JP6625881B2 - Band-shaped rubber member, repair member, inner surface repair structure of existing pipeline - Google Patents

Description

  The present invention relates to a belt-shaped rubber member used for repairing or seismic-proofing a target portion of a pipeline (including a sewer) such as a sewer or a drainage channel or a joint between pipelines, and using the belt-shaped rubber member. The present invention relates to a repair member which has been repaired, and an inner surface repair structure of an existing pipeline by the repair member.

  A large number of pipelines, such as drains for sewers and industrial drains, have been laid underground due to modernization of infrastructure, urban development, and environmental improvement accompanying the rapid growth of Japan, but are generally said to be about 50 years old. With the end of its useful life, these aging processes have been highlighted.

  Aged pipelines need to be replaced with new ones, but since many of them have exceeded their useful lives, replacing them requires enormous cost and labor and is difficult to implement. Therefore, at present, repair of a deteriorated portion or a damaged portion is performed as an emergency measure, and repair techniques therefor are being studied. In particular, since the inner surface of the conduit is likely to deteriorate due to physical erosion, chemical erosion, or the like due to a fluid, most of the repair techniques are inner surface repair techniques.

  For example, in Patent Literature 1, an elastic cylindrical seal band provided with a thin groove on the outer periphery, and an expansion band that can be expanded so as to be pressed against the inner wall of the sewer are provided inside the seal band. A structure for mounting and sealing a joint part of a sewer is described.

  Further, in Patent Document 2, a main rubber ring disposed from the inner surface of one side tube to the inner surface of the other side tube, and a main rubber ring interposed between the inner surface of both side tubes and the main rubber ring, respectively. There is described a pipe inner surface repair joint having two auxiliary rubber rings and a set of expansion bands arranged to press the main rubber ring against the inner surfaces of the two side tubes, respectively.

  On the other hand, since the Great East Japan Earthquake, relatively large earthquakes have occurred frequently, but cracks have occurred in pipelines due to earthquakes and ground uplift and land subsidence due to earthquakes, and damage such as displacement, slipping out and bending at the connection between pipelines has been observed. Therefore, when repairing existing pipelines and connecting portions between the existing pipelines, it is necessary to consider their seismic resistance.

Japanese Utility Model No. 3003786 JP-A-2005-98943 JP 2015-175449 A

  There are several techniques for repairing the inner surface of an existing pipeline or a connection between existing pipelines using an elastic member such as a rubber band (rubber ring). The "bulge" (bulge phenomenon) of the elastic member toward the inside which may be generated by the external pressure on the elastic member due to the water pressure from the inner surface to the inside due to the intrusion into the gap with the back surface. It is not considered, and it cannot be said that the characteristics such as elasticity and plasticity of the elastic member are fully utilized even in earthquake resistance. When the "bulge" (bulge phenomenon) occurs, there arises a problem that a fixing member for fixing the elastic member to the inner surface of the conduit is easily detached, and the elastic member is deteriorated.

  For example, as in Patent Literature 3, there is a repair method in which a lining material (corresponding to an elastic member) is pressed and fixed to the inner surface of an existing pipe using a metal tubular sleeve. The method using a (metal ring) can suppress the "bulge", but also suppresses characteristics such as elasticity and plasticity of the elastic member, so that the flexibility / following performance of the elastic member cannot be utilized, Seismic performance deteriorates. Therefore, it does not necessarily have earthquake resistance against damage caused by the above-mentioned earthquake.

  The present invention has been made to solve the problems described above, and when repairing or seismic-proofing a target portion of a pipeline or a joint between the pipelines, the inside of the pipeline or the connection portion is required. A belt-shaped rubber member which is used by being attached to a peripheral surface and / or an outer peripheral surface, and which suppresses “bulging (curving)” to the opposite side due to external pressure from one surface side, and an existing pipeline using the belt-shaped rubber member Another object of the present invention is to provide a member for repairing a connection between existing pipelines and a structure for repairing the inner surface of an existing pipeline using the repair member.

One aspect of the present invention relates to a belt-shaped rubber member, and the invention according to claim 1 of the present application is directed to a method for repairing or quakeproofing a target portion of a pipeline or a joint between pipelines. a belt-shaped rubber member used to mount the road or the inner peripheral surface and / or the outer peripheral surface of the connecting portion, possess at least one side of the strip surface of the belt-shaped rubber member, stretchability and flexibility, rubber sheet a strip of the bulge suppressing reinforcement sheet that will be configured as a laminated sheet with a fiber sheet, a fiber sheet to the surface side strip rubber member, wherein the benzalkonium been fixed in the longitudinal direction of the band. "

  The term "pipe" as used in the present invention includes the concept of a sewer, and is a large pipe mainly made of concrete or a resin such as FRP or the like, which allows a person to work inside the pipe. Concrete products include shafts such as fume tubes, box culverts, culverts, and manholes. For example, a fume tube has an inner diameter of 800 mm or more.

  These have been used as sewage pipes for domestic water, drainage pipes for factories, water pipes for water supply, heat supply pipes, etc., and their deterioration and deterioration have become a problem. Since the Great Hanshin Earthquake and the Great East Japan Earthquake, earthquake resistance has become an urgent issue.

  Further, the “connection portion” is a joint portion that connects the same type of pipe in the horizontal direction, the vertical direction, and the oblique direction. For example, a joint portion between fume tubes adjacent in the horizontal direction, a joint portion between manhole members adjacent in the vertical direction in an assembly manhole, and the like.

  The belt-shaped rubber member of the present invention is a belt-shaped rubber-based material, and generally, when repairing or earthquake-resistant a target portion of the pipeline or a connection portion between the pipelines, An annular member is mounted on the inner peripheral surface and / or outer peripheral surface of the pipe or the connecting portion for use. The “band surface” refers to the surface of the band-shaped rubber member.

  Attach to the inner peripheral surface when repairing the pipeline or the connection part on the inner surface, to the outer peripheral surface when repairing the outer surface, or to both the inner and outer peripheral surfaces when performing seismic or seismic repair (crimp fixing) I do. The crimping and fixing is performed by using a set of extended fixing bands described later when the fixing band is attached to the inner peripheral surface, and by replacing the expanding performance of the extended fixing band with the tightening performance (constriction performance) when attaching to the outer peripheral surface. It is preferable to use a tightening and fixing band.

