal direction of the substrate 16a at equal intervals. Further, a plurality of bolt holes 16m are provided at one side edge portion of the substrate 16a at equal intervals, if necessary.

Like the unit plate 15 shown in FIG. 2, the unit plate 16 of this embodiment has, for example, a substrate 16a having a length of 2000.
mm, the width is 500 mm, the width (height) of each joining piece 16b is 130 mm, and the width of each reinforcing piece 16c is 30 mm.

A plurality of such unit plates 16 are arranged in the width direction, and the joining pieces 16b of adjacent unit plates 16 are joined to each other to form the side wall 12 of the assembly-type tank 1. It Adjacent unit plates 16 are joined by inserting bolts into the bolt holes 16f provided in the joining pieces 16b and screwing nuts into the bolts.

The unit plates 16 constituting the side wall 12 are vertically erected on the frame members 31 of the pedestal 30 with the joining pieces 16b facing outward, and the adjacent unit plates 16 are joined by bolts and nuts. .

Further, the lower end portion of each unit plate 16 forming the side wall 12 has a joining piece 1 of each unit plate 15 forming the bottom face 11.
5b or the end surface 15d, respectively. Then, the bolt holes 16g provided at each end of the substrate 16a in each unit plate 16 and each unit plate 1 forming the bottom surface 11
The bolt holes 15f provided in the joint piece 15b of No. 5 or the bolt holes 15h provided in the end surface 15d are aligned and fastened with bolts and nuts.

In this case, each unit plate 1 forming the side wall 12
6, tape-shaped PVC between the adjacent joint pieces 16b and between the substrate 16a of each unit plate 16 forming the side wall 12 and the joint piece 15b or end face 15d of each unit plate 15 forming the bottom surface 11. A packing (not shown) such as (polyvinyl chloride) foam sponge and sealant is interposed.

Opening portions 16e are provided at the four corners of each rectangular unit plate 16, and the ends of the substrate 16a in the longitudinal direction are arranged along the width direction. Since nothing is provided on the edge, when bolts are inserted into the bolt holes 16f, 16g, 16m located at the respective corners for fastening work, a bolting device can be used without difficulty. Therefore, it is possible to easily perform the bolt tightening work for each corner portion of each unit plate 16.

The unit plate 18 constituting the partition wall 14 in the assembled tank 1 is also formed of, for example, stainless steel, and the unit of FIG. 2 constituting the bottom surface 11 is different except that the positions where the bolt holes are provided are different. It has the same structure as the plate 15. For example, as shown in FIG.
Bolt holes 18h are not provided in the substrate 18a, the reinforcing piece 18c, and the one end surface (upper side) 18d of the unit plate 18 constituting the. However, there is no problem even if the reinforcing piece 18c and the one end surface (upper side) 18d are provided with bolt holes.

End face 1 of each unit plate 18 constituting the partition wall 14
The bolt hole 18h provided in 8d is aligned with the bolt hole 15g provided at the end of each unit plate 15 on the bottom surface 11 located on the beam member 32. Then, the bolt holes 18h of the unit plate 18 and the bolt holes 15g of the unit plate 15 are fastened together by bolts and nuts. In this way, the unit plates 18 forming the partition wall 14 are erected and fixed to the end portions of the unit plates 15 forming the bottom surface 11. The joining pieces 18b of the adjacent unit plates 18 are also brought into contact with each other and fastened with bolts and nuts.

Of the two joining pieces 18b provided on the unit plate 18 located at the end of the partition wall 14, the joining piece 18b located on the outer side is the substrate 16 of the unit plate 16 constituting the side wall 12.
a is contacted. The unit plate 18 located at the end of the partition wall 14
Corresponding to the bolt hole 18f provided in the joining piece 18b of, the substrate 16a of the unit plate 16 constituting the side wall 12 is
A bolt hole 16m is provided, and the corresponding bolt hole 1
The unit plate 18 that forms the partition wall 14 and the unit plate 16 that forms the side wall 12 are joined by inserting the bolts into 8f and 16m and screwing the nuts.

