JP4405235B2 - Method for repairing inner wall surface of tubular structure - Google Patents

Description

The present invention, tubular constructs, e.g. according to the manhole or the inner wall surface repair how such existing sewer pipe.

  Concrete manholes, existing sewage pipes composed of fume pipes, etc. have deteriorated over the years, or the inner wall surface is corroded by hydrogen sulfide generated inside and sulfur oxides in rainwater, and also by earth pressure and vibration shock Cracks may occur. The progress of corrosion may progress to the collapse of manholes and sewer pipes, and cracks will lead to situations such as water leakage and water intrusion, leading to increased sewage throughput and land subsidence. For this reason, these cylindrical structures need to repair the inner wall surface in a timely manner according to the situation.

  As a method for repairing the inner wall surface of a manhole, for example, the methods described in the following Patent Documents 1 to 4 have been proposed.

  Patent Document 1 describes a method in which a panel-like plastic repair material having an adhesive layer on the outer surface is inserted into a manhole, and then the adhesive layer is pressed against the inner wall surface of the manhole to attach the repair material. Yes.

  In Patent Document 2, a thin plastic repair material is placed in a manhole so as to cover the inner wall surface with a gap, and then the liquid lining room temperature is placed in the gap between the inner wall surface and the repair material. A method of filling and curing a curable injectable material is described.

  Patent Document 3 discloses a manhole repair method for lining and repairing the inside of a manhole using a plastic thin cylindrical manhole repair material cut at one place in the vertical direction, and covers the straight wall portion of the inner wall surface of the manhole. Preparing a plurality of manhole repair materials and a manhole repair material for covering the slant wall, and reducing the diameter of the manhole repair materials so as to be in an overlapping state, and sequentially inserting the manhole repair materials into the manhole A stacking step for fitting and stacking, a diameter expanding step for expanding the diameter of the manhole repair material during or after the stacking step, and maintaining the manhole inner wall surface in a state of covering with a gap, an inner wall surface of the manhole, and the manhole repair material And a lining step in which the gap is filled with a liquid curable injection material for lining and cured. There.

The following Patent Document 4 discloses a plastic manhole inner surface-shaped cylindrical body in which a cylindrical portion covering the inner wall surface of the manhole and a shape portion matched to the manhole opening are integrated, and when installed in the manhole, the manhole Forming a manhole inner surface that is large enough to create a gap with the inner surface, flexible enough to bend and fold the tube, and has a plurality of protrusions on the outer surface of the tube The materials are listed .

JP-A-8-74280 JP-A-8-27822 JP-A-9-13410 JP 2001-248177 A

  As for the inner wall surface of the manhole repaired by the prior art described in Patent Documents 1 to 4, the plastic repair material is exposed to the inner wall surface side.

For plastic-made repair material, susceptible to temperature, in particular at the location where the temperature change in repeat occurs, such as manholes and sewer pipes, deformation is likely to occur, it progresses gradually deflected state.

  The object of the present invention is that the inner wall surface of a cylindrical structure such as a manhole or a fume tube is excellent in corrosion resistance compared to plastic or resin, and maintains its action permanently in an adverse environment. It is an object of the present invention to provide a method capable of easily and reliably bonding a ceramic panel to a wall of a built-in body, which can be covered with a ceramic panel. Although the present invention is particularly useful for sticking ceramic panels in this way, it is obvious that it can be applied to panels that are not made of ceramic, and is limited only to sticking ceramic panels. Is not to be done.

In order to achieve the above object, the invention described in claim 1 is a method for repairing an inner wall surface of a tubular structure, in which a plurality of panels are attached to the inner wall surface of the tubular structure to repair the inner wall surface. The panel attached to the inner wall surface is partially connected to the inner wall surface in a part of the inner wall surface to form a one-stage panel row, and can be annularly deformed. A strip and a carrier piece projecting from the inner wall surface of the belt-like holding piece, so that the carrier piece of the panel support material capable of shrinking and expanding is engaged with the upper part of the panel row. The diameter of the panel support member is expanded, an annular panel support groove having an arbitrary width is formed between the panel support member and the inner wall surface, and new panels are inserted one after another into the formed panel support groove. The next panel row is formed by connecting them in a continuous manner, and the panel support groove and panel are formed in the same manner. Carried upward to form columns successively, and wherein the covering the inner wall surface on the panel.

Adhesion of the adhesive for adhering the panel to the inner wall surface of the cylindrical structure may be performed by attaching an adhesive to the outer peripheral surface of the panel in advance, or after forming the panel row, You may carry out in the form which inject | pours an adhesive injection material before or in the middle of giving the said pressing action to a row | line | column.