  The type of the rubber is not particularly limited as long as it has been conventionally used for sewers, manholes, and drains of factories and has elasticity and plasticity. For example, those specified in "JIS K 6353 Water-Use Rubber (Class IV)", synthetic rubber equivalent thereto, and the like. It is desirable that the elasticity and plasticity (deformation performance) of the rubber be large as long as it does not adversely affect the strength and durability of the rubber, and it is at least equal to or better than those conventionally used for sewage pipes and manhole joints. Is good.

  The band width in the band shape is not particularly limited as long as it can cover the repaired portion, but is preferably 150 to 500 mm. If the band width is too wide, the above-mentioned bulging (bulging phenomenon) cannot be sufficiently suppressed unless the number of the expansion fixing bands is increased, and if the number of the expansion fixing bands is increased, the elasticity and plasticity of the rubber are suppressed and the earthquake resistance is improved. Is reduced.

  The band length in the band shape is determined by the inner diameter or the outer diameter of the conduit or the connecting portion, and is a length that can form a later-described band ring attached to the inner peripheral surface or the outer peripheral surface. The band thickness is preferably 5 to 20 mm in consideration of workability, repair effect, seismic performance, and the like.

In the belt-shaped rubber member of the present invention, in order to suppress the bulging or improve the seismic performance, at least one band surface of the band-shaped rubber member has a band-shaped bulge suppressing reinforcing sheet having elasticity and flexibility. that it is secured in the longitudinal direction.

Bulge suppressing reinforcing sheet, the belt-shaped rubber all SANYO band-shaped having elasticity, plasticity less stretchability and flexibility of the rubber member, the fiber sheet surface material as a reinforcing material to the rubber sheet as a back member As a laminated sheet such as a rubberized cloth . The rubber sheet is the one used for the rubberized cloth, or the equivalent thereof. The fiber sheet is made of a resin fiber such as a nonwoven fabric, a metal fiber, or an inorganic fiber. Among them, a nonwoven fabric used for a waterproof drainage sheet or a rubber-coated cloth is preferable from the viewpoint of availability and price. Therefore, the belt-shaped rubber member of the present invention can be easily obtained by selecting an existing waterproof draining sheet or rubber-coated cloth that meets the purpose and diverting it.

  The thickness of the sheet is not particularly limited, and the sheet includes the concept of a film. A preferred range of the sheet thickness is 0.5 to 2.5 mm. The elasticity / plasticity (deformation performance) of the sheet is at least smaller than the elasticity / plasticity of the rubber of the belt-shaped rubber member. Preferably they are equivalent.

  If the elasticity and plasticity of the sheet are too large, the elasticity and plasticity of the rubber cannot be suppressed, and the swelling cannot be sufficiently suppressed. If the elasticity / plasticity of the sheet is too small, the swelling can be suppressed, but the elasticity / plasticity of the rubber is suppressed more than necessary, so that it is not possible to achieve earthquake resistance utilizing the characteristics of the rubber.

These bulge suppressing the reinforcing sheet, Ru is secured to the longitudinal direction of the strip on at least one side of the strip surface of the belt-shaped rubber member.

  The fixation includes vulcanization adhesion to the belt surface, adhesion with a strong adhesive, and the like. Especially, the said vulcanization adhesion is preferable.

  The vulcanization bonding includes a heat vulcanization bonding method using no adhesive, a natural vulcanization bonding method using an adhesive, and the like, and the bonding method is appropriately selected as needed.

  Vulcanization bonding can be suitably used when the swelling suppressing reinforcing sheet using rubber such as rubberized cloth is fixed to the belt surface. The band-shaped rubber member using the vulcanized adhesive is a swelling suppression reinforcing sheet such that the rubber of the swelling suppression reinforcing sheet is brought into contact with a molded product (rubber plate) formed by extruding a rubber raw material at the stage of manufacturing the rubber plate. And vulcanizing and bonding the rubbers to each other.

  Fixing by vulcanization bonding is preferable because the belt-shaped rubber member and the swelling suppressing reinforcing sheet can be firmly integrated.

  In order to enhance the swelling suppression effect and the seismic resistance effect, the swelling suppression reinforcing sheet may be fixed to both surfaces of the band-shaped rubber member, or the fixing to the band surface and the embedding in the member may be used in combination. However, if the swelling suppression reinforcing sheet is used too much, the elasticity and plasticity of the belt-shaped rubber member may be deteriorated, and the seismic performance may be reduced.

  Further, in the above-described configuration of the swelling suppression reinforcing sheet, not all swelling suppression reinforcing sheets need to be the same kind. A plurality of types of swelling suppression reinforcing sheets may be used in combination, such as using different types of swelling suppression reinforcing sheets on both surfaces to be fixed, or using different types of swelling suppression reinforcing sheets to be fixed and embedded swelling suppression reinforcing sheets.

The invention according to claim 2 of the present application is directed to an aspect of the present invention, wherein the band-shaped rubber member is provided with the band-shaped rubber member in the vicinity of both end portions of the band surface on one side, the inner peripheral surface and / or the outer peripheral surface of the pipe or the connecting portion. A fixing portion for attaching a fixing band for crimping and fixing to the band is provided, and a plurality of rows of grooves are provided in the longitudinal direction of the band near both ends of the band on the other band surface. Item 1 ).

  As described above, the belt-shaped rubber member of the present invention is used for repairing or quake-proofing a target portion of a pipeline or a joint between pipelines by using a set of fixed bands such as an extended fixed band or a tightening fixed band. It is used by being crimped and fixed to the inner peripheral surface and / or the outer peripheral surface of the conduit or the connecting portion.

  These fixing bands are usually a set of two, and are used by being attached near both ends of the band on one side of the band-shaped rubber member, so that the attached fixing band is hardly displaced or detached. Further, it is preferable to provide an attaching portion for attaching the fixing band near both ends of the band on one side of the band-shaped rubber member so that the band is not bent and attached.