In this case, each unit plate 1 constituting the partition wall 14
8 adjacent joint pieces 18b, between the joint pieces 18b of each unit plate 18 constituting the partition wall 14 and the substrate 16a of each unit plate 16 constituting the side wall 12, and an end face of each unit plate 18 constituting the partition wall 14. A packing (not shown) such as a tape-shaped PVC (polyvinyl chloride) foam sponge and a sealant is interposed between 18 d and the substrate 15 a of each unit plate 15 that constitutes the bottom surface 11.

Each unit plate 17 constituting the lid portion 13 is also formed of, for example, stainless steel, and has substantially the same structure as the unit plate 15 constituting the bottom face 11 of FIG. As shown in FIG. 1, each unit plate 1 constituting the lid portion 13
No bolt holes are provided in the board 17a and the reinforcing piece 17c of No. 7 in FIG.

The bolt holes 17h formed in one end surface 17d of each unit plate 17 forming the lid 13 are aligned with the bolt holes 16g formed in the substrate 16a of each unit plate 16 forming the side wall 12. To be done. Then, the bolt holes 17h of the unit plate 17 and the bolt holes 16g of the unit plate 16 are fastened together by bolts and nuts. In this manner, the unit plates 17 that form the lid portion 13 are horizontally fixed on the upper portions of the unit plates 16 that form the side wall 12 in two rows in the width direction. The joining pieces 17b of the adjacent unit plates 17 are also brought into contact with each other and fastened with bolts and nuts.

The end plates 17d of the respective unit plates 17 constituting each row are abutted against each other so that the bolt holes 17h are aligned with each other and joined by bolts and nuts.

Outermost unit plate 1 in each row
Among the two joining pieces 17b of No. 7, the joining piece 17b located on the outer side is the substrate 16a of the unit plate 16 constituting the side wall 12.
Abutted against. Then, each unit plate 1 constituting the lid portion 13
The bolts are inserted into the bolt holes 17f provided in the joining piece 17b of No. 7 and the bolt holes 16g provided in the upper end portion of the substrate 16a of each unit plate 16 forming the side wall 12, and the nuts are screwed together. As a result, the unit plate 17 that forms the lid portion 13 and each unit plate 16 that forms the side wall 12 are joined together.

In the assembled tank 1 as described above, as shown in FIG. 1, a drain pit 15n is formed on an arbitrary unit plate 15 of the plurality of unit plates 15 constituting the bottom surface 11, and the drain pit 15n is formed. A drain pipe 19a is connected to the bottom of the. Further, an overflow pipe 19 is provided at the upper end of the side wall 12.
b and the inflow pipe 19c are connected, and the water supply pipe 19d is connected to the lower end of the side wall 12.

The lid 13 has a doorway 19e with a lid for entering and leaving each tank chamber divided by the partition wall 14.
Are provided in each of the entrances and exits 19e, and an internal trap 19f is provided upright along the inner surface of the tank chamber.
The upper end of each is fixed. Also, each doorway 1
In the vicinity of 9e, the upper ends of the elevating and lowering traps 19g provided along the outer surface of the side wall 12 are fixed. The lid 13 is provided with an air vent 19h.

The unit plate 15 constituting the bottom surface 11 of the assembled tank 1 is bent so as to extend perpendicularly to the substrate 15a from the side edges along the longitudinal direction of the rectangular substrate 15a. Not only the joining pieces 15b are provided, but also the joining pieces 15b are bent vertically in a direction in which they approach each other from the leading edge of each joining piece 15b.
A reinforcing piece 15c which is parallel to 5a is attached.

In addition, the long plate-shaped unit plate 15 constituting the bottom surface 11 is arranged horizontally between the frame members 31 and the beam members 32 orthogonal to the concrete foundation 20 in the longitudinal direction with the joining piece 15b facing downward. They are laid across and arranged in the width direction.

When a liquid such as water is stored in the assembly-type tank 1 as described above, the liquid pressure causes the long plate-shaped unit plate 15 constituting the bottom surface 11 to be bent by bending downward in the longitudinal direction. To work.

