JP7144989B2 - Construction method of water tank dividing partition wall and water tank dividing partition wall - Google Patents

Description

TECHNICAL FIELD The present invention relates to a water tank dividing partition wall and a construction method for the water tank dividing partition wall, and more particularly to a water tank dividing partition wall formed of precast concrete blocks and a construction method for the water tank dividing partition wall.

Conventionally, in order to divide an existing water tank into multiple parts, the water in the water tank was once drained to a "dry" state, and then partition walls were installed. For this reason, there have been problems such as the inability to treat water, the preservation of microorganisms and activated sludge, and the treatment of wastewater, sludge, etc. during the dry state or during the dry state.
Therefore, an invention has been disclosed in which a partition wall is installed in a "wet" state without discharging the water in the water tank (see, for example, Patent Document 1).

Japanese Patent Application Laid-Open No. 2013-103176 (pages 5-8, FIG. 8)

In the invention disclosed in Patent Document 1, a plurality of frame members are lined up and lifted, lowered into a water tank in which water is stored, the frame members are brought close to the wall surface of the water tank, the frame members are fixed to each other, and the surface member is attached to the frame member. is installed to stop water between the end surface of the frame member and the wall surface of the water tank.
For this reason, it is necessary to fabricate a steel frame member on land in advance and attach a waterproofing means (a bag that expands when mortar is poured into water) to the frame member, which raises the problem of high manufacturing costs. In addition, since a space is required above the water tank for arranging and lifting a plurality of frame members, there is a problem that the water tank that can be installed is limited.

It is an object of the present invention to solve the above problems and to provide a water tank dividing partition wall and a construction method for the water tank dividing partition wall, which can be installed at low cost without restrictions on the type of water tank to be installed.

A water tank dividing partition according to the present invention is a water tank dividing partition for dividing an existing water tank, and is formed of a plurality of precast blocks, an angle member is fixed to the water tank wall surface of the water tank by an anchor, and one side surface of the precast block. On the other side, a water-swelling rubber is arranged along the wall end surface facing the wall surface of the water tank, and the water-swelling rubber is sandwiched between the angle member and the precast block by a through-bolt penetrating the angle member. and a hydrophilic urethane resin is filled between the wall end surface of the precast block and the wall surface of the water tank, and a connection box is provided on the facing connection end surfaces of the adjacent precast blocks, and a water stop is provided between the connection end surfaces. Rubber is arranged, and the waterproof rubber is pressed by the connecting end surface by connecting bolts that fasten the facing connecting boxes.
Further, caulking is applied to a boundary between the one side surface and the angle material and a boundary between the other side surface and the angle material.

A method for constructing a tank dividing partition according to the present invention is a method for constructing a tank dividing partition for dividing an existing tank by installing the tank dividing partition in water, wherein an anchor is fixed to the tank wall surface of the tank, and the anchor is fixed to the wall of the tank. A first step of fixing the one angle member to the water tank wall surface by inserting the one angle member into an anchor hole formed in the one angle member and screwing an anchor nut onto the anchor; a second step of arranging the water-swelling rubber in a rubber groove formed along the wall end face facing the , and pressing the water-swelling rubber against the one angle member; a third step of arranging the water-swelled rubber in the rubber groove formed along the water-swelled rubber and pressing the other angle member against the water-swelled rubber; a fourth step of swelling the water-swelled rubber; a fifth step of screwing a through-nut onto a through-bolt passing through the other angle member to bring the one angle member and the other angle member closer to each other; a sixth step of fixing the other angle member to the water tank wall surface by fixing the anchor to the water tank wall surface, inserting the anchor into the anchor hole, and screwing the anchor nut to the anchor; A seventh step of disposing a waterproof rubber between the connecting end faces of the blocks facing each other; An eighth step of pinching water rubber, a ninth step of filling hydrophilic urethane resin between the wall end surface and the water tank wall surface, a boundary between the one side surface and the one angle member, and the other side surface and a tenth step of caulking between the boundary with the other angle member and between the connecting end faces .

