JP2637385B2 - Underground rainwater control pond - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a relatively small underground rainwater control pond for temporarily storing a large amount of rainwater and gradually discharging the same to prevent flooding.

[0002]

2. Description of the Related Art Due to recent urbanization such as the development of a new urban area, redevelopment of an old urban area, and development of a residential area, the ability of the ground and surrounding water to retain rainwater is decreasing, and the amount of rainwater flowing out during rainfall is decreasing. It is increasing. In order to treat this increasing rainwater runoff and prevent flooding, downstream treatment facilities, waterways and pipelines must be reinforced and strengthened, but these measures cannot keep up with the increase in runoff. This is the current situation, causing repeated floods.

As a countermeasure, a rainwater regulating pond is provided in the development area to regulate the amount of rainwater runoff. This rainwater regulating pond is a relatively large structure, and is made and installed of cast-in-place reinforced concrete without exception. Have been. Rainwater regulation ponds associated with small-scale development and development can be relatively small,
A small rainwater regulating pond is also made of cast-in-place reinforced concrete.
It is generally installed.

[0004]

To manufacture and install a rainwater regulating pond made of cast-in-place reinforced concrete, formwork and rebar work are indispensable, and the construction period is long and the construction cost is high.

[0005]

SUMMARY OF THE INVENTION The present invention provides a method for manufacturing and installing a rainwater regulating pond made of cast-in-place reinforced concrete.
Several types of reinforced concrete products are used as constituent members, and a rainwater regulating pond is installed simply by connecting and assembling the constituent members. The purpose is to shorten the construction period and reduce construction costs.

More specifically, the present invention provides (A) the following five types of reinforced concrete culverts, and (A) an outflow end box having PC steel material insertion holes at the four corners, which have openings for entry and exit, and penetrate in the installation direction at the four corners. It has the same structure and the same shape as the culvert and the outflow end box culvert, but has a notch in the center of the side plate above the two lower PC steel insertion holes, and drills in the installation direction from the notch. A sediment box culvert with a PC steel hole inserted, (c) An inlet culvert with the same structure and width as the outlet culvert but a lower height,
(D) General box with the same structure and shape as the outflow box, but without a top plate with an opening for entry and exit, (e) Same structure and shape as a general box, but with PC steel material insertion holes Notched concrete in the center and an intermediate culvert with a PC steel anchorage; and (B) the following four types of precast reinforced concrete slabs:
(B) An outflow end plate with an outlet at the bottom and PC steel material insertion holes at the four corners, (b) A flow outlet at the bottom, an overflow port at the top, and PC steel insertion holes at the four corners Overflow version with
(C) A sediment section plate with a large opening from the center to the top, and PC steel material insertion holes at the four corners and diagonally below the opening.
(D) An inflow end plate having an inflow port at the top and PC steel material insertion holes at four corners. (C) At a predetermined position, first, an outflow end plate-outflow end box-overflow plate- Sediment box culvert-Install a sediment slab and connect it with PC steel.
This is an underground rainwater flow control pond that is installed and connected with an intermediate canal inserted in the middle, and finally installed and connected with an inflow end canal-an inflow end plate.

According to the present invention, the components are only five types of reinforced concrete box and four types of precast reinforced concrete slabs. At the site, these components are installed according to the order of installation and mutually strained by PC steel. An underground stormwater flow control pond will be constructed only by the work of applying force and connecting, and there will be no formwork or concrete casting work. As a result, the construction period is greatly reduced, and construction costs are reduced.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings.

First, examples of five types of reinforced concrete box culverts which are members of the rainwater flow control pond of the present invention will be described with reference to FIG. 1 and FIG. 1 and 2
(A) to (e) show examples of each type of reinforced concrete box culvert as an elevation view and a set of side views.

[0010] As shown in FIG.
In a, a top plate is provided with an opening 4 for entry and exit, and PC steel material insertion holes 3 penetrating in the installation direction are formed at four corners.

[0011] As shown in FIG.
b has the same structure and the same shape as the outflow end box 1a in that the top plate is provided with an opening 4 for entry and exit, and PC steel material insertion holes 3 penetrating in the installation direction at four corners are formed. ,
A notch 5b is provided at the center of the side plate above the two lower PC steel insertion holes 3, and a PC steel insertion hole 6 is provided from the notch 5b to the front in the installation direction.

[0012] As shown in FIG.
“c” has the same structure and width as the outflow end box 1a in that the top plate is provided with an opening 4 for entry and exit, and four corners are provided with PC steel material insertion holes 3 penetrating in the installation direction. But,
Height is low. Therefore, the interval between the upper and lower PC steel material insertion holes 3 is smaller than in the case of the outflow end box culvert 1a.

