JP2003074075A - Side wall of tank - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a side wall of a tank capable of layering and storing a large number of outside panels or inside panels for constituting the side wall in a small space before executing the tank. SOLUTION: The divided panels 12" and 13" are held at a prescribed interval, and nuts 16 are respectively fixed by welding in a large number of places to a concrete forming surface of the divided panels 12" and 13". Anchor bolts 17 are threadedly engaged with the respective nuts 16, and the divided panels 12" and 13" are held at a prescribed interval. Concrete is filled in a space formed of the divided panels 12" and 13" to construct the side wall 5. Before constructing the side wall 5, the divided panels 12" and 13" can be layered and stored in large numbers in the small space in a state of removing the anchor bolts 17 from the nuts 16.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a side wall of a tank, and more specifically, it can store a large number of divided panels for forming a side wall in a small occupied space in a pre-construction stage.
The present invention relates to a side wall of a tank that can be easily transported.

[0002]

2. Description of the Related Art The applicant of the present application holds an outer panel and an inner panel at predetermined intervals by means of a spacing tool, and vertically installs a plurality of anchors on opposing concrete molding surfaces of both panels. We propose a tank with sidewalls filled with concrete. The anchor provided on the concrete molding surface of the side wall has a structure in which the tip portion of the stud bolt is connected to the molding surface of the panel by welding.

[0003]

In the above-mentioned conventional structure for welding stud bolts, a large number of stud bolts must be pre-welded to the outer split panel and the inner split panel. Therefore, when the divided panels are temporarily stored in a warehouse or the like, if a large number of the divided panels are stacked, the stud bolts occupy a large space and the inventory cannot be increased. In addition, since it is bulky, the number of items to be transported is small, and it is impossible to reduce the construction cost.

An object of the present invention is to solve the problems existing in the above-mentioned conventional techniques, and to reduce the occupied space in the storage state of the outer split panel or the inner split panel at the stage before construction, so that transportation can be facilitated. It is to provide a side wall of a tank that can be easily performed.

[0005]

In order to solve the above-mentioned problems, the invention according to claim 1 has a plurality of concrete molding surfaces facing each other of the outer panel and the inner panel which also have the function of the concrete formwork. Set up anchors respectively,
While holding the both panels at a predetermined interval by a spacing holder, in a tank in which concrete is filled between both panels to form a side wall, a connecting hole for connecting an anchor to the concrete forming surfaces of the both panels facing each other is formed. The gist is that it is provided and an anchor is connected to the connecting hole.

A second aspect of the present invention is characterized in that, in the first aspect, a nut is welded to the molding surfaces of the both panels, and an anchor bolt as an anchor is screwed into a screw hole of the nut. .

According to a third aspect of the present invention, in the first aspect, the connecting hole is a screw hole formed in both panels, and a screw portion of an anchor bolt as an anchor is screwed into the screw hole. That is the main point.

According to a fourth aspect of the present invention, in the first aspect, the connecting hole is a through hole formed in both panels, and an anchor bolt as an anchor is penetrated through the through hole. The gist of the invention is that it is fixed to the panel by tightening it with a head and a nut screwed into the screw part.

According to a fifth aspect of the present invention, in any one of the second to fourth aspects, nuts are welded to the molding surfaces of the panels facing each other near the outer peripheral edges so as to be located at the same coordinates. The gist of the invention is that the screw holes of both nuts are screwed with right and left screw portions formed at both ends of an anchor bolt having a function of maintaining a gap and a function as an anchor.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment in which the present invention is embodied in an underground tank for storing fire extinguishing water is shown in FIGS.
It will be described with reference to FIG.

As shown in FIG. 1, an underground tank 1 as a tank is installed on a base concrete 2 which is placed at the bottom of a hole dug into the ground (not shown). Underground tank 1
The tank body 3 includes a bottom plate 4, side walls 5 and a ceiling wall 6. A cylindrical side wall 5 is arranged on a steel bottom plate 4, and the bottom plate 4 and the side wall 5 are mounted and fixed on the base concrete 2 via anchor bolts 7. The upper surface of the bottom plate 4 is covered with the first lining material 8. The first lining material 8 is made of a corrosion-resistant plate material (stainless steel plate in the present embodiment), and reduces the corrosion of the bottom plate 4 by the water 9 for extinguishing the fire as a stored substance.