Since the water tank dividing partition according to the present invention is installed with a plurality of relatively small and light precast blocks, there is no restriction on the water tank to be installed, and the cost is lower than that of steel welded structures.
Further, the method for constructing a water tank dividing partition according to the present invention includes executing the first to tenth steps, and using an anchor for fixing the angle material, connecting the angle material and the precast block, or connecting the precast blocks to each other. Since the bolts are used for , the work in the water is easy, and the installation work in the water becomes possible. Therefore, since the period for drying the water tank is shortened , the construction period is greatly shortened, and the construction cost is reduced.
Further, since the water-swelling rubber, the hydrophilic urethane resin and the caulking are provided, the water tank dividing partition wall is excellent in waterproofing.

FIG. 2 is a plan view showing a pumping station for explaining the water tank dividing partition according to Embodiment 1 of the present invention. FIG. 2 is a side view showing the water tank dividing partition wall for explaining the water tank dividing partition wall according to Embodiment 1 of the present invention. 3(a) is a perspective view showing a part (precast block), and FIG. 3(b) is a part (one angle (c) of FIG. 3 is a perspective view showing a part (the other angle member). 4(a) is a cross-sectional front view showing an installation form (position of through bolts), and FIG. FIG. 4C is a front sectional view showing the installation form (position of the urethane groove), and FIG. 4C is a front sectional view showing the installation form (installation on the column surface of the water tank). 5(a) is a plan view cross-sectional view showing the connection form (the position of the connection box), and FIG. It is sectional drawing of the planar view which shows a connection form (position removed from the connection box). FIG. 10 is a side view showing a construction procedure for explaining a construction method for a water tank dividing partition wall according to Embodiment 2 of the present invention. FIG. 10 is a side view showing a construction procedure for explaining a construction method for a water tank dividing partition wall according to Embodiment 2 of the present invention. 6 is a flow chart illustrating a method for constructing a water tank dividing partition wall according to Embodiment 2 of the present invention.

Hereinafter, a water tank dividing partition according to Embodiment 1 of the present invention will be described with reference to the drawings. Since each drawing is schematically drawn, the shape and size of each member, the positional relationship between members, and the number of members are not limited to the illustrated form.

[Embodiment 1]
(Water tank partition wall)
1 to 5 illustrate a tank dividing partition wall according to Embodiment 1 of the present invention. FIG. 1 is a plan view showing a pump station, FIG. 2 is a side view showing a tank dividing partition wall, and FIG. (a) is a perspective view showing a part (precast block), (b) of FIG. 3 is a perspective view showing a part (one angle material), and (c) of FIG. 3 shows a part (the other angle material) Fig. 4(a) is a front sectional view showing the installation form (position of the through bolt); Fig. 4(b) is a front sectional view showing the installation form (position of the urethane groove); 4(c) is a front sectional view showing the installation form (installation on the column surface of the water tank), FIG. 5(a) is a planar sectional view showing the connection form (position of the connection box), (b) is a plan view cross-sectional view showing a connection form (a position separated from the connection box). In addition, each drawing is drawn typically. In particular, FIG. 3 is for explaining each part, and the size (scale) and spacing of each part are exaggerated.

(pump station)
FIG. 1 shows a pumping station which is an example of a water tank. The pumping station 100 has a receiving well 110 shown on the left side of the drawing and a pumping well 130 shown on the right side of the drawing. A water treatment channel 120d (hereinafter sometimes collectively referred to as "water treatment channel 120") is arranged, and treated water flows from the left side (upstream side) in the figure to the right side (downstream side) in the figure (hereinafter "X direction" called). In addition, five rows of first pump chambers 140a to fifth pump chambers 140e (hereinafter sometimes collectively referred to as “pump chambers 140”) are arranged downstream of the pump well 130 (on the right side in the figure). In the following description, descriptions of “first, second, . Also, the direction perpendicular to the X direction is called the “Y direction”, and the direction perpendicular to the XY plane is called the “upward direction” or the “Z direction”.
The water treatment channel 120 is provided with an inflow gate 121, a coarse screen 122, an automatic dust remover 123, a sand scraper 124, and an outflow gate 125 from upstream to downstream.
The pump well 130 is surrounded by a water tank bottom surface 131 , which is a water tank wall surface, a plurality of water tank columnar surfaces 134 , and water tank side surfaces 132 provided between the water tank columnar surfaces 134 . An opening communicating with the water treatment channel 120 and an opening communicating with the pump chamber 140 are formed in the water tank side surface 132 . The pump well 130 is watertightly partitioned by a water tank partition wall 150 . Moreover, a water tank beam 133 parallel to the water tank bottom surface 131 is installed above the pump well 130 (see FIG. 6(a), etc.).

