JPH0598657A - Installation method for underground tank storage device - Google Patents

Abstract

PURPOSE:To easily perform the installation work of an underground tank in a short period without requiring to form foundation beds and upper beds via on-site construction and simply perform the transportation and installation of the foundation bed and the upper bed in installing the large-capacity underground tank. CONSTITUTION:An installation hole 1 is dug at the installation position of a device, cobble stones 2 are spread at the bottom section of the installation hole 1, and leveling concrete 3 is placed. An installation frame 4 is installed on the leveling concrete 3, and foundation beds 11 made of reinforced concrete are installed and fixed in the installation frame 4. An underground tank 17 is installed on the foundation beds 11, and multiple stanchions 20 made of reinforced concrete are erected. Multiple upper beds 27 made of reinforced concrete are installed on the stanchions 20, then the installation hole 1 is refilled.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for installing an underground tank storage device for storing dangerous substances such as gasoline, kerosene, and heavy oil.

[0002]

2. Description of the Related Art Conventionally, when installing an underground tank storage device of this type, an installation hole is dug in the ground where the device is installed, and the bottom of the installation hole is covered with glyme stone, and a temporary frame is placed on the glyme stone. , The steel frame for the foundation, the steel frame for the pillars, and the concrete are placed to form the foundations and pillars, and after the foundations and pillars are hardened, place an underground tank on the foundations. In the installation, the installation hole was backfilled in this state, and then the temporary frame was assembled on the pillar, the reinforcing bar was assembled, and the concrete was placed to form the upper board.

However, in this conventional installation method, since the base, support pillars, and upper board are all formed on-site, the installation work is troublesome and requires a long construction period, and the formation quality of them is high. There was a problem that it could not be kept constant.

In order to solve such a problem, a method of installing an underground tank storage device as disclosed in Japanese Patent Laid-Open No. 59-41570 has been proposed. In this installation method, a reinforced concrete base, pillars, and upper board are manufactured in advance in a factory, and they are transported to the installation site by a truck with an underground tank, and then suspended by a crane and installed according to the construction order. It is like this.

[0005]

However, in this conventional installation method, since the base and the upper board are each made of one thick reinforced concrete plate,
For example, when installing a large-capacity underground tank of 10,000 liters or more, the base and upper board are also large and heavy, which makes it difficult to carry them by truck or suspend them by a crane.

The present invention has been made by paying attention to the problems existing in such a conventional technique, and the purpose thereof is to make it possible to easily and quickly install an underground tank. In addition to being able to maintain the formation quality of the foundation and stanchions, even when installing a large-capacity underground tank of 10,000 liters or more, for example, it is easy to transport the foundation by truck or suspend it with a crane. Another object of the present invention is to provide a method for installing an underground tank storage device, which can be performed at any time and can carry out the installation work without any trouble.

[0007]

To achieve the above object, in the first aspect of the invention, an installation hole is dug in the installation location of the device, and the bottom of the installation hole is covered with glystone and abandoned concrete is poured. Then, install an installation frame on the discarded concrete, install and fix a plurality of reinforced concrete bases in the installation frame, install an underground tank on the base and erect a plurality of reinforced concrete columns, It is characterized in that a plurality of reinforced concrete upper boards are installed on the pillars and the installation holes are backfilled.

The second aspect of the invention is characterized in that the installation frame is formed in a rectangular frame shape, and a guide portion with a slope is provided on the inner side surfaces of the long sides facing each other. Further, in the third invention, an installation hole is dug in an installation location of the device,
Laying down stones on the bottom of the installation hole and placing abandoned concrete, installing an installation frame on the abandoned concrete, installing and fixing a plurality of reinforced concrete bases in the installation frame, and an underground tank on the base. Is installed, a plurality of reinforced concrete columns are erected, the installation holes are backfilled in this state, and then a reinforced concrete upper plate is formed by casting on the columns.

[0009]

According to the first aspect of the present invention, it is not necessary to form the base, the pillars and the upper board on-site, and the installation work of the underground tank can be performed easily and in a short period of time, and the formation quality of them can be kept constant. Can be kept. Moreover, because the base and upper board are divided into multiple parts, even when installing a large-capacity underground tank of 10,000 liters or more, for example, it is easy to transport the base and upper board by trucks or suspend them with a crane. Therefore, the installation work can be performed without any trouble.

According to the second aspect of the invention, when the base is suspended by a crane and installed in the installation frame, the base is installed along the inclined guide portion provided on the inner side surface of the installation frame. It can be positioned and arranged at a predetermined position in the frame, and the installation work can be performed easily and in a short time.

