JP2010248806A - Aseismatic construction method for existing pipe manhole connection part - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an aseismatic construction method for existing pipe manhole connection part, which can attain imparting of earthquake-resistance and reduction in time and effort of operation without damaging buried structures such as an underground cable and a buried pipe for various fluids present near the circumferential wall of a manhole and without affecting the strength of the manhole. <P>SOLUTION: The aseismatic construction method for existing pipe manhole connection part for making an existing pipe manhole connection part 6 in which an existing pipe 2 is fitted in a pipe hole 5 of the circumferential wall 4 of a manhole 3 earthquake-resistant includes steps of: annularly cutting off the existing pipe 2 fitted to the pipe hole 5 of the circumferential wall 4 of the manhole 3 in a position within a predetermined range which does not exceed an inner circumferential wall surface 10 and an outer circumferential wall surface 11 of the circumferential wall 4 of the manhole 3 to form an annular cut-off part 12 within the pipe hole 5 of the circumferential wall 4 of the manhole 3; providing an elastically deformable elastic water-stop annular part 13 within the annular cut-off part 12 formed within the pipe hole 5 of the circumferential wall 4 of the manhole 3 so as to be liquid tight with the annular cutout part 12; and disposing a lining pipe 14 inside the existing pipe 2 and the elastic water stop annular part 13 so as to extend over the elastic water-stop annular part 13. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

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 the manhole which became a rigid joint 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 the seismic retrofitting method for the existing pipe manhole connection part, the edge cut between the existing pipe and the manhole peripheral wall by the cutter pushes the cutter until it penetrates the manhole peripheral wall and protrudes out of the peripheral wall. An annular gap is largely opened around the existing pipe on the outer peripheral wall surface of the peripheral wall of the hole, and earth and sand or water outside the peripheral wall of the human hole flows into the annular gap, so that the elastic water blocking material into the annular gap It may be difficult to fill, and work may be hindered.

  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. .

  Also, when cutting the peripheral wall of the human hole around the existing pipe for cutting off the edge of the existing pipe and the peripheral wall of the human hole, the invert concrete at the front of the end of the existing pipe is cut, and In addition, since it is necessary to place a new invert concrete after filling the annular gap between the existing pipe and the peripheral wall of the manhole with an elastic water-resistant material that can be elastically deformed, it takes time and effort to complete the work. There is such a problem.

  The object of the present invention is that there is no risk of damaging buried objects such as underground cables and various fluid buried pipes around the peripheral wall of the human hole, and also affects the strength of the human hole. The object of the present invention is to provide a seismic retrofitting method for an existing pipe manhole connection part which can achieve seismic resistance and workability and shorten work time.

  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. A predetermined range that does not exceed the inner peripheral wall surface and the outer peripheral wall surface of the peripheral wall of the human hole in the existing pipe that is fitted in the pipe hole of the peripheral wall of the human hole. Forming an annular cut portion in the tube hole of the peripheral wall of the human hole, and elastically deformable in the annular cut portion formed in the tube hole of the peripheral wall of the human hole Including a step of liquid-tightly providing a water-stop annular portion with an annular cut-out portion, and a step of disposing a lining pipe across the elastic water-stop annular portion inside the existing pipe and the elastic water-stop annular portion. It is characterized by that.

  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. And, the part of the predetermined range which does not exceed the inner peripheral wall surface and the outer peripheral wall surface of the peripheral wall of the human hole of the existing pipe fitted into the pipe hole of the peripheral wall of the human hole is cut out in an annular shape. A step of forming an annular cutout in the tube hole of the peripheral wall of the human hole; and an annular cutout portion that is elastically deformable in the annular cutout formed in the tube hole of the peripheral wall of the human hole. And a steel pipe that is liquid-tight between the elastic water stop annular portion and the elastic water stop annular portion inside the existing pipe and the elastic water stop annular portion. A step of fitting, and a step of arranging a lining pipe inside the existing pipe and the steel pipe.

  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. And, the part of the predetermined range which does not exceed the inner peripheral wall surface and the outer peripheral wall surface of the peripheral wall of the human hole of the existing pipe fitted into the pipe hole of the peripheral wall of the human hole is cut out in an annular shape. A step of forming an annular cut portion in the tube hole of the peripheral wall of the human hole, a step of fitting a steel pipe across the annular cut portion inside the existing pipe, and the tube hole of the peripheral wall of the human hole A step of providing an elastically deformable elastic water-stop ring portion in an annular cut portion formed therein in a liquid-tight manner between the ring cut portion and the steel pipe, and a step of arranging a lining pipe inside the existing pipe and the steel pipe. It is characterized by including.

  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 human hole is formed by circularly cutting a part of the existing pipe fitted into the pipe hole of the peripheral wall of the human hole so as not to exceed an inner peripheral wall surface and an outer peripheral wall surface of the peripheral wall of the human hole. Forming an annular cut-out portion in the tube hole of the peripheral wall, and opening the annular cut-out portion formed on the inner wall of the tube hole of the peripheral wall of the human hole by cutting out a part of the existing pipe in the inner wall Forming a circular groove that communicates with the annular cut portion by cutting the formed portion into a ring shape along the annular cut portion, the annular cut portion formed in the tube hole of the peripheral wall of the human hole, and A step of liquid-tightly providing an elastic water-stop annular portion that can be elastically deformed in the annular groove between the annular cut portion and the annular groove; Serial inside the existing pipe and the resilient waterproofing annular portion, characterized in that it comprises placing a lining pipe across the elastic waterproofing annulus.

  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 human hole is formed by circularly cutting a part of the existing pipe fitted into the pipe hole of the peripheral wall of the human hole so as not to exceed an inner peripheral wall surface and an outer peripheral wall surface of the peripheral wall of the human hole. Forming an annular cut-out portion in the tube hole of the peripheral wall, and opening the annular cut-out portion formed on the inner wall of the tube hole of the peripheral wall of the human hole by cutting out a part of the existing pipe in the inner wall Forming a circular groove that communicates with the annular cut portion by cutting the formed portion into a ring shape along the annular cut portion, the annular cut portion formed in the tube hole of the peripheral wall of the human hole, and A step of liquid-tightly providing an elastic water-stop annular portion that can be elastically deformed in the annular groove between the annular cut portion and the annular groove; A step of fitting a steel pipe that is liquid-tight between the elastic water stop annular portion and the elastic water stop annular portion inside the existing pipe and the elastic water stop annular portion, and the existing pipe and The method includes a step of arranging a lining pipe inside the steel pipe.

  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 human hole is formed by circularly cutting a part of the existing pipe fitted into the pipe hole of the peripheral wall of the human hole so as not to exceed an inner peripheral wall surface and an outer peripheral wall surface of the peripheral wall of the human hole. Forming an annular cut-out portion in the tube hole of the peripheral wall, and opening the annular cut-out portion formed on the inner wall of the tube hole of the peripheral wall of the human hole by cutting out a part of the existing pipe in the inner wall Forming a circular groove that communicates with the annular excision portion by annularly excising the formed portion along the annular excision portion, and fitting a steel pipe across the annular excision portion inside the existing pipe And an elastic waterstop that is elastically deformable in an annular cutout and an annular groove formed in the tube hole in the peripheral wall of the human hole Circumcision portion Jo portion, characterized in that it comprises a step of providing a liquid-tight between the annular groove and the steel pipe, placing a lining pipe inside the existing pipe and the steel pipe.

  According to the earthquake resistance construction method of the existing pipe human hole connecting portion according to claim 1, the inner peripheral wall surface of the peripheral wall of the human hole of the existing pipe fitted into the pipe hole of the peripheral wall of the human hole, Since the portion of the predetermined range that does not exceed the outer peripheral wall surface is cut in an annular shape, the cutter does not protrude outside the peripheral wall of the manhole, and therefore 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 the earth and sand outside the peripheral wall of the human hole from flowing into the tube hole of the peripheral wall of the human hole from between the outer peripheral wall surface and the surrounding of the existing pipe, and also prevent the inflow of water. The work can be easily performed, and the cutter can damage the underground cables and the buried pipes such as various fluid buried pipes that are close to the outer periphery of the peripheral wall of the human hole. There is no risk of attaching. In addition, it is not necessary to cut the invert concrete on the front face of the end of the existing pipe in the operation of cutting the predetermined range of the existing pipe in an annular shape, thereby reducing work efficiency and work time. Can do.

  Further, an elastic water-stop ring portion that can be elastically deformed is provided in an annular cut portion formed in the tube hole of the peripheral wall of the human hole, and the existing pipe and the elastic water stop ring are provided between the ring cut portion. Since the lining pipe is arranged inside the section across the elastic water-stop ring portion, the lining pipe serves as an existing pipe, and when an earthquake occurs, the existing lining pipe is formed by the lining pipe generated by the earthquake. By absorbing the difference in movement between the pipe and the peripheral wall of the manhole, the elastic water-stop ring portion can prevent the existing pipe manhole connection from being damaged by earthquake motion. Due to the difference in movement with the peripheral wall of the hole, even if there is a break in the end of the existing pipe fitted in the pipe hole, it can be sufficiently compensated with the lining pipe, and there is no possibility of impairing the function as the existing pipe.

