JPS6068292A - Storage-tank ceiling reinforcing sturcture and reinforcing tool thereof - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a reinforcing structure for a tank that improves reinforcement of a ceiling by being fixed to a side wall of a storage tank, and a structure of a reinforcing device thereof.

[Background technology]

So-called prefabricated storage tanks installed on the rooftops or basements of buildings have extremely high earthquake resistance. The bottom wall can be fixed to a frame fixed to the base, but from now on, there is no means to fix the opposing side walls (d/bottom wall ti and strong Earthquake resistance was increased by installing concrete walls and by inserting a spacer between the wall and the side wall.

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, there is no effective means to improve the seismic resistance of the ceiling wall, which is attached to the top of the side wall using bolts, bolts, etc., and in seismic tests, failure occurred at the attachment point between the wall and the side wall. There is a river ability.

Figure 1 shows the panel 2 that constitutes the side wall 1 with a height of 2 m and a width of ] m.
A side wall 1 constructed by connecting surrounding flanges 3 and reinforced with an external reinforcing layer 4 forming a loop, including a bottom wall (not shown) and a ceiling wall 5], nT
1. It is constructed by similarly connecting the flanges 7 to the nl panels 6. However, according to seismic tests (conditions: sine wave resonance input several times higher than gravitational acceleration), side wall 1 and ceiling wall 5
It has been found that cracks occur in certain places when the ceiling wall is installed, and that this may lead to the destruction of the panel 6 that constitutes the ceiling wall 5.

Although only a few examples of the side wall 1 and the ceiling wall 5 are shown in FIG.
In addition, the first cracks occurred near the bolts 8 that fixed both walls, and were caused by the heads of the bolts 8 coming off the ridges 7 of the ceiling panel 6, or by the heads of the bolts 8 breaking off. ing. 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 invented in view of the following facts,
The purpose is to create a storage tank ceiling reinforcement structure and its reinforcement that will not be destroyed even in the event of a major earthquake.

[Synopsis of the invention]

Storage tank ceiling reinforcement structure according to the present invention - 2. The lower part of the side wall formed by connecting the side wall panels with flanges formed at least on the left and right edges with the flanges facing outward is fixed to the bottom wall in a watertight manner7, A storage tank in which a flange is formed around the top of the side wall, and the flange around the ceiling wall is fixed by connecting the flanges of the ceiling panels facing inward,
The flange around the ceiling wall is inserted into the inner surface of the top of the side wall and fixed with a nut, and one end is fixed to the ceiling panel flange extending inward at right angles from the flange around the ceiling wall. It is characterized in that the other end is provided with horizontal reinforcement Al that is fixed to the peripheral flange of the ceiling wall together with the side wall.

Further, the reinforcing device according to the present invention is a horizontal reinforcement having a tongue piece that abuts a flange around the ceiling wall at one end and a tongue piece that abuts a flange extending inward at right angles from the flange around the ceiling wall at the other end. 17, characterized in that both tongue pieces are arranged so that their extension lines are orthogonal to each other. What about this invention?
Because of its structure, it was able to achieve its intended purpose without destroying the tank even in the event of an extremely large earthquake.

[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' extending around the ceiling wall 5 faces inward 7, and bolts 8 and nuts are attached to the inner surface of the top of the side wall 1. 9 to support the ceiling wall 5. In the figure, reference numeral 4 indicates an outer reinforcing member forming the aforementioned loop of the receptacle for reinforcing the flange 3 of the side wall panel 2 forming the side wall 1, and reference numeral 10 indicates an outer reinforcing member for supporting the outer reinforcing member 4 on the top of the side wall 1. It is an auxiliary material. In this auxiliary phase JO, the nut 9 that supports the ceiling wall 5 is made into a long cylinder, and the second bolt 11 can be screwed 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 [3] at one end is in contact with a flange 7' around the ceiling wall 5, and a tongue piece 15 at the other end of the frame 14 extends horizontally from this. is abutted against a flange 7'' extending inward at right angles from a flange 7' around the ceiling wall 5, and these bolts 16 and nuts 17
In particular, the tongue piece 13 needs to be fixed integrally with the side wall 1. Flange 7′ and Flange 7″
Since the two tongues 13 and 15 are orthogonal to each other, the tongues 13 and 15 are integrated with the body 14 so that their extension lines are located at right angles.

In this embodiment, a reinforcing structure is used, so the ceiling wall 5 and side wall j
In order to prevent damage to the storage tank due to breakage of the bolts 8, etc., and to make effective use of the flange 7'' of the ceiling wall 5 in terms of seismic performance. became.

