JP2983095B2 - Underground double wall drainage pipe burial method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for burying an underground double wall drainage pipe for draining water from a gap between two underground double walls.

[0002]

2. Description of the Related Art Conventional underground double wall drainage pipes are buried in
As shown in FIG. 2, a lower concrete 4 below an underground double wall 1 composed of an outer driving body wall 2 and an inner partition wall 3.
When casting, a method of embedding in the lower concrete 4 a hard vinyl chloride pipe 11 whose both ends are closed with adhesive tapes 12 and 12 as a drain pipe has been adopted.

[0003]

However, in the above-mentioned conventional method, the hard vinyl chloride pipe 11 is used, so that the installation may not be easy due to the arrangement of reinforcing bars or the like. There is a problem in that concrete may enter and the vinyl chloride pipe 11 may be clogged at the time of installation, and there is a problem that the hard vinyl chloride pipe 11 becomes a hindrance at the time of cutting and the work efficiency is poor.

SUMMARY OF THE INVENTION In view of the above problems, the present invention is easy to install, does not clog the drain pipe with concrete during casting, and does not interfere with the cutting operation. An object of the present invention is to provide a method for burying a double-wall drainage pipe underground.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides an underground tank for draining water from an inter-wall gap of an underground double wall comprising an outer driving wall and an inner partition wall. In the embedding method of the heavy-wall drainage pipe, the pressure-resistant flexible tube is folded to form a folded portion at one end, the folded portion is positioned in the gap between the walls, and the open end at the other end is placed between the walls. After the flexible tube is buried in the lower concrete of the double-walled underground wall while leaving the folded portion and the open end together in the drainage space below the gap, the folded portion is cut off and the lower concrete is removed. The remaining portion of the flexible tube is a drain tube.

[0006]

According to the method of embedding the double-walled drainage pipe according to the present invention, the pressure-resistant flexible pipe is folded to form a folded portion at one end, the folded portion is positioned in the gap between the walls, and the other end is formed. The open end of the flexible tube is located in the drainage space below the space between the walls, and the flexible tube is buried in the lower concrete of the underground double wall while leaving the open portion and the open end together. Since the portion of the flexible tube remaining in the lower concrete is used as a drainage tube, the flexibility of the flexible tube makes it possible to easily install the flexible tube while avoiding the arrangement of reinforcing bars, and if it becomes a hindrance in the cutting operation. In addition, concrete is cast in a state where the folded portion is located in the gap between the walls, so that the concrete does not enter the flexible tube.

[0007]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 2 is a perspective view for explaining a method of burying a double-walled water drainage pipe according to an embodiment of the present invention.

Before describing the method of embedding the drainage pipe of the underground double wall according to this embodiment, the structure of the underground double wall and the pressure-resistant flexible pipe to be used will be described. First, the underground double wall 1 according to the present embodiment is composed of an outer driving wall 2 and a partition wall 3 inside the outer driving wall 2, and a lower concrete 4 is provided directly below these two walls, and is below the underground double wall 1. The drainage space 7 is located inside the lower concrete 4 and directly below the horizontal slab 5, and is a drainage pipe which will be described later from the bottom surface of the gap 6 between the driving wall 2 and the partition wall 3. Drainage space 7 through flexible tube 9
It has a structure to discharge water.

The pressure-resistant flexible tube 9 used in the present embodiment has a substantially circular cross section, a plurality of rings for maintaining the shape are incorporated at predetermined intervals, and is made of a known material such as a synthetic resin having flexibility. The strength of the ring and the predetermined interval are set in consideration of maintaining the shape while withstanding the casting pressure during concrete casting.

Next, the method of embedding the drainage pipe for the underground double wall according to the present embodiment is performed in the following order. The flexible tube 9 is folded in a U-shape at substantially the center of a predetermined length to form a folded portion 9a at one end, and the folded portion 9a is formed.
Is positioned below the portion to be the inter-wall space 6, the two open ends 9b, 9b on the other end are positioned downward at the portion to be the drainage space 7, and the whole is inclined at a predetermined inclination angle. . In this way, the flexible tubes 9 are arranged at a plurality of positions as needed. Concrete is poured in this state to form the lower concrete 4, the driving wall 2, the partition wall 3, and the like. After the concrete is cast, the folded portion 9a and both open ends 9b, 9b are cut and removed as appropriate, and the flexible tube 9 which is a set of two of the remaining portions in the lower concrete 4 is used as a drainage tube.

The present invention is not limited to the above embodiment, and the flexible tube 9 may have an elliptical shape other than a circular cross section, and a coil spring may be used instead of the ring. Various modifications may be made without departing from the gist of the present invention.

[0012]

As described above, in the method of embedding the drainage pipe underground double wall according to the present invention, the pressure-resistant flexible pipe is folded to form a folded part at one end side, and the folded part is used as a power source. The open end at the other end is located in the drainage space below the gap between the walls in the gap between the wall and the partition wall. The flexible tube is buried in the lower concrete of the wall, and then the folded portion is cut off, and the portion of the flexible tube remaining in the lower concrete is used as a drainage tube. It can be easily installed by avoiding it, does not hinder cutting work, and has good workability due to the easy cutting of the flexible tube.In addition, concrete is struck while the folded portion is located in the gap between the walls. Installation, so that concrete does not enter the flexible tube. It was an effect.

[Brief description of the drawings]

FIG. 1 is a perspective view for explaining a method for embedding a drainage pipe for a double-walled underground wall according to an embodiment of the present invention.

FIG. 2 is a side sectional view for explaining a conventional method for burying a double-walled drainage pipe underground.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Underground double wall 2 Trunk wall 3 Partition wall 4 Lower concrete 5 Horizontal plate 6 Wall gap 7 Drainage space 9 Pressure-resistant flexible tube 9a Folded part 9b Open end

Claims (1)

(57) [Claims] 1. A method of embedding a drainage pipe for draining an underground double wall from a gap between walls of an underground double wall comprising an outer driving wall and an inner partition wall, wherein the pressure-resistant flexible pipe is provided. The folded portion is formed at one end side, the folded portion is located in the gap between the walls, and the open end at the other end is located in the drainage space below the gap between the walls, and the folded portion and the open portion are opened. After the flexible tube is buried in the lower concrete of the double-walled underground wall with both ends left, the folded portion is cut off, and the portion of the flexible tube remaining in the lower concrete is drained. A method for burying a drainage pipe in a double-wall underground.