However, at each side edge of each unit plate 15 along the longitudinal direction of the substrate 15a, a joining piece 15b bent so as to extend perpendicularly to the substrate 15a.
In addition, since the reinforcing pieces 15c, which are vertically bent in the directions approaching each other from the leading edges of the joint pieces 15b and are parallel to the substrate 15a, are integrally attached, the long plate-shaped unit plate Reference numeral 15 shows a large resistance to the action of hydraulic pressure to bend and bend downward in the longitudinal direction.

That is, the bending of the long plate-shaped unit plate 15 in the longitudinal direction is reliably suppressed.

The larger the distance between the base plate 15a of each unit plate 15 and each reinforcing piece 15c (the width dimension of the joining piece 15b) and the larger the width dimension of each reinforcing piece 15c, the cross section of the unit plate 15. The second moment becomes large and the unit plate 15
The bending of the can be suppressed to be smaller.

Further, since the liquid level of the stored liquid frequently goes up and down between the upper limit and the lower limit every day, each unit plate 1 on the bottom surface 11
The hydraulic pressure applied to 5 continues to fluctuate repeatedly every day, and each unit plate 1
5 is repeatedly loaded over a long period of time. However, each joining piece 15 is attached to the substrate 15a of each unit plate 15.
By integrally attaching not only b but each reinforcing piece 15c, the strength of the substrate 15 can be remarkably increased, and it is possible to prevent destruction due to repeated load. As a result, the substrate 15 constituting the unit plate 15
The thicknesses of a, the joint pieces 15b, and the reinforcement pieces 15c can be made thinner than the conventional products.

Further, the strength of the unit plate 15 is further increased by reducing the width dimension of the unit plate 15. Therefore, it is not necessary to form irregularities or the like for increasing the strength on the substrate 15a, and each unit plate 1 forming the bottom surface 11 is formed.
5 can be attached by abutting a flat surface such as an outlet on an arbitrary position of the flat surface of the substrate 15a of FIG.

Also, the joining piece 15b of the adjacent unit plates 15
When the parts are abutted to each other via the packing and fastened by the bolt and the nut, the reinforcing piece 15c is integrally provided on each joint piece 15b, so that only the peripheral portion of the bolt is deformed and the joint piece 15b is corrugated. There is no fear, and the joining pieces 15b can be evenly and firmly fastened over the whole. Therefore, there is no risk of water leakage from the central portion between the bolts, the pitch of the bolts can be increased, and the number of bolts can be reduced. As a result, the assembling work can be performed efficiently and the economical efficiency is improved.

The bottom surface 11 is supported by a pedestal 30 provided on the concrete foundation 20. Figure 4 (a)
4B is a schematic cross-sectional view showing the support state of the bottom surface 11, and FIG. 4B is a plan view of the gantry 30. Unit plate 1 that constitutes the bottom surface 11
Since 5 has high strength due to each reinforcing piece 15c, the distance L between the frame member 31 and the beam member 32 which hangs each unit plate 15 is 1.5 to 1.5 from the conventional one. It can be increased to about 3 m. As a result, the number of beam members 32 of the gantry 30 can be reduced, and the economical efficiency can be improved. Further, since the work space below the unit plate 15 is widened, the assembling work and maintenance and inspection work below the unit plate 15 are facilitated.

In this embodiment, the pedestal 30 has a frame shape, and the frame member 31 and the beam member 32 are also arranged in a direction orthogonal to the concrete foundation 20. As shown in (c), the pedestal 30 may be configured by installing the beam members 33 only on the linearly extending concrete foundation 20. Also in this case, each beam 33
Since it is possible to increase the distance between the concrete foundations 20, it is possible to increase the distance between the concrete foundations 20, which facilitates the assembly work, maintenance and inspection work under the unit plate 15.

The unit plates 16 and 18 constituting the side wall 12 and the partition wall 14 are also rectangular substrates 16a and 18a.
From the side edges along the longitudinal direction of the joining pieces 16b and 1
8b extend vertically and integrally, and
Reinforcing piece 16c from the leading edge of each joining piece 16b and 18b
And 18c extend integrally so as to approach each other and are parallel to the substrates 16a and 18a. Therefore,
The long plate-shaped unit plates 16 and 18 have great resistance to the action of the liquid that is bent outward in the longitudinal direction to be bent.

