JPS61102972A - Construction of pillar of high water tank - 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 Industrial Application] The present invention relates to a method of constructing column bases for elevated water tanks and the like.

[Conventional technology]

For example, when constructing column bases for elevated steel water tanks, conventionally,
A plurality of blocks constituting the column base are manufactured in a factory and transported to the site. First, the diblock 1 is erected by heavy machinery 4 as shown in Fig. 8(a), and then as shown in Fig. 8(b). As shown in the figure, after a temporary scaffold 5 and a ninth welded scaffold 6 are installed, a block 2 is erected and welded on top of the jib block 1 using heavy equipment 4, and a scaffold 7 is installed. Next, as shown in figure (c), the block 3 is erected and welded on top of the jib block 2 using heavy equipment 4, and the accessories inside the column base such as piping, monkey ladders, landings, etc. are attached to construct the column base. Finally, the foundation assembly was completed on the ground and the next water tank was mounted on top of Block 3.

[Problem that the invention seeks to solve]

The pillar bases of conventional steel elevated water tanks were constructed in the order described above, but there were the following problems.

(1) When transporting from the factory to the site, each block has a very large volume, making it extremely inefficient.

(2) A large space is required in the factory and on-site to place blocks, etc.

(3) Erecting and welding must be done at heights, which is dangerous.

(4) The welding scaffolding has to be removed after construction, which is not only a hassle, but also dangerous because it involves working at heights.

(5) Construction costs will be high because there is a lot of work to be done on site.

[Means for solving problems]

In order to solve the above-mentioned problems, the present invention accommodates the upper column base within the lower column base, and attaches accessories such as piping within the innermost column base to form a large block. After installing the lowermost column base on the foundation, it is sequentially lifted from the inner column base and connected to the lower column base, and the attachments of the lower column base are connected to the attachments attached to the upper column base. It was designed to do so.

[Effect]

After installing the bottom column pedestal on the foundation, the innermost column pedestal is lifted together with piping and other accessories using heavy machinery, and its lower end is welded to the top end of the next column pedestal, and the next tier's accessories are welded. Connect the above-mentioned attached column to the upper column's attachment, and then apply this step to the lower column's base in order, and weld and connect the column's connected column base to the lowest column's base.

〔Example〕

FIG. 1 is an explanatory diagram of a large block for explaining the present invention. In the figure, 11 is a truncated conical first pedestal,
A dancing area 12 is provided at the bottom. 21 is a cylindrical second pedestal disposed within the first pedestal 11; 31 is a second pedestal;
A cylindrical sixth pillar pedestal is disposed within the pedestal 21 of @6, and a dancing place 32 is provided at the top of the pedestal 31 of @6. (three are shown) and accessories such as a monkey ladder 34 are attached.

These constitute a large block 10. This large block 10 is manufactured in a factory, and accessories such as piping and monkey ladders for the first and second column bases 11 and 21 are prepared separately. .

Next, an example of a method for constructing a column base according to the present invention will be explained.

(1) Large block 10 and first and second column bases 11°21
Transport the piping and monkey ladders from the factory to the construction site.

(2) As shown in FIG. 1, install the large block 10 on the foundation 45 and set it in the anchor port 46.

(3) For use in welding, etc., a temporary scaffold 47 is provided around the outer periphery of the large block 10, as shown in FIG.

(4) As shown in FIG.
Weld to the upper end of 1.

(5) A landing pad 22 is provided on the upper part of the column base 21, and the inner surface of the column base 21.31 is welded from this landing pad 22 as necessary.

(6) As shown in Fig. 4, set the pipe 23 and monkey ladder 24 prepared in advance inside the column base 21, and connect them to the pipe 36 and monkey ladder 64 of the column base 31 by welding or the like. .

(7) Pipes 33, 23, monkey ladder 34.
24 with heavy equipment, and lift the lower end of the column base 21 to the column base 11.
Weld to the upper end of the

(8) A dance field 15 is provided on the upper part of the column base 11, and the inner surface of the column base 11.21 is welded from the mυ field 15 as necessary.

(9) As shown in Fig. 5(a), set the piping 13 and monkey ladder 14 prepared in advance inside the column base 11, and weld them to the piping 26 and monkey ladder 24 of the column base 21, respectively. Connecting.

αQ Once the construction of the column base is completed, the water tank section will be mounted on the column base.

