JPH073863A - Remade pit and sewage pipeline - Google Patents

Abstract

PURPOSE:To make it possible to enhance workability by remaking a concrete pit without excavating a construction site and reduce construction cost as well. CONSTITUTION:A remade pit 10 is inserted into a concrete pit 24 in such a fashion that a short pipe 44 is housed in a pit box main body 14. A universal joint 48 connected to a flow-out pipe 20 is connected to an existing downstream pipe 34. Using an opening 40, the short pipe 44 is arranged so that one end of the short pipe 44 may be connected to an existing upper stream pipe 32. Then, mortar 65 is filled up around the remade pit 10, thereby fixing the remade measure 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rehabilitating pit and a sewer pipe, and more particularly to a rehabilitating basin and a sewer pipe disposed between an existing upstream pipe and an existing downstream pipe, for example.

[0002]

2. Description of the Related Art Generally, as shown in FIG. 11, a concrete basin 1 is provided near the boundary between private sewage and public sewage, and an upstream pipe 2 and a downstream pipe 3 are joined to the concrete sewage 1. ing. When such a concrete basin 1 deteriorates, there is a risk that rainwater and the like that have penetrated into the ground will flow into the concrete basin 1 from the joints 4 and 5, etc. and exceed the amount of treated water in the sewer main 6.

Therefore, in the past, the inflow of water was prevented by repairing the joints 4 and 5 with mortar or replacing the aged concrete tub 1 with a new one.

[0004]

However, the method of repairing the joint with mortar has a problem that the water cannot be surely stopped, and the method of replacing the concrete stake with a new one has high construction cost and workability. There was a problem that it was not applicable if the site could not be excavated due to bad traffic conditions.

Therefore, a main object of the present invention is to provide a rehabilitated slop and a sewer pipe which can easily, reliably and inexpensively rehabilitate a concrete stake.

[0006]

According to a first aspect of the present invention, a cylindrical tub body, a bottom plate formed on the tub body, and one end of the tub body are arranged so that the tube bottom and the top surface of the bottom plate are at substantially the same level. It is a rehabilitation basin which is provided with an outflow pipe fixed to the main body and having the other end connected to an existing downstream pipe. A second aspect of the present invention is a sewage pipe line connected between an existing upstream pipe and an existing downstream pipe, in which a cylindrical basin body, a bottom plate formed on the basin body, and the pipe bottom and the top surface of the bottom plate are An outlet pipe having one end fixed to the main body and the other end connected to the existing downstream pipe and an opening formed on the peripheral side surface of the main body so that they are at substantially the same level. It is a sewer line to be connected.

[0007]

[Operation] When rehabilitating an aged concrete basin,
An opening is provided on the peripheral side surface of the container body, a packing is attached to this opening, and the short pipe is housed in the container body. Also, connect a joint to the outflow pipe. In that state, the rehabilitation basin is inserted into the concrete basin, the outflow pipe is connected to the existing downstream pipe through the joint, and the short pipe is exchanged using the opening to connect to the existing upstream pipe.

The rehabilitation basin can be applied not only to the rehabilitation of the concrete basin but also to a case where a cleaning port is provided in the middle of the sewer pipe. In this case, the existing upstream pipe may be directly connected to the opening formed on the peripheral side surface of the container main body.

[0009]

According to the present invention, it is possible to rehabilitate a concrete stake easily and reliably at low cost without excavating the site. Further, the cleaning port can be easily provided in the middle of the sewer pipe. The above-mentioned objects, other objects, features and advantages of the present invention will become more apparent from the following detailed description of the embodiments with reference to the drawings.

[0010]

EXAMPLE A rehabilitation basin 1 of this example shown in FIGS. 1 and 2.
Reference numeral 0 includes a substantially hollow cylindrical container body 14 made of a synthetic resin such as vinyl chloride and having an enlarged diameter receiving port 12 at its upper end portion. An opening 16 is formed on the peripheral side surface of the basin body 14, and a peripheral edge of the opening 16 rises in the horizontal direction to form a joint portion 18.
Is formed. Then, the outflow pipe 20 is adhesively joined to the opening 16 using the joining portion 18. In addition, the basin body 1
At the bottom of 4, the bottom plate 22 is formed so that the upper surface thereof is at substantially the same level as the bottom of the outflow pipe 20.

