JP5501664B2 - Seismic waterproof structure for existing pipes - Google Patents

Description

  The present invention relates to an anti-seismic structure for existing pipelines regenerated by providing a continuous lining layer in the laying direction on the inner peripheral surface, and in particular, guide joints are provided at the connection between underground structures including manholes and existing pipelines. The present invention relates to an anti-seismic water-proof structure that achieves seismic resistance by forming and secures water-stopping properties by closing gaps in the lining layer that is open to the guide joint.

  In the ground, pipes for sewerage and wiring where high pressure does not act on the inside, such as pipes for industrial water and agricultural water where high pressure acts on the inside, etc. Various pipe lines are laid. In such pipes, in the event of an earthquake or when land subsidence occurs in the laying site, the pipes are refracted and include pipes that are continuously embedded in the horizontal direction or bent by bending. Misalignment may occur and cracks and delamination may occur in the tube. And when a pipe | tube shift | offset | difference and a crack generate | occur | produce, there exists a possibility that groundwater and earth and sand may permeate into a pipe line through these parts, or a tree root may enter. In addition, when high pressure is applied to the pipeline, such as an industrial channel or an agricultural channel, the flowing water leaks into the ground through a portion or crack.

  For example, a pipe line constituting a sewer is configured by continuously burying a fume pipe in the ground. A large number of manholes serving as underground structures are installed in this pipe line, and the end of the fume pipe is connected to the side wall of the manhole. Sewerage pipes are basically flown down naturally and are laid with a water gradient, and manholes are installed almost vertically. For this reason, the axial direction of a pipe line and the axial direction of a manhole will be substantially orthogonal.

  In the case of a pipeline laid without considering earthquake resistance, the end of the pipeline is firmly connected to the manhole. For this reason, for example, during ground subsidence or an earthquake, a force that tries to pull out from the manhole in the laying direction (axial direction) to the fume tube connected to the manhole, or a force that tries to rotate starting from the connection with the manhole acts To do. Then, each of the forces acts on the connecting portion between the manhole and the fume tube, and the connecting portion between the manhole and the fume tube may be broken or broken.

  However, the position at which the crack is generated is not managed, and there is a problem that whether or not the crack is generated cannot be recognized unless the periphery of the connection portion between the manhole and the fume tube is searched. This problem occurs not only in the connection part where the fume pipe is connected to the manhole, but also in the connection part where the fume pipe is connected to an underground structure other than the manhole, such as an underground water tank. That is, such a problem is caused by the connection part where the fume pipe constituting the pipe line is connected to the rigid underground structure or the underground structure laid across the axial direction of the pipe line. Occurs at the connecting part.

  For this reason, the present applicant has developed and proposed the technique described in Patent Document 1. In this technique, a guide joint is formed on the inner peripheral surface of the connection portion to the manhole of the pipe, the guide joint is covered with an annular sheet member, pressed with a sleeve, and further fixed with a cover. In this technique, cracks and damage that occur when a force is applied to the pipeline can be guided to the induction joint, and therefore, a site where the crack occurs can be identified without exploring the inside of the pipeline. In addition, since the guide joint can be sealed by the annular sheet member, the groundwater that has entered the guide joint through the crack does not permeate into the pipe, and the flowing water in the pipe does not leak into the soil.

  Further, in the technique of Patent Document 1, when a crack is generated in the induction joint by loading the induction joint with a sealing member made of a synthetic resin filler or a rubber ring, the portion where the crack is generated is determined. It is configured to seal and secure water tightness and to repair the part.

  On the other hand, in the pipeline after laying, the inner peripheral surface deteriorates with time. For this reason, a continuous lining layer is formed inside a deteriorated pipe line to cover and regenerate the deteriorated inner peripheral surface. As a method of regenerating by forming a lining layer on the inner circumference of a deteriorated pipe line, a method using a long lining material provided with fitting parts along both sides in the width direction, fitting along both sides in the width direction A construction method using a long lining material provided with a joint and a long fitting member, a construction method using a plurality of arc-shaped lining materials having a diameter smaller than the inner diameter of the pipe, and flexibility. It is common to selectively employ a construction method using a sleeve having the same.

  For example, in the case of a construction method using a long lining material, one manhole is formed by spirally winding this lining material and fitting one fitting portion provided on both sides in the width direction to the other fitting portion. To the other manhole. Then, the lining material wound in a spiral shape is brought into contact with the lower side of the inner peripheral surface of the pipe, and in this state, a backing material is filled between the inner peripheral surface of the pipe and the lining material to form a lining layer. Form. This lining layer is formed continuously between adjacent manholes and is configured as if it were a single tube.

  In the case of a construction method using a long lining material and a long fitting member, the lining material is wound around the lining material in a spiral manner, and the fitting member is arranged in the gap so that the width of the lining material is reduced. The fitting portion provided on both sides in the direction and the fitting portion provided on the fitting member are fitted and connected to each other while being inserted from one manhole toward the other manhole. Then, the spirally wound lining material and the fitting member are brought into contact with the lower side of the inner peripheral surface of the pipe line, and in this state, the gap is inserted between the inner peripheral surface of the pipe line and the lining material and the fitting member. Fill the material to form a lining layer. This lining layer is formed continuously between adjacent manholes and is configured as if it were a single tube.

  In the case of a method using a plurality of arc-shaped lining materials, a short cylinder is formed by connecting the arc-shaped lining materials in the circumferential direction and fixing them with bolts and nuts. Connected in the extending direction to form a continuous tube made of a plurality of arc-shaped lining materials. The officer is brought into contact with the lower side of the inner peripheral surface of the pipe line, and in this state, a backing agent is filled between the inner peripheral surface of the pipe line and a lining layer is formed.

  In the case of a construction method using a flexible sleeve, a flexible sleeve impregnated with a thermosetting resin or a photocurable resin is inserted from one side of two adjacent manholes to the other side. . Thereafter, the sleeve is expanded and brought into contact with or close to the inner peripheral surface of the pipe line, and this state is maintained and the sleeve is cured by irradiation with heat or light to form a lining layer. This lining layer is formed continuously between adjacent manholes, and the adjacent manholes are connected by a single tube constituting the lining layer.

JP 2006-144229 A

  In the technique of Patent Document 1, it is possible to make the connection portion with the manhole in the pipeline earthquake resistant. However, it has been found that when this technique is applied to a pipe line having a lining layer formed on the inner periphery, a problem of water stoppage occurs. That is, the sealing member loaded in the induction joint in advance, when a crack occurs in the induction joint, seals the portion where the crack is generated to ensure watertightness and repairs the portion where the crack is generated. It is. However, as the crack is generated in the induction joint, a crack is formed in the sealing member, or it is separated from the side wall of the induction joint, and it is difficult to prevent the sealing joint from being flooded with the sealing joint. .

  In particular, in the technique of Patent Document 1, it is essential to form a guide joint made of a groove in the thickness direction in a pipe constituting the pipe line. When applied to a pipe line in which a lining layer is formed, the guide joint is a lining. The layer will be cut. For this reason, the lining layer and the seam between the lining layer and the inner peripheral surface of the pipe are exposed on the side surface of the induction joint. Thus, there is a problem that the lining layer may be submerged.

  In the case of a conventional method using a long lining material, a method using a long lining material and a long fitting member, and a method using a plurality of arc-shaped lining materials, the width direction of the lining material The end portions or the end portions in the width direction of the lining material and the end portions in the width direction of the fitting members are connected. In each of the above methods, a fitting part and a connection part are formed at the end of the lining material in the width direction, and the fitting part and the connection part become discontinuous parts of the lining material and the extension direction of the pipe line and Constructed in the circumferential direction. Further, the fitting portion and the connecting portion are formed with a gap corresponding to the lining material connection method (fitting method, butting bolt joining method, etc.), and this gap is configured along the discontinuous portion of the lining material. It will be.

  For example, in the case of a lining layer formed by spirally winding a long lining material, when fitting portions formed on both sides in the width direction of the lining material are fitted to each other, a gap is formed between the two. The This gap is opened to the side surface of the guide joint at a length corresponding to the lead angle, and when the guide joint is submerged, the entire length of the lining layer passes through the gap formed in the fitting portion from the gap where the water is released. There is a risk of penetration.

  Further, in the above lining material, a fin-like piece is provided over the entire length at one end in the width direction, and a hook is provided over the entire length on the other end side, and the fin-like piece is used as a hook when spirally wound. A firm fit is achieved by locking. In this structure, a cylindrical space whose periphery is closed by fin-shaped pieces and hooks is formed in the lining layer over the entire length and adjacent to the gap of the fitting portion. This space is not filled with a backing material, and forms a gap between the lining layers to constitute a water supply. Accordingly, the gap formed by the space is opened to the side surface of the guide joint, and when the guide joint is submerged, there is a possibility that the water may permeate the entire length of the lining layer from the opened gap.

  Further, in the case of a lining layer using a long lining material and a long fitting member, a gap is formed in the fitting portion between the lining material and the fitting member, and this gap serves as water supply. In addition, an expansion / contraction portion formed in a bellows shape to allow expansion / contraction in the width direction of the fitting member is formed at substantially the center in the width direction of the fitting member. This stretchable part is not filled with a backing material, exists as a space formed over the entire length of the lining layer, and constitutes a gap between the lining layers to constitute water supply. Accordingly, the gap formed by the space is opened to the side surface of the induction joint, and when the induction joint is submerged, there is a possibility that the groom extends over the entire length of the lining layer from the gap where the water is released.

  Furthermore, in the case of a lining layer formed by continuously arranging a plurality of arc-shaped lining materials in the circumferential direction and the axial direction, the connection portion in the circumferential direction and the axial direction of the arc-shaped lining material becomes a discontinuous portion. A slight gap is formed in the discontinuous portion. Therefore, the gap formed in the discontinuous portion of the arc-shaped lining material is opened to the side surface of the induction joint, and when the induction joint is submerged, the water penetrates over the entire length of the lining layer from the opened gap. There is a fear.

  As described above, when the lining layer is formed by connecting lining materials, a discontinuous portion having a gap is formed in the connecting portion. For this reason, the gap of the discontinuous portion is inevitably opened to the side surface of the guide joint, and when the guide joint is submerged, there is a possibility that water may penetrate into the lining layer through the opened gap.

  Further, when a construction method using a flexible sleeve is employed, the backing material is not filled between the outer peripheral surface of the lining material and the inner peripheral surface of the pipe line. For this reason, a gap may be formed between the two, and when this gap is exposed on the side surface of the induction joint, there is a possibility that when the induction joint is submerged, water penetrates into the lining layer through the gap.

  It is an object of the present invention to allow water intrusion to the induction joint to permeate into the gap even when the gap formed between the lining layer or the lining layer and the inner peripheral surface of the pipe is open to the side face of the induction joint. It is to provide an earthquake-proof structure for existing pipes that never happens.

In order to solve the above problems, an earthquake-proof structure for an existing pipeline according to the present invention is an earthquake-proof structure for an existing pipeline laid in the ground, and is formed on the inner peripheral surface of the existing pipeline. A lining layer that regenerates an existing pipeline, and is formed at a predetermined position of the existing pipeline over the entire circumference on the inner peripheral surface of the existing pipeline, crossing the lining layer in the thickness direction and formed in the thickness direction of the pipe A guide joint composed of a groove, a width greater than the width of the guide joint, and a flexible member disposed opposite the guide joint to close the guide joint; and A support member that presses and supports the lining layer, and the lining layer has a discontinuous portion that constitutes a gap of the lining layer along the extending direction of the existing pipeline, and the guide joint is By being formed across the lining layer, the front Discontinuity is opened to the side of the induction joint to form a gap between the lining layer, the closing member comprising a flowable water stopping material which exhibits and over time cure to water cut has fluidity in the gap The gap is closed by filling the container .

In the seismic waterproof structure of the existing pipe, the inner circumference of the lining layer is located in the vicinity of the induction joint in the extension direction of the existing pipe and at a position corresponding to the discontinuous portion constituting the gap of the lining layer. Forming a hole reaching the gap from the surface side, injecting a blocking member made of a fluid water-stopping material that has the fluidity and cures with time through the hole to exhibit water-stopping , the discontinuity It is preferable to close the gap of the lining layer formed by opening the portion to the side surface of the induction joint.

Further, in the seismic waterproofing structure of the existing pipe line, the lining layer is formed of a long lining material provided with fitting portions along the longitudinal direction on both sides in the width direction. The fitting portion provided on the other side is fitted to the fitting portion provided on the other side or is fitted via a long fitting member to cover the inner peripheral surface of the existing pipe in a spiral shape. It is preferable that

Further , another seismic waterproof structure of an existing pipe according to the present invention is an earthquake-proof construction of an existing pipe laid in the ground, and is formed on the inner peripheral surface of the existing pipe. And a groove formed in an inner peripheral surface of the existing pipe line at a predetermined position over the entire circumference at a predetermined position of the existing pipe line, traversing the lining layer in the thickness direction and formed in the pipe thickness direction. An induction joint, a width greater than the width of the induction joint, and a flexible member that is disposed opposite the induction joint and closes the induction joint, and the closure member is disposed on the lining layer. A supporting member that supports the lining layer by pressing, and the lining layer has a discontinuous portion that constitutes a gap of the lining layer along an extending direction of the existing pipe line, and the induction joint is the lining layer. The discontinuities are formed by crossing Is opened to the side of the induction joint to form a gap between the lining layer, it should be placed in closure member comprising a water stopping material that exhibits a water cut and swollen by the action of water to the induction joint, water to the induction joint It is configured to be able to close a gap between the lining layers which are swollen and opened to the side surfaces of the induction joint when the osmosis penetrates.

  In the seismic waterproofing structure of the existing pipe line, the lining layer is provided with a long lining material provided with fitting portions along the longitudinal direction on both sides in the width direction on one side in the width direction. The inner fitting surface of the existing pipe is covered in a spiral manner by fitting the fitting portion to the fitting portion provided on the other side, or via a long fitting member. It is preferable that

  In the present invention, the gap between the lining layers opened to the side surface of the induction joint is not limited to the gap formed in the lining layer itself, but the inner peripheral surface of the lining layer and the existing pipe line. In the case where the lining layer is formed by laminating a plurality of lining materials, it is formed between the lining layers and opened to the side surface of the induction joint. It also includes gaps. Further, in the case where peeling occurs on the inner peripheral surface of the pipe constituting the existing pipeline, this peeling portion is also included.

  Further, closing the gap of the lining layer opened to the side surface of the induction joint by the closing member is not necessarily limited to directly closing the gap of the lining layer opened to the side surface of the induction joint by the closing member. Absent. That is, in the case where the gap is formed continuously in the lining layer, the gap includes a structure capable of preventing infiltration from the induction joint by closing in the vicinity of the induction joint.

  In the seismic waterproof structure according to the present invention, the existing pipe line which is regenerated by forming a lining layer on the inner periphery can be made seismic resistant and water-proofing can be secured. Since the induction joint is formed across the lining layer in the thickness direction of the pipe, when an excessive force is applied during subsidence or an earthquake, this force concentrates on the induction joint and causes cracks in the pipe. In this way, existing pipes can be made earthquake resistant. Further, by closing the gap between the lining layers opened to the side surface of the induction joint with the closing member, even when the induction joint is submerged, the water does not permeate through the gap.

  In the present invention, the lining layer has a discontinuous portion constituting a gap between the lining layers. For this reason, even if a discontinuous part is open | released by the side surface of a guidance joint and a clearance gap is formed, it can be obstruct | occluded by filling a clearance gap with a clearance gap. Therefore, even if the induction joint is submerged, water does not penetrate into the lining layer.

  In particular, when a hole reaching a gap that may become water supply is formed in the vicinity of the induction joint, and the fluidized water stop material is filled into the fitting portion through this hole, the width dimension of the induction joint is Even if it is small, it can work reliably and water permeation into the gap can be prevented.

  In addition, fitting parts are formed on both sides in the width direction of the lining material, and the fitting part formed on one side is fitted to the fitting part formed on the other side while winding this lining material in a spiral shape. While covering the inner peripheral surface of the existing pipe line or winding a lining material with fitting portions formed on both sides in the width direction in a spiral shape with a gap in the width direction, a fitting member is placed in this gap. At the same time, the fitting member is fitted into the fitting portion of the lining material to cover the inner peripheral surface of the existing pipeline. For this reason, gaps such as a cut surface of the fitting portion, a space adjacent to the fitting portion, and a space formed in the fitting member are exposed and opened on the side surface of the guide joint. When the guide joint is submerged, the water does not penetrate through the fitting portion.

  When the blocking member is a water-stopping material that expands due to the action of water and exhibits water-stopping properties, it is easy to place it inside the induction joint.

It is a figure explaining the whole structure of the earthquake-proof water stop structure concerning a 1st example. It is a figure explaining the principal part of the earthquake-proof waterproof structure which concerns on 1st Example. It is a figure explaining the state which the latching protrusion fitted to the fitting recessed part formed in the lining material. It is a figure which illustrates typically the clearance gap open | released by the side surface of the guidance joint, and is IV arrow line view of FIG. It is a figure which illustrates typically the principal part of the earthquake-proof waterproof structure which concerns on 2nd Example. It is a figure which illustrates typically the principal part of the earthquake-proof water stop structure concerning a 3rd example. It is a figure which illustrates typically the principal part of the earthquake-proof water stop structure concerning a 4th example. It is a figure which illustrates typically the earthquake-proof water stop structure concerning a 5th example. It is a figure which illustrates typically the principal part of the earthquake-proof waterproof structure which concerns on 6th Example.

  Hereinafter, the embodiment of the earthquake-proof waterproof structure of the present invention will be described. The earthquake-proof structure according to the present invention is an existing pipe line that is laid in the ground and has a lining layer formed on the inner periphery in order to repair deterioration over time. It is made earthquake resistant and gives water stop.

  That is, a guide joint is formed at a predetermined position of an existing pipeline to form a low-strength portion, and a force acting on the existing pipeline is concentrated on the guide joint, leading to cracks etc. ahead of other sites. It is possible to prevent the existing pipeline from being damaged in an unmanaged state. Then, by inducing damage to a specific part in the existing pipe line, the other pipe part is prevented from being damaged, thereby making the whole pipe line earthquake resistant.

  Further, it is possible to close the induction joint by disposing the closing member so as to face the induction joint and pressing and supporting the closing member on the lining layer by the support member. By closing the guide joints in this way, leakage of groundwater that has entered through cracks generated in the guide joints is prevented from leaking into the existing pipelines, or water flowing through the existing pipelines enters the guide joints. It is possible to prevent.

  In the earthquake-proof waterproof structure according to the present invention, the guide joint is formed by dividing the lining layer in the thickness direction along the circumference. For this reason, the gap which the lining layer itself exposed to the side surface of the induction joint, or the gap formed between the inner peripheral surface of the pipe constituting the pipe line and the lining layer becomes water, and the induction joint is submerged. Sometimes there is a risk of water penetration. Accordingly, by directly or indirectly closing the gap opened to the induction joint by the closing member, even if the induction joint is submerged, this water is prevented from penetrating through the water supply, thereby providing water stoppage. Is.

  In the present invention, the use of the existing pipe line is not particularly limited, and a pipe for sewerage, a line for wiring, or a line for agricultural water in which a large number of pipes are continuously laid in the ground. And can be applied to pipes for industrial water. In particular, the present invention can be preferably applied to a pipeline in which the end of the pipeline is connected to a straight wall of an underground structure such as a manhole or a processing facility.

  Also, the structure, material, and pipe diameter of the pipes that make up the existing pipe line are not limited, and are existing pipe pipes made of pipes such as fume pipes, ceramic pipes, concrete pipes, etc. It is possible to apply to existing pipelines in the range of about 200 mm to 3000 mm.

  The structure of the lining layer formed on the inner peripheral surface of the existing pipeline and regenerating the existing pipeline is not particularly limited as long as it can regenerate the deteriorated inner peripheral surface of the existing pipeline. As such a lining layer, the lining material is spirally wound to form a tubular shape and installed inside the existing pipeline, and a backing material is provided between the tubular lining material and the inner peripheral surface of the existing pipeline. Some are filled and integrated. Further, a plurality of arc-shaped lining materials are connected in the circumferential direction to form a cylindrical pipe, and this pipe is connected to the extension direction of the existing pipe line and installed inside the existing pipe line. There is also one in which a backing material is filled and integrated between the inner peripheral surface of the existing pipe line. Further, there is a case in which a sleeve-like lining material having flexibility is brought into contact with the inner peripheral surface of an existing pipe line and cured. The present invention can be applied to any of the above lining layers.

  In particular, the seismic waterproof structure of the present invention is preferably applied to a lining layer having a structure in which a gap may be opened in a cut surface when a pipe constituting the lining layer and an existing pipe line is cut in the thickness direction. Is possible. Thus, as a lining layer in which a gap may be opened in a cut surface, there is a layer formed using a lining material having a discontinuous portion that constitutes a gap that is difficult to seal with itself. In addition, there are some which are formed by using a lining material which does not have a gap in itself but in which a gap may be formed between the inner peripheral surface of a pipe constituting an existing pipe line.

  The guide joint is constituted by a groove formed in the thickness direction of the pipe that forms the existing pipe line by traversing the lining layer in the thickness direction. The depth of the groove constituting the induction joint (the remaining thickness of the pipe) is not particularly limited, and is preferably set as appropriate according to conditions such as the material and diameter of the pipe.

  For example, when the pipe constituting the existing pipe line is a fume pipe having a reinforcing bar, the depth of the guide joint is preferably set on the outer peripheral surface side with respect to the bar arrangement portion of the vertical bars. Thus, since there is no reinforcing bar in the remaining part of the pipe, it is possible to reduce the strength of the pipe at the induction joint and to generate cracks more reliably than other parts.

  Further, the width dimension and shape of the induction joint are not particularly limited, and are preferably set appropriately in consideration of workability. As the shape of the guide joint, the cross section may be a polygonal shape including a triangle or a quadrangle.

  The formation position of the guide joint in the existing pipe line is not particularly limited, but is preferably in the vicinity of a connection part with an underground structure including a manhole (hereinafter, representatively referred to as “manhole”). For example, it is particularly preferable that the guide joint is formed at a position of about 500 mm from the end of the pipe connected to the manhole.

  That is, the existing pipe line is configured by connecting pipes arranged at both ends to two adjacent manholes. Since the manhole laying direction and the existing pipe line laying direction are substantially orthogonal, for example, when a force is applied to the manhole and the existing pipe line during an earthquake, the connecting part between the manhole and the existing pipe line is compared to other parts. Therefore, a force in a complicated direction is applied. For this reason, by forming the induction joint in the vicinity of the connection portion with the manhole, it is possible to reliably concentrate the acting force on the induction joint and cause cracks in the induction joint.

  The closing member has a function of closing the guide joint and preventing water leakage into the existing pipeline when the guide joint is submerged. For this reason, as long as it can exhibit the said function, it is possible to employ | adopt and it does not specifically limit a structure. As such a closing member, a cylindrical member having substantially the same diameter as the inner diameter of the lining layer made of rubber or flexible synthetic resin can be used.

  For example, the pipe may be displaced in the axial direction starting from a crack generated in the induction joint. It is preferable that the closing member has a width dimension enough to allow the deviation even when the axial deviation occurs in the tube.

  The support member has a function of pressing and supporting the closing member against the lining layer. For this reason, as long as it can exhibit the said function, it is possible to employ | adopt and it does not specifically limit a structure. As such a support member, it is possible to use a sleeve-like member having a width substantially equal to or larger than the width dimension of the closing member and configured to change the diameter. Then, the sleeve-like member is disposed on the inner peripheral surface of the closing member, and the sleeve-like member can be supported by enlarging the diameter of the sleeve-like member and pressing the closing member against the lining layer.

  In particular, the covering for repair described in Japanese Patent Application Laid-Open No. 2003-130282 filed by the applicant of the present application can be preferably used as the above-described closing member and supporting member.

  The closing member has a function of closing the gap between the lining layers opened to the side surface of the induction joint, and any member that can exhibit this function can be used. As described above, as a material that can exhibit the function of closing the gap, a fluid water-stopping material (hereinafter referred to as “sealing material”) that is fluid in the initial state and hardens with time, or swells by the action of water. Thus, there is a water stop material (hereinafter referred to as “water stop material”) that closes the gap. And it is possible to use the said sealing material and a water stop material individually or in combination according to the shape and property of the clearance gap of the lining layer open | released at the side surface of the induction joint, respectively.

  In the present invention, as the sealing material, it is sufficient if it has fluidity in the initial state and is cured with time to close the gap, thereby preventing water penetration. It does not matter how long it takes to cure from the state. Examples of such seal materials include one-pack type seal materials and two-pack type seal materials, and seals such as foamed mortar and foamed urethane that have fluidity in the initial state and expand and expand in the course of curing over time. There are materials, and these sealing materials can be selectively used.

  Further, any water-stopping material may be used as long as it can swell due to the action of water and exhibit water-stopping properties. Such water-stopping materials include water-stopping materials such as swollen rubber, and these can be selectively employed.

  The shape and nature of the gap of the lining layer that opens to the side surface of the induction joint differ depending on the shape and method of the lining material that constitutes the lining layer. For example, in a lining layer that uses a long lining material with fitting parts formed on both sides in the width direction, the fitting part becomes a discontinuous part, and the fitting part can be easily fitted and fitted. A gap is inevitably formed in order to be wound in a spiral shape. Then, when the backing material is filled between the lining material and the inner peripheral surface of the existing pipe line, the filled backing material does not enter the gap, and the state of the gap is maintained.

  Since the lining material is spirally wound around the inner peripheral surface of the existing pipeline, the wound lining material has a lead angle with respect to the existing pipeline. On the other hand, since the guide joint is formed in a direction perpendicular to the axis of the existing pipe line, the lining material intersects with the guide joint with a lead angle, and the fitting portion has an arc shape on the side surface of the guide joint. Will be exposed. For this reason, the clearance gap currently formed in the fitting part will be open | released by the side surface of an induction joint, and this clearance gap will become the continuous water supply over the full length of a lining layer.

  A lining layer formed using a long lining material is filled with a backing material such as mortar over the entire length between the lining material and the inner peripheral surface of the existing pipe line. At this time, depending on the cross-sectional shape of the lining material that is wound in a spiral shape and fitted, a cylindrical space that becomes a continuous gap may be formed without being filled with the backing material.

  For example, in the lining material, a fin provided at one end in the width direction is engaged with a hook provided at the other end in order to strengthen the fitting of the fitting portion. In this case, a cylindrical space serving as a gap is formed by the engagement between the fin and the hook, and this gap is opened to the side surface of the induction joint to serve as a water supply for the lining layer. As described above, a gap having an area larger than the gap in the fitting portion is formed according to the shape of the lining material, and this gap may constitute a water supply extending over the entire length of the lining layer.

  Further, when the lining material is a flexible sleeve impregnated with a thermosetting resin or a photo-curable resin, the lining material is cured while being in contact with the inner peripheral surface of the existing pipe line. However, it cannot guarantee that the lining material is in close contact with the inner peripheral surface of the existing pipe line, and a continuous or discontinuous gap may occur between the two. In this case, an intermittent gap is opened on the side surface of the guide joint between the inner peripheral surface of the existing pipe line and the lining material, and there is a possibility that this gap constitutes the water supply of the lining layer.

  Therefore, it is necessary for the closing member to reliably close the gap opened on the side surface of the induction joint as described above. Even if the gap is closed by the closing member, Can be prevented from penetrating into the lining layer.

  For example, when a sealing material is used as the closing member, it is possible to directly fill a gap opened on the side surface of the induction joint. In addition, a hole that leads to the gap is formed at a position that is spaced apart from the guide joint in the lining layer in the direction in which the existing pipe line is laid and that is continuous with the gap that is open on the side surface. It is also possible to indirectly close the gap opened on the side surface of the induction joint by filling the sealing material through this hole.

  In particular, when a cylindrical space that is a continuous gap without being filled with a backing material is formed, in addition to the hole that leads to the gap, a hole that leads to the space is also formed, It is also possible to indirectly close the gap opened on the side surface of the induction joint by filling the gap and space with the sealing material through the hole.

  In addition, when using a water-stopping material as the closing member, the water-stopping material is formed in a ring shape having dimensions corresponding to the inner and outer diameters of the induction joint, and the water-stopping material is arranged on the induction joint. When the induction joint is submerged, the water stop material swells by the action of this water, and the gap opened to the side surface can be closed.

  A first embodiment of the earthquake-proof structure according to the present invention will be described with reference to FIGS. As shown in FIG. 1, the anti-seismic structure A is configured in the vicinity of a site where the existing pipe line B is connected to the manhole C. In particular, the earthquake-proof structure A is provided at both ends of the existing pipeline B laid by connecting the adjacent manholes C, and cracks according to the force acting during subsidence and the force acting during an earthquake. And the groundwater that has entered through the cracks is prevented from penetrating.

  In this embodiment, the existing pipeline B includes a pipe 1 constituting the existing pipeline B, a lining layer 2 formed by spirally winding the lining material 3 around the inner peripheral surface of the existing pipeline B, It is comprised. The said pipe | tube 1 is comprised by the fume pipe | tube, and the existing pipe line B is comprised by connecting the several pipe | tube 1 continuously in a longitudinal direction.

  The lining material 3 constituting the lining layer 2 is configured as a long member having a preset width dimension. A locking projection 3a constituting a fitting portion on one side in the width direction of the lining material 3 and a fitting recess 3b constituting a fitting portion on the other side and fitting the locking projection 3a in the longitudinal direction, respectively. Are formed along. In addition, a plurality of ribs 3c are formed between the fitting recess 3b and between the fitting recess 3b and the locking projection 3a. The rib 3c is provided with a contact piece 3d that contacts the inner peripheral surface of the tube 1 at the tip. . Further, a fin 3f is formed on the free end side of the fitting recess 3b. The fin 3f is bent in the direction of the contact piece 3d and engages with a hook formed by the rib 3c adjacent to the locking projection 3a and the contact piece 3d. ing.

  The fitting recess 3b is formed to have a size larger than the size of the locking projection 3a so that the locking projection 3a can be easily fitted and can be easily wound spirally in the fitted state. ing. For this reason, when the latching protrusion 3a is fitted to the fitting recess 3b, a gap 4 is formed between them. Accordingly, the gap 4 is formed over the entire length of the lining layer 2.

  Then, the locking projection 3a is fitted into the fitting recess 3b, and the fin 3f is engaged with a hook formed by the rib 3c adjacent to the locking projection 3a and the contact piece 3d, thereby locking the projection 3a. The inner peripheral surface of the existing pipeline B is covered by winding the lining material 3 in a spiral shape while maintaining the fitted state of the fitting recess 3b. For this reason, a substantially triangular space is formed over the entire length of the lining layer 2 by the ribs 3 c and the fins 3 f, and this space constitutes the gap 4.

  As described above, the winding angle (spiral lead angle) of the lining material 3 covering the inner peripheral surface of the existing pipeline B varies depending on the width dimension of the lining material 3 and the inner diameter of the tube 1, but about 5 It is in the range of about ° to about 15 °. However, it is natural that the angle range may be exceeded.

  When the lining material 3 is wound in a spiral shape to form a tubular shape, the outer diameter (the diameter including the contact piece 3d) is generally smaller than the inner diameter of the tube 1 in construction. For this reason, when the spirally wound lining material 3 is installed in the existing pipe B, the abutment piece 3d of the rib 3c on the lower side of the lining material 3 is in contact with the lower inner peripheral surface of the pipe 1. The contact pieces 3d on both sides and the upper part are separated from the inner peripheral surface of the tube 1. For this reason, a gap is formed between the lining material 3 and the inner peripheral surface of the pipe 1. The lining layer 2 is formed by filling the gap with a backing material 5 such as mortar.

  In the lining layer 2 configured as described above, the end edge 3e on the locking projection 3a side formed on the lining material 3 on the inner peripheral surface is exposed spirally. The edge 3e is an edge on the end side where the locking projection 3a of the lining 3 is provided. For this reason, the gap 4 formed between the fitting recess 3b and the gap 4 formed between the rib 3c and the fin 3f when the locking projection 3a is fitted to the fitting recess 3b is the edge. 3e may be connected. And when water penetrate | invades into each said clearance gap 4, there exists a possibility that this water may leak in the existing pipe line B along the edge 3e.

  An induction joint 10 having a rectangular cross section composed of opposite side surfaces 10a and 10b and a bottom surface 10c is formed in the thickness direction of the tube 1 while traversing the lining layer 2 in the thickness direction. In the present embodiment, the width of the guide joint 10 is about 5 mm to 10 mm, and the diameter of the bottom surface 10c in the tube 1 is set to a size capable of cutting the longitudinal bars arranged in the tube 1. ing. Therefore, the remaining thickness of the pipe 1 due to the formation of the guide joint 10 corresponds to the position where the vertical streaks are embedded in the pipe 1.

  Since the induction joint 10 is formed across the lining layer 2, the lining material 3, the backing material 5, and the pipe 1 constituting the lining layer 2 are continuously exposed on the side surfaces 10 a and 10 b of the induction joint 10. . In particular, since the lining material 3 is spirally wound around the inner peripheral surface of the pipe 1, the lining material 3 crosses the guide joint 10 obliquely.

  For this reason, the gap 4 formed between the fitting recess 3b and the locking projection 3a and the gap 4 formed by the rib 3c and the fin 3f are opened on the side surfaces 10a and 10b of the guide joint 10, respectively. The The gaps 4 opened to the side surfaces 10a and 10b of the guide joint 10 are closed by the sealing material 11 serving as a closing member. Thus, even when the guide joint 10 is submerged, the water is separated into the gaps. 4 is prevented from penetrating into the lining layer 2.

  In the present embodiment, the construction method when the gaps 4 opened to the side surfaces 10a and 10b of the guide joint 10 are closed by the sealing material 11 is not particularly limited. For example, the sealing material using a spatula is used. It is possible to infiltrate and close by applying 11 to each gap 4. Further, by inserting a filler that fills the inside of the induction joint 10 with a fluid sealant 11 and filling the inside of the induction joint 10 with this filler, each gap 4 opened to the side surfaces 10a and 10b. Alternatively, the sealing material 11 can be filled. The operation of closing the gaps 4 opened to the side surfaces 10a and 10b by the sealing material 11 is appropriately selected according to conditions such as the width dimension of the guide joint 10 and the size of the gaps 4. preferable.

  In particular, when the width dimension of the induction joint 10 is small, it is advantageous to close the gaps 4 by pressurizing and filling the sealing material 11 into the induction joint 10. In this case, the opening portion of the guide joint 10 into the existing pipeline B is closed with a jig, and in this state, the sealing material 11 is filled with a pressure filling tool such as a pressure gun, for example. 11 can be filled in each gap 4 and closed. In addition, when a material having a slightly expandability is used as the sealing material 11, the sealing material 11 is filled in the induction joint 10, and at the same time, the expansion is started, and the sealing material 11 is put in each gap 4 by the pressure during the expansion. It penetrates and it becomes possible to realize reliable blockage.

  A closing member 12 is disposed opposite to the guide joint 10, and the closing member 12 is pressed against and supported by the lining layer 2 by a support member 13. With this configuration, the guide joint 10 is closed, and even if groundwater enters the guide joint 10 and the inside of the guide joint 10 reaches a pressure equal to the groundwater pressure, water leaks into the existing pipeline B. There is no.

  The closing member 12 has a width dimension (for example, 300 mm) that is sufficiently larger than the width dimension of the guide joint 10 and is configured to allow a slight positional deviation when arranged facing the guide joint 10. ing. For this reason, even if a crack occurs in the induction joint 10 and the pipe 1 is displaced in the axial direction from the induction joint 10, the deviation of the pipe 1 can be allowed.

  Further, the closing member 12 is formed in a sleeve shape made of flexible rubber or synthetic resin, and a plurality of protrusions 12a are formed at both end portions in the width direction on the outer peripheral surface. When the ridge 12a is pressed against the inner peripheral surface of the lining layer 2, the ridge 12a is deformed and the guide joint 10 can be reliably closed.

  The support member 13 is configured by connecting a plurality of arc-shaped parts so as to be movable in the circumferential direction. The support member 13 is arranged on the inner peripheral surface side of the closing member 12 and moves each arc-shaped part to expand the diameter. Thus, the closing member 12 can be pressed against the lining layer 2. And after pressing the closing member 12 to the lining layer 2, each arcuate part is mutually fixed in each position, and it is comprised so that the closing member 12 pressed by the lining layer 2 can be supported. .

  In this embodiment, as the closing member 12 and the support member 13, a repair covering described in Japanese Patent Application Laid-Open No. 2003-130282 is used.

  In the seismic waterproof structure A configured as described above, when a force is applied to the existing pipeline B and the manhole C, and the crack is generated in the induction joint 10 by this force, the existing pipeline B and the manhole C are caused by the crack. Is separated. After such a crack occurs, when a force acts on the existing pipeline B and the manhole C, the existing pipeline B and the manhole C behave independently of each other and are not greatly affected by each other. For this reason, seismic performance is improved.

  Further, when the groundwater penetrates into the guide joint 10 through the crack formed in the guide joint 10, the gap 4 opened to the side surface of the guide joint 10 is closed by the sealing material 11, so that the groundwater enters the lining layer 2. There is no penetration. Further, since the closing member 12 faces the guide joint 10 and is supported by the support member 13, water does not leak from the guide joint 10 into the existing pipeline B. Therefore, it is possible to reliably prevent water leakage and improve water stoppage.

  Next, an earthquake-proof structure A according to the second embodiment will be described with reference to FIGS. In the present embodiment, the sealing material 11 is filled from the side surfaces 10a, 10b of the induction joint 10 into the gaps 4 opened to the side surfaces 10a, 10b in the first embodiment. It is filled from the peripheral surface side.

  The gaps 4 formed in the fitting recesses 3b and the locking projections at positions corresponding to the locking projections 3a of the lining material 3 at positions separated from the side surfaces 10a and 10b of the guide joint 10 of the lining layer 2. A hole 17 penetrating through the gap 4 formed by the rib 3c adjacent to 3a and the fin 3f is formed. The diameter of the hole 17 is not particularly limited, but is preferably a diameter that can reach each of the gaps with a single process. By forming the hole 17 in the lining layer 2, when the locking projection 3a is fitted into the fitting recess 3b, the gap 4 formed between them and the gap 4 formed by the bush 3c and the fin 3f. Communicates with the inside of the existing pipeline B through the hole 17.

  The hole 17 is formed through the gap 4 formed in the fitting recess 3b and the gap 4 formed by the rib 3c and the fin 3f adjacent to the locking projection 3a. For this reason, the sealing material 11 filled from the hole 17 is reliably filled in the gaps 4 and does not leak to other parts. Further, when the hole 17 is formed in the lining layer 2, the positional relationship between the edge 3 e of the lining material 3 and the locking projection 3 a is constant, so that the dimension is measured based on the exposed edge 3 e. Thus, the position of each gap 4 can be reliably grasped.

  Then, by inserting a nozzle of a filler into the hole 17 formed in the lining layer 2 and operating it, and filling each gap 4 communicating with the hole 17 with the sealing material 11, the filled sealing material 11 is It flows through the gaps 4 in the extending direction of the lining layer 2 and closes the gaps 4. At this time, there is no guarantee that the gaps 4 opened to the side surfaces 10a and 10b of the guide joint 10 are directly closed, but the gaps 4 that are continuous along the existing pipeline B are closed at the positions where the holes 17 are formed. It will be substantially occluded.

  The number of holes 17 is not limited, and is formed for each edge 3e of the lining material 3 that intersects the lining material 10 when the guide joint 10 is formed. Further, the position of the hole 17 is not limited, and as shown in FIG. 5, the diameter direction of the lining material 3 such as one hole 17 (indicated by a dotted line) and the other hole 17 (indicated by a two-dot chain line). May be formed at a substantially target position. Further, the distance between the guide joint 10 and the hole 17 is not particularly limited. For example, as shown in FIG. 5, these holes 17 are formed close to the guide joint 10 so that the holes 17 can be disposed between the protrusions 12 a formed at both ends in the width direction of the closing member 12. Is possible. In this case, it is necessary to form the hole 17 and fill the sealing material 11 before the step of making the closing member 12 face the induction joint 10.

  Moreover, it is also possible to form the hole 17 at a position separated from the guide joint 10 by a distance that is 1/2 of the width dimension of the closing member 12 so that the hole 17 can be disposed outside the closing member 12. In this case, the formation of the hole 17 and the filling of the sealing material 11 can be performed independently of the process of supporting the closing member 12 on the guide joint 10 and supporting it with the support member 13, and the degree of freedom of the process order is increased. Is possible.

  In the seismic waterproof structure of the present embodiment configured as described above, since the hole 17 is formed in the lining layer 2 and the sealing material 11 is filled, the number of work steps is increased as compared with the first embodiment. There is no influence of the width dimension of the joint 10. For this reason, it is possible to work even when the width of the guide joint 10 is small, and it is possible to reliably close the gaps 4 opened to the side surfaces 10a and 10b of the guide joint 10.

  Next, an earthquake-proof structure according to the third embodiment will be described with reference to FIG. This embodiment differs from the first and second embodiments described above in that the sealing material 11 closes the gap 4 but uses a water stop material 15. Therefore, in FIG. 6, the same reference numerals are given to the same parts and the parts having the same functions as those of the above-described embodiments, and the description thereof is omitted.

  As shown in FIG. 6, one or a plurality of water-stopping materials 15 formed in a ring shape are arranged on the guide joint 10. The water blocking material 15 closes the gap 4 that swells when the water acts and opens to the side surfaces 10 a and 10 b of the induction joint 10. For this reason, the water stop material 15 has a dimension that can effectively exhibit the above function when swollen.

  The water-stopping material 15 may be in a free state after being placed on the induction joint 10, but is preferably fixed to the side surfaces 10 a and 10 b using an adhesive. By fixing the water stop material 15 to the side surfaces 10a and 10b in this way, it is possible to set the swelling start point of the water stop material 15 when the induction joint 10 is submerged.

  Even in the seismic waterproof structure constructed as described above, when the guide joint 10 is submerged, it swells due to the action of this water and enters the gap 4 opened to the side surfaces 10a, 10b. Can be occluded.

  FIG. 7 is a diagram for explaining another example of the lining layer 2 configured by being wound in a spiral shape. In the figure, the lining layer 2 has a lining material 7 and a fitting member 8, and these are spirally wound to form a tubular shape, thereby covering the inner peripheral surface of the existing pipeline B. .

  The lining material 7 is formed with fitting recesses 7b constituting the fitting portions on both sides in the width direction. Similarly to the lining material 3, a rib 7c and a contact piece 7d are formed at the tip of the rib 7c at a predetermined position of the lining material 7.

  The fitting member 8 is formed with locking projections 8a along the longitudinal direction on both sides in the width direction for fitting with fitting recesses 7b provided in the lining material 7. Further, the approximate center in the width direction is connected by an Ω-shaped connecting piece 8c, and a groove 8b having an Ω shape of the connecting piece 8c is formed. A protective piece 8d is provided outside the connecting piece 8c. The fitting member 8 is configured such that the fitting member 8 can be bent and expanded or contracted in the width direction by forming the groove 8b by the connecting piece 8c.

  The engaging protrusion 8a provided on one side of the fitting member 8 is fitted into the fitting recess 7b provided on one side in the width direction of the lining material 7 configured as described above, and the lining is wound while spirally winding these. The inner peripheral surface of the existing pipe B is covered by fitting the engaging protrusion 8a of the fitting member 8 into the fitting recess 7b provided on the other side in the width direction of the material 7. The lining layer 2 is configured by filling the space formed between the lining material 7, the fitting member 8, and the inner peripheral surface of the pipe 1 with a backing material 5 such as mortar.

  In the lining layer 2 configured as described above, the gap 4 is formed between the fitting recess 7b and the groove 8b, and between the connecting piece 8c and the protective piece 8d of the fitting member 8, respectively. 4 is opened to the side of the induction joint. And each said clearance gap 4 is obstruct | occluded by being filled with the sealing material 11, or is obstruct | occluded by the water stop material 15, and even when the induction joint 10 is flooded, this water osmose | permeates each clearance gap 4. There is no.

  Next, an earthquake-proof structure according to the fifth embodiment will be described with reference to FIG. In this embodiment, the lining layer 2 is configured by connecting a plurality of arc-shaped lining materials 20 in the circumferential direction to form a cylinder, and the cylinder is connected to the extension direction of the existing pipe line B to be installed. The inner peripheral surface of the path B is covered. And the lining layer 2 is comprised by filling the backing material 5 between the pipe | tube which consists of the lining material 20, and the internal peripheral surface of the existing pipe line B. FIG.

  In the lining layer 2 configured in this way, the connecting portions of the arc-shaped lining materials 20 become discontinuous portions having gaps 4, and the gaps 4 are opened to the side surfaces 10 a and 10 b of the induction joint 10, 2 water supply.

  In this embodiment, a hole 17 is provided in the vicinity of the guide joint 10 that crosses the connecting portion of the arc-shaped lining material 20 and penetrates the lining material 20 to both sides of the guide joint 10 to reach the backing material 5. The gap 4 formed in the connecting portion of the lining material 20 is closed by filling the sealing material 11 from these holes 17. Therefore, even if the guide joint 10 is submerged, the water does not penetrate into the lining layer 2 through the connecting portion between the lining materials 20 or leak into the existing pipe line B.

  Next, an earthquake-proof structure according to the sixth embodiment will be described with reference to FIG. In this embodiment, the lining layer 2 is composed of a sleeve-like lining material 9 that does not have a gap in itself.

  The lining layer 2 shown in FIG. 9 is composed of a lining material 9 cured in a state where a flexible sleeve impregnated with a thermosetting resin or a photocurable resin is in contact with the inner peripheral surface of the tube 1. ing. That is, the sleeve is disposed by inserting the sleeve into the existing pipe line B from one side of two adjacent manholes and allowing the end portion to reach the other side manhole. Thereafter, air is blown into the sleeve to expand it to contact the inner peripheral surface of the existing pipe B, and this state is maintained and the sleeve is heated or cured by irradiation with light to form the lining layer 2. Is forming.

  The lining layer 2 is configured such that two adjacent manholes are connected by a single pipe made of a cured lining material 9. In this lining layer 2, the flexible sleeve is inflated and brought into contact with the inner peripheral surface of the pipe 1 constituting the existing pipe line B, but the lining material 9 and the pipe 1, which are cured from the sleeve, are in close contact with each other. Can not guarantee.

  For this reason, there exists a gap 4 between the lining material 9 and the inner peripheral surface of the pipe 1 where the shape and dimensions cannot be managed. Such a gap 4 may be formed over the entire length of the existing pipeline B, or may be formed in a single manner like a bubble. Therefore, when the guide joint 10 is formed in the pipe 1 across the lining layer 2, the gap 4 is opened on the side surfaces 10a and 10b.

  As described above, in this embodiment, it is specified that the gap 4 opened to the side surfaces 10a and 10b of the guide joint 10 is formed on the circumferential surface that is the boundary between the lining material 9 and the pipe 1, The position and size on the circumferential surface are not managed at all. Therefore, by filling the guide joint 10 with the sealing material 11, it is possible to close the gap 4 opened to the side surfaces 10 a and 10 b with the filled sealing material 11.

  In particular, the sealing material preferably has fluidity in the initial state and has a property of curing with time, and has foamability. By using such a sealing material, after the filling material 10 is filled, it is filled in the gap 4 opened to the side surfaces 10a and 10b by the action of pressure generated in the process of volume expansion of the sealing material. The gap 4 can be closed.

  However, in the case of a sealing material having foamability, when the pipe 1 is displaced in the axial direction due to a crack in the induction joint 10, the sealing material may be peeled off from one surface as the pipe 1 is displaced. For this reason, it is preferable to arrange | position the partition material 26 shown with the dashed-dotted line in the same figure in the guidance joint 10 so that the filled sealing material can be isolate | separated.

  That is, the filling jig 25 (indicated by a two-dot chain line) equipped with the partition member 26 closes the opening portion of the guide joint 10 into the existing pipeline B, and arranges the partition member 26 at a substantially central portion of the guide joint 10. . In a state where the guide joint 10 is closed by the filling jig 25, the sealing material is filled on both sides of the partition member 36 from a hole (not shown) provided in the filling jig 25. Since the filled sealing material foams in a state where the guiding member 10 is closed, a part of the sealing material enters the gap 4 opened to the side surfaces 10a and 10b of the guiding joint 10 by the pressure at the time of foaming. The gap 4 is closed and cured.

  Then, in the event of an earthquake or the like, cracks occur in the induction joint 10, and when the pipe 1 is displaced in the axial direction, the hardened sealing material is separated from the partition material 26 as the starting point, and the side surfaces 10a and 10b are respectively separated. Hold the state attached to. Therefore, the gap 4 opened to the side surfaces 10a and 10b is kept closed by the sealing material, and water does not penetrate into the lining layer 2.

  In each of the above-described embodiments, in order to close the gap 4 opened on the side surfaces 10a and 10b of the induction joint 10, the sealing material 11 having fluidity in the initial state and cured with time, or water acted. The case where the water stop material 15 which sometimes swells was used was demonstrated. However, it is particularly preferable that the sealing material has fluidity in the initial state and has a property of curing with time, has foamability, and further has swelling properties by the action of water. By using such a sealing material, the gap 4 can be reliably closed.

  The seismic waterproof structure according to the present invention is advantageous for use in sewer pipes that have already been laid in the ground and have passed for a long time, and pipes for wiring.

A Seismic waterproof structure B Existing pipe C Manhole 1 Pipe 2 Lining layer 3 Lining material 3a Locking projection 3b Fitting recess 3c Rib 3d Abutting piece 3e Edge 4 Crevice 5 Backing material 7 Lining material 7b Fitting recess 7c Rib 7d contact piece 7e edge 8 fitting member 8a locking projection 8b groove 8c connecting piece 8d protective piece 9 lining material 10 guide joint 10a, 10b side surface 10c bottom surface 11 sealing material 12 closing member 12a ridge 13 support member 15 stop Water material 17 Hole 20 Lining material 25 Filling jig 26 Partition material

Claims (5)

It is an anti-seismic structure for existing pipes laid in the ground,
A lining layer that is formed on the inner peripheral surface of the existing pipeline and regenerates the existing pipeline;
An induction joint formed by a groove formed in an inner peripheral surface of the existing pipe line at a predetermined position of the existing pipe line over the entire circumference and crossing the lining layer in the thickness direction and formed in the thickness direction of the pipe;
A closing member having a width and flexibility greater than the width of the induction joint, and disposed opposite to the induction joint to close the induction joint;
A supporting member that presses and supports the closing member against the lining layer;
Have
The lining layer has a discontinuous portion that constitutes a gap of the lining layer along an extension direction of an existing pipe line, and the guide joint is formed across the lining layer, whereby the discontinuity is formed. A portion is opened to the side surface of the induction joint to form a gap of the lining layer, and the gap is filled with a blocking member made of a fluid waterproof material that has fluidity and cures with time to exhibit water-stopping properties. An earthquake resistant structure for an existing pipe line, wherein the gap is closed by A hole reaching the gap from the inner peripheral surface side of the lining layer is formed at a position corresponding to a discontinuous portion constituting the gap of the lining layer in the vicinity of the guide joint in the extending direction of the existing pipe line. Injecting a blocking member made of a fluidized water-stopping material that has the fluidity through the hole and cures with time to exhibit water-stopping properties , and the discontinuous portion is formed open to the side surface of the induction joint The seismic waterproof structure for an existing pipeline according to claim 1, wherein a gap between the formed lining layers is closed.   The lining layer has a long lining material provided with fitting portions along the longitudinal direction on both sides in the width direction, and a fitting portion provided with a fitting portion provided on one side in the width direction on the other side. Or an elongated fitting member, and the inner peripheral surface of the existing pipe is covered in a spiral manner. 2. Seismic waterproof structure for existing pipes as described in 2. It is an anti-seismic structure for existing pipes laid in the ground,
A lining layer that is formed on the inner peripheral surface of the existing pipeline and regenerates the existing pipeline;
An induction joint formed by a groove formed in an inner peripheral surface of the existing pipe line at a predetermined position of the existing pipe line over the entire circumference and crossing the lining layer in the thickness direction and formed in the thickness direction of the pipe;
A closing member having a width and flexibility greater than the width of the induction joint, and disposed opposite to the induction joint to close the induction joint;
A supporting member that presses and supports the closing member against the lining layer;
Have
The lining layer has a discontinuous portion that constitutes a gap of the lining layer along an extension direction of an existing pipe line, and the guide joint is formed across the lining layer, whereby the discontinuity is formed. A portion is opened to the side surface of the induction joint to form a gap of the lining layer, and a blocking member made of a water-stopping material that swells due to the action of water and exhibits water-stopping property is disposed on the induction joint. An anti-seismic water-proof structure for an existing pipe line, which is configured to swell when water penetrates into the joint and closes a gap between the lining layers opened to the side surfaces of the guide joint.   The lining layer has a long lining material provided with fitting portions along the longitudinal direction on both sides in the width direction, and a fitting portion provided with a fitting portion provided on one side in the width direction on the other side. 5. The structure according to claim 4, wherein the inner peripheral surface of the existing pipe is covered in a spiral manner by being fitted to the pipe or via a long fitting member. Seismic waterproof structure for existing pipes.