That is, the bending of the long plate-shaped unit plates 16 and 18 in the longitudinal direction is reliably suppressed.

The substrate 16 of each unit plate 16 and 18
The larger the distance between a and 18a and the respective reinforcing pieces 16c and 18c (the width dimension of the joining pieces 16b and 18b),
Further, the larger the width dimension of each of the reinforcing pieces 16c and 18c is, the larger the second moment of area of the unit plates 16 and 18 is, and the bending of the unit plates 16 and 18 is suppressed to be smaller.

Further, since the amount of the stored liquid repeatedly changes, the hydraulic pressure applied to each unit plate 16 and 18 continues to repeatedly change, and a repeated load is applied to each unit plate 16 and 18 for a long period of time. become. However, the substrates 16a and 18a of each unit plate 16 and 18 are
Not only the joint pieces 16b and 18b but also the reinforcement pieces 16
By integrally attaching c and 18c, it is possible to dramatically increase the strength of the unit plates 16 and 18, and it is possible to prevent destruction due to repeated loading. As a result, the substrate 1 of the unit plates 16 and 18
The thicknesses of 6a and 18a, the joint edges 16b and 18b, and the reinforcing pieces 16c and 18c can be made thinner than the conventional products.

Furthermore, the strength of the unit plates 16 and 18 is further increased by reducing the width dimension of the unit plates 16 and 18. Therefore, it is not necessary to form unevenness or the like for increasing the strength on the substrates 16a and 18a, and the unit plates 16 and 18 forming the sidewalls 12 and the partition walls 14 can be formed at arbitrary positions on the flat surfaces of the substrates 16a and 18a. The flat surface of the attachment such as the outlet can be brought into contact with and attached.

When the joining pieces 16b and 18b of the adjacent unit plates 16 and 18 are butted against each other via the packing and fastened with the bolts and nuts, the reinforcing pieces 16c and 18 are attached to the joining pieces 16b and 18b.
Since c is integrally provided, there is no risk that the joining pieces 16b and 18b will be wavy due to deformation of only the peripheral portion of the bolt, and the joining pieces 16b and 18b can be evenly and firmly fastened over the whole. Therefore, there is no risk of water leakage from the central portion between the bolts, the pitch of the bolts can be increased, and the number of bolts can be reduced. As a result, the assembling work can be performed efficiently and the economical efficiency is improved.

The unit plate 17 constituting the lid 13 is also joined from the side edges along the longitudinal direction of the rectangular substrate 17a to the joining piece 1.
7b each extend vertically vertically, and
Reinforcing pieces 17c are integrally extended from the leading edge of each joining piece 17b so as to approach each other and are parallel to the substrate 17a. That is, the unit plate 17 is strongly reinforced not only by the joining pieces 17b but also by the reinforcing pieces 17c. Therefore, even when an operator rides on the lid 13 for maintenance or a large snow load is applied, the unit plate 17 is bent or bent toward the inside of the tank and is damaged. Is surely prevented.

The larger the distance between the base plate 17a of each unit plate 17 and each reinforcing piece 17c (the width dimension of the joining piece 17b) and the larger the width dimension of each reinforcing piece 17c, the more the cross section of the unit plate 17 becomes. The second moment becomes large and the unit plate 17
The bending of the can be suppressed to be small.

Further, by reducing the width dimension of the unit plate 17, the strength of the unit plate 17 is further increased. Therefore, it is not necessary to form unevenness or the like for increasing the strength on the substrate 17a, and the unit plate 17 forming the lid 13 is eliminated.
Air bleed 1 at any position on the flat surface of the substrate 17a
The flat surface of the accessory such as 9h or an electrode seat (not shown) can be brought into contact with and attached.

Further, a strong wind such as a typhoon flows above the lid portion 13 and acts so as to float each unit plate 17 upward.
In addition, sloshing that occurs during an earthquake acts to push the lid 13 upward. Even in such a case, since each unit plate 17 is reinforced by the reinforcing piece 17c,
Each unit plate 17 is firmly held and damage or the like is prevented.