[0013] As shown in FIG.
Is the same in both width and height as the inlet end culvert 1c, and the PC steel material insertion holes 3 penetrating in the installation direction at the four corners are the same, but the top plate is provided with the entrance opening 4 Not been. This general case 1d is the simplest structure among the five types of reinforced concrete case.

[0014] As shown in FIG.
Is the same as general ditch 1d in width, height, number and position of PC steel insertion hole 3 and is almost the same as general ditch 1d, but it is only the inside of the ditch at the center of PC steel insertion hole. The difference is that a notch 5e is provided which opens to the opening.

Next, examples of four types of precast reinforced concrete slabs which are components of the rainwater flow control pond of the present invention will be described with reference to FIG. (A) of FIG.
(D) shows an example of each type of precast reinforced concrete slab as an elevation view and a set of side views.

As shown in FIG. 3A, the outflow end plate 2a
Has an outlet 7 at the lower center and PC steel material insertion holes 3 at four corners.

As shown in FIG. 3 (b), the overflow plate 2b has an overflow port 9 at the lower center, an overflow port 8 at the upper side, and PC steel material insertion holes 3 at four corners.

As shown in FIG. 3 (c), the sediment portion plate 2c
Has a large opening 10 from the center to the top, and has a total of six PC steel material insertion holes 3 at four corners and diagonally below the opening.

As shown in FIG. 3D, the inflow end plate 2d
Has an inlet 11 at the upper center and PC steel material insertion holes 3 at four corners.

An example of an operation procedure for assembling these constituent members to construct a rainwater suppression regulating pond will be described with reference to FIGS.

FIGS. 4A and 4B show the initial stage of the assembly, wherein FIG. 4A is a longitudinal sectional view and FIG. 4B is a transverse sectional view.

FIGS. 5A and 5B show the state at the time of completion of assembly, wherein FIG. 5A is a longitudinal sectional view and FIG. 5B is a transverse sectional view.

(1) On the excavated and compacted ground, the outflow end box 1a, the overflow plate 2b, the sediment box 1b, the sediment section 2c, and the outflow end plate 2a are installed in this order.

(2) PC steel material insertion holes 3 at four corners of each member
After the PC steel material 12 is inserted through it and tensioned, one end is the outflow end plate 2.
a, and the other end is fixed to the sediment portion plate 2c. However,
The top plate side of the sediment section 2c is provided with a coupler, and is temporarily attached to the sediment section plate 2c. An outflow pipe 13 is attached to the outflow port 7 of the outflow end plate 2a. (See FIG. 4) By this assembly, the spillway chamber, overflow weir, and sediment on the outflow side have been constructed. Although not shown, a filter is attached to the inflow side of the outlet 9 in the same manner as in the case of cast-in-place concrete to prevent adverse effects on the downstream, and a steel plate with an opening is attached to adjust the amount of outflow.

(3) On the ground slightly higher than the ground on the outflow side, in contact with the sediment part slab 2c, the general box 1d-the general box 1
d-Install in the order of the intermediate casing 1e.

(4) P on the top plate side of each newly installed member
The PC steel material 12 is inserted into the C steel material insertion hole 3, one end is connected to the existing PC steel material 12 by a coupler, and the other end is fixed in the notch 5e of the intermediate box 1e. PC steel material insertion holes 3 on the bottom plate side of each newly installed member 3-PC steel material insertion holes that are not at the four corners of the existing sediment section plate 2 c 3-PC steel material insertion holes 6 on the existing sediment section box 1 b After inserting the steel material 12 and tightening it, one end is cut out 5 of the existing sediment box culvert 1b.
b, and the other end is fixed in the notch 5e of the intermediate box 1e.

By this assembly, the first-stage water storage chamber is constructed.

(5) An appropriate number of general convertibles 1d and intermediate convertibles 1e are installed in contact with the existing intermediate convertibles 1e, and the existing intermediate convertibles 1e, the newly installed general convertibles 1d and the intermediate convertibles 1d are installed. Drain 1e
The PC steel material 12 is inserted into the PC steel material insertion holes 3 at the four corners of each member, and one end is fixed in the notch 5e of the existing middle box 1e and the other end is fixed in the notch 5e of the middle box 1e. The second-stage water storage room will be constructed and the water storage room will be extended.

(6) The water reservoir is extended by repeating (5).

