JPH0547474B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a storage tank ceiling reinforcing structure and its reinforcing device for improving the reinforcement of the ceiling by fixing it to the side wall of the storage tank.

[Background technology]

So-called prefabricated storage tanks installed on the rooftops or basements of buildings are required to have extremely high earthquake resistance. The bottom wall can be fixed to a frame fixed to the base, but there is no way to fix the side walls that will stand upright as firmly as the bottom wall, so tension rods are stretched between the opposing side walls, and the side walls and side walls A diagonal brace was inserted in between to improve earthquake resistance.

Recently, external reinforcement methods have been developed to replace these so-called internal reinforcement methods, and the seismic performance of side walls has been significantly improved. However, for ceiling walls that are attached to the top of side walls using bolts and nuts, there has been no effective means to improve seismic resistance, and in seismic tests, there is a possibility that failure may occur at the attachment point between the ceiling wall and side wall. .

Figure 1 shows the panel 2 that makes up the side wall 1 with a height of 2 m.
The width is 1m, and it is constructed by connecting the surrounding flanges 3,
The side wall 1 has the flange 3 reinforced with an external reinforcing member 4 forming a loop, and the bottom wall (not shown) and ceiling wall 5 are constructed by connecting a 1 m x 1 m panel 6 with a flange 7. be. However, according to seismic tests (conditions: sine wave resonance input several times higher than gravitational acceleration), cracks may occur at the attachment point between the side wall 1 and the ceiling wall 5, and this may lead to the rupture of the panel 6 that constitutes the ceiling wall 5. It turns out that there is.

FIG. 2 shows the installation of the side wall 1 and the ceiling wall 5. The first crack mentioned above occurred near the bolt 8 fixing both walls, and the head of the bolt 8 came out from the flange 7 of the ceiling panel 6. This is caused by the head of the bolt 8 breaking off. This is because the force is concentrated on the bolt 8 in the relationship between the side wall 1 and the ceiling wall 5 during vibration.

[Purpose of the invention]

The present invention was devised in view of these facts, and an object of the present invention is to provide a storage tank ceiling reinforcing structure and its reinforcing device that will not be destroyed even in the event of a major earthquake.

[Summary of the invention]

The storage tank ceiling reinforcing structure according to the present invention uses a side wall panel, a ceiling wall panel, and a bottom wall panel in which a flange portion is erected on the periphery of the panel portion, and the flange portion of the side wall panel is directed outward toward the ceiling. In a storage tank that is assembled by connecting the flange parts of the ceiling wall panels to each other and the flange parts of the ceiling wall panel and the panel parts of the side wall panels with the flange parts of the wall panels facing inward, the flange parts of the ceiling wall panels and It is disposed at the connecting part of the panel part of the side wall panel, one end of which is fixed integrally with the panel part of the side wall panel and the flange part of the ceiling wall panel that comes into contact with this panel part, and the other end is perpendicular to the panel part. It is characterized by comprising a horizontal reinforcing member fixed to the flange portion of the ceiling wall panel located at the ceiling.

Further, the storage tank ceiling reinforcing device according to the present invention is attached to a ceiling wall panel having a flange portion erected on the periphery thereof, and is fixed to the flange portion of the ceiling wall panel that comes into contact with a panel portion of a side wall panel. A tongue piece, another tongue piece fixed to a flange part of a ceiling wall panel located orthogonally to the panel part of the side wall panel, and a load that acts by connecting the one tongue piece and the other tongue piece. It is characterized by being comprised of a connecting piece that enables the transmission of information.

With such a structure, the present invention strengthens the joints between the side wall panels and the ceiling wall panels where seismic performance is most required, prevents prying deformation of the ceiling wall panels, and prevents the storage tank from being destroyed even in a major earthquake. can be constructed.

[Embodiments of the invention]

A more detailed explanation will be given below with reference to the drawings.

FIG. 3 shows a reinforcing structure according to an embodiment of the present invention, in which a flange 7' located around the ceiling wall 5 is directed inward, and bolts 8 and nuts 9 are attached to the inner surface of the top of the side wall 1. It is fixed to support the ceiling wall 5.
In the figure, 4 is an outer reinforcing member forming the aforementioned loop for reinforcing the flange 3 of the side wall panel 2 forming the side wall 1, and 10 is for fixing and supporting this outer reinforcing member 4 on the top of the side wall 1. It is an auxiliary material. This auxiliary member 10 can be attached by having a nut 9 that supports the ceiling wall 5 as a long cylinder, and screwing a second bolt 11 into the hole of this nut.