  According to the seismic retrofit method of the existing pipe human hole connecting portion according to claim 2, the inner peripheral wall surface of the peripheral wall of the human hole of the existing pipe fitted into the pipe hole of the peripheral wall of the human hole; Since the portion of the predetermined range that does not exceed the outer peripheral wall surface is cut in an annular shape, the cutter does not protrude outside the peripheral wall of the manhole, and therefore 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 the earth and sand outside the peripheral wall of the human hole from flowing into the tube hole of the peripheral wall of the human hole from between the outer peripheral wall surface and the surrounding of the existing pipe, and also prevent the inflow of water. The work can be easily performed, and the cutter can damage the underground cables and the buried pipes such as various fluid buried pipes that are close to the outer periphery of the peripheral wall of the human hole. There is no risk of attaching. In addition, it is not necessary to cut the invert concrete on the front face of the end of the existing pipe in the operation of cutting the predetermined range of the existing pipe in an annular shape, thereby reducing work efficiency and work time. Can do.

  Further, an elastic water-stop ring portion that can be elastically deformed is provided in an annular cut portion formed in the tube hole of the peripheral wall of the human hole, and the existing pipe and the elastic water stop ring are provided between the ring cut portion. Since the steel pipe that is liquid-tight between the elastic water stop annular part and the elastic water stop annular part is fitted inside the part, and the lining pipe is disposed inside the existing pipe and the steel pipe The steel pipe and the lining pipe serve as existing pipes, and when an earthquake occurs, the difference in motion between the existing pipe composed of steel pipes and lining pipes caused by the earthquake and the peripheral wall of the manhole is elastically stopped. Absorption of the water ring part can prevent the existing pipe manhole connection part from being destroyed by the earthquake motion, and the difference between the movement of the existing pipe and the peripheral wall of the manhole caused by the earthquake Even if there is a break at the end of the existing pipe that is fitted, the steel pipe Can be compensated sufficiently by lining pipe, there is no possibility of impairing the function of the existing pipe.

  According to the seismic retrofit method of the existing pipe human hole connecting portion according to claim 3, the inner peripheral wall surface of the peripheral wall of the human hole of the existing pipe fitted into the pipe hole of the peripheral wall of the human hole; Since the portion of the predetermined range that does not exceed the outer peripheral wall surface is cut in an annular shape, the cutter does not protrude outside the peripheral wall of the manhole, and therefore 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 the earth and sand outside the peripheral wall of the human hole from flowing into the tube hole of the peripheral wall of the human hole from between the outer peripheral wall surface and the surrounding of the existing pipe, and also prevent the inflow of water. The work can be easily performed, and the cutter can damage the underground cables and the buried pipes such as various fluid buried pipes that are close to the outer periphery of the peripheral wall of the human hole. There is no risk of attaching. In addition, it is not necessary to cut the invert concrete on the front face of the end of the existing pipe in the operation of cutting the predetermined range of the existing pipe in an annular shape, thereby reducing work efficiency and work time. Can do.

  Further, a steel pipe is fitted inside the existing pipe so as to straddle the annular cut portion, and an elastic water-stop ring portion that can be elastically deformed is annularly formed in the annular cut portion formed in the tube hole of the peripheral wall of the human hole. Since the elastic water-stop ring portion is formed in-situ by injecting an elastic water-stopping material into the mold, the steel pipe is formed of the elastic water-stop ring portion. It also serves as a molding mold and eliminates the need to prepare a mold for molding the elastic water-stop ring portion.

  In addition, since the lining pipe is arranged inside the existing pipe and the steel pipe, the steel pipe and the lining pipe serve as existing pipes, and when an earthquake occurs, the steel pipe and the lining pipe are generated by the earthquake. The elastic water-stop ring part absorbs the difference in movement between the existing pipe and the peripheral wall of the manhole, so that the existing pipe manhole connection can be prevented from being damaged by earthquake motion. Due to the difference in movement with the peripheral wall of the human hole, even if there is a break at the end of the existing pipe fitted in the pipe hole, the steel pipe and the lining pipe can be sufficiently supplemented, and the function as the existing pipe is impaired. There is no fear.

  According to the seismic retrofit method of the existing pipe human hole connecting portion according to claim 4, the inner peripheral wall surface of the peripheral wall of the human hole of the existing pipe fitted into the pipe hole of the peripheral wall of the human hole A part of a range not exceeding the outer peripheral wall surface is annularly cut to form an annular cut portion in the tube hole of the peripheral wall of the human hole, and the existing pipe on the inner wall is formed on the inner wall of the peripheral hole of the human hole. The part opened to the annular cut part formed by cutting a part of the ring is cut along the annular cut part to form an annular groove communicating with the annular cut part. It does not protrude outside the peripheral wall of the human hole, and therefore, the space between the outer peripheral wall surface of the peripheral wall of the human hole and the periphery of the existing pipe is in a closed state. It is possible to prevent the earth and sand outside the peripheral wall of the human hole from flowing into the pipe hole of the peripheral wall and also prevent the inflow of water. Can be kept to a minimum, and work can be performed easily, and buried objects such as underground cables and buried pipes for various fluids that exist in the vicinity of the outer periphery of the peripheral wall of the human hole by a cutter There is no risk of scratching. Further, in the operation of cutting the predetermined range portion of the existing pipe in an annular shape and the operation of forming an annular groove in the inner wall of the pipe hole of the peripheral wall of the human hole, the invert concrete on the front surface of the end portion of the existing pipe is cut off. There is no need, and this makes it possible to shorten the workability and work time of the construction.

  Further, an elastic water-stop ring portion that can be elastically deformed in the annular cut portion and the annular groove formed in the tube hole of the peripheral wall of the human hole is provided in a liquid-tight manner between the annular cut portion and the annular groove, Since the lining pipe is disposed inside the existing pipe and the elastic water stop annular portion so as to straddle the elastic water stop annular portion, the lining pipe serves as an existing pipe, and when an earthquake occurs, The difference in movement between the existing pipe formed by the lining pipe and the peripheral wall of the human hole is absorbed by the elastic water stop annular part, but the elastic water stop annular part is formed in the pipe hole of the peripheral wall of the human hole. Since the annular cutout portion and the annular groove communicating with the annular cutout portion are provided, the thickness of the elastic waterstop annular portion can be increased, and the amount of deformation of the elastic waterstop annular portion is also large. Effectively absorbs the difference in movement between the wall and the peripheral wall of the human hole Rukoto can, it is possible to prevent the existing pipe manhole connection portion is destroyed by the earthquake motion. Also, due to the difference in movement between the existing pipe and the peripheral wall of the human hole due to the earthquake, even if there is a break at the end of the existing pipe fitted in the pipe hole, the lining pipe can sufficiently compensate, There is no risk of impairing the functions of

  According to the earthquake resistance construction method for an existing pipe human hole connecting portion according to claim 5, the inner peripheral wall surface of the peripheral wall of the human hole of the existing pipe fitted into the pipe hole of the peripheral wall of the human hole; A part of a range not exceeding the outer peripheral wall surface is annularly cut to form an annular cut portion in the tube hole of the peripheral wall of the human hole, and the existing pipe on the inner wall is formed on the inner wall of the peripheral hole of the human hole. The part opened to the annular cut part formed by cutting a part of the ring is cut along the annular cut part to form an annular groove communicating with the annular cut part. It does not protrude outside the peripheral wall of the human hole, and therefore, the space between the outer peripheral wall surface of the peripheral wall of the human hole and the periphery of the existing pipe is in a closed state. It is possible to prevent the earth and sand outside the peripheral wall of the human hole from flowing into the pipe hole of the peripheral wall and also prevent the inflow of water. Can be kept to a minimum, and work can be performed easily, and buried objects such as underground cables and buried pipes for various fluids that exist in the vicinity of the outer periphery of the peripheral wall of the human hole by a cutter There is no risk of scratching. Further, in the operation of cutting the predetermined range portion of the existing pipe in an annular shape and the operation of forming an annular groove in the inner wall of the pipe hole of the peripheral wall of the human hole, the invert concrete on the front surface of the end portion of the existing pipe is cut off. There is no need, and this makes it possible to shorten the workability and work time of the construction.

  Further, an elastic water-stop ring portion that can be elastically deformed in the annular cut portion and the annular groove formed in the tube hole of the peripheral wall of the human hole is provided in a liquid-tight manner between the annular cut portion and the annular groove, A steel pipe that straddles the elastic water stop annular part and is liquid-tight with the elastic water stop annular part is fitted inside the existing pipe and the elastic water stop annular part, and the existing pipe and the steel pipe are fitted. Since the lining pipe is arranged inside the steel pipe, the steel pipe and the lining pipe serve as existing pipes, and when an earthquake occurs, the existing pipe and the peripheral wall of the manhole formed of the steel pipe and the lining pipe generated by the earthquake The elastic water stop annular portion absorbs the difference in motion with the elastic water stop annular portion, and the elastic water stop annular portion is provided in the annular cutout portion formed in the tube hole of the peripheral wall of the human hole and in the annular groove communicating with the annular cutout portion. Therefore, the thickness of the elastic water stop ring part can be increased, and the elastic water stop Since the amount of deformation of the shaped part is large, the difference in movement between the existing pipe composed of the lining pipe and the peripheral wall of the manhole can be absorbed effectively, and the existing pipe manhole connection part is destroyed by the earthquake motion Can be prevented. Also, due to the difference in movement between the existing pipe and the peripheral wall of the human hole due to the earthquake, even if there is a break at the end of the existing pipe fitted in the pipe hole, it can be sufficiently supplemented with the steel pipe and the lining pipe, There is no risk of impairing the function of existing pipes.

