JP2001254414A - Remodeling method for drain pipe penetrating concrete building frame - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a remodeling method for inexpensively remodeling a drain pipe of an old iron pipe embedded in a concrete building frame in a multiple dwelling house into a new drain pipe in low noise in a short period while a resident lives in the house. SOLUTION: After cutting the old iron pipe penetrating through the concrete building frame on both side ends of the concrete building frame, a stainless steel pipe longer than the old iron pipe is inserted inside the old iron pipe penetrating through the concrete building frame, and the new drain pipe is connected to the stainless steel pipe.

Description

DETAILED DESCRIPTION OF THE INVENTION

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for repairing a drainage pipe penetrating a concrete body.

2. Description of the Related Art An example of a conventional drainage pipe in an apartment house or the like, which was built about 30 years ago, is installed as shown in FIG. FIG. 5 is a plan view showing the piping state of the drain pipes of two adjacent houses A and B. The arrangement of the two houses A and B around the water is a substantially symmetric layout with the concrete wall 1 interposed therebetween. That is, A1 is house A
, B1 is a bathroom of the house B, A2 is a lavatory of the house A with the basin A3, and B2 is a lavatory of the house B with the basin B3. A4 is a kitchen provided with a sink A5 of the house A, and B4 is a kitchen provided with a sink B5 of the house B. Reference numeral 2 denotes a joint provided in the house A, and a drain pipe 3, a drain pipe 4, and a drain pipe 5 are connected to the joint 2. The drain pipe 3 is connected to a drain pipe 6 from the bathroom A1 of the house A and a drain pipe 7 from the kitchen A4. Further, a joint 8 is connected to the drain pipe 4. The joint 8 is formed of a drain pipe 9 previously provided from the lavatory A 2 of the house A and a steel pipe embedded in the concrete wall 1 separating the house A and the house B. Drain pipe 10
Is connected. The drainage pipe 10 is laid beforehand to pour the concrete to be the wall 1 between the house A and the house B, and is then buried by pouring the concrete to be the wall 1 or when the concrete is to be poured. A drain hole (concrete sleeve) for piping is formed in advance, a drain pipe 10 is piped into the drain hole, and then concrete is driven into the gap between the dump hole and the outer periphery of the drain pipe 10 to be buried. Further, a drain 11 is connected to the house B side of the drain 10, and the drain B is connected to the house B.
The drain pipe 12 from the bathroom B2, the drain pipe 13 from the bathroom B1 of the house B, and the drain pipe 14 from the kitchen B4 are connected. The drain pipe 5 connected to the joint 2 is house A
From the floor 15 on which the decorative tile 15A is stretched, is connected to a vertical drain pipe 16 which is piped by vertically penetrating the floor of each floor. This vertical drain pipe 16 is previously laid before pouring concrete on the floor 15 partitioning each floor, and is then buried by pouring concrete that will be the floor of each floor, or when the concrete is poured in, The drainage pipe 16 is piped into the disposal hole, and then concrete is driven into the gap between the disposal hole and the outer periphery of the drainage pipe 16 to be buried. Thus pipe by drainage tube, as well as corrosion corrosion by rust is generated in the interior of the water pipe of a steel pipe, oil or detergent or the like to be discharged from the water pipe of the kitchen and the scale solidified bound to this rust When the distribution pipes are clogged, and 20 to 30 years have passed since Chiku, the blockage rate of the distribution pipes has reached 30% to 60%, and in extreme cases, drainage may overflow from around the water. is there. For this reason, in order to reduce the clogging rate of the drainage pipe and increase the efficiency of drainage, scale removal is to be carried out using a towel or high-pressure washing.However, there is a limit to the removal of scale by these means. The tube needs to be replaced with a new one.

Replacing this old drain pipe with a new drain pipe involves the following problems. That is, the drain pipe 10 and the vertical drain pipe 16 shown in FIG. 5 are firmly embedded and fixed in the concrete of the wall 1 separating the house and the floor 15 on which the decorative tile 15A separating the floors is stretched. It is in. Therefore, in order to remove these drainage pipes, it is necessary to break and remove the concrete around the drainage pipes with a rock drill or the like. However,
When the drainage pipe is taken out, a large amount of noise or vibration is generated in the case of dry construction, which significantly impairs the living environment of the resident. There is also the danger that it may be damaged.
Also, in the case of the wet removal work (coring machine), the installation space of the machine is limited, and means for preventing the water used for the machine operation from leaking downstairs must be provided. Even if the noise, vibration, water leakage, etc. are tolerated, the residents may not be able to live during the construction period unless temporary drainage is provided separately because of the long-term construction. If there is a sick person or the like, they may be forced to evacuate temporarily. Further, backfilling of concrete damaged due to removal of the drainage pipe and compensation for restoration of the damaged decorative tile 15A require a great deal of cost and labor, and increase the economic burden. Also,
When renting another house during the construction period, rent is required in addition to the construction cost, and there is a problem that the economic burden increases.

