JP7062859B2 - Pipeline structure, rehabilitation structure of existing pipes, and method of manufacturing pipeline structure - Google Patents

Description

The present invention relates to a pipeline structure, a rehabilitation structure of an existing pipe, and a method for manufacturing a pipeline structure.

Conventionally, in the fields of sewage and agricultural water, existing pipes for transporting water have been buried underground. If the existing pipe is used for a long period of time, the existing pipe will deteriorate, so it is necessary to rehabilitate the existing pipe. (See, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2017-129161

In order to rehabilitate an existing pipe, it is considered to insert a pipe structure in which a pipe member and a tubular connecting member are alternately connected to lengthen the total length of a plurality of pipe members into the existing pipe. When water is transported in the pipeline structure, water leakage from the existing pipe is suppressed and the existing pipe is rehabilitated.
However, when the pipe member is inserted into the connecting member, if the pipe member is tilted with respect to the axis of the connecting member, there is a problem that it is difficult to insert the pipe structure along the axis.

The present invention has been made in view of such a problem, and has a pipeline structure that facilitates insertion along the axis of the connecting member when inserted into the connecting member, and an existing pipe having this pipeline structure. It is an object of the present invention to provide a rehabilitated structure of the above, and a method of manufacturing a pipeline structure for manufacturing the pipeline structure.

In order to solve the above problems, the present invention proposes the following means.
The pipeline structure of the present invention is a pipeline structure including a pipe member inserted into an existing pipe and used, and a connecting member formed in a tubular shape and into which the pipe member is inserted and connected to the pipe member. The pipe member includes a pipe body, a water stop portion formed in the pipe body, and a connecting portion formed in the pipe body closer to the tip of the pipe body than the water stop portion. The pipe body includes a guide portion formed closer to the tip than the connecting portion, and the outer diameter of the connecting portion gradually decreases as it approaches the tip, and the connecting member has a tubular shape. A sealing member that is formed and has an inner diameter larger than the outer diameter of the water stop portion and is provided on the inner peripheral surface of the end portion of the connection body and is in liquid-tight contact with the outer peripheral surface of the water stop portion. The sealing member has an annular protrusion, the inner diameter of the protrusion is equal to or larger than the outer diameter of the guide portion, and the inner diameter of the protrusion is the water stop portion. It is characterized by being smaller than the outer diameter .

According to the present invention, when the pipe member is inserted into the connecting member, the pipe member is inserted with respect to the connecting member along the outer peripheral surface of the guide portion, the outer peripheral surface of the connecting portion, and the outer peripheral surface of the waterproof portion. Will be done. Then, for example, the water conveyed in the pipe member is sealed between the water stop portion and the connecting member, so that the water is prevented from leaking to the outside of the pipe member.
At this time, since the outer diameter of the connecting portion gradually decreases as it approaches the tip, the axis of the connecting member and the axis of the connecting portion coincide with each other as the connecting portion is inserted into the connecting member. Therefore, when the pipe member is inserted into the connecting member, the pipe member can be easily inserted along the axis of the connecting member.
Further, it is possible to construct a pipeline structure by using a pipe member that can be easily inserted along the axis of the connecting member when it is inserted into the connecting member.
Further, by bringing the sealing member into contact with the outer peripheral surface of the water blocking portion, it is possible to more reliably suppress the leakage of water from between the connecting member and the pipe member to the outside of the pipeline structure.

Further, in the above pipeline structure, the outer diameter of the connection body and the outer diameter of the pipe body of the pipe member may be equal to each other.

Further, in the above-mentioned pipeline structure, the outer diameter of the water-stopping portion is constant regardless of the position in the axial direction of the pipe body, and the outer diameter at the end of the connecting portion on the water-stopping portion side is the above-mentioned. The outer diameter of the guide portion is equal to the outer diameter of the water stop portion, the outer diameter of the guide portion is constant regardless of the position in the axial direction, and the outer diameter at the end of the connecting portion on the guide portion side is the outer diameter of the guide portion. May be equal to.