Such a rehabilitation basin 10 is used, for example, when rehabilitating a concrete basin 24 as shown in FIG. The concrete basin 24 includes a main body 26, and openings 28 and 30 are formed in the peripheral side surface of the main body 26. An upstream pipe 32 and a downstream pipe 34 are joined to the openings 28 and 30 via a filler 36 such as mortar. In addition, an invert 38 is provided on the bottom of the main body 26.
Are formed.

When the concrete gravel 24 is rehabilitated using the rehabilitating pit 10, as shown in FIG. 4, an opening 40 is formed at a position corresponding to the existing upstream pipe 32 on the circumferential side surface of the basin body 14 and the opening 40 is formed. A packing 42 as shown in FIG. 5, for example, is attached to the peripheral edge. The packing 42 is made of rubber, foamed rubber, or the like, and its inner peripheral edge portion is formed in a tapered shape so that the short tube 44 can be easily exchanged. A protrusion 46 for removing sand and the like attached to the outer surface of the short tube 44 is formed on the inner peripheral surface of the packing 42 so as to extend in the circumferential direction. Furthermore, the packing 42 is curved in the circumferential direction in advance in order to improve the mountability.

A universal joint 48 is joined to the outflow pipe 20. The universal joint 48 includes a core 50 having a substantially spherical outer surface, and an outer surface of the core 50 has a receiving portion 52 having a generally spherical inner surface.
Are fitted. The receptacle 5 extends integrally from the receiving portion 52
4 is formed, and a seal ring 56 is fixed to the outer peripheral surface of the end portion of the spigot 54. Since the rehabilitation slab 10 needs to be inserted into the concrete slab 24, the horizontal length (the left-right direction length in FIG. 4) of the rehabilitation slab 10 including the universal joint 48 is smaller than the diameter of the concrete stub 24. Is set. For example, in the case of FIG. 4, the universal joint 48
The length when the free angle is zero (in this case, the length in the left-right direction is the shortest) may be equal to or smaller than the diameter of the concrete stake 24.

In the inside of the container body 14, the outer diameter of one end thereof is slightly larger than the inner diameter of the packing 42, and the short tube 4 having a seal ring 58 fixed to the outer peripheral surface of the other end thereof.
4 is stored. In this embodiment, openings 16 and 40
Are formed on the same straight line, and the inner diameter of the opening 16 is larger than the outer diameter of the short pipe 44, the length of the short pipe 44 can be set larger than the inner diameter of the basin body 14. .

On the other hand, in the concrete basin 24, a space for arranging the rehabilitation basin 10 in the concrete basin 24 after the existing upstream pipe 32 is stopped by a water stop member (not shown) and the invert 38 (FIG. 3) is crushed. Is secured.
Further, as can be seen clearly from FIG. 6, a drainage pipe 62 having a hole 60 formed on the peripheral side surface thereof is arranged inside the concrete basin 24 so as to extend into the ground. A crushed stone 64 is buried around the lower end.

Then, as shown in FIG. 6, the rehabilitation pit 10
(Fig. 4) is inserted into the concrete basin 24, the universal joint 48 (spout 54) is joined to the existing downstream pipe 34, and the short pipe 4
4 is connected to the existing upstream pipe 32. After that, rehabilitation basin 10
A mortar 65 is filled in the periphery of the mortar 65, thereby fixing the rehabilitation basin 10. Then, the water blocking member (not shown) is removed, the rising pipe 66 is joined to the enlarged diameter receiving port 12 of the rehabilitation pit 10, and the lid 68 is attached to the upper end of the rising pipe 66.

In the above embodiment, the bottom plate 22 may be inclined or an invert may be formed to straighten the flow in order to facilitate the flow from the inflow side to the outflow side. According to this embodiment, since the deteriorated concrete basin 24 can be rehabilitated without excavating the site, the workability can be improved and the construction cost can be reduced.

In the above-mentioned embodiment, the universal joint 48 is joined to the outflow pipe 20 of the rehabilitation pit 10 so as to correspond to the existing downstream pipe 34 that is inclined and installed. In the case where the pipe 34 is arranged horizontally, for example, a straight tubular joint 70 as shown in FIG. 7 may be joined instead of the universal joint 48. A rubber ring 72 is fixed to the outer peripheral surface of one end of the joint 70, and a receiving port 74 joined to the outflow pipe 20 is formed at the other end.