The horizontal reinforcement 12 used here is generally attached to the ceiling wall 5.
It is preferable that the flange 7" be provided on both sides of the flange 7", but depending on the case, it may be provided on one side.Also, the flange 7"
It is desirable to have reinforcing tools 12 in all of the areas, but depending on the situation, reinforcing tools 12 may be provided at desired locations, such as every other reinforcing tool. ``・-O alone can achieve the purpose.

FIG. 4 is an overall perspective view of the reinforcing device 12 shown in FIG. A hole 18 for attachment to the flage 7'' is also drilled.

In this embodiment, the tongue piece 15 is placed between the flange 7''.
15 is arranged, ej: each tongue piece 13 is arranged on the flange 7'.
is integrally fixed to the side wall 1.

FIG. 5 shows a horizontal reinforcement J2 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 tongue pieces 13, 15 are placed on the same plane, but in this case it is preferable to integrate the right triangular shaped moon 19 by welding or the like. Note that the mounting hole formed in the tongue piece may have any shape, but by making it an elongated hole, a degree of freedom can be maintained in mounting it to the flanges 7' and 7''.

Figure 7 shows another example of attachment to the side wall 1.
This shows an example in which the angle is indirectly taken through an L-shaped angle 2G fixed to the side wall 1.

Although it may be necessary to improve seismic performance when attaching the side wall 1 and the bottom wall 21, both ends are fixed directly or indirectly to the side wall 1 and the bottom wall 25 as shown in FIG. The seismic performance can be increased by fixing the diagonally reinforced moon 22 using bolts 23, nuts 24, etc.
It is Noh. It is also possible to use the reinforcing material 22 with the right and left sides reversed.

Figures 9 to 12 show various diagonal reinforcing materials 22 similar to Figure 8.
The case is shown in which it is actually fixed to the side wall 1 and the bottom wall 2].

In the figure, 26 is a mouth section steel, 27 is a J-T section steel, and 25 is a pedestal that is indirectly fixed to the bottom wall (or side wall 1) 21. It is also possible to use the 11-shape d-shaped steel of ladle number 27 back to back.

Although the present invention is effective for a storage tank in which the outer reinforcing member 4 is applied to the side wall 1's flap/73, the storage tank 4!1! Of course, it can also be used in the case of the internal reinforcement method of i. (As an example of reinforcing phase 4, we explained the reinforcement that forms a loop, but
However, the present invention is not limited to these, but it is also possible to make the external reinforcement 4 by abutting a shaped steel, a shaped steel, etc. on one or both sides of the fledge.

〔Effect of the invention〕

As explained above, the present invention is capable of removing the gap between the side wall and the ceiling wall where seismic performance is most required as described above, by using the flanges facing inside of the panels constituting the ceiling wall. (It has the excellent effect of reducing the burden on the Kawa and Otsuki panels, preventing the ceiling panels from closing and deforming, and significantly improving the seismic damping performance.

[Brief explanation of drawings]

Figure 1 is an overall view of the storage tank and its partial enlargement.
The bacteria are shown in the third vertical cross-sectional view showing the gap between the side wall and the large moon wall.
Figure 1 Heaven according to the embodiment of the present invention: Jl: ej 1 in 1 mouth
1 structure, FIGS. 4 to 6 are longitudinal sectional views showing the structure of the invention.
FIG. 7 is a partial vertical cross-sectional view showing another example of the ceiling reinforcing structure of the present invention.
Figures 1 to 12 are a vertical cross-sectional view showing the ground clearance between the side wall and the bottom wall, and a perspective view showing the portion thereof. 1 Side wall, 5 Ceiling wall, 7.7', 7" Ceiling wall flange, 12 Lateral reinforcement, 13, ]5 Tongue piece, 14 Frame. Agent, ', Patent attorney Jin Nakajima φ. Figure 1 (C) (D) Figure 2 Figure 3 Figure 4 Figure 2 Figure 7 5 (A) (B) Figure 9 (B) 10 [2] Figure 11 (A) 26 11,.-1 1.1(B) (B)

Claims (2)

[Claims] (1) The F part of the connected side wall panel, which has flanges formed on at least the left and right edges, is fixed to the bottom wall with the flanges facing outward. Fix the flanges around the ceiling walls connected with the flanges of the ceiling tunnels facing inward to the side walls-2 1
In the storage tank, the flange around the ceiling wall is inserted into the inner surface of the top of the side wall, and one end is inserted into the ceiling panel flange that extends inward at right angles from the flange around the tendon wall. A storage tank ceiling reinforcing structure characterized by comprising a horizontal reinforcing member which is fixed and whose other end is fixed to a peripheral flange of a ceiling wall along with a side wall. (2) A lateral tension reinforcing device having a tongue piece at one end that contacts a flange around the ceiling wall, and a tongue piece at the other end that comes into contact with a flange extending inward at right angles from the flange around the ceiling wall, The extension lines of both tongues are arranged to be perpendicular to the tank ceiling ≠ the reinforcement.