JP2882598B2 - Rainwater storage device using steel tube column retaining wall - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rainwater storage device using steel pipes in a steel pipe column retaining wall.

[0002]

2. Description of the Related Art
When constructing the underground structural part of a building, a retaining wall is installed on the ground surrounding the building. Of the retaining walls, those with steel pipe columns connecting many steel pipes,
Although it is excellent in proof stress and water stoppage, after it is used as a temporary retaining material, it is buried as in other retaining walls, so its use is examined, and as a foundation structure of a building, Alternatively, it is being used as an underground wall for liquefaction countermeasures in a built-up ground area, and as a heat storage water tank for air conditioning equipment.

On the other hand, in a building, domestic wastewater, rainwater, and the like are generally discharged into a sewer. In urban areas where the ground surface is often covered with impervious materials such as concrete, it is difficult for rainwater to penetrate into the ground,
During rainfall, the amount of water concentrated in sewers and even rivers increases, and the risk of floods in cities and rivers increases. For this reason, in recent years, it has been required to suppress the outflow of rainwater from a building, and as a part thereof, a builder may be required to have a storage facility for suppressing outflow of rainwater.

As the above-mentioned rainwater storage facility, it is conceivable to use the space of the double slab of the foundation beam of the building or to provide a storage tank separately from the building. In the former, however, the double slab has a special structure. In addition to the high construction cost, there is a problem that sufficient capacity cannot be obtained. In the latter case, a large site is required and the construction cost of the storage tank is extra. There is a problem that will be.

In view of the above-mentioned circumstances, the present invention makes it possible to use a steel pipe of a steel pipe column-retained wall installed in the construction of a conventional building as a storage tank for rainwater, and to reduce rainwater required for suppressing runoff of rainwater. It is not necessary to provide a storage tank specially in the underground part of the building or on the site, so that the construction cost can be reduced and the rainwater can be used.

[0006]

The structure of the present invention for achieving the above object will be described with reference to the drawings corresponding to the embodiments. The required number of steel pipes 1,1 in the steel pipe column soil retaining wall A provided in the ground which has been set up is formed into a bottomed shape to form a rainwater storage tank group C, and the steel pipe 1a at the beginning and the next adjacent steel pipe 1b
Are connected to each other at the upper part, and the steel pipes 1b to 1n from the next steel pipe 1b to the end are connected to each other at the lower part 6. A sludge pump 8 for discharging sediment is installed in the steel pipe 1a at the start end. And rainwater inflow means
12 and 13 are provided, and a drainage means 14 by overflow is provided in the terminal steel pipe 1n.

[0007] The apparatus of claim 2 is the same as the apparatus of claim 1, except that a pump 15 is provided in the other steel pipes 1b to 1n except for the steel pipe 1a at the start end to take out the stored rainwater for use. It is characterized by the following.

[0008]

In the apparatus according to the present invention, rainwater that has fallen on a building or its site is collected as appropriate, flows into the steel pipe 1a at the beginning of the storage tank group C, and is entirely passed through the flow pipe 5 and the communication pipe 6. Steel pipe 1
a to 1n. At that time, the earth and sand contained in the rainwater is deposited on the bottom of the steel pipe 1a at the beginning. The deposited earth and sand is discharged to the outside by the sludge pump 8. When the inside of the storage tank group C becomes full, the overflow pipe 14
It is discharged and discharged to the sewer 20.

In particular, in the apparatus according to the second aspect, the water stored in the storage tank group C is sent to a water supply tank or the like by the pumping pump 15 and can be used for hand-washing water, sprinkling water, fire-prevention water and the like. . When unnecessary, the water can be discharged to the sewage by the pump 15.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 4, A is a steel pipe column retaining wall installed in the ground adjacent to a building B to be constructed. In the building B, the ground surrounded by the retaining wall A is excavated and removed. In addition, it is constructed with a required interval from the inner surface of the retaining wall A.

