JP5875553B2 - Lining method, lining structure, lining material - Google Patents

Description

  The present invention relates to a lining method, a lining structure, and a lining material for lining an inner peripheral surface of a hollow structure having a diameter changing portion that changes so that an inner diameter is enlarged or reduced.

  Conventionally, a method of assembling a long cylindrical lining structure using a synthetic resin lining material inside a hollow structure such as an existing pipe or tunnel, and covering the inner peripheral surface of the hollow structure There is.

  For example, in Patent Document 1, a tubular body is formed by curving a strip-shaped lining material and joining both ends in the longitudinal direction. Then, the lining structure is assembled by arranging a plurality of cylindrical bodies in the axial direction inside the hollow structure and joining the cylindrical bodies with a synthetic resin joining material.

  Further, in Patent Document 2, a cylindrical body is formed by joining a plurality of arc-shaped segment materials in the arc direction. Then, a plurality of cylindrical bodies are arranged inside the hollow structure in the axial direction, and the cylindrical bodies are joined to each other with a screw member and a nut, or the other cylinder is placed in a recess provided at an end of one cylindrical body. The lining structure is assembled by fitting convex portions provided on the shape body.

  Further, in Patent Document 3, a belt-shaped lining material is spirally wound inside the hollow structure to fit the fitting portions provided on the side edges of adjacent lining materials, The lining structure is assembled by bonding a bonding material to the surface.

  Some hollow structures have steps, bends, or bends.

  On the other hand, in Patent Document 1, the bending region of the main body portion of the bonding material is extended, and the interval between the cylindrical bodies is expanded in the width direction and the thickness direction, thereby following the step or bending of the hollow structure. Yes.

  In Patent Document 2, the bending depth of the variable width segment is changed to bend the lining structure to follow the bending of the hollow structure.

  Moreover, in patent document 3, it is following the level | step difference and bending of a hollow structure by changing the magnitude | size of the diameter of the spiral tube formed with a lining material, and the direction of an axis | shaft.

  In Patent Document 4, a gentle arc-shaped cutting part is provided at one end in the width direction of the belt-like lining material, and a concave or convex fitting part is provided at the other end. After the lining material is curved to form a cylindrical body, a plurality of the cylindrical bodies are arranged in the axial direction inside the bent portion of the hollow structure. And the fitting parts which oppose each other, the cutting parts which oppose each other are put together, and the bent lining structure is assembled by fuse | melting a long abutting material.

  Moreover, in patent document 5, the curved cylindrical member in which a center axis line bends is assembled by cutting the joining edge part of a pair of cylindrical body diagonally, and joining this cut surface. And the curved lining structure is assembled by arranging a plurality of curved cylinder members in the axial direction inside the bent part of the hollow structure, and fitting the fitting parts of the adjacent curved cylinder members together.

  Furthermore, in patent document 6, the cylindrical body which rounded the pipe and in which both ends or one end inclines with respect to a surface perpendicular | vertical to an axial direction is arranged in the multiple axial direction inside the bending part of a cavity structure. And the curved lining structure is assembled by joining adjacent cylindrical bodies through an H-type joiner or a π-type joiner.

Japanese Patent No. 4743725 JP 2010-43731 A JP 2009-149049 A JP 2002-81296 A JP 2000-274191 A JP 2000-301613 A

  By the way, some hollow structures have a diameter changing portion that changes so that the inner diameter is enlarged or reduced. The step of the hollow structure is also a form of the diameter changing portion. When the inner diameter difference between the large diameter side and the small diameter side of the diameter changing portion is large, a bonding material having a bending region as in Patent Document 1, a variable width segment as in Patent Document 2, and a spiral tube as in Patent Document 3 In this case, the difference in the inner diameter cannot be accommodated, and the lining structure cannot be assembled at the diameter changing portion, so that the lining cannot be continuously performed.

  Moreover, even if it uses the cylindrical body for bending parts like patent documents 4-6, a lining structure cannot be assembled corresponding to the diameter change part of a hollow structure, and it can line up continuously. Can not.

  An object of the present invention is to continuously line the inner peripheral surface of a hollow structure having a diameter changing portion.

  A lining method according to the present invention is a lining method for lining an inner peripheral surface of a hollow structure having a diameter changing portion that changes so that an inner diameter is enlarged or reduced. By processing the lining material for a band-shaped diameter changing portion with a constant width curved in an arc shape by varying the radius of curvature into a predetermined length, and then bending both ends in the longitudinal direction by bending in the thickness direction A step of forming a plurality of obtained cylindrical cones for diameter changing portions by varying the diameters of the large diameter portions and the diameters of the small diameter portions of each cylindrical cone so as to gradually expand or contract, Arranging a plurality of cylindrical cones for the diameter changing portion inside the diameter changing portion of the hollow structure in the axial direction in order of decreasing the diameter of the small diameter portion or increasing the diameter of the large diameter portion, and inside the diameter changing portion And joining the cylindrical cones for adjacent diameter change portions That.

Further, the lining structure according to the present invention is a lining structure assembled inside the cavity structure in order to line the inner peripheral surface of the cavity structure having a diameter changing portion that changes so that the inner diameter is enlarged or reduced. a ones, have different radii of curvature of the one side edge and the other side edge in the width direction, curved in an arc shape, and a strip of diameter change portion for the lining material at a constant width. Predetermined length formed diameter change portion for the lining material, be bonded both end portions in the longitudinal direction and curved in a thickness direction, diameter change section tubular cone by the lining material is constituted . Cylindrical cone for diameter change portion is not provided in a plurality, the diameter of the diameter and small-diameter portions of the large diameter portion of the respective tubular cones are different so as to gradually enlarged or reduced. In a state where a plurality of diameter change portion on the inner side of the diameter change of the cavity structure tubular cones, ordered by size of ascending order or the large-diameter portion is diameter of the small diameter portion is larger in the axial direction, adjacent diameter The cylindrical cones for change part are joined.