According to the repair method of claim 1, the operation of arranging the panels with respect to the wall surface of the built-in body is performed very easily, and the panel such as a ceramic panel is firmly held against the inner wall surface by the panel support material. The holding state is maintained until the adhesive exhibits its bonding performance, so that it is unstable before solidifying the injection material when attaching the panel to the vertical wall surface of the cylindrical structure or the downward wall surface. even in the state, without the need to separately install a large-scale apparatus for the panel supported by the cylindrical construction body, while preventing flaking and displacement of the panel, that thus reliably repaired panel construction body wall it can.

  After the adhesive is solidified, the panel support material may be removed as necessary. A void formed after removing the panel support material is filled with a suitable material and subjected to joint treatment. Moreover, the joint material between the adjacent panels in a panel row | line is filled with a suitable joint material as needed.

Panel is preferably a single member, may be the one panel by combining a plurality of panels piece puzzle formula in some cases.

Moreover, according to the repair method of Claim 1 , a panel hold | maintains the state with which the panel was arranged in the same height position by the support piece.

According to a second aspect of the present invention, a plurality of locking pieces are provided on an inner peripheral surface of one end edge region of the belt-shaped holding piece, and the other end edge portion of the belt-shaped holding piece is connected to the engagement member. It is performed by being locked to any one of the stop pieces .

According to the repair method of claim 2 , the belt-like holding piece itself has a function of maintaining the expanded diameter state, and therefore, the number of parts constituting the panel support material can be reduced and can be manufactured at low cost. it can.

According to a third aspect of the present invention, the expanded diameter is obtained by providing nut members each having a reverse screw cut on the inner peripheral surface of one end edge region and the inner peripheral surface of the other end edge region of the belt-shaped holding piece. The screw rod is screwed onto these nut members, and the screw rod is rotated .

According to repairing method according to claim 3, diameter of panel support, expanded maintained, it is possible to perform the operation of diameter easily by operating the threaded rod.

The invention according to claim 4 is characterized in that the carrier piece is formed so that the shape of the cross section in the radial direction of the panel support member is L-shaped .

According to the repair method of the fourth aspect , the panel can be pasted up to the end of the wall surface of the built-in body, for example, the range just below the lower end of the manhole vertical wall. Only a portion that is not covered by the panel is left in the range corresponding to the thickness portion of the carrier piece. When the L-shaped panel support material is later removed, the uncovered portion can be repaired without any problem by filling the gap formed in the portion where the carrier piece was present with a joint material.

The invention according to claim 5 is characterized in that the carrier piece is formed so that a shape of a cross section in a radial direction of the panel support member is a T-shape.

According to the repair method of claim 5 , the panel support groove can be easily formed on the newly formed panel row by the panel support material having a simple configuration. The upper part of the panel row is also firmly held by the panel support.

According to a sixth aspect of the present invention , a belt-like fastening piece is provided in parallel with the belt-like holding piece on the outer peripheral side of the carrier piece provided on the panel support member, and the shape of the radial cross section is an H-shape. Panel support grooves are formed on the upper and lower sides of the support piece, and the diameter of the lower panel support grooves is engaged with the upper portion of the lower panel row, and then the upper panel support is performed. The panel is inserted into the groove to form the panel row, and then the diameter of the panel support member is reduced, and the panel row in the panel support groove is pressed radially inward by the strip-shaped fastening piece. And the pressing force reduces the diameter of the ring of the annular panel row, and the adjacent panels are forcedly brought into contact with each other.

According to the repair method of Claim 6 , after forming a panel row | line | column using a panel support material, by reducing the diameter of this panel support material, it was connected in the shape of a ring similarly to the effect by the soot of a barrel. The panel row is tightened in the circumferential direction, the degree of adhesion between adjacent panels is increased, and the effect of preventing the injection material injected into the panel row outer peripheral side from leaking out from the butt portion between the panels is enhanced.
Further, after the panel support member is installed on the wall surface of the built-in body and the panel is placed via the panel support member, the degree of adhesion between the panels is enhanced by the action of the band-shaped fastening pieces due to the reduced diameter of the panel support member. In addition, consistency between the inner surface of the formed panel row and the inner surface of the panel row formed thereon is achieved.

According to a seventh aspect of the present invention, the panel has a substantially rectangular shape in plan view having left and right side end faces and a top end face and a bottom end face extending in a lateral direction with respect to the side end faces. When inserted into the groove, the lower end surface is brought into contact with the carrier piece.

