JPH08337293A - Concrete storage tank - Google Patents

Abstract

PURPOSE: To shorten the construction period on the spot by building up a concrete storage tank by connecting pre-cast segments which are formed by uniformly dividing the peripheral wall in the circumferential direction and the vertical direction. CONSTITUTION: A concrete storage tank is constituted of a base 11, a peripheral wall 12 which is mounted and fixed on the base 11, and a lid 13 which closes the top opening of the peripheral wall 12. The base 11 is constructed on the spot, on a rubble 15 on the bottom of a drilled hole 14, and the peripheral wall 12 is constituted by polymerizing a plurality of annular bodies 21. Then, those annular bodies 21 are constituted by connecting a plurality of arc-shaped pre-cast side wall segments 22. On the internal peripheral surface on both ends of each side wall segment 22, a first fitting part 25 is respectively provided so as to be indent, and a first connecting box 26 made of a metal is buried and fitted in the first fitting part 25, and they are clamped with bolts and nuts. In addition, a pair of second connecting boxes 43 are buried at the center of each side wall segment 22, and a fixing rod at both ends of which a thread is carved is inserted in an insertion hole 42, and respective annular bodies 21 being adjacent in the vertical direction are fixed with nuts.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete storage tank used for, for example, a water tank or a septic tank.

[0002]

2. Description of the Related Art Conventionally, in order to install a large-sized concrete storage tank, a formwork is used on site, the reinforcement is arranged, and concrete is placed in sequence.

[0003]

Therefore, in the concrete storage tank by the conventional method, many molds are required, the assembling and removing of the molds are complicated, and it takes a long time to cure the concrete, There was a problem that the construction period would be long.

In order to solve this problem, a precast technique for manufacturing parts in a factory in advance and assembling each part on site has been proposed, for example, in Japanese Patent Publication No. 3-21710.

[0005] This publication discloses a tank composed of one part forming the bottom of the tank and a plurality of parts forming the peripheral wall. Peripheral wall parts are, so to speak, "barrels"
As shown in FIG. A screw rod is interposed between the peripheral wall parts, and nuts are fastened to both ends of the screw rod, whereby the peripheral wall parts are connected and fixed.

However, the tank of this publication has the following problems. (1) Since the fastening position of the nut is arranged at the center of the peripheral wall part in the width direction, it is necessary to pass the screw rod inside the peripheral wall, which is troublesome.

(2) It is necessary to form a through hole for a screw rod inside the peripheral wall part, which is troublesome to manufacture. (3) A long curved rod is required,
Parts cost goes up.

The present invention has been made by paying attention to the problems existing in such conventional techniques. Its main purpose is to provide a concrete storage tank that can significantly shorten the construction period on site and save construction costs.
Another object of the present invention is to provide a concrete storage tank which can be easily assembled and manufactured and which can reduce the cost of parts.

[0009]

In order to achieve the above object, in the invention described in claim 1, the peripheral wall is composed of a plurality of side wall segments evenly divided in the circumferential direction,
Each side wall segment is connected at both ends thereof via a connector.

In the invention of the concrete storage tank described in claim 2, the peripheral wall is composed of a plurality of side wall segments evenly divided in the circumferential direction and the vertical direction. In the invention of the concrete storage tank described in claim 3, a lid is arranged on the upper portion of the peripheral wall, the lid is constituted by a plurality of side wall segments, and each lid plate segment is connected at both ends thereof via a connecting tool. ing.

In the invention of the concrete storage tank according to the fourth aspect, the connector is composed of a metal box embedded in the segment, and a bolt and a nut for connecting the metal boxes.

[0012]

According to the first aspect of the present invention, the peripheral wall is composed of a plurality of side wall segments which are evenly divided in the circumferential direction, which is convenient for storage and transportation. Since it is only assembled on site, the construction period can be greatly shortened and construction costs can be saved. Moreover, since the side wall segments are connected at both ends thereof, long screw rods and through holes are not necessary.

According to the second aspect of the present invention, since the peripheral wall is evenly divided not only in the circumferential direction but also in the vertical direction, the side wall segment is further downsized, which is convenient for storage, transportation and construction.

