JP4580294B2 - Water sealing structure of lining pipe and water stopping method of lining pipe - Google Patents

Description

  The present invention relates to a water-stopping structure for a lining pipe and a water-stopping method for the lining pipe, in which a plurality of lining pipes are sequentially connected in the axial direction and pushed into the ground to form a lining for an underground pipe line.

  In general, a propulsion method is known in which a tubular propelling pipe is pushed into the ground laterally from a shaft, and a propelling pipe is sequentially added behind the propelling pipe to construct a underground pipe having a predetermined length.

  The propulsion pipe used in this propulsion method has a collar protruding in the outer periphery of the rear end of the propulsion pipe of a predetermined length, and the collar when the front end is inserted into the collar of the front propulsion pipe on the outer periphery of the front end. It was manufactured at the factory with a rubber ring attached to the inner wall surface to maintain water-stopping properties and transported to the construction site in this state.

  The maximum diameter of the propulsion pipe in this case is restricted by the height restriction of the Road Traffic Law during transportation, and the propulsion pipe whose diameter exceeds the height restriction of the Road Traffic Law cannot be used in the loaded state. there were.

  On the other hand, in recent years, development of a propulsion pipe having a diameter exceeding the maximum diameter has been demanded by promoting cost reduction measures.

Therefore, a proposal has been made to increase the diameter of the propulsion pipe by using a split propulsion pipe divided into two in the circumferential direction, bringing it into the construction site in a divided state and integrating it at the site (patent) Reference 1).
JP 2004-183289 A

  However, if the site for the shaft is small and the temporary storage space for the assembled propulsion pipe cannot be secured, the assembly time of the split propulsion pipe will affect the construction cycle, leading to a prolonged construction period and an increase in construction cost. It becomes.

  In particular, since the ratio of the curing time of the adhesive when attaching the rubber ring to the assembly time is large, shortening of the curing period or improvement of the mounting method is required.

  Specifically, the rubber ring is mounted by applying an epoxy resin to the rubber ring mounting location after assembling the split propelling pipe on site, and this epoxy resin is cured and developed until strength is developed. Since 3 to 5 hours are required, if the assembly time of the split propulsion pipe exceeds the cycle time of the propulsion work and temporary storage space for the assembled propulsion pipe cannot be secured, it will be propelled after the assembly is completed. The amount cannot be secured.

  In addition, unlike the conventional propulsion pipe, the split propulsion pipe has a joint surface to be integrated, so a sealing material is applied in the axial direction of the joint surface to achieve water tightness. It is necessary to ensure water tightness between the end and the rubber ring.

  The object of the present invention is to reduce the curing time of the adhesive material, shorten the assembly time, shorten the construction period, and reduce the construction cost, and the waterproofing structure of the lining pipe and the waterproofing of the lining pipe It is to provide a method.

  Another object of the present invention is to provide a water stop structure for a cover pipe and a water stop method for the cover pipe that can improve water tightness at both ends of a joint surface for integrating the cover pipe. There is.

In order to achieve the above object, the water stop structure for a lining pipe according to the present invention is provided with a joint collar continuously projecting in the circumferential direction on the outer peripheral edge of the rear end portion of the lining pipe main body, and the front end portion. Insert the front end part of the succeeding lining pipe into the collar of the rear end part of the preceding lining pipe by inserting a plurality of lining pipes with elastic rings for sealing continuously on the outer periphery. A lining pipe water-stop structure in which the elastic ring at the front end of the lining pipe is closely attached to the inner wall surface of the collar of the preceding lining pipe and is sequentially connected in the axial direction to form the lining of the underground pipe line. ,
The lining pipe main body is formed by combining joint surfaces of a plurality of divided pipe bodies divided in the circumferential direction,
The collar is formed in advance by providing a divided collar member corresponding to each divided tubular body in each divided tubular body, and joining the end portions of each divided collar member when combining the divided tubular bodies,
The elastic ring is provided in advance with a split ring member corresponding to each split pipe body in each split pipe body, and is provided with a fitting portion for joining at the end of each split ring member. The split ring members are joined and formed by fitting and bonding the fitting portions.

  According to the present invention, by providing a split ring member corresponding to each split pipe body in advance in each split pipe body, by attaching the split ring member in advance in a factory or the like, the ends of the split ring members are locally connected to each other. It is only necessary to join the lining pipe, and the curing time required for mounting the elastic ring can be greatly shortened. Even in a small shaft site where temporary space for the assembled lining pipe cannot be secured, the lining pipe Assembling time does not affect the construction cycle, and the construction period can be shortened and the construction cost can be reduced.