According to the repairing method of claim 7 , when the panel is inserted into the panel support groove, the lower end face is brought into contact with the carrying piece, so that the height position of the panel is kept constant, and the left side The end face and the right end face come into contact with each other, and the joint between them can be made highly sealed.

  In the present invention, the cylindrical structure means that the shape of the inner wall surface portion of the cross section of the structure includes a cylindrical shape, a square shape, and all other shapes, except when the shape is specified and described. is doing. Further, the present invention also includes a cylindrical structure having both a portion having a constant inner diameter and a portion having a changed inner diameter on the inner wall surface.

  According to the present invention, an effect is obtained that a panel, in particular, a ceramic panel can be attached to the wall surface of a concrete tubular structure in a simple and efficient manner, and therefore at a low cost within a short working time.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 shows a specific example of a panel support material 1 as an inner wall repair tool for a cylindrical construction body, in particular, a cylindrical construction body according to the present invention, and FIGS. A specific example is shown. Each panel support member has a belt-like holding piece 10 formed in an annular shape. In the specific example of FIGS. 2-4, it has the support piece 11 which protrudes from the strip | belt-shaped holding | maintenance piece 10 in the substantially orthogonal direction outward, and is extended along the strip | belt-shaped holding | maintenance piece.

  The panel support 1 is made of, for example, stainless steel, or FRP reinforced with carbon fiber or glass fiber, and is formed so as to be elastically deformable from a reduced diameter state to an expanded diameter state.

  The belt-shaped holding piece 10 is partly cut off from the annular ring, and the opposite edge portions 101 and 102 are provided at the divided portions, and these two edge portions are mutually connected in a reduced diameter state of the belt-shaped holding piece 10. It is made to overlap. These edge portions 101 and 102 are provided with means for maintaining the expanded state when the band-shaped holding piece 10 is expanded to a necessary extent. This means is a panel shown in FIGS. In the case of the support member 1, the support member 1 is formed by a plurality of locking pieces 103 provided on the end edge portion 101 located on the outer peripheral side with respect to the end edge portion 102 and the end edge 104 of the end edge portion 102. The locking piece 103 is formed by cutting up a part of the end edge portion 101 in the inner circumferential direction of the belt-like holding piece 10 so as to rise obliquely toward the end edge 105. The drawing shows a case where two locking pieces 103 are aligned in the width direction and two in the circumferential direction of the belt-like holding piece 10, but the number of each row can be arbitrarily selected as necessary. is there.

  FIG. 5 shows another specific example of the diameter-expanded state maintaining means. In this example, the means 12 includes a nut member 121 fixed to the inner peripheral surfaces of the edge portions 101 and 102 as shown in the figure. , 122, and a threaded rod 123 that is screwed onto these nuts. The screw rod 123 is provided with a screw portion 124 that is screwed to the nut member 121 and a screw portion 125 that is screwed to the nut member 122. Both screw portions 124 and 125 are opposite to each other like a right screw and a left screw. It is threaded in the direction of. Therefore, when the screw rod 123 is rotated with respect to its axis, the nut members 121 and 122 are moved away from each other, or moved toward each other and moved away from each other according to the direction of rotation. When the holding piece 10 is enlarged in diameter and moved in the approaching direction, the band-like holding piece 10 is reduced in diameter.

  In the case of the expanded diameter maintaining means 12 shown in FIG. 5, the means 12 may be provided in each of two or more divided portions provided in the belt-like holding piece 10.

  In the case of the panel support member 1 in FIG. 2, the carrier piece 11 protrudes from one side edge of the belt-like holding piece 10, and in the case of the panel support member 1 in FIG. 3, the width of the belt-like holding piece 10. Projects from the middle of the direction. Accordingly, the band-shaped holding piece 10 and the carrying piece 11 are L-shaped in the case of FIG. 2 and T-shaped in the case of FIG. In any case of the panel support member 1 shown in FIGS. 2 and 3, the supporting piece 11 is not provided on the end edge portion 102. Therefore, the edge portions 101 and 102 are superposed in contact with each other without being obstructed by the carrier piece 11.

  In the case of the panel support member 1 shown in FIGS. 2 and 3, the protrusion width or the protrusion length of the support piece 11 is such that the diameter of the panel support member 1 is increased and the outer peripheral edge 110 of the support piece 11 is changed to the inner wall surface of the cylindrical structure. In addition to the panel width dimension described below, a gap having a predetermined width is selected on the outer peripheral side of the panel. However, when actually working using the panel support member 1, it is not always necessary to press the outer peripheral edge 110 of the carrying piece 11 against the inner wall surface of the cylindrical structure.