  The attachment portion is a concave portion provided on the surface of the band in which the fixing band fits, a step portion for preventing lateral displacement of the band, a ridge or a wavy shape. When using a band-shaped rubber member having a wide band width, it is necessary to use a set of three fixed bands and arrange them at three places near the both ends of the band and at the center, so that the mounting portion is the band-shaped rubber member. It is necessary to provide it not only near both ends of the band of the member but also at the center.

  It is preferable that a plurality of rows of grooves are provided in the longitudinal direction of the band near both ends of the band on the surface of the band opposite to the side where the mounting portion is provided (back side of the mounting portion). Since the surface opposite to the side where the mounting portion is located is a surface that is in contact with the surface of the tube and the connection portion, by providing the groove on this surface, the tube and the connection by a fixed band are provided. The effect of press-fixing to the part is enhanced.

  The width of the groove is about 1 to 3 mm and the depth is about 0.5 to 2.5 mm. The number of rows and the row spacing of the groove are not particularly limited, but the number of rows is preferably 5 to 10 rows, and the row spacing is about 1 to 3 mm.

  The grooves are the same as the irregularities obtained by knurling, and when the rubber plate of the belt-shaped rubber member is extruded and manufactured, the groove is formed by making a part of the base into a jagged shape with irregularities. Is obtained.

The invention according to claim 3 of the present application is based on the description that "the band-shaped rubber member has a tapered shape at both ends and a substantially vertical trapezoidal longitudinal cross section, and an upper bottom band including a trapezoidal tapered portion. The belt-shaped rubber member according to claim 1 or 2 , wherein a corrosion-resistant layer for preventing deterioration of the band surface of the band-shaped rubber member or the swelling suppressing reinforcing sheet is provided on the surface.

  The shape of both end portions of the band of the band-shaped rubber member is not particularly limited as long as it is determined according to a mounting form and a shape of a mounting portion on the inner peripheral surface and / or the outer peripheral surface of the conduit or the connection portion. When used by crimping and fixing to the pipeline or the inner peripheral surface of the connecting portion by an extended fixing band, it is preferable that both ends of the band are tapered so that the longitudinal cross section in the lateral direction is substantially trapezoidal. .

  By providing tapered portions at both ends of the band, it is possible to reduce the load due to external force such as water pressure and water flow applied to the ends, so that deterioration of the band-shaped rubber member from the ends can be prevented. The taper angle may be any angle as long as the fluid material flows smoothly without being caught, and is not particularly limited because it varies depending on the band thickness of the band-shaped rubber member, but is generally about 15 to 30 °.

In the belt-shaped rubber member according to the second aspect of the present invention, the taper is directed to the opposite side (the side with the groove) so that the side on which the mounting portion is provided is the upper base of the substantially trapezoidal shape. It is provided in a tapered form.

  In addition, it is preferable that an anticorrosion layer for preventing the deterioration of the band surface of the band-shaped rubber member or the swelling suppressing reinforcing sheet is provided on the band surface on the upper bottom side including the trapezoidal tapered portion. The provision of the anticorrosion layer on the upper bottom side is such that, in the inner surface repair, the upper bottom side is an inner surface side of a pipe or the connection portion, and water containing a substance that corrodes the inner surface such as various sewage and wastewater. Because it touches the liquid.

  For example, when the belt-shaped rubber member of the present invention is used for inner surface repair of a drainage channel of a sewer or a chemical factory, if the surface of the belt-shaped rubber member or the bulging suppression reinforcing sheet is exposed to the inner surface of a pipe or the like, alkalinity is increased. There is a possibility that the surface deterioration of the belt-like member may progress due to chemical and mechanical erosion due to wastewater containing substances, acidic substances and corrosive substances. Therefore, when there is a concern that chemical erosion or mechanical erosion may occur strongly, it is preferable to use a belt-shaped rubber member provided with the anticorrosion layer.

  The type and method of forming the corrosion-resistant layer are not particularly limited as long as the above-described chemical and mechanical erosion can be prevented. In addition, when corrosion-resistant rubber is used for the rubber of the belt-shaped rubber member, the corrosion-resistant layer may not be provided.

  Examples of the method of forming the corrosion-resistant layer include coating with a known acid-resistant resin, corrosion-resistant resin, or corrosion-resistant rubber-based paint. Since the belt-shaped rubber member of the present invention is based on rubber, it is particularly preferable that the rubber member be capable of coating a rubber-based substrate.

  Specifically, various rubber-based paints described in JP-A-05-229589, rubber coating agents described in JP-A-2003-165854, fluororesins described in JP-A-2004-301425, JP-A-2008-214566 And a resin in which polytetrafluoroethylene powder described in JP-A-2015-175514 is dispersed.

  The coating method may be a conventional coating method such as spraying and roller coating, and is not particularly limited. Further, the thickness of the corrosion-resistant layer formed by coating is not particularly limited. If a strong and dense corrosion-resistant layer can be formed, a layer thickness in the order of microns can be obtained.

  On the other hand, similar to the vulcanization bonding of the swelling suppressing reinforcing sheet to the belt surface of the belt-like rubber member, when producing the belt-like rubber member, a corrosion-resistant rubber fine powder, a mixture of the rubber fine powder and the corrosion-resistant resin fine powder are used. Alternatively, the corrosion-resistant layer may be formed by vulcanizing and bonding a corrosion-resistant rubber sheet, a laminated sheet of a corrosion-resistant rubber sheet and a corrosion-resistant resin sheet, to the belt surface of a belt-shaped rubber member or a bulge suppressing reinforcing sheet. The thickness of the anticorrosion layer is not particularly limited, but is, for example, about 0.5 to 2 mm. As the rubber used for the anticorrosion layer, for example, a rubber composition disclosed in JP-A-11-349768, JP-A-2005-281482, JP-A-2015-189849, or the like may be used.