Further, the lining material according to the present invention is arranged in the axial direction inside the diameter changing portion that changes so that the inner diameter of the hollow structure increases or decreases, in the order of decreasing the diameter of the small diameter portion or increasing the diameter of the large diameter portion. In this state, the lining material forms a cylindrical cone that lines the inner peripheral surface of the diameter changing portion, and the lining material is formed in a belt shape having a constant width, and one side edge in the width direction. and has a shape curved have different radii of curvature on arcuate other side edge, in a state in which both ends in the longitudinal direction is curved in the thickness direction is attached, have a small diameter portion and the large diameter portion constitute the cylindrical cone.

  According to the above, after forming the plurality of diameter changing portion cylindrical cones corresponding to the diameter changing portion of the hollow structure from the diameter changing portion lining material, the cylindrical cones are arranged in order of decreasing diameter. Or it arranges in the axial direction inside the diameter change part in order of the larger, and joins the cylindrical cones for diameter change parts adjacent to each other. Therefore, even if the inner diameter difference between the large diameter side and the small diameter side of the diameter changing portion of the cavity structure is large, a lining structure is assembled inside the diameter changing portion so as to correspond to the inner diameter difference. The inner peripheral surface of the body can be continuously lined.

  Further, in the present invention, a plurality of constant-diameter portion cylindrical bodies obtained by curving a straight strip-shaped constant-diameter lining material having a constant width and joining both end portions in the longitudinal direction, A plurality of constant diameter cylindrical bodies are arranged in the axial direction inside the constant diameter part where the inner diameter of the body is constant, and the adjacent cylindrical bodies for constant diameter part are joined together, and the diameter changing part and the constant diameter part You may join between the cylindrical cone for diameter change parts and the cylindrical body for constant diameter parts which adjoin each other inside a boundary part.

  Thus, after forming a plurality of constant-diameter portion cylindrical bodies corresponding to the constant-diameter portion of the hollow structure from the constant-diameter portion lining material, the cylindrical portions for the constant-diameter portion are arranged inside the constant-diameter portion. A lining structure corresponding to the constant diameter portion can be assembled by joining adjacent cylindrical bodies for constant diameter portion in the direction. In addition, the lining structure can be made continuous by joining between the cylindrical body for the constant diameter portion and the cylindrical cone for the diameter changing portion at the boundary between the diameter changing portion and the constant diameter portion of the hollow structure. Thus, the inner peripheral surface of the hollow structure can be continuously lined.

  Moreover, in this invention, the 1st fitting part is provided in the both ends of the cylindrical cone for diameter change parts, and it is for strip | belt-shaped diameter change parts in which the 2nd fitting part was provided in the both ends of the width direction. A bonding material may be further provided. In this case, by fitting the first fitting portions of the cylindrical cones for the diameter change portion adjacent to each other inside the diameter change portion and the respective second fitting portions of the diameter change portion bonding material, What is necessary is just to join between the cylindrical cones for change parts with the joining material for diameter change parts, and to join the both ends of the longitudinal direction of the joining material for diameter change parts.

  As a result, the cylindrical cones for the diameter-changing portion that are adjacent to each other inside the diameter-changing portion of the hollow structure are easily joined with the joint material for the diameter-changing portion, and a lining structure corresponding to the diameter-changing portion is assembled. Can be made easier.

  Further, in the present invention, the belt-shaped joint for constant diameter portion in which the third fitting portion is provided at both ends of the cylindrical member for constant diameter portion and the fourth fitting portion is provided at both ends in the width direction. You may further provide material. In this case, by fixing the third fitting portion of the cylindrical member for the constant diameter portion adjacent to the inside of the constant diameter portion and the fourth fitting portion of the bonding material for the constant diameter portion, the constant diameter portion What is necessary is just to join between the cylindrical bodies with the joining material for constant diameter parts, and to join the both ends of the longitudinal direction of the joining material for constant diameter parts. Also, one of the first fittings of the cylindrical cones for the diameter changing portion among the cylindrical cones for the diameter changing portion and the cylindrical bodies for the constant diameter portion which are adjacent to each other inside the boundary portion between the diameter changing portion and the constant diameter portion. The joint portion is fitted to one second fitting portion of the diameter-changing portion bonding material, and one third fitting portion of the constant-diameter portion tubular body is fitted to one of the first constant-diameter portion bonding materials. By fitting with the 4 fitting portion and fitting the other second fitting portion of the diameter changing portion bonding material and the other fourth fitting portion of the diameter constant portion bonding material, for the diameter changing portion You may join between a cylindrical cone and the cylindrical body for constant diameter parts with the diameter changing part joining material and the constant diameter part joining material.

  This makes it easy to assemble the lining structure corresponding to the constant diameter portion by easily joining the adjacent constant diameter portion cylindrical bodies with the constant diameter portion bonding material inside the constant diameter portion of the hollow structure. can do. Further, inside the boundary portion between the diameter changing portion and the constant diameter portion, between the adjacent diameter changing portion cylindrical cone and the constant diameter portion cylindrical body, the diameter changing portion bonding material and the constant diameter portion bonding material. Can be easily joined to make the lining structure easy to assemble. Furthermore, even if the adjacent cylindrical cone for a diameter changing portion and the cylindrical body for a constant diameter portion are bent at a large angle, the bend is formed between the cylindrical body for the constant diameter portion and the bonding material for the diameter changing portion. It is absorbed by the fitting portion and each bonding material, and the cylindrical cone for the diameter changing portion and the cylindrical body for the constant diameter portion can be reliably bonded. For this reason, it becomes possible to improve the continuity of the lining structure assembled inside the boundary portion between the diameter changing portion and the constant diameter portion of the hollow structure.

  ADVANTAGE OF THE INVENTION According to this invention, the inner peripheral surface of the cavity structure which has a diameter change part can be lined continuously.