  In the case of the panel support 1 shown in FIG. 4, the band-like fastening piece 13 having the same width as the band-like holding piece 10 is integrally formed substantially in parallel with the band-like holding piece 10 on the outer peripheral side of the carrying piece 11. In particular, the three pieces of the belt-like holding piece 10, the carrying piece 11, and the belt-like fastening piece 13 are H-shaped when viewed in a radial section including the axis of the panel support 1. A panel described later is inserted into the panel support groove 5 formed by the belt-like holding piece 10 and the belt-like fastening piece 13. The configuration other than the belt-like fastening piece 13 is substantially the same as the panel support 1 shown in FIG.

6 to 9 show an example of a ceramic panel 3 to be pasted to the inner wall surface of the tubular construct. The panel 3 has a substantially quadrangular shape in a plan view having two side end faces 31 and 32 and a top end face 33 and a bottom end face 34 in a direction orthogonal to the side end faces.

It is preferable that the outer peripheral surface 35 (refer FIG. 7 ) of the panel 3 has the curved surface substantially the same as the inner wall surface of a cylindrical structure. The inner peripheral surface 36 of the panel 3, substantially or have similar curved surface, or may be a flat surface as shown in FIG. 8 and the outer peripheral surface as shown in FIG.

  The left and right side portions 31 and 32 of the panel 3 have complementary shapes as shown in the figure, and when the side portions of the adjacent panels are abutted against each other, they complement each other and provide a refracted joint.

The complementary shapes, for example as shown in FIGS. 6-8, either the left and right side portions 31 and 32 line-symmetrically stepped, or, as shown in FIG. 9, the recessed groove on the left portion 31 310 and the right side portion 32 are preferably provided with a ridge 320 of a size that fits into the groove 310 in a male-female manner. Of course, the left and right structures may be reversed.

  The stepped or male-female complementary structure as described above may be provided on the top and bottom of the panel, particularly on the top and bottom end faces, if necessary.

Instead of the complementary joint configuration as described above, as shown in FIG. 10 , grooves 311 and 321 having a semicircular cross section are formed on the left and right side end faces of the panel 3 over the entire height, The grooves 311 and 321 may form one round hole when the left and right end surfaces are brought into contact with each other, and the rod body 37 may be inserted into the round hole.

  The rod body 37 has a rigid core body 371 made of metal or plastic, and an elastic coating 372 such as water-stopping rubber attached around the core body. The outer diameter of the elastic coating 372 is slightly larger than the inner diameter of the round holes (311 and 321). Therefore, when the rod body 37 is inserted into the round hole, the joint portion generated at the butted portion of the two panels is as follows. The sealing action provided by the compressed elastic coating 372 can completely prevent fluid leakage.

As shown in FIG. 7 , a groove 351 is formed on the outer peripheral surface 35 of the panel 3. This groove has a guide for directing the flow of the injection material in a desired direction when the adhesive injection material is injected into the gap provided on the outer peripheral side of the annular panel row formed by connecting the panels 3 as described later. The filling material is spread evenly throughout the gap.

  It is preferable that a large number of small protrusions or small protrusions (not shown) are formed on the outer peripheral surface 35 of the panel 3 at intervals. As described below, the small protrusions or ridges collide with the inner wall surface when pressed against the built-in wall surface by the panel support material, and between the panel and the inner wall surface. A void for injecting the injection material (adhesive) is formed.

  Although not shown in the figure, the panel 3 has an inner peripheral surface portion that faces the belt-shaped holding piece 10 when supported by the panel support member 1 by an amount substantially corresponding to the thickness of the belt-shaped holding piece 10. You may leave in the state retreated to the outer peripheral side. The receding inner peripheral surface portion is provided along the top and bottom of the panel 3. By doing in this way, when the inner wall surface of a cylindrical structure is covered with a panel using the panel support material 1, the inner peripheral surface of a panel and the inner peripheral surface of the strip | belt-shaped holding piece 10 are mutually flush. Become.

  The dimensions of the panel can be arbitrarily selected according to the target structure. As a general one, for example, the length is 20 to 40 cm and the thickness is about 2 cm.

  The ceramic panel 3 can be manufactured with various raw materials and blends, but preferably about 30% of sewage sludge incineration ash, about 35% of ceramic finely pulverized products (for example, tile chamotte), and about 35% of clay (porcelain clay). It is manufactured by blending. When manufactured with these raw materials, approximately 65% of the total raw materials become recycled products, resulting in products with a high recycling rate.

  Next, an embodiment of the present invention will be described in which the inner wall surface of a concrete cylindrical manhole 4 as a cylindrical structure is repaired with a ceramic panel.