  According to the seismic improvement method for the existing pipe human hole connecting portion according to claim 6, the inner peripheral wall surface of the peripheral wall of the human hole of the existing pipe fitted into the pipe hole of the peripheral wall of the human hole, A part of a range not exceeding the outer peripheral wall surface is annularly cut to form an annular cut portion in the tube hole of the peripheral wall of the human hole, and the existing pipe on the inner wall is formed on the inner wall of the peripheral hole of the human hole. The part opened to the annular cut part formed by cutting a part of the ring is cut along the annular cut part to form an annular groove communicating with the annular cut part. It does not protrude outside the peripheral wall of the human hole, and therefore, the space between the outer peripheral wall surface of the peripheral wall of the human hole and the periphery of the existing pipe is in a closed state. It is possible to prevent the earth and sand outside the peripheral wall of the human hole from flowing into the pipe hole of the peripheral wall and also prevent the inflow of water. Can be kept to a minimum, and work can be performed easily, and buried objects such as underground cables and buried pipes for various fluids that exist in the vicinity of the outer periphery of the peripheral wall of the human hole by a cutter There is no risk of scratching. Further, in the operation of cutting the predetermined range portion of the existing pipe in an annular shape and the operation of forming an annular groove in the inner wall of the pipe hole of the peripheral wall of the human hole, the invert concrete on the front surface of the end portion of the existing pipe is cut off. There is no need, and this makes it possible to shorten the workability and work time of the construction.

  Further, an elastic water stop that fits a steel pipe inside the existing pipe and straddles the annular cut part, and is elastically deformable in an annular cut part and an annular groove formed in the pipe hole of the peripheral wall of the human hole. Since the annular portion is provided in a liquid-tight manner between the annular cut portion, the annular groove, and the steel pipe, when the elastic water-stop annular portion is provided by being formed on-site by injecting an elastic water-stopping material into the mold, the steel pipe This also serves as a mold for forming the elastic water-stop ring portion, and it is not necessary to prepare a mold for forming the elastic water-stop ring portion.

  Further, since the lining pipe is arranged inside the existing pipe and the steel pipe, the steel pipe and the lining pipe serve as existing pipes, and when an earthquake occurs, the steel pipe and the lining pipe generated by the earthquake are constituted. The elastic water stop annular part absorbs the difference in movement between the existing pipe and the peripheral wall of the human hole, and the elastic water stop annular part is formed in the annular cut part formed in the pipe hole of the peripheral wall of the human hole and the same. Since it is provided in an annular groove that communicates with the pipe, the thickness of the elastic water stop ring portion can be increased, and the amount of deformation of the elastic water stop ring portion is large. Thus, it is possible to effectively absorb the difference in the movement of the existing pipe and prevent the existing pipe-hole connection portion from being destroyed by the earthquake motion. Also, due to the difference in movement between the existing pipe and the peripheral wall of the human hole due to the earthquake, even if there is a break at the end of the existing pipe fitted in the pipe hole, it can be sufficiently supplemented with the steel pipe and the lining pipe, There is no risk of impairing the function of existing pipes.

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. A longitudinal section showing a state in which a part of an existing pipe that is fitted into a pipe hole in a peripheral wall of a human hole is cut out in an annular shape in the process of the first example of the implementation of the seismic retrofitting method for an existing pipe human hole connection part according to the present invention FIG. It is a longitudinal cross-sectional view which shows the state which provided the elastic water stop annular part in the annular cut part formed in the tube 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 has arrange | positioned the lining pipe | tube inside the existing pipe | tube and the elastic water stop annular 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. A longitudinal section showing a state in which a part of an existing pipe fitted into a pipe hole on a peripheral wall of a human hole is cut out in an annular shape in the process of the second example of the implementation of the seismic retrofitting method for the existing pipe human hole connection part according to the present invention FIG. It is a longitudinal cross-sectional view which shows the state which provided the elastic water stop annular part in the annular cut part formed in the tube hole of the surrounding wall of a human hole at the process of a 2nd example. It is a longitudinal cross-sectional view which shows the state which fitted the steel pipe liquid-tightly inside the existing pipe and the elastic water stop annular part in the process of the 2nd example. It is a longitudinal cross-sectional view which shows the state which has arrange | positioned the lining pipe inside the existing pipe and the steel pipe at the process of the 2nd example. In the third example of the implementation of the seismic retrofitting method for the existing pipe manhole connection portion according to the present invention, a longitudinal section showing a state in which a part of the existing pipe fitted into the pipe hole of the peripheral wall of the manhole is cut out in an annular shape FIG. It is a longitudinal cross-sectional view which shows the state which fitted the steel pipe across the annular cutting part inside the existing pipe at the process of the 3rd example. It is a longitudinal cross-sectional view which shows the state which provided the elastic water stop annular part liquid-tightly in the annular cutting part in the process of the 3rd example. It is a longitudinal cross-sectional view which shows the state which has arrange | positioned the lining pipe inside the existing pipe and the steel pipe at the process of the 3rd example. In the process of the fourth example of the implementation of the seismic retrofitting method for the existing pipe manhole connection part according to the present invention, a part of the existing pipe fitted into the pipe hole on the peripheral wall of the human hole is cut to form an annular cut part And it is a longitudinal cross-sectional view which shows the state which cut off the part open | released by the cyclic | annular excision part in the inner wall of the tube hole of the surrounding wall of a human hole, and formed the annular groove connected with an cyclic | annular excision part. It is a longitudinal cross-sectional view which shows the state which provided the elastic water stop annular part liquid-tightly in the process of the 4th example in the annular cutting part and the annular groove. It is a longitudinal cross-sectional view which shows the state which has arrange | positioned the lining pipe | tube inside the existing pipe | tube and the elastic water stop annular part in the process of the 4th example. In the step of the fifth example of the implementation of the seismic retrofitting method for the existing pipe human hole connection part according to the present invention, a part of the existing pipe fitted into the pipe hole on the peripheral wall of the human hole is cut to form an annular cut part. And it is a longitudinal cross-sectional view which shows the state which cut off the part open | released by the cyclic | annular excision part in the inner wall of the tube hole of the surrounding wall of a human hole, and formed the annular groove connected with an cyclic | annular excision part. It is a longitudinal cross-sectional view which shows the state which provided the elastic water-stop ring part in the annular cutting part and annular groove formed in the pipe hole of the surrounding wall of a human hole at the process of the 5th example liquid-tightly. It is a longitudinal cross-sectional view which shows the state which fitted the steel pipe liquid-tightly inside the existing pipe and the elastic water stop annular part in the process of the 5th example. It is a longitudinal cross-sectional view which shows the state which has arrange | positioned the lining pipe inside the existing pipe and the steel pipe at the process of the 5th example. In the step of the sixth example of the implementation of the seismic retrofitting method for the existing pipe human hole connection part according to the present invention, a part of the existing pipe fitted to the pipe hole on the peripheral wall of the human hole is cut to form an annular cut part. And it is a longitudinal cross-sectional view which shows the state which cut off the part open | released by the cyclic | annular excision part in the inner wall of the tube hole of the surrounding wall of a human hole, and formed the annular groove connected with an cyclic | annular excision part. It is a longitudinal cross-sectional view which shows the state which fitted the steel pipe across the annular cutting part inside the existing pipe at the process of the 6th example. It is a longitudinal cross-sectional view which shows the state which provided the elastic water stop annular part liquid-tightly in the annular cutting part and the elastic water stop annular part in the process of the 6th example. It is a longitudinal cross-sectional view which shows the state which has arrange | positioned the lining pipe inside the existing pipe and the steel pipe at the process of the 6th example.

  Hereinafter, the form for implementing the earthquake resistance construction method of the existing pipe manhole connection part which concerns on this invention is demonstrated in detail with reference to the Example shown on drawing.

  FIG. 1 to FIG. 5 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 a part of an existing pipe fitted into a pipe hole in the peripheral wall is cut into an annular shape, and FIG. 3 shows an elastic water blocking annular part in the annular cut part formed in the pipe hole in the peripheral wall of the human hole. 4 is a longitudinal sectional view showing a state in which the lining pipe is disposed inside the existing pipe and the elastic water stop annular portion, and FIG. 5 is a longitudinal sectional view showing another example of the lining pipe. is there.

  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. Invert concrete 9 is placed at the bottom of the human hole 3.