(Water tank partition wall)
In FIG. 2, the water tank partition wall 150 includes 15 precast blocks (hereinafter abbreviated as "PC blocks") 10a to PC blocks 10p (hereinafter collectively referred to as "PC blocks 10") and the PC blocks 10 in the water tank. It has one angle member 20 and the other angle member 30 (see FIG. 4) installed on the bottom surface 131 and the tank column surface 134 .
The water tank partition wall 150 is installed underwater in a state (wet state) in which the water of the pump well 130 of the existing pump station 100 is not discharged (this will be described in detail later). Although the water tank in which the water tank dividing partition 150 is installed is the pump well 130 in the pumping station 100, the present invention is not limited to this, and can be installed in various water tanks. Also, the number of PC blocks 10 forming the water tank partition wall 150 is not limited.

(precast block)
In FIG. 2, the PC block 10 has a rectangular or pentagonal plate-like shape, but for the sake of simplicity, a rectangular PC block 10a will be described below.
In FIG. 3A, the PC block 10a has a pair of side surfaces (hereinafter referred to as one side surface 12 and the other side surface 13, respectively), a bottom end surface 11 facing the tank bottom surface 131 of the pump well 130, and a pump well 130 a column end face 14 facing the water tank column face 134, a top end face 15 facing the PC block 10f parallel to and adjacent to the bottom end face 11, and a connecting end face 16 facing the PC block 10b parallel and adjacent to the column end face 14. is equipped with
The bottom end face 11 and the column end face 14 are the same as the "wall end face" because they face the water tank bottom face 131 and the water tank column face 134, respectively, which constitute the walls of the water tank. For example, since the PC block 10b does not have an end face facing the water tank column 134, it is assumed to have a pair of connecting end faces 16. For example, the PC block 10e is surrounded by the adjacent PC blocks 10. Therefore, it is assumed that there are four connecting end faces 16, and that the PC block 10o arranged in the center of the uppermost stage has three connecting end faces 16. As shown in FIG. Further, the pentagonal PC block 10c, for example, is assumed to be formed by a pair of planes in which the column end face 14 is bent.

(rubber groove and urethane groove)
In FIG. 3(a), on one side 12 and the other side 13 of the PC block 10a, rubber grooves 41, which are concave grooves for arranging the water-expansion rubber 40, are formed in parallel with the bottom end face 11 and the column end face 14. Each is formed over the entire width. A through-bolt hole 91 through which a through-bolt 90 passes is formed at a position closer to the bottom end surface 11 than the rubber groove 41 is. However, the through-bolt hole 91 is not formed at a position closer to the column end face 14 than the rubber groove 41 is.
Urethane grooves 51 for allowing the hydrophilic urethane resin 50 to pass are formed at a position closer to the bottom end face 11 than the rubber groove 41 and a position closer to the column end face 14 than the rubber groove 41 . Note that the urethane groove 51 is formed at a position that does not interfere with the through bolt hole 91 .

(connecting box)
In FIG. 3A, a connecting box 70 for connecting adjacent PC blocks 10 is provided on the connecting end face 16 (including the top end face 15) of the PC block 10a. However, the connection box 70 is not provided on the top surface 15 of the PC blocks 10n, 10o, and 10p arranged on the uppermost stage.
In FIG. 5(a), the connection box 70 installed on the PC block 10a has a connection surface 71 arranged on the same plane as the top end surface 15 or the connection end surface 16, and one side surface 12 (the other side surface 13 in some cases). ), buried surfaces 73 (four surfaces) embedded in the PC block 10, and grout or mortar 74 installed inside the box. A connecting bolt hole 75 is formed in the connecting surface 71, and a steel rod (hereinafter referred to as an "anchor bar 79") is connected to the embedded surface 73 to reinforce the PC block 10a.