First, the deteriorated surface layer portion of the inner wall surface of the manhole is scraped off by using a cutting machine as disclosed in, for example, JP-A-8-267444. The new manhole inner wall surface 40 (see FIG. 11 ) exposed by cutting is preferably dried by blowing air with a blower in order to improve the adhesiveness of the adhesive.

  In the first embodiment of the panel adhering method, first, the panel 3 is formed by continuously disposing the panel 3 with the adhesive on the outer peripheral side in the circumferential direction of the inner wall surface with respect to the inner wall surface 40, and then One of the panel support members 1 shown in FIGS. 1 to 5 is arranged corresponding to the panel row, and the diameter of the panel support member is expanded. As a result, the panel support member presses the panel against the inner wall surface, and the expanded diameter or spacing maintaining means 103, 104 (FIGS. 1 to 4) or the expanded diameter maintaining means 12 (FIG. 5) act to press the panel. To maintain. The panel support 1 may be removed when the adhesive is solidified and fully exhibits its adhesive performance. Also, joints formed between the panels are processed as described below.

  After the first row of panels is formed and pasted, the next row of panels is formed in the same manner as the first row, and in this way, a plurality of panels are successively formed so as to cover the entire wall surface of the construction body. Step panel rows are formed and attached. At that time, it is preferable that the joint position between the panels in the one-stage panel row and the joint position between the panels in the next-stage panel row are mutually inconsistent.

  In 2nd Embodiment of the panel sticking method, the panel support material 1 in any one of FIGS. 1-5 is arrange | positioned with the predetermined space | interval width with respect to the said construction internal wall surface 40, and then the said inner wall surface A panel row is formed by arranging the panels 3 in a continuous manner between the panel support material and the panel, and in this case, an adhesive is applied to the outer peripheral surface of the panel in advance as described above, or such an adhesive is used. In this case, after forming the panel row, an adhesive is injected between the panel row and the inner wall surface, and then the gap maintaining means 103, 104 (FIGS. 1 to 4) or the expansion of the panel support material 1 are expanded. The panel 3 is pressed against the inner wall surface 40 together with the adhesive by the diameter state maintaining means 12 (FIG. 5), and the pressing action is maintained until the adhesive is solidified. After the adhesive is solidified, the panel support 1 may be removed in the same manner as described above, and joints formed between the panels are treated in the same manner.

  The covering of the entire wall surface of the built-in body due to the formation of a plurality of panel rows, the state of joint misalignment, and the like are the same as in the case of the first embodiment.

Next, a third embodiment will be described with reference to FIGS. 11 to 18. As shown in FIG. 11 , for example, the L-shaped panel support material _1-1 is installed at the lowermost end of the vertical wall surface of the manhole 4. Installation, enlarged when the L-shaped panel support member 1 _-1 as shown in FIG. 2 was expanded in the state of the manhole and substantially coaxial with the manhole, the outer peripheral edge of the carrier strip 11 _-1 is close to the manhole wall 40 maintaining the expanded state of the panel support material 1 _-1 by the state maintaining means 103, 104 or 121 to 125. Thereby, the panel support member _1-1 is installed in a state where the panel support groove _5-1 is formed in an annular shape with respect to the inner wall surface 40 of the manhole. Even if the outer peripheral edge of the carrier strip 11 _-1 in the installed state have contact with the manhole wall 40, it may not be. It can be further expanded according to the panel support material 1 _-1 required when not in contact. In the drawing, 106 _-1 is a packing material made of rubber, is mounted on the outer peripheral surface of the belt-shaped holding piece 10 _-1.

Next, the bottom portion of the panel 3 _-1 panel support grooves 5 _-1 as shown in FIG. 12 is plugged, the bottom end face 34 of the panel are brought into contact with the bearing piece 11 _-1, whereby one The panel 3 _-1 is supported by the panel support member 1 _-1 . At that time, a gap 6 _-1 for injecting the injection material as described above is provided between the supported panel 3 _-1 and the inner wall surface 40 of the manhole. Then, thus the installed first second panel adjacent the panel, the left and right side end face in close contact with each other, are arranged in a similar manner to the panel support grooves 5 in _-1, the same manner panel is inserted into the panel support grooves 5 _-1 successively Te. Thus, the one-stage panel row formed in an annular shape by a plurality of panels covers the entire peripheral surface of the lower end portion of the vertical wall of the inner wall surface of the manhole.

In the thus formed panel columns, the left and right sides of adjacent panels, 6 to 8, by which is specially formed as shown in FIG. 9 or FIG. 10, the injection material in the following manner When injected to the outer peripheral side of the panel row, it is avoided that the injected material leaks out from the butt portion of the panel. Particularly when the configuration of FIG. 10 is used, a reliable joint treatment effect can be obtained.