Further, the rehabilitation structure of the existing pipe of the present invention includes the existing pipe, the pipeline structure according to claim 2 or 3 inserted in the existing pipe, and the existing pipe extending in the axial direction of the existing pipe. A tubular member that is in contact with the inner peripheral surface and the outer peripheral surface of the pipeline structure and is filled with a filler inside is provided, and the tubular member includes an outer peripheral surface and an inner peripheral surface of the tubular member. It is characterized in that a through hole is formed through the space through which the filler before curing is passed .
According to the present invention, it is possible to prevent the pipeline structure from being displaced in the radial direction of the existing pipe with respect to the existing pipe by contacting the tubular member filled with the filler with the existing pipe and the pipeline structure, respectively. Can be done.

Further, the method for manufacturing a pipeline structure of the present invention is a method for manufacturing a pipeline structure according to the above description, wherein the pipe member is attached to the connection member and the axis of the connection member is used. It is characterized in that a connection step of connecting the connecting member and the pipe member by inserting along the line is performed.
According to the present invention, when the pipe member is inserted into the connecting member at the time of manufacturing the pipeline structure, the pipe member can be easily inserted with respect to the axis of the connecting member.

According to the pipeline structure, the rehabilitation structure of the existing pipe, and the method for manufacturing the pipeline structure of the present invention, it is possible to facilitate insertion along the axis of the connecting member when inserting into the connecting member.

It is sectional drawing which looked at the rehabilitation structure of the existing pipe of one Embodiment of this invention from the side view. It is sectional drawing of the cutting line AA in FIG. It is sectional drawing of the upper half when the pipeline structure in the rehabilitation structure of the existing pipe is viewed from the side. It is sectional drawing of the upper half when the pipe member in the same pipeline structure is seen from the side. It is sectional drawing of the upper half when the connecting member in the same pipeline structure is seen from the side. It is sectional drawing from the side view explaining the manufacturing method of the pipeline structure. It is a perspective view which shows the example of the hose used for the rehabilitation structure of the existing pipe. It is sectional drawing explaining the method of rehabilitation of an existing pipe. It is a flowchart which shows the rehabilitation method of an existing pipe.

Hereinafter, an embodiment of the rehabilitation structure of the existing pipe according to the present invention will be described with reference to FIGS. 1 to 9. As shown in FIGS. 1 and 2, the rehabilitation structure 1 of the existing pipe of the present embodiment includes the existing pipe 11, the pipeline structure 16 of the present embodiment, and the hose (tubular member) 36.
The existing pipe 11 is buried in the ground. The existing pipe 11 is arranged so as to extend along the horizontal plane. The existing pipe 11 is formed of a steel pipe, a Hume pipe, or the like.

The pipeline structure 16 is inserted into the existing pipe 11. As shown in FIGS. 1 and 3, the pipeline structure 16 includes a pipe member 17 and a connecting member 26 of the present embodiment. The pipe member 17 and the connecting member 26 are used by being inserted into the existing pipe 11. The number of pipe members 17 and the number of connecting members 26 constituting the pipeline structure 16 are not particularly limited as long as they are 1 or more.
As shown in FIG. 4, the pipe member 17 is opposite to the pipe body 18, the first insertion port 19A formed at the first end (tip) 18a of the pipe body 18, and the first end 18a of the pipe body 18. It is provided with a second insertion port 19B formed at the second end (base end) 18b on the side. The tube body 18 is formed in a tubular shape.
In the present embodiment, the configuration of the first insertion slot 19A and the configuration of the second insertion slot 19B are the same as each other. Therefore, the configuration of the first insertion slot 19A is shown by adding the capital letter "A" to the numbers. The configuration corresponding to the first insertion slot 19A of the second insertion slot 19B is shown by adding the capital letter "B" to the same number as the first insertion slot 19A. As a result, duplicate explanations will be omitted. For example, the first water stop portion 20A described later of the first insertion port 19A and the second water stop portion 20B of the second insertion port 19B have the same configuration. The same applies to the sealing members 28A and 28B described later.