Further, according to the third aspect of the present invention, the formation of the base and the pillars which influence the start time of the next work process is not carried out on site, but only the formation of the upper board which is the last work process is carried out on site. Therefore, the installation work of the underground tank can be performed easily and in a short time. Moreover, because the base is divided into multiple parts, even when installing a large-capacity underground tank of 10,000 liters or more, for example, it is possible to easily transport the base by a truck or suspend it with a crane. After the pillars are erected, the installation holes that have been dug can be backfilled early so that the safety is high and the installation work can be performed without any problems.

[0012]

【Example】

(First Embodiment) Hereinafter, a first embodiment of a method for installing an underground tank storage device embodying the first and second inventions will be described with reference to FIGS.
This will be described in detail with reference to FIG.

Now, in the installation method of this embodiment,
First, as shown in FIG. 2, the installation hole 1 is dug into the ground where the underground tank storage device is installed. This installation hole 1
Is, for example, 50 cm to the front and back and to the left and right of the external dimensions of the device so that the soil is sufficiently filled when backfilling.
The size is set with the above margin, and the depth of the height of the device is set in consideration of the laying height of the curbstone 2 to be described later. Next, the ground stone 2 is laid on the bottom of the installation hole 1. Then, as shown in FIG. 3, abandoned concrete 3 is cast on the upper surface of the green stone 2 to make the surface horizontal.

Thereafter, as shown in FIG. 4, the installation frame 4 is installed on the abandoned concrete 3 and placed horizontally at a predetermined position. As shown in FIGS. 5 to 7, the installation frame 4 has a pair of long side parts 5 made of reinforced concrete at the installation site.
And a pair of short side portions 6 with a plurality of stainless steel bolts 7
And the nut 8 are assembled in a rectangular frame shape.
Further, on the inner side surfaces of the pair of long side portions 5, a guide portion 5a having a slope is formed except for both end portions where the insertion hole 9 for the bolt 7 is formed. Then, in this state, as shown by the chain line in FIG. 4, the waste conmortar 10 having sufficient softness is placed on the waste concrete 3 in the installation frame 4.
Is placed with a predetermined thickness of about 30 mm.

Next, as shown in FIG. 8, two reinforced concrete bases 11 are installed in the installation frame 4 while being suspended by a crane one by one, and the discarded conmortar 1
Place them on top of 0. At this time, the two substrates 11 are brought into close contact with each other and positioned so that no gap is created between the two substrates 11. In this embodiment, since the inclined guide portion 5a is formed on the inner side surface of the long side portion 5 of the installation frame 4, the base 11 can be easily moved into the installation frame 4 along the guide portion 5a. It can be fitted and positioned at a predetermined position, and the installation work can be performed easily and in a short time.

The substrate 11 is manufactured by dividing it into a predetermined size in advance in a factory and is transported to the installation site by a truck. A pair of bases 12 for installing the tank are provided on the upper surface of the base 11, a recess 13 is formed at the center of the upper surface in accordance with the radius of the outer surface of the tank, and a pair of bases 12 are provided on both sides of the upper surface. The anchor bolt 14 is erected. Further, tapered fitting holes 15 for erection of columns are formed at the four corners of the base 11, and a plurality of anchor bolts 16 are erected at the upper opening edges of each fitting hole 15.

After that, as shown in FIG. 9, the underground tank 1
While suspending 7 with a crane, it installs in the recess 13 of the foundation stand 12 on the said foundation 11, attaches the fixing band 18 to the anchor bolt 14 on each foundation stand 12, and tightens the underground tank 17 on the foundation 11. Fix it. The underground tank 17 is formed in a closed cylindrical shape at the factory and is transported to the installation site together with the substrate 11 and the like by a truck. A pair of hatch portions 19 are provided at predetermined intervals on the outer peripheral upper surface of the underground tank 17.

Next, as shown in FIG. 10, a plurality of reinforced concrete columns 20 are erected on the four corners of the upper surface of each base 11 while being suspended by a crane. The support column 20 is manufactured in a factory and is transported to the installation site by a truck together with the base 11 and the like. Further, a tapered fitting portion 21 and a flange portion 23 having a plurality of insertion holes 22 are provided at the lower end of the column 20, and the fitting portion 21 is fitted into the fitting hole 15 on the base 11. , The insertion hole 22 is the base 11
The support column 20 can be fixed on the base 11 by inserting the upper anchor bolt 16 and tightening a nut (not shown). Further, a tapered fitting portion 25 is provided on the upper end of the column 20 via a flange portion 24, and an anchor bolt 26 is provided upright on the upper end of the fitting portion 25.

Thereafter, as shown in FIG. 11, two reinforced concrete upper plates 27 are mounted on the support column 20 while being suspended one by one with a crane. The upper board 27 is manufactured by being divided into a predetermined size in advance in a factory, and is transported by a truck to the installation site together with the board 11 and the like.