(One angle material)
In (b) of FIG. 3 and (a) to (c) of FIG. 4, one angle member 20 arranged on one side surface 12 and the other angle member 30 arranged on the other side surface 13 are both made of stainless steel. Although the steel is equal-angle steel, the present invention is not limited to equal-angle steel made of stainless steel, and the material may be appropriately changed, or uneven-angle steel or welded angle material may be used.
On one side of the angle member 20 abutting against the tank bottom surface 131 or the tank column surface 134 (hereinafter referred to as the "wall surface side 21"), an anchor 80 erected on the tank bottom surface 131 or the tank column surface 134 penetrates. Anchor holes 82 are formed to allow through-bolts 90 to pass therethrough. A hole 92 is formed.
At this time, the anchor holes 82 are arranged in two rows, each of which is formed at five locations at regular intervals. Therefore, even if the anchors 80 are fixed at positions that avoid interference with reinforcing bars or the like arranged near the tank bottom surface 131 or near the tank column surface 134, the row of the anchor holes 82 into which the anchors 80 enter is selected. By doing so, the water tank dividing wall 150 (same as the PC block 10) can be installed at a desired position.

(other angle material)
In (c) of FIG. 3 and (a) to (c) of FIG. 4, the side of the other angle member 30 that abuts on the tank bottom surface 131 or the tank column surface 134 (hereinafter referred to as "wall surface side 31") has Anchor holes 83 for penetrating the anchors 80 erected on the bottom surface 131 of the water tank or the column surface 134 of the water tank are formed. is formed with a through-bolt hole 93 for the through-bolt 90 to pass through. The one angle member 20 and the other angle member 30 have different lengths depending on the installation form. Also, the other angle members 30 have different lengths depending on whether they are arranged on the bottom end face 11 or on the column end face 14 .

(Urethane injection port)
In FIGS. 3(c) and 4(b), a hydrophilic urethane resin 50 is injected into the side 32 of the other angle member 30 at a position corresponding to the urethane groove 51 formed in the other side 13. urethane injection port 53 is formed. At this time, the urethane injection port 53 has a through hole (not shown) passing through the side edge 32 and a connection pipe fixed to the side edge 32 so as to surround the through hole and protrude toward the wall edge 31 . is doing. Such a connecting pipe is for connecting an injection hose (not shown) for the hydrophilic urethane resin 50 .
A urethane injection port (not shown) for injecting the hydrophilic urethane resin 50 may be formed in the side face 22 of the one angle member 20, and the formation of the urethane injection port 53 in the other angle member 30 may be omitted. . Furthermore, both the one angle member 20 and the other angle member 30 may be formed with urethane injection ports, and one of them may be used as a urethane discharge port for discharging the hydrophilic urethane resin 50 .

(Installation form of the PC block on the bottom of the water tank)
In (a) and (b) of FIG. 4, an anchor 80 is erected on the bottom surface 131 of the water tank. The anchor 80 passes through an anchor hole 82 formed in the wall surface side 21 of the one angle member 20 , and a threaded anchor nut 88 presses the wall surface side 21 against the tank bottom surface 131 . Similarly, the anchor 80 passes through an anchor hole 83 formed in the wall side 31 of the other angle member 30 , and a threaded anchor nut 88 presses the wall side 31 against the tank bottom 131 .
The PC block 10 is arranged between the one angle member 20 and the other angle member 30, and the through bolt hole 92 formed in the one angle member 20 and the through bolt hole 93 formed in the other angle member 30 and the PC block A through-nut 99 is screwed onto a through-bolt 90 that passes through a through-bolt hole 91 formed in 10 (see FIG. 4(a)).

At this time, the water-swellable rubber 40 is arranged in the rubber grooves 41 formed on the one side 12 and the other side 13 , respectively, and the swollen water-swellable rubber 40 moves between the rubber groove 41 formed on the one side 12 and the side 22 . and a rubber groove 41 formed in the other side surface 13 and the side edge 32, respectively.
The weight of the PC block 10 is transmitted to the through bolt 90, and a gap (hereinafter referred to as "bottom gap 101") is formed between the bottom end surface 11 of the PC block 10 and the bottom surface 131 of the water tank. Since the water-swelling rubber 40 is compressed and accommodated in the rubber groove 41, the side edge 22 and the one side edge 12 are in contact, and the side edge 32 and the other side edge 13 are in contact. , part of the self weight of the PC block 10 may be transmitted to the one angle member 20 and the other angle member 30 as a frictional force.

