JP4648449B2 - Seismic retrofitting method for existing pipe manhole connections - Google Patents

Description

  The present invention provides an anti-seismic work for an existing pipe manhole connection portion that performs non-cutting to make the existing pipe manhole connection portion that is fitted and connected to a pipe hole in a peripheral wall constituting the human hole. Regarding the law.

  Seismic facilities have been severely damaged by major earthquakes that occurred in the past, and the impact on citizens' lives was serious. Among them, when the damage that the existing pipe has received is seen, breakage, slipping out, slipping, cracking, etc. occur, and the existing pipe is especially fitted and connected to the hole on the peripheral wall of the person hole. A lot of damage was seen in the existing pipe-hole connection. This is due to the fact that the existing pipe human hole connection part between the existing pipe and the human hole is rigidly joined, and therefore the existing pipe human hole connection part cannot absorb the difference in motion with respect to the earthquake motion.

For this reason, the earthquake resistance of the existing pipe manhole connection part of the existing pipe and manhole which became rigid joining was calculated | required. As a method of making the existing pipe manhole connection part that is rigidly jointed, the peripheral wall of the human hole around the outside of the existing pipe is cut with a certain width from inside the human hole with a tubular cutter, and the existing pipe and human A method has been disclosed in which a peripheral wall of a hole is cut off and an elastic water-stopping material that can be elastically deformed is filled into an annular gap between an existing pipe formed by cutting and the peripheral wall of a human hole. (For example, refer to Patent Document 1).
JP 2001-40751 A

  However, in such an earthquake resistant construction method for the existing pipe human hole connection part, the peripheral wall of the human hole in the outer periphery of the existing pipe is cut with a constant width with a tubular cutter, so that the strength of the human hole may be reduced. In particular, there is a problem that it is not suitable for human holes with thin walls. In addition, it is not easy to cut the peripheral wall of the human hole with a cutter in a narrow space in the human hole, and in the edge cutting between the existing pipe and the peripheral wall of the human hole with the cutter, the cutter penetrates the peripheral wall of the human hole and Since it pushes forward until it protrudes outside, the annular gap opens largely around the existing pipe on the outer peripheral wall surface of the peripheral wall of the human hole, and earth and sand or water outside the peripheral wall of the human hole flows into the annular gap, It was difficult to fill the annular gap with the elastic water-stopping material, which could hinder the work.

  Further, in order to ensure the edge cutting between the existing pipe and the peripheral wall of the human hole, the cutter is protruded beyond the peripheral wall of the human hole more than necessary. In general, there are many buried objects such as underground cables and various fluid buried pipes in the vicinity of the peripheral wall of the human hole in the vicinity of the peripheral wall. For this reason, there is a risk of damaging buried objects such as underground cables and various fluid buried pipes due to the cutter protruding outside the peripheral wall of the human hole during the edge cutting operation between the existing pipe and the peripheral wall of the human hole. There is a problem.

  The purpose of the present invention is good workability, there is no risk of damaging the buried objects such as underground cables and various fluid buried pipes that are close to the outer peripheral wall of the human hole, and the strength of the human hole An object of the present invention is to provide a seismic retrofitting method for an existing pipe manhole connection portion that can make the existing pipe manhole connection portion earthquake resistant.

  In order to achieve the above-described object, the invention according to claim 1 is to provide an existing pipe for improving the earthquake resistance of an existing pipe human hole connecting portion in which the existing pipe is fitted and connected to a pipe hole of a peripheral wall of the human hole. It is a seismic construction method for a human hole connecting portion, and the tip portion of the existing pipe fitted into the pipe hole of the peripheral wall of the human hole is moved from the inner peripheral wall surface side of the peripheral wall of the human hole to the outer periphery of the peripheral wall. Cutting to the position in the vicinity of the wall and not exceeding the outer peripheral wall, and the inner wall of the tube hole of the human hole located around the tip portion to be cut of the existing pipe along the existing pipe and the existing pipe A step of forming an annular cutout by annularly cutting on the same axis, a head contacting the inner peripheral wall surface of the human hole, and an outer diameter having the same diameter as or slightly smaller than the inner diameter of the annular cutout A fitting portion that can be fitted in the annular cut-out portion is provided, and the same diameter as the outer diameter of the existing pipe is provided in the axial direction of the fitting portion. The cylindrical auxiliary member configured to have an inner diameter larger than that is fitted into the annular cut portion, and the head is brought into contact with the inner peripheral wall surface of the human hole, so that the cylinder A step of liquid-tightly fixing the cylindrical auxiliary member to the human hole, and an outer diameter substantially the same as the inner diameter of the cylindrical auxiliary member and an inner diameter of the existing pipe on the inner periphery of the cylindrical auxiliary member And a step of providing an elastically deformable elastic water-stop tubular portion having an inner diameter of the liquid-tight and a step of arranging a lining pipe on the inner periphery of the existing pipe and the elastic water-stop tubular portion.

  The invention according to claim 2 is an earthquake resistance construction method for an existing pipe human hole connection part that is intended to make the existing pipe human hole connection part seismically resistant by fitting the existing pipe to the pipe hole of the peripheral wall of the human hole. The tip portion of the existing pipe that is fitted in the tube hole of the peripheral wall of the human hole does not exceed the outer peripheral wall surface in the vicinity of the outer peripheral wall surface of the peripheral wall from the inner peripheral wall surface side of the peripheral wall of the human hole. Cut to the position within the range, and cut the inner wall of the hole of the human hole located around the distal end portion of the existing pipe in a ring shape along the existing pipe and coaxially with the existing pipe. A step of forming a portion, a head abutting against an inner peripheral wall surface of the human hole, and an outer diameter that is the same as or slightly smaller than the inner diameter of the annular cut portion, and can be fitted into the annular cut portion A fitting portion is provided, and the inner diameter of the fitting portion is equal to or larger than the outer diameter of the existing pipe in the axial direction. An elastically deformable elastic water-stop tubular portion having an outer diameter that is substantially the same as the inner diameter of the cylindrical auxiliary member and an inner diameter that is substantially the same as the inner diameter of the existing pipe, on the inner periphery of the cylindrical auxiliary member configured as described above A liquid-tight step, fitting the fitting portion of the cylindrical auxiliary member into the annular cutout portion, bringing the head into contact with the inner peripheral wall surface of the human hole, and It includes a step of liquid-tightly fixing to the human hole and a step of arranging a lining pipe on the inner periphery of the existing pipe and the elastic water-stop tubular portion.

  The invention according to claim 3 is an earthquake resistance construction method for an existing pipe human hole connection part that is intended to make the existing pipe human hole connection part seismically resistant by fitting the existing pipe to the pipe hole of the peripheral wall of the human hole. The tip portion of the existing pipe that is fitted in the tube hole of the peripheral wall of the human hole does not exceed the outer peripheral wall surface in the vicinity of the outer peripheral wall surface of the peripheral wall from the inner peripheral wall surface side of the peripheral wall of the human hole. Cut to the position within the range, and cut the inner wall of the hole of the human hole located around the distal end portion of the existing pipe in a ring shape along the existing pipe and coaxially with the existing pipe. A step of forming a portion, a head abutting against an inner peripheral wall surface of the human hole, and an outer diameter that is the same as or slightly smaller than the inner diameter of the annular cut portion, and can be fitted into the annular cut portion A fitting portion is provided, and the inner diameter of the fitting portion is equal to or larger than the outer diameter of the existing pipe in the axial direction. The cylindrical auxiliary member configured as described above is fitted into the annular cut portion, the head is brought into contact with the inner peripheral wall surface of the human hole, and the cylindrical auxiliary member is placed in the human hole. A cylindrical temporary frame having an outer diameter that is substantially the same as the inner diameter of the cylindrical auxiliary member and an inner diameter that is substantially the same as the inner diameter of the existing pipe, on the inner periphery of the cylindrical auxiliary member; A step of providing, a step of arranging a lining pipe on the inner circumference of the existing pipe and the cylindrical temporary frame, and a step of arranging the lining pipe on the inner circumference of the existing pipe and the cylindrical temporary frame, and then the cylindrical auxiliary member A step of removing the cylindrical temporary frame provided inside, and a step of liquid-tightly providing an elastically deformable elastic water-stop tubular portion in the gap obtained by removing the cylindrical temporary frame from the cylindrical auxiliary member. It is characterized by.

  The invention according to claim 4 is an earthquake resistance construction method for an existing pipe human hole connection part which is intended to make the existing pipe human hole connection part seismic resistant by fitting the existing pipe to the pipe hole of the peripheral wall of the human hole. The tip portion of the existing pipe that is fitted in the tube hole of the peripheral wall of the human hole does not exceed the outer peripheral wall surface in the vicinity of the outer peripheral wall surface of the peripheral wall from the inner peripheral wall surface side of the peripheral wall of the human hole. Cut to the position within the range, and cut the inner wall of the hole of the human hole located around the distal end portion of the existing pipe in a ring shape along the existing pipe and coaxially with the existing pipe. A step of forming a portion, a head abutting against an inner peripheral wall surface of the human hole, and an outer diameter that is the same as or slightly smaller than the inner diameter of the annular cut portion, and can be fitted into the annular cut portion A fitting portion is provided, and the inner diameter of the fitting portion is equal to or larger than the outer diameter of the existing pipe in the axial direction. The cylindrical auxiliary member configured as described above is fitted into the annular cut portion, the head is brought into contact with the inner peripheral wall surface of the human hole, and the cylindrical auxiliary member is placed in the human hole. A step of closely fixing, and an elastically deformable elasticity having an outer diameter that is substantially the same as an inner diameter of the cylindrical auxiliary member and an inner diameter that is substantially the same as the inner diameter of the existing pipe on the inner periphery of the cylindrical auxiliary member A step of liquid-tightly providing a water-stop tubular portion, a step of liquid-tightly fitting a steel pipe having an inner diameter substantially the same as the inner diameter of the existing pipe in the elastic water-stop tubular portion, the existing pipe and the steel pipe And a step of disposing a lining pipe on the inner periphery of the rim.

  The invention according to claim 5 is an earthquake resistance construction method for an existing pipe human hole connection part that is intended to make the existing pipe human hole connection part seismically resistant by fitting the existing pipe to the pipe hole of the peripheral wall of the human hole. The tip portion of the existing pipe that is fitted in the tube hole of the peripheral wall of the human hole does not exceed the outer peripheral wall surface in the vicinity of the outer peripheral wall surface of the peripheral wall from the inner peripheral wall surface side of the peripheral wall of the human hole. Cut to the position within the range, and cut the inner wall of the hole of the human hole located around the distal end portion of the existing pipe in a ring shape along the existing pipe and coaxially with the existing pipe. A step of forming a portion, a head abutting against an inner peripheral wall surface of the human hole, and an outer diameter that is the same as or slightly smaller than the inner diameter of the annular cut portion, and can be fitted into the annular cut portion A fitting portion is provided, and the inner diameter of the fitting portion is equal to or larger than the outer diameter of the existing pipe in the axial direction. An elastically deformable elastic water-stop tubular portion having an outer diameter that is substantially the same as the inner diameter of the cylindrical auxiliary member and an inner diameter that is substantially the same as the inner diameter of the existing pipe, on the inner periphery of the cylindrical auxiliary member configured as described above Liquid-tightly, and in the elastic water-stop tubular portion, a step of liquid-tightly fitting a steel pipe having an inner diameter substantially the same as the inner diameter of the existing pipe; and the fitting portion of the cylindrical auxiliary member A step of fitting into an annular cut-out portion and bringing the head into contact with the inner peripheral wall surface of the human hole to fix the cylindrical auxiliary member in a liquid-tight manner to the human hole; and an inner portion of the existing pipe and the steel pipe And a step of arranging a lining pipe around the circumference.

  The invention according to claim 6 is an earthquake resistance construction method for an existing pipe human hole connection part which is intended to make the existing pipe human hole connection part seismically resistant by fitting the existing pipe to the pipe hole of the peripheral wall of the human hole. The tip portion of the existing pipe that is fitted in the tube hole of the peripheral wall of the human hole does not exceed the outer peripheral wall surface in the vicinity of the outer peripheral wall surface of the peripheral wall from the inner peripheral wall surface side of the peripheral wall of the human hole. Cut to the position within the range, and cut the inner wall of the hole of the human hole located around the distal end portion of the existing pipe in a ring shape along the existing pipe and coaxially with the existing pipe. A step of forming a portion, a head abutting against an inner peripheral wall surface of the human hole, and an outer diameter that is the same as or slightly smaller than the inner diameter of the annular cut portion, and can be fitted into the annular cut portion A fitting portion is provided, and the inner diameter of the fitting portion is equal to or larger than the outer diameter of the existing pipe in the axial direction. The cylindrical auxiliary member configured as described above is fitted into the annular cut portion, the head is brought into contact with the inner peripheral wall surface of the human hole, and the cylindrical auxiliary member is placed in the human hole. A step of closely fixing, and an elastically deformable elasticity having an outer diameter that is substantially the same as an inner diameter of the cylindrical auxiliary member and an inner diameter that is substantially the same as the inner diameter of the existing pipe on the inner periphery of the cylindrical auxiliary member A step of providing a water-tight tubular portion in a liquid-tight manner, and a tip portion of a steel pipe in an existing pipe after excising the tip portion through the inner periphery of the elastic water-stop tubular portion, and at least a liquid between the elastic water-stop tubular portion It includes a step of fitting so as to be dense, and a step of arranging a lining pipe on the inner circumference of the existing pipe and the steel pipe.

  The invention according to claim 7 is an earthquake resistance construction method for an existing pipe human hole connection part that is intended to make the existing pipe human hole connection part seismically resistant by fitting the existing pipe to the pipe hole of the peripheral wall of the human hole. The tip portion of the existing pipe that is fitted in the tube hole of the peripheral wall of the human hole does not exceed the outer peripheral wall surface in the vicinity of the outer peripheral wall surface of the peripheral wall from the inner peripheral wall surface side of the peripheral wall of the human hole. Cut to the position within the range, and cut the inner wall of the hole of the human hole located around the distal end portion of the existing pipe in a ring shape along the existing pipe and coaxially with the existing pipe. A step of forming a portion, a head abutting against an inner peripheral wall surface of the human hole, and an outer diameter that is the same as or slightly smaller than the inner diameter of the annular cut portion, and can be fitted into the annular cut portion A fitting portion is provided, and the inner diameter of the fitting portion is equal to or larger than the outer diameter of the existing pipe in the axial direction. An elastically deformable elastic water-stop tubular portion having an outer diameter that is substantially the same as the inner diameter of the cylindrical auxiliary member and an inner diameter that is substantially the same as the inner diameter of the existing pipe, on the inner periphery of the cylindrical auxiliary member configured as described above A liquid-tight step, fitting the fitting portion of the cylindrical auxiliary member into the annular cutout portion, bringing the head into contact with the inner peripheral wall surface of the human hole, and Liquid-tightly fixing to the human hole, and passing through the inner periphery of the elastic water-stop tubular portion, the tip portion of the steel pipe in the existing pipe after cutting the tip portion is liquid at least between the elastic water-stop tubular portion. It includes a step of fitting so as to be dense, and a step of arranging a lining pipe on the inner circumference of the existing pipe and the steel pipe.