Further, the rehabilitation basin 10 can be applied to the case where the site is opened and cut as shown in FIG. 8, for example. In this case, the ends of the existing upstream pipe 32 and the existing downstream pipe 34 can be projected inside the open / closed portion 78, so that the universal joint 48 and the short pipe 44 can be replaced with rubber ring openings. Adhesive socket (or rubber ring socket) 80 and 82
May be formed. If the receiving port 80 and the existing downstream pipe 34 are joined and the receiving port 82 and the existing upstream pipe 32 are joined, since the diameter of the pipe line is not reduced, it is possible to prevent a decrease in water permeability. When the site is excavated, a pebbles 84 is laid on the bottom of the excavated portion 78, and a sand layer 86 is formed on the pebbles 84.
After stabilizing the rehabilitation basin 10 with the sand layer 86, earth and sand (not shown) is backfilled in the excavated portion 78.

Further, in each of the above-mentioned embodiments, the short pipe 44 is exchanged at the opening 40 to be connected to the existing upstream pipe 32. However, as shown in FIG. 9, for example, the short pipe 44 is connected to the existing upstream pipe 32. It may be exchanged in the pipe 32 and joined to the opening 40 of the rehabilitation basin 10. When the short pipes 44 are exchanged by using the existing upstream pipes 32 in this manner, it is not necessary to store the short pipes 44 in the rehabilitation basin 10 in advance, so that the case where there are two or more inflow pipes 32 is also applied. it can. However, in this case, it is necessary to form a plurality of openings 40 corresponding to the existing upstream pipes 32 on the peripheral side surface of the container body 14.

In each of the above-mentioned embodiments, the rehabilitation pit 10 and the existing upstream pipe 32 are joined together via the short pipe 44. However, when the site is cut open, it is shown in FIG. 10, for example. So that the existing upstream pipe 32 is directly rehabilitated.
You may make it connect to the opening 40 of 0. Further, the present invention is applicable not only to the case of rehabilitating the concrete basin 24 (FIG. 3) but also to the case of newly providing a cleaning port in the middle of the sewer pipe.

[Brief description of drawings]

FIG. 1 is an illustrative view showing one embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is an illustrative view showing a concrete stake to which the embodiment of FIG. 1 is applied.

4 is an illustrative view showing a state in which a universal joint is joined to an outflow pipe and a short pipe is housed inside in the embodiment of FIG. 1. FIG.

5 is an illustrative view showing a packing applied to the embodiment in FIG. 1. FIG.

FIG. 6 is an illustrative view showing a state where a concrete basin is rehabilitated using the embodiment of FIG.

FIG. 7 is an illustrative view showing a state in which another joint is joined to the outflow pipe.

FIG. 8 is an illustrative view showing another example of use of the embodiment in FIG.

FIG. 9 is an illustrative view showing a state where a short pipe is exchanged in an existing upstream pipe.

FIG. 10 is an illustrative view showing another usage example of the embodiment in FIG.

FIG. 11 is an illustrative view showing a conventional technique.

[Explanation of symbols]

 10 ... Rehabilitation basin 14 ... Main body 16, 40 ... Opening 20 ... Outflow pipe 22 ... Bottom plate 32 ... Upstream pipe 34 ... Downstream pipe 42 ... Packing 44 ... Short pipe 48 ... Universal joint 56, 58 ... Seal ring

Claims (5)

[Claims] 1. A cylindrical tub body, a bottom plate formed on the tub body, and one end thereof fixed to the tub body so that the tube bottom and the upper surface of the bottom plate are at substantially the same level, and another Rehabilitation pit with an outflow pipe whose end is connected to an existing downstream pipe. 2. The rehabilitation sickle according to claim 1, wherein the length in the horizontal direction of the whole including the stub body and the outflow pipe is selected so that the existing stub can be inserted. 3. The opening according to claim 1, further comprising: an opening formed on a peripheral side surface of the container main body, a packing attached to a peripheral edge of the opening, and a short pipe for interconnecting and connecting the container main body and an existing upstream pipe. Rehabilitation basin described in 2. 4. A sewage pipe line connected between an existing upstream pipe and an existing downstream pipe, wherein the tub body has a cylindrical shape, a bottom plate formed on the tub body, the pipe bottom and an upper surface of the bottom plate. So as to be substantially at the same level, an outflow pipe having one end fixed to the basin body and the other end connected to the existing downstream pipe, and an opening formed on a peripheral side surface of the basin body, A sewer line to which the existing upstream pipe is connected. 5. The sewer line according to claim 4, further comprising a short pipe that interconnects and connects the basin body and the existing upstream pipe.