Furthermore, the hydrophilic urethane resin 50 is injected from the urethane injection port 53 formed in the side edge 32 of the other angle member 30, and the range sandwiched between the one angle member 20 and the other angle member 30, that is, the bottom gap 101 Hydrophilic urethane resin 50 is filled (more precisely, between the side edge 32 and the other side surface 13 in a range closer to the bottom end face 11 than the rubber groove 41, and in a range closer to the bottom end face 11 than the rubber groove 41 It may also intrude between the side edge 22 and the side surface 12).
Furthermore, caulking 60 is applied to the boundary between the one side surface 12 of the PC block 10 and the side surface side 22 of the one angle member 20 and the boundary between the other side surface 13 of the PC block 10 and the side surface side 32 of the other angle member 30. .

(Installation form of PC block on column surface of water tank)
In FIG. 4C, the installation form on the tank column surface 134 (same as the wall surface) is substantially the same as the installation form on the tank bottom surface 131, but a through bolt hole 91 is formed near the column end surface 14 of the PC block 10. Therefore, the through-bolt 90 passes only through the through-bolt hole 92 formed in the one angle member 20 and the through-bolt hole 93 formed in the other angle member 30, and the column end face of the PC block 10 14 and the tank column 134 . Therefore, a gap (hereinafter referred to as "column gap 104") is formed between the column end face 14 of the PC block 10 and the water tank column face 134, into which a part of the through bolt hole 91 enters. A hydrophilic urethane resin 50 is filled.
In this case, the weight of the PC block 10 is not transmitted to the through bolts 90, but more accurately, part of the weight of the PC block 10 is transmitted to the one angle member 20 and the other angle member 30 as frictional force.
The reason why the through bolt holes 91 are not formed near the column end face 14 of the PC block 10 is to absorb the variation in the interval between the PC blocks 10 that occurs when the PC blocks 10 adjacent to each other in the Y direction are connected. be.

(Connection form of adjacent PC blocks)
5(a) and 5(b), the adjacent PC block 10a and PC block 10b have a connection box 70 installed on the former connection end surface 16 and a connection box 70 installed on the latter connection end surface 16. facing each other. Adjacent PC blocks 10a and 10b are connected by screwing connecting nuts 77 onto connecting bolts 76 passing through connecting bolt holes 75 formed in the facing connecting boxes 70. As shown in FIG. At this time, the water stop rubber 78 is arranged between the connecting end surfaces 16 facing each other, and the water stop rubber 78 is pressed by the screwing.
Furthermore, caulking 60 is applied across both connecting end faces 16 (more precisely, corners with one side surface 12 and corners with the other side surface 13).

(Effect)
The water tank dividing partition 150 has the above-described structure, is simple in structure, guarantees watertightness, and is formed of a plurality of PC blocks 10, so that it is less expensive than a welded structure made of steel. In addition, since it is formed by connecting a plurality of PC blocks 10, there is no restriction on the number of existing water tanks to be installed.
In addition, since bolts/nuts are used to install the PC blocks 10 on the tank bottom surface 131 and the tank column surface 134 and to connect the PC blocks 10 to each other, underwater work is facilitated and the pumping station 100 is kept dry. The construction period is greatly shortened by shortening the period of

[Embodiment 2]
(Construction method for water tank partition wall)
6 to 8 illustrate a construction method for a water tank dividing partition wall according to Embodiment 2 of the present invention. FIGS. 6 and 7 are side views showing construction procedures, and FIG. 8 is a flow chart. In addition, the same name and the same code|symbol are attached|subjected to the same site|part as Embodiment 1, and the part|part corresponding to it, and some description is abbreviate|omitted.
In FIG. 6(a), the pump well 130 is drained to a "dry" state and a "priming operation" is performed. Then, the operator 300 installs temporary earth retaining materials and chain blocks (not shown), assembles the scaffolding 301 with a single pipe pipe, and searches for reinforcing bars in the vicinity of the tank bottom surface 131 and the tank column surface 134. Perform rebar centering. Furthermore, part of the scaffolding 301 is removed. It should be noted that "drying" is required only for such preparatory work, and because the duration is short, the problems associated with "drying" are minimized.
In FIG. 6b, the pump well 130 is watered to a "wet" condition. Therefore, anchors 80 are fixed to the tank bottom surface 131 and the tank column surface 134 in order to install the one angle member 20 .