The side wall 5 is mainly a concrete base material 11 having a cylindrical shape, a steel panel 12 provided on the inner surface of the concrete base material 11, and a steel panel provided on the outer surface of the concrete base material 11. It consists of 13. The panels 12 and 13 are strong enough to be used as concrete formwork.

As shown in FIG. 3, the concentric cylindrical panels 12 and 13 are each divided into four divided panels 1.
It is composed of 2'and 13 '. The circumferential start and end of the divided panels 12 ', 13' are butted against each other, and the butted parts are connected by welded portions 19,20. As shown in FIGS. 3 and 4, a large number of nuts 16 are welded on the opposing molding surfaces of the split panels 12 'and 13'.
(See FIG. 1). Each nut 16
Anchor bolts 17 each having a head portion 17a and a screw portion 17b are screwed into each of them.

As shown in FIG. 4, the nuts 16 welded to the molding surface of the split panel 12 'are arranged at predetermined intervals in the height direction and the circumferential direction. Also, split panel 1
The nuts 16 welded to the inner surface of the 3'also are arranged at predetermined intervals in the height direction and the circumferential direction so as to be staggered with the nuts 16 on the split panel 12 'side.

The inner surface of the cylindrical panel 12 is covered with a second lining material 14. Second lining material 14
Is made of a panel having corrosion resistance (a stainless plate in this embodiment), and reduces the corrosion of the panel 12 by the water 9 for extinguishing fire. Also, the first lining material 8 and the second
The third lining material 18 is welded and fixed to the lining material 14. The third lining material 18 is made of corrosion resistant material (stainless steel plate in this embodiment), and reduces the corrosion of the joint between the bottom plate 4 and the side wall 5 by the water 9 for extinguishing fire.

An anticorrosive coating 15 is applied to the outer surface of the panel 13. The anticorrosion coating 15 is made of a material having corrosion resistance and insulation (for example, urethane-based paint or epoxy-based paint) to reduce corrosion of the panel 13 due to rainwater or groundwater that has penetrated into the ground. The panel 13 is prevented from electrolytic corrosion (stray current corrosion).

The steel ceiling wall 6 is formed in a substantially dome shape, and is welded and fixed to the upper edge of the side wall 5. The annular covering plate 21 is integrally formed on the outer periphery of the ceiling wall 6, and a flange portion 22 is formed on the outer peripheral edge thereof so as to be bent downward. When the ceiling wall 6 is welded and fixed to the upper edge of the side wall 5, the cover plate 21 is joined to the upper end of the side wall 5. Further, in this state, the collar portion 22 of the cover plate 21 hangs down on the outer periphery of the panel 13 to prevent rainwater and the like flowing down from the outer surface of the ceiling wall 6 from entering the concrete base material 11. There is.

Next, a method of manufacturing the underground tank 1 configured as described above will be described. First, a plurality of anchor bolts 7 (only two of which are shown in FIG. 1) are erected on a reinforcing bar (not shown). Then, concrete is poured into a mold (not shown) arranged so as to surround the reinforcing bars to form the base concrete 2.

Next, the anchor bolt 7 projecting from the upper surface of the base concrete 2 is inserted into the insertion hole 4a of the bottom plate 4 to place the bottom plate 4 on the base concrete 2. Then, the anchor bolt 7 is tightened with the nut 7a, and the bottom plate 4 is placed and fixed on the base concrete 2.
The upper surface of the bottom plate 4 is coated with the first lining material 8 in advance.

As shown in FIG. 5, divided panels 12 ', 13
A large number of ‘’ s are stocked in a stacked state, and the stacked state is transported by a truck or the like. The split panels 12 'and 13' are used for the nut 1 at the tank construction site.
With the anchor bolts 17 screwed onto 6, the welding portions 19 and 20 are welded in a concentric cylindrical shape.

Next, the lower ends of the cylindrical panels 12 and 13 are fixed to the bottom plate 4 by welding. As shown in FIG. 1, a right screw portion 17b and a left screw portion 17c at both ends of an anchor bolt 17 that also functions as a spacer (spacer) for the nuts 16 and 16 located near the upper ends of both panels 12 and 13. Are respectively screwed into each other, and the distance between the panels 12 and 13 is maintained at a predetermined distance. Panels 12 and 13 in this state
Is used as a frame to fill the concrete between the panels 12 and 13 and harden it to construct the side wall 5 with the panels 12 and 13 and the anchor bolts 17.