One of the other inventions of the present application relates to a repair member (inner surface repair member), and the invention according to claim 4 of the present application is directed to “repair the inner surface of an existing pipeline or the inner surface of a connection portion between existing pipelines. In this case, a repair member to be attached to the inner peripheral surface of the existing pipeline or the connecting portion, wherein the belt-shaped rubber member according to claim 2 or 3 is formed in an annular shape, and a left and right side of the belt ring. A repair member comprising a set of extended fixing bands attached near both ends of the band to fix the band ring from the inside to the existing pipeline or the inner peripheral surface of the connecting portion by crimping.

  The connection part of the existing pipelines between the existing pipelines is the above-mentioned pipeline and connection part, which is an existing one. In addition, the repair member is an inner surface repair member used when repairing the deteriorated portion of the inner surface of the tube, and after repairing the deteriorated portion of the tube by a conventional method, finally repairing the inner peripheral surface including the repaired portion. It is used by attaching (pressing and fixing).

One of the constituent members of the repairing member of the present invention is a band ring in which the band-shaped rubber member of the invention according to claim 2 or 3 is formed in an annular shape. The belt-shaped rubber member is as described above. The band ring is formed by joining both ends in the longitudinal direction of the band-shaped rubber member by vulcanization bonding to form a ring. The ring diameter of the band ring is determined according to the inner or outer diameter of the existing pipeline to be mounted.

  Another one of the constituent members of the repair member of the present invention is attached near both ends of the left and right bands of the band ring, and the band ring is press-fitted from the inside to the existing pipe or the inner peripheral surface of the connection portion. Is a set of extended fixed bands. As described above, it is preferable that the band-shaped rubber member (band ring) is provided with a mounting portion, and when the mounting portion is provided, the extended fixed band is mounted on the mounting portion.

  This extended fixing band is attached to the vicinity of both ends of the left and right bands of the band ring, and is used as a pair. As described above, when the band width of the band-shaped rubber member (band ring) is wide, it is located near the center of the band. Can also be attached and used in sets of three. The reason why the extension fixing band is formed in such a form is to make use of rubber properties (stretchability, plasticity, elasticity, deformability, etc.) as much as possible, and to achieve earthquake resistance by following external force (deformability). .

  In the repair member of the present invention, seismic repair in which a seismic effect is added to the repair effect can be achieved by a combination of the characteristics of the rubber and the above-described swelling suppressing reinforcing sheet and the installation form of the expansion fixing band.

  The type, shape, form, and the like of the extension fixing band are not limited as long as the band ring can be crimped and fixed to the existing pipeline or the inner peripheral surface of the connection portion from inside. However, the band width is preferably 1/10 to 1/6 of the band width of the band ring in total of one set of bands, and the band surface of the band ring must not be widely covered. The use of a band with a wide band increases the pressure-fixing effect, so that the swelling of the band-shaped rubber member (band ring) can be strongly suppressed (bulging phenomenon), but the elasticity and plasticity of the band-shaped rubber member required for earthquake resistance are reduced. Therefore, there is a possibility that the seismic performance is reduced. The band width varies depending on the band width of the band ring, but is usually about 20 to 30 mm.

  The expansion fixing band is specifically, for example, a locking ring of a plastic pipe joint described in Japanese Patent No. 3486800, a fixing ring of a plastic joint described in Japanese Patent No. 3783018 or Japanese Utility Model No. 3102863, and Patent Document 1. And an extended band similar to that described in Patent Document 2 can be used.

One of the other inventions of the present application relates to an inner surface repairing structure of an existing pipeline, and the invention according to claim 5 of the present application is directed to "a belt ring in which the belt-shaped rubber member according to claim 2 is formed in an annular shape, use the repair section, consisting of a set of extensions fixing band for crimping fixing the band ring on the inner peripheral surface of the inner or we already設管path or the connecting portion is attached to the vicinity of the band end portions of the left and right belt-ring Repairing the inner surface of the existing pipeline on the inner peripheral surface of the existing pipeline, so that the groove is closely contacted with the inner surface of the existing pipeline. The band ring is installed, and the band ring is compressed by a pair of expansion fixed bands attached to the mounting portions near the left and right ends of the band ring, and the groove of the groove is compressed, and the inner circumference of the existing pipe line is compressed. An inner surface repair structure for an existing pipeline characterized by being fixed by crimping on a surface " A.

  The existing pipeline mentioned here includes a connection between the existing pipelines in addition to the pipeline itself. “Pipe line” and “connection part” are as described above.

In the present invention, the repair member is as described above, and the band ring is formed of the band-shaped rubber member having the mounting portion and the groove. The belt-shaped rubber member is as described in the second aspect , and the band ring and the expansion fixing band constituting the repairing member are as described in the fourth aspect .

  In the inner pipe repairing structure of the existing pipeline of the present invention, the band ring is installed so as to cover a repaired portion on the inner face of the existing pipeline whose cross section has been repaired by a conventional method. The band ring is arranged such that the side with the mounting portion is on the front side (the inside of the pipe) and the side with the groove is on the back side (the side in contact with the inner surface of the existing pipeline).

  The band ring is compressed and fixed to the inner peripheral surface of the existing pipeline by compressing the groove of the groove by a set of expansion fixing bands attached to the attachment portions near the left and right ends of the band ring. The band surface of the band ring between the extended fixing bands is exposed toward the inside of the existing pipeline.

  Due to the compression of the groove, the band ring can be tightly fixed even if the inner surface of the existing pipeline is roughened. In addition, utilizing the characteristics of rubber (stretchability, plasticity, deformability, etc.) by the fact that the band surface (the inner surface of the tube) of the band ring between the extended fixing bands is exposed toward the inside of the existing pipeline. Therefore, the ability of the member to follow the external force can be exhibited, so that seismic performance can be obtained.

  Further, as described above, even when the band surface (the inner surface of the tube) of the band ring between the extended fixing bands is exposed toward the inside of the existing pipeline, the band ring has a swelling suppressing reinforcing sheet. Since it is made of a member, the above-mentioned swelling phenomenon can be suppressed, and the repair effect and the seismic performance are maintained.

  When the existing pipeline to be repaired is a connecting portion (joint portion) between the existing pipelines, the band ring is installed across the adjacent existing pipelines, and one set (two) of the expansion and fixing is provided. The band is attached to each of the adjacent existing pipelines so that the vicinity of both ends of the band ring is tightly fixed to the inner surface of each of the adjacent existing pipelines.

The invention according to claim 6 of the present application is based on the description that the swelling suppression reinforcing sheet has a width between the left and right attachment portions provided near both ends of the band of the band-shaped rubber member, 6. The inner surface repairing structure for an existing pipeline according to claim 5 , wherein the belt is fixed to the belt surface on the side of the pipeline opposite to the certain side by vulcanization bonding of rubber.

  In the inner surface repairing structure of the existing pipeline of the present invention, if the swelling phenomenon can be suppressed without greatly reducing the characteristics (stretchability, plasticity, deformability, etc.) of the rubber in the band ring, the swelling in the band ring is suppressed. Although the arrangement of the reinforcing sheet is not particularly limited, as described above, since the band surface of the band ring (the inner surface of the tube) between the extended fixing bands is exposed toward the inside of the existing pipeline, the band-shaped rubber is used. It is preferable to provide the member in the longitudinal direction of the band with a width between the left and right mounting portions provided near both ends of the band of the member.

  Further, it is preferable that the swelling suppression reinforcing sheet is provided on a band surface of the band-shaped rubber member of the band ring on the side of the conduit opposite to the side where the mounting portion is provided. According to such an installation form, intrusion into the structure of groundwater can be prevented, and the swelling phenomenon can be effectively suppressed while making use of the above-described characteristics of rubber.

  Further, the swelling suppressing reinforcing sheet is a laminated sheet of a rubber sheet and a fiber sheet, and the fiber sheet is fixed to the surface of the band by vulcanization bonding between the rubber of the band-shaped rubber member and the rubber sheet with the fiber sheet facing the front side. Is preferred.

  If such a laminated sheet is used, the properties of rubber (stretchability, plasticity, deformability) and the properties of fibers (flexibility such as stretchability, but not as much as rubber, suppress the above properties of rubber, reinforcement) Both can be utilized, and swelling suppression performance and reinforcement performance can be easily obtained. The fibers preferably have stretchability, strength, corrosion resistance, heat resistance, and the like. In addition, if the rubber is fixed to the belt surface by vulcanization, it can be integrated with the rubber body of the belt-shaped rubber member, and peeling due to aging deterioration and the like hardly occur. The vulcanization adhesion is as described above.

  If the band ring of the repairing member is formed using the band-shaped rubber member of the present invention, after the band ring is attached to the inner peripheral surface of the pipe or the connecting portion between the pipes, the inside of the pipe caused by inundation of groundwater or the like after the belt ring is attached. Of the band ring can be suppressed.

  In addition, the repair member of the present invention can be easily attached to a pipe or a connecting portion of pipes, and has a shape in which the surface of a repaired portion repaired by repairing a cross-section or the like is strong and follows external force (stress due to deformation of the member). Since the belt ring is formed using the belt-shaped rubber member of the present invention, the band ring hardly swells as described above.

  When the repairing member of the present invention is used, seismic repairing in which the repair effect is added to the seismic effect can be achieved by a combination of the characteristics of the rubber, the swelling suppressing reinforcing sheet and the installation form of the expansion fixing band.

  Therefore, in the inner surface repairing structure of the existing pipeline of the present invention using the repairing member of the present invention, the pipeline or the connecting portion between the pipelines is reinforced by earthquake resistance.

Is a diagram showing an arrangement example of a suppression reinforcing sheet bulge in the strip rubber member such as the present invention, examples of arranging the fixed to (a) ~ (d) the surface of the rubber body (belt surface of the belt-shaped rubber member), ( (e) and (f) are reference examples arranged by embedding in a rubber main body (band-shaped rubber member), and (g) is an embodiment arranged by using both the fixing and the embedding. (A) is an example in which the rubber body is disposed on one entire surface of the rubber body, (b) is an example in which the rubber body is partially disposed on one surface of the rubber body, and (c) is a rubber in the belt-shaped rubber member. (D) is an example in which one side of the rubber body in the band-shaped rubber member is disposed on the entire surface, and (d) is an example in which the opposite surface is disposed on a partial surface of the rubber body in the band-shaped rubber member. (F) is an example in which two layers are embedded in the rubber body of the belt-shaped rubber member, and (g) is an example in which the rubber layer is embedded in the rubber body of the belt-shaped rubber member and is one-sided. This is an example in which it is fixedly arranged on the entire surface. It is a figure (photograph) which shows the example of the repair member of this invention, and the example of the attachment to the inner surface of a pipe (tube) (example of use of a repair member). This installation example is a test execution example, and a pipe (fume pipe) is used instead of the existing pipeline. (A) is a band ring forming the repair member, (b) is a split piece of a pair of extended fixed bands forming the repair member, and (c) is a repair member obtained by assembling the split pieces of the extended fixed band. (D) is a repairing member of the present invention obtained by attaching and assembling a pair of expanding and fixing bands to both ends of a band ring, and (e) is a tube constituting a conduit of the repairing member of the present invention. (F) is a diagram showing crimping fixation (pressure fixing) of the band ring on the inner surface of the tube (fume tube) by expansion of the expansion fixing band. Is an example and a cross-sectional view of the conduit direction showing an example of the inner surface repair structure of the existing pipeline of the present invention or the like using the repair section of repairing member such as the present invention. (A) is an embodiment using a band ring made of a band-shaped rubber member provided with a swelling suppression reinforcing sheet on one side, (b) is an embodiment using a band ring made of a band-shaped rubber member provided with a swelling suppression reinforcing sheet on both sides, (C) is a reference example using a band ring of a band-shaped rubber member provided with a swelling suppression reinforcing sheet in a rubber body. It is a figure which shows the example of the inner surface repair structure of the existing pipe in the connection part of the pipe A and the pipe B which comprises the connection part of the existing pipe.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the embodiments described below.

FIG. 1 is a view showing an example of the arrangement of a swelling suppressing reinforcing sheet 3 in a belt-shaped rubber member 1 of the present invention, wherein (a) to (d) are fixed to the surface of a rubber main body 2 (the band surface of the belt-shaped rubber member 1). example placed by, reference example arranged by burying into the (e) and (f) the rubber body 2 (band-like rubber member 1), (g) is carried out which is arranged in combination with the buried and the fixation It is an example.

  (A) is an example in which the rubber body 2 is disposed on one entire surface of the rubber body 2 in the belt-shaped rubber member 1, (b) is an example in which the rubber body 2 is disposed on a part of one surface of the rubber body 2 in the belt-shaped rubber member 1, and (c) is a belt-like shape. (D) is an example in which one side of the rubber body 2 in the belt-shaped rubber member 1 is disposed on the entire surface of the rubber body 2, and (d) is an example in which the opposite surface is disposed on a part of the surface. Is an example in which one layer is embedded in the rubber body 2 of the belt-shaped rubber member 1, (f) is an example in which two layers are embedded in the rubber body 2 of the belt-shaped rubber member 1, and (g) is a belt-shaped rubber. This is an example in which a single layer is embedded in the rubber body 2 of the member 1 and is fixed to the entire surface of one side.

  In the examples of (a) to (d), the swelling suppressing reinforcing sheet 3 is a laminated sheet obtained by laminating a rubber sheet and a fiber sheet (such as a nonwoven fabric) (a conventional waterproofing sheet used for construction, a rubberized cloth, and the like). ), And the fiber sheet is arranged by vulcanization bonding so that the fiber sheet is on the surface side of the rubber body 2.

The fixation by vulcanization bonding is performed by laying the swelling suppressing reinforcing sheet 3 in the manufacturing stage of the belt-shaped rubber member 1 so that the rubber of the swelling suppressing reinforcing sheet 3 comes into contact with a molded product (rubber plate) obtained by extruding a rubber raw material. This is achieved by vulcanizing and bonding the rubber of the rubber body 2 and the rubber of the rubber sheet. According to such vulcanization bonding between rubbers, firm fixation to the surface of the rubber main body 2 (the band surface of the band-shaped rubber member 1) can be performed .

  The bulge suppressing reinforcing sheet 3 may be arranged on one or both sides of the rubber main body 2 as shown in FIGS. 3A and 3C, but the end surface of the rubber main body 2 (the band end of the band-shaped rubber member 1). When processing such as providing grooves on the front surface), the swelling suppressing reinforcing sheet 3 is provided on the surface of the central portion of the rubber main body 2 as shown in (b) and (d). Surface).

  When the rubber body 2 (the band-shaped rubber member 1) is fixed at both ends and installed on the inner peripheral surface of the conduit, the above-mentioned “bulge” becomes maximum at the center of the rubber body 2, so that at least the rubber body If it is provided on the center surface of the belt 2 (the center surface of the belt-shaped rubber member 1), "bulging" can be suppressed.

  The bulge suppressing reinforcing sheet 3 may be buried and disposed in the rubber body 2 as shown in (e) and (f). It is preferable that the rubber body 2 be buried and disposed because the surface processing (processing such as provision of a groove or an anticorrosion layer) of the rubber main body 2 becomes easy. The embedding is performed by laying a swelling suppressing reinforcing sheet 3 at a predetermined position when extruding a rubber raw material in a manufacturing stage of the belt-shaped rubber member 1.

  The bulging suppression reinforcing sheet 3 to be buried is, for example, a flexible (stretchable, plastic) resin sheet, a flexible (stretchable, plastic) metal mesh, a metal net, or a metal thin plate. The thickness of these sheets is not particularly limited as long as the flexibility (stretchability and plasticity) of the rubber body 2 (the belt-shaped rubber member 1) and the followability (deformability) to external force are not significantly impaired.

  The swelling suppression reinforcing sheet 3 may be arranged as a single layer as shown in (e), but if it is desired to increase the effect of seismic reinforcement, two or more thin layers may be arranged as shown in (f). Good.

  The bulge suppressing reinforcing sheet 3 may be disposed on the rubber body 2 by using both the fixing and the embedding as shown in FIG. When the belt-shaped rubber member 1 is attached to the target object, and when it is desired to particularly reinforce a specific side, a member in which the swelling suppressing reinforcing sheet 3 is unevenly arranged can be used.

  FIG. 2 is a view (photograph) showing an example of the repair member 7 of the present invention and an example of mounting the repair member 7 on the inner surface of a pipe (tube) (an example of use of the repair member 7). This installation example is a test execution example, and a pipe (fume pipe) 8 is used instead of the existing pipeline.

  (A) assembling the band ring 4 constituting the repair member 7, (b) assembling the split piece 5 of the pair of extended fixed bands constituting the repair member 7, and (c) assembling the split piece 5 of the extended fixed band. The repairing member 7 of the present invention is constructed by attaching and assembling a pair of expanding and fixing bands 6 at both ends of the band ring 4, and (e) of the present invention. The repair member 7 is installed on a pipe (fume pipe) 8 constituting a pipe, and (f) is a crimp-fixing (tightening) of the band ring 4 to the inner surface of the pipe (fume pipe) 8 by expanding the expansion fixing band 6. FIG.

  As shown in FIG. 1A, the band ring 4 constituting the repair member 7 of the present invention is formed by joining both ends in the longitudinal direction of the band-shaped rubber member 1 as shown in FIG. It is. The inner surface of the band ring 4 is coated with a lubricant for uniformly and smoothly expanding the expansion fixing band, or is provided with an anticorrosion layer for preventing surface deterioration due to sewage or factory drainage. preferable.

  As shown in (b), in this example, the extended fixed band constituting the repairing member 7 of the present invention includes a pair of extended fixed bands 6, 6, and each extended fixed band 6 is divided into two. It is obtained by connecting the divided pieces 5 of the extended fixed band in a ring shape.

  The reason why each of the extension fixed bands 6 is divided into two is that the division into the divided pieces 5 and 5 of the extension fixed band facilitates transportation to the site and carrying into the pipeline. In this example, the band is divided into two, but when the diameter of the extended fixed band 6 becomes large, the band may be divided into three or four. The divided pieces 5 and 5 of the two extended fixed bands are connected at two places to form one extended fixed band 6, as shown in FIG.