  As shown in FIG. 2, first, the seismic improvement method of the present example performed on 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 of the human hole 3. In the existing pipe 2, a portion in a predetermined range not exceeding the inner peripheral wall surface 10 and the outer peripheral wall surface 11 of the peripheral wall 4 of the human hole 3 is cut out in an annular shape, and the inside of the pipe hole 5 of the basic peripheral wall portion 4 a of the human hole 3 An annular cut-out portion 12 is formed.

  The fact that the inner peripheral wall surface 10 and the outer peripheral wall surface 11 of the foundation peripheral wall portion 4a of the human hole 3 do not exceed the front end side and the rear end side of the annular cutout portion 12 is that of the inner peripheral wall surface 10 and the outer peripheral wall surface 11 of the basic peripheral wall portion 4a. Although it is located inside and is preferably 3 cm or more inside from the inner peripheral wall surface 10 and the outer peripheral wall surface 11, it is not particularly limited. Further, the predetermined range is the movement of the existing pipe 2 and the peripheral wall 4 of the human hole 3 caused by an earthquake when an elastic water stop ring portion described later is provided in the ring cut portion 12 formed by cutting this range. This is a range in which the length that can absorb the difference between the existing pipe 2 and the basic peripheral wall portion 4a of the human hole 3 is absorbed by the elastic water-stop ring portion. However, it is not particularly limited as long as possible.

  The cutting of the end portion of the existing pipe 2 is not particularly limited, but in this example, a disk-shaped cutter is used, and this cutter is inserted into the existing pipe 2 so that the hole 5 in the peripheral wall 4 of the human hole 3 is obtained. In the existing pipe 2 that is fitted to the above, the front end side and the rear end side of the predetermined range not exceeding the inner peripheral wall surface 10 and the outer peripheral wall surface 11 of the peripheral wall 4 of the human hole 3 are cut, and the cut existing pipe The portion of 2 is removed from the tube hole 5 by cutting.

  Next, as shown in FIG. 3, an elastic water-stop ring portion 13 that can be elastically deformed in an annular cutout portion 12 formed in the tube hole 5 of the basic peripheral wall portion 4 a of the human hole 3 is interposed between the annular cutout portion 12. Provide liquid-tight.

  The elastic water stop ring portion 13 is molded using an elastic water stop material such as a water expansion material or a synthetic 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 ring portion 13 in the ring cut portion 12, the elastic water stop material within the ring cut portion 12 has a width substantially the same as that of the ring cut portion 12 and a thickness substantially equal to the thickness of the existing pipe 2. The elastic water stop annular portion 13 may be formed by being attached to the ring in a ring shape, or may be provided with an elastic water stop material having substantially the same width as the annular cut portion 12 and a thickness substantially equal to the thickness of the existing pipe 2. The elastic water stop annular portion 13 may be formed and the elastic water stop annular portion 13 may be inserted into the annular cutout portion 12. In this example, the elastic water stop annular portion 13 is provided so as to be slightly wider than the annular cut portion 12 and slightly thicker in the inner diameter direction than the thickness of the existing pipe 2 and press-fitted into the annular cut portion 12.

  In addition, the elastic water stop annular portion 13 provided by being inserted into the annular cutout portion 12 is between the elastic water stop annular portion 13 and the inner wall of the tube hole 5 and the outer peripheral surface of the elastic water stop annular portion 13 and a lining pipe described later. What is necessary is just to stop water between.

  In this example, the elastic water-stop annular portion 13 is adhered in a liquid-tight manner with an adhesive to the inner wall surface of the tube hole 5 and the rear end surface of the existing tube 2a remaining on the inner wall surface 10 side of the tube hole 5. 5 is not bonded to the distal end surface of the existing pipe 2b on the outer peripheral wall surface 11 side. Further, the elastic water stop annular portion 13 is liquid-tight by pressure contact with a lining pipe described later, and is not bonded between the two.

  Next, as shown in FIG. 4, the lining pipe 14 is disposed on the inner side of the existing pipe 2 and the elastic water stop annular portion 13 across the elastic water stop annular portion 13.

  In the case of the lining pipe 14, in this example, the cylindrical lining material 15 in a curable soft state is inserted inside the existing pipe 2 and the elastic water stop ring portion 13, and the existing pipe 2 and the elastic water stop ring portion are inserted. A lining pipe 14 is formed and disposed by pressing and hardening the peripheral wall surface of the cylindrical lining material 15 against the inner wall 13.

  In the method of inserting the tubular lining material 15 inside the existing pipe 2 and the elastic water stop annular portion 13 and forming and arranging the lining pipe 14 on the inner wall of the existing pipe 2 and the elastic water stop annular portion 13, Known techniques are used.

  For example, a flexible tubular lining material 15 impregnated or coated with an uncured curable resin is used for existing pipes using techniques disclosed in Japanese Patent Publication No. 7-4853 and Japanese Patent Application Laid-Open No. 2005-90581. 2 and the elastic water-stop annular portion 13 are inserted inside, and the lining resin 14 is cured by pressing the peripheral wall surface of the cylindrical lining material 15 against the inner walls of the existing pipe 2 and the elastic water-stop annular portion 13 to cure the curable resin. Can be formed and arranged. The cylindrical lining material 15 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 15 molded from a thermoplastic resin is replaced with the existing pipe 2 and the elastic stopper. The lining pipe 14 is inserted into the water annular portion 13 and is heated and softened by pressurizing and expanding the tubular lining material 15 against the inner wall of the existing pipe 2 and the elastic water-stop annular portion 13. It may be formed and arranged.

  When the cylindrical lining material 15 is inserted into the existing pipe 2 and the elastic water blocking annular portion 13, 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 pipe 14 made of a cylindrical lining material 15 inside the water stop annular portion 13.

  As another example of the lining pipe 14, as shown in FIG. 5, 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 15a is wound around the repair machine, the repair machine is inserted into the existing pipe 2 and the elastic water stop ring portion 13, and is positioned so as to straddle the existing pipe 2 and the elastic water stop ring portion 13. It is possible to form and arrange the lining pipe 14 by expanding the sheet-like lining material 15a by air pressure and pressing the sheet-like lining material 15a against the inner wall of the existing pipe 2 and the elastic water stop annular portion 13 to cure the curable resin. it can.

  Although not shown, other examples of forming the lining pipe 14 and disposing it inside the existing pipe 2 and the elastic water-stop ringing portion 13 are disclosed in, for example, Japanese Patent Publication No. 4-44153 and Japanese Patent Application Laid-Open No. 2003-191329. The belt-shaped members are sequentially folded in the circumferential direction, and the side ends of the belt-shaped members are joined to each other to form a spirally wound lining tube 14, while the lining tube 14 is connected to the existing tube 2 and the elastic waterstop. You may make it arrange | position by sending in the inside of the annular part 13. FIG.

  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 human hole connecting portion, the inner peripheral wall surface 10 and the outer peripheral wall surface 11 of the basic peripheral wall portion 4a of the human hole 3 of the existing pipe 2 fitted into the pipe hole 5 are not exceeded. Since the portion of the predetermined range is cut out in an annular shape, the cutter does not protrude out of the basic peripheral wall portion 4a, so that the space between the outer peripheral wall surface 11 of the basic peripheral wall portion 4a and the existing pipe 2 is closed. Yes, it is possible to prevent the earth and sand outside the foundation peripheral wall portion 4a from flowing between the outer peripheral wall surface 11 and the periphery of the existing pipe 2 into the tube hole 5 and to prevent or minimize the inflow of water. Therefore, the work can be easily performed, and there is no risk of damaging embedded objects such as underground cables and various underground pipes existing in the vicinity of the outer periphery of the basic peripheral wall 4a by the cutter. . In addition, in the operation of cutting the predetermined range of the existing pipe 2 in a ring shape, it is not necessary to cut the invert concrete 9 on the front face of the end of the existing pipe 2, thereby reducing work efficiency and work time. I can plan.

  Further, an elastic water-stop ring portion 13 that is elastically deformable is provided in an annular cut portion 12 formed in the tube hole 5 in a liquid-tight manner between the ring cut portion 12 and the existing pipe 2 and the elastic water stop ring portion 13. Since the lining pipe 14 is disposed on the inner side across the elastic water stop annular portion 13, the lining pipe 14 serves as the existing pipe 2, and when an earthquake occurs, the lining pipe 14 is formed by the lining pipe 14 generated by the earthquake. The elastic water-stop ring portion 13 absorbs the difference in motion between the existing pipe 2 and the peripheral wall 4 of the human hole 3, thereby preventing the existing pipe human hole connecting portion 6 from being destroyed by earthquake motion. Even if the end of the existing pipe 2b fitted in the pipe hole 5 is broken due to the difference in movement between the existing pipe 2 and the peripheral wall 4 of the human hole 3 due to the earthquake, the lining pipe 14 can sufficiently compensate the damage. And there is no risk of impairing the function of the existing pipe 2.