  The invention according to claim 8 is an earthquake resistance construction method for an existing pipe human hole connection part which is intended to make the existing pipe human hole connection part seismically resistant by fitting the existing pipe to the pipe hole of the peripheral wall of the human hole. The tip portion of the existing pipe that is fitted in the tube hole of the peripheral wall of the human hole does not exceed the outer peripheral wall surface in the vicinity of the outer peripheral wall surface of the peripheral wall from the inner peripheral wall surface side of the peripheral wall of the human hole. Cut to the position within the range, and cut the inner wall of the hole of the human hole located around the distal end portion of the existing pipe in a ring shape along the existing pipe and coaxially with the existing pipe. A step of forming a portion, a head abutting against an inner peripheral wall surface of the human hole, and an outer diameter that is the same as or slightly smaller than the inner diameter of the annular cut portion, and can be fitted into the annular cut portion A fitting portion is provided, and the inner diameter of the fitting portion is equal to or larger than the outer diameter of the existing pipe in the axial direction. The cylindrical auxiliary member configured as described above is fitted into the annular cut portion, the head is brought into contact with the inner peripheral wall surface of the human hole, and the cylindrical auxiliary member is placed in the human hole. A step of tightly fixing, a step of fitting a tip portion of a steel pipe into the existing pipe after cutting the tip portion through the tube hole of the peripheral wall of the human hole, and between the steel pipe and the cylindrical auxiliary member The method includes a step of providing an elastically deformable elastic water-stop tubular portion in a liquid-tight manner and a step of arranging a lining pipe on the inner periphery of the existing pipe and the steel pipe.

  The invention according to claim 9 is an earthquake resistance construction method for an existing pipe human hole connection part that is intended to make the existing pipe human hole connection part seismically resistant by fitting the existing pipe to the pipe hole of the peripheral wall of the human hole. The tip portion of the existing pipe that is fitted in the tube hole of the peripheral wall of the human hole does not exceed the outer peripheral wall surface in the vicinity of the outer peripheral wall surface of the peripheral wall from the inner peripheral wall surface side of the peripheral wall of the human hole. Cut to the position within the range, and cut the inner wall of the hole of the human hole located around the distal end portion of the existing pipe in a ring shape along the existing pipe and coaxially with the existing pipe. A step of fitting a distal end portion of a steel pipe into an existing pipe after excision of the distal end portion through the tube hole of the peripheral wall of the human hole, and a head portion that contacts the inner peripheral wall surface of the human hole And has an outer diameter that is the same as or slightly smaller than the inner diameter of the annular cut portion and fits within the annular cut portion. An inner portion of a cylindrical auxiliary member that is configured to have an inner diameter that is equal to or larger than the outer diameter of the existing pipe in the axial direction of the fitting portion. An elastically deformable elastic water-stop tubular portion having an outer diameter substantially the same as the inner diameter of the auxiliary member and an inner diameter that is the same as or slightly larger than the inner diameter of the existing pipe; An elastic water-stop tubular portion provided on the inner periphery of the cylindrical auxiliary member is fitted to the outer periphery of the steel pipe so that the fitting portion of the cylindrical auxiliary member is fitted into the annular cut portion and the head is Including a step of abutting an inner peripheral wall surface of a human hole to fix the cylindrical auxiliary member in a liquid-tight manner to the human hole, and a step of arranging a lining pipe on an inner periphery of the existing pipe and the steel pipe. It is characterized by.

  A tenth aspect of the present invention is the step of forming a cut in the end portion of the existing pipe after cutting away the tip portion in a range not reaching the outer peripheral surface from the inner peripheral side according to any one of the first to ninth aspects. It is characterized by including.

  The invention according to an eleventh aspect of the present invention is the head of the cylindrical auxiliary member according to any of the first to tenth aspects, wherein the axial length is assumed when an earthquake occurs. It is set on the basis of the amount of movement of the existing pipe in the pipe hole of the peripheral wall of the human hole.

  According to a twelfth aspect of the present invention, in the head portion of the cylindrical auxiliary member according to any one of the first to eleventh aspects, a substantially conical shape is formed so that the outer shape is gradually reduced toward the opening-side tip. It is formed in a shape or a pyramid shape.

  According to a thirteenth aspect of the present invention, between the tubular auxiliary member according to any one of the first to twelfth aspects and the elastic water-stop tubular portion provided on the inner periphery of the cylindrical auxiliary member, The elastic water-stop tubular portion is provided with a slip-out preventing means for preventing the elastic water-stop tubular portion from slipping out of the cylindrical auxiliary member.

  According to the earthquake resistance construction method of the existing pipe manhole connection portion according to claim 1, 2, 3, the tip portion of the existing pipe that is fitted in the pipe hole of the peripheral wall of the human hole is placed inside the peripheral wall of the human hole. The cutter does not protrude outside the peripheral wall of the manhole because it is cut from the peripheral wall side within the range that does not exceed the outer peripheral wall surface, so the space between the outer peripheral wall surface of the peripheral wall of the human hole and the existing pipe is closed. In this state, it is possible to prevent earth and sand outside the peripheral wall of the human hole from flowing between the outer peripheral wall surface and the periphery of the existing pipe into the peripheral hole of the human hole, and to prevent or minimize the inflow of water. The work can be performed easily, and the cutter can damage the underground cables and the buried objects such as underground pipes for various fluids existing in the vicinity of the outer periphery of the peripheral wall of the human hole. There is no fear of attaching.

  In addition, the fitting portion of the cylindrical auxiliary member is inserted into the annular excision portion in which the inner wall of the human hole located around the tip portion to be excised from the existing pipe is cut in an annular manner coaxially with the existing pipe along the existing pipe. Since the cylindrical auxiliary member is liquid-tightly fixed to the human hole by bringing the head into contact with the inner peripheral wall surface of the human hole, the cylindrical auxiliary member is integrated with the peripheral wall of the human hole and is cylindrical. The inner periphery of the auxiliary member constitutes a part of the tube hole in the peripheral wall of the human hole.

  And the lining pipe arrange | positioned in the inner periphery of the elastic water-stop tubular part provided in the existing pipe and the cylindrical auxiliary member plays the role as an existing pipe, and the lining pipe in the inner periphery of the elastic water-stop tubular part is This constitutes an alternative tip portion of the existing pipe that is fitted to the inner circumference of the cylindrical auxiliary member that constitutes a part of the tube hole of the peripheral wall of the human hole.

  With this configuration, the difference in movement between the existing pipe and the peripheral wall of the manhole that occurs when an earthquake occurs can be absorbed by the elastic water-stop tubular portion, so that the existing pipe manhole connection portion is prevented from being destroyed by the earthquake motion. be able to.

  When the movement between the existing pipe and the peripheral wall of the manhole that occurs when an earthquake occurs is a movement in the axial direction, the inner diameter of the cylindrical auxiliary member is equal to or larger than the outer diameter of the existing pipe. Therefore, the end portion of the existing pipe enters and exits the cylindrical auxiliary member, and there is no possibility that the peripheral wall of the human hole and the cylindrical auxiliary member are destroyed by the end portion of the existing pipe.

  In addition, when the movement between the existing pipe and the peripheral wall of the human hole that occurs when an earthquake occurs is a movement in a direction crossing the axial direction, the end of the existing pipe that is slightly fitted in the pipe hole is Since the existing pipe and the peripheral wall of the human hole are cut off, it is possible to prevent the peripheral wall of the human hole and the cylindrical auxiliary member from being destroyed. In addition, since the lining pipe plays a role as an existing pipe, the lining pipe can sufficiently supplement the broken portion, and there is no possibility of impairing the function as the existing pipe.

  Further, since the cylindrical auxiliary member is fixed to the human hole by contacting the head with the inner peripheral wall surface of the human hole, the head protrudes from the inner peripheral wall surface of the human hole. An elastic water-stop tubular portion provided on the inner periphery of a cylindrical auxiliary member that constitutes a part of the hole in the peripheral wall of the human hole, the tube hole in the peripheral wall of the human hole becomes longer by the length in the axial direction. Thus, the difference in movement can be absorbed more effectively by the elastic water-stop tubular portion, and the water-stop effect can be improved, and the wall thickness is particularly thin. Suitable for human holes.

  According to the earthquake resistance construction method of the existing pipe human hole connection part according to claim 4, 5, 6, 7, 8, 9, the tip portion of the existing pipe fitted into the pipe hole of the peripheral wall of the human hole, The cutter does not protrude outside the peripheral wall of the human hole because it is cut from the inner peripheral wall side of the peripheral wall of the human hole so as not to exceed the outer peripheral wall surface. Between the outer peripheral wall surface and the surrounding area of the existing pipe, it is possible to prevent the earth and sand outside the peripheral wall of the human hole from flowing into the peripheral hole of the human hole, Inflow can be prevented or minimized, work can be performed easily, and underground cables and buried pipes for various fluids, etc. that exist in the vicinity of the outer periphery of the peripheral wall of the manhole by a cutter There is no risk of scratching the buried objects.

  Further, the cylindrical auxiliary member is fitted into an annular excision portion in which the inner wall of the tube hole of the human hole located around the tip portion to be excised from the existing pipe is annularly cut along the existing pipe and coaxially with the existing pipe. Since the cylindrical auxiliary member is liquid-tightly fixed to the human hole, the cylindrical auxiliary member is integrated with the peripheral wall of the human hole, and the head is brought into contact with the inner peripheral wall surface of the human hole. The inner periphery of the cylindrical auxiliary member constitutes a part of the tube hole in the peripheral wall of the human hole.

  The steel pipe and the lining pipe serve as existing pipes, and the steel pipe and the lining pipe on the inner periphery of the elastic water-stop tubular portion constitute a part of the tube hole of the peripheral wall of the human hole. This constitutes an alternative tip portion of the existing pipe fitted around the circumference.

  With this configuration, the difference in motion between the existing pipe and the peripheral wall of the manhole that occurs when an earthquake occurs can be absorbed by the elastic water-stop tubular portion, preventing the existing pipe manhole connection from being damaged by earthquake motion. can do.

  When the movement between the existing pipe and the peripheral wall of the manhole that occurs when an earthquake occurs is a movement in the axial direction, the inner diameter of the cylindrical auxiliary member is equal to or larger than the outer diameter of the existing pipe. Therefore, the end portion of the existing pipe enters and exits the cylindrical auxiliary member, and there is no possibility that the peripheral wall of the human hole and the cylindrical auxiliary member are destroyed by the end portion of the existing pipe.

  In addition, when the movement between the existing pipe and the peripheral wall of the human hole that occurs when an earthquake occurs is a movement in a direction crossing the axial direction, the end of the existing pipe that is slightly fitted in the pipe hole is Since the existing pipe and the peripheral wall of the human hole are cut off, it is possible to prevent the peripheral wall of the human hole and the cylindrical auxiliary member from being destroyed. In addition, since the steel pipe and the lining pipe play a role as the existing pipe, the steel pipe and the lining pipe can sufficiently supplement the broken portion, and there is no possibility of impairing the function as the existing pipe.

  In addition, since the cylindrical auxiliary member is fixed to the human hole by bringing the head into contact with the inner peripheral wall surface of the human hole, the head protrudes from the inner peripheral wall surface of the human hole. An elastic water-stop tube provided on the inner periphery of the cylindrical auxiliary member constituting a part of the tube hole on the peripheral wall of the manhole, the tube hole on the peripheral wall of the manhole becomes longer by the axial length of As a result, the difference in movement can be more effectively absorbed by the elastic water-stop tubular portion, and the water-stop effect can be improved. Suitable for thin human holes.

  According to the seismic retrofitting method of the existing pipe manhole connection part according to claim 10, the outer periphery from the inner peripheral side to the end part of the existing pipe after cutting away the tip part according to any one of claims 1 to 9 Since it includes a process of forming a cut in a range that does not reach the surface, when an earthquake occurs and a difference occurs in the movement between the existing pipe and the peripheral wall of the manhole, the end of the existing pipe is easily destroyed. Thus, damage to the peripheral wall of the human hole and the cylindrical auxiliary member due to the end of the existing pipe can be effectively prevented.

  According to the seismic retrofitting method for an existing pipe manhole connection part according to claim 11, the axial length of the head of the cylindrical auxiliary member according to any one of claims 1 to 10 is an earthquake. It is set on the basis of the amount of advancement and retraction of the existing pipe in the hole in the peripheral wall of the human hole that is assumed when there is a lining pipe. The difference in movement caused by the earthquake with the cylindrical auxiliary member constituting the part can be reliably absorbed by the elastic water-stop tubular portion provided on the inner periphery of the cylindrical auxiliary member.

  According to the earthquake resistant construction method for an existing pipe manhole connecting portion according to claim 12, the outer shape of the head portion of the cylindrical auxiliary member according to any one of claims 1 to 11 is an opening-side tip. Since the cylindrical auxiliary member is formed in a substantially conical shape or a pyramid shape so as to gradually become smaller in diameter toward the inner side of the cylindrical auxiliary member, the input material such as filth introduced into the human hole protrudes from the inner peripheral wall surface of the human hole. It is possible to prevent the head from being caught.

  According to the seismic retrofitting method for an existing pipe manhole connection portion according to claim 13, the elastic stopper provided on the inner periphery of the cylindrical auxiliary member and the cylindrical auxiliary member according to any one of claims 1 to 12. Between the water tubular portion, there is provided a slip-out preventing means for preventing the elastic water-stop tubular portion from slipping out of the cylindrical auxiliary member, so that an earthquake occurs and the movement between the existing tube and the peripheral wall of the human hole is caused. When a difference arises, it is possible to prevent the elastic water-stop tubular portion from slipping out of the cylindrical auxiliary member, so that the water stop effect can be effectively maintained.

  Hereinafter, the best mode for carrying out the seismic retrofitting method for an existing pipe manhole connection part according to the present invention will be described in detail with reference to the embodiments shown in the drawings.

  FIG. 1 to FIG. 12 show a first example of implementing the seismic retrofitting method for an existing pipe human hole connecting portion according to the present invention, FIG. 1 is a longitudinal sectional view showing a state before construction, and FIG. 2 is a human hole. FIG. 3 is a longitudinal sectional view showing a state in which an end portion of an existing pipe fitted into a pipe hole in the peripheral wall is cut to form an annular cut part, and FIG. 3 shows an existing pipe fitted in a pipe hole in the peripheral wall of the human hole FIG. 4 is a state in which the cylindrical auxiliary member is fixed to the annular excision part of the existing tube in the tube hole of the peripheral wall of the human hole. FIG. 5 is a longitudinal sectional view showing a state in which a cylindrical auxiliary member is fixed to an annular cut portion of an existing pipe in a tube hole of a peripheral wall of a human hole, and FIG. 6 is a cylindrical auxiliary shown in FIG. FIG. 7, FIG. 8, FIG. 9 are enlarged sectional views showing other examples of the elastic water-stopping tubular portion, showing a state in which the elastic water-stopping tubular portion is provided on the inner periphery of the member. FIG. 10 is an enlarged cross-sectional view showing a slip-out preventing means provided between the cylindrical auxiliary member and the elastic water-stop tubular portion, and FIG. 11 shows a lining pipe disposed on the inner periphery of the existing pipe and the elastic water-stop tubular portion. FIG. 12 is a longitudinal sectional view showing another example of the lining pipe.

  FIG. 1 shows an example of a manhole (manhole) for carrying out the construction method of this example. As shown in the figure, the existing pipe 2 laid in the ground 1 in the state before construction is a manhole. 3, an existing pipe human hole connecting portion 6 is formed by being inserted into and connected to the pipe hole 5 of the basic peripheral wall portion 4a of the human hole 3. The manhole 3 is formed with a concrete peripheral wall 4b formed in advance on a foundation peripheral wall 4a constructed of concrete to form a peripheral wall 4, and an upper end opening 7 can be opened and closed with a lid 8. It is blocked.