It is the figure which showed the lining material for diameter change parts by embodiment of this invention. It is the figure which showed the cylindrical cone for diameter change parts by embodiment of this invention. It is a side view of the joining material for diameter change parts by the embodiment of the present invention. It is a side view of the lining material for constant diameter parts by embodiment of this invention. It is a perspective view of the cylindrical body for constant diameter parts by embodiment of this invention. It is a side view of the joining material for constant diameter parts by embodiment of this invention. It is the figure which showed the example of application of the lining construction method by embodiment of this invention. It is AA sectional drawing of FIG. It is sectional drawing of the junction part of the cylindrical bodies for constant diameter parts. It is the figure which showed the example of application of the lining construction method by embodiment of this invention. It is sectional drawing of the junction part of the cylindrical body for constant diameter parts and the cylindrical cone for diameter change parts by the side of a small diameter. It is sectional drawing of the junction part of the cylindrical cones for diameter change parts. It is the figure which showed the example of application of the lining construction method by embodiment of this invention. It is BB sectional drawing of FIG. It is sectional drawing of the junction part of the cylindrical cone for diameter change parts, and the cylindrical body for constant diameter parts of a large diameter side.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals.

  First, members used in the lining method according to the present embodiment will be described with reference to FIGS.

  1A and 1B are views showing a lining material 1 for a diameter change portion, where FIG. 1A is a top view and FIG. 1B is a side view. The diameter change part lining material 1 is made of synthetic resin and has flexibility. The diameter changing portion lining material 1 is an example of the “lining material” of the present invention.

  As shown in FIG. 1 (a), the diameter changing portion lining material 1 is formed into a belt having a constant width curved in an arc by changing the curvature radii of the one side edge 1L and the other side edge 1R in the width direction. Is formed. As shown in FIG. 1 (b), convex side first edges 1L and 1R of the diameter change portion lining material 1 protrude so as to protrude to the back side in the thickness direction (upper side in FIG. 1 (b)). A fitting portion 1a is provided. Between the 1st fitting parts 1a, the several rib 1b is provided in the predetermined space | interval so that it may protrude to the back side of the thickness direction.

  After the diameter changing portion lining material 1 is processed to a predetermined length, the diameter changing portion lining material 1 is curved in the thickness direction so that the first fitting portion 1a and the rib 1b come to the outside. By joining the two end portions 1d, a cylindrical cone 2 for a diameter changing portion as shown in FIG. 2 is formed. The end portions 1d of the diameter change portion lining material 1 are joined by using, for example, a fusion means by heat or ultrasonic waves, a fitting, or an adhesive.

  2A and 2B are diagrams showing the cylindrical cone 2 for a diameter changing portion, where FIG. 2A is a front view and FIG. 2B is a side view. When viewed from the front, the cylindrical cone 2 for the diameter changing portion has a rectangular shape as shown in FIG. 2 (a), and when viewed from the side, it has a trapezoidal shape as shown in FIG. 2 (b). ing. Both end faces 2b of the diameter changing portion cylindrical cone 2 are parallel to each other.

  For example, after the lining material 1 for a diameter-changing portion in FIG. 1 is cut into a plurality of lining materials having different lengths (arc lengths), the lining material 1 after the cutting is curved in the thickness direction, and both end portions in the longitudinal direction Join 1d. This operation is performed for each of the cut lining materials 1. Thereby, the cylindrical cone 2 for diameter change parts from which a magnitude | size differs is formed in multiple numbers. The diameters of the large diameter portions 2L and the diameters of the small diameter portions 2R of the cylindrical cones 2 are different from each other so as to gradually expand or contract.

  FIG. 3 is a side view of the diameter changing portion bonding material 4. The diameter change portion bonding material 4 is made of the same synthetic resin as the diameter change portion lining material 1 and is formed in a strip shape extending in a direction perpendicular to the paper surface in FIG. doing. The width of the diameter changing portion bonding material 4 is constant and smaller than the width of the diameter changing portion lining material 1.

  Concave second fitting portions 4a are provided at both ends in the width direction of the diameter changing portion bonding material 4 so as to be recessed toward the back side in the thickness direction (upper side in FIG. 3). A bending portion 4b is provided at the central portion in the width direction of the diameter changing portion bonding material 4 so as to be recessed toward the front side in the thickness direction (lower side in FIG. 3).

  FIG. 4 is a side view of the constant diameter portion lining material 6. The constant-diameter portion lining material 6 is made of the same synthetic resin as the diameter-variable portion lining material 1, and is formed in a strip shape so as to extend in a direction perpendicular to the paper surface in FIG. doing. The width of the constant diameter portion lining material 6 is constant and is larger than that of the diameter changing portion lining material 1.

  Recessed third fitting portions 6a are provided at both ends in the width direction of the constant diameter portion lining material 6 so as to be recessed toward the back side in the thickness direction (upper side in FIG. 4). Ribs 6b are provided on the back surface of the constant diameter portion lining material 6 at predetermined intervals.

  The constant diameter portion lining material 6 is curved in the longitudinal direction so that the ribs 6b are on the outside, and the both end portions 6d in the longitudinal direction are joined together to form a cylindrical body for the constant diameter portion as shown in FIG. 7 is formed. The joining of both end portions 6d of the constant diameter portion lining material 6 is performed using, for example, a fusion means, a fitting, or an adhesive.

  FIG. 5 is a perspective view of the cylindrical member 7 for a constant diameter portion. The cylindrical body 7 for a constant diameter portion is formed in a rectangular shape when viewed from the front. Both end faces 7b of the cylindrical member 7 for a constant diameter portion are parallel to each other. In order to make it easy to form the corner portion 7c of the cylindrical member 7 for the constant diameter portion, the ribs 6b of the lining material 6 for the constant diameter portion are provided with cuts 6k at predetermined intervals in the longitudinal direction.

  Similarly, in order to facilitate the formation of the corner portion 2c of the cylindrical cone 2 for the diameter change portion in FIG. 2, the ribs 1b of the diameter change portion lining material 1 in FIG. A cut may be provided.

  FIG. 6 is a side view of the constant diameter portion bonding material 3. The constant diameter portion bonding material 3 is formed in a strip shape so as to extend in a direction perpendicular to the paper surface in FIG. 6. The width of the constant diameter portion bonding material 3 is constant and smaller than the width of the constant diameter portion lining material 6. The constant diameter portion bonding material 3 includes a main body portion 3x and a cover 3y.