Then, the second lining material 14 is bonded to the inner surface of the panel 12. Further, after the ceiling wall 6 is welded and fixed to the upper edge of the side wall 5, the outer surface of the side wall 5 is subjected to anticorrosion coating 15
Give. Finally, the outer periphery of the side wall 5 is backfilled with earth and sand.

Next, the underground tank 1 constructed as described above.
The action of will be described. The side wall 5 of the underground tank 1 has a cylindrical panel 12 equipped with anchor bolts 17,
The cylindrical panel 13 equipped with the anchor bolts 17 is disposed so as to face each other so that the side surfaces equipped with the anchor bolts 17 face each other, and the panel 12 is used as an inner mold and the panel 13 is used as an outer mold between the panels 12, 13. It is formed by pouring concrete. That is, the panels 12, 13
Does not need to be removed because it serves as a concrete formwork and, moreover, after the concrete is cast, it constitutes the side wall 5 together with the concrete base material 11. Also, the anchor bolt 17
Serves as a reinforcing bar for the concrete base material 11.

Therefore, according to this embodiment, the following effects can be obtained. (1) In the above embodiment, the nut 16 is fixed to the concrete molding surfaces of the split panels 12 'and 13' by welding, and the anchor bolt 17 is screwed onto the nut 16 in a later step. Therefore, the divided panels 12 ', 13
When stocking ′ ′ alone, it is possible to stack and store a large number of them in a small space as shown in FIG. Further, the transportation work can be easily performed, and at the construction site of the tank, the anchor bolt 17 can be easily attached only by screwing the anchor bolt 17 onto the nut 16, and the side wall 5 can be easily constructed. be able to.

(2) In this embodiment, since the concentric cylindrical panels 12 and 13 also serve as a mold for molding the concrete base material 11, it is not necessary to provide a special mold, and the concrete is not required. It is not necessary to remove the formwork even after placing. Therefore, it is possible to omit the mold installation work and the mold removal work, the workability at the time of manufacturing the tank is improved, and the manufacturing cost of the underground tank 1 can be reduced.

(3) In this embodiment, the panels 12 and 13 are
Since the nuts 16 and the anchor bolts 17 of FIG. 6 serve as reinforcing bars of the concrete base material 11, there is no need to install reinforcing bars specially, so that the reinforcing work can be omitted, and as a result, at the time of tank manufacturing. The workability can be improved and the manufacturing cost of the underground tank 1 can be reduced.

(4) In this embodiment, the panels 12 and 13 are
Since a plurality of anchor bolts 17 are provided at predetermined intervals,
The strength of the side wall 5 is stable, and the earthquake resistance of the underground tank 1 can be improved.

(5) In the present embodiment, the panel 12 constitutes a cylindrical inner formwork, the panel 13 constitutes a cylindrical outer formwork, and concrete is placed between both formworks. Since the seamless cylindrical concrete base material 11 is formed, the fire extinguishing water 9 can be prevented from leaking to the outside, and the intrusion of water or the like from the outside can be reduced.

The above embodiment can be embodied as follows. -Recesses or through holes 12 for setting the welding position of the nut 16 on the split panels 12 ', 13' as shown in FIG.
a, 13a are formed and the recesses or through holes 12a, 13a are formed.
The nut 16 may be welded to a position corresponding to.

As shown in FIG. 7, the divided panels 12 ′,
13 'is provided with screw holes 12b and 13b as connecting holes, and the screw portion 1 formed at the tip of the anchor bolt 17 is formed.
7b may be screwed together. The anchor bolt 17 is formed with a step portion 17d that regulates the screwing depth.

As shown in FIG. 8, the divided panels 12 ′,
Through holes 12a, 13a as connecting holes are formed in 13 ', and the anchor bolt 17 is penetrated through the holes to form the nut 2
5 may be screwed into the threaded portion 17b of the anchor bolt 17.

As shown in FIG. 9, the divided panels 12 ′,
Anchor bolt 17 is penetratingly supported in through holes 12a and 13a serving as connecting holes provided in 13 ', and a sleeve 27 for holding a gap is fitted to an outer peripheral surface of anchor bolt 17,
The split panels 12 ′ and 13 ′ may be fastened and fixed to the sleeve 27 by the nut 26.

As shown in FIG. 10, through-holes 12a, 13a or screw holes 12b, 13b are formed in the flat panel-shaped split panels 12 ', 13', and these are curved-formed into a circular arc shape by a molding device. May be.

The panel 12 is formed by bending a single plate into a cylindrical shape.
The (inner frame) and the panel 13 (outer frame) may be formed.・ Nut 16 on only one of panels 12 and 13
Also, the anchor bolt 17 may be provided.