  As shown in FIG. 2, first, the seismic retrofit method for the existing pipe human hole connecting portion 6 having such a structure is fitted into the pipe hole 5 of the basic peripheral wall portion 4 a in the peripheral wall 4 of the human hole 3. The front end portion 2a of the existing pipe 2 is cut from the inner peripheral wall surface 9 side of the foundation peripheral wall portion 4a to a position within the range not exceeding the outer peripheral wall surface 10 in the vicinity of the outer peripheral wall surface 10, and The inner wall of the tube hole 5 of the basic peripheral wall portion 4a located around the distal end portion 2a is cut out annularly along the existing tube 2 coaxially with the existing tube 2 to form the annular cut portion 11.

  The vicinity of the outer peripheral wall surface 10 from the inner peripheral wall surface 9 side of the foundation peripheral wall portion 4a means that the existing tube remaining in the state of being fitted in the tube hole 5 of the basic peripheral wall portion 4a after the distal end portion 2a of the existing tube 2 is excised. The end 2b of 2 is a position where the existing pipe 2 and the basic peripheral wall 4a of the human hole 3 can be cut off easily when an earthquake occurs. The length L of the existing pipe 2 remaining in the state of being fitted in the tube hole 5 of the basic peripheral wall portion 4a after excision of the distal end portion of the existing pipe 2 is preferably about 0 to 5 cm. In order to prevent inflow of earth and sand or water, it is particularly preferable that the distance is at least 0.5 cm. When setting the excision dimension position P of the distal end portion 2a of the existing pipe 2, the base peripheral wall portion 4a is driven in the field, and the wall thickness is not necessarily as designed. It is preferable to measure by applying ultrasonic waves and set the resection dimension position P of the distal end portion 2a of the existing pipe 2.

  An annular excision portion formed by annularly excavating the inner wall of the tube hole 5 of the basic peripheral wall portion 4a located around the tip portion 2a to be excised from the existing pipe 2 along the existing pipe 2 and coaxially with the existing pipe 2 11, the inner diameter of at least the fitting portion of the cylindrical auxiliary member described after fitting into the annular cut portion 11 is allowed to be the same as or larger than the outer diameter of the existing pipe 2. The diameter can be made.

  Prior to excision of the distal end portion 2a of the existing pipe 2, a working space necessary for excision work of the distal end portion of the existing pipe 2 and a fitting portion of a cylindrical auxiliary member are fitted to the annular excision portion 11 as described later. In order to secure the working space to be fixed, the invert concrete 12 on the front surface of the tip portion 2a of the existing pipe 2 is cut out only in a necessary range.

  The cutting of the distal end portion 2a of the existing pipe 2 and the cutting of the inner wall of the tube hole 5 may be cut simultaneously, or one of them may be cut first, and then the other may be cut. The cutting of the distal end portion 2a of the existing tube 2 and the inner wall of the tube hole 5 is not particularly limited, but in this example, it is removed by cutting with a ring-shaped cutter (not shown). The ring-shaped cutter has the same inner diameter as the inner diameter of the existing pipe 2 and the outer diameter is a fitting portion of a cylindrical auxiliary member that fits at least the inner diameter of the annular cutting portion 11 described above. The inner diameter of the existing pipe 2 is the same diameter as the outer diameter of the existing pipe 2 or a diameter that can be allowed to be larger than that.

  Further, the end portion 2b of the existing pipe 2 after cutting off the tip portion fitted in the tube hole 5 of the basic peripheral wall portion 4a is cut 13 within a range not reaching the outer peripheral surface from the inner peripheral side as shown in FIG. May be formed.

  Next, as shown in FIGS. 4 and 5, the cylindrical auxiliary member 14 is liquid-tightly fixed to the human hole 3. The cylindrical auxiliary member 14 has a head 15 that contacts the inner peripheral wall surface 9 of the human hole 3 and an outer diameter that is the same as or slightly smaller than the inner diameter of the annular cut portion 11 and fits within the annular cut portion 11. The fitting part 16 which can be fitted is provided, and it is comprised so that it may have the same diameter as the outer diameter of the existing pipe 2 in the axial direction of this fitting part 16, or an inner diameter larger than it.

  The fitting portion 16 of the cylindrical auxiliary member 14 configured in this way is fitted into the annular cutout portion 11, and the head is brought into contact with the inner peripheral wall surface 9 of the human hole 3, so that the cylindrical auxiliary member 14 is Fix in hole 3 in a liquid-tight manner. In the means for liquid-tightly fixing the cylindrical auxiliary member 14 to the human hole 3, the cylindrical auxiliary member 14 is fixed with an adhesive having a sealing property.

  In the head 15 of the cylindrical auxiliary member 14, in this example, the length in the axial direction is set so that the existing pipe 2 advances and retreats in the pipe hole 5 of the peripheral wall 4 of the human hole 3 assumed when an earthquake occurs. The movement amount is set as a reference. The axial length of the head 15 is preferably 40 mm or more. In addition, the shape of the head 15 is formed in a substantially conical shape or a pyramid shape so that the outer shape gradually becomes smaller in diameter toward the opening-side tip.

  The cylindrical auxiliary member 14 configured as described above is formed of concrete, hard rubber, hard plastic, or the like. In addition, the cylindrical auxiliary member 14 may not be formed in a cylindrical shape from the beginning, and although not illustrated, when the cylindrical auxiliary member 14 is divided into a plurality of portions in the axial direction and fixed to the human hole 3, You may make it assemble in a cylinder shape.

  Next, as shown in FIG. 6, on the inner periphery of the cylindrical auxiliary member 14 fixed to the human hole 3, an outer diameter that is substantially the same as the inner diameter of the cylindrical auxiliary member 14 and an inner diameter of the existing pipe 2. An elastically deformable elastic water-stop tubular portion 17 having an inner diameter of 2 mm is provided in a liquid-tight manner.

  The elastic water-stop tubular portion 17 is formed using an elastic water-stopping material such as a water-expandable rubber, a chemical conversion rubber, or a natural rubber containing a soft resin such as silicon resin or soft epoxy urethane or a water-absorbing material. As a means for providing the elastic water-stop tubular portion 17 on the inner periphery of the cylindrical auxiliary member 14, an elastic water-stop tubular portion 17 is formed by sticking an elastic water-stop material in a tubular shape on the inner periphery of the cylindrical auxiliary member 14. Alternatively, the elastic water-stop tubular portion 17 may be formed of an elastic water-stopping material, and the elastic water-stop tubular portion 17 may be inserted into the cylindrical auxiliary member 14 or provided in the cylindrical auxiliary member 14. An inner mold frame (not shown) is set on the inner mold frame, and an elastic water-stopping material 17 is injected between the inner mold frame and the inner wall of the cylindrical auxiliary member 14 to form an elastic water-stop tubular portion 17. Alternatively, the elastic water-stop tubular portion 17 may be divided into a plurality of portions in the axial direction and assembled into a cylindrical shape within the cylindrical auxiliary member 14 when provided on the cylindrical auxiliary member 14.

  In this example, when the elastic water-stop tubular portion 17 is provided on the inner periphery of the cylindrical auxiliary member 14 fixed to the human hole 3, a joint material 18 is provided at the distal end portion of the fitting portion 16 of the cylindrical auxiliary member 14. When the elastic water-stop tubular portion 17 is provided on the inner periphery of the cylindrical auxiliary member 14, the joint material 18 is interposed between the tip of the existing pipe 2 and the tip of the elastic water-stop tubular portion 17. .

  In the means for making the space between the tubular auxiliary member 14 and the elastic water-stop tubular portion 17 liquid-tight, the outer diameter of the elastic water-stop tubular portion 17 is slightly larger than the inner diameter of the tubular auxiliary member 14 and is tubular. Liquid tightness may be achieved by pressing the outer periphery of the elastic water-stop tubular portion 17 to the inner periphery of the auxiliary member 14 by its restoring action, or between the cylindrical auxiliary member 14 and the elastic water-stop tubular portion 17. May be bonded with an adhesive having a sealing property.

  Further, the elastic water-stop tubular portion 17 may be adhered to the outer peripheral surface of the lining pipe described later, or may be press-contacted to the outer peripheral surface of the lining pipe. As the elastic water-stop tubular portion 17 used in press contact with the outer peripheral surface of the lining tube, the inner surface of the elastic water-stop tubular portion 17 is formed in a wave shape in order to ensure sealing performance and slidability with the lining tube. It is preferable to do.

  7, 8, and 9 show other examples of the elastic water-stop tubular portion 17. The elastic water-stop tubular portion 17 shown in FIG. 7 has a concave portion 17 a and a convex portion 17 b whose inner surfaces are annular in the axial direction. Are formed continuously, and the concave portion 17a is deeply cut. The elastic water-stop tubular portion 17 shown in FIG. 8 has a shape in which an inner surface has an annular concave portion 17a and a convex portion 17b formed continuously in the axial direction, and the convex portion 17b is hollow. The elastic water-stop tubular portion 17 shown in FIG. 9 has a shape in which an inner surface is formed by continuously forming a concave portion 17a and a convex portion 17b that are annular in the axial direction, and is entirely hollow. These elastic water-stop tubular portions 17 shown in FIG. 7, FIG. 8, and FIG. 9 are all excellent in sealing performance between the lining pipe and the stretchability in the axial direction, and may be adhered to the outer peripheral surface of the lining pipe. Moreover, you may make it press-contact. In any case, it is only necessary to stop water between the elastic water-stop tubular portion 17 and the inner periphery of the cylindrical auxiliary member 14 and between the elastic water-stop tubular portion 17 and the outer peripheral surface of the lining pipe.

  As shown in FIG. 10, the elastic water-stop tubular portion 17 is provided between the cylindrical auxiliary member 14 and the elastic water-stop tubular portion 17 provided on the inner periphery of the cylindrical auxiliary member 14. It is preferable to provide a slip-out preventing means 19 for preventing the slip-out from coming out.

  10 is provided with an annular groove 20 formed on the inner peripheral surface of the head 15 of the cylindrical auxiliary member 14 and an annular groove 20 provided on the outer periphery of the elastic water-stop tubular portion 17. Although comprised by the annular convex part 21 to stop, it is not limited to this. This slip-out preventing means 19 is suitable when the outer periphery of the elastic water-stop tubular portion 17 is pressed against and fixed to the inner periphery of the cylindrical auxiliary member 14 by its restoring action.

  Next, as shown in FIG. 11, the lining pipe 22 is disposed on the inner circumference of the existing pipe 2 and the elastic water-stop tubular portion 17. In the case of the lining pipe 22, in this example, a cylindrical lining material 23 in a curable soft state is inserted into the existing pipe 2 and the elastic water-stop tubular portion 17, and the existing pipe 2 and the elastic water-stop tubular portion are inserted. A lining tube 22 is formed and disposed by pressing and hardening the peripheral wall surface of the cylindrical lining material 23 to the inner periphery of 17.

  In the method of inserting the tubular lining material 23 into the existing pipe 2 and the elastic water-stop tubular portion 17 and forming and arranging the lining pipe 22 on the inner periphery of the existing pipe 2 and the elastic water-stop tubular portion 17, Well-known techniques are used.

  For example, a flexible tubular lining material 23 impregnated with or coated with an uncured curable resin is used for existing pipes using the techniques disclosed in Japanese Patent Publication No. 7-4853 and Japanese Patent Application Laid-Open No. 2005-90581. 2 and the elastic water-stop tubular portion 17 are inserted, and the peripheral wall surface of the tubular lining material 23 is pressed against the inner periphery of the existing pipe 2 and the elastic water-stop tubular portion 17 to cure the curable resin, thereby the lining pipe 22. Can be formed and arranged. The cylindrical lining material 23 has a three-layer structure of an impermeable inner film layer, a resin-absorbing inner layer impregnated with a curable resin, and an impermeable outer film layer. Examples of the curable resin include a thermosetting resin, a photocurable resin, and a room temperature curable resin. The resin is impregnated into a resin-absorbing inner layer. Moreover, although a polyurethane film is used as an impermeable inner film layer and a polyethylene film is used as an impermeable outer film layer, it is not limited to these.

  Further, by using the technique disclosed in Japanese Patent Laid-Open Nos. 10-278113 and 6-293071, the hard or semi-rigid tubular lining material 23 molded from a thermoplastic resin is attached to the existing pipe 2 and the elastic stopper. It is inserted into the water tubular portion 17, and the tubular lining material 23 is heated and softened, pressurized and expanded to be pressed against the inner periphery of the existing tube 2 and the elastic water-stop tubular portion 17, and then the lining tube 22. May be formed and arranged.

  When the cylindrical lining material 23 is inserted into the existing pipe 2 and the elastic water-stop tubular portion 17, it is inserted over the entire length of the existing pipe 2 divided by the two human holes 3. It is preferable to form and arrange a lining tube 22 made of a tubular lining material 23 inside the water tubular portion 17.

  As another example of the lining tube 22, as shown in FIG. 12, for example, the technique disclosed in Japanese Patent Laid-Open No. 10-82497 can be used to impregnate or apply an uncured curable resin. A certain sheet-like lining material 23a is wound around the repair machine, the repair machine is inserted into the existing pipe 2 and the elastic water-stop tubular portion 17, and is positioned so as to straddle the existing pipe 2 and the elastic water-stop tubular portion 17. Forming and arranging the lining pipe 22 by expanding the sheet-like lining material 23a by air pressure and pressing the sheet-like lining material 23a against the inner circumference of the existing pipe 2 and the elastic water-stop tubular portion 17 to cure the curable resin. Can do.

  Although not shown, other examples of forming the lining pipe 22 and arranging it on the inner circumference of the existing pipe 2 and the elastic water-stop tubular portion 17 are disclosed in, for example, Japanese Patent Publication No. 4-44153 and Japanese Patent Application Laid-Open No. 2003-191329. As disclosed, the lining pipe 22 is formed into an existing pipe 2 and an elastic water stop pipe while the belt-like member is sequentially folded in the circumferential direction and the tip portions of the belt-like member are joined together to form a lining pipe 22 by spiral winding. You may make it arrange | position by sending in the inside of the shape part 17. FIG.

  Thereafter, the filler 24 is filled in the cut portion of the invert concrete 12 in front of the tip portion of the existing pipe 2 that has been cut prior to cutting the tip portion of the existing pipe 2. The filler 24 is not particularly limited. In this example, an elastic material is used as the filler 24. As this elastic material, for example, an elastic water blocking material forming the elastic water blocking tubular portion 17 may be used. Further, the step portion of the lining pipe 22 and the inverted concrete 12 is filled with a filler 25 such as resin or mortar. In this way, the process of implementing the seismic retrofitting method for the existing pipe manhole connection is completed.

  In the drawing, the seismicization of the existing pipe manhole connection 6 is shown in the drawing as a process of making the existing pipe manhole connection 6 on the left side of the figure, but the existing pipe manhole on the right side of the figure is shown. The connection portion 6 is also made earthquake resistant in the same process as described above.

  According to the earthquake resistance construction method for the existing pipe manhole connection part, the tip part of the existing pipe 2 fitted in the pipe hole 5 is located near the outer peripheral wall surface 10 from the inner peripheral wall surface 9 side of the basic peripheral wall portion 4a. Since the cutter is cut to a position within the range not exceeding the outer peripheral wall surface 10, the cutter does not protrude outside the basic peripheral wall portion 4a, and therefore, the space between the outer peripheral wall surface 10 of the basic peripheral wall portion 4a and the periphery of the existing pipe 2 is closed. In this state, it is possible to prevent earth and sand outside the foundation peripheral wall portion 4a from flowing between the outer peripheral wall surface 10 and the periphery of the existing pipe 2 into the pipe hole 5, and to prevent or minimize the inflow of water. The work can be easily performed, and the cutter can damage the buried objects such as underground cables and various fluid buried pipes that are close to the outer periphery of the foundation peripheral wall 4a. There is no fear.

