JP2662119B2 - Installation method of underground tank storage device - Google Patents

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 this kind of underground tank storage device, an installation hole is dug in the ground at a place where the device is installed, a gemstone is laid at the bottom of the installation hole, and a temporary frame is placed on the gemstone. After the installation of the steel frame for the base, the installation of the steel frame for the base, the installation of the steel frame for the support, and the casting of concrete, the base and the support are formed, and after the base and the support are hardened, the underground tank is mounted on the base. In this state, the installation holes were backfilled in this state, and after that, a temporary frame was assembled on the support, the reinforcing bars were assembled, and concrete was cast to form an upper panel.

However, in the conventional installation method, since the formation of the base, the support, and the upper panel are all performed by on-site construction, the installation work is troublesome and requires a long construction period, and the formation quality thereof is reduced. 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, for example, as disclosed in Japanese Patent Laid-Open No. 59-41570, has been conventionally proposed. In this installation method, reinforced concrete bases, columns, and upper panels are manufactured in advance at the factory, transported to the installation site by truck together with the underground tank, and installed while hanging with a crane according to the construction order. It has become.

[0005]

However, in this conventional installation method, since the base and the upper plate are each made of one thick reinforced concrete plate,
For example, when a large-capacity underground tank of 10,000 liters or more is installed, there is a problem that the base and the upper panel are also large and heavy, making it difficult to carry by truck or suspend by a crane.

[0006] The present invention has been made in view of the problems existing in such prior art, and it is an object of the present invention to easily and quickly install an underground tank. In addition to being able to maintain the formation quality of the base and the pillars at a constant level, even when installing a large-capacity underground tank of, for example, 10,000 liters or more, it is easy to transport the base and other trucks and suspend the work with a crane. It is an object of the present invention to provide a method for installing an underground tank storage device, which can be carried out without difficulty and can perform the installation work without any trouble.

[0007]

In order to achieve the above object, in the first invention, an installation hole is dug in a place where the apparatus is installed, and a grindstone is laid at the bottom of the installation hole, and a discarded concrete is poured. Then, an installation frame is installed on the discarded concrete, a plurality of reinforced concrete bases are installed and fixed in the installation frame, an underground tank is installed on the base, and a plurality of reinforced concrete columns are erected. It is characterized in that a plurality of reinforced concrete upper plates are installed on a support, and the installation holes are filled back.

According to a second aspect of the present invention, the installation frame is formed in a rectangular frame shape, and a sloped guide portion is provided on an inner surface of a long side portion facing the installation frame. Furthermore, in the third invention, an installation hole is dug in the installation location of the device,
Laying grindstone at the bottom of the installation hole and casting discarded concrete, installing an installation frame on the discarded concrete, installing and fixing a plurality of reinforced concrete bases in the installation frame, and placing an underground tank on the basement And a plurality of reinforced concrete columns are erected, the installation holes are backfilled in this state, and then a reinforced concrete upper wall is formed on the columns.

[0009]

According to the first aspect of the present invention, it is not necessary to form the base, the support and the upper panel by on-site construction, the installation work of the underground tank can be performed easily and in a short time, and their formation quality can be kept constant. Can be kept. In addition, since the base and the upper panel are divided into a plurality of parts, even when installing a large-capacity underground tank of, for example, 10,000 liters or more, it is easy to transport the base and the upper panel by truck or to suspend by a crane. The installation work can be performed without any trouble.

In the second invention, when the base is hung by a crane and installed in the installation frame, the base is installed along a sloped guide portion provided on the inner 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, in the third invention, the formation of the base and the supporting columns which affect the start time of the next work process is not performed in the on-site construction, and only the formation of the upper work, which is the last work process, is performed in the on-site construction. Therefore, the installation work of the underground tank can be performed easily and in a short time. In addition, since the base is divided into a plurality of parts, even when installing a large-capacity underground tank of, for example, 10,000 liters or more, the work of transporting the base or the like by truck or hanging it by a crane can be easily performed. After the pillars have been erected, the drilled installation holes can be refilled at an early stage, so that the safety is high and the installation work can be performed without any trouble.

[0012]

【Example】

(First Embodiment) Hereinafter, a first embodiment of an installation method of 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, an installation hole 1 is dug down in the ground where the underground tank storage device is installed. This installation hole 1
Is, for example, 50 cm each before and after and outside the outer dimensions of the device so that the earth and sand are sufficiently clogged when backfilling
The size is set to have the above margin, and the height of the apparatus is set to a depth that allows for the laying height and the like of the graffite 2 described later. Next, the gemstone 2 is laid on the bottom of the installation hole 1. Then, as shown in FIG. 3, a discarded concrete 3 is cast on the upper surface of the grindstone 2 to level the surface.

