JPH0215832Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial field of application) This invention relates to a panel as a unit member constituting an assembly type storage tank.

(Prior Art) Conventionally, a storage tank has been assembled by joining a plurality of unit panels to each other. FIG. 11 shows an example.
As shown in the same figure and FIG. 12, in this type of storage tank, a square panel 100 (for example, 1 m x 1 m) is usually used as a unit panel, and a flange provided around the panel is connected with bolts. The storage tank can be assembled by joining them together with fasteners such as.

However, in such prefabricated storage tanks, there is a problem that the amount of joining work increases because a large number of unit panels must be joined.
Another problem is that reinforcing rods 110 must be provided at the joint intersections 108 between panels to reinforce the joint intersections 108, which are structurally weak points. Moreover, such reinforcement rod 1
If the reinforcing rod 110 is provided, the number of parts and the amount of work will increase, and the reinforcing rod 110 will get in the way when cleaning the inside of the storage tank.

For this reason, recently, as a unit panel, a rectangular panel whose longitudinal direction is the vertical direction when a storage tank is constructed (for example, 1 m (horizontal) x 2 m
Attempts have been made to construct a storage tank using (vertical)

If you use such a rectangular unit panel,
The number of unit panels required for the storage tank configuration can be reduced to reduce the amount of joining work, and the unit panel-to-unit panel joining intersection portion 108 can be reduced or eliminated, making the reinforcing rod 110 unnecessary. This is because it also becomes possible.

(Problem to be solved by the invention) However, when a storage tank is constructed using such rectangular unit panels, although the joint intersection of the panels, which is a weak point in the structure, is reduced or eliminated, Looking at individual panels, it is inevitable that the deformation resistance will decrease as the size of the panel increases.

(Means for Solving the Problems) The present invention was made to solve these problems, and its gist is that when a storage tank is constructed, a rectangular shape whose longitudinal direction is the vertical direction. A unit panel is formed in the unit panel, a flange portion rising from the panel plate surface is formed at least at both end edges in the width direction, and a first reinforcing core material is buried inside the flange portion over the entire length of the panel, and The second reinforcing core material is buried between the first reinforcing members in the panel width direction substantially perpendicular to the first reinforcing core material, and with both ends thereof in contact with the first reinforcing core materials. be.

(Function) In this way, even when a rectangular panel is used, deformation of the panel can be effectively prevented. This is because in the case of a rectangular panel whose longitudinal direction is the vertical direction of the storage tank, the panel tends to deform in the vertical direction (longitudinal direction) due to the pressure of the liquid stored inside the storage tank. This is because if reinforcing core materials are embedded throughout the entire length of the flanges on both sides extending in the longitudinal direction of the panel, the longitudinal rigidity of the panel will increase and the deformation resistance will increase. In particular, if the height of the storage tank is the same as the length of the rectangular panels, i.e., if the side walls of the storage tank are formed only by joining these rectangular panels laterally, then the top and bottom ends of each panel are covered with roofs. Since it is directly fastened to the panel or floor panel, its deformation can be effectively prevented by arranging reinforcing core material in the vertical direction.

By the way, this unit panel is usually formed by integrally molding resin such as FRP. At this time, these first reinforcing core materials are set in advance in a mold as inserts, and the resin is molded in that state, but at this time, there is a risk that the first reinforcing core materials may become misaligned within the mold.

However, in the unit panel of the present invention, the second reinforcing core material, which is set between the first reinforcing core materials in the panel width direction substantially perpendicular to the first reinforcing core materials, has both ends coming into contact with the first reinforcing core materials. This prevents its displacement. Therefore, the first reinforcing core material is positioned and fixed at a predetermined correct position inside the panel.

In addition, if the second reinforcing core material is disposed in the panel width direction in this way, the rigidity of the panel in the width direction (lateral direction) is also increased. Therefore, the rigidity of the panel in both vertical and horizontal directions perpendicular to each other is increased, and the overall strength is further improved.

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

Figures 1 to 4 show examples of the present invention.
This shows a unit panel made of FRP. As shown in the figure, this panel 10 has a rectangular shape with a width (width) of 1 m and a height (length) of 2 m, with the central portion in the longitudinal direction serving as a bulge portion 12, and both upper and lower portions thereof being flat plate portions. 14 and 16.
As shown in FIG. 9, the bulging portion 12 is a portion having an arcuate cross section and bulging toward the surface side, and is designed to be able to withstand pressure due to liquid storage.