  The repairing member 7 of the present invention, which is composed of the band ring 4 and a pair of the expansion fixing bands 6, 6, repairs the existing pipe when repairing the inner surface of the existing pipeline or the inner surface of the connection portion between the existing pipelines. As shown in (d), at least on the inner surface near both ends of the band ring 4 (belt-shaped rubber member), extended fixing bands 6 and 6 are used. Used by mounting. On the outer surface of the band ring 4, a swelling suppressing reinforcing sheet 3 (a flexible resin sheet in this example) is fixed by a strong adhesive.

  When the existing repairing member 7 shown in (d) repairs an existing pipe inside, as shown in (e), the band ring 4 to which the bulge suppressing reinforcing sheet 3 is fixed on the outer surface is used to bulge suppressing reinforcement. The sheet 3 is fixed such that the side to which the sheet 3 is fixed is located on the inner surface side of the tube (fume tube) 8, and a pair of the extended fixing bands 6, 6 are arranged from the inside of the tube toward the inner surface of the tube (fume tube) 8. It is used in a form that is fixed by pressure bonding.

  The band ring 4 made of the band-shaped rubber member 1 shown in FIG. 1 is fixed only near both ends, and the band surface at the center is exposed toward the inside of the pipe without being covered by the fixing tool. It is possible to make use of the properties of rubber, such as properties, and not only to repair the inner surface of the tube (fume tube) 8, but also to improve the seismic performance by reinforcing the tube (fume tube) 8 from the inside of the tube.

  Further, since the swelling suppressing reinforcing sheet 3 is arranged on the back side (outer side) of the band ring 4, even if the surface of the band ring 4 inside the tube is exposed as shown in the drawing, it is directed toward the tube inside. Does not swell significantly. Therefore, the repair effect and the seismic reinforcement effect can be maintained for a long time.

  After the repair member 7 is temporarily mounted on the inner surface of the tube (fume tube) 8 in the form as shown in (e), it is expanded and fixed using an expansion jig such as a jack as shown in (f). The band 6 is expanded in the circumferential direction thereof, and is thereby fixed to the inner surface of the tube body (fume tube) 8 by crimping (pressure fixing).

Figure 3 is a cross-sectional view of the conduit direction showing an example of the inner surface repair structure 16 of the existing pipeline of the present invention or the like using the examples and the repair section 7 of the repair section 7 such as the present invention. (A) shows an embodiment using a band-shaped rubber member 4 provided with a swelling suppression reinforcing sheet 3 on one side, and (b) uses a band ring 4 made of a band-shaped rubber member provided with a swelling suppression reinforcing sheet 3 on both sides. There embodiments, is a reference example using the (c) is band ring 4 by further provided with belt-shaped rubber member inhibition reinforcement sheet 3 bulges into the rubber body 2.

  The repair member 7 of the present invention includes the band ring 4 and a pair (in this example, a pair of two) of the extended fixing bands 6 and 6. The details of the repair member 7, the band ring 4, and the extended fixed band 6 are as described above.

  Attachments (recesses) 15, 15 for attaching the extension fixing bands 6, 6 are provided near both ends of the band of the band ring 4, and grooves 10, 10 are provided on the surface opposite to the attachment parts 15, 15. Is provided. Further, both ends of the band ring 4 are tapered 9, 9 and the cross section of the band ring is substantially trapezoidal.

  The existing pipeline 12 is made of a concrete tubular body, and has a repaired portion 14 on the inner surface of which a deterioration such as a crack is repaired by a conventional method.

  In the band ring 4 shown in (a), an anticorrosion layer 11 made of fluororubber-based paint is provided on the side of the existing pipeline 12 on the side where the mounting portion (recess) 15 is located (the upper bottom side of the trapezoid). . On the opposite side of the groove 10 (on the lower bottom side of the trapezoid), a swelling suppressing reinforcing sheet 3 is provided on the surface in the width direction between the substantially extended fixed bands 6 and 6 in the longitudinal direction.

  In the inner surface repair structure 16 of the existing pipeline shown in (a), as shown in the figure, the band ring 4 is installed on the inner surface 13 of the existing pipeline 12 so as to cover the repair portion 14, and the extension fixing bands 6, 6 are provided. Is pressed and fixed to the inner surface 13.

  As shown in the figure, the band ring 4 is disposed such that the side where the groove 10 and the bulge suppressing reinforcing sheet 6 are located is on the back side (the side in contact with the inner surface 13 of the existing pipeline 12). It tapers toward the inner surface 13.

  According to the inner surface repairing structure 16 of the existing pipeline, since the extension fixing band 6 is provided only near the both ends of the band ring 4 and does not press down the entire surface of the band ring 4, the rubber in the band ring 4 is not provided. The rubber properties (stretchability, plasticity, deformability, etc.) of the main body 2 can be utilized and the force can be reduced by following the external force. Therefore, seismic repair becomes possible.

  Further, in the repair member 7 of the present invention, since the band ring 4 made of the band-shaped rubber member provided with the swelling suppression reinforcing sheet 6 is used, groundwater or the like enters between the existing pipeline 12 and the back surface of the band ring 4. Even if a water pressure is generated toward the inside of the existing pipeline 12, it is possible to suppress the band ring 4 between the extension fixing bands 6 and 6 from expanding (protruding) toward the inside of the pipe.

  Further, since a plurality of rows of grooves 10 are provided on the back side of the band ring 4 (the side in contact with the inner surface 13 of the existing pipeline 12), the grooves are formed when the expanded fixed band 6 presses against the inner surface 13. The groove 10 is collapsed, so that the band ring 4 can be firmly fixed to the inner surface 13 by crimping.

  Further, since the anticorrosion layer 11 is provided on the surface side (inner surface side) of the band ring 4 in contact with the sewage and various wastewaters, it is possible to prevent the chemical erosion by the sewage and various wastewaters and the mechanical erosion by these running waters. .

  Further, since the attachment portion (recess) 15 is provided at a position where the extension fixing band 6 is to be attached, the extension fixing band 6 is prevented from being bent or displaced or dislodged by vibration such as an earthquake due to bending and attachment. be able to. In this example, the mounting portion is concave, but is not limited to this shape.