Seats 28 are provided at the four corners of the lower surface of the upper plate 27.
The seat portion 28 is formed with a fitting hole 29 that opens downward and a tightening hole 30 that opens upward. Then, the fitting hole 29 is fitted into the fitting portion 25 on the support column 20, and a nut (not shown) is tightened from the tightening hole 30 to the anchor bolt 26 on the support column 20 to fix the upper plate 27 to the support column 20. can do. Further, in the central portion of the upper board 27, the underground tank 17 is provided.
A communication hole 31 to the upper hatch portion 19 is formed, and
A pair of insertion holes 32 for the detection tube are formed near the one side.

Next, as shown in FIGS. 1 and 12, the detection tube 33 is inserted through the insertion hole 32 of the upper board 27 and fixed in contact with the board 11. Further, the protector 34 is fixed to the hatch portion 19 of the underground tank 17 from the communication hole 31 of the upper board 27, and the lid 36 is detachably attached to the upper end of the protector 34 via the seat plate 35. Furthermore, installation frame 4 and base 1
The gap part 37 with 1, the fixing band 18 of the underground tank 17
In the fastening fixing portion 38, the fastening fixing portion 39 of the column 20 with respect to the base 11, the gap portion 40 of the pair of upper plates 27, the fastening hole 30 of the upper plate 27, the insertion hole 32 for the detection tube, and the communication hole 31. The mounting portions 41 of the seat plate 35 are packed with mortar, respectively, and these portions are sealed.

After that, as shown in FIGS. 1 and 12, the oil pipe 42 is connected to the pipe connecting portion (not shown) provided in the hatch portion 19 and the oil meter is attached. Then, as shown by the chain line in FIG. 1, the earth and sand 44 are put into the installation hole 1 to backfill up to the upper surface of the upper plate 27, and the installation work of the device can be completed.

As described above, according to the installation method of the first embodiment, the base 11, the support column 20 and the upper board 27 are manufactured in the factory and are carried into the installation site. Since there is no need to form them, the installation work of the underground tank 17 can be performed easily and in a short period of time, and their formation quality can be kept constant. Further, in the installation method of this embodiment, since the base 11 and the upper board 27 are formed by being divided into a plurality of parts, even if a large-capacity underground tank 17 of 10,000 liters or more is installed, the base 1
1 and the upper board 27 can be easily transported by a truck or hung by a crane, and the installation work can be performed without any trouble. (Second Embodiment) Next, a second embodiment of the method for installing an underground tank storage device embodying the third invention will be described with reference to FIGS.
It will be explained based on.

In the installation method of the second embodiment, as in the installation method of the first embodiment shown in FIGS. 2 to 10, the installation hole 1 is dug down, the gravel stone 2 is laid, and the waste concrete 3 is removed. Installation, installation of installation frame 4, installation of waste conmortar 10, installation of a pair of bases 11, underground tank 17
And the plurality of columns 20 are erected. Unlike the case of the first embodiment, the support column 20 used in the second embodiment is not provided with the flange portion 24, the fitting portion 25 and the anchor bolt 26 at the upper end, and is shown in FIG. As described above, the support bar 50 inside is formed in a state of protruding upward.

Then, in the second embodiment, as shown in FIG. 13, the protector 34 is attached to the hatch portion 19 of the underground tank 17 and the inside of the hatch portion 19 is continued, as shown in FIG. The oil pipe 42 is connected to the pipe connection portion. After that, as shown in FIG. 14, in the gap portion 37 between the installation frame 4 and the base 11, the tightening and fixing part 38 of the fixing band 18 of the underground tank 17, and the tightening and fixing part 39 of the column 20 to the base 11, respectively. Fill with mortar and seal those parts. Further, the detection tube 33 is vertically fixed to a predetermined position on the base 11 with mortar.

In this state, earth and sand are put into the installation hole 1 to backfill. Then, as shown in FIG.
1 is laid, the temporary frame 52 is installed, the reinforcing bars 53 are assembled, and concrete is placed to form the upper plate 27 between the upper ends of the columns 20. Then, as shown in FIG.
After the temporary frame 52 is removed after the upper board 27 is hardened and accessories such as the lid 36 are attached to the protector 34, the installation work of the apparatus can be completed.

As described above, according to the installation method of the second embodiment, the formation of the base 11 and the pillars 20 which influence the start time of the next work process is not carried out on-site, but the last work process is performed. Since only a certain upper board 27 is formed on-site, the underground tank 17 can be installed easily and in a short period of time. Further, in the installation method of this embodiment, since the base 11 is formed by being divided into a plurality of parts, even when a large-capacity underground tank 17 having a capacity of 10,000 liters or more is installed, the base 11 and other trucks are used. It can be easily transported and hung by a crane, and installation work can be performed without any problems.