According to the third aspect of the invention, since the lid is arranged on the upper portion of the peripheral wall, the inside of the storage tank can be sealed. In addition, the lid consists of multiple lid plate segments for storage,
It is convenient for transportation and assembly, and the connection between the cover plate segments is simple because the connection between the cover plate segments is connected at both ends.

According to the fourth aspect of the present invention, the members are connected in a screw-engaged relationship between the bolt and the nut, so that the connection is simple. Furthermore, since the bolts are short, it is easy to install and the cost of parts is reduced.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. As shown in FIG. 1, the concrete storage tank of this embodiment includes a base 11, a peripheral wall 12 mounted and fixed on the base 11, and a lid 13 closing an upper opening of the peripheral wall 12. The base 11 is constructed locally, and the peripheral wall 12 and the lid 13 are both precast.

As shown in FIG. 3, the base 11 is installed on the split stone 15 at the bottom of the excavation hole 14. The peripheral wall 12 is formed by polymerizing a plurality of ring bodies 21, and these ring bodies 21 are formed by connecting a plurality (three in the embodiment) of arc-shaped side wall segments 22. Recess 2
3 is formed on the inner periphery of the lower end of the side wall segment 22, and the protrusion 24 is formed on the inner periphery of the upper end of the side wall segment 22, respectively.
In the state where 1 is overlapped, the concave portion 23 and the convex portion 24 are engaged with each other, and the upper and lower ring bodies 21 are positioned relative to each other.

As shown in FIGS. 4 and 6, the first fitting portion 2
Reference numeral 5 is recessed at two locations on the inner peripheral surfaces of both ends of each sidewall segment 22. First metal connection box 26
Is embedded in the first fitting portion 25, and a hole 28 is formed in the wall of one side thereof. One side surface of the first connecting box 26 is open, and the first connecting box 26 is embedded and fitted in the first fitting portion 25 with the open portion facing inward. The bolt 29 is inserted between the holes 28 of the adjacent first connection boxes 26 and fastened by the nut 30. The spring washers 31 are respectively the wall of the first connection box 26, the head of the bolt 29 and the nut 3.
It is interposed between 0 and 0. Then, the bolts 29 and the nuts 30 connect and fix the adjacent first connecting boxes 26, and thus the adjacent side wall segments 22 together. The mortar 32 is filled in the first connection box 26, and the mortar 32 and the side wall segment 2 are filled.
The inner peripheral surface of 2 forms the same plane.

As shown in FIGS. 4 and 7, the pair of second fitting portions 41 are recessed in the inner peripheral surface of the central portion of each side wall segment 22. An insertion hole 42 is provided between the upper end and the lower end of the segment 22. The second connection box 43 has each second fitting portion 41.
A hole 44 is formed in the pair of walls so as to be fitted in the inside thereof so as to match the insertion hole 42. Then, the fixed rods 46 having the screws 45 engraved at both ends are inserted into the insertion holes 42 and the holes 44 other than the insertion holes 42 and the holes 44 at the lowermost part and the uppermost part, respectively. The nut 47 is fastened to the screws 17 and 45 in the second connection box 43 via a spring washer 48. By fastening the nuts 47, the ring bodies 21 are fixed to the other ring bodies 21 that are vertically adjacent to each other. Here, the mortar 32 is filled in the second connection box 43,
The mortar 32 and the inner peripheral surface of the sidewall segment 22 form the same plane.

As shown in FIGS. 5 and 8, the lid 13 is composed of a plurality of substantially fan-shaped (four in the embodiment) lid plate segments 51. Each lid plate segment 51
A concave portion 52 that engages with the convex portion 24 and performs a positioning function is formed on the lower surface of the outer periphery of the concave portion 52. Two third fitting portions 53 are formed on the upper surfaces of both ends of each lid plate segment 51, and a third connecting box 54 made of metal is embedded and fitted inside them. A hole 55 is formed in the wall on one side of the hole. This third connection box 54
Has one side surface opened, and is embedded in the third fitting portion 53 with the open portion facing outward. The bolt 56 is inserted between the holes 55 of the adjacent third connection box 54 and fastened by the nut 57. The bolts 56 and the nuts 57 connect and fix the adjacent third connecting boxes 54, and thus the adjacent cover plate segments 51. Further, the mortar 32 is filled in the third connection box 54, and the mortar 32 and the outer surface of the lid plate segment 51 form the same plane.