  In addition, the inner wall of the tube hole 5 of the human hole 3 located around the distal end portion of the existing tube 2 to be excised is circularly cut along the existing tube 2 coaxially with the existing tube 2 in the annular excision portion 11. Since the fitting portion 16 of the cylindrical auxiliary member 14 is fitted, the head 15 is brought into contact with the inner peripheral wall surface 9 of the human hole 3, and the cylindrical auxiliary member 14 is liquid-tightly fixed to the human hole 3. The cylindrical auxiliary member 14 is integrated with the peripheral wall 4 of the human hole 3, and the inner periphery of the cylindrical auxiliary member 14 constitutes a part of the tube hole 5 of the peripheral wall 4 of the human hole 3.

  And the lining pipe | tube 22 arrange | positioned in the inner periphery of the elastic water-stop tubular part 17 provided in the existing pipe 2 and the cylindrical auxiliary member 14 plays the role as the existing pipe 2, and the inside of the elastic water-stop tubular part 17 is the inside. The lining pipe 22 in the circumference constitutes an alternative tip portion of the existing pipe 2 fitted to the inner circumference of the cylindrical auxiliary member 14 constituting a part of the pipe hole 5.

  With this configuration, the elastic water-stop tubular portion 17 can absorb the difference in movement between the existing pipe 2 and the peripheral wall 4 of the human hole 3 that occurs when an earthquake occurs.

  That is, the difference in vertical and lateral movement between the existing pipe 2 and the peripheral wall 4 of the human hole 3 is absorbed by the deformation in the thickness direction of the elastic water-stop tubular portion 17, and the existing pipe 2 and the human hole 3 The difference in the axial movement with respect to the peripheral wall 4 is that when the elastic water-stop tubular portion 17 and the lining pipe 22 are bonded, the elastic water-stop tubular portion 17 is deformed in the axial direction and the elastic water-stop tubular portion 17. When the lining pipe 22 is in pressure contact, it is absorbed by the axial deformation of the elastic water blocking tubular portion 17 and the sliding of the lining pipe 22 in the axial direction. When the elastic water-stop tubular portion 17 and the lining pipe 22 are in pressure contact, the difference in axial movement between the existing pipe 2 and the peripheral wall 4 of the human hole 3 is also absorbed by the axial sliding of the lining pipe 22. Therefore, even if the deformation rate of the elastic water-stop tubular portion 17 is small, the difference in the axial movement between the existing pipe 2 and the peripheral wall 4 of the human hole 3 can be reliably absorbed.

  When the difference in movement between the existing pipe 2 and the peripheral wall 4 of the human hole 3 is in the axial direction, the inner diameter of the cylindrical auxiliary member 14 is the same as or larger than the outer diameter of the existing pipe 2. Therefore, the end 2b of the existing pipe 2 enters and exits the cylindrical auxiliary member 14, and there is a risk that the end 2b of the existing pipe 2 destroys the peripheral wall 4 of the human hole 3 and the cylindrical auxiliary member 14. Absent.

  When the difference in movement between the existing pipe 2 and the peripheral wall 4 of the human hole 3 is in the vertical and horizontal directions, the end 2b of the existing pipe 2 that is slightly fitted in the pipe hole 5 is broken and is already installed. Since the pipe and the peripheral wall of the human hole are cut off, the peripheral wall 4 of the human hole 3 and the cylindrical auxiliary member 14 can be prevented from being destroyed, and even if the end 2b of the existing pipe 2 is broken, Thus, since the lining pipe 22 plays a role as the existing pipe 2, the lining pipe 22 can sufficiently supplement the broken portion, and there is no possibility of impairing the function as the existing pipe 2.

  Moreover, as shown in FIG. 3, it cuts into the edge part 2b of the existing pipe 2 after the front end part cutting which fits into the pipe hole 5 of the foundation surrounding wall part 4a in the range which does not reach an outer peripheral surface from an inner peripheral side. When an earthquake occurs and a difference occurs between the movement of the existing pipe 2 and the peripheral wall 4 of the human hole 3, the end 2b of the existing pipe 2 is easily broken, and the end of the existing pipe 2 It is possible to effectively prevent damage to the peripheral wall 4 of the human hole 3 and the cylindrical auxiliary member 14 due to 2b.

  Further, the end face of the elastic water-stop tubular portion 17 is closed by the filler 24 whose lower half is filled with the cut portion of the invert concrete 12, and only the upper half is opened. Then, since the filler 24 is an elastic material, the lower half of the end surface of the elastic water-stop tubular portion 17 is closed with the filler 24 made of an elastic material. As a result, the deformation of the lower half of the end surface of the elastic water-stop tubular portion 17 is absorbed by the filler 24 made of an elastic material, so that the lower half of the end surface of the elastic water-stop tubular portion 17 is also an open surface. Similarly, the elastic water-stop tubular portion 17 can be easily deformed, and thereby the difference in axial movement between the existing pipe 2 and the peripheral wall 4 of the human hole 3 can be more reliably absorbed.

  As described above, in this example, the cut portion of the invert concrete 12 on the front surface of the tip portion 2a of the existing pipe 2 is filled with the filler 24 made of an elastic material, but the filler 24 is a hard material such as mortar. In this case, the end face of the elastic water-stop tubular portion 17 is closed with a filler 24 made of a hard material at the lower half thereof, and the deformation of the elastic water-stop tubular portion 17 is caused by the elastic water-stop tubular portion. It will be absorbed by deformation of only the upper half of the 17 end face.

  Also, as shown in FIG. 10, the elastic water-stop tubular portion 17 extends from the tubular auxiliary member 14 between the tubular auxiliary member 14 and the elastic water-stop tubular portion 17 provided on the inner periphery of the cylindrical auxiliary member 14. If the escape prevention means 19 for preventing the escape is provided, when an earthquake occurs and a difference occurs in the movement between the existing pipe 2 and the peripheral wall 4 of the manhole 3, the elastic water-stop tubular portion 17 has a cylindrical auxiliary. It is possible to prevent the member 14 from slipping out, and the water stop effect can be effectively maintained.

  Further, since the cylindrical auxiliary member 14 is fixed to the human hole 3 by bringing the head 15 into contact with the inner peripheral wall surface 9 of the human hole 3, the head 15 protrudes from the inner peripheral wall surface 9 of the human hole 3. Therefore, the tube hole 5 of the peripheral wall 4 of the human hole 3 becomes longer by the length of the head 15 in the axial direction, and the inner periphery of the cylindrical auxiliary member 14 constituting a part of the tube hole 5 is obtained. Since the elastic water-stop tubular portion 17 provided on the shaft can be provided long in the axial direction, the movement difference can be more effectively absorbed by the elastic water-stop tubular portion 17 and the water stop effect is improved. In addition, it is particularly suitable for human holes with thin walls.

  Moreover, in this example, the axial length of the head 15 in the cylindrical auxiliary member 14 is the advance and retreat movement of the existing pipe 2 in the pipe hole 5 of the peripheral wall 4 of the human hole 3 assumed when an earthquake occurs. Since the amount is set on the basis of the amount, the movement of the lining pipe 22 that plays the role of the existing pipe 2 and the cylindrical auxiliary member 14 that constitutes a part of the pipe hole 5 of the peripheral wall 4 of the human hole 3 is caused by the earthquake. The difference can be reliably absorbed by the elastic water-stop tubular portion 17 provided on the inner periphery of the cylindrical auxiliary member 14.

  Further, in this example, the outer shape of the head 15 of the cylindrical auxiliary member 14 is formed in a substantially conical shape or a pyramid shape so that the outer diameter gradually decreases toward the distal end on the opening side. It is possible to prevent the input such as filth from being caught on the head of the cylindrical auxiliary member 14 protruding from the inner peripheral wall surface 9 of the human hole 3.

  FIGS. 13 and 14 show a second example of implementing the seismic retrofitting method for an existing pipe manhole connection portion according to the present invention, and FIG. 13 shows an annular excision of an existing pipe in a hole in the peripheral wall of the manhole. 14 is a longitudinal sectional view showing a state in which a cylindrical auxiliary member having an elastic water-stop tubular portion is fixed to the inner periphery, and FIG. It is a longitudinal cross-sectional view which shows the state which fixed the cylindrical auxiliary member which provided the elastic water stop tubular part in the periphery.

  In this example, the same steps as those in the first example are omitted with the aid of the drawing of the first example.

  The manhole for carrying out the construction method of this example is the same as the manhole shown in FIG. 1 for carrying out the first example, and the description is omitted with the aid of this figure.

  The seismic retrofitting method of the present example performed on the existing pipe human hole connecting portion 6 having the structure shown in FIG. 1 is first established in the existing pipe fitted in the pipe hole 5 of the basic peripheral wall portion 4a in the peripheral wall 4 of the human hole 3. 2 is cut out from the inner peripheral wall surface 9 side of the base peripheral wall portion 4a to a position in the vicinity of the outer peripheral wall surface 10 and within the range not exceeding the outer peripheral wall surface 10, and around the distal end portion 2a to be excised from the existing pipe 2 The inner wall of the tube hole 5 of the foundation peripheral wall portion 4a located at the position is cut out in an annular shape along the existing tube 2 coaxially with the existing tube 2 to form an annular cut portion 11.

  Since this process is the same as the first example described above, the description of FIG. 2 of the first example and the description of the first example are used, and the detailed description of this process is omitted.

  Even in this example, the end portion 2b of the existing pipe 2 after the distal end portion 2a fitted in the tube hole 5 of the basic peripheral wall portion 4a is cut off in the same manner as the first example. As shown in FIG. 3, the cut 13 may be formed in a range not reaching the outer peripheral surface from the inner peripheral side.

  Next, as shown in FIGS. 13 and 14, a head 15 that contacts the inner peripheral wall surface 9 of the human hole 3 and an outer diameter that is the same as or slightly smaller than the inner diameter of the annular cut portion 11. A tubular portion that includes a fitting portion 16 that can be fitted in the cut portion 11 and has an inner diameter that is the same as or larger than the outer diameter of the existing pipe 2 in the axial direction of the fitting portion 16. An elastically deformable elastic water-stop tubular portion 17 having an outer diameter substantially the same as the inner diameter of the cylindrical auxiliary member 14 and an inner diameter substantially the same as the inner diameter of the existing pipe 2 is liquid-tight on the inner periphery of the auxiliary member 14. Provide.

  In the head 15 of the cylindrical auxiliary member 14, as in the first example, in this example, the axial length is set to the tube hole of the peripheral wall 4 of the human hole 3 that is assumed when an earthquake occurs. 5 is set with reference to the amount of advance / retreat movement of the existing pipe 2. The axial length of the head 15 is preferably 40 mm or more. In addition, the shape of the head portion 15 is formed in a substantially conical shape or a pyramid shape so that the outer shape gradually becomes smaller in diameter toward the opening end.

  The cylindrical auxiliary member 14 configured as described above is formed of concrete, hard rubber, hard plastic, or the like.

  The elastic water-stop tubular portion 17 provided on the inner periphery of the cylindrical auxiliary member 14 configured as described above, means for providing the elastic water-stop tubular portion 17 on the inner periphery of the cylindrical auxiliary member 14, and the tip of the existing pipe 2 Even if the joint material 18 is interposed between the elastic water-stop tubular portion 17 and the means for making the tubular auxiliary member 14 and the elastic water-stop tubular portion 17 liquid-tight, etc. Since it is similar to the example, the description of the first example is cited.

  Further, as another example of the elastic water-stop tubular portion 17, other examples of the elastic water-stop tubular portion 17 shown in FIGS. 7, 8, and 9 shown in the first example are used.

  In addition, the elastic auxiliary tubular portion 17 is prevented from coming out of the cylindrical auxiliary member 14 between the cylindrical auxiliary member 14 and the elastic waterproof tubular portion 17 provided on the inner periphery of the cylindrical auxiliary member 14. The prevention means 19 is preferably provided, and the escape prevention means 19 shown in FIG. 10 of the first example is used as the escape prevention means 19.

  In this way, the fitting portion 16 of the cylindrical auxiliary member 14 provided with the elastic water-stop tubular portion 17 on the inner periphery is fitted into the annular cut portion 11, and the head 15 is brought into contact with the inner peripheral wall surface 9 of the human hole 3. The cylindrical auxiliary member 14 is fixed in a liquid-tight manner to the human hole 3 in contact. In the means for liquid-tightly fixing the cylindrical auxiliary member 14 to the human hole 3, the cylindrical auxiliary member 14 is fixed with an adhesive having a sealing property.

  Next, the lining pipe 22 is disposed on the inner periphery of the existing pipe 2 and the elastic water-stop tubular portion 17. Since this process is the same as the first example described above, the description of FIGS. 11 and 12 of the first example and the description of the first example is cited, and the detailed description of this process is omitted.

  After disposing the lining pipe 22 on the inner periphery of the existing pipe 2 and the elastic water-stop tubular portion 17, the tip of the existing pipe 2 that was excised prior to excision of the tip portion of the existing pipe 2, as in the first example. The cut portion of the invert concrete 12 on the partial front surface is filled with a filler 24, and the step of the lining pipe 22 and the invert concrete 12 is filled with the filler 25 and leveled. In this way, the process of implementing the seismic retrofitting method for the existing pipe manhole connection is completed.

  In the drawing, the seismicization of the existing pipe manhole connection 6 is shown in the drawing as a process of making the existing pipe manhole connection 6 on the left side of the figure, but the existing pipe manhole on the right side of the figure is shown. The connection portion 6 is also made earthquake resistant in the same process as described above.

  According to the seismic retrofitting method of the existing pipe manhole connection part of the second example, the function and effect are the same as those of the first example described above, so the description of the first example is used, and particularly in the second example, Since the cylindrical auxiliary member 14 provided with the elastic water-stop tubular portion 17 on the inner periphery is liquid-tightly fixed to the human hole 3, the cylindrical auxiliary member 14 provided with the elastic water-stop tubular portion 17 is prepared in advance at a factory or the like. Therefore, the field work process can be reduced correspondingly, so that the work can be facilitated and the work time can be shortened.

  15 to 18 show a third example in which the seismic retrofitting method for an existing pipe manhole connection portion according to the present invention is implemented. FIG. 15 shows an annular excision in which an existing pipe is excised in a hole in a peripheral wall of the manhole. FIG. 16 is a longitudinal sectional view showing a state in which a cylindrical temporary frame is provided on the inner periphery of a cylindrical auxiliary member fixed to the part, and FIG. 16 is a longitudinal sectional view showing a state in which a lining pipe is arranged on the inner periphery of the existing tube and the cylindrical temporary frame. 17 is a longitudinal sectional view showing a state in which the cylindrical temporary frame is removed after the lining pipe is arranged on the inner periphery of the existing pipe and the cylindrical temporary frame, and FIG. 18 is a diagram showing the cylindrical temporary frame from the cylindrical auxiliary member. It is a longitudinal cross-sectional view which shows the state which provided the elastic water stop tubular part in the removed space | gap.

  In this example, the same steps as those in the first example are omitted with the aid of the drawing of the first example.

  The manhole for carrying out the construction method of this example is the same as the manhole shown in FIG. 1 for carrying out the first example, and the description is omitted with the aid of this figure.

  The seismic retrofitting method of the present example performed for the existing pipe human hole connecting portion 6 having the structure shown in FIG. 1 is first established in the existing pipe fitted in the pipe hole 5 of the basic peripheral wall portion 4a in the peripheral wall 4 of the human hole 3. 2 is cut out from the inner peripheral wall surface 9 side of the foundation peripheral wall portion 4a to a position in the vicinity of the outer peripheral wall surface 10 and within the range not exceeding the outer peripheral wall surface 10, and around the distal end portion 2a of the existing pipe 2 to be excised The inner wall of the tube hole 5 of the foundation peripheral wall portion 4a located at the position is cut out in an annular manner along the existing tube 2 coaxially with the existing tube 2 to form an annular cut portion 11.