  The main body 3x is made of a synthetic resin that is more flexible than the cover 3y. A groove 3c is provided at the center of the main body 3x so as to be recessed toward the back side in the thickness direction (upper side in FIG. 6). Convex fourth fitting portions 3a are provided at both ends of the main body portion 3x so as to protrude to the back side in the thickness direction (upper side in FIG. 6). Between the groove | channel 3c and each 4th fitting part 3a, the bending part 3b which can be expanded-contracted in the width direction is provided.

  The cover 3y is made of the same synthetic resin as that of the lining material 1 for a diameter change portion. At the center of the cover 3y, a protrusion 3e is provided so as to protrude to the back side in the thickness direction (upper side in FIG. 6). The cover 3y is attached so as to cover the front side of the main body 3x by fitting the protrusion 3e of the cover 3y into the groove 3c of the main body 3x.

  Next, the lining method of this embodiment is demonstrated, referring FIGS.

  7, 10, and 13 are diagrams showing application examples of the lining method according to the present embodiment. FIG. 8 is a cross-sectional view taken along the line AA of FIG. 14 is a cross-sectional view taken along the line BB in FIG. 9, 11, 12, and 15 are cross-sectional views of a joint portion between the members 1 to 4, 6, and 7. In FIG. 7 to FIG. 15, hatching is omitted in order to make each part easy to see.

  This lining method is applied to line the inner peripheral surface of a hollow structure P such as a rectangular existing pipe or tunnel as shown in FIG. As shown in FIG. 7 and the like, the hollow structure P includes a constant diameter portion Pa having a constant inner diameter, a constant diameter portion Pb having a larger diameter and a constant inner diameter than the constant diameter portion Pa, and the constant diameter portion Pa. , Pb, and a diameter changing portion Pc that changes so that the inner diameter is enlarged or reduced. In this example, a predetermined range from the step Pd between the constant diameter portions Pa and Pb toward the large diameter constant portion Pb is defined as the diameter changing portion Pc.

  For example, first, the inner peripheral surface of one constant diameter portion Pa (small diameter) of the hollow structure P is lined. For this purpose, the constant-diameter portion is formed by curving the constant-diameter portion lining material 6 (see FIG. 4) in accordance with the inner diameter and shape of the constant-diameter portion Pa and joining the both end portions 6d in the longitudinal direction. A cylindrical body 7 is formed.

  Next, as shown in FIG. 8, the cylindrical body 7 for a constant diameter part is disposed inside the constant diameter part Pa. At this time, for reinforcement, a metal straight frame 8s is attached to the straight portion 7s of the cylindrical member 7 having a constant diameter, and a metal hunch frame 8c is attached to the corner portion 7c. The frames 8s and 8c are attached to the cylindrical member 7 having a constant diameter using a connecting bar 11, a metal fitting 12, a screwing member 13, and the like as shown in FIG. The connecting bar 11 passes through a hole (not shown) provided in the rib 6b. Further, in order to facilitate positioning of the cylindrical body 7 for a constant diameter portion, spacers 9a and 9b are attached to the inner peripheral surface of the constant diameter portion Pa as shown in FIGS.

  Next, as shown in FIG. 7, after arranging a plurality of constant diameter cylindrical bodies 7 inside the constant diameter portion Pa in the axial direction, the constant diameter portion cylindrical bodies 7 are joined to each other. Joining with the material 3.

  Specifically, as shown in FIG. 9, the fourth fitting portions 3 a of the constant diameter portion bonding material 3 are fitted in the thickness direction to the third fitting portions 6 a of the adjacent constant diameter portion cylindrical bodies 7. By doing so, the cylindrical member 7 for constant diameter parts is joined by the joining material 3 for constant diameter parts. At this time, a sealing material (not shown) may be sandwiched between the third fitting portion 6a and the fourth fitting portion 3a in order to improve water tightness.

  Further, the constant diameter portion bonding material 3 is curved in the longitudinal direction in advance, and the both end portions 3d (FIG. 6) in the longitudinal direction are joined to make the constant diameter portion bonding material 3 cylindrical. Alternatively, the cylindrical members 7 having a constant diameter may be joined together by the joint material 3 having a constant diameter. Or after joining between the cylindrical bodies 7 for constant diameter parts by the joining material 3 for constant diameter parts with a strip | belt shape, you may couple | bond the both ends 3d of the bonding material 3 for constant diameter parts. The joining of the both end portions 3d of the constant diameter portion bonding material 3 is performed using, for example, a fusion means or an adhesive.

  Alternatively, the cover 3y may be attached to the main body portion 3x after the cylindrical bodies 7 for the constant diameter portion are joined together by the main body portion 3x of the bonding material 3 for the constant diameter portion. Alternatively, the cover 3y is attached to the body portion 3x of the constant diameter portion bonding material 3 to assemble the constant diameter portion bonding material 3, and then the constant diameter portion bonding material 3 is used to connect the constant diameter portion cylindrical body 7 May be joined.

  When the inner peripheral surface of the constant diameter portion Pa is finished lining by the constant diameter portion lining material 6 and the constant diameter portion bonding material 3 by the above process, the inner peripheral surface of the diameter changing portion Pc is then lined.

  Therefore, a plurality of diameters processed to a predetermined length corresponding to the shape of the diameter changing portion Pc and the constant diameter portions Pa and Pb, the length of the diameter changing portion Pc, and the inner diameter difference between the constant diameter portions Pa and Pb. The change portion lining material 1 is curved into a rectangular shape, and the both end portions 1d in the longitudinal direction are joined together to form a plurality of cylindrical cones 2 for the diameter change portion. Further, the diameters of the large diameter portions 2L and the diameters of the small diameter portions 2R of the cylindrical cones 2 for each diameter changing portion are varied so as to be gradually enlarged or reduced. Further, the diameter of the large-diameter portion 2L of one of the diameter-changing portion cylindrical cones 2 arranged adjacent to each other is made the same as the diameter of the small-diameter portion 2R of the other diameter-changing portion cylindrical cone 2.