The central hole 19 is transparently provided in the lid 13,
In the center hole 19, another lid (not shown) having a ventilation function, a device such as a blower, is installed. Further, between the base 11 and the peripheral wall 12, each side wall segment 2 of the peripheral wall 12 is formed.
2, between the peripheral wall 12 and the lid 13, and each lid plate segment 5
The sealing property is maintained by a sealing material (not shown) between the first and second portions.

As shown in FIG. 2, a partition wall 61 and a cylinder 62 are provided upright on the base 11 in the peripheral wall 12. The partition wall 61 and the cylinder 62 partition the inside of the peripheral wall 12 and support the load of the lid 13. In addition,
The partition wall 61 and the cylinder 62 are configured by stacking segments having the same height as the side wall segments 22, and these segments are mutually fixed by a metal fitting (not shown).

The concrete tank constructed as described above is installed as follows. First, each side wall segment 22 and cover plate segment 51 is manufactured in advance in a factory. And at the installation site, the hole 14 is drilled,
The split stone 15 is laid flat on the bottom.

Next, the base 11 is placed on the split stone 15. Next, a circular marking 63 is formed on the base 11, and according to the marking 63, one side wall segment 22 forming the lowermost ring body 21 is installed on the base 11. Similarly, the other side wall segments 22 adjacent to each other in the circumferential direction are also connected and fixed on the base 11. Then those sidewall segments 2
2 is fixed to the base by mortar.

On the other hand, when the side wall segments 22 are installed, the side wall segments 22 forming the lowermost ring body 21 are inserted into the holes 28 of the adjacent first connecting boxes 43 as shown in FIG. The bolt 29, the nut 30, and the spring washer 31 are connected and fixed. Therefore, at this stage, the base 11, the lowermost ring body 21, and the side wall segments 22 forming the lowermost ring body 21 are connected and fixed.

Next, the fixed rod 46 is inserted from the upper end of the insertion hole 42 of the lowermost ring body 21. In this state, the recess 23 of the middle side wall segment 22 is formed on the lowermost ring 21.
And the convex portion 24 of the lowermost side wall segment 22 are engaged with each other, and one middle side wall segment 22 is placed so that the upper and lower insertion holes 42 are aligned with each other. Therefore, the insertion hole 4 on the lower side of the placed middle side wall segment 22 is
The fixed rod 46 is inserted into the unit 2. Then, as shown in FIG. 7, in the second connection box 43, the nut 47 is fastened to the screw 45 of the fixed rod 46. Therefore, at this stage, the lowermost ring body 21 and the middle ring body 21 that are vertically adjacent to each other are
And are connected and fixed. After that, the intermediate ring body 21 is assembled in the same manner as the lower ring body 21.

Further, the uppermost ring body 21 is similarly connected and fixed on the middle ring body 21. In this way, the peripheral wall 12 is assembled. Further, the partition wall 61 and the cylinder 62 are assembled from below at the same time as assembling each ring body 21.

Adjacent lid plate segments 51 are fastened with bolts 56 and nuts 57 in the third connection box 54. Then, the bolt 56 and the nut 57
Thus, the adjacent third connecting boxes 54, and thus the adjacent cover plate segments 51, are connected and fixed.

The lid 13 thus assembled is
The convex portion 24 of the uppermost ring 21 and the concave portion 52 of the lid plate segment 51 are placed on the peripheral wall 12 so as to engage with each other. The mortar 32 is filled in all the connection boxes 26, 43, 54 after fastening the nuts 30, 47, 57.

The concrete storage tank as shown in FIG. 1 assembled in this manner has the following advantages. (1) Since the members manufactured in advance are assembled, the construction period can be shortened and the construction cost can be saved. Furthermore, since each member is connected by the screwing relationship of the bolt and the nut, the assembly is easy.

(2) Since the bolts 29 and 56 for fixing the side wall segments 22 to each other and the lid plate segment 51 to each other are short, the bolts 29 and 56 can be easily attached. (3) Similarly, since the bolts 29 and 56 are short, the parts cost is reduced.