On the other hand, as shown in FIG. 3, the flat plate portions 14 and 16 have flat surfaces on both the front and back surfaces, and are provided with an inlet, an outlet, etc. for the stored liquid. That is, the flat plate parts 14 and 16 are used for flanges for the liquid storage inlet and outlet (for example, the flange 10 in FIG. 11).
6) is dimensioned so that it can be attached. In this example, the vertical lengths L ₁ and L ₂ of the flat plate portions 14 and 16 are 600 mm and 550 mm, respectively.

A flange portion 15 is formed at the outer peripheral edge of the panel 10, rising vertically from the panel surface.
The flange portion 15 is a portion that is fastened to another panel using fasteners such as bolts, and has holes drilled at an appropriate number of locations for inserting bolts and the like.

The left side portion of the flange portion 15 in FIG. 2 is taller than the other portions, and a bent portion 26 is provided at the tip thereof. Also,
As shown in detail in FIG. 5, first reinforcing core members 28 and 30 made of steel are embedded in the flange portion 15 on both the left and right sides in FIG. These first reinforcing core materials 28 and 30 are buried over the entire length of the panel 10 and up to almost the entire height of the flange portion 15. Furthermore, first reinforcing core materials 28, 30
The bottom part of the panel 10 is bent in an L-shape towards the center of the panel 10, and not only the flange part 15 but also its peripheral parts are reinforced with the core materials 28 and 30. Note that the upper end of the first reinforcing core material 28 on the left side is also bent outward, and that portion is embedded inside the bent portion 26.

Ribs 18 and 20 are provided at the boundary between the flat plate portions 14 and 16 and the bulging portion 12 over substantially the entire width of the panel. Ribs 18 and 20 are panel 10
This is provided to strengthen the flat plate parts 14, 16, especially to prevent deformation of the flat plate parts 14, 16. As shown in FIGS. It is formed by making almost the entire meat protrude toward the surface side. In addition, as is clear from FIG. 8, in this example, the lower rib 20 is formed larger than the upper rib 18, but this is because the pressure due to the stored liquid is higher at the lower side of the storage tank. It is. These ribs 18,2
0 has a second reinforcing core material 2 made of steel with a trapezoidal cross section.
2, 24 are buried, and the panel 10 has ribs 18, 2
4 and the second reinforcing core materials 22, 24, the second reinforcing core material 22, 24 double-reinforces in the lateral direction. As shown in FIG. 6, these second reinforcing core materials 22 and 24 are embedded in such a manner that both ends thereof are in contact with the lower end surfaces of the first reinforcing core materials 28 and 30.

When configuring a storage tank using such unit panels 10, for example, when the storage tank is 2 m in height, the unit panels 10 are successively joined in the horizontal direction, and the upper and lower ends of the panels 10 are and may be joined to the roof panel and floor panel, respectively.

In such a storage tank, each unit panel 10
Since the upper and lower ends are directly fastened to the roof panel and floor panel, respectively, there is concern about deformation in the unit panel 10 exclusively in the vertical direction, that is, deformation in the direction in which the central portion in the longitudinal direction protrudes outside the storage tank. ,
The unit panel 10 of this example has a flange portion 15.
Since the first reinforcing core members 28 and 30 made of steel are embedded over the entire length in the longitudinal direction, such deformation does not occur. This first reinforcing core material 2
No. 8,30 exhibits excellent resistance to such deformation for the following reasons. First, the first reinforcing core materials 28 and 30 are attached to the panel 10 as shown in FIG.
Since the width direction of the plate (direction perpendicular to the plate thickness) is directed in the direction in which the force F is applied to the force F, it is difficult to deform in the direction shown by the two-dot chain line in the figure. This is an effect of embedding the first reinforcing core materials 28 and 30 in the flange portion 15 rising perpendicularly from the plate surface. Second, one of the first reinforcing core materials, that is, the first reinforcing core material 30, has a lower end bent into an L shape, and the first reinforcing core material 28
The upper end and the lower end are each bent into an L-shape, and these L-shaped bent parts function as ribs in the first reinforcing core material 28, 30, and by this effect, The first reinforcing core materials 28, 30 are even more difficult to deform.