  In addition, by providing a fitting portion for joining at the end of each split ring member and fitting and bonding the fitting portions together, the deforming force during propulsion by, for example, a propulsion method is applied to the joint end. Even if it adds, the water stop at the edge part of each division | segmentation ring member can be ensured.

The other water stop structure of the lining pipe of the present invention is provided with a joint collar continuously projecting in the circumferential direction on the outer peripheral edge of the rear end of the lining pipe main body, and for sealing on the outer periphery of the front end. Insert the front end of the succeeding lining pipe into the collar at the rear end of the preceding lining pipe, and insert the front end of the succeeding lining pipe into the collar of the trailing end of the preceding lining pipe. A waterproof structure of the lining pipe that forms an lining of the underground pipe by connecting the elastic ring of the part closely to the inner wall surface of the collar of the preceding lining pipe and sequentially connecting in the axial direction,
The lining pipe main body is formed by combining joint surfaces of a plurality of divided pipe bodies divided in the circumferential direction,
The split tube body is provided with a sealing material so that both end portions thereof can be in close contact with the elastic ring and the collar over the axial direction of the joint surface, and the end portions of the seal material are elastically formed at both end portions of the joint surface. Applying a waterstop across the ring or collar
The collar is formed in advance by providing a divided collar member corresponding to each divided tubular body in each divided tubular body, and joining the end portions of each divided collar member when combining the divided tubular bodies,
The elastic ring is provided in advance with a split ring member corresponding to each split pipe body in each split pipe body, and is provided with a fitting portion for joining at the end of each split ring member. The split ring members are joined and formed by fitting and bonding the fitting portions.

  According to the present invention, by providing a split ring member corresponding to each split pipe body in advance in each split pipe body, by attaching the split ring member in advance in a factory or the like, the ends of the split ring members are locally connected to each other. It is only necessary to join the lining pipe, and the curing time required for mounting the elastic ring can be greatly shortened. Even in a small shaft site where temporary space for the assembled lining pipe cannot be secured, the lining pipe Assembling time does not affect the construction cycle, and the construction period can be shortened and the construction cost can be reduced.

  In addition, by providing a fitting portion for joining at the end of each split ring member and fitting and bonding the fitting portions together, the deforming force during propulsion by, for example, a propulsion method is applied to the joint end. Even if it adds, the water stop at the edge part of each division | segmentation ring member can be ensured.

  In addition, the sealing material is applied to both ends of the joint surface by applying a water-stopping material across the end of the sealing material and the elastic ring or collar so that both ends of the sealing material can be in close contact with the elastic ring and the collar, respectively. By joining, the water-tightness in the both ends of the joining surface for integrating a lining pipe can be improved reliably.

The water sealing method for a lining pipe according to the present invention is a collar for a joint that protrudes rearward at the outer peripheral edge of the rear end of the lining pipe body formed by combining the joint surfaces of a plurality of divided pipe bodies divided in the circumferential direction. Are continuously provided in the circumferential direction, and a plurality of lining pipes having a sealing elastic ring continuously provided in the circumferential direction on the outer periphery of the front end portion are provided in the collar at the rear end portion of the preceding lining pipe. Insert the front end of the lining pipe and connect the elastic ring at the front end of the following lining pipe in close contact with the inner wall surface of the collar of the preceding lining pipe in order to connect them in the axial direction. A method of water-stopping a lining pipe that forms a lining of
A step of previously providing each divided tube with a divided collar member corresponding to each divided tube constituting the collar;
A step of previously forming a split ring member corresponding to each split tube constituting the elastic ring in each split tube, and forming a fitting portion for joining formed at an end of each split ring member;
Forming a collar by joining the ends of each divided collar member when combining the divided tubes; and
A step of forming an elastic ring by fitting and bonding the fitting portions of each divided ring member when combining the divided tubes; and
It is characterized by including.

  According to the present invention, by providing a split ring member corresponding to each split pipe body in advance in each split pipe body, by attaching the split ring member in advance in a factory or the like, the ends of the split ring members are locally connected to each other. It is only necessary to join the lining pipe, and the curing time required for mounting the elastic ring can be greatly shortened. Even in a small shaft site where temporary space for the assembled lining pipe cannot be secured, the lining pipe Assembling time does not affect the construction cycle, and the construction period can be shortened and the construction cost can be reduced.

  In addition, by providing a fitting portion for joining at the end of each split ring member and fitting and bonding the fitting portions together, the deforming force during propulsion by, for example, a propulsion method is applied to the joint end. Even if it adds, the water stop at the edge part of each division | segmentation ring member can be ensured.

