JPH0228236Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial field of application) This invention relates to a reinforcing structure for partition plates in a prefabricated storage tank.

(Prior Art) In a prefabricated storage tank assembled by joining together a plurality of bottom panels, side panels, and roof panels, the interior of the storage tank is partitioned by disposing a partition plate inside the tank. FIG. 5 shows an example. As shown in the figure, this partition plate 100 is usually constructed to have approximately the same height as the side panels by joining panels with flanges on the outer peripheral edge (strictly speaking, the thickness of the bottom panel 102 (lower than the side panels by the same amount), and its top edge is roof panel 1
04, the lateral flange 106 at the lower end is placed on the upper surface of the bottom panel 102 and fastened and fixed with bolts.

(Problem that the invention aims to solve) By the way, this partition plate expands to the lower pressure side based on the pressure difference between the chambers inside the storage tank partitioned by it, and even if the pressure difference disappears. When it returns to , the previous transformation is repeated. At this time, the partition plate undergoes significant deformation at the center in the vertical direction and at the joints between the panels. Along with this, the bolts that fasten the lower end flange of the partition plate to the bottom panel,
In particular, a large load is applied to the bolts located near the panel joints, which may deform the bolts and cause liquid leakage.

(Means for solving the problem) The present invention was made to solve the above problem, and its gist is that it is a storage tank assembled by joining together a number of bottom panels, side panels, and roof panels. In a prefabricated storage tank in which a partition plate formed by joining a plurality of panels at longitudinal flanges is disposed inside the tank, the tip of at least one of a pair of mutually overlapping flanges of the panels constituting the partition plate a channel which is bent in a direction parallel to the panel surface, has a predetermined length in the lateral direction, and is provided with bending ribs at both upper and lower widthwise ends at a position near the top surface of the bottom panel by a certain distance; The material is applied to the bent portion and the back side of the panel-to-panel joint in the partition plate, and the pair of channel materials are tightened with bolts.

(Function) If the lower part of the joint between the panels of the partition board is reinforced in this way, the lower part of the joint of the panels will bulge and deform based on the fluid pressure difference in the chamber inside the storage tank. However, the lower part does not deform much because its movement is restrained by the pair of channel members. Therefore, the load placed on the bolts near the joints between the panels of the partition plate is reduced, and deformation of the bolts and leakage of the liquid in the storage tank are also prevented.

Note that it is also possible to arrange a pair of channel materials at the lower end of the partition plate and fasten them with bolts, and also to fix the channel materials to the upper surface of the bottom panel with bolts.

However, in this case, although the fixing force of the partition plate to the bottom panel is increased, deformation of the partition plate, specifically, the joint portion of the panel as a component cannot be sufficiently prevented from deformation. This is because the deformation of the partition plate becomes large not at the part fixed to the bottom panel, but at the part above this (the part where the deformation is the largest is the upper and lower intermediate parts).

In contrast, in the present invention, the middle partition plate is reinforced at a certain distance above the top surface of the bottom panel using a pair of channel materials, so deformation of the middle partition plate can be more effectively suppressed. A bent portion is formed on the flange of the panel forming the partition plate, increasing the bending rigidity of the panel joint. Moreover, since the reinforcement by the pair of channel materials is performed near the part that is fixed to the bottom panel, the load is concentrated around the bolts that fix the partition plate to the bottom panel due to the deformation of the partition plate. This eliminates the problem of cracks in the bottom panel and leakage caused by this.

(Example) Next, an example of the present invention will be described in detail based on the drawings.

In Fig. 2, 10 is a concrete base, on which a plurality of FRP bottom panels 12 (see Fig. 4), side panels 14, and roof panels 16 are joined to each other at flanges formed on their outer peripheral edges. The assembled storage tank 18 is installed via a pedestal 20.

Inside the storage tank 18, a partition plate 22 formed by joining a plurality of panels is arranged. Partition board 2
2 is a side panel, 14, as shown in detail in FIG.
A panel 24 of the same shape and size as the vertical flange 2
6 and 28 are joined in the lateral direction, and the flange 30 at the lower end thereof is placed on the bottom panel 12 as shown in FIG. 4 and fastened and fixed with bolts. Note that the end portion of the vertical flange 26 of one panel 24 is bent into an L-shape. This bent portion 29 is for increasing the rigidity of the vertical flange 26.

