JP2567352B2 - Method for embedding resin pipe and pipe support used in the 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 a resin pipe for forming a sewer and a pipe support used in the method.

[0002]

2. Description of the Related Art Conventionally, a sewer has a structure in which a steel segment is provided on the inner peripheral wall of a tunnel penetrating the ground, and a thick concrete wall is formed on the inner peripheral surface of the steel segment. In addition to poor workability due to concrete pouring, such sewers have a large internal resistance due to the rough skin of the concrete, a large inclination angle is required, and it must be thick to maintain watertightness. This is a disadvantage for avoiding existing structures because it does not happen. It also has low corrosion resistance to sewage and has a short service life. Therefore, construction of sewers using resin pipes (composite pipes made of synthetic resin) has been attempted. In that case, as for the resin pipe, a steel segment is provided on the inner peripheral wall of the tunnel penetrating in the ground, and the resin pipe is arranged in the space surrounded by the steel segment for centering. As shown in, while the pillow material 10 is applied to the lower portion, the wire 18 is wound around the resin pipe 9 in an inverted U shape and tightened with turnbuckles 19 and 19, etc.
The batten 20 is partially inserted in the gap with the steel segment 1,
.. are sandwiched and fixed by wedges 21, and the outer circumference of the resin pipe 9 is filled with air mortar 17 to be embedded.

[0003]

Since a large buoyancy acts on the resin pipe by filling it with air mortar, the resin pipe is deformed in an attempt to shake off the restraint of the wire and the wire also extends. If the distance between the steel segment and the steel segment is partially widened due to deformation, the batten supporting that part will fall off, so the part that lost its support due to the fall of the batten will be more likely to deform, This is a fatal problem because there is a high possibility that it will be hardened with mortar with misalignment, and once it is hardened with mortar, it cannot be corrected. Further, since the batten remains in the mortar, there is a concern that the mortar structure may lack strength due to decay and hollowing of the part.

[0004]

SUMMARY OF THE INVENTION The present invention firmly and reliably supports a resin pipe and enables burying as designed. The structure is such that the inner wall of a tunnel penetrating underground is provided. A steel segment was provided, and a resin pipe was placed in the space surrounded by the steel segment to perform centering, a pillow material was applied to the lower part to maintain that state, and the lower part was removed. The outer periphery is supported by pressing the steel segment toward the center with a pipe support fixed at the base end, and a resin pipe burying method for filling the outer periphery of the resin pipe with air mortar, and a head portion, A holding bolt having a contact plate that comes into contact with the outer periphery of the pipe to be embedded, a nut screwed into the screw portion of the holding bolt, and a base of a tubular body into which the screw portion of the holding bolt is loosely inserted, Holders with joints to steel segments In the composed pipe support between. The pipe support is made of metal.

[0005]

[Function] Since the base end of the pipe support that presses and supports the pipe is fixed to the steel segment, the pipe is deformed by buoyancy and does not fall off even if the space between it and the steel segment widens. The supporting function is maintained. Further, since the length of the pipe support can be adjusted by rotating the nut, the supporting work is easy, and the screw part is loosely inserted into the cylindrical base part to give the pressing direction a degree of freedom. This makes it possible to cope with the centers of the pipe and the steel segment being offset. And since the pipe support is made of metal, there is no concern about decay, and rather a reinforcing effect can be expected.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a method for burying a resin pipe according to the present invention and a pipe support used in the method for burying the resin pipe will be described with reference to the drawings. Reference numeral 1 denotes a steel segment, which is framed along the inner wall surface of a tunnel 2 penetrating underground, and a rail 3 for traveling a pipe carrier is laid on the inner bottom surface of the tunnel 2. It is open to the vertical axis 4 for pipe loading. A pipe hanging crane 5 is erected on the ground so as to be able to travel along a track 5a including immediately above the vertical shaft 4, and an air mortar injection plant 6 is provided adjacent to the vertical shaft 4. . Further, air mortar injection pipes, power lines, communication cables, etc. are piped and wired in the steel segment 1 and the vertical resistance 4, and in the vertical resistance 4, which is an extension of the rail 3, a carriage 7, an electric vehicle 8, etc. Is waiting.

The burying work of the resin pipe is started from the innermost part of the tunnel 2. First, unnecessary pipes and base materials constructed at the burying site of the resin pipe are removed, and then the crane 5 is used to vertically extend from the ground. The resin pipe 9 carried in the anti-4 is carried by the dolly 7
Then, it is sent into the steel segment 1 by the electric vehicle 8.
When the resin pipe 9 arrives at the predetermined position, the carriage 7 is retracted, the resin pipe is centered to adjust the position and posture, and the pillow 10 is applied to the lower portion to maintain the state, and the pillow The outer periphery excluding the lower part to which the material 10 is applied is pressed and supported toward the center by the pipe support 11 having the base end fixed to the steel segment 1 (FIG. 2).

