JPH0215833Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial field of application) This invention relates to a prefabricated storage tank, and specifically relates to a roof reinforcement structure.

(Prior Art) In a prefabricated storage tank, a plurality of horizontally arranged roof panels are stacked on top of each other at flanges formed on their outer peripheral edges, and the flanges are fastened with bolts. The roof is then constructed.

By the way, in this prefabricated storage tank, the joint intersection where the joint surfaces of the four roof panels intersect is a structurally weak part, and for this reason, conventional methods have been used to reinforce this joint intersection. It is being said. FIGS. 7 and 8 show specific examples of the reinforcing means. In the example shown in FIG. 7, a substantially U-shaped reinforcing device 100 is fastened with bolts to the inner surfaces of a pair of flanges 102 that are adjacent to each other and extend in the same direction.
Furthermore, in the example shown in FIG.
It is applied to each inner surface of the flange of No. 06 and fastened with bolts.

(Problems to be solved by the invention) However, in all of these methods, reinforcing devices are provided on the inner surface of the flange of the roof panel, so the reinforcing devices are exposed to the atmosphere inside the storage tank. However, it had the disadvantage of being susceptible to rust due to chlorine ions inside the storage tank.

In addition, in the one shown in FIG. 7, in order to avoid interference between the flanges 102 and the flanges 108 extending perpendicularly to each other, the reinforcement
There is a problem in that a recess 110 must be provided in the tank 00, and in the case shown in FIG. In addition to the increase in the number of parts, there is also the problem that the assembly work is troublesome.

(Means for Solving the Problems) The present invention was made to solve the above problems, and its gist is that the bolts are inserted in the direction in which the bolts are inserted in the direction in which the plate extends. A reinforcement plate with a plurality of through holes arranged in 4
The reinforcing plate is interposed between the outer surfaces of the flanges facing each other at the joint intersection where the joint surfaces of the flanges of the two roof panels intersect, and the reinforcement plate is used to reinforce the joint intersection. be.

(Function) In this invention, the reinforcing plate is disposed between the outer surfaces of the flanges, and is not exposed to the atmosphere inside the storage tank, or even if it is exposed, only a small portion of the lower end thereof is exposed. Therefore, rust on the reinforcing plate is not so much of a problem.

Further, since the reinforcing plate does not need to avoid interference between the flanges to be fastened together and the flanges extending in the perpendicular direction, there is no need to form a recess like the above-mentioned reinforcing device 100, and furthermore, this reinforcing plate Since it is arranged between the outer surfaces of the flanges at the joint intersection of the panels, only one is required for each joint intersection, and the number required for the entire storage tank is also small.

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

FIG. 2 shows an example of a prefabricated storage tank according to the present invention. In the figure, 10 is a concrete base, 12 is a pedestal, and on this pedestal 12,
Bottom panel 14 and side wall panel 1 as unit panels
6. A storage tank is mounted in which the roof panels 18 are fastened together at their flanges. The bottom panel 14 and the roof panel 18 each have a square shape of 1 m x 1 m, while the side wall panel 16 is a large vertically elongated panel of 1 m x 2 m.

As shown in FIG. 1, reinforcing plates 25 are provided at each joint intersection where the joint surfaces of the four roof panels 18 intersect. The reinforcing plate 25 has a thickness of 1 mm to 2 mm as shown in FIG.
The flanges 20a and 20c are in the shape of a rectangular thin plate and are adjacent to each other at the junction intersection portion.
and flanges 20b and 20d, and each outer surface of flanges 20a and 20b,
It is arranged between the outer surfaces of the flanges 20c and 20d. Although not shown, these flanges 20a and 20b and 20c and 20d
A sealing material is disposed between the reinforcing plate 25 and the reinforcing plate 25, so that the reinforcing plate 25 is buried between these sealing materials.

As shown in FIG. 3, this reinforcing plate 25 is provided with a total of four bolt holes 22 and 24 in a row along the longitudinal direction. The bolt holes 22 and 24 are arranged such that a line connecting their centers is the flange 20.
They are arranged in a mountain shape such that they are inclined obliquely upward toward the boundary between the flanges a and 20c and the flanges 20b and 20d.