In (c) of FIG. 6, one angle member 20 is installed on the bottom surface 131 of the water tank and the column surface 134 of the water tank. At this time, anchor holes 82 are formed in the one angle member 20 at positions corresponding to the anchors 80 installed on the tank bottom surface 131 and the tank column surface 134 at the site. Then, part of the scaffolding 301 is removed.
In FIG. 6(d), the PC blocks 10 are hung one by one, pressed against one angle member 20 and sandwiched by the other angle member 30, and the other angle member 30 is fixed to the tank bottom surface 131 and the tank column surface 134. In FIG. (this will be discussed in detail later). Furthermore, adjacent PC blocks 10 are connected (this will be described in detail separately). The length of the other angle member 30 is adjusted for each PC block 10, and after one PC block 10 is installed, the next PC block 10 is hung.

In FIG. 7A, after all the PC blocks 10 are installed, an injection hose (not shown) is connected to the urethane injection port 53 to fill the bottom gap 101 and the column gap 104 with the hydrophilic urethane resin 50. do. Also, the connection box 70 is filled with grout or mortar 74 (see FIG. 5(a)).
In (b) of FIG. 7, caulking 60 is applied between the boundary between the one side surface 12 and the one angle member 20, the boundary between the other side surface 13 and the other angle member 30, and between the connecting end surfaces 16. In FIG.
After that, a one-sided water pressure test is performed to check whether there is a water leak, and if there is a water leak, caulking is performed again, and the temporary material (not shown) is removed.

(flowchart)
Based on FIG. 8, the procedure for installing the PC block 10 will be described in detail.
First, the anchor 80 is fixed to the tank bottom surface 131 and the tank column surface 134 (S1-1). 88 is screwed (S1-3).
Next, the water-swellable rubber 40 is placed in the rubber groove 41 formed in the one side surface 12 of the PC block 10, and the water-swellable rubber 40 is pressed against the one angle member 20 (S2).
Then, the water-swellable rubber 40 is placed in the rubber groove 41 formed on the other side surface 13 of the PC block 10, and the other angle member 30 is pressed against the water-swellable rubber 40 (S3).
Then, it waits to swell the water swelling rubber 40 (S4). If the water-expansion rubber 40 has already swelled, the process proceeds to the next step without waiting.
Then, a through-nut 99 is screwed onto the through-bolt 90 passing through the one angle member 20 and the other angle member 30 to bring the one angle member 20 and the other angle member 30 close to each other (S5). That is, the PC block 10 is held between the one angle member 20 and the other angle member 30 .

Then, the anchor 80 is fixed to the tank bottom surface 131 and the tank column surface 134 in accordance with the position of the anchor hole 83 previously formed in the other angle member 30 (S6-1), and the anchor nut 88 is screwed to the anchor 80. (2 of S6).
Further, a waterproof rubber 78 is arranged between the connecting end faces 16 of the PC blocks 10 facing each other (S7), and connecting bolts 76 passing through connecting bolt holes 75 formed in the connecting boxes 70 facing each other are connected with connecting nuts. 77 are screwed together, and pressure is applied to the waterproof rubber 78 (S8).
Then, the bottom surface gap 101 and the column surface gap 104 are filled with hydrophilic urethane resin 50 (S9), the boundary between the one side surface 12 and the one angle member 20, the boundary between the other side surface 13 and the other angle member 30, and the connecting end surface Caulking 60 is applied between 16 (S10).

(Effect)
As described above, the method for constructing a water tank dividing partition according to the present invention executes the above-described steps. Through-bolts 90 and through-nuts 99 are used for sandwiching between the angle member 20 and the other angle member 30, and connecting bolts 76 and connecting bolt-nuts 77 are used for connecting the PC blocks 10 to each other. Enables installation work in Therefore, since the period for drying the water tank is shortened , the construction period is greatly shortened and the construction cost is reduced.
Furthermore, since the water swelling rubber 40, the hydrophilic urethane resin 50 and the caulking 60 are provided, the water tank dividing partition 150 having excellent water stopping property can be obtained.

