JPS6145745B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Generally, in a concrete liquid tank, a lining material is provided on the inner peripheral surface of the tank for the purpose of preventing leakage of stored liquid and facilitating cleaning work. This lining material is usually made of austenitic stainless steel, and its back side is anchored to the concrete frame.

Conventionally, in lining this type of concrete liquid tank, reinforcing bars 1 are assembled on the back side of the mortar pinch pouring face a, primary embedded metal fittings 2 and 3 are attached, and then concrete is lined through the formwork installation separator 4. After installing the formwork 5 and fixing it with thick timbers 6, concrete 7 for the frame is poured to complete the primary installation. (See Figure 2) Next, adjust the adjustment bolts 10, 11 with the secondary embedded metal fittings 8, 9 that constitute the lining base metal fittings for attaching the lining to the lining tank reference surface b.
Attach it to a predetermined position with respect to the primary embedded metal fittings 2 and 3 by using the screws. In this case, as shown in the figure, the adjustment bolt 1
In some cases, the adjustment section steel 12 is used in combination with 0 to adjust the mounting position of the secondary embedded metal fitting 8. After the secondary embedded metal fittings 8 and 9 are set in the predetermined positions in this way, the mortar filling form 13 is attached using the separator 4 and fixed with the end pieces 14 in the same way as in the case of the primary installation, and then the mortar 15 is to complete the secondary installation. (See Figure 3) Next, after the filled mortar has cured, the mold is removed, and lining plates 16 and 17 are layered on the mortar surface and fixed to the secondary embedded metal fittings 8 and 9 by welding 18 and 19,
Completed lining work on the side walls of the liquid tank. (See Figures 4 and 1) However, in the conventional method, the primary embedding→
The process of concrete pouring → secondary embedding → mortar filling → lining plate welding installation is complicated, and lining work for large-capacity liquid tanks has to be divided into several stages, so plant facilities This is also one of the reasons that the overall construction period is being extended.

The present invention aims to eliminate such drawbacks, and provides a lining block in which reinforcing bars are arranged in the side wall components of the liquid tank, and then lining plates are connected in advance to form a divided pit lining. are arranged side by side on a portion corresponding to the inward surface of the side wall component, then the outer peripheral edges of each of the adjacent blocks are welded to integrate the blocks, and then installed along the outward surface of the side wall component. The concrete formwork and the integrated lining block are connected by formwork assembly members, and then concrete is poured between the integrated lining block and the concrete formwork, and the poured concrete is cured. The method of constructing a concrete liquid tank is characterized in that the concrete formwork is then removed to construct a concrete side wall, and the purpose thereof is to simplify the construction and provide high reliability.
The object of the present invention is to provide an improved method of constructing a concrete liquid tank.

In the present invention, a lining block having a shape obtained by combining a plurality of lining plates and dividing the pit lining of a required concrete liquid tank is manufactured in advance, and the lining block is transported to the site and the side wall components of the liquid tank are assembled. After arranging reinforcing reinforcing bars, the lining blocks are placed side by side on the portion corresponding to the inward surface of the side wall component, and the outer edges of adjacent lining blocks are welded to integrate each block into a pit lining. The thus integrated lining block and the concrete formwork installed along the outward surface of the side wall portion are connected by formwork assembly members, and the integrated lining block is poured into side wall concrete. Concrete is poured between the integrated lining block and the concrete formwork, and after the poured concrete has hardened, the concrete formwork is removed, thus forming the side wall concrete. Pouring and lining construction are performed at the same time.

As described above, according to the present invention, a large lining block having a shape in which pit lining is divided by joining lining plates is assembled in advance in a factory, on-site temporary assembly factory, etc., and a lining block that will eventually become a part of the side wall is assembled. By using it as an inner mold during concrete pouring, the conventional primary embedding,
Compared to the split process of secondary embedding, this method significantly reduces the number of on-site processes, simplifies the process, and improves work efficiency.

In addition, in the present invention, by using a large lining block made by further blocking the lining plate, the number of construction weld lines at the liquid tank construction site can be significantly reduced, and welding defects caused by the poor working environment at the site can be reduced. The occurrence can be suppressed.

Furthermore, in the present invention, before concrete placement,
By completing the welding of the lining plate, there is no possibility of water content in the concrete being drawn into the welded part, and a highly reliable lining can be constructed.

As described above, according to the present invention, the construction process is greatly simplified, the construction period is shortened, and construction costs are reduced.
A highly reliable concrete liquid tank will be constructed.

The present invention will be described below with reference to the illustrated embodiments.
A plurality of lining plates 21 are assembled by welding in advance at a factory or a temporary assembly factory on site, and the pit lining 22 shown in FIG. 6 is divided into the required number of concrete blocks 22a, 22b,
Assemble 22c and 22d. (See Figure 7.) As shown in Figures 8 and 9, the lining plate 21 is a large type with reinforcing materials 23 attached in a lattice pattern to the back of the lining plate to withstand the lateral pressure during concrete pouring. Consists of a lining plate,
Furthermore, a support mounting embedded board 24 for installing equipment, piping, etc. is welded 25, and after the on-site suspension, a boss 27 for attaching an anchor 26 is welded to the back surface of the embedded board 24. There is.

The large lining plates 21 are connected by welding 28 to form lining blocks 22a, 22b, 22c, 2 up to the allowable limit weight of the lifting equipment.
2d is assembled. In the figure, reference numeral 29 denotes a base metal fitting arranged on the back side of the weld line 28 between the lining plates 21.

In the illustrated embodiment, pit lining consists of four lining blocks 22a, 22b, 2
Although the pit lining is divided into 2c and 22d, the entire pit lining may be made into blocks at once as long as the storage tank is within the allowable range of the lifting equipment.

Therefore, for construction, first assemble the tank side reinforcing bars 30, and then attach each of the lining blocks 22a, 22b,
22c and 22d are suspended in a predetermined position, and the outer peripheral edges of the lining plates of adjacent lining blocks are welded together, and then the embedded anchor 26 is attached to the boss 27.
Then, the reinforcing bars 31 on the opposite side of the tank are arranged, the separator 32 is attached to the reinforcing material 23 of the lining plate, the concrete formwork 33 is arranged, and the end thick material 34 is installed.
Fix it with. Next, concrete 35 is poured between the lining block and the formwork 33 to construct a concrete side wall, completing the entire process.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal cross-sectional view of a conventional concrete liquid tank, Figs. 2 to 4 are longitudinal cross-sectional views showing the construction process, and Fig. 5 is an implementation of the concrete liquid tank construction method according to the present invention. 6 is a perspective view of the pit lining, FIG. 7 is a perspective view of the lining block, and FIGS. 8 and 9
The figures are a front view, a side view, and a side view of the lining plate, respectively.
Figure 0 is a front view of the inner lining portion of the lining plate. 21... Lining plate, 22a, 22b, 22
c, 22d...Lining block, 30...tank side reinforcement, 35...concrete.

Claims (1)

[Claims] 1. Arranging reinforcing reinforcing bars in the side wall component of the liquid tank, and then lining blocks, which are assembled into a shape in which pit lining is divided by combining lining plates in advance, are placed side by side on a portion corresponding to the inward surface of the side wall component. Next, the outer peripheral edges of each of the adjacent blocks are welded to integrate the same blocks, and then the integrated lining block is molded into a concrete form installed along the outward facing surface of the side wall component. They are connected by frame assembly members, and then concrete is poured between the integrated lining block and the concrete formwork, and after the poured concrete has hardened, the concrete formwork is removed to form a concrete side wall. A method of constructing a concrete liquid tank characterized by the following.