In the present invention, at the time of joining the divided pipe bodies, both end portions thereof are provided in close contact with the divided ring member and the divided collar member along the axial direction of the respective joint surfaces, and both end portions of the joint surfaces are provided. Applying the water-stopping material across the end of the sealing material and the split ring member or the split collar member to join the split pipes together;
Can be included.

  By adopting such a configuration, both ends of the sealing material are provided in close contact with the elastic ring and the collar, respectively, and the sealing material is provided at both ends of the joining surface, and the end of the sealing material and the split ring member or the split collar member are provided. By applying a water-stopping material across and joining them together, the watertightness at both ends of the joint surface for integrating the lining pipe can be reliably improved.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIGS. 1-7 is a figure which shows the water stop structure of the lining pipe concerning one Embodiment of this invention.

  FIG. 1 is an exploded perspective view of a propulsion pipe as an example of a lining pipe in the present embodiment. This propulsion pipe 10 is pushed into the ground by sequentially connecting a plurality of propulsion pipes 10 in the axial direction. A cover for the middle pipe line is formed. A cylindrical collar 14 having a predetermined length in the axial direction has a joint collar 14 at the rear end portion and a seal elastic ring 16 at the front end portion. Is provided.

  The propulsion pipe main body 12 is made of concrete, and is formed by combining the joint surfaces 20 of two semi-cylindrical divided pipe bodies 18 divided in the circumferential direction.

  Each joint surface 20 is formed with a seal groove 23 (see FIG. 3) in the axial direction, and a seal material 21 is provided in the seal groove.

  Further, a joining fitting 22 is attached at a predetermined interval along the axial direction in the vicinity of the joining surface 20 of each divided tubular body 18, and each divided tubular body 18 can be tightened and joined by this joining fitting 22. .

  The collar 14 is made of steel, and is continuously provided in the circumferential direction in a state of protruding rearward from the outer peripheral edge of the rear end portion of the propelling tube main body 12.

  Specifically, in the collar 14, two divided collar members 24 corresponding to each divided tube body 18 are attached in advance to each divided tube body 18, and each divided color member 24 is combined when the divided tube bodies 18 are joined together. These end portions are joined together by welding or the like so as to be integrated into a tubular shape.

  Further, as shown in FIG. 3, a water expansion rubber 26 is attached in the circumferential direction on each divided tube 18 side to which the divided collar member 24 is attached, and between each divided tube 18 and the divided collar member 24. The water stopping property is ensured.

  The elastic ring 16 is made of rubber, and two elastic rings 16 are provided continuously in the circumferential direction on the outer periphery of the front end portion of the propulsion tube main body 12.

  Specifically, each elastic ring 16 has two divided ring members 28 corresponding to the divided tube bodies attached to the divided tube bodies 18 with an adhesive in advance, and each divided ring 28 is combined when the divided tube bodies 18 are joined together. These end portions are bonded together to form a joint.

  Each split ring member 28 has four sealing protrusions 30 as shown in FIGS. 4 to 7, and a fitting portion for joining is formed at the end of each split ring member 28. The fitting portions of the ring member 28 are fitted to each other and bonded with an adhesive.

  For example, in FIG. 2 and FIG. 4, this fitting portion is formed with a plate-like insertion protrusion 32 at the end of one split ring member 28, and this insertion at the end of the other split ring member 28. An insertion recess 34 for receiving the insertion protrusion 32 is formed, an adhesive is applied to the insertion protrusion 32 and the insertion recess 34, and the insertion protrusion 32 is inserted and joined into the insertion recess 34. I have to.

  Further, in FIG. 5, an insertion projecting piece 36 is formed at the end of one split ring member 28 by cutting off the two sealing projecting piece 30 sides on both sides and projecting the central sealing projecting piece 30 portion. The other split ring member 28 has an insertion recess 38 formed by cutting away the central seal projection piece 30, and an adhesive is applied to the insertion projection piece 36 and the insertion recess 38. The insertion protrusions 36 are inserted into the recesses 38 for joining.

  Further, in FIG. 6, insertion concave portions 42 for receiving the plate-like insertion members 40 are formed at the end portions of both split ring members 28, and an adhesive is applied to the insertion members 40 and the insertion concave portions 42. The insertion member 40 is inserted into the concave portion 42 for joining.