In addition, when assembling a storage tank with a height of 3 m or more using a rectangular panel 10 having the dimensions of this example, a panel of the same type or another type may be joined to the upper side of this panel 10. It turns out. In this case, the lateral deformation of the panel 10 cannot be ignored, but since the panel 10 of this example is also provided with the second reinforcing core materials 22 and 24 in the lateral direction, such lateral deformation It also has strong resistance to deformation. In addition, this second reinforcing core core material 2
2 and 24 are flat plate portions 14, which are weak points in the structure;
16 and the bulging portion 12, and moreover, it is disposed at an equal dividing point that roughly divides the panel 10 into thirds in the longitudinal direction, and its shape is also a trapezoidal shape with a high section modulus. , to effectively and uniformly reinforce the panel 10 and prevent its deformation.

These second reinforcing core materials 22 and 24
It also serves to prevent the first reinforcing core materials 28, 30, which are set in the mold in advance during molding, from shifting in the mold during resin molding. If only the first reinforcing core materials 28 and 30 are provided within the panel 10 as described above, there is a risk that these first reinforcing core materials 28 and 30 may be misaligned during panel (resin) molding. , in the panel 10 of this example, the second
As is clear from the figures and FIG. 6, the second reinforcing core materials 22, 24 abut on the first reinforcing core materials 28, 30 at positions with appropriate vertical spacing, so to speak, the first reinforcing core materials 28, 30 , 30 to form a square-shaped framework to prevent displacement.

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

For example, rectangular panels of various sizes other than those listed above can be used, and the first reinforcing core material does not always have to be buried to the full height of the flange; It is also possible to use one with a width narrower than the width of the wafer, and it is also possible to change the shape as appropriate.

Further, in the above embodiment, two second reinforcing core materials are provided, but it is also possible to use only one second reinforcing core material. In this case, it is desirable to place it at a lower position (of the panel) where the pressure of the stored liquid is higher. moreover,
The shape of the second reinforcing core material is preferably trapezoidal in cross section as described above, as this will increase the reinforcing effect, but other shapes can also be selected, and the arrangement thereof may be as described above. It is also possible to embed it in a part other than the rib.

In addition, in cases where it is clear that the unit panels will not be joined in the vertical direction, the flanges at both the upper and lower edges of the panel may be omitted, as long as the present invention does not deviate from its gist. Various modifications can be made based on the knowledge of those skilled in the art.

(Effects of the invention) As detailed above, the present invention embeds the first reinforcing core material in the flanges on both side edges of a unit panel that is long in the vertical direction, and A second reinforcing core material is embedded inside. In the case of such a panel, the rigidity in both the vertical and horizontal directions is increased, further increasing its strength.In addition, when the panel is formed by molding resin, it is necessary to set the panel in advance as an insert in the mold. The positional shift of the first reinforcing core material is prevented, and the precision of the product is also improved.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a unit panel according to an embodiment of the present invention, and FIGS. 2 to 4 are a front view, a side sectional view, and a bottom view of the same unit panel, respectively. FIG. 5 is a cross-sectional view of FIG.
The figure is a - sectional view of FIG. Figure 7 is the second
8A and 8B are sectional views -A and -B of FIG. 2, respectively, FIG. 9 is a sectional view of -A of FIG. 2, and FIG. FIG. 9 is an explanatory diagram for explaining the action of the first reinforcing core material in FIGS. Figure 11 and 1
FIG. 2 is a perspective view of a conventional prefabricated storage tank and a square panel that is a constituent unit thereof. 10: unit panel, 15: flange part, 18,
20: Rib, 28, 30: First reinforcing core material, 22,
24: Second reinforcing core material.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A panel as a unit member constituting a prefabricated storage tank, which has a rectangular shape with the vertical direction as the longitudinal direction when the storage tank is constructed, and at least both edges in the width direction A flange portion rising from the panel surface is formed in the section, and a first reinforcing core material is buried inside the flange portion over the entire length of the panel, and a second reinforcing core material is buried between the first reinforcing core materials. A unit panel for a prefabricated storage tank, characterized in that a reinforcing core material is buried in the panel width direction substantially perpendicular to the first reinforcing core material, with both ends thereof in contact with the first reinforcing core material. (2) The unit panel for a prefabricated storage tank according to claim 1, wherein the second reinforcing core material is embedded inside a rib extending in the width direction of the panel.