  In this example, the elastic water-stop annular portion 13 is adhered in a liquid-tight manner with an adhesive to the inner wall surface of the tube hole 5 and the rear end surface of the existing tube 2a remaining on the inner wall surface 10 side of the tube hole 5. 5 is not bonded to the distal end surface of the existing pipe 2b on the outer peripheral wall surface 11 side, so that when the existing pipe 2 is moved out of the tube hole 5 (in the outer peripheral wall surface 11 side of the tube hole 5), Even if the end surface of the existing pipe 2b that is fitted in the tube hole 5 is broken, the distal end surface of the pipe 2a is separated from the elastic water-stop annular portion 13 and is not accompanied by the elastic water-stop annular portion 13. Since the existing pipe 2a remaining on the inner peripheral wall surface 10 side of the hole 5 and the elastic water stop annular portion 13 are not affected by this, water stop between the inner wall of the pipe hole 5 and the lining pipe 14 is further ensured. Can be maintained.

  6 to 9 show a second example in which the seismic retrofitting method for an existing pipe manhole connection portion according to the present invention is carried out, and FIG. 6 shows an existing pipe fitted in a hole in the peripheral wall of the manhole. FIG. 7 is a longitudinal sectional view showing a state in which a part of the ring is cut into an annular shape, FIG. 7 is a longitudinal sectional view showing a state in which an elastic water-stopping annular portion is provided in the annular cut portion formed in the tube hole of the peripheral wall of the human hole, FIG. 9 is a longitudinal sectional view showing a state in which a steel pipe is liquid-tightly fitted inside the existing pipe and the elastic water stop annular portion, and FIG. 9 is a longitudinal sectional view showing a state in which the lining pipe is arranged inside the existing pipe and the steel pipe.

  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. 6, first, the seismic retrofit method for the existing pipe human hole connecting portion 6 having the structure shown in FIG. 1 is fitted into the pipe hole 5 of the basic peripheral wall portion 4a of the human hole 3. In the existing pipe 2, a portion in a predetermined range not exceeding the inner peripheral wall surface 10 and the outer peripheral wall surface 11 of the peripheral wall 4 of the human hole 3 is cut into an annular shape, and the pipe hole 5 of the basic peripheral wall portion 4 a of the human hole 3. An annular cutout 12 is formed therein.

  Next, as shown in FIG. 7, an elastic water-stop ring portion 13 that can be elastically deformed in an annular cutout portion 12 formed in the tube hole 5 of the basic peripheral wall portion 4 a of the human hole 3 is formed between the annular cutout portion 12. Provide liquid-tight.

  Since the above process is the same as that of the above-mentioned 1st example, the description of a 1st example is used and detailed description of this process is abbreviate | omitted.

  In this example, as will be described later, the steel pipe is liquid-tightly fitted inside the elastic water-stop ring portion 13, but the elastic water-stop ring portion 13 may be bonded to the outer peripheral surface of the steel pipe, You may press-contact with an outer peripheral surface.

  Next, as shown in FIG. 8, the steel pipe 16 is formed inside the existing pipe 2 and the elastic water stop annular portion 13 so as to straddle the elastic water stop annular portion 13 and be liquid-tight with the elastic water stop annular portion 13. To fit. The steel pipe 16 is preferably made of stainless steel. In this example, the outer diameter of the steel pipe 16 is formed to be the same as the inner diameter of the existing pipe 2. As described above, the steel pipe 16 and the elastic water-stop ring portion 13 may be bonded or press-contacted. In this example, the steel pipe 16 and the elastic water stop annular portion 13 are in pressure contact. In addition, between the steel pipe 16 and the existing pipe 2, it is preferable that the steel pipe 16 and the existing pipe 2a are bonded in a liquid-tight manner with an adhesive, and the steel pipe 16 and the existing pipe 2a are not bonded. In this example, the steel pipe 16 and the existing pipe 2a are bonded, and the steel pipe 16 and the existing pipe 2a are not bonded.

  Next, as shown in FIG. 9, the lining pipe 14 is disposed inside the existing pipe 2 and the steel pipe 16. Since this process is also 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 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 connecting portion, the inner peripheral wall surface 10 of the basic peripheral wall portion 4a of the manhole 3 of the existing pipe 2 fitted in the pipe hole 5 is the same as in the first example. Therefore, the cutter does not protrude outside the base peripheral wall portion 4a, so that the outer peripheral wall surface 11 of the base peripheral wall portion 4a and the circumference of the existing pipe 2 are not cut. The space between the outer peripheral wall 11 and the periphery of the existing pipe 2 can be prevented from flowing in the earth and sand outside the foundation peripheral wall portion 4a into the pipe hole 5 and from the water. It can be or can be minimized, and the work can be easily performed, and buried objects such as underground cables and various fluid buried pipes which are present in the vicinity of the outer periphery of the basic peripheral wall 4a by a cutter. There is no risk of scratching. In addition, in the operation of cutting the predetermined range of the existing pipe 2 in a ring shape, it is not necessary to cut the invert concrete 9 on the front face of the end of the existing pipe 2, thereby reducing work efficiency and work time. I can plan.

  Further, an elastic water-stop ring portion 13 that is elastically deformable is provided in an annular cut portion 12 formed in the tube hole 5 in a liquid-tight manner between the ring cut portion 12 and the existing pipe 2 and the elastic water stop ring portion 13. Since the steel pipe 16 that crosses the elastic water stop annular portion 13 and is liquid-tight with the elastic water stop annular portion 13 is fitted inside, and the lining pipe 14 is disposed inside the existing pipe 2 and the steel pipe 16. The steel pipe 16 and the lining pipe 14 serve as the existing pipe 2, and when an earthquake occurs, the existing pipe 2 constituted by the steel pipe 16 and the lining pipe 14 generated by the earthquake and the peripheral wall 4 of the manhole 3 It is possible to prevent the existing pipe manhole connection portion 6 from being destroyed by the earthquake motion by absorbing the difference between the movements of the elastic water stop ring portion 13, and the peripheral wall of the existing pipe 2 and the manhole 3 due to the earthquake. 4 is fitted in the tube hole 5 due to the difference in movement from 4 Even if breaking the end of the 2b can be sufficiently compensated by the steel tube 16 and the lining tube 14, there is no possibility of impairing the function of the existing pipe 2.

  FIGS. 10 to 13 show a third example in which the seismic retrofitting method of the existing pipe manhole connection portion according to the present invention is carried out. FIG. 10 shows the existing pipe fitted in the hole of the peripheral wall of the manhole. FIG. 11 is a longitudinal sectional view showing a state in which a steel pipe is fitted across an annular cut portion inside an existing pipe, and FIG. 12 is an elastic water stop in the annular cut portion. FIG. 13 is a longitudinal sectional view showing a state in which the lining pipe is arranged inside the existing pipe and the steel pipe.

  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. 10, first, the seismic retrofit method for the existing pipe human hole connecting portion 6 having the structure shown in FIG. 1 is fitted into the pipe hole 5 of the basic peripheral wall portion 4 a of the human hole 3. In the existing pipe 2, a portion in a predetermined range not exceeding the inner peripheral wall surface 10 and the outer peripheral wall surface 11 of the peripheral wall 4 of the human hole 3 is cut into an annular shape, and the pipe hole 5 of the basic peripheral wall portion 4 a of the human hole 3. An annular cutout 12 is formed therein.

  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.

  Next, as shown in FIG. 11, the steel pipe 16 is fitted inside the existing pipe 2 across the annular cut portion 12. The steel pipe 16 is preferably made of stainless steel as in the first example, and the outer diameter of the steel pipe 16 is formed to be the same as the inner diameter of the existing pipe 2.

  Next, as shown in FIG. 12, an elastic water-stop annular portion 13 that is elastically deformable is provided in the annular cut portion 12 between the annular cut portion 12 and the steel pipe 16 in a liquid-tight manner.

  The elastic water stop ring portion 12 is formed by forming an elastic water stop ring portion 12 by injecting an elastic water stop material made of a soft resin such as silicon resin or soft epoxy urethane into the ring cut portion 12. In this example, the injection of the elastic water blocking material into the annular cut portion 12 is performed as shown in FIG. 11, after the steel pipe 16 is fitted inside the existing pipe 2 and then the inner peripheral wall surface 10 side on the foundation peripheral wall portion 4a. An injection hole 17 communicating with the inside of the annular cut portion 12 is formed, and an elastic water-stopping material is injected from the injection hole 17 into the annular cut portion 12 as shown in FIG. The injection hole 17 is closed with the injected elastic water stop material.

  Next, as shown in FIG. 13, the lining pipe 14 is disposed inside the existing pipe 2 and the steel pipe 16. 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 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 connecting portion, the inner peripheral wall surface 10 of the basic peripheral wall portion 4a of the manhole 3 of the existing pipe 2 fitted in the pipe hole 5 is the same as in the first example. Therefore, the cutter does not protrude outside the base peripheral wall portion 4a, so that the outer peripheral wall surface 11 of the base peripheral wall portion 4a and the circumference of the existing pipe 2 are not cut. The space between the outer peripheral wall 11 and the periphery of the existing pipe 2 can be prevented from flowing in the earth and sand outside the foundation peripheral wall portion 4a into the pipe hole 5 and from the water. It can be or can be minimized, and the work can be easily performed, and buried objects such as underground cables and various fluid buried pipes which are present in the vicinity of the outer periphery of the basic peripheral wall 4a by a cutter. There is no risk of scratching. In addition, in the operation of cutting the predetermined range of the existing pipe 2 in a ring shape, it is not necessary to cut the invert concrete 9 on the front face of the end of the existing pipe 2, thereby reducing work efficiency and work time. I can plan.