Next, an example of the connection of each column base 11, 21, 31 will be explained with reference to FIG. (a) shows the lower ends of column bases 21 and 31 and column base 11
and 21, with a round bar 51 welded to the upper end of each.
When the column base 31 (or column base 31.21) is lifted by heavy machinery, the round bar 51 comes into contact with the round bar 51 of the column base 21 (or column base 11) and stops, so welding 55 after level erection adjustment is performed. do.

(b) shows the lower end of column 1 legs 21 and 31 and column legs 11 and 21.
A steel plate 52 is welded to the upper end of each of the above (a).
) Weld both together in the same way as in the case of ).

In (c) and (d), a round bar 51 or a steel plate 52 is welded only to the lower end of the column base 21, 31, and the column base 31 (or 2
The round rod 51 (or steel plate 52) of 1) is attached to the column base 2.
1 (or 11) Adjust the leveling at the position where K is caught and stopped, and weld the two together.

In (e), a round bar 51 is attached to the lower end of the column base 21.31, and the column base 1
1. Steel plate 52 is welded to the upper end of 21, and both are welded in the same manner as above.

The above is an example of connection of column bases, and these may be combined as appropriate, or other means may be used.

FIG. 7 shows another embodiment of the present invention. For example, if the column base 11a is large and cannot be transported by truck, trailer, etc., as shown in FIG. The column bases 11a are assembled on-site and installed on the foundation 45, and the second to fourth column bases 21a, 31a are installed at the factory as shown in FIG.

The large block 10a obtained by assembling the blocks 41a is carried to the site, installed inside the column base 11&, and erected as shown in FIGS. 1 to 5 above.

For example, if you want to shorten the construction period, as shown in FIG. 8, V (b
) As shown in the figure, the large block 10 is installed on the surface plate 48, and the second to fourth column bases 21a to 41at - Figures 3 and 4 are installed.
After the installation of the column base 11a is completed, connect the piping 2 in sequence as shown in the figure.
3&~43a1 The second with monkey ladders 24a~44a etc.
- The fourth column pedestals 21a to 41a can be integrally mounted on the first column pedestal 11a using heavy machinery and connected by welding.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, the following remarkable effects can be achieved.

(1) Since the number of blocks is reduced, transportation efficiency is improved and costs can be reduced.

(2) Small space is required for parts storage in factories and on-site.

(3) Welding scaffolds for connecting column bases, piping, monkey ladders, etc. need only be placed at one location, and welding work can always be performed at a constant level.

(4) There is no need for welding or construction work at high places as in the past, and there is also no need for construction or dismantling work of high-place scaffolding, elevating steps, etc.

(5) Installation work for piping, monkey ladders, landings, etc. inside the column base will be completed at the same time as the column base construction is completed.

(6) As a result of these things, work efficiency is greatly improved,
Not only can it shorten the construction period, but it can also reduce construction costs.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of an example of a large block for implementing the present invention, Figs. 2 to 5 (a) are explanatory diagrams of an example of the construction method according to the present invention, and Fig. 5 (b), ( c) are sectional views taken along lines A-A and B-B in FIG. 5(a), and FIG. 6(a) to
(s) is an explanatory diagram showing an example of the connection of the upper and lower column bases, and Fig. 7 (a)
). (b) and FIGS. 8(a) and (b) are explanatory diagrams showing other embodiments of the present invention, respectively, and FIG. 9 is an explanatory diagram of a conventional method of constructing a column base. 10.10a: Large block, 11e11m. 21.21a, 31.31m, 41a: Column base, 12.1
5.22, 22a, 32, 32a, 42a: Odoshiba, 1
3-23, 23a, 33-33m. 46a: Piping, 14, 24.24a, 34° 34m, 4
4a: Monkey ladder, 45: Basics. Agent Patent Attorney Sanro Kimura Figure 2 n Figure 3 ^ ■ Figure 4 Thousand (C)

Claims (1)

[Claims] In a column base of an elevated water tank or the like formed by connecting a plurality of divided column bases, the upper column base is accommodated in the lower column base, and piping, etc. is housed in the innermost column base. Attach the accessories to form a large block, install the bottom column base on the foundation, then lift it up from the inner column base in order and connect it to the lower column base, and connect the attachments attached to the upper column base. A method of constructing a column base for an elevated water tank, etc., characterized by connecting attachments of the lower column base.