  Since this process is the same as the first example described above, the description of FIG. 2 of the first example and the description of the first example are used, and the detailed description of this process is omitted.

  Further, even in this example, the end 2b of the existing pipe 2 after the distal end portion excision fitted into the tube hole 5 of the basic peripheral wall 4a is similar to the first example in FIG. As shown in FIG. 5, the cuts 13 may be formed in a range not reaching the outer peripheral surface from the inner peripheral side.

  Next, a head 15 that contacts the inner peripheral wall surface 9 of the human hole 3 and an outer diameter that is the same as or slightly smaller than the inner diameter of the annular cut portion 11 and can be fitted into the annular cut portion 11 An annular fitting portion 16 of a cylindrical auxiliary member 14 provided with a joining portion 16 and having an inner diameter that is the same as or larger than the outer diameter of the existing pipe 2 in the axial direction of the fitting portion 16 The tubular auxiliary member 14 is fixed to the human hole 3 in a liquid-tight manner by fitting into the cut portion 11 and bringing the head 15 into contact with the inner peripheral wall surface 9 of the human hole 3. Since this process is the same as the first example described above, the description of FIGS. 4 and 5 of the first example and the description of the first example is cited, and the detailed description of this process is omitted.

  Next, as shown in FIG. 15, a cylindrical shape having an outer diameter that is substantially the same as the inner diameter of the cylindrical auxiliary member 14 and an inner diameter that is substantially the same as the inner diameter of the existing pipe 2 on the inner periphery of the cylindrical auxiliary member 14. A temporary frame 26 is provided. The cylindrical temporary frame 26 is removed later, and it is preferable to form a slit in the axial direction or a spiral slit for easy removal.

  Next, as shown in FIG. 16, the lining pipe 22 is disposed on the inner periphery of the existing pipe 2 and the cylindrical temporary frame 26. Since this step is the same as the first example described above, the description of the first example is cited and the detailed description of this step is omitted.

  In the arrangement of the lining pipe 22, not only the entire length of the existing pipe 2 but also the existing pipe 2 and the elastic water blocking tubular portion 17 are straddled as in the arrangement example shown as another example of the first example. Can be arranged at some positions.

  Next, as shown in FIG. 17, after arranging the lining pipe 22 on the inner periphery of the existing pipe 2 and the cylindrical temporary frame 26, the cylindrical temporary frame 26 provided in the cylindrical auxiliary member 14 is removed, and FIG. As shown in FIG. 18, an elastic water-stop tubular portion 17 that can be elastically deformed is provided in a liquid-tight manner in a space obtained by removing the cylindrical temporary frame 26 from the cylindrical auxiliary member 14. The elastic water-stop tubular portion 17 provided in the gap obtained by removing the cylindrical temporary frame 26 from the cylindrical auxiliary member 14, and the elastic water-stop tubular portion 17 provided in the gap obtained by removing the cylindrical temporary frame 26 from the cylindrical auxiliary member 14. Means, a means for interposing a joint material 18 between the tip of the existing pipe 2 and the tip of the elastic water-stop tubular portion 17, a means for making the space between the cylindrical auxiliary member 14 and the elastic water-stop tubular portion 17 liquid-tight, etc. Since it is the same as the first example, the description of the first example is cited.

  Further, as another example of the elastic water-stop tubular portion 17, other examples of the elastic water-stop tubular portion 17 shown in FIGS. 7, 8, and 9 shown in the first example are used. In addition, the elastic auxiliary tubular portion 17 is prevented from coming out of the cylindrical auxiliary member 14 between the cylindrical auxiliary member 14 and the elastic waterproof tubular portion 17 provided on the inner periphery of the cylindrical auxiliary member 14. The prevention means 19 is preferably provided, and the escape prevention means 19 shown in FIG. 10 of the first example is used as the escape prevention means 19. Further, in this example, in addition to the first example described above, the elastic water-stop tubular portion 17 may be formed by injecting and solidifying a liquid elastic water-stop material.

  In this manner, after the elastic water-stopping tubular portion 17 that is elastically deformable is liquid-tightly provided in the gap obtained by removing the cylindrical temporary frame 26 from the cylindrical auxiliary member 14, similarly to the first example shown in FIG. 11. The filler 24 is filled in the cut portion of the invert concrete 12 in front of the tip portion of the existing pipe 2 which has been cut prior to the cutting of the tip portion of the existing pipe 2, and the lining pipe 22 and the inverted concrete are further filled with the filler 25. Fill and level 12 steps. In this way, the process of implementing the seismic retrofitting method for the existing pipe manhole connection is completed.

  In the drawing, the seismicization of the existing pipe manhole connection 6 is shown in the drawing as a process of making the existing pipe manhole connection 6 on the left side of the figure, but the existing pipe manhole on the right side of the figure is shown. The connection portion 6 is also made earthquake resistant in the same process as described above.

  According to the seismic retrofitting method of the existing pipe manhole connection part of the third example, the function and effect are the same as those of the first example described above, so the explanation of the first example is used. In particular, in the third example, Since the elastic water-stop tubular portion 17 is provided in the space obtained by removing the cylindrical temporary frame 26 from the cylindrical auxiliary member 14, the elastic water-stop tubular portion 17 is formed by injecting a liquid elastic water-stop material into the space and solidifying it. It can also be formed.

  FIGS. 19 to 21 show a fourth example of implementing the seismic retrofitting method for the existing pipe manhole connection portion according to the present invention, and FIG. 19 shows an annular excision in which the existing pipe is cut in the hole of the peripheral wall of the manhole. Fig. 20 is a longitudinal sectional view showing a state in which an elastic water-stop tubular portion is provided on the inner periphery of the cylindrical auxiliary member fixed to the part, and Fig. 20 is a steel pipe fitted into the elastic water-stop tubular portion provided on the inner periphery of the cylindrical auxiliary member. FIG. 21 is a longitudinal sectional view showing a state in which a lining pipe is arranged on the inner periphery of an existing pipe and a steel pipe.

  In this example, the same steps as those in the first example are omitted with the aid of the drawing of the first example.

  The manhole for carrying out the construction method of this example is the same as the manhole shown in FIG. 1 for carrying out the first example, and the description is omitted with the aid of this figure.

  The seismic retrofitting method of the present example performed on the existing pipe human hole connecting portion 6 having the structure shown in FIG. 1 is first established in the existing pipe fitted in the pipe hole 5 of the basic peripheral wall portion 4a in the peripheral wall 4 of the human hole 3. 2 is cut out from the inner peripheral wall surface 9 side of the base peripheral wall portion 4a to a position in the vicinity of the outer peripheral wall surface 10 and within the range not exceeding the outer peripheral wall surface 10, and around the distal end portion 2a to be excised from the existing pipe 2 The inner wall of the tube hole 5 of the foundation peripheral wall portion 4a located at the position is cut out in an annular shape along the existing tube 2 coaxially with the existing tube 2 to form an annular cut portion 11.

  Since this process is the same as the first example described above, the description of FIG. 2 of the first example and the description of the first example are used, and the detailed description of this process is omitted.

  Further, even in this example, the end 2b of the existing pipe 2 after the distal end portion excision fitted into the tube hole 5 of the basic peripheral wall 4a is similar to the first example in FIG. As shown in FIG. 5, the cuts 13 may be formed in a range not reaching the outer peripheral surface from the inner peripheral side.

  Next, a head 15 that contacts the inner peripheral wall surface 9 of the human hole 3 and an outer diameter that is the same as or slightly smaller than the inner diameter of the annular cut portion 11 and can be fitted into the annular cut portion 11 An annular fitting portion 16 of a cylindrical auxiliary member 14 provided with a joining portion 16 and having an inner diameter that is the same as or larger than the outer diameter of the existing pipe 2 in the axial direction of the fitting portion 16 The tubular auxiliary member 14 is fixed to the human hole 3 in a liquid-tight manner by fitting into the cut portion 11 and bringing the head 15 into contact with the inner peripheral wall surface 9 of the human hole 3. Since this process is the same as the first example described above, the description of FIGS. 4 and 5 of the first example and the description of the first example is cited, and the detailed description of this process is omitted.

  Next, as shown in FIG. 19, the inner circumference of the cylindrical auxiliary member 14 is elastically deformed having an outer diameter that is substantially the same as the inner diameter of the cylindrical auxiliary member 14 and an inner diameter that is substantially the same as the inner diameter of the existing pipe 2. Possible elastic waterproofing tubular part 17 is provided in a liquid-tight manner. In this example, the inner diameter of the elastic water-stop tubular portion 17 is slightly larger than the inner diameter of the existing pipe 2.

  An elastic water-stop tubular portion 17 provided on the inner periphery of the cylindrical auxiliary member 14, means for providing the elastic water-stop tubular portion 17 on the inner periphery of the tubular auxiliary member 14, the tip of the existing pipe 2 and the elastic water-stop tubular portion 17. Since the joint material 18 is interposed between the tip of the tube and the means for liquid-tightening the space between the tubular auxiliary member 14 and the elastic water-stop tubular portion 17, the first example is the same. The explanation of the example is cited.

  Further, as another example of the elastic water-stop tubular portion 17, other examples of the elastic water-stop tubular portion 17 shown in FIGS. 7, 8, and 9 shown in the first example are used. In addition, the elastic auxiliary tubular portion 17 is prevented from coming out of the cylindrical auxiliary member 14 between the cylindrical auxiliary member 14 and the elastic waterproof tubular portion 17 provided on the inner periphery of the cylindrical auxiliary member 14. The prevention means 19 is preferably provided, and the escape prevention means 19 shown in FIG. 10 of the first example is used as the escape prevention means 19.

  Next, as shown in FIG. 20, a thin steel pipe 27 having an inner diameter substantially the same as the inner diameter of the existing pipe 2 is liquid-tightened in an elastic water-stop tubular portion 17 provided on the inner periphery of the cylindrical auxiliary member 14. To fit. In the means for making the space between the elastic water-stop tubular portion 17 and the steel pipe 27 liquid-tight, the outer diameter of the steel pipe 27 is set slightly larger than the inner diameter of the elastic water-stop tubular portion 17, The outer periphery of the steel pipe 27 may be brought into pressure contact by the restoring action of the elastic water-stop tubular portion 17 so that liquid tightness can be achieved, or an adhesive having a sealing property between the elastic water-stop tubular portion 17 and the steel pipe 27. It may be adhered with.

  The steel pipe 27 is preferably made of stainless steel. In addition, the steel pipe 27 may not be formed in a cylindrical shape from the beginning. Although not shown, the steel pipe 27 is divided into a plurality of parts in the axial direction and is fitted into the elastic water-stop tubular portion 17. You may make it assemble in the cylinder shape within the part 17. FIG.

  Next, as shown in FIG. 21, the lining pipe 22 is disposed on the inner periphery of the existing pipe 2 and the steel pipe 27. Since this process is the same as the first example described above, the description of the first example is cited and the detailed description of this process is omitted.

  In the arrangement of the lining pipe 22, not only the entire length of the existing pipe 2 but also the existing pipe 2 and the elastic water blocking tubular portion 17 are straddled as in the arrangement example shown as another example of the first example. Can be arranged at some positions.

  After disposing the lining pipe 22 on the inner periphery of the existing pipe 2 and the elastic water-stop tubular portion 17, the tip of the existing pipe 2 that was excised prior to excision of the tip portion of the existing pipe 2, as in the first example. The cut portion of the invert concrete 12 on the partial front surface is filled with a filler 24, and the step of the lining pipe 22 and the invert concrete 12 is filled with the filler 25 and leveled. In this way, the process of implementing the seismic retrofitting method for the existing pipe manhole connection is completed.

  In the drawing, the seismicization of the existing pipe manhole connection 6 is shown in the drawing as a process of making the existing pipe manhole connection 6 on the left side of the figure, but the existing pipe manhole on the right side of the figure is shown. The connection portion 6 is also made earthquake resistant in the same process as described above.

  According to the seismic retrofitting method of the existing pipe manhole connection part of the fourth example, the effect is the same as that of the first example described above, so the explanation of the first example is used, and particularly in the fourth example, Since the steel pipe 27 is provided in the elastic water-stop tubular portion 17 provided on the inner periphery of the cylindrical auxiliary member 14, the steel pipe 27 and the lining pipe 22 serve as the existing pipe 2. The strength and function as 2 can be more fully supplemented.

  22 and 23 show a fifth example in which the seismic retrofitting method for an existing pipe manhole connection portion according to the present invention is carried out. FIG. 22 shows an annular excision in which an existing pipe is excised in a hole in a peripheral wall of the human hole. 23 is a longitudinal sectional view showing a state in which a cylindrical auxiliary member provided with an elastic water-stop tubular portion fitted with a steel pipe is fixed on the inner periphery, FIG. It is a longitudinal cross-sectional view which shows the state which fixed the cylindrical auxiliary member which provided the elastic water stop tubular part which fitted the steel pipe in the cut part to the inner periphery.

  In this example, the same steps as those in the first example are omitted with the aid of the drawing of the first example.

  The manhole for carrying out the construction method of this example is the same as the manhole shown in FIG. 1 for carrying out the first example, and the description is omitted with the aid of this figure.

  The seismic retrofitting method of the present example performed for the existing pipe human hole connecting portion 6 having the structure shown in FIG. 1 is first established in the existing pipe fitted in the pipe hole 5 of the basic peripheral wall portion 4a in the peripheral wall 4 of the human hole 3. 2 is cut out from the inner peripheral wall surface 9 side of the foundation peripheral wall portion 4a to a position in the vicinity of the outer peripheral wall surface 10 and within the range not exceeding the outer peripheral wall surface 10, and around the distal end portion 2a of the existing pipe 2 to be excised The inner wall of the tube hole 5 of the foundation peripheral wall portion 4a located at the position is cut out in an annular manner along the existing tube 2 coaxially with the existing tube 2 to form an annular cut portion 11.

  Since this process is the same as the first example described above, the description of FIG. 2 of the first example and the description of the first example are used, and the detailed description of this process is omitted.

  Further, even in this example, the end 2b of the existing pipe 2 after the distal end portion excision fitted into the tube hole 5 of the basic peripheral wall 4a is similar to the first example in FIG. As shown in FIG. 5, the cuts 13 may be formed in a range not reaching the outer peripheral surface from the inner peripheral side.

  Next, as shown in FIGS. 22 and 23, a head 15 that contacts the inner peripheral wall surface 9 of the human hole 3 and an outer diameter that is the same as or slightly smaller than the inner diameter of the annular cut portion 11 are formed. A tubular portion that includes a fitting portion 16 that can be fitted in the cut portion 11 and has an inner diameter that is the same as or larger than the outer diameter of the existing pipe 2 in the axial direction of the fitting portion 16. An elastically deformable elastic water-stop tubular portion 17 having an outer diameter substantially the same as the inner diameter of the cylindrical auxiliary member 14 and an inner diameter substantially the same as the inner diameter of the existing pipe 2 is liquid-tight on the inner periphery of the auxiliary member 14. A thin steel pipe 27 having an inner diameter substantially the same as the inner diameter of the existing pipe 2 is liquid-tightly fitted in the elastic water-stop tubular portion 17 provided on the inner periphery of the cylindrical auxiliary member 14.