Here, reference numeral 12 denotes a horizontal tension reinforcing device of the present invention, in which a tongue piece 13 at one end is in contact with the flange 7' around the ceiling wall 5, and a tongue piece 15 at the other end of the frame 14 extending horizontally from this is in contact with the flange 7' around the ceiling wall 5. Flange 7' around wall 5
It is abutted against a flange 7″ extending at right angles inward from the
These are fixed with bolts 16 and nuts 17, and in particular the tongue piece 13 needs to be fixed integrally with the side wall. Since the flanges 7' and 7'' are perpendicular to each other, the tongues 13 and 15 are integrated with the body 14 so that their extension lines are perpendicular to each other.

This embodiment has such a reinforced structure, so the ceiling wall 5
This eliminates the possibility of damage to the storage tank due to damage to the attachment position of the side wall 1 and the side wall 1, that is, damage to the bolts 8 that attach them, and the flange 7'' of the ceiling wall 5 can now be effectively utilized in terms of seismic performance.

The horizontal reinforcement 12 used here is generally preferably provided on both sides of the flange 7'' of the ceiling wall 5, but in some cases it may be provided on one side. Although it is desirable to provide reinforcing tools 12, in some cases, the purpose may be achieved by providing only one reinforcing tool at a desired location, such as every other reinforcing tool.

FIG. 4 is an overall perspective view of the reinforcing device 12 shown in FIG.
A hole 18 for attachment to the flange 7'' is also drilled in the flange 7''.In this embodiment, tongue pieces 15, 15 are arranged across the flange 7'', and each tongue piece 13 is attached to the side wall of the flange 7'. is fixed integrally with.

FIG. 5 shows a horizontal reinforcement 12 according to another embodiment of the present invention, in which the frame 14 is divided into two parts. FIG. 6 shows still another example in which the frame 14 and the tongues 13, 15 are located on the same plane, but in this case it is preferable to integrate a right triangular support 19 by welding or the like. Note that the attachment hole formed in the tongue piece may have any shape, but by making it an elongated hole, the degree of freedom in attachment to the flanges 7', 7'' can be maintained.

Although the present invention is effective for a storage tank in which an external reinforcing member 4 is applied to a flange 3 of a side wall 1, it can also be used for internal reinforcement of a storage tank. As an example of the outer reinforcing material 4, a reinforcing material forming a loop has been explained, but the invention is not limited to these. It is also possible to use a reinforcing material 4.

〔Effect of the invention〕

Since the present invention has the above configuration, it is possible to construct a storage tank that will not be destroyed even in a major earthquake.

[Brief explanation of drawings]

Figure 1 is an overall view of the storage tank and its partially enlarged view, Figure 2 is a longitudinal sectional view showing the attachment of the side wall and ceiling wall;
FIG. 3 is a longitudinal sectional view showing a ceiling reinforcing structure according to an embodiment of the present invention, and FIGS. 4 to 6 are perspective views showing each example of a horizontal reinforcing device for reinforcing a ceiling according to the present invention. 1...Side wall, 5...Ceiling wall, 7, 7', 7''...
Ceiling wall flange, 12... Horizontal reinforcement, 13,
15... Tongue piece, 14... Body.

Claims (1)

[Scope of Claims] 1. Using a side wall panel, a ceiling wall panel, and a bottom wall panel each having a flange portion erected on the periphery of the panel portion, the flange portion of the side wall panel is directed outward, and the flange portion of the ceiling wall panel is In a storage tank that is assembled by connecting the flange parts of the ceiling wall panels to each other, and the flange parts of the ceiling wall panel and the panel parts of the side wall panels, with the flange parts facing inward, the flange parts of the ceiling wall panel and the side wall panel It is disposed at the connecting part of the panel part of the panel part, one end of which is fixed integrally with the panel part of the side wall panel and the flange part of the ceiling wall panel that comes into contact with this panel part, and the other end is located perpendicular to the panel part. A storage tank ceiling reinforcement structure characterized by comprising a horizontal reinforcement member fixed to a flange portion of a ceiling wall panel. 2. A tongue piece that is attached to a ceiling wall panel each having a flange portion erected on its peripheral edge and fixed to a flange portion of the ceiling wall panel that comes into contact with a panel portion of a side wall panel, and a panel portion of the side wall panel. another tongue piece fixed to a flange portion of a ceiling wall panel located orthogonally to each other, and a connecting piece that connects the one tongue piece and the other tongue piece to enable transmission of an acting load. A storage tank ceiling reinforcing device comprising: