JP4789156B2 - Seismic retrofitting method for existing pipe manhole connections - Google Patents

Description

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

  Seismic facilities have been severely damaged by major earthquakes that occurred in the past, and the impact on citizens' lives was serious. Among them, damage to existing pipes caused damage, slipping out, slipping, cracking, etc., especially existing pipes were fitted and connected to the hole in the peripheral wall of the human 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 such an earthquake resistant construction method for the existing pipe human hole connection part, the peripheral wall of the human hole in the outer periphery of the existing pipe is cut with a constant width with a tubular cutter, so that the strength of the human hole may be reduced. In particular, there is a problem that it is not suitable for human holes with thin walls. In addition, it is not easy to cut the peripheral wall of the human hole with a cutter in a narrow space in the human hole, and in the edge cutting between the existing pipe and the peripheral wall of the human hole with the cutter, the cutter penetrates the peripheral wall of the human hole and Since it pushes forward until it protrudes outside, the annular gap opens largely around the existing pipe on the outer peripheral wall surface of the peripheral wall of the human hole, and earth and sand or water outside the peripheral wall of the human hole flows into the annular gap, It was difficult to fill the annular gap with the elastic water-stopping material, which could hinder the work.

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

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

  In order to achieve the above-described object, the invention according to claim 1 is to provide an existing pipe for improving the earthquake resistance of an existing pipe human hole connecting portion in which the existing pipe is fitted and connected to a pipe hole of a peripheral wall of the human hole. A method of seismicizing a human hole connecting portion, the step of fixing a cylindrical auxiliary member having the same inner diameter as the pipe hole on the inner peripheral wall of the human hole coaxially with the pipe hole, and a cylindrical auxiliary A step of providing an elastically deformable elastic water-stop tubular portion having a thickness substantially equal to the thickness of the existing pipe on the inner periphery of the member; and a lining pipe disposed on the inner periphery of the existing pipe and the elastic water-stop tubular portion. And a process.

  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. An elastic water-stopping tubular portion having an inner diameter of the same diameter as the tube hole and having a thickness substantially equal to the thickness of the existing tube is provided on the inner periphery of the inner peripheral wall of the human hole. It includes a step of fixing a cylindrical auxiliary member coaxially with the tube hole, and a step of arranging a lining pipe on the inner periphery of the existing pipe and the elastic water-stop tubular portion.

  The invention according to claim 3 is an earthquake resistance construction method for an existing pipe human hole connection part that is intended to make the existing pipe human hole connection part seismically resistant by fitting the existing pipe to the pipe hole of the peripheral wall of the human hole. A step of fixing a cylindrical auxiliary member having an inner diameter of the same diameter as the tube hole on the inner peripheral wall of the human hole coaxially with the tube hole; and A step of providing a cylindrical temporary frame having a thickness substantially equal to the wall thickness; a step of arranging a lining pipe on the inner periphery of the existing pipe and the cylindrical temporary frame; and an inner periphery of the existing pipe and the cylindrical temporary frame. After the lining pipe is disposed in the cylindrical auxiliary member, a step of removing the cylindrical temporary frame provided in the cylindrical auxiliary member, and an elastic stopper capable of elastic deformation in the gap obtained by removing the cylindrical temporary frame from the cylindrical auxiliary member. Providing a water tubular portion.

  According to a fourth aspect of the present invention, in the cylindrical auxiliary member according to the first, second, or third aspect, the axial length of the human hole is assumed when an earthquake occurs. It is set on the basis of the advancing / retreating movement amount of the existing pipe in the pipe hole of the peripheral wall.

  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 step of cutting the end of the existing pipe fitted into the pipe hole of the peripheral wall of the human hole within a range not exceeding the outer peripheral wall surface from the inner peripheral wall surface side of the peripheral wall of the human hole; Fixing a cylindrical auxiliary member having an inner diameter of the same diameter as the tube hole on the inner peripheral wall of the human hole, coaxially with the tube hole, and the inner periphery of the cylindrical auxiliary member and the peripheral wall of the human hole A step of providing an elastically deformable elastic water-stop tubular portion having a thickness substantially equal to the thickness of the existing pipe on an inner wall of a portion of the pipe hole where the existing pipe is cut, and the existing pipe and the elastic water-stop tubular And a step of disposing a lining pipe on the inner periphery of the part.

  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 step of cutting the end of the existing pipe fitted into the pipe hole of the peripheral wall of the human hole within a range not exceeding the outer peripheral wall surface from the inner peripheral wall surface side of the peripheral wall of the human hole; An elastic water-stopping tubular portion having a thickness substantially equal to the thickness of the existing pipe is provided on the inner periphery of the cylindrical auxiliary member having the same inner diameter as the tube hole, and the end surface of the cylindrical auxiliary member The elastic water-stop tubular portion is protruded to a length corresponding to a portion of the peripheral hole of the human hole where the existing pipe is cut off, and the elastic stop protruding from the end surface of the cylindrical auxiliary member. Insert the tubular portion into the portion of the tube hole in the peripheral wall of the human hole where the existing tube has been removed, and place the cylindrical auxiliary member in front. Characterized in that it comprises a step of fixing the pipe hole coaxially with the inner peripheral wall of the manhole, and placing the lining tube on the inner circumference of the existing pipe and the resilient waterproofing tubular portion.

  The invention according to claim 7 is an earthquake resistance construction method for an existing pipe human hole connection part that is intended to make the existing pipe human hole connection part seismically resistant by fitting the existing pipe to the pipe hole of the peripheral wall of the human hole. The step of cutting the end of the existing pipe fitted into the pipe hole of the peripheral wall of the human hole within a range not exceeding the outer peripheral wall surface from the inner peripheral wall surface side of the peripheral wall of the human hole; Fixing a cylindrical auxiliary member having an inner diameter of the same diameter as the tube hole on the inner peripheral wall of the human hole, coaxially with the tube hole, and the inner periphery of the cylindrical auxiliary member and the peripheral wall of the human hole A step of providing a cylindrical temporary frame having a thickness substantially equal to the thickness of the existing pipe on the inner wall of the tube hole where the existing pipe is removed; and a lining on the inner circumference of the existing pipe and the cylindrical temporary frame A step of arranging a pipe, and after arranging a lining pipe on the inner circumference of the existing pipe and the cylindrical temporary frame, the inner circumference of the cylindrical auxiliary member and A step of removing a cylindrical temporary frame provided on an inner wall of a portion of the peripheral wall of the human hole where the existing pipe is removed; an inner periphery of the cylindrical auxiliary member; and the pipe hole of the peripheral wall of the human hole And a step of providing an elastic water-stopping tubular portion that can be elastically deformed in a gap obtained by removing the cylindrical temporary frame from the inner wall of the portion where the existing pipe is removed.

  According to an eighth aspect of the present invention, in the cylindrical auxiliary member according to the first, second, third, fourth, fifth, sixth, or seventh aspect, the outer diameter gradually decreases toward the open end. It is characterized by being formed in a substantially cone shape or a pyramid shape.

  According to the earthquake resistance construction method of the existing pipe human hole connection part according to claim 1, 2, 3, the cylindrical auxiliary member fixed to the inner peripheral wall of the human hole constitutes a part of the peripheral wall of the human hole, and is cylindrical. The inner circumference of the auxiliary member constitutes a part of the bore of the peripheral wall of the human hole, and the existing pipe and the lining pipe arranged on the inner circumference of the elastic water-stop tubular portion serve as the existing pipe, The lining pipe on the inner periphery of the water-stop tubular portion constitutes the end portion of the existing pipe fitted to the inner periphery of the cylindrical auxiliary member constituting a part of the tube hole of the peripheral wall of the human hole, and the cylindrical auxiliary member The lining pipe and the existing pipe manhole connection portion are newly constructed.

  Since there is an elastically deformable elastic water-stop tubular portion having a thickness substantially equal to the thickness of the existing pipe between the cylindrical auxiliary member constituting a part of the peripheral wall of the human hole and the lining pipe, the earthquake The existing pipe composed of the cylindrical auxiliary member and the lining pipe, which can absorb the difference in movement between the lining pipe and the cylindrical auxiliary member, which acts as an existing pipe, which occurs when the spill occurs. It is possible to prevent the manhole connection portion from being destroyed by the earthquake motion.

  In addition, due to the difference in movement between the existing pipe and the peripheral wall of the human hole due to the earthquake, the end of the existing pipe fitted in the pipe hole will break, but as described above, the lining pipe serves as the existing pipe. Therefore, the end part of the existing pipe is fitted into the hole of the peripheral wall of the human hole, so that even if the end part of the existing pipe is broken, it can be sufficiently compensated by the lining pipe. And there is no risk of impairing the function of the existing pipe.

  Further, in the seismic retrofitting method for the existing pipe manhole connection portion according to the present invention, since the peripheral wall of the human hole is not cut off and the existing pipe and the human hole peripheral wall are not cut as in the prior art, the cutter is used. Problems such as damaging underground cables and buried objects such as underground pipes for various fluids that are close to the outer periphery of the peripheral wall of the human hole, and into the pipe hole of the peripheral wall of the human hole, outside the peripheral wall of the human hole The conventional problem that a certain earth and sand flows in and makes the operation troublesome does not occur, and the strength of the human hole is not affected.

  According to the seismic retrofit method for the existing pipe manhole connection portion according to claim 4, when the axial length of the cylindrical auxiliary member according to claim 1, 2 or 3 is an earthquake Since it is set on the basis of the amount of advance and retreat of the existing pipe in the hole in the peripheral wall of the human hole, it is constituted by an existing pipe constituted by a lining pipe caused by an earthquake and a cylindrical auxiliary member The difference in movement from the peripheral wall of the human hole can be reliably absorbed by the elastic water-stop tubular portion existing between the cylindrical auxiliary member and the lining pipe.

  According to the earthquake resistance construction method of the existing pipe human hole connecting portion according to claim 5, 6, 7, the cylindrical auxiliary member fixed to the inner peripheral wall of the human hole constitutes a part of the peripheral wall of the human hole, and is cylindrical The inner periphery of the auxiliary member constitutes a part of the tube hole of the peripheral wall of the human hole, and the existing tube and the lining tube disposed on the inner periphery of the elastic water-stop tubular portion serve as an existing tube, The lining pipe on the inner periphery of the elastic water-stop tubular portion constitutes the end of the existing pipe that is fitted to the inner periphery of the cylindrical auxiliary member that forms part of the tube hole of the peripheral wall of the human hole, and the cylindrical auxiliary The member and the lining pipe constitute a part of the existing pipe manhole connecting portion.

  An elastic deformation having a thickness substantially equal to the wall thickness of the existing pipe is possible between the inner pipe of the cylindrical auxiliary member and the lining pipe between the portion of the pipe hole on the peripheral wall of the human hole and the lining pipe. Because there is an elastic water-stop tubular part, the difference in movement between the lining pipe that acts as an existing pipe and the peripheral wall of the human hole and the cylindrical auxiliary member that occurs when an earthquake occurs is Since it can absorb, it can prevent the existing pipe manhole connection portion from being destroyed by the earthquake motion, and the inner pipe of the cylindrical auxiliary member and the existing pipe in the pipe hole of the peripheral wall of the manhole are excised. Since the elastic water-stopping tubular portion is provided on the inner wall of the portion, the elastic water-stopping tubular portion can be provided long in the axial direction, so that the difference in movement can be more effectively absorbed by the elastic water-stopping tubular portion, and The water stop effect is also improved.

  In addition, due to the difference in movement between the existing pipe and the peripheral wall of the human hole due to the earthquake, the end of the existing pipe fitted in the pipe hole will break, but as described above, the lining pipe serves as the existing pipe. Therefore, the end part of the existing pipe is fitted into the hole of the peripheral wall of the human hole, so that even if the end part of the existing pipe is broken, it can be sufficiently compensated by the lining pipe. And there is no risk of impairing the function of the existing pipe.

  Further, in the seismic improvement method for the existing pipe human hole connecting portion according to the present invention, the end portion of the existing pipe fitted into the pipe hole of the peripheral wall of the human hole is connected to the inner peripheral wall surface of the peripheral wall of the human hole. The cutter does not protrude outside the peripheral wall of the human hole, so that the space between the peripheral wall of the peripheral wall of the human hole and the surrounding area of the existing pipe is closed. Yes, 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 to prevent or minimize the inflow of water. The work can be easily controlled, and there is a risk of damaging the buried objects such as underground cables and various pipes for fluids that exist in the vicinity of the outer periphery of the peripheral wall of the manhole by the cutter. There is no.

  According to the earthquake resistant construction method of the existing pipe manhole connection portion according to claim 8, in the cylindrical auxiliary member according to claim 1, 2, 3, 4, 5, 6 or 7, Since the outer diameter is formed into a substantially conical shape or a pyramid shape so that the outer diameter gradually becomes smaller toward the tip of the open side, the input such as filth put into the human hole protrudes from the inner peripheral wall of the human hole. It is possible to prevent the cylindrical auxiliary member from being caught.

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

  FIG. 1 to FIG. 4 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 cylindrical auxiliary member is fixed to the inner peripheral wall of FIG. 3, FIG. 3 is a longitudinal sectional view showing a state in which an elastic water stop tubular portion is provided on the inner periphery of the cylindrical auxiliary member shown in FIG. These are the longitudinal cross-sectional views which show the state which has arrange | positioned the lining pipe | tube in the inner periphery of the existing pipe | tube and the elastic water stop tubular part.

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

  As shown in FIG. 2, first, the seismic retrofit method for the existing pipe human hole connecting portion 6 having such a structure is formed on the inner peripheral wall of the basic peripheral wall portion 4 a of the human hole 3. A cylindrical auxiliary member 9 having the same inner diameter is fixed coaxially with the tube hole 5.

  Prior to fixing the cylindrical auxiliary member 9 to the inner peripheral wall of the basic peripheral wall portion 4a of the human hole 3, in order to secure a work space necessary for fixing the cylindrical auxiliary member 9, the invert concrete 10 is within a necessary range. Just excise it. As will be described later, the area where the invert concrete 10 is cut also becomes a space filled with an elastic material that absorbs the difference in movement between the existing pipe 2 and the peripheral wall 4 of the human hole 3.

  The cylindrical auxiliary member 9 fixed to the inner peripheral wall of the basic peripheral wall portion 4 a of the human hole 3 constitutes a part of the basic peripheral wall portion 4 a of the human hole 3, and the inner periphery thereof is a tube of the basic peripheral wall portion 4 a of the human hole 3. A part of the hole 5 is formed. The means for fixing the cylindrical auxiliary member 9 to the inner peripheral wall of the basic peripheral wall portion 4a is fixed by the bolt 19 in this example, but may be fixed by an adhesive. When the cylindrical auxiliary member 9 is fixed to the inner peripheral wall of the basic peripheral wall portion 4a, it is preferable that a sealing (not shown) is interposed between the cylindrical auxiliary member 9 and the inner peripheral wall of the basic peripheral wall portion 4a.

  The cylindrical auxiliary member 9 is made of concrete, hard rubber, hard plastic or the like. Further, the axial length of the cylindrical auxiliary member 9 is not particularly limited, but in this example, the advancement / retraction of the existing pipe 2 in the pipe hole 5 of the human hole 3 assumed when an earthquake occurs is provided. The movement amount is set as a reference. That is, based on the expected magnitude of the earthquake, the amount of movement of the existing pipe 2 in the tube hole 5 of the human hole 3 is obtained, and the axial length of the cylindrical auxiliary member 9 is set based on this amount of movement. To do. The axial length of the cylindrical auxiliary member 9 is preferably 40 mm or more. Further, in this example, the outer shape of the cylindrical auxiliary member 9 has a substantially conical shape so that the outer diameter on the side fixed to the inner peripheral wall of the basic peripheral wall portion 4a is large and the diameter gradually decreases toward the open end. Although it is formed, it may be a pyramid shape.

  Next, as shown in FIG. 3, an elastically deformable elastic water-stop tubular portion 11 having a thickness substantially equal to the thickness of the existing pipe 2 is provided on the inner periphery of the cylindrical auxiliary member 9.

  The elastic water-stop tubular portion 11 is formed using an elastic water-stop material such as a soft resin such as silicon resin or soft epoxy urethane, or a rubber material, for example, a water expansion rubber material containing a water-absorbing material. As a means for providing the elastic water-stop tubular portion 11 on the inner periphery of the cylindrical auxiliary member 9, in this example, the elastic water-stop tubular portion 11 having a thickness substantially equal to the wall thickness of the existing pipe 2 is formed of an elastic water-proof material. And although this elastic water-stop tubular part 11 is inserted and provided in the inner periphery of the cylindrical auxiliary member 9, it is not limited to this.

  The elastic water-stop tubular portion 11 may be adhered to the outer peripheral surface of the lining pipe, which will be described later, or may be pressed against the outer peripheral surface of the lining pipe. Although not shown in the drawing, the inner surface of the elastic water-stop tubular portion 11 is preferably formed in a wave shape to ensure sealing performance and slidability with the lining pipe.

  Next, as shown in FIG. 4, the lining pipe 12 is disposed on the inner circumference of the existing pipe 2 and the elastic water-stop tubular portion 11. In the case of the lining pipe 12, in this example, a cylindrical lining material 13 in a curable soft state is inserted into the inner circumference of the existing pipe 2 and the elastic water-stop tubular portion 11, and the existing pipe 2 and the elastic water-stop pipe are provided. The lining pipe 12 is formed and disposed by pressing the peripheral wall surface of the cylindrical lining material 13 against the inner wall of the portion 11 and curing it.

  In the method of inserting the tubular lining material 13 into the inner periphery of the existing pipe 2 and the elastic water-stop tubular portion 11 and forming and arranging the lining pipe 12 on the inner wall of the existing pipe 2 and the elastic water-stop tubular portion 11 Well-known techniques are used.

  For example, a flexible tubular lining material 13 impregnated or coated with an uncured curable resin is used for existing pipes using the techniques disclosed in Japanese Patent Publication No. 7-4853 and Japanese Patent Application Laid-Open No. 2005-90581. 2 and the inner wall of the elastic water-stop tubular portion 11, and the lining resin 12 is cured by pressing the peripheral wall surface of the tubular lining material 13 against the inner walls of the existing pipe 2 and the elastic water-stop tubular portion 11. Can be formed and arranged. The tubular lining material 13 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 13 molded from a thermoplastic resin is replaced with the existing pipe 2 and the elastic stopper. The lining pipe 12 is inserted into the inner periphery of the water tubular portion 11, and is heated and softened by pressurizing and expanding the tubular lining material 13 against the inner wall of the existing pipe 2 and the elastic water-stop tubular portion 11. May be formed and arranged.

  When the cylindrical lining material 13 is inserted into the existing pipe 2 and the elastic water-stop tubular portion 11, it is inserted over the entire length of the existing pipe 2 and the elastic water-stop tubular portion 11 separated by the two human holes 3. And it is preferable to form and arrange | position the lining pipe | tube 12 by the cylindrical lining material 13 in the inner periphery of the existing pipe | tube 2 and the elastic water-stop tubular part 11. FIG.

  Further, as another example of the lining tube 12, although not shown, for example, a flexible sheet-like shape impregnated or coated with an uncured curable resin using a technique disclosed in JP-A-10-82497. The lining material is wound around the repair machine, the repair machine is inserted into the inner circumference of the existing pipe 2 and the elastic water-stop tubular portion 11, and the sheet-like lining material is expanded by air pressure so that the sheet-like lining material is elasticated. The lining pipe 12 can be formed and disposed by pressing the inner wall of the water-stop tubular portion 11 to cure the curable resin.

  Although not shown, other examples of forming the lining pipe 12 and arranging it on the inner circumference of the existing pipe 2 and the elastic water-stop tubular portion 11 include, for example, Japanese Patent Publication No. 4-44153 and Japanese Patent Application Laid-Open No. 2003-191329. The belt-shaped member is sequentially folded in the circumferential direction, and the side ends of the belt-shaped member are joined to each other to form a spirally wound lining tube 12, while the lining tube 12 is connected to the existing tube 2 and the elastic stopper. You may make it send and arrange | position to the inner periphery of the water tubular part 11. FIG.

  Thereafter, as described above, prior to fixing the cylindrical auxiliary member 9 to the inner peripheral wall of the basic peripheral wall portion 4a of the human hole 3, it is necessary to secure a work space necessary for the fixing operation of the cylindrical auxiliary member 9. A filler 14 is filled into the cut portion of the invert concrete 10 that has been cut only in the range. The filler 14 is not particularly limited but is preferably an elastic material. In this example, an elastic material is used as the filler 14. As this elastic material, you may use the elastic water stop material which forms the elastic water stop tubular part 11, for example. Further, the step portions of the lining pipe 12 and the inverted concrete 10 are filled with a filler 15 such as resin or mortar. In this way, the process of implementing the seismic retrofitting method for the existing pipe manhole connection is completed.

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

  According to the earthquake resistance construction method for the existing pipe human hole connecting portion, the cylindrical auxiliary member 9 fixed to the inner peripheral wall of the basic peripheral wall portion 4a of the human hole 3 constitutes a part of the peripheral wall 4 of the human hole 3, The inner periphery of the auxiliary member 9 constitutes a part of the tube hole 5 of the peripheral wall 4 of the human hole 3, and the lining tube 12 disposed on the inner periphery of the existing tube 2 and the elastic water-stop tubular portion 11 is an existing tube. 2, the lining pipe 12 on the inner circumference of the elastic water-stop tubular portion 11 is fitted to the inner circumference of the cylindrical auxiliary member 9 constituting a part of the pipe hole 5 of the peripheral wall 4 of the human hole 3. The end portion of the existing pipe 2 is formed, and the existing auxiliary pipe 9 is formed by the cylindrical auxiliary member 9 and the lining pipe 12.

  An elastically deformable elastic water-stop tubular portion 11 having a thickness substantially equal to the thickness of the existing pipe 2 is provided between the cylindrical auxiliary member 9 constituting a part of the peripheral wall 4 of the human hole 3 and the lining pipe 12. Therefore, the elastic water-stop tubular portion 11 can absorb the difference in movement between the lining pipe 12 serving as the existing pipe 2 and the cylindrical auxiliary member 9 that occurs when an earthquake occurs. The existing pipe manhole connection portion 6 composed of the lining pipe 12 is prevented from being destroyed by the earthquake motion.

  In this example, the axial length of the cylindrical auxiliary member 9 is determined based on the expected magnitude of the earthquake, and the amount of movement of the existing pipe 2 in the pipe hole 5 of the human hole 3 is obtained. Since the axial length of the cylindrical auxiliary member 9 is set as a reference, the lining pipe 12 serving as the existing pipe 2 caused by the earthquake and a part of the pipe hole 5 of the peripheral wall 4 of the human hole 3 are configured. The difference in movement from the cylindrical auxiliary member 9 to be performed can be reliably absorbed by the elastic water-stop tubular portion 11 existing between the cylindrical auxiliary member 9 and the lining pipe 12.

  Further, 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 end portion of the existing pipe 2 fitted in the pipe hole 5 is broken, but as described above, the lining pipe 12 Plays the role of the existing pipe 2 and its end constitutes the end of the existing pipe 2 fitted into the pipe hole 5 of the peripheral wall 4 of the human hole 3. Even if there is a breakage, the lining pipe 12 can be sufficiently supplemented, and there is no possibility that the function as the existing pipe 12 is impaired.

  Further, in this example, the outer shape of the cylindrical auxiliary member 9 has a substantially conical shape so that the outer diameter on the side fixed to the inner peripheral wall of the basic peripheral wall portion 4a is large and the diameter gradually decreases toward the open end. Since it is formed, an input such as filth introduced into the human hole 3 is prevented from being caught by the cylindrical auxiliary member 9 protruding from the inner peripheral wall of the human hole 3.

  FIG. 5 and FIG. 6 show a part of the process of the second example for carrying out the seismic retrofitting method for the existing pipe human hole connecting portion according to the present invention. FIG. FIG. 6 is a longitudinal cross-sectional view showing a state in which a cylindrical auxiliary member provided with a water-stop tubular portion is fixed, and FIG. 6 is a vertical cross-sectional view showing a state in which a lining pipe is arranged on the inner periphery of the existing pipe and the elastic water-stop tubular portion.

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

  As shown in FIG. 5, first, the seismic retrofit method for the existing pipe human hole connecting portion 6 having the structure shown in FIG. 1 is formed on the inner peripheral wall of the basic peripheral wall portion 4 a of the human hole 3. A cylindrical auxiliary member 9 having an inner diameter of the same diameter as that of the existing pipe 2 and having an elastically deformable elastic water-stop tubular portion 11 having a thickness substantially equal to the wall thickness of the existing pipe 2 is coaxial with the pipe hole 5. Fix it.

  Even in this example, as in the first example, the work space necessary for fixing the cylindrical auxiliary member 9 prior to fixing the cylindrical auxiliary member 9 to the inner peripheral wall of the basic peripheral wall portion 4a of the human hole 3 is as follows. In order to ensure this, the invert concrete 10 is cut out only in a necessary range.

  The cylindrical auxiliary member 9 is the same as the first example, and the description of the first example is cited. Moreover, even if it exists in the elastic water-stop tubular part 11 provided in the inner periphery of the cylindrical auxiliary member 9, it is the same as that of a 1st example, and description of a 1st example is used.

  The cylindrical auxiliary member 9 fixed to the inner peripheral wall of the basic peripheral wall portion 4a of the human hole 3 constitutes a part of the basic peripheral wall portion 4a of the human hole 3 as in the first example, and the inner periphery thereof is a human hole. 3 constitutes a part of the tube hole 5 of the basic peripheral wall portion 4a. The means for fixing the cylindrical auxiliary member 9 to the inner peripheral wall of the basic peripheral wall portion 4a is the same as the first example, and the description of the first example is cited.

  Next, as shown in FIG. 6, the lining pipe 12 is disposed on the inner circumference of the existing pipe 2 and the elastic water-stop tubular portion 11. Since this process is also the same as the first example, the description of the first example is cited.

  Thereafter, in order to secure a work space necessary for fixing the cylindrical auxiliary member 9 prior to fixing the cylindrical auxiliary member 9 to the inner peripheral wall of the basic peripheral wall portion 4a of the human hole 3, as described above, As in the first example, the filler 14 is filled into the cut portion of the invert concrete 10 where the concrete 10 has been cut only in a necessary range. Further, the step portions of the lining pipe 12 and the inverted concrete 10 are filled with a filler 15 such as resin or mortar. In this way, the process of implementing the seismic retrofitting method for the existing pipe manhole connection is completed.

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

  In the above-described seismic retrofitting method for the existing pipe manhole connection portion, in this example, a cylinder provided with an elastically deformable elastic water stop tubular portion 11 having a thickness substantially equal to the thickness of the existing pipe 2 on the inner periphery. Since the auxiliary member 9 is fixed coaxially with the tube hole 5, the operation of providing the elastic water-stop tubular portion 11 on the inner periphery of the cylindrical auxiliary member 9 in the human hole 3 is eliminated. It becomes easy to work with. The other effects are the same as those of the first example described above, so the description of the effects of the first example is cited.

  7 to 11 show a third example in which the seismic retrofitting method for the existing pipe human hole connection portion according to the present invention is implemented. FIG. 7 shows a state in which the cylindrical auxiliary member is fixed to the inner peripheral wall of the human hole. FIG. 8 is a longitudinal sectional view showing a state where a cylindrical temporary frame is provided on the inner circumference of the cylindrical auxiliary member shown in FIG. 7, and FIG. 9 is a lining pipe on the inner circumference of the existing pipe and the cylindrical temporary frame. FIG. 10 is a longitudinal sectional view showing a state in which the cylindrical temporary frame provided in the cylindrical auxiliary member is removed from the cylindrical auxiliary member after arranging the lining pipe on the inner periphery of the existing pipe and the cylindrical temporary frame. FIG. 11 is a longitudinal sectional view showing a state in which an elastic water-stopping tubular portion that can be elastically deformed is provided in the gap obtained by removing the tubular temporary frame from the tubular auxiliary member shown in FIG. is there.

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

  As shown in FIG. 7, first, the seismic retrofit method for the existing pipe human hole connecting portion 6 having the structure shown in FIG. 1 is formed on the inner peripheral wall of the basic peripheral wall portion 4 a of the human hole 3. A cylindrical auxiliary member 9 having the same inner diameter as that of the tube hole 5 is fixed coaxially with the tube hole 5.

  Even in this example, as in the first example, the work space necessary for fixing the cylindrical auxiliary member 9 prior to fixing the cylindrical auxiliary member 9 to the inner peripheral wall of the basic peripheral wall portion 4a of the human hole 3 is as follows. In order to ensure this, the invert concrete 10 is cut out only in a necessary range.

  The cylindrical auxiliary member 9 is the same as the first example, and the description of the first example is cited. The cylindrical auxiliary member 9 fixed to the inner peripheral wall of the basic peripheral wall portion 4a of the human hole 3 constitutes a part of the basic peripheral wall portion 4a of the human hole 3 as in the first example, and the inner periphery thereof is a human hole. 3 constitutes a part of the tube hole 5 of the basic peripheral wall portion 4a. The means for fixing the cylindrical auxiliary member 9 to the inner peripheral wall of the basic peripheral wall portion 4a is the same as the first example, and the description of the first example is cited.

  Next, as shown in FIG. 8, a cylindrical temporary frame 16 having a thickness substantially equal to the thickness of the existing pipe 2 is provided on the inner periphery of the cylindrical auxiliary member 9. The cylindrical temporary frame 16 is removed later, and it is preferable to form a slit in the axial direction or a spiral slit in order to facilitate the removal.

  Next, as shown in FIG. 9, the lining pipe 12 is disposed on the inner periphery of the existing pipe 2 and the cylindrical temporary frame 16. The process of arranging the lining pipe 12 on the inner periphery of the existing pipe 2 and the cylindrical temporary frame 16 is the same as the first example, and therefore the description of the first example is cited.

  Next, as shown in FIG. 10, the cylindrical temporary frame 16 provided in the cylindrical auxiliary member 9 is removed from the cylindrical auxiliary member 9, and as shown in FIG. An elastic water-stop tubular portion 11 that can be elastically deformed is provided in the gap from which the frame 16 is removed. In the elastic water-stop tubular portion 11, in addition to the first example, the elastic water-stop tubular portion 11 may be formed by injecting and solidifying a liquid elastic water-stop material.

  Thereafter, in order to secure a work space necessary for fixing the cylindrical auxiliary member 9 prior to fixing the cylindrical auxiliary member 9 to the inner peripheral wall of the basic peripheral wall portion 4a of the human hole 3, as described above, As in the first example, the filler 14 is filled into the cut portion of the invert concrete 10 where the concrete 10 has been cut only in a necessary range. Further, the step portions of the lining pipe 12 and the inverted concrete 10 are filled with a filler 15 such as resin or mortar. In this way, the process of implementing the seismic retrofitting method for the existing pipe manhole connection is completed.

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

  In the above-described seismic retrofitting method for the existing pipe manhole connection portion, in this example, the elastic water-stop tubular portion 11 is provided in the gap obtained by removing the cylindrical temporary frame 16 from the cylindrical auxiliary member 9, so that the elastic water-stop tube In the shape part 11, it becomes possible to form and provide the elastic water stop tubular part 11 by injecting and solidifying a liquid elastic water stop material. The other effects are the same as those of the first example described above, so the description of the effects of the first example is cited.

  FIGS. 12 to 15 show a fourth example in which the seismic retrofitting method for the existing pipe manhole connection portion according to the present invention is carried out. FIG. 12 shows the existing pipe fitted in the hole of the peripheral wall of the manhole. FIG. 13 is a longitudinal sectional view showing a state in which a cylindrical auxiliary member is fixed to the inner circumferential wall of the human hole, and FIG. 14 is a cylinder shown in FIG. FIG. 15 is a longitudinal sectional view showing a state in which an elastic water-stop tubular portion is provided on the inner wall of a portion where an existing pipe is cut off in the inner periphery of the auxiliary member and the peripheral wall of the human hole, and FIG. 15 shows the existing pipe and the elastic water-stop tubular portion It is a longitudinal cross-sectional view which shows the state which has arrange | positioned the lining pipe | tube in the inner periphery.

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

  As shown in FIG. 12, 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. The end of the existing pipe 2 is excised from the inner peripheral wall surface 17 side of the foundation peripheral wall portion 4a within a range not exceeding the outer peripheral wall surface 18.

  Prior to excision of the end portion of the existing pipe 2, work space necessary for excising the end portion of the existing pipe 2 and fixing the cylindrical auxiliary member 9 to the inner peripheral wall of the basic peripheral wall portion 4 a of the human hole 3 described later. In order to ensure this, the invert concrete 10 is cut out only in a necessary range.

  The end of the existing pipe 2 is not particularly limited, but in this example, the end is cut with a ring-shaped cutter (not shown).

  Next, as shown in FIG. 13, the cylindrical auxiliary member 9 having the same inner diameter as the tube hole 5 is fixed coaxially with the tube hole 5 on the inner peripheral wall of the basic peripheral wall portion 4 a of the human hole 3.

  The cylindrical auxiliary member 9 is the same as the first example, and the description of the first example is cited. The cylindrical auxiliary member 9 fixed to the inner peripheral wall of the basic peripheral wall portion 4a of the human hole 3 constitutes a part of the basic peripheral wall portion 4a of the human hole 3 as in the first example, and the inner periphery thereof is a human hole. 3 constitutes a part of the tube hole 5 of the basic peripheral wall portion 4a. The means for fixing the cylindrical auxiliary member 9 to the inner peripheral wall of the basic peripheral wall portion 4a is the same as the first example, and the description of the first example is cited.

  Next, as shown in FIG. 14, the thickness of the existing pipe 2 and the inner wall of the portion where the existing pipe 2 in the pipe hole 5 of the basic peripheral wall 4 a of the human hole 3 is cut off are An elastic water-stopping tubular portion 11 having an approximately equal thickness and capable of elastic deformation is provided. The elastic water-stop tubular portion 11 is the same as the first example, and the description of the first example is cited.

  Next, as shown in FIG. 15, the lining pipe 12 is arranged on the inner circumference of the existing pipe 2 and the elastic water-stop tubular portion 11. Since this process is also the same as the first example, the description of the first example is cited.

  Thereafter, as described above, prior to excision of the end portion of the existing pipe 2, excision work of the end portion of the existing pipe 2 and fixing of the cylindrical auxiliary member 9 to the inner peripheral wall of the basic peripheral wall portion 4 a of the human hole 3 described later. In order to secure the work space necessary for the work, the filler 14 is filled in the cut portion of the invert concrete 10 in which only the necessary range of the invert concrete 10 has been cut. Further, the step portions of the lining pipe 12 and the inverted concrete 10 are filled with a filler 15 such as resin or mortar. In this way, the process of implementing the seismic retrofitting method for the existing pipe manhole connection is completed.

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

  In the seismic retrofitting method for the existing pipe human hole connection part, the inner pipe of the cylindrical auxiliary member 9 and the part of the pipe hole 5 of the basic peripheral wall part 4a of the human hole 3 cut out and the lining pipe 12 The elastic water-stop tubular portion 11 exists between the lining pipe 12 and the cylindrical auxiliary member 9, which serve as the existing pipe 2 and is generated when an earthquake occurs. 9, it is possible to prevent the existing pipe manhole connection portion 6 from being destroyed by the earthquake motion, and the existing pipe 2 in the inner periphery of the cylindrical auxiliary member 9 and the pipe hole 5 of the manhole 3 can be removed. Since the elastic water-stop tubular portion 11 is provided on the inner wall of the excised part, the elastic water-stop tubular portion 11 can be provided long in the axial direction, and thereby, the movement difference is more effectively absorbed by the elastic water-stop tubular portion. And the water stop effect is improved.

  Further, in this example, the end portion of the existing pipe 2 fitted into the tube hole 5 of the basic peripheral wall portion 4 a of the human hole 3 is connected to the outer peripheral wall surface 18 from the inner peripheral wall surface 17 side of the basic peripheral wall portion 4 a of the human hole 3. Therefore, the cutter does not protrude outside the basic peripheral wall portion 4a of the human hole 3, and therefore, the space between the outer peripheral wall surface 18 of the basic peripheral wall portion 4a of the human hole 3 and the periphery of the existing pipe 2 is not increased. Is in a closed state, and can prevent the earth and sand outside the manhole 3 from flowing into the tube hole 5 of the manhole 3 from between the outer peripheral wall surface 18 and the surrounding of the existing tube 2, and the inflow of water Can be prevented or minimized, and the work can be easily performed. For underground cables and various fluids existing in the vicinity of the outer periphery of the basic peripheral wall portion 4a of the human hole 3 by a cutter. There is no risk of damaging buried objects such as buried pipes.

  The other effects are the same as those of the first example described above, so the description of the effects of the first example is cited.

  16 and 17 show a part of the process of the fifth example for carrying out the seismic retrofitting method for the existing pipe manhole connection portion according to the present invention, and FIG. 16 protrudes from the end face of the cylindrical auxiliary member. FIG. 17 is a longitudinal sectional view showing a state in which the elastic water-stop tubular portion is inserted into a portion where the existing pipe in the hole of the peripheral wall of the human hole is cut and the cylindrical auxiliary member is fixed to the inner peripheral wall of the human hole. It is a longitudinal cross-sectional view which shows the state which has arrange | positioned the lining pipe | tube to the inner periphery of the elastic water stop tubular part.

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

  The seismic retrofitting method of this example performed on the existing pipe human hole connecting part 6 having the structure shown in FIG. 1 is first fitted into the pipe hole 5 of the basic peripheral wall part 4a of the human hole 3 as in the fourth example. The end portion of the existing pipe 2 is excised from the inner peripheral wall surface 17 side of the basic peripheral wall portion 4a within a range not exceeding the outer peripheral wall surface 18 (referring to FIG. 12). Prior to excision of the end of the existing pipe 2, as in the fourth example, the excision work of the end of the existing pipe 2 and the cylindrical auxiliary member 9 to the inner peripheral wall of the basic peripheral wall 4a of the human hole 3 to be described later are performed. In order to secure a work space necessary for the fixing work, the invert concrete 10 is cut out only in a necessary range.

  Next, as shown in FIG. 16, on the inner periphery of the cylindrical auxiliary member 9 having the same inner diameter as the tube hole 5, an elastically deformable elastic water-stop tube having a thickness substantially equal to the thickness of the existing tube 2 is provided. A portion 11 is provided, and the elastic water-stop tubular portion 11 is projected from the end surface of the cylindrical auxiliary member 9 to a length corresponding to a portion of the tube hole 5 of the basic peripheral wall portion 4a of the human hole 3 cut out. The tubular auxiliary member 9 is inserted into a portion of the tube hole 5 of the basic peripheral wall portion 4a of the human hole 3 where the existing pipe 2 is cut out by inserting the elastic water-stop tubular portion 11 protruding from the end face of the cylindrical auxiliary member 9 9 is fixed to the inner peripheral wall of the human hole 3 coaxially with the tube hole 5.

  The cylindrical auxiliary member 9 is the same as the first example, and the description of the first example is cited. Moreover, even if it exists in the elastic water-stop tubular part 11 provided in the inner periphery of the cylindrical auxiliary member 9, it is the same as that of a 1st example, and description of a 1st example is used.

  The cylindrical auxiliary member 9 fixed to the inner peripheral wall of the basic peripheral wall portion 4a of the human hole 3 constitutes a part of the basic peripheral wall portion 4a of the human hole 3 as in the first example, and the inner periphery thereof is a human hole. 3 constitutes a part of the tube hole 5 of the basic peripheral wall portion 4a. The means for fixing the cylindrical auxiliary member 9 to the inner peripheral wall of the basic peripheral wall portion 4a is the same as the first example, and the description of the first example is cited.

  Next, as shown in FIG. 17, the lining pipe 12 is disposed on the inner circumference of the existing pipe 2 and the elastic water-stop tubular portion 11. Since this process is also the same as the first example, the description of the first example is cited.

  Thereafter, as described above, prior to excision of the end portion of the existing pipe 2, excision work of the end portion of the existing pipe 2 and fixing of the cylindrical auxiliary member 9 to the inner peripheral wall of the basic peripheral wall portion 4 a of the human hole 3 described later. In order to secure the work space necessary for the work, the filler 14 is filled in the cut portion of the invert concrete 10 in which only the necessary range of the invert concrete 10 has been cut. Further, the step portions of the lining pipe 12 and the inverted concrete 10 are filled with a filler 15 such as resin or mortar. In this way, the process of implementing the seismic retrofitting method for the existing pipe manhole connection is completed.

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

  In the above-described seismic retrofitting method for the existing pipe manhole connection portion, the thickness of the existing pipe 2 is substantially equal to the inner circumference of the cylindrical auxiliary member 9 having the same inner diameter as the pipe hole 5 in this example. An elastic water-stopping tubular portion 11 having a thickness that can be elastically deformed is provided, and the elastic water-stopping tubular portion 11 is cut from the end surface of the cylindrical auxiliary member 9 and the existing pipe 2 in the tube hole 5 of the basic peripheral wall portion 4a of the human hole 3 is excised. The elastic water-stopping tubular portion 11 protruding from the end face of the cylindrical auxiliary member 9 is cut off the existing pipe 2 in the pipe hole 5 of the basic peripheral wall portion 4 a of the human hole 3. The cylindrical auxiliary member 9 is fixed to the inner peripheral wall of the human hole 3 coaxially with the pipe hole 5 so that the elastic water-stop tubular portion is formed on the inner periphery of the cylindrical auxiliary member 9 in the human hole 3. Therefore, the work in the manhole 3 is facilitated. As other effects, the same effects as those of the fourth example described above can be obtained, so the description of the effects of the fourth example is cited.

  18 to 22 show a sixth example in which the seismic retrofitting method for the existing pipe human hole connecting portion according to the present invention is performed. FIG. 18 shows a state in which the cylindrical auxiliary member is fixed to the inner peripheral wall of the human hole. FIG. 19 is a longitudinal sectional view showing a state in which a cylindrical temporary frame is provided on the inner wall of a portion where the existing pipe is cut off in the inner periphery of the cylindrical auxiliary member and the peripheral hole of the human hole, and FIG. FIG. 21 is a longitudinal sectional view showing a state in which the lining pipe is arranged on the inner circumference of the existing pipe and the cylindrical temporary frame. FIG. 21 shows the inside of the cylindrical auxiliary member after the lining pipe is arranged on the inner circumference of the existing pipe and the cylindrical temporary frame. FIG. 22 is a longitudinal sectional view showing a state in which the cylindrical temporary frame provided on the inner wall of the portion where the existing pipe is cut off in the tube hole of the peripheral wall of the periphery and the human hole is removed from the cylindrical auxiliary member, and FIG. 22 is the cylindrical auxiliary shown in FIG. In the gap where the cylindrical temporary frame is removed from the inner wall of the part where the existing pipe is cut off in the pipe hole of the inner wall of the member and the peripheral wall of the human hole Is a longitudinal sectional view showing a state where an elastic deformable elastic waterproofing tubular portion.

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

  The seismic retrofitting method of this example performed on the existing pipe human hole connecting part 6 having the structure shown in FIG. 1 is first fitted into the pipe hole 5 of the basic peripheral wall part 4a of the human hole 3 as in the fourth example. The end portion of the existing pipe 2 is excised from the inner peripheral wall surface 17 side of the basic peripheral wall portion 4a within a range not exceeding the outer peripheral wall surface 18 (referring to FIG. 12). Prior to excision of the end of the existing pipe 2, as in the fourth example, the excision work of the end of the existing pipe 2 and the cylindrical auxiliary member 9 to the inner peripheral wall of the basic peripheral wall 4a of the human hole 3 to be described later are performed. In order to secure a work space necessary for the fixing work, the invert concrete 10 is cut out only in a necessary range.

  Next, as shown in FIG. 18, a cylindrical auxiliary member 9 having the same inner diameter as the tube hole 5 is fixed coaxially with the tube hole 5 on the inner peripheral wall of the basic peripheral wall portion 4 a of the human hole 3.

  The cylindrical auxiliary member 9 is the same as the first example, and the description of the first example is cited. The cylindrical auxiliary member 9 fixed to the inner peripheral wall of the basic peripheral wall portion 4a of the human hole 3 constitutes a part of the basic peripheral wall portion 4a of the human hole 3 as in the first example, and the inner periphery thereof is a human hole. 3 constitutes a part of the tube hole 5 of the basic peripheral wall portion 4a. The means for fixing the cylindrical auxiliary member 9 to the inner peripheral wall of the basic peripheral wall portion 4a is the same as the first example, and the description of the first example is cited.

  Next, as shown in FIG. 19, the thickness of the existing pipe 2 is determined on the inner wall of the tubular auxiliary member 9 and the inner wall of the tube hole 5 of the basic peripheral wall portion 4 a of the human hole 3. A cylindrical temporary frame 16 having substantially the same thickness is provided. The cylindrical temporary frame 16 is removed later, and it is preferable to form a slit in the axial direction or a spiral slit in order to facilitate the removal.

  Next, as shown in FIG. 20, the lining pipe 12 is disposed on the inner periphery of the existing pipe 2 and the cylindrical temporary frame 16. The process of arranging the lining pipe 12 on the inner periphery of the existing pipe 2 and the cylindrical temporary frame 16 is the same as the first example, and therefore the description of the first example is cited.

  Next, as shown in FIG. 21, the cylindrical temporary frame 16 provided on the inner wall of the cylindrical auxiliary member 9 and the inner wall of the portion of the tube hole 5 of the basic peripheral wall portion 4 a of the human hole 3 where the existing pipe 2 is cut off. 22 and removing the cylindrical temporary frame from the inner wall of the inner peripheral portion of the cylindrical auxiliary member 9 and the portion of the tube hole 5 of the basic peripheral wall portion 4a of the human hole 3 where the existing pipe 2 has been removed. An elastic water-stop tubular portion 11 that can be elastically deformed is provided. In the elastic water-stop tubular portion 11, in addition to the first example, the elastic water-stop tubular portion 11 may be formed by injecting and solidifying a liquid elastic water-stop material.

  Thereafter, in order to secure a work space necessary for fixing the cylindrical auxiliary member 9 prior to fixing the cylindrical auxiliary member 9 to the inner peripheral wall of the basic peripheral wall portion 4a of the human hole 3, as described above, As in the first example, the filler 14 is filled into the cut portion of the invert concrete 10 where the concrete 10 has been cut only in a necessary range. Further, the step portions of the lining pipe 12 and the inverted concrete 10 are filled with a filler 15 such as resin or mortar. In this way, the process of implementing the seismic retrofitting method for the existing pipe manhole connection is completed.

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

  In the above-described seismic retrofitting method for the existing pipe manhole connection portion, in this example, a portion of the inner circumference of the cylindrical auxiliary member 9 and the existing pipe 2 in the pipe hole 5 of the basic peripheral wall portion 4a of the manhole 3 are excised. Since the elastic water-stop tubular portion 11 that can be elastically deformed is provided in the gap from which the cylindrical temporary frame has been removed from the inner wall of the tube, a liquid elastic water-stop material is injected and solidified in the elastic water-stop tubular portion 11. Thus, the elastic water-stop tubular portion 11 can be formed and provided. As other effects, the same effects as those of the fourth example described above can be obtained, so the description of the effects of the fourth example is cited.

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. It is a longitudinal cross-sectional view which shows the state which fixed the cylindrical auxiliary member to the inner peripheral wall of the human hole at the process of the 1st example. It is a longitudinal cross-sectional view which shows the state which provided the elastic water stop tubular part in the inner periphery of the cylindrical auxiliary member shown in FIG. 2 at the process of the 1st example. It is a longitudinal cross-sectional view which shows the state which has arrange | positioned the lining pipe | tube in the inner periphery of the existing pipe | tube and the elastic water stop tubular part in the process of the 1st example. In the step of the second example of the implementation of the seismic retrofitting method for the existing pipe manhole connection portion according to the present invention, the state where the cylindrical auxiliary member provided with the elastic water stop tubular portion on the inner periphery is fixed to the inner peripheral wall of the manhole. It is a longitudinal cross-sectional view shown. It is a longitudinal cross-sectional view which shows the state which has arrange | positioned the lining pipe | tube in the inner periphery of the existing pipe | tube and the elastic water stop tubular part in the process of the 2nd example. It is a longitudinal cross-sectional view which shows the state which fixed the cylindrical auxiliary member to the inner peripheral wall of the human hole at the process of the 3rd example of implementation of the seismic resistance construction method of the existing pipe human hole connection part which concerns on this invention. It is a longitudinal cross-sectional view which shows the state which provided the cylindrical temporary frame in the inner periphery of the cylindrical auxiliary member shown in FIG. 7 at the process of the 3rd example. It is a longitudinal cross-sectional view which shows the state which has arrange | positioned the lining pipe | tube in the inner periphery of an existing pipe | tube and a cylindrical temporary frame at the process of the 3rd example. In the step of the third example, after arranging the lining pipe on the inner circumference of the existing pipe and the cylindrical temporary frame, the longitudinal section showing the state where the cylindrical temporary frame provided in the cylindrical auxiliary member is removed from the cylindrical auxiliary member FIG. It is a longitudinal cross-sectional view which shows the state which provided the elastic water stop tubular part which can be elastically deformed in the space | gap which removed the cylindrical temporary frame from the cylindrical auxiliary member shown in FIG. 10 at the process of the 3rd example. In the step of the fourth example of the implementation of the seismic retrofitting method for the existing pipe manhole connection portion according to the present invention, the existing pipe fitted in the pipe hole of the peripheral wall of the human hole is cut at a position not exceeding the outer peripheral wall surface of the peripheral wall. It is a longitudinal cross-sectional view which shows the state which carried out. It is a longitudinal cross-sectional view which shows the state which fixed the cylindrical auxiliary member to the inner peripheral wall of a human hole at the process of the 4th example. FIG. 13 is a longitudinal sectional view showing a state in which an elastic water stop tubular portion is provided on an inner wall of a portion where an existing pipe is cut off in an inner periphery of the cylindrical auxiliary member and a peripheral wall of a human hole in the fourth example process. It is. It is a longitudinal cross-sectional view which shows the state which has arrange | positioned the lining pipe | tube in the inner periphery of the existing pipe | tube and the elastic water-stop tubular part at the process of the 4th example. In the fifth example of the implementation of the seismic retrofitting method for the existing pipe manhole connection portion according to the present invention, the existing water stop tubular portion protruding from the end face of the cylindrical auxiliary member is replaced with the existing pipe in the hole of the peripheral wall of the manhole. It is a longitudinal cross-sectional view which shows the state which inserted in the part which cut out, and fixed the cylindrical auxiliary member to the inner peripheral wall of the human hole. It is a longitudinal cross-sectional view which shows the state which has arrange | positioned the lining pipe | tube in the inner periphery of the existing pipe | tube and the elastic water-stop tubular part at the process of the 5th example. It is a longitudinal cross-sectional view which shows the state which fixed the cylindrical auxiliary member to the inner peripheral wall of the human hole at the process of the 6th example of implementation of the earthquake resistance construction method of the existing pipe human hole connection part which concerns on this invention. It is a longitudinal cross-sectional view which shows the state which provided the cylindrical temporary frame in the inner wall of the part which excised the existing pipe | tube in the inner periphery of a cylindrical auxiliary member, and the tube hole of the surrounding wall of a human hole at the process of a 6th example. It is a longitudinal cross-sectional view which shows the state which has arrange | positioned the lining pipe | tube in the inner periphery of an existing pipe | tube and a cylindrical temporary frame at the process of the 6th example. In the process of the sixth example, after arranging the lining pipe on the inner circumference of the existing pipe and the cylindrical temporary frame, on the inner wall of the part where the existing pipe is cut off in the inner circumference of the cylindrical auxiliary member and the peripheral wall of the human hole It is a longitudinal cross-sectional view which shows the state which removed the provided cylindrical temporary frame from the cylindrical auxiliary member. In the process of the sixth example, it is possible to elastically deform into the gap obtained by removing the cylindrical temporary frame from the inner wall of the portion where the existing pipe is cut off in the inner periphery of the cylindrical auxiliary member and the peripheral wall of the human hole shown in FIG. It is a longitudinal cross-sectional view which shows the state which provided the elastic water stop tubular part.