Further, in the case of re-expanded the panel support member 1 _-1 after the panel column formation, against which the outer peripheral surface 35 of the panel 3 _-1 pushes the building body peripheral surface 40, projections on the outer circumferential surface 35 as described above If there is, an annular gap _6-1 is formed by this projection.

Then, the annular gap 6 _-1 formed in the panel row outer peripheral side, as shown in FIG. 13, infusate having adhesive properties is injected, the adhesive layer 7 _-1 is formed. The injection material is low-viscosity, for example, polyurethane resin, cyanoacrylate, silicone rubber, etc. can be used, especially epoxy with excellent durability, water resistance, acid resistance, chemical resistance, and resistance to microbial corrosion. Resins are preferred. In addition, composite materials such as resin cement can be used.

As shown in FIG. 7 , by providing the groove 351 on the outer peripheral surface of the panel, the flow of the injection material in the gap is given directivity, and the entire gap can be injected quickly and uniformly.

Injection of the injection material may be performed after installation of the following panel support member 1 _-2. In that case, a gap or a conduction path (not shown) through which the injection material can pass is formed between the carrier piece 11 _-2 and the manhole inner wall surface 40.

When the packing material 106 _-1 is attached to the outer peripheral surface of the belt-like holding piece 10 _-1 as described above, the diameter of the panel support material _1-1 is further expanded after the injection material is solidified, and the expanded diameter state is maintained. it can be made to the pressing actively in panels packing material 106 _-1, increasing the waterproofing effect in the joint portion of the panel bottom by packing material 106 _-1 by.

Although intended to keep the panel support member 1 _-1 in the case of using the packing material 106 _-1 as it left on the manhole, also possible to remove the panel support member 1 _-1 after solidification of the injection material , and the not wearing the packing material 106 _-1 on the outer circumferential surface of the belt-shaped holding piece 10 _-1 that case. Gap occurring after removal of the panel support member 1 _-1 is processed by filling the injection material similar to caulking material.

  Instead of injecting the injection material on the outer peripheral side of the panel row after the panel row is formed as described above, an adhesive layer is provided in advance on the outer peripheral surface 35 of the panel, and the panel support material is re-expanded after the panel row is formed. In this way, the panel may be pressed against the inner wall surface 40 and the adhesive layer may be compressed to adhere the panel to the inner wall surface.

After the first stage of the panel column as in the formation and the panel columns were allowed to adhere to the manhole wall 40, next panel column is formed as shown in FIGS. 14 to 16 in its upper portion . In the case of the next row of panels, a T-shaped panel support 1 _-2 (FIG. 3) is used.

As shown in FIG. 14, T-shaped panel support member 1 _-2 are manhole concentrically with diameter within the manhole 4, bearing pieces 11 _-2 rides on the panel row of first stage, and carrying piece outer periphery Is maintained in an expanded state when it contacts or approaches the manhole inner wall surface 40. Panel support grooves _5-2 are formed between the strip holding pieces _10-2 and manhole wall 40 of the panel support material 1 _-2 in this way.

To the formed panel support grooves _5-2, as in the case of the panel support grooves 5 _-1, as shown in FIG. 15, panel 3 _-2 plugged, manhole wall 40 are arranged annularly A second-stage panel row is formed so as to cover in a strip shape.

Then, the second stage of injection of the injection material into the annular gap _6-2 provided on the outer periphery of the panel row is performed, the second stage of the panel columns and manhole wall 40 is adhesive layer as in FIG. 16 _Glued through _7-2 .

If the keep panels stream forming and panel support member 1 _-2 after bonding as it is leaving the previously wearing the packing material 106 _-2 outer peripheral surface of the belt-shaped holding piece 10 _-2, the top end surface of the panel 3 _-1 and panel 3 increase the water stopping effect definitive bottom end surface of _-2. In this case, the panel support member 1 _-2 after injection material solidified expanded, by maintaining its expanded state by the expanded state maintaining means, waterproofing effect of the packing material 106 _-2 is further enhanced.

If the removal of the panel support material 1 _-2 packing material 106 _-2 not mounted, the panel support material 1 _-2 after panel row forming and adhesive is removed, a gap occurring after removal is filled with coking process.