  Further, a steel pipe 16 is fitted inside the existing pipe 2 across the annular cut portion 12, and an elastic water-stop annular portion 13 that can be elastically deformed in the annular cut portion 12 is provided between the annular cut portion 12 and the steel pipe 16. Therefore, when the elastic water-stop ring portion 13 is provided by being molded in-situ by injecting an elastic water-stop material into the mold, the steel pipe 16 also serves as the mold frame of the elastic water-stop ring portion 13. Therefore, it is not necessary to prepare a mold for forming the elastic water stop ring portion 13.

  In addition, since the lining pipe 14 is disposed inside the existing pipe 2 and the steel pipe 16, the steel pipe 16 and the lining pipe 14 serve as the existing pipe 2, and when an earthquake occurs, The elastic water stop ring portion 13 absorbs the difference in movement between the existing pipe 2 constituted by the lining pipe 14 and the peripheral wall 4 of the human hole 3 to prevent the existing pipe human hole connection part 6 from being destroyed by the earthquake motion. Even if the end of the existing pipe 2b fitted in the pipe hole 5 is broken due to the difference in movement between the existing pipe 2 and the peripheral wall 4 of the human hole 3 due to the earthquake, the steel pipe 16 The lining pipe 14 can be sufficiently supplemented, and there is no possibility of impairing the function as the existing pipe 2.

  FIGS. 14 to 16 show a fourth example in which the seismic retrofitting method for an existing pipe manhole connection portion according to the present invention is carried out, and FIG. 14 shows an existing pipe fitted in a hole in the peripheral wall of the manhole. A state where an annular cut portion is formed by cutting a part of the tube and an annular groove communicating with the annular cut portion is formed on the inner wall of the tube hole of the peripheral wall of the human hole by cutting a portion opened to the annular cut portion is shown. FIG. 15 is a longitudinal sectional view showing a state in which an elastic water-stop ring portion is liquid-tightly provided in an annular cut portion and an annular groove, and FIG. 16 shows a lining pipe inside the existing pipe and the elastic water stop ring portion. It is a longitudinal cross-sectional view which shows the state arrange | positioned.

  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. 14, first, the seismic retrofit method for the existing pipe human hole connecting portion 6 having the structure shown in FIG. 1 is fitted into the pipe hole 5 of the basic peripheral wall portion 4 a of the human hole 3. In the existing pipe 2, a portion in a predetermined range not exceeding the inner peripheral wall surface 10 and the outer peripheral wall surface 11 of the peripheral wall 4 of the human hole 3 is cut into an annular shape, and the pipe hole 5 of the basic peripheral wall portion 4 a of the human hole 3. An annular cutout 12 is formed therein.

  Further, a portion of the inner peripheral wall 4a of the basic peripheral wall 4a of the human hole 3 that is open to the annular cutout portion 12 formed by cutting off a part of the existing pipe 2 is formed along the annular cutout portion 12. An annular groove 18 communicating with the annular excision 12 is formed by excision to a predetermined depth.

  Since the process of forming the annular cutout 12 is the same as the first example described above, the description of the first example is cited and detailed description thereof is omitted. Further, in the step of forming the annular groove 18, in this example, it is performed continuously with the step of forming the annular cut portion 12, and the above-mentioned inner wall of the tube hole 5 is formed by the same means as the cutting of the existing tube 2. The part open | released by the cyclic | annular cutting part 12 formed by excising a part of the existing pipe | tube 2 cut off is cut off.

  Next, as shown in FIG. 15, an annular cut portion 12 formed in the tube hole 5 of the basic peripheral wall portion 4 a of the human hole 3 and an elastic water stop annular portion 13 that can be elastically deformed in the annular groove 18 are formed into the annular cut portion. 12 and the annular groove 18 are provided in a liquid-tight manner.

  As in the first example, the elastic water-stop ring portion 13 is formed using an elastic water-stop material such as a water-expandable rubber material 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 ring portion 13 in the ring cut portion 12, the elastic water stop material has the same width as the ring cut portion 12 and the ring groove 18 in the ring cut portion 12 and the ring groove 18. The elastic water-stopping annular portion 13 is formed by being affixed in a ring shape to a depth substantially equal to the depth of the portion 12 and the annular groove 18, that is, the dimension from the inner surface of the existing pipe 2 to the groove bottom of the annular groove 18. Alternatively, an elastic water-stopping annular portion 13 having an approximately the same width as the annular cutout portion 12 and the annular groove 18 and a thickness substantially equal to the depth of the annular cutout portion 12 and the annular groove 18 is formed of an elastic waterstop material. The elastic water stop annular portion 13 may be provided by being inserted into the annular cut portion 12 and the annular groove 18. In this example, the elastic water stop annular portion 13 is slightly wider than the annular cutout portion 12 and the annular groove 18 and slightly thicker in the inner diameter direction than the depth of the annular cutout portion 12 and the annular groove 18. It is provided so as to press fit into the groove 18.

  Further, the elastic water-stop annular portion 13 provided by being inserted into the annular cutout portion 12 and the annular groove 18 is formed between the elastic water-stop annular portion 13 and the inner wall of the tube hole 5, that is, the annular groove 18 and the elastic water-stop annular portion. What is necessary is just to stop water between 13 and the outer peripheral surface of the lining pipe mentioned later.

  In this example, the elastic water blocking annular portion 13 is liquid-tight with an adhesive on the inner wall surface of the tube hole 5, that is, the inner surface of the annular groove 18 and the rear end surface of the existing tube 2a remaining on the inner peripheral wall surface 10 side of the tube hole 5. The tip end surface of the existing tube 2b on the outer peripheral wall surface 11 side of the tube hole 5 is not bonded. Further, the elastic water stop annular portion 13 is liquid-tight by pressure contact with a lining pipe described later, and is not bonded between the two.

  Next, as shown in FIG. 16, the lining pipe 14 is disposed inside the existing pipe 2 and the elastic water stop annular portion 13 so as to straddle the elastic water stop annular portion 13. 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 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 human hole connecting portion, the inner peripheral wall surface 10 and the outer peripheral wall surface 11 of the basic peripheral wall portion 4a of the human hole 3 of the existing pipe 2 fitted into the pipe hole 5 are not exceeded. A portion within a predetermined range is cut out in an annular shape, and the portion of the inner wall that is open to the annular cutting portion 12 is cut out in an annular shape on the inner wall of the tube hole 5, so that the cutter protrudes outside the base peripheral wall portion 4a. Therefore, the space between the outer peripheral wall surface 11 of the foundation peripheral wall portion 4a and the periphery of the existing pipe 2 is in a closed state, and the base peripheral wall portion enters between the outer peripheral wall surface 11 and the periphery of the existing pipe 2 into the pipe hole 5. 4a can prevent inflow of earth and sand outside of 4a, can also prevent or minimize the inflow of water, can be easily carried out, and can be easily performed by the cutter. Underground cables and buried pipes for various fluids that are close to the outside There is no risk of damaging the buried object. In addition, in the operation of cutting the predetermined range of the existing pipe 2 in a ring shape, it is not necessary to cut the invert concrete 9 on the front face of the end of the existing pipe 2, thereby reducing work efficiency and work time. I can plan.

  Further, an elastic water stop ring portion 13 that is elastically deformable in the annular cut portion 12 and the annular groove 18 formed in the tube hole 5 is provided in a liquid-tight manner between the annular cut portion 12 and the annular groove 18, and the existing pipe 2 In addition, since the lining pipe 14 is disposed inside the elastic water stop annular portion 13 across the elastic water stop annular portion 13, the lining pipe 14 serves as the existing pipe 2, and when an earthquake occurs, The difference in movement between the existing pipe 2 constituted by the lining pipe 14 caused by the above and the peripheral wall 4 of the human hole 3 is absorbed by the elastic water stop annular portion 13, but the elastic water stop annular portion 13 is formed in the pipe hole 5. Since it is provided in the annular cutout portion 12 and the annular groove 18 communicating with the annular cutout portion 12, the thickness of the elastic water stop annular portion 13 can be increased, and the amount of deformation of the elastic water stop annular portion 13 is also large. Between the existing pipe 2 and the peripheral wall 4 of the human hole 3 The difference of the feeder can be effectively absorbed, existing pipe manhole connecting portion 6 can be prevented from being destroyed by the earthquake motion. In addition, even if the end of the existing pipe 2b fitted in the pipe hole 5 is broken due to a difference in movement between the existing pipe 2 and the peripheral wall 4 of the human hole 3 due to an earthquake, the lining pipe 14 is sufficient to compensate. There is no risk of impairing the function of the existing pipe.