On the inner surfaces of the flanges 26 and 28 of the panel 24, a reinforcing plate 32 and a backing plate 34, each having an L-shaped cross section and made of steel whose surface is coated with resin, are arranged in close contact with each other. 34, further vertical flanges 26, 28
They are fastened and fixed together with bolts that pass through them.

Below the joint between the panels 24 and 24 of the middle partition plate 22, specifically, at a predetermined distance above the top surface of the bottom panel 12, the bent end portion of the reinforcing plate 32 is provided as a seat plate portion 36. A length of channel material 38 is applied. Channel 38 is
It is a plate-like member having a U-shaped cross section with bending ribs 40 at both ends in the width direction, and is brought into close contact with the seat plate portion 36 on the flat surface on the back side.

On the other hand, as shown in FIG. 3, a similar channel material 38 is also arranged on the back side of the partition plate 22 (on the side opposite to the vertical flanges 26, 28). This channel material 38 is applied to the back surfaces of the panels 24 and 24, and this channel material 38 and the channel material 38 on the flanges 26, 28 side are strongly fastened with bolts 42.

Next, the action of the reinforcing structure of this example will be explained.

If a pressure difference occurs between the two chambers inside the storage tank 18 partitioned by the partition plate 22, for example, if the pressure in the chamber B on the right side in FIG. 22 tends to bulge toward the vertical flanges 26 and 28 based on the pressure difference therebetween.
At this time, the panels 24 and 24 tend to deform in the direction of opening their joints. However, in this example, the channel material 38 disposed laterally across these panels 24,
Since the movement of those panels 24 is restricted,
Deformation in the above direction is effectively suppressed. As a result, near the joint between the panels 24 and 24,
There is less strain on the bolts fastening those lower end flanges 30 onto the bottom panel 12.

Although the embodiments of the present invention have been described in detail above, the present invention can be configured in other forms.

For example, the bent portion 29 formed on the vertical flange 26 of the panel 24 can be used as a seat plate portion, and the channel material 38 can be applied to this. In addition, it is possible to configure the channel material in a form different from that of the above embodiment, and the present invention can be configured in various modified forms without departing from the spirit thereof.

(Effects of the invention) As detailed above, the invention is such that the lower end of the partition board is reinforced by sandwiching a pair of channel materials on both the front and back sides of the area near the joint between panels at the lower end of the partition plate. This is what I did.

This suppresses the deformation of the lower part of the joint between the panels of the partition plate, reducing the load on the part fixed to the bottom panel by the bolts, thereby preventing the deformation of the bolts and the occurrence of cracks in the bottom panel. And the problem of liquid leakage based on this is also solved.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a main part of a reinforcing structure for a partition plate according to an embodiment of the present invention, and FIG. 2 is a perspective view of an assembly type storage tank having the reinforcing structure. FIG. 3 is a perspective view of the reinforcing structure shown in FIG. 1 from a different angle, and FIG. 4 is a front sectional view of the same reinforcing structure.
FIG. 5 is an explanatory diagram for explaining problems that have conventionally occurred in assembled storage tanks. 12: Bottom panel, 14: Side panel, 16: Roof panel, 18: Storage tank, 22: Partition plate, 26,2
8, 30: flange, 36: seat plate, 38: channel material, 40: rib, 42: bolt.

Claims (1)

[Scope of claim for utility model registration] An assembled type storage tank in which a partition plate made of multiple panels joined at vertical flanges is placed inside the storage tank assembled by joining together a number of bottom panels, side panels, and roof panels. In this step, at least one tip of a pair of mutually overlapping flanges of a panel constituting the partition plate is bent in a direction parallel to the panel surface, and
A channel material having a predetermined length in the lateral direction and having bent ribs at both upper and lower ends in the width direction is attached at a position near the upper surface of the bottom panel at a certain distance from the upper surface of the bottom panel at the bent portion and the middle partition plate. A reinforcing structure for a partition plate in a prefabricated storage tank, characterized in that the reinforcing structure is applied to the back side of the joint between the panel and the panel, and the pair of channel members are tightened with bolts.