  Further, in FIG. 7, the center sealing protrusion 30 side is cut off at the ends of both split ring members 28, and the insertion recess 44 is formed leaving the sealing protrusions on both sides. An insertion member 46 corresponding to the projecting piece 30 is formed, an adhesive is applied to the insertion recess 44 and the insertion member 46, and the insertion member 46 is inserted into and joined to the insertion recess 44.

  In addition, as shown in FIG. 3, both the end portions of the sealing material 21 are brought into contact with the water expansion rubber 26 and the elastic ring 16 on the side of the divided collar member 24 on the joining surface 20 of each divided tubular body 18. By applying a water-stopping material 48 across the sealing material 21 and the split ring member 28 or the split collar member 24 at both ends of the portion 20 and joining them, the water tightness at both ends of the joint surface 20 is improved. I have to.

  Next, the water stop method for such a propulsion pipe will be described.

  First, in a factory, two semi-cylindrical divided pipe bodies 18 made of concrete divided in the circumferential direction constituting the propelling pipe main body 12 are formed.

  Further, in this case, the steel divided collar members 24 corresponding to the divided tube bodies 18 constituting the collar 14 are continuously extended in the circumferential direction in a state of projecting rearward at the outer peripheral edge of the rear end portion of the divided tube bodies 18. Install in advance at the factory.

  At this time, the water between the divided tubular body 18 and the divided collar member 24 is stopped by the water expansion rubber 26.

  Further, a split ring member 28 corresponding to each split tube 18 constituting the elastic ring 16 is attached to each split tube 18 in advance at the factory.

  A fitting portion for joining is formed in advance at the end of each split ring member 28.

  In this state, the divided pipe body 18 is transported from the factory to the construction site.

  In this case, since the propulsion pipe 10 is transported in a divided state, the large-diameter propulsion pipe 10 can be easily transported regardless of the height restriction by the Road Traffic Law.

  Further, by attaching the split ring member 28 in advance in a factory or the like, it is only necessary to join the ends of the split ring member 28 at the site, and the curing time required for mounting the elastic ring 16 at the site is greatly reduced. Even in a narrow shaft site where temporary space for the assembled propelling pipe 10 cannot be secured, the assembling time of the propelling pipe 10 does not affect the construction cycle, shortening the construction period and reducing the construction cost. Reduction is possible.

  Next, the divided pipe body 18 is joined on site. When the divided pipe body 18 is joined, the divided ring member 28 and the divided collar member 24 are connected at both ends into the seal groove 23 extending in the axial direction of each joint surface 20. The sealing material 21 is provided in a state of being in close contact with.

  In this state, a water stop material 48 is applied to both ends of the joining surface 20 across the end of the sealing material 21 and the split ring member 28 or the split collar member 24, and the split tube bodies 18 are joined to each other with the joining jig 22. Join with.

  In this way, the propelling pipe 10 is integrated by applying and joining the water stop material 48 across the end of the sealing material 21 and the split ring member 28 or the split collar member 24 at both ends of the joint surface 20. Therefore, it is possible to improve the water tightness at both ends of the joining surface 20.

  Then, the end portions of the divided collar members 24 are joined together by welding or the like to form a continuous collar 14.

  Moreover, the continuous elastic ring 16 is formed by fitting the fitting parts of each division | segmentation ring member 28, and adhere | attaching with an adhesive material.

  In this way, by providing a fitting portion for joining at the end of each split ring member 28 and fitting and bonding the fitting portions together, deformation force during propulsion is applied to the joined end portion. Even in this case, the water stoppage at the end of each split ring member 28 can be ensured.

  The present invention is not limited to the above-described embodiment, and can be modified into various forms within the scope of the gist of the present invention.

  For example, in the above-described embodiment, the propulsion pipe is shown as the lining pipe, but the invention is not limited to this example.

  Further, the propulsion tube has a cylindrical shape, but is not limited to this example, and can also be applied to a propelling tube having a rectangular tube shape or the like.

  Further, the number of divisions of the propulsion pipe is not limited to two divisions, and can be three or more divisions.

  Furthermore, the propulsion pipe body is not limited to concrete, but can be made of steel or the like.