  Further, in order to facilitate positioning of the diameter changing portion cylindrical cone 2, spacers 9c and 9d are attached to the inner peripheral surface of the diameter changing portion Pc as shown in FIG. Among these, the spacer 9d arranged in the upper part in FIG. 7 has an inclined surface 9e so as to hide the step Pd.

  Next, as shown in FIG. 10, the cylindrical cone 2 for the diameter changing portion with the smallest diameter is arranged inside the boundary portion between the constant diameter portion Pa and the diameter changing portion Pc. For example, if the angle between the adjacent cylindrical body 7 for a constant diameter portion and the cylindrical cone 2 for a diameter changing portion is small, as shown in FIG. By fitting the portion 6a and the first fitting portion 1a of the diameter changing portion cylindrical cone 2 in the thickness direction, the constant diameter portion cylindrical body 7 and the diameter changing portion cylindrical cone 2 Join. Moreover, in order to improve watertightness, you may insert the sealing material which is not shown in figure between the 3rd fitting part 6a and the 1st fitting part 1a.

  On the other hand, if the angle between the adjacent cylindrical body for constant diameter portion 7 and the cylindrical cone for diameter change portion 2 is large, the cylindrical body for constant diameter portion 7 and the cylindrical cone for diameter change portion will be described later. What is necessary is just to join between the bodies 2 with the two joining materials 3 and 4 (refer FIG. 15).

  Next, as shown in FIG. 10, a plurality of cylindrical cones 2 for diameter changing portions are arranged inside the diameter changing portion Pc in the axial direction toward, for example, the constant diameter portion Pb in order of decreasing diameter of the small diameter portion 2R. After that, the diameter change portion cylindrical cones 2 are joined together by the diameter change portion joining material 4.

  Specifically, as shown in FIG. 12, the first fitting portions 1 a of the adjacent cylindrical cones 2 for diameter change portions are respectively connected to the second fitting portions 4 a of the diameter change portion bonding material 4 in the thickness direction. By fitting, the cylindrical cones 2 for diameter change parts are joined by the joint material 4 for diameter change parts. At this time, a sealing material (not shown) may be sandwiched between the first fitting portion 1a and the second fitting portion 4a in order to improve water tightness.

  In addition, the diameter-changing portion bonding material 4 is curved in the longitudinal direction in advance, and the both ends 4d (FIG. 3) in the longitudinal direction are joined to make the diameter-changing portion bonding material 4 cylindrical, and then the tube The diameter-changing portion cylindrical cones 2 may be joined to each other by means of the diameter-changing portion joining material 4. Or after joining between the cylindrical cones 2 for diameter change parts by the joining material 4 for diameter change parts with a strip | belt shape, both ends 4d of this diameter change part joining material 4 may be couple | bonded. The joining of both end portions 4d of the diameter changing portion bonding material 4 is performed using, for example, a fusion means or an adhesive.

  When the inner circumferential surface of the diameter changing portion Pc is finished lining by the diameter changing portion lining material 1 and the diameter changing portion bonding material 4 by the above process, the inner circumferential surface of the other (large diameter) constant diameter portion Pb Lining. For this purpose, the constant-diameter portion tubular body 7 is formed by curving the constant-diameter portion lining material 6 in accordance with the inner diameter and shape of the constant-diameter portion Pb and joining both end portions 6d in the longitudinal direction. Form.

  Next, as shown in FIG. 13, the constant diameter tubular portion 7 is disposed inside the boundary portion between the diameter changing portion Pc and the constant diameter portion Pb. Also at this time, as shown in FIG. 14, the straight frame 8s is attached to the straight portion 7s of the cylindrical member 7 having a constant diameter and the haunch frame 8c is attached to the corner portion 7c for reinforcement. Further, in order to easily position the cylindrical body 7 for the constant diameter portion, spacers 9a and 9b are attached to the inner peripheral surface of the constant diameter portion Pb.

  And, for example, if the angle between the cylindrical cone 2 for the diameter changing portion and the cylindrical body 7 for the constant diameter portion adjacent to each other inside the boundary portion between the diameter changing portion Pc and the constant diameter portion Pb is large, the diameter changing portion The cylindrical cone 2 and the constant diameter portion cylindrical body 7 are joined by the diameter changing portion bonding material 4 and the constant diameter portion bonding material 3.

  Specifically, as shown in FIG. 15, one first fitting portion 1 a of the diameter-changing portion cylindrical cone 2 is fitted to one second fitting portion 4 a of the diameter-changing portion bonding material 4. In addition, one fourth fitting portion 3 a of the constant diameter portion bonding material 3 is fitted to the other second fitting portion 4 a of the diameter changing portion bonding material 4. Further, the other fourth fitting portion 3 a of the constant diameter portion bonding material 3 is fitted to one third fitting portion 6 a of the constant diameter portion tubular body 7. Thereby, the adjacent cylindrical cones 2 for diameter changing portions and the cylindrical body 7 for constant diameter portions are joined by the joining materials 4 and 3.

  Moreover, in order to improve watertightness, between the 1st fitting part 1a and the 2nd fitting part 4a, between the 2nd fitting part 4a and the 4th fitting part 3a, and the 4th fitting part 3a and 3rd. A sealing material (not shown) may be sandwiched between the fitting portions 6a.

  In addition, by bending the bonding materials 4 and 3 in the longitudinal direction in advance and joining the longitudinal ends 4d and 3d (FIGS. 3 and 6), the bonding materials 4 and 3 are respectively cylindrical. You may join between the cylindrical body 7 for constant diameter parts, and the cylindrical cone 2 for diameter change parts by this cylindrical joining materials 4 and 3. FIG. Or after joining between the cylindrical body 7 for constant diameter parts and the cylindrical cone 2 for diameter change parts with the joining materials 4 and 3 with a strip | belt shape, both ends 4d and 3d of this joining material 4 and 3 are used. May be combined. Bonding of both end portions 4d and 3d of the bonding materials 4 and 3 is also performed using, for example, a fusion means or an adhesive.