  Further, since the tapered portions 9 are provided at both ends of the band ring 4, it is possible to receive flowing water pressure due to a water flow such as sewage added to the end of the band ring 4, and deterioration from the end of the band ring 4. Can be prevented.

  In the band ring 4 shown in (b), the swelling suppression reinforcing sheets 3 and 3 are provided on both sides of the band ring 4 in an arrangement as shown in the figure, and the inner surface repairing structure 16 of the existing pipeline shown in (b) is The present embodiment differs from the above-mentioned (a) inner surface repair structure 16 of the existing pipeline in that such a band ring 4 is used. As described above, by using the repair member 7 having the swelling suppressing reinforcing sheets 3 and 3 provided on both sides of the band ring 4, the swelling described above can be strongly suppressed, and the deterioration of the rubber body 2 of the band ring 4 can be suppressed. .

  In the band ring 4 shown in (c), the swelling suppressing reinforcing sheet 3 is provided so as to be buried in the rubber body 2 in an arrangement as shown in the figure, and the inner surface repair structure of the existing pipeline shown in (b) is provided. 16 is different from the above-described inner surface repair structure 16 of the existing pipeline in (a) and (b) in that such a band ring 4 is used. As described above, if the swelling suppression reinforcing sheet 3 is reinforced by the band ring 4 in which the swelling suppression reinforcing sheet 3 is embedded in the rubber body 2, damage to the swelling suppression reinforcement sheet 3 during transportation or construction and peeling from the rubber body 2 are prevented. There is no need to worry. In addition, since the rubber characteristics on the surface of the rubber main body 2 can be utilized, the ability to follow an external force is improved, and seismic repair can be performed effectively.

  FIG. 4 is a view showing an example of the inner surface repairing structure 16 of the existing pipeline at the connection 19 between the pipes A17 and B18 forming the connection between the existing pipelines 12, 12. As shown in FIG.

  As shown in the figure, when the connection between the existing pipelines is repaired on the inner surface, the band ring 4 is installed over the inner surface 13 of the tube A17 and the inner surface 13 of the tube B18 so as to cover the repaired portion. The both ends of the band 4 are fixed to the inner surface 13 of each tube by the expansion fixing bands 6 and 6 respectively. In this figure, for the sake of simplicity, the repair portion 21 of the crack is shown in a visible form.

  As described above, if the inner surface of the connecting portion 19 is repaired by using the repairing member 7 of the present invention, a seismic effect can be obtained in addition to the repairing effect. Seismic reinforcement can be achieved.

DESCRIPTION OF SYMBOLS 1 ... Belt-shaped rubber member, 2 ... Rubber main body, 3 ... Swelling suppression reinforcement sheet, 4 ... Band ring, 5 ... Divided piece of extended fixed band, 6 ... Extended fixed band, 7 ... Repair member, 8 ... Tube (fume tube) ),
9 ... taper, 10 ... groove, 11 ... corrosion-resistant layer, 12 ... existing pipeline, 13 ... inner surface, 14 ... repair site, 15 ... mounting portion (recess), 16 ... inner surface repair structure of existing pipeline, 17 ... pipe Body A, 18 ... Tube B, 19 ... Connection, 20 ... Ground, 21 ... Crack repair site

Claims (6)

A belt-shaped rubber member to be attached to an inner peripheral surface and / or an outer peripheral surface of the pipeline or the connection portion when repairing or seismic resistance of a target portion of the pipeline or a connection portion between the pipelines, , on at least one side of the strip surface of the belt-shaped rubber member, the elasticity and flexibility possess, rubber sheet and the fiber sheet and strip-shaped bulge suppressing reinforcement sheet that consists a laminated sheet of the fiber sheet to the surface side strip rubber member whose longitudinal direction is fixed, wherein the Turkey of band Te. Attachment of a fixing band for fixing the band-shaped rubber member to the inner peripheral surface and / or the outer peripheral surface of the pipe or the connecting portion, near the both ends of the band on one side of the band-shaped rubber member. The band-shaped rubber member according to claim 1, wherein a plurality of rows of grooves are provided in the longitudinal direction of the band near the both ends of the band on the other surface of the band. The band-shaped rubber member has a substantially trapezoidal longitudinal cross section in the lateral direction of the band at both ends of the band, and the band-shaped rubber member or the band-shaped rubber member on a band surface on the upper bottom side including the trapezoidal tapered portion. The belt-shaped rubber member according to claim 1 or 2 , further comprising an anticorrosion layer for preventing deterioration of the band surface of the swelling suppressing reinforcing sheet. A repairing member to be attached to an inner peripheral surface of the existing pipeline or the connecting portion when repairing an inner surface of an existing pipeline or an inner surface of a connecting portion between the existing pipelines, according to claim 2 or 3 . A band ring in which a band-shaped rubber member is formed in an annular shape, and a set for attaching the band ring near both ends of the left and right bands to press-fit the band ring from the inside to the existing pipe or the inner peripheral surface of the connection portion. A repair member comprising: an extended fixed band. A strip ring which is formed annularly a strip rubber member according to claim 2, the inner peripheral surface of the inner or we already設管path or the connecting portion a band ring mounted in the vicinity of the band end portions of the left and right belt-ring An inner surface repair structure of an existing pipeline using a repair member including a set of expansion fixing bands for crimping and fixing, wherein a repair portion of an inner surface of the existing pipeline covers an inner peripheral surface of the existing pipeline. The band ring is installed such that the groove is in close contact with the inner surface of the existing pipeline, and the band ring is a set of expansions attached to the mounting portions near the left and right ends of the band ring. An inner surface repair structure for an existing pipeline, wherein a groove of the groove is compressed by a fixing band and fixed to an inner peripheral surface of the existing pipeline by pressure bonding. The swelling suppression reinforcing sheet has a width between the left and right mounting portions provided near both ends of the band of the band-shaped rubber member, and a band on the side of the band-shaped rubber member opposite to the side where the mounting portion is provided. The inner surface repair structure for an existing pipeline according to claim 5 , wherein the surface is fixed by vulcanization bonding of rubber.