Further, each unit plate 17 constituting the lid portion 13
However, the joining pieces 17b vertically extend integrally from each side edge along the longitudinal direction of the rectangular substrate 17a,
Moreover, from the tip edge of each joining piece 17b, the reinforcing piece 17c
However, since they are integrally extended so as to approach each other and are parallel to the substrate 17a, the strength of each unit plate 17 is significantly increased, and the number of columns and beam members for supporting each unit plate 17 is increased. Can be reduced. Therefore, the economy is improved, and the burden of rust prevention work and maintenance inspection work on the support pillars is reduced.

If the substrates 15a and 17a of the unit plates 15 and 17 constituting the bottom surface 11 and the lid portion 13 are made flat without any unevenness, it will not slip even if an operator rides during maintenance and inspection. However, the worker may slip when walking. In particular, if water scale or the like is attached to the substrate 15a of each unit plate 15 forming the bottom surface 11, it is slippery and dangerous. Therefore, as shown in FIG. 5A, the substrates 15a and 17a of the unit plates 15 and 17 are formed.
A large number of raised straight linear projections 15p and 17p may be formed on the entire surface or a part of the surface of the above as a slip stopper. The protrusions 15p and 17p are arranged in a lattice along two directions orthogonal to each other. Further, as shown in FIG. 5B, a large number of short linear projections 15s and 17s projecting on the surfaces of the substrates 15a and 17a may be formed as a slip stopper along one direction. Further, as shown in FIG. 5C, the substrates 15a and 17 are
A large number of protrusions 15t protruding in a circular shape from the surface of a may be formed as a slip stopper. The protrusions 15t are arranged in a state of being arranged along two directions orthogonal to each other.

The unit plates 15-18 are composed of substrates 15a-18
Since the opening portions 15e to 18e are provided at the corner portions of a, when the corner portions of the substrates 15a to 18a are bolted,
Alternatively, a bolting machine or the like can be easily operated when bolting the ends of the joining pieces 15b to 18b.

In this embodiment, the partition wall 14 is provided in the tank.
However, instead of the partition wall, one side portion may be opened so that the liquid stored in the tank does not stay.

FIG. 6 is a partially cutaway perspective view of the prefabricated tank 1 according to another embodiment of the present invention. The prefabricated tank 1 of this embodiment is not provided with a partition wall inside, and a beam member 41 for supporting a lid is provided above the beam member 32 of the gantry 30 between the opposing side walls 12. The central portion of the beam member 41 is supported by a column 42 that is erected on the bottom surface 11.

As shown in FIGS. 7 (a) and 7 (b), each unit plate 15 constituting the bottom surface 11 of the assembled tank 1 of this embodiment has a side edge at each end of the reinforcing piece 15c which is arcuate. 2 except that the unit plate 15 shown in FIG.
The configuration is the same as the above, and the same members are denoted by the same reference numerals and the description thereof will be omitted.

Further, each unit plate 56 constituting the side wall 12
Is shown in FIGS. 8 (a) and 8 (b). This unit board 56
Is a rectangular flat substrate 56a and a joining piece 56b bent so that each side edge portion along the longitudinal direction of the substrate 56a extends perpendicularly to the substrate 56a.
And a reinforcing piece 56c that is bent in a direction perpendicular to each other from the leading edge of each joining piece 56b and is parallel to the substrate 56a.

The end face 56, which is bent vertically, is formed at the edge along the width direction at each end in the longitudinal direction of the substrate 56a.
d are provided respectively. Each end surface 56d is connected to the end of each joining piece 56b.

Appropriate notches are provided between the end portions of the reinforcing pieces 56c in the longitudinal direction and the end surfaces 56d, and the notches are open portions 56e.

Each joint piece 56b is provided with a plurality of bolt holes 56f at equal intervals in the longitudinal direction. Further, a plurality of bolt holes 56g are provided at each end of the substrate 56a at equal intervals in the width direction, and one bolt hole 56h is also provided in the center of one end surface 56d. The bolt holes 56h correspond to the unit plates 5 on the side wall 12.
This is for connecting the lower end of 6 and the pedestal 30.