As shown in FIG. 3, the pipe support 11 has a holding bolt 13 having a contact plate 12 at the tip of its head, which has the same curvature as the outer peripheral curved surface of the resin pipe to be embedded, and the holding bolt. Nut 1 screwed into the screw portion 13a of the screw 13
4 and a holder 16 having a mount 15 as a coupling member with a steel segment at the base of the tubular body 16a. The screw portion 13a of the presser bolt 13 is loosely inserted into the holder 16 and the nut 14 is attached. By rotating, the protrusion length of the presser bolt 13 can be adjusted, and the mount 15 is welded to the steel segment 1 (FIG. 4). Incidentally, 14a shown in the drawing is a washer.

When the resin pipe 9 is securely fixed, the gap between the tunnel 2 and the resin pipe 9 is sealed, and finally the outer periphery of the resin pipe 9 is filled with air mortar 17. When the mortar solidifies, carry in the next resin pipe, connect it with the resin pipe buried earlier, and then center it.
Fixing and filling of mortar are repeated. The pipe support 11 is made entirely of iron and is embedded in the mortar.

The resin pipe buried in this way is deformed by the buoyancy acting by the injection of air mortar,
Even if the abutting plate is separated from the pipe surface, the pipe support does not fall off, so that the deformation is small and the displacement does not occur.

Even if the centers of the resin pipe and the steel segment that are centered are deviated from each other, as shown in FIG. 5, there is a large degree of freedom in the pressing direction of the pipe support, so that they can be reliably supported. Is greatly eccentric with respect to the steel segment, it can be dealt with by simply cutting the threaded portion of the holding bolt and the cylindrical portion of the holder short. In the embedding method of the present invention, the method of carrying in the resin pipe, the environment around the tunnel, and the structure and shape of the pipe support are not limited to the examples, but when fixing the resin pipe, the pipe of the present invention is used. It is desirable to utilize supports. In the pipe support of the present invention, a nut is provided with a handle protruding in a cross direction so that the nut can be rotated without using a wrench, or a mount is provided with a bolt insertion hole so that an additional function is added so as to be coupled with a bolt. You can also

[0012]

According to the burying method of the present invention, the resin pipe hardened with mortar can be accurately buried in the ground, and the construction reliability is high. Further, by adopting the pipe support fitting of the present invention, the workability is greatly improved and the durability is also improved.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing an outline of a pipe burying workshop according to the present invention.

FIG. 2 is an explanatory view of fixing a pipe.

FIG. 3 is an explanatory view of a pipe support tool.

FIG. 4 is an explanatory view exemplifying a pipe supporting operation by a pipe supporting tool.

FIG. 5 is a functional explanatory diagram of a pipe support tool.

FIG. 6 is an explanatory diagram of a conventional example.

[Explanation of symbols]

1 ・ ・ Steel segment, 2 ・ ・ Tunnel, 3 ・ ・ Rail, 4 ・ ・ Vertical resistance, 5 ・ ・ Crane, 5a ・ ・ Track, 6 ・
・ Air mortar injection plant, 7 ・ ・ Bogie, 8 ・ ・ Electric vehicle, 9 ・ ・ Resin pipe, 10 ・ ・ Pillow material, 11 ・ ・ Pipe support, 12 ・ ・ Abutment plate, 13 ・ ・ Holding bolt, 1
3a ··· screw part, 14 · · nut, 14a · · washer, 15 · · mount, 16 · · holder, 17 · · air mortar, 18 · wire, 19 · turnbuckle,
20 ... Batten, 21 ... Wedge.

Claims (2)

(57) [Claims] 1. A steel segment is provided on an inner peripheral wall of a tunnel penetrating in the ground, a resin pipe is arranged in a space surrounded by the steel segment for centering, and a pillow material is provided at a lower portion. While maintaining this state by applying it, the outer periphery excluding the lower part is pressed and supported toward the center by a pipe support tool whose base end is fixed to the steel segment, and is supported on the outer periphery of the resin pipe. A method for burying a resin pipe, characterized by filling mortar. 2. A holding bolt having a contact plate on its head, which comes into contact with the outer circumference of a resin pipe to be buried, a nut screwed into the screw portion of the holding bolt, and a screw portion of the holding bolt. A pipe support made of metal, which is composed of a holder having a joint with a steel segment on a base of a tubular body into which the pipe is loosely inserted.