The first insertion port 19A has a first water stop portion (water stop portion) 20A, a first connecting portion (connecting portion) 21A, and a first guide portion (guide portion) 22A. The first water stop portion 20A, the first connecting portion 21A, and the first guide portion 22A are each formed in a cylindrical shape.
The outer diameter of the first water stop portion 20A is smaller than the outer diameter of the pipe body 18. The outer diameter of the first water stop portion 20A is constant regardless of the position of the pipe body 18 in the axis C direction.

The first connecting portion 21A is formed in the pipe main body 18 closer to the first end 18a of the pipe main body 18 than the first waterproof portion 20A. The outer peripheral surface of the first connecting portion 21A is connected to the outer peripheral surface of the first water blocking portion 20A. The outer diameter of the first connecting portion 21A gradually decreases as it approaches the first end 18a. In other words, the first connecting portion 21A has a tapered shape in which the outer diameter becomes smaller as it approaches the first end 18a.
The first guide portion 22A is formed in the pipe body 18 closer to the first end 18a than the first connecting portion 21A. The outer peripheral surface of the first guide portion 22A is connected to the outer peripheral surface of the first connecting portion 21A. The outer diameter of the first guide portion 22A is constant regardless of the position in the axis C direction. In other words, the first guide portion 22A is a straight tube.
The outer diameter of the first guide portion 22A may gradually decrease as it approaches the first end 18a.
The angle θ ₁ formed by the outer peripheral surface of the first guide portion 22A and the axis C on the second end 18b side of the pipe body 18 is the angle formed by the outer peripheral surface of the first connecting portion 21A and the axis C on the second end 18b side. Less than θ ₂ . In this example, the angle θ ₁ is approximately 0 °. For example, the angle θ ₂ is 15 °. The angle θ ₁ also includes a case where the outer peripheral surface of the first guide portion 22A and the axis C do not form an angle of a positive value and are completely 0 °.

The first water stop portion 20A, the first connecting portion 21A, and the first guide portion 22A are arranged coaxially with the pipe body 18. The inner diameter of the pipe body 18, the inner diameter of the first water stop portion 20A, the inner diameter of the first connecting portion 21A, and the inner diameter of the first guide portion 22A are equal to each other.
The second insertion port 19B includes a first water stop portion 20A and a first connection portion 21A of the first insertion port 19A, and a second water stop portion 20B and a second connection portion 21B configured in the same manner as the first guide portion 22A. , Has a second guide portion 22B. The pipe member 17 is configured to be plane-symmetrical with respect to a reference plane passing through the center in the axis C direction.
The tube body 18 and the insertion ports 19A and 19B are integrally formed of vinyl chloride, polypropylene, glass fiber reinforced resin mortar (FRP), or the like.

As shown in FIG. 5, the connecting member 26 is formed in a cylindrical shape. The connecting member 26 includes a connecting main body 27 and a pair of sealing members 28A and 28B. The axis of the connecting member 26 coincides with the axis C of the pipe body 18.
The connection body 27 is formed in a cylindrical shape. The outer diameter of the connecting main body 27 and the outer diameter of the pipe main body 18 of the pipe member 17 are equivalent to each other. The connection body 27 is made of stainless steel, vinyl chloride, or the like. The inner diameter of the connection body 27 is larger than the outer diameter of the first water stop portion 20A of the pipe member 17.

The first sealing member (sealing member) 28A has a base 29A and protrusions 30A and 31A. The base 29A is formed in a cylindrical shape. The protrusions 30A and 31A project from the inner peripheral surface of the base 29A. The first protrusion 30A is arranged closer to the end of the connection body 27 than the second protrusion 31A. The protrusions 30A and 31A are arranged at intervals in the axis C direction. In this example, the first guide portion 22A has two protrusions 30A and 31A. However, the number of protrusions included in the first guide portion 22A is not particularly limited, and may be one or three or more.
The length L ₁ in the axis C direction of the protrusions 30A and 31A as a whole may be equal to or shorter _than the length L ₂ (see FIG. 4) of the first guide portion 22A in the axis C direction. preferable. It is preferable that the inner diameters of the protrusions 30A and 31A are equal to the outer diameter of the first guide portion 22A of the pipe member 17 or larger than the outer diameter of the first guide portion 22A. The inner diameters of the protrusions 30A and 31A are smaller than the outer diameter of the first water stop portion 20A.
The base 29A and the protrusions 30A and 31A are integrally formed of a silicone resin, synthetic rubber, an elastomer or the like.