Thereafter, as shown in FIG. 4, an installation frame 4 is installed on the waste concrete 3 and is horizontally arranged at a predetermined position. As shown in FIGS. 5 to 7, the installation frame 4 has a pair of long sides 5 made of reinforced concrete at the installation site.
And a pair of short sides 6 by a plurality of stainless steel bolts 7
And a nut 8 to form a square frame.
A sloped guide portion 5a is formed on the inner side surface of the pair of long side portions 5 except for both end portions where the insertion holes 9 for the bolts 7 are formed. Then, in this state, as shown by a chain line in FIG. 4, the disposal concrete mortar 10 having sufficient softness is placed on the disposal concrete 3 in the installation frame 4.
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 one by one by a crane,
It is placed close to 0. At this time, the two substrates 11 are positioned in close contact with each other so that no gap is formed between the two substrates 11. In this embodiment, since the guide portion 5a having a slope is formed on the inner surface of the long side portion 5 of the installation frame 4, the base 11 can be easily inserted 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 base 11 is divided into predetermined sizes in a factory and manufactured, and transported by truck to an installation site. A pair of tank mounting bases 12 is provided on the upper surface of the base 11, and a recess 13 is formed at the center of the upper surface to match the radius of the outer surface of the tank, and a pair of tanks is formed on both sides of the upper surface. An anchor bolt 14 is provided upright. Further, tapered fitting holes 15 for supporting columns are formed at the four corners of the base 11, and a plurality of anchor bolts 16 are provided upright at the upper opening edge of each fitting hole 15.

Thereafter, as shown in FIG.
7 is suspended in a recess 13 of the base 12 on the base 11 while being suspended by a crane, and a fixing band 18 is attached to an anchor bolt 14 on each base 12, and the underground tank 17 is tightened on the base 11. Fix it. The underground tank 17 is formed in a closed cylindrical shape in a factory, and transported by truck to the installation site together with the base 11 and the like. A pair of hatch portions 19 are provided on the outer peripheral upper surface of the underground tank 17 at predetermined intervals.

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

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

At four corners of the lower surface of the upper panel 27, seats 28 are provided.
Each seat portion 28 is formed with a tapered fitting hole 29 that opens downward and a fastening hole 30 that opens upward so as to communicate with each other. Then, the fitting hole 29 is fitted to the fitting portion 25 on the support 20, and the upper plate 27 is fixed to the support 20 by fastening a nut (not shown) to the anchor bolt 26 on the support 20 from the fastening hole 30. can do. Furthermore, the underground tank 17 is located at the center of the upper panel 27.
A communication hole 31 to the upper hatch 19 is formed,
A pair of detection tube insertion holes 32 is formed near one side.

Next, as shown in FIG. 1 and FIG. 12, a detection tube 33 is inserted through the insertion hole 32 of the upper panel 27, and is fixed to the base 11 in contact therewith. Further, a protector 34 is fixed to the hatch 19 of the underground tank 17 from the communication hole 31 of the upper panel 27, and a lid 36 is detachably attached to the upper end of the protector 34 via a seat plate 35. In addition, installation frame 4 and base 1
1 and the fixed band 18 of the underground tank 17
, The fastening portion 39 of the column 20 with respect to the base 11, the gap 40 between the pair of upper panels 27, the fastening holes 30 of the upper panel 27, the insertion holes 32 for the detection tubes, and the communication holes 31. Each of the mounting portions 41 of the seat plate 35 is filled with mortar, and these portions are sealed.

Thereafter, as shown in FIG. 1 and FIG. 12, an oil pipe 42 is connected and an oil meter is attached to a pipe connection (not shown) provided in the hatch 19. Then, as shown by a chain line in FIG. 1, earth and sand 44 are put into the installation hole 1 and backfilled to the upper surface of the upper panel 27, thereby completing the installation work of the apparatus.

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

In the installation method according to the second embodiment, as in the installation method according to the first embodiment shown in FIGS. 2 to 10, the installation hole 1 is dug down, the grinder 2 is laid, and the waste concrete 3 is removed. Casting, installation of installation frame 4, installation of dumping mortar 10, installation of a pair of bases 11, underground tank 17
Is installed, and the plurality of columns 20 are erected. In addition, unlike the case of the first embodiment, the 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. Thus, the inner supporting rebar 50 is formed in a state of protruding upward.

In the second embodiment, following the erecting operation of the support column 20, a protector 34 is attached to the hatch 19 of the underground tank 17 as shown in FIG. The oil pipe 42 is connected to the pipe connection. Thereafter, as shown in FIG. 14, a gap portion 37 between the installation frame 4 and the base 11, a fastening portion 38 of the fixing band 18 of the underground tank 17, and a fastening portion 39 of the support 20 to the base 11 are respectively provided. Pack the mortar and seal the parts. Further, the detection tube 33 is erected at a predetermined position on the base 11 by mortar.