The tank may be embodied as a rectangular tank instead of a circular tank. In this case, a flat panel is used. It may also be embodied as a polygonal tank. The technical idea understood from the above embodiment will be described below.

(Technical idea 1) A plurality of anchors are respectively erected on the concrete forming surfaces of the outer panel and the inner panel, which also have the function of the concrete formwork, facing each other, and the both panels are spaced at predetermined intervals by a spacing tool. A connection hole for holding and for forming the outer panel or inner panel used in a tank having a side wall formed by filling concrete between both panels into a plurality of parts, and connecting the anchor to the concrete molding surface of the divided panel. A division panel used for the side wall of the tank that is provided with.

(Technical idea 2) In technical idea 1, a nut having a screw hole as a connecting hole is welded to the molding surface of the divided panel, and an anchor bolt is screwed into the screw hole. Split panel used on the side wall of the existing tank.

(Technical idea 3) In the technical idea 1, the connecting hole is a screw hole formed in the divided panel itself,
A split panel used for a side wall of a tank in which a screw portion of an anchor bolt as an anchor is screwed into the screw hole.

(Technical idea 4) In the technical idea 1, the connecting hole is a through hole formed in the divided panel itself,
A division panel used for a side wall of a tank, in which an anchor bolt as an anchor is tightened and fixed by a nut in the through hole.

[0040]

As described above in detail, according to the present invention, it is possible to reduce the occupied space in the storage state of the divided panel of the outer panel or the inner panel before the construction, and the transportation work can be easily performed. .

[Brief description of drawings]

FIG. 1 is an enlarged sectional view of a side wall embodying the present invention.

FIG. 2 is a semi-longitudinal sectional view showing the entire tank.

FIG. 3 is a horizontal sectional view of the tank.

FIG. 4 is an enlarged perspective view showing a panel forming a side wall.

FIG. 5 is a front view showing a state where the panels are stocked.

FIG. 6 is a partial cross-sectional view showing another example of the present invention.

FIG. 7 is a partial cross-sectional view showing another example of the present invention.

FIG. 8 is a partial cross-sectional view showing another example of the present invention.

FIG. 9 is a partial sectional view showing another example of the present invention.

FIG. 10 is a perspective view of a panel of another example of the present invention before molding.

[Explanation of symbols]

5 ... Side wall, 12, 13 ... Panel, 12 ', 13' ... Divided panel, 12a, 13a ... Through hole as connecting hole, 12
b, 13b ... screw holes as connection holes, 16 ... nuts, 1
6a ... screw holes as connecting holes, 17 ... anchor bolts as anchors.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Hiroshi Ogawa             6-27 Kashima-cho, Gifu City, Gifu Prefecture Stock Association             Inside the company Ichikawa construction company F-term (reference) 2D047 AB02 AB08                 3E070 AA02 AA13 AB02 DA01 DA03                       KA01 KA09 KB02 KB06 KC01                       MA01 MA04 PA20 QA04 UA07

Claims (5)

[Claims] 1. A plurality of anchors are respectively erected on opposing concrete forming surfaces of an outer panel and an inner panel that also have the function of a concrete formwork, and both panels are held at predetermined intervals by a space holder. A tank having a side wall formed by filling concrete between both panels, wherein a side wall of the tank is provided with a connecting hole for connecting an anchor to the facing concrete forming surface of the both panels, and the anchor is connected to the connecting hole. 2. The side wall of the tank according to claim 1, wherein nuts are welded to the molding surfaces of the both panels, and anchor bolts as anchors are screwed into screw holes of the nuts. 3. The side wall of the tank according to claim 1, wherein the connecting hole is a screw hole formed in both panels, and a screw portion of an anchor bolt as an anchor is screwed into the screw hole. 4. The connecting hole according to claim 1, wherein the connecting hole is a through hole formed in both panels, and an anchor bolt as an anchor is penetrated through the through hole and is screwed to a head portion and a screw portion of the anchor bolt. The side wall of the tank that is clamped and fixed to the panel with the fitted nuts. 5. The method according to any one of claims 2 to 4,
Nuts are welded on opposite molding surfaces near the outer peripheral edges of both panels so as to be located at the same coordinates, and screw holes of both nuts are formed at both ends of an anchor bolt having a function of maintaining a gap and a function of an anchor. The side wall of the tank where the right and left threads are screwed together.