The base 29A of the first sealing member 28A is provided on the inner peripheral surface of the end portion of the connection main body 27. The base 29A and the connection main body 27 are fixed by an adhesive or the like (not shown). The second sealing member (sealing member) 28B has a base 29A of the first sealing member 28A, a base 29B configured in the same manner as the protrusions 30A and 31A, and the protrusions 30B and 31B. There is.

As shown in FIG. 3, in the pipeline structure 16, the connecting member 26 is connected to the pipe member 17 by inserting the pipe member 17 into the connecting member 26. The second sealing member 28B of the connecting member 26 is liquid-tight on the outer peripheral surface of the first water blocking portion 20A of the pipe member 17 due to the elastic deformation of the protrusions 30B and 31B outward in the radial direction of the connecting member 26. Is in contact with.

In the method of laying (manufacturing method) the pipeline structure 16 configured as described above, as shown in FIG. 6, the pipe member 17 is inserted into the connecting member 26 along the axis C, and the connecting member 26 and the pipe are connected. A connection step for connecting the member 17 is performed. In the connection step, the pipe member 17 is inserted into the pipe member 17 from the first guide portion 22A side. The pipe member 17 is guided along the outer peripheral surface of the first guide portion 22A with respect to the connection member 26. Since the outer diameter of the first guide portion 22A is constant regardless of the position in the axis C direction, the angle θ ₁ formed by the outer peripheral surface of the first guide portion 22A and the axis C becomes approximately 0 °, and the pipe member 17 Is inserted into the connecting member 26 along the axis C.
Subsequently, the pipe member 17 is inserted into the connecting member 26 along the outer peripheral surface of the first connecting portion 21A and the outer peripheral surface of the first water blocking portion 20A. Since the first connecting portion 21A is formed between the radial step between the first guide portion 22A and the first water stop portion 20A, the connecting member 26 can get over this step. Since the outer diameter of the first connecting portion 21A gradually decreases as it approaches the first end 18a, the axis of the connecting member 26 and the axis of the first connecting portion 21A as the first connecting portion 21A is inserted into the connecting member 26. Will match.

Since the inner diameters of the protrusions 30A and 31A are equal to or larger than the outer diameter of the first guide portion 22A, when the first guide portion 22A is inserted into the first sealing member 28A of the connecting member 26, the first sealing member 28A The first guide portion 22A can be easily inserted while suppressing the deformation of the guide portion 22A. Since the inner diameters of the protrusions 30A and 31A are smaller than the outer diameter of the first water stop portion 20A, as shown in FIG. 3, the protrusions 30B and 31B are deformed in the radial direction of the connecting member 26, and the pipeline structure 16 The space between the first water stop portion 20A and the second sealing member 28B of the connection main body 27 is held liquidtightly.
The inner diameters of the protrusions 30A and 31A may be the same as the outer diameter of the first guide portion 22A, or may be slightly smaller than the outer diameter of the first guide portion 22A.
By the above steps, the connecting member 26 and the pipe member 17 are connected.

As shown in FIGS. 1 and 2, the hose 36 extends in the axial direction of the existing pipe 11 and is in contact with the inner peripheral surface of the existing pipe 11 and the outer peripheral surface of the pipeline structure 16, respectively. For example, as the hose 36, a hose having a flat shape and being flexibly deformable is used. For example, the hose 36 is preferably a sunny hose (registered trademark, manufactured by Catex Co., Ltd.) shown in FIG. 7. The sunny hose is formed from chemical fibers, soft vinyl chloride and the like as raw materials. FIG. 7 shows a state in which the hose 36 alone is wound. As shown in FIG. 2, it is preferable that the hose 36 is formed with a through hole 36a. The through hole 36a penetrates between the outer peripheral surface and the inner peripheral surface of the hose 36.
The hose 36 is arranged on the upper part of the outer peripheral surface of the pipeline structure 16. The pipeline structure 16 and the hose 36 are fixed by a fixing portion 37 such as a tape or an adhesive.
A mortar (filler) 38 is filled between the inner peripheral surface of the existing pipe 11 and the outer peripheral surface of the pipeline structure 16 inside the hose 36 and outside the hose 36. When the through hole 36a is not formed in the hose 36, the mortar 38 is filled only inside the hose 36, and the pipeline structure 16 is fixed to the existing pipe 11. As a result, it is possible to prevent the pipeline structure 16 from surfacing with respect to the existing pipe 11.