Each unit plate 17 constituting the lid 13 is shown in FIG.
The unit plate 15 has a structure similar to that of the unit plate 15 shown in FIG. Other than that, it is used similarly to the assembled tank 1 shown in FIG.

In the unit plate of each of the above embodiments, the width dimension of the substrate was 500 mm and the length was 2000 mm, but the dimension is not limited to such dimensions. However, the width to length ratio of the substrate is preferably in the range of 1: 2 to 1:12, and the width dimension is preferably about 250 mm to 610 mm (2 feet). If the width dimension of the substrate is smaller than 250 mm, the reinforcing pieces are extended in the directions in which they approach each other, which may make the bolt tightening operation difficult. The reinforcing piece is preferably about 10 to 70 mm, particularly preferably about 20 to 50 mm.

In each of the above-described embodiments, the substrate of each unit plate is flat and has no unevenness. However, in the prefabricated tank 1 of FIG. 6, a part of the side wall 12 and a part of the lid 13 are shown. Like the unit plates 56 ′ and 17 ′ constituting the above, the central portion of the substrate may project outward in the shape of a truncated pyramid. Further, like the unit plate 56 ″ on each side wall 12, the central portion of the substrate 56 a may project in an arc shape.

FIGS. 9A and 9B show an example in which the unit plate 56 shown in FIG. 8 is improved. The unit plate 56 of this embodiment is one end surface 56 of the unit plate 56 shown in FIG.
While the d is removed, the tip end of each reinforcing piece 56c is folded back at a right angle to the substrate 56a side, and the folded-back portion 56 is formed.
It is configured to have z. In this way, the unit plate 56
Is formed by bending not only each joining piece 56b and each reinforcing piece 56c, but also each folded-back portion 56z integrally from each side edge portion along the longitudinal direction of the rectangular substrate 56a. It has great strength against external pressure such as water pressure that acts to bend the unit plate 56 in the longitudinal direction,
Bending is even smaller and less likely to break.

FIG. 10 shows an example in which the end portions of the reinforcing pieces 56c are connected to the end surfaces 56d without providing the open portions 56e at the corners of the unit plate 56.

In each of the above embodiments, the unit plates were bolted together. However, the joints (inner surface side or outer surface side of the tank) of the stainless steel unit plates are welded together. Good.

In the assembly type tank 1 of each of the above-described embodiments, each unit plate 17 constituting the lid 13 is also provided with the reinforcing piece 17c on the joining piece 17b, but it is necessary to consider the inside of the building and snow. In areas where there is no such space, the unit plate 17 that forms the lid 13
Need only have such strength that it will not be damaged when a person rides on it, and each unit plate 17 may not be provided with the reinforcing piece 17c. For example, as shown in FIG. 11A, joint pieces 17b are provided on each side edge of the unit plate 17 along the longitudinal direction of the substrate 17a, and an end face 17d is provided on each edge along the width direction. Structure provided, or FIG.
As shown in (b), the central portion of the substrate 17a may be projected upward in the shape of a truncated pyramid.

[0088]

EFFECTS OF THE INVENTION The unit plate for an assembling tank according to the present invention is integrally joined to a substrate so that each side edge portion along the longitudinal direction of the substrate extends perpendicularly to the substrate. And a reinforcing piece that is integrally provided with each joining piece so as to be parallel to the substrate and that extends from the leading edge of each joining piece toward each other. One surface of the tank is formed by connecting a plurality of unit plates to each other.

As described above, not only the joining piece bent so as to extend perpendicularly to the substrate from each side edge portion along the longitudinal direction of the rectangular substrate of the unit plate is attached. Further, since the reinforcing pieces are provided so as to be parallel to the substrate by being bent perpendicularly in the directions approaching each other from the leading edge of each joining piece, the unit plate is bent in the longitudinal direction to be bent. It shows great resistance to force. Therefore, it is not necessary to improve the strength by advancing a long body or an angle along the joining piece of the unit plates constituting the prefabricated tank, and due to the hydraulic pressure of the liquid stored in the tank or the snow load on the lid The bending of the unit plate is greatly suppressed, and stable use can be achieved for a long period of time without damage or the like.