The steel pipe column retaining wall A is, as conventionally known,
A large number of steel pipes 1 and 1 are connected to each other by joints 2 and 2 to form a wall. Generally, a drilling hole having a diameter larger than that of the steel pipe 1 is continuously formed, and soil cement 3 is filled therein. The steel pipe columns are formed by connecting and sinking the steel pipes 1 and 1. In the present invention, part or all of the steel pipes 1, 1 connected to this steel pipe column are used as a storage tank group C for rainwater.

Each steel pipe 1a used for the rainwater storage tank group C
As shown in FIG. 1, for example, to 1 n are formed in a bottomed container shape by providing a bottom plate 4 at the lower end thereof, and the upper end thereof is also closed non-hermetically by a lid plate if necessary. And
Of the steel pipes 1a to 1n, the steel pipe 1a at the start end is used as a sand settling tank, the steel pipe 1n at the end is used as an outflow tank, and the steel pipes 1b to 1e between them are used as storage connection tanks.
n are connected to each other in a freely circulating manner.

The upper end of the steel pipe 1a at the start end and the next steel pipe 1b are connected to each other by the flow pipe 5, and the lower end of each steel pipe from the steel pipe 1b to the end steel pipe 1n is connected to the lower end by the communication pipe 6. . Actually, as shown in FIG. 2, each steel pipe 1a to 1n
At the top or bottom of the building, take-out pipes 7, 7 protruding toward the building B side
Is provided, and the flow pipe 5 and the communication pipe 6 are connected via the take-out pipes 7, 7. And those pipes are steel pipes 1a-
It is provided after the deposition of 1n. In addition, each steel pipe 1a-1n
May not necessarily have a circular cross section as shown, but may have a rectangular shape, for example.

A sludge pump 8 for discharging sand is installed at the bottom of the inside of the steel pipe 1a at the start end used as a sand setting tank.
The sand discharge pipe 9 connected to the pipe reaches a sand basin 10 installed at an appropriate place outside the steel pipe 1a. In the sand basin 10, sand and water are separated and appropriately taken out. At the upper end of the steel pipe 1a, a screen 11 for removing dust is provided. On top of the screen 11, an inflow pipe 12 for taking in rainwater from the building B itself such as a rooftop and a rainwater in the building site are provided. An intake pipe 13 and the like to be taken in are provided in an open state.

An overflow pipe 14 is connected to an upper portion of the terminal steel pipe 1n used as a pumping pipe so that rainwater exceeding the full water level of the storage tank group C flows out to the sewer.

In the above apparatus, rainwater from the building B is collected in the inflow pipe 12 by appropriate means, and rainwater that has fallen in the building site is also collected in the inflow pipe 13 from a ditch or the like.
Each flows into the starting steel pipe 1a (sand settling tank). At that time, relatively large dusts are removed by the screen 11. And the sediment contained in the rainwater settles down,
The water flows into the next steel pipe 1b from the upper distribution pipe 5 and is stored in the square steel pipes 1b to 1n connected by the communication pipe 6. When the stored rainwater exceeds a predetermined full water level, the water flows out of the overflow pipe 14 to the sewer.

FIGS. 5 and 6 show another embodiment of the apparatus of the present invention. The apparatus of this embodiment is obtained by adding a configuration that allows the use of rainwater stored in the storage tank group C to the above-described apparatus. That is, other steel pipes 1b to 1n except the steel pipe 1a at the start end, for example, the steel pipe 1n at the end end
A pump 15 is installed in the inside, and the water stored in the storage tank group C is supplied via a water intake pipe 16 to a water supply tank (not shown) installed on a rooftop or the like. This water is used as water for hand washing and the like. In addition, a switching valve 17 is provided in the water intake pipe 16 so that water can be appropriately sent to a water tank 18 used for fire prevention water, water sprinkling, or the like, or the water can be discharged to a sewer with a reduced load. it can.

