JPH0743252Y2 - Concrete assembly type sewage treatment tank - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete prefabricated sewage treatment tank constructed by combining a plurality of types of precast reinforced concrete wall bodies formed in a predetermined shape.

[0002]

2. Description of the Related Art For example, in the case of constructing a concrete sewage treatment tank, conventionally, a pit is first excavated in the ground, a foundation and a bottom slab are installed in the pit, and then a plurality of outer wall surfaces and insides of the sewage treatment tank are constructed. The partition wall surface for partitioning into the tank is formed by pouring concrete. For this reason, a method of assembling complicated reinforcing bars and constructing a formwork on site and pouring concrete into the formwork is adopted.

[0003]

[Problems to be Solved by the Invention] However, in order to form each wall surface of the sewage treatment tank as described above, first, on the site, a complicated rebar is assembled, and then a form is made, and then by so-called in-situ casting. The method of pouring concrete requires a lot of man-hours and has a problem that the construction period becomes long.

Therefore, the present invention provides a concrete assembling type sewage treatment tank which can reduce the number of steps and the construction period without the need of assembling the reinforcing bars and producing the formwork at the construction site. There is.

[0005]

[Means for Solving the Problems] Claim 1 in the present invention
The concrete prefabricated sewage treatment tank described is one in which a sewage treatment tank is constructed in a pit excavated in the ground. Precast reinforced concrete T-shaped branch consisting of a corner wall, a precast reinforced concrete outer wall consisting of a bottom slab and one vertical wall, and a bottom wall and a vertical wall consisting of two flats intersecting the T-shape. A partition wall body made of precast concrete, which comprises a wall body, a bottom slab portion and a vertical wall portion of one plane erected in the central portion of the bottom slab portion, and a top plate made of precast reinforced concrete, and the corner wall body is provided. The bottom slabs are arranged at the four corners of the processing tank so as to project inside the processing tank, and a plurality of positions are provided between the corner walls. The T-shaped branch wall is disposed so as to face the bottom wall of the T-shaped branch wall inside the processing tank, and the outer wall is disposed between the corner wall and the T-shaped branch wall. Forming a peripheral wall and forming partition walls between the T-shaped branch wall bodies to divide the inside of the processing bath into a plurality of partition walls to form a bath main body. It is characterized by placing a plate.

According to a second aspect of the present invention, there is provided a concrete assembly type sewage treatment tank in which a sewage treatment tank is constructed in a pit excavated in the ground, wherein a vertical wall portion constituted by a bottom plate portion and two planes orthogonal to the L-shape. Precast reinforced concrete corner wall consisting of, precast reinforced concrete outer wall consisting of bottom slab and 1-plane vertical wall, and precast consisting of bottom slab and 2 planes intersecting T-shape A T-shaped branch wall body made of reinforced concrete, a cross-shaped branch wall body composed of a bottom plate portion and a vertical wall portion composed of two planes orthogonal to the cross shape, and a bottom plate portion and a central portion of the bottom plate portion. A partition wall body made of precast concrete consisting of vertical wall portions of one plane and a top plate made of precast reinforced concrete are provided, and the corner wall body is a bottom plate thereof. Are arranged at the four corners of the processing tank so as to project inside the processing tank, and the T-shaped branch wall bodies are provided at a plurality of positions between these corner wall bodies so that the bottom wall portions thereof project inside the processing tank. The T-shaped branch wall body which is arranged as described above, forms the peripheral wall of the processing tank by arranging the outer wall body between the corner wall body and the T-shaped branch wall body, and constitutes the peripheral wall of the processing tank. The cross-shaped branch wall body, the partition wall body, and the T-shaped branch wall body are arranged between them to form a partition wall for partitioning the inside of the processing tank into a plurality of parts to form a tank main body, and the top surface of the tank main body is provided with the ceiling. It is characterized by placing a plate.

[0007]

[Function] Each wall surface of the sewage treatment tank or the partition wall that divides the inside of the tank can be formed by a combination of precast reinforced concrete wall bodies, so the steel bars are assembled on site to form a mold and the concrete is poured into the mold. The work can be reduced and the construction period can be shortened.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS.
It will be described based on. The sewage treatment tank of this embodiment is shown in FIG.
The precast reinforced concrete corner wall body 1 shown in FIG. 5, the precast reinforced concrete outer wall body 2 shown in FIG. 5, the precast reinforced concrete T-shaped branch wall body 3 shown in FIG. The partition wall body 4 constitutes the tank main body 5.