It is a disassembled perspective view of the propulsion pipe concerning one embodiment of the present invention. It is a fragmentary sectional view which shows the connection state of the division | segmentation ring member concerning this Embodiment. It is the elements on larger scale which show the state of the joint surface of the division | segmentation pipe body concerning this Embodiment. It is a perspective view which shows an example of the fitting part of the edge part of a division | segmentation ring member. It is a perspective view which shows the other example of the fitting part of the edge part of a division | segmentation ring member. It is a perspective view which shows the further another example of the fitting part of the edge part of a division | segmentation ring member. It is a perspective view which shows the further another example of the fitting part of the edge part of a division | segmentation ring member.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Propulsion pipe 12 Propulsion pipe main body 14 Collar 16 Elastic ring 18 Divided tube body 20 Joint surface 21 Seal material 24 Divided collar member 28 Divided ring member 30 Sealing protrusions 32, 36 Insertion protrusions 34, 38, 42, 44 Insertion Recess 40, 46 Insertion member 48 Water stop material

Claims (4)

A plurality of coverings are provided in the outer peripheral edge of the rear end portion of the lining pipe main body with joint collars protruding rearward in the circumferential direction, and an elastic ring for sealing on the outer periphery of the front end portion in the circumferential direction. Insert the front end of the succeeding lining pipe into the collar at the rear end of the preceding lining pipe, and insert the elastic ring at the front end of the succeeding lining pipe into the collar inner wall surface of the preceding lining pipe. It is a water stop structure of a lining pipe that forms a lining of an underground pipe line by sequentially connecting in the axial direction and making a lining of the underground pipe,
The lining pipe main body is formed by combining joint surfaces of a plurality of divided pipe bodies divided in the circumferential direction,
The collar is formed in advance by providing a divided collar member corresponding to each divided tubular body in each divided tubular body, and joining the end portions of each divided collar member when combining the divided tubular bodies,
The elastic ring is provided in advance with a split ring member corresponding to each split pipe body in each split pipe body, and is provided with a fitting portion for joining at the end of each split ring member. A waterstop structure for a lining pipe, which is formed by fitting and fitting the fitting portions of each split ring member together. A plurality of coverings are provided in the outer peripheral edge of the rear end portion of the lining pipe main body with joint collars protruding rearward in the circumferential direction, and an elastic ring for sealing on the outer periphery of the front end portion in the circumferential direction. Insert the front end of the succeeding lining pipe into the collar at the rear end of the preceding lining pipe, and insert the elastic ring at the front end of the succeeding lining pipe into the collar inner wall surface of the preceding lining pipe. It is a water stop structure of a lining pipe that forms a lining of an underground pipe line by sequentially connecting in the axial direction and making a lining of the underground pipe,
The lining pipe main body is formed by combining joint surfaces of a plurality of divided pipe bodies divided in the circumferential direction,
The split tube body is provided with a sealing material so that both end portions thereof can be in close contact with the elastic ring and the collar over the axial direction of the joint surface, and the end portions of the seal material are elastically formed at both end portions of the joint surface. Applying a waterstop across the ring or collar
The collar is formed in advance by providing a divided collar member corresponding to each divided tubular body in each divided tubular body, and joining the end portions of each divided collar member when combining the divided tubular bodies,
The elastic ring is provided in advance with a split ring member corresponding to each split pipe body in each split pipe body, and is provided with a fitting portion for joining at the end of each split ring member. A waterstop structure for a lining pipe, which is formed by fitting and fitting the fitting portions of each split ring member together. A collar for a joint projecting rearward is provided on the outer peripheral edge of the rear end portion of the lining pipe body formed by combining the joint surfaces of a plurality of divided pipe bodies divided in the circumferential direction, and the front end portion Insert the front end part of the succeeding lining pipe into the collar of the rear end part of the preceding lining pipe by inserting a plurality of lining pipes with elastic rings for sealing continuously on the outer periphery. The lining pipe's water stop is formed by connecting the elastic ring at the front end of the lining pipe in close contact with the collar inner wall surface of the preceding lining pipe in the axial direction to form the lining of the underground pipe line in the ground. A method,
A step of previously providing each divided tube with a divided collar member corresponding to each divided tube constituting the collar;
A step of previously forming a split ring member corresponding to each split tube constituting the elastic ring in each split tube, and forming a fitting portion for joining formed at an end of each split ring member;
Forming a collar by joining the ends of each divided collar member when combining the divided tubes; and
A step of forming an elastic ring by fitting and bonding the fitting portions of each divided ring member when combining the divided tubes; and
A method for water-stopping a lining pipe, characterized by comprising: In claim 3 ,
At the time of joining of the divided pipe bodies, both end portions of the joining surfaces in the axial direction are brought into close contact with the dividing ring member and the divided collar member, respectively, and a sealing material is provided, and ends of the sealing material are provided at both ends of the joining surface. Applying the water-stopping material across the part and the split ring member or the split collar member to join the split pipes together;
A method for water-stopping a lining pipe, characterized by comprising:

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