SUMMARY OF THE INVENTION In order to solve these problems, the present invention solves these problems by cutting an old iron pipe penetrating a concrete vehicle at both ends of the concrete vehicle into a sleeve, and then forming a sleeve inside the sleeve. A longer stainless steel pipe was inserted, and a new drain pipe was connected to the stainless steel pipe.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. Since the entire piping state of the house A and the house B in the present invention is the same as the conventional piping state shown in FIG. 5 described above, those parts are given the same part numbers as those of the conventional example described in FIG. The description thereof will be omitted, and only the portions different from the related art will be described. First, from the state of the conventional drain pipe shown in FIG. 5, a drain pipe 10 of an old iron pipe penetrating concrete is replaced with a wall 1 as a concrete driving body.
4 and cut into sleeves, and the vertical drain pipe 16 is also cut at both upper and lower ends EE and FF of the floor 15 as a concrete precursor shown in FIG. Make a sleeve shape. The cut-off joints and drainage pipes are all discarded, so that the wall 1 has the old sleeve-like drainage pipe 10 shown in FIG. 1 and the floor 15 has the old sleeve-like vertical drainage pipe shown in FIG. Only 16 remains. Since the structures and dimensions of the joints and drainage pipes to be cut and discarded are known in advance, the structures and dimensions of the joints and drainage pipes to be discarded before cutting the drainage pipe 10 and the vertical drainage pipe 16 are cut. Have prepared new drainage pipes with the same structure and dimensions, and have these new fittings and drainage pipes have the same A or B
It is shown with the alphabet of "." Next, the old drainage pipe 10 remaining on the wall 1 and the old vertical drainage pipe 1 remaining on the floor 15
6 and the scale adhering therein is removed. Next, among the old drain pipes 10 remaining on the wall 1 where boring has been completed, those drain pipes 10 and vertical drain pipes 16 are placed.
Thin stainless steel tube 17 whose outer diameter is slightly smaller than the inner diameter of
Is inserted as shown in FIG. 2, and a caulking agent 21 is applied to the cut end faces. Next, house A and house B
A new drain pipe having the same structure and dimensions as those of the previously prepared joints and drain pipes to be discarded is provided by the fittings 18 and 19 shown in FIG. 17 is connected as shown in FIG. As shown in FIG. 4, the pipes of the concrete floor 15 separating the floors to the vertical drain pipes 16 are connected to the vertical drain pipes 16 left on the concrete floor 15 separating the floors.
6, a thin stainless steel pipe 17 having an outer diameter slightly smaller than the inner diameter of the vertical drain pipe 16 is inserted as shown in FIG.
Is applied. In addition, a new drain pipe 5A having the same structure and dimensions as the drain pipe 5 prepared in advance and scheduled to be discarded is connected to the stainless steel pipe 17 by a joint 20 as shown in FIG. Therefore, as mentioned above,
Since the structures and dimensions of the joints and drain pipes to be cut and discarded are known in advance, before cutting the drain pipe 10 and the vertical drain pipe 16, the structures and dimensions of the joints and drain pipes to be discarded are the same. If a new drain pipe having the following dimensions and a stainless steel vertical drain pipe are prepared in advance, the replacement work of the drain pipe of the present invention can be completed only by the following operations. That is, both ends CC, D of the drain pipe 10 penetrating the concrete of the wall 1
-D cutting work and upper and lower ends EE, FF of the floor 15 of the vertical drain pipe 16 penetrating the concrete of the floor 15
, Removing the scale inside the drain pipe 10 and the vertical drain pipe 16 remaining on the wall 1 and floor 15, and inserting a stainless steel pipe 17 into the inside of the pipe and applying a caulking agent. And the operation of connecting the prepared new drainage pipe to the stainless steel pipe 17 is completed.

As described above, according to the present invention, the construction period of the drainage pipe replacement work is extremely shortened, the cost is significantly reduced, and the living environment is deteriorated because no noise or vibration is generated. There is no effect. In addition, since the replacement work can be performed while the resident is resident, there is no need to move during the construction period, which has the effect of reducing the burden economically. Furthermore, the stainless steel tube does not corrode, so it has the effect of being excellent in durability,
The thickness of stainless steel pipe is extremely thin compared to other pipe materials such as steel pipe, resin pipe and composite pipe, and it has sufficient strength and fire resistance, so even if it is inserted inside the conventional drain pipe,
The cross-sectional area required for drainage is maintained at a high ratio, and there is an effect that it is possible to secure a large amount of drainage channels as compared with drainage pipes in which used houses are increasingly blocked. In addition, this method has an effect that the drain pipe can be quickly replaced while the resident is resident, and there is no damage to the housing facilities such as the wall surface and the floor surface, so that the economic burden is extremely reduced.

[Brief description of the drawings]

FIG. 1 is a sectional view of a state where both ends of a drain pipe penetrating a wall according to the present invention are cut off.

FIG. 2 is a cross-sectional view showing a state in which a drain pipe penetrating a wall of the present invention is cut at both ends and a stainless steel pipe is inserted therein.

FIG. 3 is a plan view showing a state where the drainage pipe replacement work of the present invention has been completed.

FIG. 4 is a cross-sectional view showing a state where replacement work of the vertical drainage pipe of the present invention has been completed.

FIG. 5 is a plan view of a conventional drain pipe.

[Explanation of symbols]

 1 Wall (Concrete Driving) A, B House A1, B1 Bathroom A2, B2 Washing Room A3, B3 Washing A4, B4 Kitchen A5, B5 Sink 10 Drain Pipe (Old Iron Pipe) 15 Floor (Concrete Driving) 16 Vertical Drain Pipe (old iron pipe) 17 Stainless steel pipe 18 Fitting 19 Fitting 20 Fitting 21 Caulking agent

Claims (1)

[Claims] Claims 1. An old steel pipe penetrating a concrete vehicle is cut at both ends of the concrete vehicle to form a sleeve.
A method for repairing a drainage pipe through a concrete body, comprising inserting a stainless steel pipe longer than the sleeve inside the sleeve and connecting a new drainage pipe to the stainless steel pipe.