Further, since the joining piece of the unit plate is reinforced by the reinforcing piece, when the bolts are tightened with the packing or the like interposed between the joining pieces, the joining piece will be wavy. And the sealing property is improved.

Further, since the joining pieces of the unit plates are reinforced by the reinforcing pieces, the number of beam members or the like for supporting the bottom surface or the lid portion can be reduced, and the workability and the economical efficiency are improved. .

Since the bottom surface and the side wall of the prefabricated tank of the present invention are constituted by such a unit plate, the bending of the bottom surface and the side wall is suppressed. Further, the liquid level in the tank constantly fluctuates, and repeated load is applied to the bottom surface and the side wall, but even with such a repeated load over a long period of time, stable use is possible without causing damage or the like.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view showing an example of an assembled tank according to the present invention.

FIG. 2 shows an example of a unit plate used on the bottom surface of the prefabricated tank, (a) is a partially cutaway perspective view of the unit plate, and (b) is a developed view thereof.

FIG. 3 shows an example of a unit plate used for the side wall of the assembly-type tank, (a) is a partially cutaway perspective view of the unit plate, and (b) is a development view thereof.

4A is a schematic cross-sectional view showing a support state of the bottom surface of the prefabricated tank, FIG. 4B is a plan view of a pedestal that supports the bottom surface of the prefabricated tank, and FIG. 4C is another example of the gantry. It is a top view.

5A to 5C are perspective views of essential parts showing an example of a front surface of a unit plate used for a bottom surface and a lid portion of a prefabricated tank, respectively.

FIG. 6 is a partially cutaway perspective view showing another example of the assembly-type tank of the present invention.

FIG. 7 shows an example of a unit plate used on the bottom surface of the assembled tank, (a) is a partially cutaway perspective view of the unit plate, and (b) is a developed view thereof.

FIG. 8 shows an example of a unit plate used for the side wall of the prefabricated tank, (a) is a partially cutaway perspective view of the unit plate, and (b) is a developed view thereof.

FIG. 9 shows another example of a unit plate used for the side wall of the assembly-type tank, (a) is a partially cutaway perspective view of the unit plate, and (b) is a development view thereof.

FIG. 10 is a partially cutaway perspective view showing another example of the unit plate used for the side wall of the assembly-type tank.

11 (a) and 11 (b) are partially cutaway perspective views showing another example of the unit plate used for the lid portion of the prefabricated tank.

FIG. 12A is a schematic cross-sectional view showing a state of supporting the bottom surface of a conventional assembly-type tank, FIG. 12B is a plan view of a pedestal supporting the bottom surface of a conventional assembly-type tank, and FIG. It is a top view showing an example of.

[Explanation of symbols]

 11 Bottom face 12 Side wall 13 Lid part 14 Partition wall 15, 16, 17, 18 Unit plate 15a, 16a, 17a, 18a Substrate 15b, 16b, 17b 18b Joining piece 15c, 16c, 17c, 18c Reinforcing piece 15d, 17d, 18d End surface 15e , 16e, 17e, 18e Open part 20 Concrete foundation 30 Stand 31 Frame material 32 Beam material

Claims (2)

[Claims] 1. A plurality of sheets are joined to each other,
A unit plate for an assembly-type tank in which one surface of a tank is formed, which is a rectangular substrate and a substrate that extends from each side edge along the longitudinal direction of the substrate perpendicularly to the substrate. Joint pieces provided integrally, extending from the tip edge of each joint piece in a direction approaching each other,
A unit plate for a prefabricated tank, comprising: a reinforcing piece integrally provided with each joining piece so as to be parallel to the substrate. 2. The bottom surface and the side wall are formed by arranging the unit plates for an assembly type tank according to claim 1 in the width direction and joining the joining pieces of adjacent unit plates. Assembled tank.