(4) Since the peripheral wall 21 is divided into upper and lower parts, the side wall segment 22 forming the peripheral wall 21.
Is small and convenient for storage, transportation and construction. The present invention is not limited to the above embodiment,
For example, the configurations of the respective parts may be modified and embodied as follows.

(1) The base 11 should be precast. (2) The precast type base 11 is divided into the same parts as the lid 13. (3) The vertical fixing structure of the side wall segment 22 is the same as the circumferential fixing structure in the above embodiment.

(4) The number of divisions of the side wall segment in the circumferential direction and the vertical direction should be different from that in the above-mentioned embodiment. (5) The base 11 and the lower side wall segment 22 are fixed by a fixing rod having a screw. To do this,
For example, a fixed rod is erected on the base 11 when the base 11 is driven, and a nut is fastened in the second connection box 43 to the screw at the upper end of the fixed rod.

[0035]

As described above in detail, in the invention of claim 1, the peripheral wall is composed of a plurality of side wall segments evenly divided in the circumferential direction, which is convenient for storage and transportation, and is easy to assemble. Since the prefabricated side wall segment is simply assembled on-site, the construction period can be greatly shortened and the construction cost can be saved. Further, the connecting bolts for fixing the side wall segments to each other are shortened, which facilitates the attachment of the bolts and reduces the cost of parts. In addition, a long through hole for the screw rod is not required, and the side wall segment can be easily manufactured.

According to the second aspect of the present invention, since the peripheral wall is equally divided not only in the circumferential direction but also in the vertical direction, the side wall segment is further downsized, which is convenient for storage, transportation and construction.

In the third aspect of the invention, since the lid is arranged on the upper part of the peripheral wall, the inside of the storage tank can be sealed. In addition, the lid consists of multiple lid plate segments for storage,
It is convenient for transportation and assembly, and since the lid plate segments are connected at both ends of the lid plate segments, the bolts are shortened as described above, and the bolts are easy to attach, and the parts cost is low. Goes down.

According to the fourth aspect of the invention, the members are connected by the screwing relationship of the bolt and the nut, so that the connection is simple. Furthermore, since the bolts are short, it is easy to install and the cost of parts is reduced.

[Brief description of drawings]

FIG. 1 is a perspective view of a concrete storage tank according to an embodiment of the present invention.

FIG. 2 is a perspective view showing the inside of a concrete storage tank.

FIG. 3 is an exploded perspective view of a concrete storage tank.

FIG. 4 is a perspective view of a side wall segment forming a peripheral wall.

FIG. 5 is a perspective view of a lid plate segment that constitutes the lid.

FIG. 6 is a perspective view of an essential part showing a connected state of left and right side wall segments that are adjacent to each other.

FIG. 7 is a perspective view of a main part showing a connection state between vertically adjacent side wall segments.

FIG. 8 is a plan view showing a connected state of adjacent cover plate segments.

[Explanation of symbols]

11 ... Base, 12 ... Peripheral wall, 13 ... Lid, 22 ... Side wall segment, 25 ... 1st fitting part which accommodates the connection tool for connecting side wall segments adjacent to a circumferential direction, 41 ... Vertically adjacent Second fitting portion for accommodating a connector for connecting the side wall segments, 42 ... Insertion hole, 51 ... Lid plate segment, 53 ... Accommodating connector for joining the circumferentially adjacent lid plate segments Third fitting part.

Claims (4)

[Claims] 1. A concrete storage tank in which a peripheral wall is arranged on a base, wherein the peripheral wall is composed of a plurality of side wall segments that are evenly divided in a circumferential direction, and each side wall segment has a connecting tool at both ends thereof. Connected concrete storage tank. 2. The concrete storage tank according to claim 1, wherein the peripheral wall comprises a plurality of side wall segments that are evenly divided in the circumferential direction and the vertical direction. 3. The lid according to claim 1 or 2, wherein a lid is installed on an upper part of the peripheral wall, and the lid is composed of a plurality of lid plate segments, and the respective lid plate segments are connected at both ends thereof by a connecting tool. The listed concrete storage tank. 4. The concrete storage tank according to claim 1, wherein the connector is composed of a metal box embedded in the segment and bolts and nuts connecting the metal boxes. .