JPS5934591B2 - Reinforced unit panel for tank assembly and its manufacturing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a reinforced unit panel for tank assembly and a method for manufacturing the same.

BACKGROUND ART In recent years, water tanks and high-rise water tanks are commonly installed in high-rise buildings and the like to store drinking water for buildings and water for fire extinguishing purposes.

These tanks are manufactured in advance at the factory.
Square tray-shaped unit panels as shown in the figure are carried to the site, and the joining edges 10 of the unit panels are joined at the site by bolting or welding, and the resulting bottom wall, side walls, ceiling, etc. are assembled. It is usually configured as follows. By the way, FRP plates, painted steel plates, stainless steel plates, etc. are used as materials for these unit panels, but these have various drawbacks as shown below.

a) Unit panels made of FRP board have poor heat resistance because the material J is synthetic resin.

O When manufacturing a unit panel made of painted steel sheet, the four corners of the unit panel are welded, the welded parts are polished, and then the whole is painted, which makes the manufacturing process complicated and requires a high degree of skill.

Moreover, painting makes the steel plate susceptible to rust due to peeling due to external impact or bolt tightening, and deterioration due to long-term use, which is undesirable from both strength and hygiene points of view. (→
Since the stainless steel plate unit panel has a problem with the deep drawability of the stainless steel plate, advanced technology is required to provide a joint edge by press forming.

Furthermore, when assembling a tank, the unit panels are welded together on site, but not only does this assembly require skill, but it is also undesirable from a fire safety point of view. Corrosion is likely to occur due to corrosion and volatilization of chlorine added to the water for disinfection and sterilization.In addition, the stainless steel plate used as the material is expensive.The present invention
A reinforced unit panel that was created in view of the above-mentioned drawbacks of conventional products and is easy to manufacture, has high strength, and has excellent watertightness, heat resistance, rust prevention, and immortality, and a method for manufacturing the same. The purpose is to provide the following.

The present invention will be described below based on drawings showing one embodiment of the present invention.

Figure 2 shows glass fiber reinforced cement (hereinafter referred to as G) according to the present invention.
FIG. 3 is an enlarged perspective view of a corner of the reinforced unit panel.

In the figure, 1 is a flat plate part, and 2, . . . are joint edges formed adjacent to each other around the flat plate part 1. Joint edge 2
, . . . are bent at a predetermined angle such as 90 degrees or 135 degrees with respect to the flat plate portion 1, and the flat plate portion 1 and the joining edge portions 2, . It forms a body 20. 3, . . . indicate the inner boundary line between the flat plate portion 1 and the joining edge 2, . . . , and the adjacent joining edges 2, .
It also shows the inner Japanese line section between the lines.

Fillet mortar 4, . . . is filled and fixed in corners along boundary line portions 3j, . . . between adjacent joint edges 2, . Fillet mortar 4. , . . , may be fixed only to the four corners as shown in FIGS. It may also be filled and fixed along the hollow line portions 3, . . . . These fillet mortar 4,... are the boundary line part 3 of the reinforced unit panel.
, . . ., it is desirable to mix inorganic fibers such as glass fibers, steel fibers, or carbon fibers in accordance with that purpose. In addition, adjacent joint edges 2,
... Boundary line part 3, ... fillet mortar 4, ...
When fixing the fillet mortar 4, . Even better results can be obtained by placing it between the two. Reinforcement member 5
As the material, mesh-like metals such as glass fiber nets, cloths or mats, hexagonal wire meshes, metal laths, etc., or plate-like metals are preferable. In addition, when using the plate-shaped metal, it is desirable to provide a large number of claw-like small protrusions or drill a large number of small holes on the plate surface in order to improve adhesion to GRC and mortar. In addition, in order to reinforce the flat plate 1, the central area of the flat plate 1 is connected to the joint edge 2.
, . . . may be raised on the bent side or on the opposite side. The reinforced unit panel having the above structure is manufactured by the method described below.