Explanation of symbols

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 Cylindrical auxiliary member 10 Invert concrete 11 Elastic water stop tubular part 12 Lining pipe 13 Cylindrical lining material 14, 15 Filler 16 Cylindrical temporary frame 17 Inner peripheral wall surface 18 Outer peripheral wall surface 19 Bolt

Claims (8)

  A seismicization method for an existing pipe human hole connecting portion that attempts to make the existing pipe human hole connecting portion seismic resistant, wherein the existing pipe is fitted and connected to a hole in the peripheral wall of the human hole, the inner peripheral wall of the human hole A step of fixing a cylindrical auxiliary member having the same inner diameter as the tube hole coaxially with the tube hole, and an elasticity having a thickness substantially equal to the thickness of the existing pipe on the inner periphery of the cylindrical auxiliary member. A step of providing a deformable elastic water-stop tubular portion, and a step of disposing a lining pipe on the inner periphery of the existing pipe and the elastic water-stop tubular portion, and a seismic retrofitting of an existing pipe manhole connection portion Law.   A seismicization method for an existing pipe human hole connecting portion that attempts to make the existing pipe human hole connecting portion seismic resistant, wherein the existing pipe is fitted and connected to a hole in the peripheral wall of the human hole, the inner peripheral wall of the human hole A tubular auxiliary member having an inner diameter of the same diameter as the tube hole and provided with an elastically deformable elastic water-stop tubular portion having a thickness substantially equal to the thickness of the existing tube on the inner periphery; A method of seismicizing an existing pipe manhole connection portion, comprising: a step of fixing on a coaxial axis and a step of arranging a lining pipe on an inner periphery of the existing pipe and the elastic water-stop tubular portion.   A seismicization method for an existing pipe human hole connecting portion that attempts to make the existing pipe human hole connecting portion seismic resistant, wherein the existing pipe is fitted and connected to a hole in the peripheral wall of the human hole, the inner peripheral wall of the human hole A step of fixing a cylindrical auxiliary member having the same inner diameter as the tube hole coaxially with the tube hole, and a tube having a thickness substantially equal to the thickness of the existing pipe on the inner periphery of the cylindrical auxiliary member. A step of providing a temporary frame, a step of arranging a lining pipe on the inner circumference of the existing pipe and the cylindrical temporary frame, and a lining pipe arranged on the inner circumference of the existing pipe and the cylindrical temporary frame, A step of removing the cylindrical temporary frame provided in the cylindrical auxiliary member, and a step of providing an elastically water-stopable tubular portion that can be elastically deformed in the gap obtained by removing the cylindrical temporary frame from the cylindrical auxiliary member. A seismic retrofitting method for existing pipe manhole connections.   In the cylindrical auxiliary member, the length in the axial direction is set based on the amount of advance and retreat of the existing pipe in the pipe hole of the peripheral wall of the human hole assumed when there is an earthquake. The earthquake resistance construction method for an existing pipe manhole connection part according to claim 1, 2, or 3.   An existing pipe human hole connection part is seismic-proofed and is intended to make the existing pipe human hole connection part seismic resistant, which is connected to the pipe hole of the peripheral wall of the human hole. Cutting the end of the existing pipe fitted into the pipe hole within a range not exceeding the outer peripheral wall surface from the inner peripheral wall surface side of the peripheral wall of the human hole, and the inner peripheral wall of the human hole, Fixing a cylindrical auxiliary member having the same inner diameter as the pipe hole coaxially with the pipe hole, and cutting off the existing pipe in the pipe hole on the inner periphery of the cylindrical auxiliary member and the peripheral wall of the human hole; A step of providing an elastically deformable elastic water-stop tubular portion having a thickness substantially equal to the thickness of the existing pipe on the inner wall of the existing portion, and a lining pipe disposed on the inner periphery of the existing pipe and the elastic water-stop tubular portion A seismic retrofitting method for an existing pipe manhole connection, characterized in that   An existing pipe human hole connection part is seismic-proofed and is intended to make the existing pipe human hole connection part seismic resistant, which is connected to the pipe hole of the peripheral wall of the human hole. Cutting the end of the existing pipe fitted into the pipe hole within a range not exceeding the outer peripheral wall surface from the inner peripheral wall surface side of the peripheral wall of the human hole, and an inner diameter of the same diameter as the pipe hole Provided on the inner periphery of the cylindrical auxiliary member having an elastically water-stopping tubular portion having a thickness substantially equal to the wall thickness of the existing pipe, and the elastic water-stopping tubular portion from the end surface of the cylindrical auxiliary member. A length corresponding to a portion of the peripheral wall of the human hole in which the existing pipe is cut off is protruded, and the elastic water-stop tubular portion protruding from the end surface of the cylindrical auxiliary member is formed on the peripheral wall of the human hole. The tubular auxiliary member is inserted into the inner peripheral wall of the human hole and inserted into a portion of the tube hole where the existing pipe is cut off. And fixing coaxially, earthquake resistance method of the existing pipe manhole connecting portion which comprises a step of placing a lining pipe into an inner circumference of said existing pipe and said resilient waterproofing tubular portion.   An existing pipe human hole connection part is seismic-proofed and is intended to make the existing pipe human hole connection part seismic resistant, which is connected to the pipe hole of the peripheral wall of the human hole. Cutting the end of the existing pipe fitted into the pipe hole within a range not exceeding the outer peripheral wall surface from the inner peripheral wall surface side of the peripheral wall of the human hole, and the inner peripheral wall of the human hole, Fixing a cylindrical auxiliary member having the same inner diameter as the pipe hole coaxially with the pipe hole, and cutting off the existing pipe in the pipe hole on the inner periphery of the cylindrical auxiliary member and the peripheral wall of the human hole; A step of providing a cylindrical temporary frame having a thickness substantially equal to the thickness of the existing pipe on the inner wall of the portion, a step of arranging a lining pipe on the inner periphery of the existing pipe and the cylindrical temporary frame, and After arranging the lining pipe on the inner circumference of the pipe and the cylindrical temporary frame, the pipe hole on the inner circumference of the cylindrical auxiliary member and the peripheral wall of the human hole A step of removing a cylindrical temporary frame provided on an inner wall of a portion where the existing tube is cut off, and an inner portion of the cylindrical auxiliary member and a portion of the tube hole of the peripheral wall of the human hole where the existing tube is cut off And a step of providing an elastic water-resistant tubular portion that can be elastically deformed in a space obtained by removing the cylindrical temporary frame from the inner wall.   The cylindrical auxiliary member is formed in a substantially conical shape or a pyramid shape so that an outer diameter gradually decreases toward the open end. , 5, 6 or 7. Seismic retrofitting method for existing pipe manhole connection.

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