Next, a method of rehabilitating the existing pipe 11 of the present embodiment for rehabilitating the existing pipe 11 by using the pipeline structure 16 configured as described above will be described. First, the configuration around the existing pipe 11 will be described with reference to FIG.
A plurality of manholes 41 are connected to the existing pipe 11. The plurality of manholes 41 are arranged at intervals in the longitudinal direction of the existing pipe 11. In the following, of the plurality of manholes 41, one manhole 41 is also referred to as a manhole 41a, and one of the manholes 41 adjacent to the manhole 41a is also referred to as a manhole 41b.

The mounting pipe 42 may be arranged between the manholes 41 adjacent to each other in the longitudinal direction of the existing pipe 11. The mounting pipe 42 extends diagonally upward or upward from the existing pipe 11. A basin 43 for observing the inside of the existing pipe 11 is attached to the upper end of the attachment pipe 42 at a position corresponding to the height of the ground G.
A first cable drum 45 is arranged on the ground G near the opening of the manhole 41a. A second cable drum 46 is arranged on the ground G near the opening of the manhole 41b.

Next, each step of the rehabilitation method of the existing pipe 11 will be described. FIG. 9 is a flowchart showing the rehabilitation method S of the existing pipe 11.
First, in the cable wiring step (step S1 shown in FIG. 9), as shown in FIG. 8, the cable 48 unwound from the second cable drum 46 is pulled into the manhole 41a and wound around the first cable drum 45.
Next, in the first arrangement step (step S3), the head pipe 49, the connecting member 26, and the pipe member 17 are arranged one by one in the existing pipe 11 through, for example, the manhole 41a. The leading pipe 49 has a tapered shape at the second end with respect to the configuration of the pipe member 17. The cable 48 is connected to the head pipe 49 and the like.

Next, the above-mentioned connection step (step S5, manufacturing method of the pipeline structure 16) is performed to manufacture the pipeline structure 16 in the existing pipe 11. In this connection step S5, the hose 36 is attached to the upper part of the pipeline structure 16 by the fixing portion 37.
Next, in the pipeline insertion step (step S7), the pipeline structure 16 is inserted into the inner side (manhole 41b side) of the existing pipe 11. At this time, the pipeline structure 16 may be inserted into the existing pipe 11 by winding the cable 48 with the second cable drum 46.
If the leading pipe 49 and the insertion pipe such as the pipe member 17 are caught in the existing pipe 11, the cable 48 can be pulled back by the first cable drum 45.

Next, in step S9, it is determined whether or not the pipeline structure 16 has a predetermined length or more. For example, the predetermined length is the length along the existing pipe 11 from the manhole 41a to the manhole 41b. The length of the pipeline structure 16 can be obtained from the number of the pipe members 17 and the connecting members 26 connected to each other.
If it is determined in step S9 that the pipeline structure 16 has a predetermined length or more (Yes), the process proceeds to step S13. On the other hand, if it is determined in step S9 that the pipeline structure 16 does not have a predetermined length or more (No), the process proceeds to step S11.

In the second arrangement step (step S11), for example, the connecting member 26 and the pipe member 17 are arranged one by one in the existing pipe 11 through the manhole 41a.
Next, the connection step S5 is performed, and the connection member 26 and the pipe member 17 are newly connected to the already manufactured pipeline structure 16 to lengthen the pipeline structure 16. The hose 36 is attached to the newly connected connecting member 26 and pipe member 17.
Next, the pipeline insertion step S7 is performed, and the pipeline structure 16 is inserted into the existing pipe 11. When the pipeline insertion step S7 is completed, the process proceeds to step S9.
In this way, the second arrangement step S11, the connection step S5, and the pipeline insertion step S7 are repeated until the pipeline structure 16 has a predetermined length or more.
When it is determined in step S9 that the pipeline structure 16 has a predetermined length or more (Yes), the leading pipe 49 and the cable 48 are removed from the pipeline structure 16.