(7) After the water storage chamber is extended to a predetermined length, the water storage chamber is brought into contact with the existing intermediate culvert 1e, and an appropriate number of general culverts 1e.
d-Inflow end box 1c-Inflow end plate 2d is installed, PC steel 12 is inserted into the existing middle case 1e and PC steel insertion holes 3 at four corners of each newly installed member, and one end is provided. The other end is fixed to the inflow end plate 2d in the notch 5e of the intermediate box 1e. An inflow pipe 14 is attached to the inflow port 11. Thus, the construction of the water storage chamber is completed.

In the above-mentioned connection of each box and connection of the box and each plate, it is important to ensure the watertightness of the connecting portion. In addition, a method such as providing a shallow dent in the connection end surface and attaching an elastic body thereto, or filling a sealing material into an inner joint on the inner surface side is also used.

After performing ancillary works such as manhole works, the excavated ground is backfilled and covered with soil, and the surface of the ground is used as roads and small parks.

If there is room on the site and it is required to install a rainwater control pond with a larger storage capacity, a plurality of rows of rainwater control pond are constructed before backfilling.

The example shown in FIG. 5 is an example in which members having rectangular side surfaces are assembled to form a rainwater suppression flow regulating pond horizontally, but a rainwater suppression flow regulating pond having a gentle slope is required. Often done. In that case, the side surface is a parallelogram, and each member provided with a PC steel material insertion hole corresponding to the inclination is manufactured, and the respective members are assembled in the same manner as described above to construct a rainwater flow control pond.

Also, each box is divided into two parts, each of which is divided into upper and lower parts, and each member of the lower half is assembled in the same manner as above to construct an open channel, and then each member of the upper half is constructed. It is also possible to assemble it in the installation direction while connecting it to the open channel to make a culvert, thereby constructing a rainwater suppression pond.

[0036]

By simply assembling the components of five types of reinforced concrete box and four types of precast reinforced concrete slabs on site, an underground rainwater control basin can be constructed. Disappears. As a result, the construction period is greatly reduced, and construction costs are reduced.

[Brief description of the drawings]

1 (a) to 1 (c) show an example of three types of reinforced concrete culverts as an elevation view and a set of side views.

FIGS. 2 (d) and 2 (e) show an example of two types of reinforced concrete culverts as a set of an elevation view and a side view.

3 (a) to 3 (d) show an example of four types of precast reinforced concrete slabs as an elevation view and a set of side views.

4A and 4B show an initial stage of assembling various components, and FIG.
Is a longitudinal sectional view, and (b) is a transverse sectional view.

FIGS. 5A and 5B show the completion of assembling of various components. FIG. 5A is a longitudinal sectional view, and FIG. 5B is a transverse sectional view.

[Explanation of symbols]

1a ··· Outflow end culvert, 1b ··· Sediment section culvert, 1c ··· Outflow end culvert, 1d ··· General culvert, 1e ··· Intermediate culvert, 2a
..Outflow end plate, 2b ... overflow plate, 2c ...
d · · · inflow end plate, 3 · · · PC steel material insertion hole, 4 · · · opening for access, 5b, 5e · · · notch, 6 · · · PC steel material insertion hole,
7 ... outlet, 8 ... outlet, 9 ... outlet, 10 ...
Opening, 11. Inlet, 12 PC steel, 13 Outflow pipe, 14 Inflow pipe.

Claims (1)

(57) [Claims] (A) The following five types of reinforced concrete culverts, (A) Outflow culverts having PC steel material insertion holes penetrating in the installation direction at the four corners, having opening and exit openings in the top plate, ) PC steel that has the same structure and shape as the outflow end culvert, but has a notch in the center of the side plate above the two lower PC steel insertion holes, and is drilled in the installation direction from the notch The sediment box culvert with insertion holes, (c) the same structure and width as the outflow culvert, but a lower height for the inflow culvert, and (d) the same structure and shape as the inflow culvert. There is, however, a general culvert without a top plate with an entrance opening, and (e) the same structure and shape as a general culvert, but the concrete in the center of the PC steel material insertion hole is notched and a PC steel material anchoring part is provided. (B) The following four types of precast reinforced concrete slabs,
(B) An outflow end plate with an outlet at the bottom and PC steel insertion holes at the four corners. (B) An outlet at the bottom, an overflow at the top, and PC steel insertion holes at the four corners. Overflow version with
(C) A sediment section plate with a large opening from the center to the top, and PC steel material insertion holes at the four corners and diagonally below the opening.
(D) An inflow end plate having an inflow port at the top and PC steel material insertion holes at the four corners. (C) At a predetermined position, first, an outflow end plate-outflow end box-overflow plate- Sediment box culvert-Install a sediment slab and connect it with PC steel.
An underground rainwater control basin that is installed and connected with an intermediate culvert in the middle, and finally installed and connected with an inflow-end culvert-inflow-end slab and covered with soil.