Next, the reinforcing effect of such a reinforcing plate 25 on the joint intersection portion of the roof panel 18 will be explained.

In the assembled storage tank of this example, the flange 20a
and 20b, the reinforcing plate 25, and the flange 2
0c and 20d are stacked in three layers, the fastening bolts are inserted into the bolt holes 22 of the reinforcing plate 25,
24 and the bolt holes 26 of each flange and are tightened. Therefore, this reinforcing plate 25 is
Flanges 20a, 20c and 20 extending in the same direction
b and 20d are firmly connected to reinforce the panel joint intersection portion, which is a weak point in the structure.

In addition, the reinforcing plate 25 of this example has the function of lifting the joints with the panels 18a and 18b upward when tightening the bolts. The bolt holes 26 of the flanges 20a to 20d are formed horizontally, whereas the bolt holes 22 and 24 of the reinforcing plate 25 are arranged in a mountain shape.
When bolts 2, 24, and 26 are inserted and tightened, the panel joint is lifted up based on the bending rigidity of the reinforcing plate 25. As a result, the entire roof of the storage tank becomes slightly bulged in the shape of a drum, as shown in FIG. This prevents the entire roof from sagging even when weight is applied to the roof due to snow accumulation or a person standing on the roof.

Note that the reinforcing plate of this example is limited to a thin one because it is disposed between the outer surfaces of the flanges of the roof panel. As a result, there is a certain limit to the reinforcing effect of the reinforcing plate 25 of the above configuration, but in such a case, it is effective to bend the lower part of the reinforcing plate 28 into an L-shape as shown in FIG. . By forming the bent portion 30, the section modulus of the reinforcing plate 28 becomes large, and the reinforcing plate 28
This is because the bending rigidity of is increased.

Although the embodiments of the present invention have been described in detail above, the present invention can be configured with various modifications based on the knowledge of those skilled in the art without departing from the spirit thereof.

(Effects of the invention) As described in detail above, the present invention provides a connection between the outer surfaces of the flanges at the joint intersection of the roof panels.
A reinforcing plate is provided with an array of through holes for bolt insertion.

Thereby, the rust of the reinforcing plate is suppressed, the reinforcing plate can be formed in a simple shape, and the number of reinforcing plates required for reinforcing the roof can be reduced.

[Brief explanation of the drawing]

FIG. 1 is a diagram schematically showing a reinforced portion of the roof of a prefabricated storage tank according to an embodiment of the present invention. Figure 2 is a partially cutaway perspective view of the prefabricated storage tank;
The figure is a front view of the reinforcing plate in FIG. 1. FIG. 4 is an exploded perspective view of the reinforcing portion in FIG. 1, and FIG. 5 is an explanatory view for explaining the action of the reinforcing plates in FIGS. 1, 3, and 4. FIG. 6 is a perspective view of a reinforcing plate used in another embodiment of the present invention, and FIGS. 7 and 8 are explanatory views for explaining a conventional roof reinforcing structure. 18: Roof panel, 20a, 20b, 20c,
20d: flange, 22, 24: bolt hole (through hole), 25, 28: reinforcing plate.

Claims (1)

[Scope of claim for utility model registration] (1) A roof is constructed by arranging a plurality of roof panels horizontally, overlapping the flanges formed on the outer peripheral edges of each panel, and fastening the flanges with bolts. In the prefabricated storage tank, a reinforcing plate having a thin plate shape and having a plurality of through holes arranged in the direction in which the bolts are inserted is inserted between the flanges of the four roof panels and the flanges. A roof of a prefabricated storage tank characterized in that the reinforcing plate is interposed between the facing outer surfaces of the flanges at the joint intersection portion where the respective joint surfaces intersect with each other, and the reinforcement plate reinforces the joint intersection portion. Reinforced structure. (2) The through-holes of the reinforcing plate shift diagonally upward as they approach the boundary between flanges extending in the same direction at the joint intersection, and the arrangement of the through-holes as a whole extends the boundary between the flanges extending in the same direction. The roof reinforcing structure according to claim 1 of the utility model registration claim, which has a chevron-shaped arrangement.