In the filler injection step (step S13), the mortar 38a before the mortar 38 is cured is injected into the hose 36 (see FIG. 2). The injected mortar 38a is supplied into the hose 36 and at the same time flows to the outside of the hose 36 through the through hole 36a formed in the hose 36, and flows to the inner peripheral surface of the existing pipe 11 and the outer peripheral surface of the pipeline structure 16. Supplied during. When the mortar 38a dries and hardens, it becomes the mortar 38. Since the mortar 38 is filled in the hose 36 and the existing pipe 11, the pipeline structure 16 is less likely to be displaced in the radial direction of the existing pipe 11 with respect to the existing pipe 11.
With the above, all the steps of the rehabilitation method S of the existing pipe 11 are completed, and the existing pipe 11 is rehabilitated.

As described above, according to the pipe member 17 of the present embodiment, when the pipe member 17 is inserted into the connecting member 26, the pipe member 17 is attached to the outer peripheral surface of the first guide portion 22A with respect to the connecting member 26. , Is inserted along the outer peripheral surface of the first connecting portion 21A and the outer peripheral surface of the first water blocking portion 20A. Then, the water conveyed in the pipe member 17 is sealed between the first water stop portion 20A and the connecting member 26, so that the water is suppressed from leaking to the outside of the pipe member 17.
At this time, since the outer diameter of the first connecting portion 21A gradually decreases as it approaches the first end 18a, the axis of the connecting member 26 and the first connecting portion are inserted as the first connecting portion 21A is inserted into the connecting member 26. It comes to coincide with the axis of 21A. Therefore, when the pipe member 17 is inserted into the connecting member 26, it is possible to prevent the pipe member 17 from tilting with respect to the axis of the connecting member 26.

The outer diameter of the first guide portion 22A is constant regardless of the position in the axis C direction, and the angle θ ₁ formed by the outer peripheral surface of the first guide portion 22A and the axis C is the outer peripheral surface of the first connecting portion 21A and the axis. It is smaller than the angle θ ₂ formed by C and is almost 0 °. Therefore, the pipe member 17 can be inserted into the connecting member 26 along the axis C.
On the other hand, in the conventional pipe member in which the pipe member does not have the first guide portion 22A and the first connecting portion 21A is formed at the first end of the pipe member, the insertion of the pipe member is as follows. .. When the pipe member is inserted into the connecting member 26, the pipe member is tilted with respect to the axis C. Therefore, an excessive insertion force is required for insertion, which makes it difficult to insert the pipe member.

Further, according to the pipeline structure 16 of the present embodiment, the pipe member 17 is suppressed from being tilted at the time of insertion, and after the insertion, it is possible to follow the unevenness and meandering of the existing pipe 11.
The connecting member 26 includes a connecting main body 27 and a second sealing member 28B. By bringing the second sealing member 28B into contact with the outer peripheral surface of the first water stop portion 20A of the pipeline structure 16, water leaks from between the connecting member 26 and the pipe member 17 to the outside of the pipeline structure 16. It can be suppressed more reliably.

Further, according to the rehabilitation structure 1 of the existing pipe 11 of the present embodiment, the existing pipe 11, the pipeline structure 16, and the hose 36 containing the mortar 38 are provided. When the hose 36 containing the mortar 38 comes into contact with the existing pipe 11 and the pipeline structure 16, the pipeline structure 16 can be prevented from being displaced in the radial direction of the existing pipe 11 with respect to the existing pipe 11. can.
Further, according to the method for manufacturing the pipeline structure 16 of the present embodiment, when the pipe member 17 is inserted into the connecting member 26 when the pipeline structure 16 is manufactured, the pipe is connected to the axis C of the connecting member 26. The member 17 can be easily inserted.