  On the other hand, if the angle between the adjacent diameter-changing portion cylindrical cone 2 and the diameter-changing portion cylindrical body 7 is small at the boundary portion between the diameter-changing portion Pc and the constant-diameter portion Pb, as described above, the diameter-changing portion By fitting the first fitting portion 1a of the cylindrical cone 2 for use with the third fitting portion 6a of the cylindrical member 7 for the constant diameter portion, the cylindrical cone 2 for the diameter changing portion and the constant diameter portion What is necessary is just to join the cylindrical body 7 directly (refer FIG. 11).

  When the adjacent diameter-changing portion cylindrical cone 2 and the constant-diameter portion cylindrical body 7 have been joined at the boundary portion between the diameter-changing portion Pc and the constant-diameter portion Pb by the above process, the constant-diameter portion Pb is then joined. A plurality of constant diameter cylindrical bodies 7 are arranged in the axial direction, and the constant diameter cylindrical bodies 7 are joined together by the constant diameter portion bonding material 3 as described above (see FIG. 9).

  Through the above steps, as shown in FIG. 13, the lining structure constituted by the lining materials 1 and 6 and the bonding materials 3 and 4 inside the hollow structure P having the constant diameter portions Pa and Pb and the diameter changing portion Pc. The object 100 is assembled continuously. That is, the inner peripheral surface of the cavity structure P is continuously lined.

  Thereafter, a support work (not shown) is installed inside the lining structure 100, and the filler is injected between the hollow structure P and the lining structure 100 in several stages. And the cavity structure P and the lining structure 100 are integrated by hardening a filler.

  According to the above embodiment, a plurality of cylindrical cones for different diameter changing portions corresponding to the diameter changing portion Pc of the cavity structure P from the belt-shaped diameter changing portion lining material 1 having a constant width curved in an arc shape. The body 2 is formed. Then, the plurality of diameter change portion cylindrical cones 2 are arranged in the axial direction inside the diameter change portion Pc in order of decreasing diameter of the small diameter portion 2R, and the diameter change between the adjacent diameter change portion cylindrical cones 2 is performed. It joins with the joining material 4 for parts. For this reason, the lining structure 100 is assembled inside the diameter changing portion Pc so as to correspond to the inner diameter difference even if the inner diameter difference between the large diameter side and the small diameter side of the diameter changing portion Pc of the cavity structure P is large. Can do.

  Also, a plurality of constant-diameter portion cylindrical bodies 7 corresponding to the constant-diameter portions Pa and Pb of the cavity structure P are formed from a straight strip-shaped constant-diameter lining material 6 having a constant width. Then, the plurality of constant diameter tubular portions 7 are arranged in the axial direction inside the constant diameter portions Pa and Pb, and the adjacent constant diameter portion cylindrical bodies 7 are joined together by the constant diameter portion bonding material 3. ing. For this reason, the lining structure 100 corresponding to the constant diameter portions Pa and Pb can be assembled.

  Further, at the boundary portion between the constant diameter portions Pa, Pb and the diameter change portion Pc of the hollow structure P, the adjacent diameter constant portion cylindrical body 7 and the diameter change portion cylindrical cone 2 are directly or jointed. It joins via the materials 3 and 4. For this reason, the lining structure 100 can be made continuous inside the boundary portion between the constant diameter portions Pa and Pb and the diameter changing portion Pc.

  Therefore, it is possible to assemble the continuous lining structure 100 inside the hollow structure P having the constant diameter portions Pa and Pb and the diameter changing portion Pc and continuously line the inner peripheral surface of the hollow structure P. Become.

  Moreover, in the said embodiment, the 1st fitting part 1a of the cylindrical cone 2 for change parts is fitted to the 2nd fitting part 4a of the bonding material 4 for diameter change parts inside the diameter change part Pc. Thereby, the cylindrical cones 2 for diameter change parts which adjoin each other are joined by the joining material 4 for diameter change parts. For this reason, joining between the cylindrical cones 2 for diameter change parts becomes easy, and it can make it easy to assemble the lining structure 100 corresponding to the diameter change part Pc.

  Moreover, in the said embodiment, the 3rd fitting part 6a of the cylindrical body 7 for fixed diameter parts is fitted in the 4th fitting part 3a of the bonding material 3 for fixed diameter parts inside the diameter fixed parts Pa and Pb. By joining, the adjacent diameter-constant portion cylindrical bodies 7 are joined by the constant-diameter portion joining material 3. For this reason, joining between the cylindrical bodies 7 for constant diameter portions is facilitated, and the lining structure 100 corresponding to the constant diameter portions Pa and Pb can be easily assembled.

  Moreover, in the said embodiment, inside the boundary part of the diameter change part Pc and the diameter fixed parts Pa and Pb, one 1st fitting part 1a of the cylindrical cone 2 for diameter change parts is joined for diameter change parts. It fits into one second fitting portion 4a of the material 4, and each fourth fitting portion 3a of the constant diameter portion joining material 3 is connected to the other second fitting portion 4a of the diameter changing portion joining material 4. It is fitted to one third fitting portion 6a of the cylindrical body 7 for a constant diameter portion. For this reason, it is possible to easily assemble the lining structure 100 by easily joining the adjacent cylindrical cones 2 for a diameter changing portion and the cylindrical body 7 for a constant diameter portion with the bonding materials 4 and 3.

  Further, even if the adjacent cylindrical cones 2 for a diameter changing portion and the cylindrical body 7 for a constant diameter portion are bent at a large angle, the diameter changing portion cylindrical cone 2 and the bonding materials 3 and 4 have a constant diameter. By adjusting the fitting state of the fitting portion of the tubular member 7 for the portion or deforming the bending portions 3b, 4b of the bonding materials 3, 4, the diameter of the cylindrical cone 2 for the diameter changing portion is constant. The bending of the tubular member 7 can be absorbed. For this reason, the lining structure 100 assembled by joining the diameter-changing portion cylindrical cone 2 and the constant-diameter portion cylindrical body 7 reliably inside the boundary portion between the diameter-changing portion Pc and the constant-diameter portions Pa and Pb. It becomes possible to improve the continuity of.