  In the head 15 of the cylindrical auxiliary member 14, as in the first example, in this example, the axial length is set to the tube hole of the peripheral wall 4 of the human hole 3 that is assumed when an earthquake occurs. 5 is set with reference to the amount of advance / retreat movement of the existing pipe 2. The axial length of the head 15 is preferably 40 mm or more. In addition, the shape of the head portion 15 is formed in a substantially conical shape or a pyramid shape so that the outer shape gradually becomes smaller in diameter toward the opening end.

  The cylindrical auxiliary member 14 configured as described above is formed of concrete, hard rubber, hard plastic, or the like.

  The elastic water-stop tubular portion 17 provided on the inner periphery of the cylindrical auxiliary member 14 configured as described above, means for providing the elastic water-stop tubular portion 17 on the inner periphery of the cylindrical auxiliary member 14, and the tip of the existing pipe 2 Even if the joint material 18 is interposed between the cylindrical auxiliary member 14 and the elastic water-stop tubular portion 17, the joint member 18 is interposed between the cylindrical auxiliary member 14 and the elastic water-stop tubular portion 17. Since it is the same as that of one example, the explanation of the first example is cited.

  Further, as another example of the elastic water-stop tubular portion 17, other examples of the elastic water-stop tubular portion 17 shown in FIGS. 7, 8, and 9 shown in the first example are used.

  In addition, the elastic auxiliary tubular portion 17 is prevented from coming out of the cylindrical auxiliary member 14 between the cylindrical auxiliary member 14 and the elastic waterproof tubular portion 17 provided on the inner periphery of the cylindrical auxiliary member 14. The prevention means 19 is preferably provided, and the escape prevention means 19 shown in FIG. 10 of the first example is used as the escape prevention means 19.

  Further, a steel pipe 27 fitted into an elastic water-stop tubular portion 17 provided on the inner periphery of the cylindrical auxiliary member 14, means for fitting the steel pipe 27 into the elastic water-stop tubular portion 17, and the elastic water-stop tubular portion 17. The means for making the space between the steel pipe 27 and the steel pipe 27 is the same as the above-described fourth example, so the description of the fourth example is incorporated.

  In this way, the fitting portion 16 of the cylindrical auxiliary member 14 provided with the elastic water-stop tubular portion 17 fitted with the steel pipe 27 on the inner periphery is fitted into the annular cut portion 11, and the head portion 15 of the human hole 3 is fitted. The cylindrical auxiliary member 14 is fixed to the human hole 3 in a liquid-tight manner by contacting the inner peripheral wall surface 9. In the means for liquid-tightly fixing the cylindrical auxiliary member 14 to the human hole 3, the cylindrical auxiliary member 14 is fixed with an adhesive having a sealing property.

  Next, the lining pipe 22 is disposed on the inner periphery of the existing pipe 2 and the steel pipe 27. Since this process is the same as the above-described fourth example, the description of FIG. 21 of the fourth example and the description of the fourth example are cited, and the detailed description of this process is omitted.

  After the lining pipe 22 is arranged on the inner circumferences of the existing pipe 2 and the steel pipe 27, the invert of the front surface of the existing pipe 2 that has been excised prior to the excision of the distal end portion of the existing pipe 2 as in the first example. The cut portion of the concrete 12 is filled with the filler 24, and the step of the lining pipe 22 and the inverted concrete 12 is filled with the filler 25 and leveled. In this way, the process of implementing the seismic retrofitting method for the existing pipe manhole connection is completed.

  In the drawing, the seismicization of the existing pipe manhole connection 6 is shown in the drawing as a process of making the existing pipe manhole connection 6 on the left side of the figure, but the existing pipe manhole on the right side of the figure is shown. The connection portion 6 is also made earthquake resistant in the same process as described above.

  According to the seismic retrofitting method of the existing pipe manhole connection part of the fifth example, the action and effect are the same as those of the fourth example described above, so the explanation of the fourth example is used, and particularly in the fifth example, Since the cylindrical auxiliary member 14 provided with the elastic water-stop tubular portion 17 fitted with the steel pipe 27 on the inner periphery is liquid-tightly fixed to the human hole 3, the elastic water-stop tubular portion 17 fitted with the steel pipe 27 is arranged on the inner periphery. Since the cylindrical auxiliary member 14 provided in can be prepared in advance in a factory or the like, the field work process can be reduced correspondingly, so that the work can be facilitated and the work time can be shortened.

  24 and 25 show a sixth example in which the seismic retrofitting method for an existing pipe manhole connection portion according to the present invention is implemented, and FIG. 24 shows an annular excision in which an existing pipe is excised in a hole in a peripheral wall of the manhole. FIG. 25 is a longitudinal sectional view showing a state in which the end of the steel pipe is fitted into the existing pipe after partial cutting of the distal end through the inner periphery of the elastic water-stop tubular part in the cylindrical auxiliary member fixed to the part. FIG. 25 shows the existing pipe and the steel pipe. It is a longitudinal cross-sectional view which shows the state which has arrange | positioned the lining pipe | tube in the inner periphery.

  In this example, the same steps as those in the first example are omitted with the aid of the drawing of the first example.

  The manhole for carrying out the construction method of this example is the same as the manhole shown in FIG. 1 for carrying out the first example, and the description is omitted with the aid of this figure.

  As shown in FIG. 24, the seismic improvement method of the present example performed on the existing pipe human hole connecting portion 6 having the structure shown in FIG. 1 is an annular shape obtained by cutting the existing pipe 2 in the pipe hole 5 of the peripheral wall 4 of the human hole 3. The end portion of the steel pipe 27 is fitted into the existing pipe 2 after the distal end portion 2a is cut through the inner periphery of the elastic water-stop tubular portion 17 in the cylindrical auxiliary member 14 fixed to the cut portion 11.

  A cylindrical auxiliary member 14 in which an annular water-removable tubular portion 17 that is elastically deformable on the inner periphery is provided in a liquid-tight manner in an annular cut-out portion 11 in which the existing tube 2 is cut in the tube hole 5 in the peripheral wall 4 of the human hole 3 is liquid-tight. The process of fixing to is similar to the process up to the state shown in FIG. 6 of the first example and the process up to the state shown in FIG. 14 of the second example, so the description of the first example and the second example is cited. A detailed description of this process is omitted.

  The steel pipe 27 fitting the tip into the existing pipe 2 after cutting the tip portion 2a through the inner periphery of the elastic water-stop tubular portion 17 in the cylindrical auxiliary member 14 is preferably made of stainless steel. Further, the steel pipe 27 may not be formed in a cylindrical shape from the beginning, and although not shown, the steel pipe 27 is divided into a plurality of parts in the axial direction and passed through the inner periphery of the elastic water-stop tubular portion 17 in the cylindrical auxiliary member 14. When fitting the end of the steel pipe 27 into the existing pipe 2 after the portion 2a is cut off, it may be assembled into a cylindrical shape.

  Further, the steel pipe 27 whose tip is fitted into the existing pipe 22 through the inner periphery of the elastic water-stop tubular portion 17 is to be at least liquid-tight with the elastic water-stop tubular portion 17. Since it is the same as that of the said 4th example in the means to make between 27 and the elastic water stop tubular part 17 liquid-tight, description of a 4th example is used.

  Next, as shown in FIG. 25, the lining pipe 22 is disposed on the inner periphery of the existing pipe 2 and the steel pipe 27. Since this process is the same as the first example described above, the description of the first example is cited and the detailed description of this process is omitted.

  In the arrangement of the lining pipe 22, not only the entire length of the existing pipe 2 but also the existing pipe 2 and the elastic water blocking tubular portion 17 are straddled as in the arrangement example shown as another example of the first example. Can be arranged at some positions.

  After the lining pipe 22 is arranged on the inner circumferences of the existing pipe 2 and the steel pipe 27, the invert of the front surface of the existing pipe 2 that has been excised prior to the excision of the distal end portion of the existing pipe 2 as in the first example. The cut portion of the concrete 12 is filled with the filler 24, and the step of the lining pipe 22 and the inverted concrete 12 is filled with the filler 25 and leveled. In this way, the process of implementing the seismic retrofitting method for the existing pipe manhole connection is completed.

  In the drawing, the seismicization of the existing pipe manhole connection 6 is shown in the drawing as a process of making the existing pipe manhole connection 6 on the left side of the figure, but the existing pipe manhole on the right side of the figure is shown. The connection portion 6 is also made earthquake resistant in the same process as described above.

  According to the seismic retrofitting method of the existing pipe manhole connection part of the sixth example, the operational effect is the same as that of the fourth example described above, so the explanation of the fourth example is used, and particularly in the sixth example, Since the end portion of the steel pipe 27 is fitted into the existing pipe 2 after the distal end portion 2a is cut through the inner periphery of the elastic water-stop tubular portion 17 in the cylindrical auxiliary member 14, the steel pipe 27 and the lining are fitted. The pipe 22 serves as the existing pipe 2, and the strength and function of the existing pipe 2 can be more sufficiently supplemented by the steel pipe 27.

  26 and 27 show a seventh example of implementing the seismic retrofitting method for an existing pipe manhole connection portion according to the present invention. FIG. 26 shows an annular excision in which an existing pipe is excised in the hole of the peripheral wall of the manhole. FIG. 27 is a longitudinal sectional view showing a state in which the end of the steel pipe is fitted into the existing pipe after the tip portion is cut through the inner periphery of the cylindrical auxiliary member fixed to the section, and FIG. 27 is a view between the steel pipe and the cylindrical auxiliary member. It is a longitudinal cross-sectional view which shows the state which provided the elastic water stop tubular part in.

  In this example, the same steps as those in the first example are omitted with the aid of the drawing of the first example.

  The manhole for carrying out the construction method of this example is the same as the manhole shown in FIG. 1 for carrying out the first example, and the description is omitted with the aid of this figure.

  The seismic retrofitting method of the present example performed for the existing pipe human hole connecting portion 6 having the structure shown in FIG. 1 is first established in the existing pipe fitted in the pipe hole 5 of the basic peripheral wall portion 4a in the peripheral wall 4 of the human hole 3. 2 is cut out from the inner peripheral wall surface 9 side of the foundation peripheral wall portion 4a to a position in the vicinity of the outer peripheral wall surface 10 and within the range not exceeding the outer peripheral wall surface 10, and around the distal end portion 2a of the existing pipe 2 to be excised The inner wall of the tube hole 5 of the foundation peripheral wall portion 4a located at the position is cut out in an annular manner along the existing tube 2 coaxially with the existing tube 2 to form an annular cut portion 11.

  Since this process is the same as the first example described above, the description of FIG. 2 of the first example and the description of the first example are used, and the detailed description of this process is omitted.

  Further, even in this example, the end 2b of the existing pipe 2 after the distal end portion excision fitted into the tube hole 5 of the basic peripheral wall 4a is similar to the first example in FIG. As shown in FIG. 5, the cuts 13 may be formed in a range not reaching the outer peripheral surface from the inner peripheral side.

  Next, a head 15 that contacts the inner peripheral wall surface 9 of the human hole 3 and an outer diameter that is the same as or slightly smaller than the inner diameter of the annular cut portion 11 and can be fitted into the annular cut portion 11 An annular fitting portion 16 of a cylindrical auxiliary member 14 provided with a joining portion 16 and having an inner diameter that is the same as or larger than the outer diameter of the existing pipe 2 in the axial direction of the fitting portion 16 The tubular auxiliary member 14 is fixed to the human hole 3 in a liquid-tight manner by fitting into the cut portion 11 and bringing the head 15 into contact with the inner peripheral wall surface 9 of the human hole 3. Since this process is the same as the first example described above, the description of FIGS. 4 and 5 of the first example and the description of the first example is cited, and the detailed description of this process is omitted.

  Next, as shown in FIG. 26, the distal end portion 2 a is cut through the inner circumference of the cylindrical auxiliary member 14 fixed to the annular cut portion 11 cut out of the existing tube 2 in the tube hole 5 of the peripheral wall 4 of the human hole 3. The end of the steel pipe 27 is fitted into the existing existing pipe 2. The steel pipe 27 is preferably made of stainless steel. In addition, the steel pipe 27 may not be formed in a cylindrical shape from the beginning, and although not illustrated, the steel pipe 27 is divided into a plurality of parts in the axial direction, and the end of the steel pipe 27 is placed in the existing pipe 2 after the distal end portion 2a is cut off. When they are fitted, they may be assembled into a cylindrical shape.

  Next, as shown in FIG. 27, an elastic water-stop tubular portion 17 that can be elastically deformed is provided between the steel pipe 27 and the cylindrical auxiliary member 14 in a liquid-tight manner.

  An elastic water-stop tubular portion 17 provided between the steel pipe 27 and the cylindrical auxiliary member 14, a means for providing the elastic water-stop tubular portion 17 between the steel pipe 27 and the cylindrical auxiliary member 14, the tip of the existing pipe 2 and the elasticity For the means for interposing the joint material 18 between the distal end of the water-stop tubular portion 17 and the means for making the steel tube 27 and the tubular auxiliary member 14 and the elastic water-stop tubular portion 17 liquid-tight, etc. Since it is the same as that of a 1st example and a 4th example, description of a 1st example and a 4th example is used.

  Further, as another example of the elastic water-stop tubular portion 17, other examples of the elastic water-stop tubular portion 17 shown in FIGS. 7, 8, and 9 shown in the first example are used. In addition, the elastic auxiliary tubular portion 17 is prevented from coming out of the cylindrical auxiliary member 14 between the cylindrical auxiliary member 14 and the elastic waterproof tubular portion 17 provided on the inner periphery of the cylindrical auxiliary member 14. The prevention means 19 is preferably provided, and the escape prevention means 19 shown in FIG. 10 of the first example is used as the escape prevention means 19. Further, in this example, in addition to the first example described above, the elastic water-stop tubular portion 17 may be formed by injecting and solidifying a liquid elastic water-stop material.

  Next, as shown in FIG. 25 of the sixth example, the lining pipe 22 is disposed on the inner periphery of the existing pipe 2 and the steel pipe 27. Since this process is the same as the first example described above, the description of the first example is cited and the detailed description of this process is omitted.

  In the arrangement of the lining pipe 22, not only the entire length of the existing pipe 2 but also the existing pipe 2 and the elastic water blocking tubular portion 17 are straddled as in the arrangement example shown as another example of the first example. Can be arranged at some positions.

  After the lining pipe 22 is arranged on the inner circumferences of the existing pipe 2 and the steel pipe 27, the invert of the front surface of the existing pipe 2 that has been excised prior to the excision of the distal end portion of the existing pipe 2 as in the first example. The cut portion of the concrete 12 is filled with the filler 24, and the step of the lining pipe 22 and the inverted concrete 12 is filled with the filler 25 and leveled. In this way, the process of implementing the seismic retrofitting method for the existing pipe manhole connection is completed.

  In the drawing, the seismicization of the existing pipe manhole connection 6 is shown in the drawing as a process of making the existing pipe manhole connection 6 on the left side of the figure, but the existing pipe manhole on the right side of the figure is shown. The connection portion 6 is also made earthquake resistant in the same process as described above.

  According to the seismic retrofitting method of the existing pipe manhole connection part of the seventh example, the operational effect is the same as that of the sixth example described above, so the explanation of the sixth example is used, and particularly in the seventh example, Since the elastic water-stop tubular portion 17 is liquid-tightly provided between the steel pipe 27 and the cylindrical auxiliary member 14, the elastic water-stop tubular portion 17 is formed by injecting a liquid elastic water-stop material into the gap and solidifying it. It can also be provided.