Further, in the rehabilitation method S of the existing pipe 11, the connection step S5 is performed after the first placement step S3. Therefore, the pipeline structure 16 can be manufactured in the existing pipe 11 to rehabilitate the existing pipe 11.
After attaching the hose 36 to the pipeline structure 16 in the connection step S5, the pipeline insertion step S7 is performed. As a result, the hose 36 can be easily inserted into the existing pipe 11 together with the pipeline structure 16.

Although one embodiment of the present invention has been described in detail with reference to the drawings, the specific configuration is not limited to this embodiment, and the configuration is changed, combined, or deleted without departing from the gist of the present invention. Etc. are also included.
For example, in the above-described embodiment, the tube member 17 may be configured so that the second insertion port 19B is not formed and only the first insertion port 19A is formed in the tube member 17. Similarly, the connecting member 26 may be configured to include only the second sealing member 28B without the first sealing member 28A. This is because even with such a configuration, one connecting member 26 and one pipe member 17 can be connected so as not to leak water to form the pipeline structure 16.

Although the tubular member is a hose 36 made of resin, the tubular member may be made of a relatively soft metal such as aluminum.
In the rehabilitation method S of the existing pipe 11, even if the hose 36 is not attached to the pipeline structure 16 in the connection step S5 and the tubular member insertion step of inserting the hose 36 into the existing pipe 11 is performed after the pipeline insertion step. good.

1 Rehabilitation structure of existing pipes 11 Existing pipes 16 Pipeline structure 17 Pipe members 18 Pipe body 18a First end (tip)
20A 1st water stop (water stop)
21A 1st connecting part (connecting part)
22A 1st guidance section (guidance section)
26 Connection member 27 Connection body 28A First sealing member (sealing member)
28B 2nd sealing member (sealing member)
36 hose (tubular member)
38 Mortar (filler)
C-axis line S5 Connection process θ ₁ , θ ₂ Angle

Claims (5)

Pipe members used by inserting into existing pipes,
A connecting member formed in a cylindrical shape, into which the pipe member is inserted and connected to the pipe member,
It is a pipeline structure equipped with
The pipe member is
With the tube body
The water stop portion formed on the pipe body and
In the pipe body, a connecting portion formed closer to the tip of the pipe body than the water stop portion,
In the pipe body, a guide portion formed closer to the tip than the connecting portion,
Equipped with
The outer diameter of the connecting portion gradually decreases as it approaches the tip.
The connecting member is
A connection body that is formed in a cylindrical shape and whose inner diameter is larger than the outer diameter of the water stop portion.
A sealing member provided on the inner peripheral surface of the end portion of the connection body and in liquid-tight contact with the outer peripheral surface of the water stop portion.
Have,
The sealing member has an annular protrusion and has an annular protrusion.
The inner diameter of the protrusion is equal to or larger than the outer diameter of the guide portion.
A pipeline structure in which the inner diameter of the protrusion is smaller than the outer diameter of the water stop. The pipeline structure according to claim 1, wherein the outer diameter of the connection body and the outer diameter of the pipe body of the pipe member are equivalent to each other. The outer diameter of the water stop portion is constant regardless of the position of the pipe body in the axial direction.
The outer diameter of the connecting portion on the water-stopping portion side is equal to the outer diameter of the water-stopping portion.
The outer diameter of the guide portion is constant regardless of the position in the axial direction.
The pipeline structure according to claim 1 or 2, wherein the outer diameter at the end of the connecting portion on the guide portion side is equal to the outer diameter of the guide portion. With the existing pipe
The pipeline structure according to any one of claims 1 to 3 inserted into the existing pipe.
A tubular member that extends in the axial direction of the existing pipe and is in contact with the inner peripheral surface of the existing pipe and the outer peripheral surface of the pipeline structure and is filled with a filler inside.
Equipped with
A rehabilitation structure of an existing pipe in which a through hole is formed in the tubular member so as to penetrate between the outer peripheral surface and the inner peripheral surface of the tubular member and allow the filler to pass through before being cured. A method for manufacturing a pipeline structure according to any one of claims 1 to 3.
A method for manufacturing a pipeline structure in which a pipe member is inserted into the connection member along an axis of the connection member to perform a connection step of connecting the connection member and the pipe member.

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