The present invention is not limited to the configuration of the above-described embodiment. For example, the base 11 and the upper board 27 may be divided into three or more appropriate parts according to the capacity of the underground tank 17. The configuration of each part may be arbitrarily changed and embodied within a range not departing from the gist of the present invention, such as forming or providing the guide part 5a having the slope also on the short side part 6.

[0029]

Since the present invention is constructed as described above, it has the following excellent effects.

According to the first aspect of the present invention, it is not necessary to form the base, the pillars, and the upper board on-site, and the installation work of the underground tank can be carried out easily and in a short period of time. Can be kept constant. Moreover, since the base and upper board are divided into multiple parts, even when installing a large-capacity underground tank of 10,000 liters or more, for example, transportation of the base and upper board by truck or suspension work by a crane is required. It can be done easily and the installation work can be performed without any problems.

According to the second invention, when the base is suspended by the crane and installed in the installation frame, the base is guided along the inclined guide portion provided on the inner side surface of the installation frame. Moreover, it can be positioned and arranged at a predetermined position in the installation frame, and the installation work can be performed easily and in a short time.

Further, according to the third aspect of the present invention, the formation of the foundation and the pillars that affect the start time of the next work process is not performed on site, but only the upper work, which is the last work process, is performed on site. Since it is carried out in, it is possible to install the underground tank easily and in a short period of time. Moreover, since the base is divided into a plurality of parts, even when installing a large-capacity underground tank of 10,000 liters or more, for example, it is possible to easily transport the base by a truck or suspend it with a crane, Since the installation hole can be immediately backfilled after the pillar is erected, the period of leaving the hole uncovered is short, the safety is excellent, and the installation work can be performed without any trouble.

[Brief description of drawings]

FIG. 1 is a sectional view of a completed state showing a first embodiment of a method for installing an underground tank storage device embodying the present invention.

FIG. 2 is a cross-sectional view showing a step of digging an installation hole and a step of laying ground stone in the installation method.

FIG. 3 is a cross-sectional view showing a step of placing waste concrete.

FIG. 4 is a perspective view showing an installation process of an installation frame.

FIG. 5 is an exploded perspective view of the installation frame.

6 is an enlarged cross-sectional view taken along the line AA of FIG.

7 is an enlarged cross-sectional view taken along the line BB of FIG.

FIG. 8 is a perspective view showing a base plate installation process.

FIG. 9 is a perspective view showing an installation process of an underground tank.

FIG. 10 is a perspective view showing a standing process of the support column.

FIG. 11 is a perspective view showing an installation process of the upper board.

FIG. 12 is a perspective view showing a process of assembling related members and a process of filling mortar in a gap and the like.

FIG. 13 is a perspective view showing a second embodiment of the method for installing the underground tank storage device of the present invention, and particularly showing the upright process of the columns and the assembling process of the protector etc. after the underground tank is installed.

FIG. 14 is a perspective view showing a step of filling mortar into a gap or the like and a step of forming an upper board on a column.

FIG. 15 is a perspective view showing a completed state.

[Explanation of symbols]

1 ... Installation hole, 2 ... Green stone, 3 ... Discarded concrete, 4 ...
Installation frame, 5 ... long side part, 5a ... gradient guide part, 11
… Base, 17… underground tank, 20… pillars, 27… upper board.

Claims (3)

[Claims] 1. An installation hole (1) is dug at an installation location of the device,
At the bottom of the installation hole (1), lay the green stone (2) and cast abandoned concrete (3), install the installation frame (4) on the abandoned concrete (3), and inside the installation frame (4). A plurality of reinforced concrete bases (11) are installed and fixed to the base, an underground tank (17) is installed on the bases (11), and a plurality of reinforced concrete columns (20) are erected, and the columns (20) are installed. A method for installing an underground tank storage device, characterized in that a plurality of reinforced concrete upper boards (27) are installed on the top and the installation holes (1) are backfilled. 2. The installation frame (4) is formed in a square frame shape,
The installation method for an underground tank storage device according to claim 1, characterized in that a guide portion (5a) having a slope is provided on the inner surface of the facing long side portion (5). 3. An installation hole (1) is dug at an installation location of the device,
At the bottom of the installation hole (1), lay the green stone (2) and cast abandoned concrete (3), install the installation frame (4) on the abandoned concrete (3), and inside the installation frame (4). A plurality of reinforced concrete bases (11) are installed and fixed to the base, an underground tank (17) is installed on the bases (11), and a plurality of reinforced concrete columns (20) are erected, and in this state the installation holes A method for installing an underground tank storage device, characterized in that, after backfilling (1), an upper plate (27) made of reinforced concrete is formed by casting on the pillar (20).