Figure 5 shows GR manufactured by an appropriate method such as a spray method.
FIG. 2 is a perspective view of an uncured green board 6 made of C. First, surplus water from the GRC raw board 6 is appropriately dehydrated by pressing, vacuum suction, or the like. This is to prevent the fillet mortar filled in the corner from flowing during subsequent forming operations, and to give the fillet mortar appropriate hardness to allow deformation. This is also to prevent a decrease in watertightness and strength caused by pores remaining in the reinforced unit panel product. Next, the four corners 6a, . . . of the raw board 6 are cut out, or the four edges 6b, . . . of the raw board 6 are bent in the same direction without notching. The bending angle of each edge 6b, . . . with respect to the plane of the central portion 6c of the raw board 6 is a predetermined angle such as 90 degrees or 135 degrees. In this way, as shown in FIG. 6, a rectangular tray-shaped body 20 is formed in which the flat plate portion 1 and the joint edge portions 2, . . . are integrally formed.
Manufacture. In addition, the dehydration process of the raw board 6 and the tray-shaped body 20
This may be performed simultaneously with the molding step. Next, the flat plate part 1
Fillet mortar 4 with or without inorganic fibers mixed in as described above is applied to all or four corners of the inner boundary line portion 3, . . . formed by the joint edges 2, . Fill and fix. Of course, at this time, the reinforcing member 5 may be placed in the fillet mortar 4 or between the fillet mortar 4 and the boundary line portion 3 of the adjacent joint edge. Finally, the unit panel, in which the demarcation line part 3,... is strengthened by the reinforcing member 5, fillet mortar 4, etc. as described above, is subjected to air curing, underwater curing, steam curing, etc. It is cured and completed according to the method. FIG. 7 is a perspective view of the completed product. As described above, the reinforced unit panel according to the present invention is
Since it is made of GRC, it is thin and lightweight, yet has great strength, and has excellent nonflammability, rust prevention, and immortality.

In addition, the reinforced unit panels are easy to manufacture because no welding is required, and no special skill is required, and the resulting unit panels can be manufactured at low prices. In addition, fillet mortar is fixed to the whole of the itch line or to the ridge line part of the adjacent edge to strengthen it from the inside, so a tank assembled using the strengthened unit panel will be able to avoid stress concentrated in the itch line area. can withstand well.
On the other hand, in the reinforced unit panel manufacturing method according to the present invention, since the green board is thoroughly dehydrated in advance, it is easy to form, and since no pores remain in the final product, both strength and watertightness are high. .

Furthermore, fillet mortar for reinforcement is filled into the boundary line part when the unit panel is in an uncured state, and then the unit panel and the fillet mortar are cured and hardened together. It became possible to strengthen the adhesion, increase the strength of the finished unit panel, and also make it possible to improve watertightness.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a conventional unit panel, Fig. 2 is a perspective view of a reinforced unit panel according to the present invention, Fig. 3 is a partially enlarged perspective view of the same reinforced unit panel, and Fig. 4 is a perspective view of the reinforced unit panel according to the present invention. A perspective view of a reinforcing member used in a reinforced unit panel, and FIGS. 5 to 7 are diagrams each illustrating a method for manufacturing a reinforced unit panel according to the present invention, and FIG. 5 is a perspective view of a GRC raw board. , FIG. 6 is a perspective view of a tray-shaped body manufactured by bending the peripheral edge of the GRC raw board, and FIG. 7 is a perspective view of a tray-shaped body manufactured by bending the peripheral edge of the GRC raw board, and FIG. FIG. 1, 11... Flat plate part, 2, 10... Joint edge, 3, 12... Border line part, 4...
Mortar, 5...Reinforcement member, 6...G
RC raw board, 6b...peripheral part, 6c...
Central part, 20...basin-shaped body.

Claims (1)

[Scope of Claims] 1. A rectangular tray formed by a flat plate part made of glass fiber-reinforced cement and adjacent joining edges bent from the flat plate part at a predetermined angle so as to surround the four circumferences of the flat plate part. 1. A reinforced unit panel for tank assembly, characterized in that fillet mortar is fixed to at least each inner border between the adjacent joint edges in the unit panel. 2. The reinforced unit panel for tank assembly according to claim 1, wherein a reinforcing member such as a glass fiber net or a plate-shaped metal is disposed in the fillet mortar. 3. A step of appropriately dehydrating a green board made of glass fiber reinforced cement, and bending the peripheral edge of the green board at a predetermined angle to the center of the green board in the same direction to surround the flat part and its four circumferences. a step of forming a rectangular tray-shaped body forming joint edges that are adjacent to each other, a step of filling and fixing fillet mortar at least to the inner boundary line between the adjacent joint edges, and fixing the fillet mortar. A method for producing a unit panel for tank assembly, comprising the step of hardening and curing a rectangular tray-shaped body in air, water, steam, etc. 4. The method for manufacturing a reinforced unit panel for tank assembly according to claim 3, characterized in that a reinforcing member such as a glass fiber net or a metal plate is placed in the fillet mortar.