[0018]

As described above, the device of the present invention
The steel pipes of the steel pipe column retaining wall, which had been buried and abandoned as a temporary structure in the past, are used, and these steel pipes are used as rainwater storage tanks. Rather, a rainwater storage tank that requires a large capacity can be obtained at a low cost without requiring a special site. Then, since the rainwater in the building and its premises is stored in a considerable amount and then flows out to the sewer, the outflow of rainwater to the sewer during rainfall can be suppressed.

In particular, in the apparatus according to the second aspect, the stored rainwater can be used for a part of the water used for buildings, which can contribute to the reduction of the load on clean water.

[Brief description of the drawings]

FIG. 1 is a schematic view showing an embodiment of the device of the present invention.

FIG. 2 is a perspective view showing a connection example of the steel pipe.

FIG. 3 is a longitudinal sectional view showing the relationship between the device of the present invention and a building.

FIG. 4 is a plan sectional view of the same.

FIG. 5 is a schematic view showing another embodiment of the device of the present invention.

FIG. 6 is a perspective view showing the main part.

[Explanation of symbols]

 Reference Signs List A Steel pipe column retaining wall B Building C Storage tank group 1a-1n Steel pipe 4 Bottom plate 5 Flow pipe 6 Communication pipe 8 Sludge pump 9 Sand discharge pipe 10 Sand deposit 11 Screen 12,13 Inflow pipe 14 Overflow pipe 15 Pumping pump 16 Intake pipe 17 Switching valve 20 Sewer

──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Shinji Nishimura 3-3-2 Nihonbashi Muromachi, Chuo-ku, Tokyo Kubota Corporation Tokyo Headquarters (72) Inventor Takashi Nakagawa 3-3- Nihonbashi Muromachi, Chuo-ku, Tokyo 2. Kubota Corporation Tokyo Head Office (72) Inventor Chiaki Kaneko 1-3-8 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. Tokyo Branch (72) Inventor Hiromichi Kanno 1-3-3 Moto-Akasaka, Minato-ku, Tokyo No. 8 Kashima Construction Co., Ltd. Tokyo Branch (72) Inventor Takashi Takahashi 1-7-2 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. (72) Inventor Hideo Tanaka 1-2-2 Moto-Akasaka, Minato-ku, Tokyo No. 7 Kashima Construction Co., Ltd. (72) Inventor Noriyasu Soraku No. 191-1 Tobita-Shi, Chofu City, Tokyo Kashima Construction Co., Ltd. Technical Research Institute (72) Inventor Izumiyama Hiroro Kashima Construction Co., Ltd.Technical Research Institute, 2-9-1-1 Tobita-Shi, Chofu-shi, Tokyo (72) Inventor Masahiko Hanamura Kashima Construction Co., Ltd. (72) Inventor Neezuka, 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Toshio Kashima Construction Co., Ltd. 1-2-7 Moto-Akasaka, Minato-ku, Tokyo (56) References JP-A-5-196265 (JP, A) JP-A-5-54664 (JP, U) (58) Field (Int.Cl. ⁶ , DB name) E03B 3/02 E03B 3/03 E03B 11/14 E03F 1/00 E02D 5/00

Claims (2)

(57) [Claims] Claims: 1. A required number of steel pipes in a steel pipe column soil retaining wall provided in the ground adjacent to a building are formed with a bottom so as to form a rainwater storage tank group, and a steel pipe at a start end thereof and a steel pipe next to the steel pipe at the next end are formed. The upper and lower steel pipes communicate with each other at the upper part, and the respective steel pipes from the next steel pipe to the terminal end communicate with each other at the lower part. And a drainage means for overflowing the steel pipe at the terminal end. 2. A steel pipe column row retaining wall according to claim 1, wherein a pump for taking out the stored rainwater is provided in another steel pipe other than the starting steel pipe. Rainwater storage device.