The present invention has been described above based on the first and second embodiments. It should be understood by those skilled in the art that these Embodiments 1 and 2 are merely examples, and that various modifications can be made to their constituent elements and their combinations, and that such modifications are within the scope of the present invention. be.

INDUSTRIAL APPLICABILITY As described above, the present invention can be widely used as a water tank dividing partition installed in various water tanks and a construction method for the water tank dividing partition.

10: PC block 11: bottom end surface 12: one side surface 13: other side surface 14: column end surface 15: top end surface 16: connection end surface 20: one angle member 21: wall side 22: side side 30: other angle member 31: wall side 32: Side edge 40: Water expansion rubber 41: Rubber groove 50: Hydrophilic urethane resin 51: Urethane groove 53: Urethane injection port 60: Caulking 70: Connection box 71: Connection surface 72: Connection box lid 73: Buried surface 74: Grout or mortar 75: Connecting bolt hole 76: Connecting bolt 77: Connecting nut 78: Waterproof rubber 79: Anchor bar 80: Anchor 82: Anchor hole 83: Anchor hole 88: Anchor nut 90: Through bolt 91: Through bolt hole 92 : Through bolt hole 93: Through bolt hole 99: Through nut 100: Pump station 101: Bottom clearance 104: Column surface clearance 110: Receiving well 120: Water treatment channel 121: Inflow gate 122: Coarse screen 123: Automatic dust remover 124: Sand scraper 125: outflow gate 130: pump well 131: tank bottom 132: tank side 133: tank beam 134: tank column 140: pump room 150: tank dividing partition 300: operator 301: scaffolding

Claims (3)

A water tank dividing partition wall for dividing an existing water tank,
Formed by multiple precast blocks,
An angle member is fixed by an anchor to the wall surface of the water tank,
Water-swelling rubber is arranged along the wall end face facing the water tank wall surface on one side and the other side of the precast block,
The water-expansion rubber is pressed between the angle material and the precast block by a through bolt penetrating the angle material,
A hydrophilic urethane resin is filled between the wall end surface of the precast block and the wall surface of the water tank,
A connection box is provided on the facing connection end surfaces of the adjacent precast blocks,
A waterproof rubber is arranged between the connecting end faces,
The water tank dividing partition wall, wherein the water stop rubber is clamped by the connecting end face by a connecting bolt that fastens the facing connecting boxes. 2. The tank dividing partition wall according to claim 1, wherein a boundary between said one side surface and said angle member and a boundary between said other side surface and said angle member are caulked. A construction method for a water tank dividing partition for installing a water tank dividing partition for dividing an existing water tank underwater, comprising:
An anchor is fixed to the water tank wall surface of the water tank, the one angle member is fixed to the water tank wall surface by inserting the anchor into an anchor hole formed in the one angle member, and screwing an anchor nut onto the anchor . a first step;
a second step of placing a water-swelling rubber in a rubber groove formed along a wall end surface facing the water tank wall surface on one side surface of a precast block and pressing the water-swelling rubber against the one angle member;
a third step of placing a water-swellable rubber in a rubber groove formed along the wall end face on the other side surface of the precast block and pressing the other angle member against the water-swellable rubber;
a fourth step of swelling the water-swellable rubber;
a fifth step of screwing a through-nut onto a through-bolt penetrating the one angle member and the other angle member to bring the one angle member and the other angle member closer to each other;
An anchor is fixed to the water tank wall surface in accordance with the position of the anchor hole formed in the other angle member, the anchor is inserted into the anchor hole, and an anchor nut is screwed to the anchor to remove the other angle member. A sixth step of fixing to the water tank wall surface;
a seventh step of arranging a waterproof rubber between the connecting end surfaces of the precast blocks facing each other;
an eighth step of screwing a connection nut onto a connection bolt passing through a connection bolt hole formed in the connection boxes facing each other to pinch and press the waterproof rubber;
a ninth step of filling a hydrophilic urethane resin between the wall end surface and the wall surface of the water tank;
A tenth step of caulking between the boundary between the one side surface and the one angle member, the boundary between the other side surface and the other angle member, and the connecting end surfaces. Construction method.

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