In this state, earth and sand are put into the installation hole 1 and backfilling is performed. Thereafter, as shown in FIG.
1, installation of the temporary frame 52, installation of the reinforcing bar 53, and casting of concrete, thereby forming the upper panel 27 between the upper ends of the columns 20. Then, as shown in FIG.
After the hardening of the upper panel 27, the temporary frame 52 is removed, and the attachment such as the attachment of the cover 36 to the protector 34 is performed, whereby 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 columns 20 which affect the start time of the next operation process is not performed in the on-site construction, but in the last operation process. Since only the formation of a certain upper panel 27 is performed on site, installation work of the underground tank 17 can be performed easily and in a short time. Further, in the installation method of this embodiment, since the base 11 is divided into a plurality of parts, even when a large-capacity underground tank 17 of, for example, 10,000 liters or more is installed, the base 11 or the like uses a truck. It can be easily transported and suspended by a crane, and the installation work can be performed without any trouble.

The present invention is not limited to the configuration of the above-described embodiment. For example, the base 11 and the upper panel 27 are divided into three or more appropriate numbers according to the capacity of the underground tank 17. The configuration of each part may be arbitrarily changed and embodied without departing from the spirit of the present invention, such as forming or providing the inclined guide part 5a also on the short side part 6.

[0029]

Since the present invention is configured 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 support, and the upper panel by on-site construction, so that the installation work of the underground tank can be performed easily and in a short time, and the formation quality thereof can be improved. Can be kept constant. Moreover, since the base and the upper panel are divided into a plurality of parts, even when a large-capacity underground tank of, for example, 10,000 liters or more is installed, the work of transporting the base and the upper panel by truck or hanging work by a crane is required. It can be easily performed, and the installation work can be performed without any trouble.

According to the second invention, when the base is suspended by the crane and installed in the installation frame, the base is moved along the inclined guide portion provided on the inner surface of the installation frame. 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 base and the pillars which affect the start time of the next work process is not performed by on-site construction, and only the formation of the upper work, which is the last work process, is performed by on-site construction. Therefore, installation work of the underground tank can be performed easily and in a short time. Moreover, since the base is divided into a plurality of parts, even when installing a large-capacity underground tank of, for example, 10,000 liters or more, the base can be easily transported by truck or suspended by a crane, Since the installation hole can be immediately refilled after the support column is erected, the period during which the hole is left open is short, the safety is excellent, and the installation work can be performed without any trouble.

[Brief description of the drawings]

FIG. 1 is a sectional view of a completed state showing a first embodiment of an installation method of 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 grime stone in the installation method.

FIG. 3 is a cross-sectional view showing a process of placing discarded concrete.

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

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

FIG. 6 is an enlarged sectional view taken along line AA of FIG. 5;

FIG. 7 is an enlarged sectional view taken along line BB of FIG. 5;

FIG. 8 is a perspective view showing a step of installing a base.

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

FIG. 10 is a perspective view showing a process of erecting a support.

FIG. 11 is a perspective view showing an upper panel installation process.

FIG. 12 is a perspective view showing an assembling step of a related member and a step of mortar filling a gap or the like.

FIG. 13 is a perspective view showing a second embodiment of the installation method of the underground tank storage device according to the present invention, and particularly showing an upright pillar installation process and an assembling process of a protector and the like after installation of the underground tank.

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

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

[Explanation of symbols]

1 ... installation hole, 2 ... grindstone, 3 ... discarded concrete, 4 ...
Installation frame, 5 ... long side, 5a ... sloped guide, 11
... base, 17 ... underground tank, 20 ... prop, 27 ... upper panel.

Claims (3)

(57) [Claims] 1. An installation hole (1) is dug in an installation place of the device,
Laying stone (2) at the bottom of the installation hole (1) and casting discarded concrete (3), installing an installation frame (4) on the discarded concrete (3), and inside the installation frame (4) A plurality of reinforced concrete bases (11) are installed and fixed on the base, and an underground tank (17) is installed on the base (11), and a plurality of reinforced concrete columns (20) are erected. A method of installing an underground tank storage device, wherein a plurality of reinforced concrete upper panels (27) are installed thereon, and the installation holes (1) are backfilled. 2. The installation frame (4) is formed in a square frame shape.
2. The installation method for an underground tank storage device according to claim 1, wherein a sloped guide portion (5a) is provided on an inner surface of the opposed long side portion (5). 3. An installation hole (1) is dug in an installation place of the device,
Laying stone (2) at the bottom of the installation hole (1) and casting discarded concrete (3), installing an installation frame (4) on the discarded concrete (3), and inside the installation frame (4) A plurality of reinforced concrete bases (11) are installed and fixed on the base, an underground tank (17) is installed on the base (11), and a plurality of reinforced concrete columns (20) are erected. (1) After backfilling, a method of installing an underground tank storage device, wherein an upper plate (27) made of reinforced concrete is cast and formed on the column (20).