A corner wall 1 made of precast reinforced concrete shown in FIG. 4 is an L-shaped bottom slab 1a and a vertical wall composed of two planes rising from the outer two sides of the bottom slab 1a and orthogonal to the L-shape. Anchor rebar 1 which is composed of a portion 1b and is embedded inside from the inner surface side of the bottom slab portion 1a.
Many c are protruding.

The outer wall body 2 made of precast reinforced concrete shown in FIG. 5 has a rectangular bottom slab 2a and this bottom slab 2a.
And a vertical wall portion 2b formed of a single flat surface that rises from one outer side portion of the bottom plate portion 2a, and a large number of anchor reinforcing bars 2c embedded inside project from the inner surface side of the bottom slab portion 2a.

The T-shaped branch wall body 3 shown in FIG. 6 is composed of a rectangular bottom plate portion 3a and a vertical wall portion 3b composed of two planes intersecting with each other in a T shape. Of this vertical wall portion 3b,
One plane rises from one outer side of the bottom slab 3a, and the other plane rises from the center of the bottom slab 3a.

The partition wall body 4 shown in FIG. 7 is composed of a rectangular bottom plate portion 4a and a vertical wall portion 4b of one plane rising from the central portion of the bottom plate portion 4a. A large number of anchor rebars 4c embedded inside project from.

In order to construct a sewage treatment tank, first, as shown in FIG. 1, a pit 6 which is slightly larger than the sewage treatment tank to be constructed is excavated in the ground, and a slag 7 is placed on the entire bottom of the pit 6. After paving, concrete is driven into the places where the corner wall body 1, the outer wall body 2, the T-shaped branch wall body 3 and the partition wall body 4 are to be installed, and the foundation portion 8 is constructed. Spread 9 mortars.

Then, as shown in FIGS. 1 and 2, corner wall bodies 1 are arranged at the four corners of the hard mortar 9. Also, in FIG. 2, the lower two corner walls 1
Between the two corner walls 1 on the upper side and the upper side, the T-shaped branch wall bodies 3 are arranged intermittently so as to face each other, for example, four pieces each. A plurality of outer wall bodies 2 are arranged between the corner wall body 1 and the T-shaped branch wall body 3 to form an outer peripheral wall surface of the processing tank. In this case, as the outer wall body 2, a plurality of types having different lengths are used. Further, the partition wall body 4 is arranged between the T-shaped branch wall bodies 3 facing each other, thereby forming a partition wall for partitioning the inside of the processing tank into a plurality of parts.

The corner wall 1 arranged as described above,
The outer wall body 2, the T-shaped branch wall body 3 and the partition wall body 4 constitute a tank body 5. For the connection of these wall bodies, a joint metal or prestress is used to integrate them, and a seam is filled with packing material or caulking material for waterproofing. In the figure, 1d, 2d, 3c and 4d are sheath holes for passing prestressed PC steel wires. Next, as shown in FIG. 1, the reinforcing bars 10 are assembled in a grid shape in a portion corresponding to the bottom of the tank body 5, and the reinforcing bars 10 are assembled into the bottom plate portion 1a of the corner wall body 1, the bottom plate portion 2a of the outer wall body 2 and the partition. Anchor rebar 1 protruding from the bottom plate portion 4a of the wall body 4
linked to c, 2c and 4c. Then, concrete is driven into the portion corresponding to the bottom to form the bottom slab 11 shown in FIG.

After that, the concrete of the bottom slab 11 is cured, and at the stage when this curing period has passed, the outside of the tank body 5 is filled with soil. Then, as shown in FIG. 3, a plurality of precast reinforced concrete top plates 12 are provided on the upper surface of the tank body 5.
Is placed and the upper surface of the tank body 5 is closed. The sewage treatment tank is constructed as described above. In addition, each part partitioned by the partition wall body 4 communicates with each other through a hole (not shown), and each part of the partition is a waste water adjusting tank, an aeration tank, a sedimentation tank,
Used as a filtration tank, disinfection tank, etc.

According to this embodiment, the front, rear, left and right outer walls and partition walls of the sewage treatment tank are made of precast reinforced concrete corner wall 1, outer wall 2, T-shaped branch wall 3 and partition wall 4. Since it is configured by, unlike the conventional method, it is not necessary to assemble the reinforcing bars on the site to form the formwork and pour concrete into the formwork, which can reduce the man-hours and the construction period. be able to. Further, the size of the sewage treatment tank can be easily adjusted by changing the height of each of the walls 1 to 4 or the number of the walls used.