  28 and 29 show an eighth example in which the seismic retrofitting method for the existing pipe human hole connection portion according to the present invention is carried out. FIG. 28 shows the state after the tip portion is cut through the hole in the peripheral wall of the human hole. A cylindrical auxiliary with an elastic water-stop tubular part between the steel pipe and the annular cut-out part where the end part of the existing pipe in the pipe hole in the peripheral wall of the human hole is cut off. 29 is a longitudinal sectional view showing a state in which a member is fixed. FIG. 29 is a diagram showing a state where a steel pipe and a peripheral wall of a human hole are fitted into an existing pipe after the tip portion is cut through a hole in the peripheral wall of the human hole. It is a longitudinal cross-sectional view which shows the state which fixed the cylindrical auxiliary member which provided the elastic water-stop tubular part between the cyclic | annular cutting parts which excised the front-end | tip part of the existing pipe | tube in a hole.

  In this example, the same steps as those in the first example are omitted with the aid of the drawing of the first example.

  The manhole for carrying out the construction method of this example is the same as the manhole shown in FIG. 1 for carrying out the first example, and the description is omitted with the aid of this figure.

  The seismic retrofitting method of the present example performed on the existing pipe human hole connecting portion 6 having the structure shown in FIG. 1 is first established in the existing pipe fitted in the pipe hole 5 of the basic peripheral wall portion 4a in the peripheral wall 4 of the human hole 3. 2 is cut out from the inner peripheral wall surface 9 side of the base peripheral wall portion 4a to a position in the vicinity of the outer peripheral wall surface 10 and within the range not exceeding the outer peripheral wall surface 10, and around the distal end portion 2a to be excised from the existing pipe 2 The inner wall of the tube hole 5 of the foundation peripheral wall portion 4a located at the position is cut out in an annular shape along the existing tube 2 coaxially with the existing tube 2 to form an annular cut portion 12.

  Since this process is the same as the first example described above, the description of FIG. 2 of the first example and the description of the first example are used, and the detailed description of this process is omitted.

  Even in this example, the end portion 2b of the existing pipe 2 after the distal end portion 2a fitted in the tube hole 5 of the basic peripheral wall portion 4a is cut off in the same manner as the first example. As shown in FIG. 3, the cut 13 may be formed in a range not reaching the outer peripheral surface from the inner peripheral side.

  Next, as shown in FIGS. 28 and 29, the end of the thin steel pipe 27 is fitted into the existing pipe 2 after the distal end portion 2 a is cut through the pipe hole 5 of the peripheral wall 4 of the human hole 3. The steel pipe 27 is preferably made of stainless steel. In addition, the steel pipe 27 may not be formed in a cylindrical shape from the beginning. Although not shown, the steel pipe 27 is divided into a plurality of parts in the axial direction, and the steel pipe 27 is cut into the existing pipe 2 after the distal end portion 2a is cut through the pipe hole 5. When the end portions of 27 are fitted, they may be assembled into a cylindrical shape.

  The head 15 that contacts the inner peripheral wall surface 9 of the human hole 3 and a fitting that has an outer diameter that is the same as or slightly smaller than the inner diameter of the annular cut portion 11 and can be fitted into the annular cut portion 11 A cylindrical auxiliary member 14 is provided on the inner periphery of the cylindrical auxiliary member 14 provided with a portion 16 and having an inner diameter that is the same as or larger than the outer diameter of the existing pipe 2 in the axial direction of the fitting portion 16. An elastically deformable elastic water-stop tubular portion 17 having an outer diameter that is substantially the same as the inner diameter of the member 14 and an inner diameter that is substantially the same as the inner diameter of the existing pipe 2 is provided in a liquid-tight manner. The cylindrical auxiliary member 14 provided with the portion 17 is fixed in a liquid-tight manner between the steel tube 27 and the annular excision 11 obtained by excising the tip 2a of the existing tube 2 in the tube hole 5 of the peripheral wall 4 of the human hole 3.

  In the head 15 of the cylindrical auxiliary member 14, as in the first example, in this example, the axial length is set to the tube hole of the peripheral wall 4 of the human hole 3 that is assumed when an earthquake occurs. 5 is set with reference to the amount of advance / retreat movement of the existing pipe 2. The axial length of the head 15 is preferably 40 mm or more. In addition, the shape of the head portion 15 is formed in a substantially conical shape or a pyramid shape so that the outer shape gradually becomes smaller in diameter toward the opening end.

  The cylindrical auxiliary member 14 configured as described above is formed of concrete, hard rubber, hard plastic, or the like.

  The elastic water-stop tubular portion 17 provided on the inner periphery of the cylindrical auxiliary member 14 configured as described above, means for providing the elastic water-stop tubular portion 17 on the inner periphery of the cylindrical auxiliary member 14, and the tip of the existing pipe 2 Even if the joint material 18 is interposed between the elastic water-stop tubular portion 17 and the means for making the tubular auxiliary member 14 and the elastic water-stop tubular portion 17 liquid-tight, etc. Since it is similar to the example, the description of the first example is cited.

  Further, as another example of the elastic water-stop tubular portion 17, other examples of the elastic water-stop tubular portion 17 shown in FIGS. 7, 8, and 9 shown in the first example are used.

  In addition, the elastic auxiliary tubular portion 17 is prevented from coming out of the cylindrical auxiliary member 14 between the cylindrical auxiliary member 14 and the elastic waterproof tubular portion 17 provided on the inner periphery of the cylindrical auxiliary member 14. The prevention means 19 is preferably provided, and the escape prevention means 19 shown in FIG. 10 of the first example is used as the escape prevention means 19.

  In fixing the cylindrical auxiliary member 14 provided with the elastic water-stop tubular portion 17 between the steel pipe 27 and the annular cutout portion 11, the fitting portion 16 of the cylindrical auxiliary member 14 is placed in the annular cutout portion 11. The head 15 is fitted and brought into contact with the inner peripheral wall surface 9 of the human hole 3 to be fixed. In the means for liquid-tightly fixing the cylindrical auxiliary member 14 to the human hole 3, the cylindrical auxiliary member 14 is fixed with an adhesive having a sealing property.

  Next, as shown in FIG. 25 of the sixth example, the lining pipe 22 is disposed on the inner periphery of the existing pipe 2 and the steel pipe 27. Since this process is the same as the first example described above, the description of the first example is cited and the detailed description of this process is omitted.

  In the arrangement of the lining pipe 22, not only the entire length of the existing pipe 2 but also the existing pipe 2 and the elastic water blocking tubular portion 17 are straddled as in the arrangement example shown as another example of the first example. Can be arranged at some positions.

  After the lining pipe 22 is arranged on the inner circumferences of the existing pipe 2 and the steel pipe 27, the invert of the front surface of the existing pipe 2 that has been excised prior to the excision of the distal end portion of the existing pipe 2 as in the first example. The cut portion of the concrete 12 is filled with the filler 24, and the step of the lining pipe 22 and the inverted concrete 12 is filled with the filler 25 and leveled. In this way, the process of implementing the seismic retrofitting method for the existing pipe manhole connection is completed.

  In the drawing, the seismicization of the existing pipe manhole connection 6 is shown in the drawing as a process of making the existing pipe manhole connection 6 on the left side of the figure, but the existing pipe manhole on the right side of the figure is shown. The connection portion 6 is also made earthquake resistant in the same process as described above.

  According to the seismic retrofitting method for the existing pipe manhole connection part of the eighth example, the function and effect are the same as those of the sixth example described above, so the explanation of the sixth example is used. Since the cylindrical auxiliary member 14 provided with the elastic water-stop tubular portion 17 is liquid-tightly fixed to the human hole 3, the cylindrical auxiliary member 14 provided with the elastic water-stop tubular portion 17 is prepared in advance at a factory or the like. Therefore, it is possible to reduce the number of on-site work processes, so that work is easy and work time can be shortened.

It is a longitudinal cross-sectional view which shows the state before construction in the process of the 1st example of implementation of the earthquake resistance construction method of the existing pipe manhole connection part which concerns on this invention. In the step of the first example of the implementation of the seismic retrofitting method for the existing pipe manhole connection portion according to the present invention, the tip portion of the existing pipe fitted to the pipe hole on the peripheral wall of the manhole is cut to form an annular cut portion It is a longitudinal cross-sectional view which shows the state which carried out. It is a longitudinal cross-sectional view which shows the other example of the state which excised the front-end | tip part of the existing pipe | tube fitted to the pipe hole of the surrounding wall of a human hole in the process of the 1st example, and formed the cyclic | annular cut part. It is a longitudinal cross-sectional view which shows the state which fixes a cylindrical auxiliary member to the cyclic | annular cutting part which the existing pipe cut out in the pipe hole of the surrounding wall of a human hole at the process of a 1st example. It is a longitudinal cross-sectional view which shows the state which fixed the cylindrical auxiliary member to the cyclic | annular cutting part which the existing pipe cut out in the pipe hole of the surrounding wall of a human hole at the process of the 1st example. It is a longitudinal cross-sectional view which shows the state which provided the elastic water stop tubular part in the inner periphery of the cylindrical auxiliary member at the process of the 1st example. It is an expanded sectional view showing other examples of an elastic water stop tubular part at the process of the 1st example. It is an expanded sectional view showing other examples of an elastic water stop tubular part at the process of the 1st example. It is an expanded sectional view showing other examples of an elastic water stop tubular part at the process of the 1st example. It is an expanded sectional view which shows the escape prevention means provided between the cylindrical auxiliary member and the elastic water-stop tubular part in the process of the first example. It is a longitudinal cross-sectional view which shows the state which has arrange | positioned the lining pipe | tube in the inner periphery of the existing pipe | tube and the elastic water stop tubular part in the process of the 1st example. It is a longitudinal cross-sectional view which shows the other example of a lining pipe | tube in the process of a 1st example. In the process of the second example of the implementation of the seismic retrofitting method of the existing pipe manhole connection portion according to the present invention, the annular cut-out portion of the existing tube in the hole of the peripheral wall of the manhole is cut into the elastic water-stop tubular portion on the inner periphery It is a longitudinal cross-sectional view which shows the state which fixes the cylindrical auxiliary member which provided. In the process of 2nd example, it is a longitudinal cross-sectional view which shows the state which fixed the cylindrical auxiliary member which provided the elastic water-stop tubular part in the inner periphery to the annular cut part which excised the existing pipe in the pipe hole of the surrounding wall of a human hole. is there. It is a longitudinal cross-sectional view which shows the state which provided the cylindrical temporary frame in the inner periphery of the cylindrical auxiliary member fixed to the cyclic | annular cutting part which the existing pipe cut out in the pipe hole of the surrounding wall of a human hole at the process of the 3rd example. It is a longitudinal cross-sectional view which shows the state which has arrange | positioned the lining pipe | tube in the inner periphery of an existing pipe | tube and a cylindrical temporary frame at the process of the 3rd example. It is a longitudinal cross-sectional view which shows the state which removed the cylindrical temporary frame after arrange | positioning a lining pipe | tube in the inner periphery of an existing pipe and a cylindrical temporary frame at the process of the 3rd example. It is a longitudinal cross-sectional view which shows the state which provided the elastic water stop tubular part in the space | gap which removed the cylindrical temporary frame from the cylindrical auxiliary member at the process of the 3rd example. The inner circumference of the cylindrical auxiliary member fixed to the annular excision part of the existing pipe in the pipe hole of the peripheral wall of the human hole in the step of the fourth example of the implementation of the earthquake resistance construction method for the existing pipe human hole connection part according to the present invention It is a longitudinal cross-sectional view which shows the state which provided the elastic water stop tubular part in. It is a longitudinal cross-sectional view which shows the state which fitted the steel pipe in the elastic water stop tubular part provided in the inner periphery of the cylindrical auxiliary member at the process of the 4th example. It is a longitudinal cross-sectional view which shows the state which has arrange | positioned the lining pipe | tube in the inner periphery of an existing pipe | tube and a steel pipe at the process of the 4th example. In the process of the fifth example of the implementation of the seismic retrofitting method of the existing pipe manhole connection part according to the present invention, an elastic water stop pipe in which a steel pipe is fitted to the annular cut part of the existing pipe in the pipe hole of the peripheral wall of the human hole It is a longitudinal cross-sectional view which shows the state which fixes the cylindrical auxiliary member which provided the shape part in the inner periphery. In the process of the fifth example, a state in which a cylindrical auxiliary member provided with an elastic water-stop tubular portion fitted with a steel pipe on the inner periphery is fixed to an annular cut portion obtained by cutting an existing tube in a tube hole of a peripheral wall of a human hole. It is a longitudinal cross-sectional view shown. In the sixth example of the implementation of the seismic retrofitting method for the existing pipe manhole connection portion according to the present invention, the elasticity in the cylindrical auxiliary member fixed to the annular excision portion of the existing pipe in the hole of the peripheral wall of the manhole It is a longitudinal cross-sectional view which shows the state which fits the edge part of a steel pipe in the existing pipe | tube after a front end part excision through the inner periphery of a water stop tubular part. It is a longitudinal cross-sectional view which shows the state which has arrange | positioned the lining pipe | tube in the inner periphery of an existing pipe | tube and a steel pipe at the process of the 6th example. The inner circumference of the cylindrical auxiliary member fixed to the annular excision part of the existing pipe in the pipe hole of the peripheral wall of the human hole in the step of the seventh example of the implementation of the seismic retrofitting method for the existing pipe human hole connection part according to the present invention It is a longitudinal cross-sectional view which shows the state which fitted the edge part of the steel pipe in the existing pipe | tube after cutting through the front-end | tip part. It is a longitudinal cross-sectional view which shows the state which provided the elastic water stop tubular part between the steel pipe and the cylindrical auxiliary member at the process of the 7th example. In the step of the eighth example of the implementation of the seismic retrofitting method for the existing pipe manhole connection portion according to the present invention, the end portion of the steel pipe is fitted into the existing pipe after the tip portion is cut through the hole in the peripheral wall of the manhole. And a longitudinal sectional view showing a state in which the cylindrical auxiliary member provided with the elastic water-stop tubular portion is fixed between the steel tube and the annular cut portion obtained by cutting the tip portion of the existing tube in the hole of the peripheral wall of the human hole. is there. In the process of the eighth example, the end of the steel pipe is fitted into the existing pipe after cutting the tip through the hole in the peripheral wall of the human hole, and the tip of the existing pipe in the pipe of the peripheral wall of the steel pipe and the human hole It is a longitudinal cross-sectional view which shows the state which fixed the cylindrical auxiliary member which provided the elastic water stop tubular part between the cyclic | annular excision parts which excised.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Ground 2 Existing pipe 2a Tip part 2b End part 3 Human hole 4 Circumferential wall 4a Foundation peripheral wall part 4b Molding peripheral wall part 5 Pipe hole 6 Existing pipe human hole connection part 7 Opening part 8 Lid 9 Inner peripheral wall surface 10 Outer peripheral wall surface 11 Circular cut part DESCRIPTION OF SYMBOLS 12 Invert concrete 13 Cut 14 Cylindrical auxiliary member 15 Head 16 Fitting part 17 Elastic water stop tubular part 17a Concave part 17b Convex part 18 Joint material 19 Pullout prevention means 20 Annular groove 21 Annular convex part 22 Lining pipe 23 Cylindrical lining material 23a Sheet-like lining material 24, 25 Filler 26 Cylindrical temporary frame 27 Steel pipe

Claims (13)