  In this example, the elastic water blocking annular portion 13 is liquid-tight with an adhesive on the inner wall surface of the tube hole 5, that is, the inner surface of the annular groove 18 and the rear end surface of the existing tube 2a remaining on the inner peripheral wall surface 10 side of the tube hole 5. Since the existing pipe 2 is not bonded to the tip end surface of the existing tube 2b on the outer peripheral wall surface 11 side of the tube hole 5, the existing tube 2 is pulled out from the tube hole 5 (the outer wall surface 11 side of the tube hole 5). ), The end surface of the existing pipe 2b is separated from the elastic water-stop ring portion 13 without the elastic water-stop ring portion 13 and fitted in the tube hole 5. The existing pipe 2a and the elastic water stop ring portion 13 remaining on the inner peripheral wall surface 10 side of the pipe hole 5 are not affected even if the pipe 5 is broken, so that the gap between the inner wall of the pipe hole 5 and the lining pipe 14 is not affected. The water stoppage can be maintained more reliably.

  17 to 20 show a fifth example in which the seismic retrofitting method for the existing pipe manhole connection portion according to the present invention is carried out, and FIG. 17 shows the existing pipe fitted into the hole of the peripheral wall of the manhole. A state where an annular cut portion is formed by cutting a part of the tube and an annular groove communicating with the annular cut portion is formed on the inner wall of the tube hole of the peripheral wall of the human hole by cutting a portion opened to the annular cut portion is shown. FIG. 18 is a longitudinal sectional view showing a state in which an elastic cut-off annular portion is liquid-tightly provided in an annular cut portion and an annular groove formed in a tube hole of a peripheral wall of a human hole, and FIG. FIG. 20 is a longitudinal sectional view showing a state in which the steel pipe is liquid-tightly fitted inside the elastic water stop annular portion, and FIG. 20 is a longitudinal sectional view showing a state in which the lining pipe is disposed inside the existing pipe and the steel pipe.

  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. 17, first, the seismic retrofit method for the existing pipe human hole connecting portion 6 having the structure shown in FIG. 1 is fitted into the pipe hole 5 of the basic peripheral wall portion 4a of the human hole 3. In the existing pipe 2, a portion in a predetermined range not exceeding the inner peripheral wall surface 10 and the outer peripheral wall surface 11 of the peripheral wall 4 of the human hole 3 is cut into an annular shape, and the pipe hole 5 of the basic peripheral wall portion 4 a of the human hole 3. An annular cutout 12 is formed therein.

  Further, a portion of the inner peripheral wall 4a of the basic peripheral wall 4a of the human hole 3 that is open to the annular cutout portion 12 formed by cutting off a part of the existing pipe 2 is formed along the annular cutout portion 12. An annular groove 18 communicating with the annular excision 12 is formed by excision to a predetermined depth.

  Next, as shown in FIG. 18, an annular cut portion 12 formed in the tube hole 5 of the basic peripheral wall portion 4a of the human hole 3 and an elastic water-stop ring portion 13 that can be elastically deformed in the annular groove 18 are formed into the annular cut portion. 12 and the annular groove 18 are provided in a liquid-tight manner.

  Since the above process is the same as that of the above-mentioned 4th example, description of a 4th example is used and detailed description of this process is abbreviate | omitted.

  In this example, as will be described later, the steel pipe is liquid-tightly fitted inside the elastic water-stop ring portion 13, but the elastic water-stop ring portion 13 may be bonded to the outer peripheral surface of the steel pipe, You may press-contact with an outer peripheral surface.

  Next, as shown in FIG. 19, the steel pipe 16 is formed inside the existing pipe 2 and the elastic water stop annular portion 13 so as to straddle the elastic water stop annular portion 13 and be liquid-tight with the elastic water stop annular portion 13. Mating. Since this steel pipe 16 is the same as that of the above-mentioned 2nd example, the description of a 4th example is used and the detailed description of this process is abbreviate | omitted.

  Next, as shown in FIG. 20, the lining pipe 14 is disposed inside the existing pipe 2 and the steel pipe 16. Since this process is also 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 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 portion, the inner peripheral wall surface 10 of the basic peripheral wall portion 4a of the manhole 3 of the existing pipe 2 fitted in the pipe hole 5 is the same as in the fourth example. A portion of a predetermined range not exceeding the outer peripheral wall surface 11 is annularly cut, and a portion of the inner wall that is open to the annular cut portion 12 is cut annularly on the inner wall of the tube hole 5. The outer peripheral wall surface 11 of the foundation peripheral wall portion 4a does not protrude outside the portion 4a, and therefore, the space between the outer peripheral wall surface 11 and the existing pipe 2 is closed. It is possible to prevent the earth and sand outside the foundation peripheral wall portion 4a from flowing into the hole 5, and it is possible to prevent or minimize the inflow of water. Underground cables and each existing near the outer periphery of the foundation peripheral wall 4a by a cutter There is no risk of damaging the buried objects, such as fluid buried pipe. In addition, in the operation of cutting the predetermined range of the existing pipe 2 in a ring shape, it is not necessary to cut the invert concrete 9 on the front face of the end of the existing pipe 2, thereby reducing work efficiency and work time. I can plan.

  Further, an elastic water stop ring portion 13 that is elastically deformable in the annular cut portion 12 and the annular groove 18 formed in the tube hole 5 is provided in a liquid-tight manner between the annular cut portion 12 and the annular groove 18, and the existing pipe 2 Further, a steel pipe 16 that is straddling the elastic water stop annular part 13 and that is liquid-tight with the elastic water stop annular part 13 is fitted inside the elastic water stop annular part 13, and the inner side of the existing pipe 2 and the steel pipe 16. Therefore, the steel pipe 16 and the lining pipe 14 serve as the existing pipe 2, and when an earthquake occurs, the existing pipe 2 constituted by the steel pipe 16 and the lining pipe 14 generated by the earthquake The elastic water stop annular portion 13 absorbs the difference in movement of the human hole 3 from the peripheral wall 4, and the elastic water stop annular portion 13 includes the annular cutout portion 12 formed in the tube hole 5 of the peripheral wall 4 of the human hole 3 and this. Because it is provided in the annular groove 18 that communicates with the elastic water stop annular portion 3 is large, and the amount of deformation of the elastic water-stop ring portion 13 is also large, so that the difference in movement between the existing pipe 2 constituted by the lining pipe 14 and the peripheral wall 4 of the human hole 3 is effectively absorbed. It is possible to prevent the existing pipe manhole connection 6 from being destroyed by the earthquake motion. Even if the end of the existing pipe 2b fitted in the pipe hole 5 is broken due to the difference in movement between the existing pipe 2 and the peripheral wall 4 of the human hole 3 due to the earthquake, the steel pipe 16 and the lining pipe 14 There is no fear that the function as the existing pipe 2 may be impaired.

  FIGS. 21 to 24 show a sixth example for carrying out the seismic retrofitting method for the existing pipe manhole connection portion according to the present invention, and FIG. 21 shows the existing pipe fitted in the hole of the peripheral wall of the manhole. A state in which an annular cut portion is formed by cutting a part of the annular hole and an annular groove communicating with the annular cut portion is formed on the inner wall of the tube hole of the peripheral wall of the human hole by cutting away the portion opened to the annular cut portion is shown. FIG. 22 is a longitudinal sectional view showing a state in which a steel pipe is fitted across the annular cut portion inside the existing pipe, and FIG. 23 is a diagram showing how the elastic water stop annular portion is placed in the ring cut portion and the elastic water stop annular portion. FIG. 24 is a longitudinal sectional view showing a state in which the lining pipe is arranged inside the existing pipe and the steel pipe.

  As shown in FIG. 21, first, the seismic retrofit method for the existing pipe human hole connecting portion 6 having the structure shown in FIG. 1 is fitted into the pipe hole 5 of the basic peripheral wall portion 4 a of the human hole 3. In the existing pipe 2, a portion in a predetermined range not exceeding the inner peripheral wall surface 10 and the outer peripheral wall surface 11 of the peripheral wall 4 of the human hole 3 is cut into an annular shape, and the pipe hole 5 of the basic peripheral wall portion 4 a of the human hole 3. An annular cutout 12 is formed therein.

  Further, a portion of the inner peripheral wall 4a of the basic peripheral wall 4a of the human hole 3 that is open to the annular cutout portion 12 formed by cutting off a part of the existing pipe 2 is formed along the annular cutout portion 12. An annular groove 18 communicating with the annular excision 12 is formed by excision to a predetermined depth.

  Since this process is the same as that of the above-mentioned 4th example, the description of a 4th example is used and detailed description of this process is abbreviate | omitted.

  Next, as shown in FIG. 22, the steel pipe 16 is fitted inside the existing pipe 2 across the annular cut portion 12. The steel pipe 16 is preferably made of stainless steel as in the first example, and the outer diameter of the steel pipe 16 is formed to be the same as the inner diameter of the existing pipe 2.

  Next, as shown in FIG. 23, the elastic water-stop annular portion 13 that can be elastically deformed in the annular cut portion 12 and the annular groove 18 is liquid-tight between the annular cut portion 12, the annular groove 18, and the steel pipe 16. Provided.