  In the present invention, various embodiments other than those described above can be adopted. For example, in the above embodiment, as shown in FIG. 13 and the like, the diameter-changing portion cylindrical cone 2 is moved downward by the spacer 9d or gravity inside the diameter-changing portion Pc of the hollow structure P. Although an example is shown, the present invention is not limited to this. In addition to this, for example, spacers having inclined surfaces are arranged not only at the upper part but also at the lower part and the side part on the inner peripheral surface of the diameter changing part of the hollow structure, so that the cylindrical cone for the diameter changing part is hollow. You may approach to the center axis side or one corner side of the structure.

  Moreover, in the above embodiment, the convex first fitting portion 1a of the cylindrical cone 2 for the diameter changing portion is fitted in the thickness direction to the concave second fitting portion 4a of the bonding material 4 for the diameter changing portion. Although a combined example is shown, the present invention is not limited to this. Other than this, for example, one of the first fitting portion of the cylindrical cone for the diameter changing portion and the second fitting portion of the bonding material for the diameter changing portion is made concave, and the other is made convex. You may make it fit in the width direction or the thickness direction.

  Further, in the above embodiment, the convex fourth fitting portion 3a of the constant diameter portion bonding material 3 is fitted in the thickness direction to the concave third fitting portion 6a of the constant diameter portion cylindrical body 7. However, the present invention is not limited to this example. In addition to this, for example, one of the fourth fitting portion of the bonding member for constant diameter portion and the third fitting portion of the cylindrical member for constant diameter portion is made concave and the other is made convex. You may fit in a direction or a width direction.

  Moreover, in the above embodiment, the convex 4th fitting part 3a of the joining material 3 for constant diameter parts was fitted to the concave 2nd fitting part 4a of the joining material 4 for diameter change parts in the thickness direction. Although an example is shown, the present invention is not limited to this. In addition to this, for example, one of the fourth fitting portion of the constant diameter portion bonding material 3 and the second fitting portion of the diameter changing portion bonding material has a concave shape and the other has a convex shape. You may fit in a direction or a width direction.

  Moreover, although the example which joined between the cylindrical cones 2 for several diameter change parts with the diameter changing part joining material 4 was shown in the above embodiment, this invention is not limited only to this. In addition to this, for example, the cylindrical cones for the diameter-changing portion can be directly joined to each other by the concave-convex fitting structure provided in the cylindrical cone for the diameter-changing portion without using the diameter-changing portion bonding material 4 or fused. You may join by a wearing means, an adhesive agent, etc. Further, the cylindrical members for the constant diameter portion are also directly joined to each other by the concave-convex fitting structure provided in the cylindrical member for the constant diameter portion without using the constant diameter portion bonding material 3, or a fusion means, an adhesive, or the like. May be joined.

  Moreover, in the above embodiment, although the example which lined the inner peripheral surface of the diameter change part Pc of the cavity structure P toward the large diameter side from the small diameter side was shown, this invention is not limited only to this. . Conversely, the inner peripheral surface of the diameter changing portion Pc may be lined from the large diameter side toward the small diameter side. In this case, for example, a plurality of diameter change portion cylindrical cones 2 are arranged in the axial direction in the descending order of the diameter of the large diameter portion 2L inside the diameter change portion Pc, and between the adjacent diameter change portion cylindrical cones 2. Can be joined.

  Furthermore, in the above embodiment, in order to line the inner peripheral surface of the rectangular cavity structure P, an example in which the present invention is applied has been described. However, the inner peripheral surface of a circular or horseshoe-shaped cavity structure is used. It is also possible to apply the invention for lining. Needless to say, the present invention is applicable not only to existing pipes but also to linings of new pipes.

DESCRIPTION OF SYMBOLS 1 Lining material for diameter change parts 1a 1st fitting part 1d Both ends of the longitudinal direction of the lining material for diameter change parts 1L One side edge of the lining material for diameter change parts 1R The other side edge of the lining material for diameter change parts 2 Diameter Cylindrical cone for change portion 2L Large diameter portion of cylindrical cone for diameter change portion 2R Small diameter portion of cylindrical cone for diameter change portion 3 Joint for constant diameter portion 3a Fourth fitting portion 3d For constant diameter portion Both ends in the longitudinal direction of the joining material 4 Joining material for the diameter changing portion 4a Second fitting portion 4d Both ends in the longitudinal direction of the lining material for the bending portion 6 Lining material for the constant diameter portion 6a Third fitting portion 6d Constant diameter portion Both ends of the lining material for the longitudinal direction 7 Cylindrical body for constant diameter part 100 Lining structure P Cavity structure Pa, Pb Constant diameter part Pc Diameter changing part

Claims (9)