FIG. 17 shows a case where the second row or the upper row of the panel row is formed using an H-shaped panel support member 3 _-3 (see FIG. 4). When using this H-shaped panel support member, and expanded the H-shaped panel support member 1 _-3 to a predetermined diameter, after maintaining its expanded state in the expanded state maintaining means, and the lower, for example, FIG. Before the solidification of the injection material to the 16th second stage panel 3 _-2 or before the injection of the injection material to the second stage panel 3 _-2 , it is formed by the band-shaped holding piece 10 and the fastening piece 13. The top side portion of the second-stage panel row is fitted into the annular panel support groove below the carrier piece 11. In this case, it is preferable that the same packing material _106-3 is mounted on the panel support groove side of the belt-shaped holding piece 10 and the belt-shaped fastening piece 13.

Next, the third-stage panel _3-3 is fitted into the panel support groove on the upper side of the carrying piece 11 in the same manner as described above to form a third-stage panel row.

If using the H-shaped panel support member 1 _-3, also was employed shows the expanded state maintaining means 5, after the panel row formation, the expanded state maintaining means panel support member 1 _-3 condensation By making the diameter, the band-like fastening piece 13 acts to tighten the ring of the annular panel row like a barrel collar, so that the degree of adhesion between the side end faces of adjacent panels increases, and injection at the butt portion The material leakage prevention effect increases.

  Such an effect is particularly effective when the inner wall of a structure such as a manhole is severely corroded and the inner wall must be cut deeper than expected. That is, when cutting is performed deeper than planned, the peripheral length of the inner wall surface generated by the cutting becomes larger than the peripheral length of the outer peripheral surface of the panel row when the existing panels are arranged, and the panel is placed on the inner wall surface. When pressed, the gap between the panels inevitably expands, and an injection material that is injected into the outer periphery of the panel row later leaks from the gap. In such a case, if the above-mentioned H-shaped panel support is used, it is possible to bring about the effect of tightening the ring of the panel row and bringing the adjacent panels into close contact with each other. The problem to be solved can be solved easily.

Next, an injection material is injected into the gap between the third-stage panel row and the inner peripheral wall surface of the manhole to form an adhesive layer _7-3 . In the case where the second-stage panel row has not been injected, injection into the corresponding gap is simultaneously performed, and the adhesive layer _7-2 is simultaneously formed. In that case, a conduction path for the injected material is formed between the outer periphery of the outer peripheral belt-shaped fastening piece 13 and the inner peripheral wall surface of the manhole.

Said 1st- 3rd embodiment may each be implemented independently, and may be implemented in various combinations according to a panel row formation location.

FIG. 18 shows a vertical vertical sectional view of the central portion of the manhole 4 whose inner wall surface has been repaired as described above. In the figure, 1 ₋₁ , 1 ₋₂ , 1 ₋₃ , 1 ₋₄ , and 1 ₋₅ are the first panel 3 ₋₁ , the second panel 3 ₋₂ , and the third panel 3 _{−3, respectively.} Panel support materials for the fourth stage panel 3 _-4 and the fifth stage panel 3 _-5 are shown. Reference numeral 8 denotes a sewer pipe connected to the manhole.

  Although the above-described embodiment of the method of the present invention relates to a manhole, it is obvious that the present invention can be carried out in the same manner for other tubular structures such as sewer pipes.

It is a perspective view which shows one Embodiment of the panel support material as a cylindrical construction | assembly body wall surface repair tool. It is a perspective view which shows other embodiment of a panel support material. It is a perspective view which shows other embodiment of a panel support material. It is a perspective view which shows other embodiment of a panel support material. It is a perspective view which shows embodiment of an expanded state maintenance means. It is a perspective view which shows one Embodiment of a panel. It is the perspective view which looked at the panel of FIG. 6 from the other side. It is a perspective view which shows other embodiment of a panel. It is a perspective view which shows other embodiment of a panel. It is a perspective view which shows the means for improving the sealing performance at the time of contact | abutting the panel side part. In one Embodiment of this invention method, it is the center longitudinal cross-section fragmentary view of the manhole which shows the state which attached the L-shaped panel support material in order to form the 1st step | paragraph annular panel row | line | column in the manhole inner wall surface. FIG. 12 is a central vertical cross-sectional partial view similar to FIG. 11 showing a step of inserting the panel into the installed L-shaped panel support material following the step of FIG. 11. FIG. 13 is a central vertical cross-sectional partial view similar to FIG. 11 showing a step of injecting an injection material into the outer peripheral side of the arranged panel row following the step of FIG. 12. 13 is a central longitudinal section similar to FIG. 12, showing a state in which a T-shaped panel support is attached to form a second panel row on the first annular panel row following the step of FIG. FIG. FIG. 15 is a central vertical cross-sectional partial view similar to FIG. 11, showing a step of inserting the panel into the installed T-shaped panel support material following the step of FIG. 14. FIG. 16 is a partial partial sectional view similar to FIG. 11 showing the step of injecting an injection material into the outer peripheral side of the arranged second-stage panel row following the step of FIG. 15. FIG. 12 is a central vertical cross-sectional partial view similar to FIG. 11 illustrating a case where an H-shaped panel support material is used when forming the second and subsequent panel rows. It is a center longitudinal cross-sectional view of the manhole by which the panel was stuck on the inner wall surface.