A seismic construction method for an existing pipe human hole connection part that aims to make the existing pipe human hole connection part quake-resistant by fitting the existing pipe to the pipe hole of the peripheral wall of the human hole,
The tip portion of the existing pipe fitted into the tube hole of the peripheral wall of the human hole is within a range not exceeding the outer peripheral wall surface in the vicinity of the outer peripheral wall surface of the peripheral wall from the inner peripheral wall surface side of the peripheral wall of the human hole. Cut to the position, and the inner wall of the tube hole of the human hole located around the tip portion to be cut of the existing pipe is cut in an annular manner along the existing pipe coaxially with the existing pipe to form an annular cut portion And a process of
A head that abuts against the inner peripheral wall surface of the human hole, and a fitting portion that has an outer diameter that is the same as or slightly smaller than the inner diameter of the annular cut portion, and that can be fitted into the annular cut portion. The tubular auxiliary member configured to have an inner diameter that is the same as or larger than the outer diameter of the existing pipe in the axial direction of the fitting portion is fitted into the annular cut portion and the head Contacting the inner peripheral wall surface of the human hole with the portion, and fixing the cylindrical auxiliary member to the human hole in a liquid-tight manner;
An elastically deformable elastic water-stop tubular portion having an outer diameter that is substantially the same as the inner diameter of the cylindrical auxiliary member and an inner diameter that is substantially the same as the inner diameter of the existing pipe is liquid-tight on the inner periphery of the cylindrical auxiliary member. A step of providing
And a step of disposing a lining pipe on the inner circumference of the existing pipe and the elastic water-stop tubular portion. A seismic construction method for an existing pipe human hole connection part that aims to make the existing pipe human hole connection part quake-resistant by fitting the existing pipe to the pipe hole of the peripheral wall of the human hole,
The tip portion of the existing pipe fitted into the tube hole of the peripheral wall of the human hole is within a range not exceeding the outer peripheral wall surface in the vicinity of the outer peripheral wall surface of the peripheral wall from the inner peripheral wall surface side of the peripheral wall of the human hole. Cut to the position, and the inner wall of the tube hole of the human hole located around the tip portion to be cut of the existing pipe is cut in an annular manner along the existing pipe coaxially with the existing pipe to form an annular cut portion And a process of
A head that abuts against the inner peripheral wall surface of the human hole, and a fitting portion that has an outer diameter that is the same as or slightly smaller than the inner diameter of the annular cut portion, and that can be fitted into the annular cut portion. The inner diameter of the cylindrical auxiliary member configured to have an inner diameter that is the same as or larger than the outer diameter of the existing pipe in the axial direction of the fitting portion, is approximately the same diameter as the inner diameter of the cylindrical auxiliary member A liquid-tightly elastically deformable elastic water-stop tubular portion having an inner diameter that is substantially the same as the inner diameter of the existing pipe,
The fitting portion of the cylindrical auxiliary member is fitted into the annular cut portion, the head is brought into contact with the inner peripheral wall surface of the human hole, and the cylindrical auxiliary member is liquid-tightly fixed to the human hole. And a process of
And a step of disposing a lining pipe on the inner circumference of the existing pipe and the elastic water-stop tubular portion. A seismic construction method for an existing pipe human hole connection part that aims to make the existing pipe human hole connection part quake-resistant by fitting the existing pipe to the pipe hole of the peripheral wall of the human hole,
The tip portion of the existing pipe fitted into the tube hole of the peripheral wall of the human hole is within a range not exceeding the outer peripheral wall surface in the vicinity of the outer peripheral wall surface of the peripheral wall from the inner peripheral wall surface side of the peripheral wall of the human hole. Cut to the position, and the inner wall of the tube hole of the human hole located around the tip portion to be cut of the existing pipe is cut in an annular manner along the existing pipe coaxially with the existing pipe to form an annular cut portion And a process of
A head that abuts against the inner peripheral wall surface of the human hole, and a fitting portion that has an outer diameter that is the same as or slightly smaller than the inner diameter of the annular cut portion, and that can be fitted into the annular cut portion. The tubular auxiliary member configured to have an inner diameter that is the same as or larger than the outer diameter of the existing pipe in the axial direction of the fitting portion is fitted into the annular cut portion and the head Contacting the inner peripheral wall surface of the human hole with the portion, and fixing the cylindrical auxiliary member to the human hole in a liquid-tight manner;
Providing a cylindrical temporary frame having an outer diameter that is substantially the same as the inner diameter of the cylindrical auxiliary member and an inner diameter that is substantially the same as the inner diameter of the existing pipe on the inner periphery of the cylindrical auxiliary member;
A step of arranging a lining pipe on the inner circumference of the existing pipe and the cylindrical temporary frame;
A step of removing the cylindrical temporary frame provided in the cylindrical auxiliary member after arranging the lining pipe on the inner circumference of the existing pipe and the cylindrical temporary frame;
And a step of providing an elastically deformable elastic water-stop tubular portion in a liquid-tight manner in a space obtained by removing the cylindrical temporary frame from the cylindrical auxiliary member. . A seismic construction method for an existing pipe human hole connection part that aims to make the existing pipe human hole connection part quake-resistant by fitting the existing pipe to the pipe hole of the peripheral wall of the human hole,
The tip portion of the existing pipe fitted into the tube hole of the peripheral wall of the human hole is within a range not exceeding the outer peripheral wall surface in the vicinity of the outer peripheral wall surface of the peripheral wall from the inner peripheral wall surface side of the peripheral wall of the human hole. Cut to the position, and the inner wall of the tube hole of the human hole located around the tip portion to be cut of the existing pipe is cut in an annular manner along the existing pipe coaxially with the existing pipe to form an annular cut portion And a process of
A head that abuts against the inner peripheral wall surface of the human hole, and a fitting portion that has an outer diameter that is the same as or slightly smaller than the inner diameter of the annular cut portion, and that can be fitted into the annular cut portion. The tubular auxiliary member configured to have an inner diameter that is the same as or larger than the outer diameter of the existing pipe in the axial direction of the fitting portion is fitted into the annular cut portion and the head Contacting the inner peripheral wall surface of the human hole with the portion, and fixing the cylindrical auxiliary member to the human hole in a liquid-tight manner;
An elastically deformable elastic water-stop tubular portion having an outer diameter that is substantially the same as the inner diameter of the cylindrical auxiliary member and an inner diameter that is substantially the same as the inner diameter of the existing pipe is liquid-tight on the inner periphery of the cylindrical auxiliary member. A step of providing
A step of liquid-tightly fitting a steel pipe having an inner diameter substantially the same as the inner diameter of the existing pipe in the elastic water-stop tubular portion;
And a step of disposing a lining pipe on the inner periphery of the existing pipe and the steel pipe. A seismic construction method for an existing pipe human hole connection part that aims to make the existing pipe human hole connection part quake-resistant by fitting the existing pipe to the pipe hole of the peripheral wall of the human hole,
The tip portion of the existing pipe fitted into the tube hole of the peripheral wall of the human hole is within a range not exceeding the outer peripheral wall surface in the vicinity of the outer peripheral wall surface of the peripheral wall from the inner peripheral wall surface side of the peripheral wall of the human hole. Cut to the position, and the inner wall of the tube hole of the human hole located around the tip portion to be cut of the existing pipe is cut in an annular manner along the existing pipe coaxially with the existing pipe to form an annular cut portion And a process of
A head that abuts against the inner peripheral wall surface of the human hole, and a fitting portion that has an outer diameter that is the same as or slightly smaller than the inner diameter of the annular cut portion, and that can be fitted into the annular cut portion. The inner diameter of the cylindrical auxiliary member configured to have an inner diameter that is the same as or larger than the outer diameter of the existing pipe in the axial direction of the fitting portion, is approximately the same diameter as the inner diameter of the cylindrical auxiliary member An elastically deformable elastic water-stop tubular portion having an inner diameter that is substantially the same as the inner diameter of the existing pipe is provided in a liquid-tight manner, and the elastic water-stop tubular portion has a diameter that is substantially the same as the inner diameter of the existing pipe. Fitting a steel pipe having an inner diameter in a liquid-tight manner;
The fitting portion of the cylindrical auxiliary member is fitted into the annular cut portion, the head is brought into contact with the inner peripheral wall surface of the human hole, and the cylindrical auxiliary member is liquid-tightly fixed to the human hole. And a process of
And a step of disposing a lining pipe on the inner periphery of the existing pipe and the steel pipe. A seismic construction method for an existing pipe human hole connection part that aims to make the existing pipe human hole connection part quake-resistant by fitting the existing pipe to the pipe hole of the peripheral wall of the human hole,
The tip portion of the existing pipe fitted into the tube hole of the peripheral wall of the human hole is within a range not exceeding the outer peripheral wall surface in the vicinity of the outer peripheral wall surface of the peripheral wall from the inner peripheral wall surface side of the peripheral wall of the human hole. Cut to the position, and the inner wall of the tube hole of the human hole located around the tip portion to be cut of the existing pipe is cut in an annular manner along the existing pipe coaxially with the existing pipe to form an annular cut portion And a process of
A head that abuts against the inner peripheral wall surface of the human hole, and a fitting portion that has an outer diameter that is the same as or slightly smaller than the inner diameter of the annular cut portion, and that can be fitted into the annular cut portion. The tubular auxiliary member configured to have an inner diameter that is the same as or larger than the outer diameter of the existing pipe in the axial direction of the fitting portion is fitted into the annular cut portion and the head Contacting the inner peripheral wall surface of the human hole with the portion, and fixing the cylindrical auxiliary member to the human hole in a liquid-tight manner;
An elastically deformable elastic water-stop tubular portion having an outer diameter that is substantially the same as the inner diameter of the cylindrical auxiliary member and an inner diameter that is substantially the same as the inner diameter of the existing pipe is liquid-tight on the inner periphery of the cylindrical auxiliary member. A step of providing
A step of fitting a tip portion of a steel pipe into an existing pipe after excision of the tip portion through an inner circumference of the elastic water-stop tubular portion so as to be at least liquid-tight with the elastic water-stop tubular portion;
And a step of disposing a lining pipe on the inner periphery of the existing pipe and the steel pipe. A seismic construction method for an existing pipe human hole connection part that aims to make the existing pipe human hole connection part quake-resistant by fitting the existing pipe to the pipe hole of the peripheral wall of the human hole,
The tip portion of the existing pipe fitted into the tube hole of the peripheral wall of the human hole is within a range not exceeding the outer peripheral wall surface in the vicinity of the outer peripheral wall surface of the peripheral wall from the inner peripheral wall surface side of the peripheral wall of the human hole. Cut to the position, and the inner wall of the tube hole of the human hole located around the tip portion to be cut of the existing pipe is cut in an annular manner along the existing pipe coaxially with the existing pipe to form an annular cut portion And a process of
A head that abuts against the inner peripheral wall surface of the human hole, and a fitting portion that has an outer diameter that is the same as or slightly smaller than the inner diameter of the annular cut portion, and that can be fitted into the annular cut portion. The inner diameter of the cylindrical auxiliary member configured to have an inner diameter that is the same as or larger than the outer diameter of the existing pipe in the axial direction of the fitting portion, is approximately the same diameter as the inner diameter of the cylindrical auxiliary member A liquid-tightly elastically deformable elastic water-stop tubular portion having an inner diameter that is substantially the same as the inner diameter of the existing pipe,
The fitting portion of the cylindrical auxiliary member is fitted into the annular cut portion, the head is brought into contact with the inner peripheral wall surface of the human hole, and the cylindrical auxiliary member is liquid-tightly fixed to the human hole. And a process of
A step of fitting a tip portion of a steel pipe into an existing pipe after excision of the tip portion through an inner circumference of the elastic water-stop tubular portion so as to be at least liquid-tight with the elastic water-stop tubular portion;
And a step of disposing a lining pipe on the inner periphery of the existing pipe and the steel pipe. A seismic construction method for an existing pipe human hole connection part that aims to make the existing pipe human hole connection part quake-resistant by fitting the existing pipe to the pipe hole of the peripheral wall of the human hole,
The tip portion of the existing pipe fitted into the tube hole of the peripheral wall of the human hole is within a range not exceeding the outer peripheral wall surface in the vicinity of the outer peripheral wall surface of the peripheral wall from the inner peripheral wall surface side of the peripheral wall of the human hole. Cut to the position, and the inner wall of the tube hole of the human hole located around the tip portion to be cut of the existing pipe is cut in an annular manner along the existing pipe coaxially with the existing pipe to form an annular cut portion And a process of
A head that abuts against the inner peripheral wall surface of the human hole, and a fitting portion that has an outer diameter that is the same as or slightly smaller than the inner diameter of the annular cut portion, and that can be fitted into the annular cut portion. The tubular auxiliary member configured to have an inner diameter that is the same as or larger than the outer diameter of the existing pipe in the axial direction of the fitting portion is fitted into the annular cut portion and the head Contacting the inner peripheral wall surface of the human hole with the portion, and fixing the cylindrical auxiliary member to the human hole in a liquid-tight manner;
Fitting the tip portion of the steel pipe into the existing pipe after cutting the tip portion through the tube hole in the peripheral wall of the manhole;
Between the steel pipe and the cylindrical auxiliary member, a process of providing an elastically deformable elastic water-stop tubular portion in a liquid-tight manner;
And a step of disposing a lining pipe on the inner periphery of the existing pipe and the steel pipe. A seismic construction method for an existing pipe human hole connection part that aims to make the existing pipe human hole connection part quake-resistant by fitting the existing pipe to the pipe hole of the peripheral wall of the human hole,
The tip portion of the existing pipe fitted into the tube hole of the peripheral wall of the human hole is within a range not exceeding the outer peripheral wall surface in the vicinity of the outer peripheral wall surface of the peripheral wall from the inner peripheral wall surface side of the peripheral wall of the human hole. Cut to the position, and the inner wall of the tube hole of the human hole located around the tip portion to be cut of the existing pipe is cut in an annular manner along the existing pipe coaxially with the existing pipe to form an annular cut portion And a process of
Fitting the tip portion of the steel pipe into the existing pipe after cutting the tip portion through the tube hole in the peripheral wall of the manhole;
A head that abuts against the inner peripheral wall surface of the human hole, and a fitting portion that has an outer diameter that is the same as or slightly smaller than the inner diameter of the annular cut portion, and that can be fitted into the annular cut portion. The inner diameter of the cylindrical auxiliary member configured to have an inner diameter that is the same as or larger than the outer diameter of the existing pipe in the axial direction of the fitting portion, is approximately the same diameter as the inner diameter of the cylindrical auxiliary member Liquid-tightly providing an elastically deformable elastic water-stop tubular portion having the same outer diameter as the inner diameter of the existing pipe or an inner diameter slightly larger than the inner diameter;
The fitting portion of the cylindrical auxiliary member is fitted into the annular cut portion so that an elastic water-stop tubular portion provided on the inner circumference of the cylindrical auxiliary member is fitted to the outer circumference of the steel pipe. Contacting the inner peripheral wall surface of the human hole, and fixing the cylindrical auxiliary member liquid-tightly to the human hole;
And a step of disposing a lining pipe on the inner periphery of the existing pipe and the steel pipe.   The existing pipe person according to any one of claims 1 to 9, further comprising a step of forming a cut at a tip end portion of the existing pipe after the end portion is cut from an inner peripheral side to an outer peripheral surface. Seismic construction method for hole connections.   In the head of the cylindrical auxiliary member, the axial length is set based on the amount of advancement and retraction of the existing pipe in the hole of the peripheral wall of the human hole assumed when there is an earthquake. The earthquake resistance construction method of the existing pipe manhole connection part in any one of Claims 1 thru | or 10 characterized by the above-mentioned.     The head of the cylindrical auxiliary member is formed in a substantially conical shape or a pyramid shape so that the outer diameter gradually decreases toward the open end. A seismic retrofitting method for the existing pipe manhole connection part.     Between the head of the cylindrical auxiliary member and the elastically deformable provided on the inner periphery of the cylindrical auxiliary member, there is a slip-out preventing means for preventing the elastic water-stop tubular portion from slipping out of the head. The earthquake resistance construction method of the existing pipe manhole connection part in any one of Claims 1 thru | or 12 characterized by the above-mentioned.

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