A lining method for lining an inner peripheral surface of a hollow structure having a diameter changing portion that changes so that an inner diameter is enlarged or reduced,
A belt-shaped lining material for a diameter-changing portion having a constant width curved in an arc shape by making the curvature radius of one side edge and the other side edge different from each other in the width direction is processed into a predetermined length and then curved in the thickness direction. The diameter-changing portion cylindrical cones obtained by joining both end portions in the longitudinal direction are gradually enlarged or reduced in diameter between the large diameter portions and the small diameter portions of each cylindrical cone. A process of forming a plurality,
Arranging a plurality of cylindrical cones for the diameter changing portion in the axial direction in order of decreasing diameter of the small diameter portion or increasing diameter of the large diameter portion inside the diameter changing portion of the hollow structure; ,
A step of joining the cylindrical cones for the diameter change portion adjacent to each other inside the diameter change portion. In the lining method according to claim 1,
A step of forming a plurality of cylindrical bodies for constant diameter portions obtained by curving a straight strip-shaped diameter constant portion lining material having a constant width and joining both ends in the longitudinal direction;
A step of arranging a plurality of cylindrical bodies for a constant diameter part in the axial direction inside a constant diameter part having a constant inner diameter of the hollow structure,
Joining the cylindrical bodies for the constant diameter part adjacent to each other inside the constant diameter part;
A step of joining between the adjacent diameter-changing-portion cylindrical cone and the diameter-changing-portion cylindrical body inside the boundary portion between the diameter-changing portion and the diameter-constant portion. Characteristic lining method. In the lining method according to claim 2,
A first fitting portion provided at both ends of the cylindrical cone for the diameter changing portion and a second fitting portion provided at both ends in the width direction of the band-shaped diameter changing portion bonding material are fitted. And a process of
And further joining both ends in the longitudinal direction of the bonding material for diameter changing portion,
A lining method characterized by joining the cylindrical cones for the diameter-changing portion adjacent to each other inside the diameter-changing portion with the joint material for the diameter-changing portion. In the lining method according to claim 3,
A third fitting portion provided at both ends of the cylindrical body for the constant diameter portion is fitted to a fourth fitting portion provided at both ends in the width direction of the band-shaped constant diameter portion bonding material. Process,
A step of joining both ends in the longitudinal direction of the bonding material for a constant diameter portion;
A step of fitting the second fitting portion of the bonding material for diameter changing portion and the fourth fitting portion of the bonding material for constant diameter portion;
The cylindrical members for constant diameter part adjacent to each other inside the constant diameter part are joined by the joining material for constant diameter part,
Between the diameter-changing portion cylindrical cone and the diameter-changing portion cylindrical body adjacent to each other inside the boundary portion between the diameter-changing portion and the constant-diameter portion, the diameter-changing portion bonding material and the constant-diameter portion A lining method characterized by joining with a joint material for parts. A lining structure that is assembled inside the hollow structure to line the inner peripheral surface of the hollow structure having a diameter changing portion that changes so that the inner diameter is enlarged or reduced.
Curved in an arc shape have different radii of curvature of the one side edge and the other side edge in the width direction, comprising a strip of diameter change portion for the lining material at a constant width,
Predetermined length formed the diameter change portion for the lining material, be bonded both end portions in the longitudinal direction is curved in the thickness direction, and the diameter change section tubular cone by the lining material is formed And
Cylindrical cone for the diameter change portion is not provided in a plurality, the diameter of the diameter and small-diameter portions of the large diameter portion of the respective tubular cone is different so as to gradually enlarged or reduced,
A plurality of the cylindrical cones for the diameter changing portion are arranged in the axial direction in the order from the small diameter of the small diameter portion or the large diameter of the large diameter portion inside the diameter changing portion of the hollow structure . A lining structure characterized in that the adjacent cylindrical cones for a diameter changing portion are joined in a state. In the lining structure of Claim 5,
Equipped with a straight strip-shaped lining material with a constant width and a constant diameter ,
The constant diameter portion for the lining material, be bonded both end portions in the longitudinal direction is curved, and a constant diameter portion tubular body by the lining material is formed,
A plurality of the cylindrical bodies for the constant diameter portion are provided,
In the state where the plurality of cylindrical bodies for constant diameter portion are arranged in the axial direction inside the constant diameter portion where the inner diameter is constant, between the adjacent cylindrical bodies for constant diameter portion. They are joined,
The lining characterized in that the inside of the boundary portion between the diameter changing portion and the constant diameter portion is joined between the adjacent cylindrical cone for the diameter changing portion and the cylindrical body for the constant diameter portion. Structure. The lining structure according to claim 6,
First fitting portions are provided at both ends of the cylindrical cone for the diameter changing portion,
It further includes a band-shaped bonding material for a diameter changing portion provided with second fitting portions at both ends in the width direction,
A state where the first fitting portion of the diameter change section tubular cone adjacent inside said diameter change portions, and each of the second fitting portion of the diameter change portion for the bonding material is fitted, respectively in, between the diameter change section tubular cone is joined by bonding material for the diameter change portion,
A lining structure characterized in that both ends in the longitudinal direction of the bonding material for diameter-changing portions are joined. The lining structure according to claim 7,
Third fitting portions are provided at both ends of the cylindrical body for the constant diameter portion,
It further comprises a band-shaped bonding member for a constant diameter portion provided with a fourth fitting portion at both ends in the width direction,
In a state in which said third engaging portion of the constant diameter portion tubular body adjacent the inside of the constant diameter portion, said fourth fitting portion of the constant diameter portion for bonding material is fitted, respectively, between the constant diameter portion tubular body is joined with the constant diameter portion for bonding material,
Both longitudinal end portions of the constant diameter portion for bonding material is bonded,
One of the cylindrical cones for the diameter changing part among the cylindrical cones for the diameter changing part and the cylindrical bodies for the constant diameter part adjacent to each other inside the boundary part of the diameter changing part and the constant diameter part. The first fitting portion is fitted with one of the second fitting portions of the diameter changing portion bonding material, and one of the third fitting portions of the cylindrical member for the constant diameter portion is the diameter. mated with one of the fourth fitting portion of the fixed portion for bonding material, and the other one of the first of the constant diameter portion for bonding material to the other of the second fitting portion of the diameter change portion for bonding material In a state where the four fitting portions are fitted, the diameter changing portion bonding material and the constant diameter portion bonding material are between the diameter changing portion cylindrical cone and the constant diameter portion cylindrical body. A lining structure characterized by being joined. Inside the diameter changing portion that changes so that the inner diameter of the hollow structure expands or contracts, the diameter changing portion is arranged in the axial direction in the order of decreasing the diameter of the small diameter portion or increasing the diameter of the large diameter portion. A lining material constituting a cylindrical cone that lines the inner peripheral surface of the lining material,
It is formed in a band shape with a constant width, and has a shape that is curved in an arc shape with different curvature radii on one side edge and the other side edge in the width direction,
In a state in which both ends in the longitudinal direction is curved in the thickness direction is attached, it constitutes the cylindrical cones which have a small diameter portion and the large diameter portion, lining material, characterized in that.

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