Explanation of symbols

1, 1 ₋₁ , 1 ₋₂ , 1 ₋₃ , 1 ₋₄ , 1 ₋₅ Panel support member 10, 10 ₋₁ , 10 ₋₂ Band _- shaped holding piece 101, 102 Opposing edge 103 Locking piece 104, 105 Edge 106 _-1 , 106 _-2 , 106 _-3 Packing material 11, 11 _-1 , 11 _-2 carrying piece 110 Outer peripheral edge 12 Expanded state maintaining means 121, 122 Nut member 123 Screw rod 124, 125 Thread 13 Strip fastening pieces 3, _3-1 , _3-2 , _3-3 , _3-4 , _3-5 Panel 31, 32 Side end face (31 left side, 32 right side)
310, 311, 321 Concave groove 320 ridge 33 top end surface 34 bottom end surface 35 outer peripheral surface 351 groove 36 inner peripheral surface 37 rod body 371 rigid core 372 elastic coating 4 manhole 40 manhole inner wall surface 5 _-1 , _5-2 panel support Groove 6 _-1 , _6-2 Annular gap 7 _-1 , 7 _-2 , 7 _-3 Adhesive layer 8 Sewer pipe

Claims (7)

In the method of repairing the inner wall surface of the tubular structure, in which a plurality of panels are attached to the inner wall surface of the tubular structure to repair the inner wall surface,
The panel attached to the inner wall surface is partially connected to the inner wall surface in a circumferential direction of the inner wall surface to form a one-stage panel row,
An annularly deformable belt-like holding piece and a carrying piece protruding from the inner wall surface of the belt-like holding piece, and the carrying piece of the panel support material capable of reducing and expanding the diameter is the panel row. The diameter of the panel support member is expanded so as to engage with the upper portion, and an annular panel support groove having an arbitrary width is formed between the panel support member and the inner wall surface,
Insert new panels one after another into the formed panel support groove, and form a panel row of the next stage by arranging them consecutively,
A method of repairing an inner wall surface of a cylindrical structure, wherein the same panel support groove and panel row are formed one after another, and the inner wall surface is covered with a panel. The enlarged diameter is obtained by providing a plurality of locking pieces on the inner peripheral surface of one end edge region of the band-shaped holding piece, and engaging the other end edge of the band-shaped holding piece with one of the locking pieces. The inner wall surface repair method according to claim 1, wherein the inner wall surface repair method is performed by stopping . The enlarged diameter is provided with nut members each having a reverse thread on the inner peripheral surface of one end edge region and the inner peripheral surface of the other end edge region of the belt-shaped holding piece, and screw rods are provided on these nut members. The inner wall surface repair method according to claim 1, wherein the inner wall surface repairing method is performed by screwing and rotating the screw rod . The inner wall surface repair method according to any one of claims 1 to 3 , wherein the carrier piece is formed such that a shape of a cross section in a radial direction of the panel support member is L-shaped . The inner wall surface repair method according to any one of claims 1 to 3 , wherein the carrier piece is formed so that a shape of a radial cross section of the panel support member is a T-shape . A panel-like fastening piece is provided on the outer peripheral side of the carrying piece provided on the panel support member in parallel with the belt-like holding piece, and the shape of the radial cross-section is made H-shaped to support the panel above and below the carrying piece. Forming a groove and engaging the lower panel support groove with an upper portion of the lower panel row, and then inserting the panel into the upper panel support groove and inserting the panel into the panel Forming a row, then reducing the diameter of the panel support member, and applying a pressing force inward in the radial direction to the panel row in the panel support groove by the strip-shaped fastening piece, and by this pressing force, the annular panel The inner wall surface repair method according to any one of claims 1 to 3 , wherein the ring of the row is reduced in diameter and the adjacent panels are forcedly brought into contact with each other. The panel has a substantially rectangular shape in plan view having left and right side end faces and a top end face and a bottom end face extending laterally with respect to the side end faces, and when inserted into the annular panel support groove, The inner wall surface repair method according to any one of claims 1 to 6 , wherein the lower end surface is brought into contact with the carrying piece.

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