  The elastic water stop ring portion 12 is elastic by injecting an elastic water stop material made of a soft resin such as silicon resin or soft epoxy urethane into the ring cut portion 12 and the ring groove 18 as in the third example. A water stop ring portion 12 is formed and provided. In the present example, the elastic waterstop material is injected into the annular cut portion 12 in this example, as shown in FIG. 22, after the steel pipe 16 is fitted inside the existing pipe 2, the inner peripheral wall face 10 side is fitted to the foundation peripheral wall 4a. An injection hole 17 communicating with the inside of the annular cut portion 12 is formed, and an elastic water-stopping material is injected from the injection hole 17 into the annular cut portion 12 as shown in FIG. The injection hole 17 is closed with the injected elastic water stop material.

  Next, as shown in FIG. 24, the lining pipe 14 is disposed inside the existing pipe 2 and the steel pipe 16. 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 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 portion, the inner peripheral wall surface 10 of the basic peripheral wall portion 4a of the manhole 3 of the existing pipe 2 fitted in the pipe hole 5 is the same as in the fourth example. A portion of a predetermined range not exceeding the outer peripheral wall surface 11 is annularly cut, and a portion of the inner wall that is open to the annular cut portion 12 is cut annularly on the inner wall of the tube hole 5. The outer peripheral wall surface 11 of the foundation peripheral wall portion 4a does not protrude outside the portion 4a, and therefore, the space between the outer peripheral wall surface 11 and the existing pipe 2 is closed. It is possible to prevent the earth and sand outside the foundation peripheral wall portion 4a from flowing into the hole 5, and it is possible to prevent or minimize the inflow of water. Underground cables and each existing near the outer periphery of the foundation peripheral wall 4a by a cutter There is no risk of damaging the buried objects, such as fluid buried pipe. In addition, in the operation of cutting the predetermined range of the existing pipe 2 in a ring shape, it is not necessary to cut the invert concrete 9 on the front face of the end of the existing pipe 2, thereby reducing work efficiency and work time. I can plan.

  Further, a steel pipe 16 is fitted inside the existing pipe 2 so as to straddle the annular cut portion 12, and an elastic water-stop annular portion 13 that can be elastically deformed in the annular cut portion 12 and the annular groove 18 is formed in the annular cut portion 12 and the annular shape. Since the elastic water-stop ring portion 13 is provided by being molded in-situ by injecting an elastic water-stop material into the mold, it is provided in a liquid-tight manner between the groove 18 and the steel pipe 16. This also serves as a mold for forming the portion 13, and it is not necessary to prepare a mold for forming the elastic water stop ring portion 13.

  Further, since the lining pipe 14 is disposed inside the existing pipe 2 and the steel pipe 16, the steel pipe 16 and the lining pipe 14 serve as the existing pipe 2, and when an earthquake occurs, the steel pipe 16 and the lining generated by the earthquake are generated. The difference in movement between the existing pipe 2 constituted by the pipe 14 and the peripheral wall 4 of the human hole 3 is absorbed by the elastic water-stop ring portion 13, and the elastic water-stop ring portion 13 is the tube hole 5 of the peripheral wall 4 of the human hole 3. Since it is provided in the annular cut portion 12 formed inside and the annular groove 18 communicating with this, the thickness of the elastic water stop annular portion 13 can be increased, and the deformation amount of the elastic water stop annular portion 13 is also large. It is possible to effectively absorb the difference in movement between the existing pipe 2 constituted by the pipe 14 and the peripheral wall 4 of the human hole 3, and to prevent the existing pipe human hole connecting portion 6 from being destroyed by earthquake motion. it can. Even if the end of the existing pipe 2b fitted in the pipe hole 5 is broken due to the difference in movement between the existing pipe 2 and the peripheral wall 4 of the human hole 3 due to the earthquake, the steel pipe 16 and the lining pipe 14 There is no fear that the function as the existing pipe 2 may be impaired.

DESCRIPTION OF SYMBOLS 1 Ground 2 Existing pipe 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 Invert concrete 10 Inner peripheral wall 11 Outer peripheral wall 12 Annular cut part 13 Elastic stop Water annular portion 14 Lining pipe 15 Tubular lining material 15a Sheet lining material 16 Steel pipe 17 Injection hole 18 Annular groove

Claims (6)

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,
A portion of the existing pipe that is fitted into the pipe hole of the peripheral wall of the human hole is cut out in a predetermined range that does not exceed the inner peripheral wall surface and the outer peripheral wall surface of the peripheral wall of the human hole. Forming an annular cutout in the bore of the peripheral wall;
Providing an elastic water-stop ring portion that is elastically deformable in an annular cut portion formed in the tube hole of the peripheral wall of the human hole, in a liquid-tight manner between the annular cut portion;
An earthquake resistance construction method for an existing pipe manhole connection portion, comprising a step of arranging a lining pipe across the elastic water stop annular portion inside the existing pipe and the elastic water stop annular 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,
A portion of the existing pipe that is fitted into the pipe hole of the peripheral wall of the human hole is cut out in a predetermined range that does not exceed the inner peripheral wall surface and the outer peripheral wall surface of the peripheral wall of the human hole. Forming an annular cutout in the bore of the peripheral wall;
Providing an elastic water-stop ring portion that is elastically deformable in an annular cut portion formed in the tube hole of the peripheral wall of the human hole, in a liquid-tight manner between the annular cut portion;
Fitting a steel pipe that crosses the elastic water stop annular portion and is liquid-tight with the elastic water stop annular portion inside the existing pipe and the elastic water stop annular portion;
An earthquake resistant construction method for an existing pipe manhole connection portion including a step of arranging a lining pipe inside 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,
A portion of the existing pipe that is fitted into the pipe hole of the peripheral wall of the human hole is cut out in a predetermined range that does not exceed the inner peripheral wall surface and the outer peripheral wall surface of the peripheral wall of the human hole. Forming an annular cutout in the bore of the peripheral wall;
On the inside of the existing pipe, a step of fitting a steel pipe across the annular cut portion, and
A step of liquid-tightly providing an elastically deformable elastic water stop annular portion between the annular cut portion and the steel pipe in the annular cut portion formed in the tube hole of the peripheral wall of the human hole;
An earthquake resistant construction method for an existing pipe manhole connection portion including a step of arranging a lining pipe inside 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,
A part of the existing pipe that is fitted into the pipe hole of the peripheral wall of the human hole is cut out in a ring shape so as not to exceed the inner peripheral wall surface and the outer peripheral wall surface of the human hole peripheral wall. Forming an annular cutout in the tube hole;
A part of the inner wall of the peripheral wall of the human hole that is open to an annular cut portion formed by cutting away a part of the existing pipe is cut out annularly along the annular cut portion. Forming an annular groove communicating with the annular cut portion;
A step of liquid-tightly providing an elastic water-stop ring portion that is elastically deformable in the annular cutout portion and the annular groove formed in the tube hole of the peripheral wall of the human hole between the annular cutout portion and the annular groove;
An earthquake resistance construction method for an existing pipe manhole connection portion, comprising a step of arranging a lining pipe across the elastic water stop annular portion inside the existing pipe and the elastic water stop annular 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,
A part of the existing pipe that is fitted into the pipe hole of the peripheral wall of the human hole is cut out in a ring shape so as not to exceed the inner peripheral wall surface and the outer peripheral wall surface of the human hole peripheral wall. Forming an annular cutout in the tube hole;
A part of the inner wall of the peripheral wall of the human hole that is open to an annular cut portion formed by cutting away a part of the existing pipe is cut out annularly along the annular cut portion. Forming an annular groove communicating with the annular cut portion;
A step of liquid-tightly providing an elastic water-stop ring portion that is elastically deformable in the annular cutout portion and the annular groove formed in the tube hole of the peripheral wall of the human hole between the annular cutout portion and the annular groove;
Fitting a steel pipe that crosses the elastic water stop annular portion and is liquid-tight with the elastic water stop annular portion inside the existing pipe and the elastic water stop annular portion;
An earthquake resistant construction method for an existing pipe manhole connection portion including a step of arranging a lining pipe inside 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,
A part of the existing pipe that is fitted into the pipe hole of the peripheral wall of the human hole is cut out in a ring shape so as not to exceed the inner peripheral wall surface and the outer peripheral wall surface of the human hole peripheral wall. Forming an annular cutout in the tube hole;
A part of the inner wall of the peripheral wall of the human hole that is open to an annular cut portion formed by cutting away a part of the existing pipe is cut out annularly along the annular cut portion. Forming an annular groove communicating with the annular cut portion;
On the inside of the existing pipe, a step of fitting a steel pipe across the annular cut portion, and
Providing an annular water-removable annular portion elastically deformable in the annular cut portion and the annular groove formed in the tube hole of the peripheral wall of the human hole between the annular cut portion, the annular groove and the steel pipe; and
An earthquake resistant construction method for an existing pipe manhole connection portion including a step of arranging a lining pipe inside the existing pipe and the steel pipe.

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