8 and 9 show a second embodiment of the present invention. In this embodiment, the precast reinforced concrete corner wall body 1 shown in FIG. 4 described in the first embodiment, the precast reinforced concrete outer wall body 2 shown in FIG. 5, and the precast reinforced concrete T-shape shown in FIG. The branch wall body 3, the partition wall body 4 made of precast reinforced concrete shown in FIG. 7, and the cross-shaped partition wall body 13 made of precast reinforced concrete shown in FIG. 9 constitute the tank body 14.

The cross-shaped partition wall body 13 shown in FIG. 9 is composed of a square bottom plate portion 13a and a vertical wall portion 13b composed of two planes rising from the bottom plate portion 13a so as to intersect with the cross shape at right angles. . In addition, 13c is a sheath hole.

In order to construct a sewage treatment tank, a pit larger than the sewage treatment tank constructed on the ground is first excavated and a foundation is constructed at the bottom of the pit, as in the first embodiment. Then, lay hard kneading mortar (neither is shown) on this foundation. And 4 of this hard mortar
The corner wall 1 is arranged at the corner as shown in FIG. Further, in FIG. 8, the upper two corner wall bodies 1
A required number of T-shaped branch wall bodies 3 are arranged between the two corner wall bodies 1 on the lower side and between the two corner wall bodies 1 on the right side, and between the two corner wall bodies 1 on the left side. A required number of T-shaped branch wall bodies 3 are arranged in each. Further, the outer wall body 2 is arranged between each corner wall body 1 and the T-shaped branch wall body 3 to form the outer peripheral wall surface of the processing tank. In this case, as the outer wall body 2, a plurality of types having different lateral widths are used.

On the other hand, as shown in FIG. 8, the T-shaped branch wall body 3 is provided inside the peripheral wall of the processing tank constructed as described above.
And the cross-shaped branch wall body 13 are arranged, and these branch wall bodies 3
The partition wall body 4 is disposed between the partition walls 13 and 13 to form a partition wall for partitioning the inside of the processing tank into a plurality of partitions.

The corner wall 1 arranged as described above,
The outer wall body 2, the T-shaped branch wall body 3, the partition wall body 4, and the cross-shaped branch wall body 13 constitute a tank body 14. In addition, in the same way as the first embodiment, the connection of these wall bodies is made by a joint metal or prestressing, and the joint portion is filled with packing material or caulking material for waterproofing. Next, a reinforcing bar (not shown) is knitted in a lattice pattern in a portion corresponding to the bottom of the tank body 14, and the reinforcing bar is attached to each wall body 1,
Anchor rebars 1c and 2 protruding from the bottom plate parts 2 and 4
c, 4c. Then, concrete is driven into the portion corresponding to the bottom to form the bottom plate of the sewage treatment tank.

After that, the concrete of the bottom slab is cured, and at the stage when this curing period has passed, the outside of the tank body 14 is filled with soil. Then, a top plate (not shown) is placed on the upper surface of the tank body 14 to close the upper surface of the tank body 14. The sewage treatment tank is constructed as described above. Note that, for example, sewage flows in from an inflow port 15 formed on the left wall surface in FIG. 8, and treated water flows out from an outflow port 16 formed on the right wall surface.
Further, each part partitioned by the partition wall is communicated with each other through the hole 17, and each partition part is used for a sand settling tank, a sludge storage tank, a waste water adjusting tank, an aeration tank, a settling tank, a filtration tank, and the like.

As described above, also in this embodiment, the peripheral wall and the partition wall of the sewage treatment tank are the corner wall body 1, the outer wall body 2, the T-shaped branch wall body 3, the partition wall body 4, and the cross-shaped partition wall made of precast reinforced concrete. Because it can be composed of the body 13,
Unlike the conventional method, it is not necessary to assemble the reinforcing bars on the site to form the formwork and pour concrete into the formwork, which can reduce the man-hours and the construction period.

In each of the above-described embodiments, the wall bodies are arranged without any gap to form the peripheral wall and the partition wall of the processing tank. However, in order to adjust the dimensions and the like, FIG.
, A gap C is set between the required wall bodies A and B,
The gap C may be filled with fresh concrete D. In this case, the side end surfaces of the walls A and B are provided with a recess E having a semicircular arc shape, and the reinforcing bars F embedded in the walls A and B are projected in the recess E. Then, the reinforcing bar G is connected to the reinforcing bars F, F of the both wall bodies A and B, and
Forming materials H and H for covering the gap C from both sides are attached between the gaps B and B, and then the fresh concrete D is poured into the gap C. Even if the dimensions are adjusted in this manner, the number of places where the gap C is set is very small, so that it does not significantly affect the reduction of man-hours and the construction period.

[0026]

As described above, according to the present invention, the outer wall or the partition wall can be formed by combining the precast reinforced concrete wall bodies, so that the rebar is assembled on site to form the formwork, and It does not have to take the method of pouring concrete into, and it has the excellent effect that the number of steps can be reduced, the construction period can be shortened, and the size of the sewage treatment tank can be easily adjusted.

[Brief description of drawings]

FIG. 1 is a perspective view showing a first embodiment of the present invention.

2 is a plan view

[Fig. 3] Vertical side view

FIG. 4 is an enlarged perspective view of a corner wall.

FIG. 5 is an enlarged perspective view of an outer wall body.

FIG. 6 is an enlarged perspective view of a T-shaped branch wall body.

FIG. 7 is an enlarged perspective view of a partition wall body.

FIG. 8 is a perspective view showing a second embodiment of the present invention with a top plate removed.

FIG. 9 is an enlarged perspective view of a cross-shaped branch wall body.

FIG. 10 is a partial cross-sectional view showing a third embodiment of the present invention.

[Explanation of symbols]

1 is a corner wall, 2 is an outer wall, 3 is a T-shaped branch wall,
4 is a partition wall body, 5 is a tank body, 6 is a pit, 10 is a reinforcing bar,
11 is a bottom plate, 12 is a top plate, 13 is a cross-shaped branch wall, 14
Is the tank body.

Claims (2)

[Scope of utility model registration request] 1. In a sewage treatment tank constructed in a pit excavated on the ground, a precast reinforced concrete corner wall body comprising a bottom slab portion and a vertical wall portion constituted by two planes orthogonal to the L-shape, and a bottom slab. Part made of precast reinforced concrete consisting of a wall and one vertical wall, and T made of precast reinforced concrete consisting of a bottom slab and a vertical wall composed of two planes intersecting in a T shape.
The corner wall includes a character-shaped branch wall body, a partition wall body made of precast concrete composed of a bottom slab portion and a vertical wall portion of one plane erected in the central portion of the bottom slab portion, and a top plate made of precast reinforced concrete. The body is placed at the four corners of the treatment tank so that the bottom plate of the treatment tank is projected to the inside of the treatment tank, and the T-shaped branch walls are provided at a plurality of positions between the corner wall bodies. The outer wall body is disposed between the corner wall body and the T-shaped branch wall body so as to form a peripheral wall of the processing tank, and is disposed between the T-shaped branch wall bodies while facing each other so as to project inward. A concrete prefabricated sewage characterized by arranging the partition wall body to form a partition wall that divides the inside of the processing tank into a plurality of parts to form a tank main body, and mounting the top plate on the upper surface of the tank main body. Processing tank. 2. A construction of a sewage treatment tank in a pit excavated in the ground, wherein a precast reinforced concrete corner wall body comprising a bottom slab portion and a vertical wall portion composed of two planes orthogonal to the L-shape, and a bottom slab. Part made of precast reinforced concrete consisting of a wall and one vertical wall, and T made of precast reinforced concrete consisting of a bottom slab and a vertical wall composed of two planes intersecting in a T shape.
A cross-shaped branch wall body comprising a letter-shaped branch wall body and a vertical wall portion constituted by a bottom plate portion and two planes orthogonal to the cross shape, and a bottom plate portion and a vertical plane of one plane erected in the central portion of the bottom plate portion. A partition wall body made of precast concrete comprising a wall portion and a top plate made of precast reinforced concrete are provided, and the corner wall body is provided at the four corner portions of the treatment tank so that the bottom plate portion thereof projects inside the treatment tank. The T-shaped branch wall bodies are arranged at a plurality of positions between these corner wall bodies such that the bottom plate portion thereof projects inside the processing tank.
The outer wall body is disposed between the corner wall body and the T-shaped branch wall body to form a peripheral wall of the processing tank, and the cross-shaped branch wall is provided between the T-shaped branch wall bodies forming the peripheral wall of the processing tank. Body, the partition wall body, and the T-shaped branch wall body are arranged to form a partition wall for partitioning the inside of the processing tank into a plurality to form a tank body,
A concrete assembling sewage treatment tank, wherein the top plate is placed on the upper surface of the tank body.