JP5249263B2 - Hollow pipe reinforcement sheet affixing method - Google Patents

Description

  The present invention relates to a method of attaching a cylindrical reinforcing sheet from a side surface to an inner wall of a hollow pipe body such as a utility pole, a steel tower, gas or liquid piping.

Conventionally, in order to reinforce an obsolete utility pole or the like, reinforcing bars have been placed inside the utility pole and mortar has been placed. However, the method of placing reinforced mortar with a reinforcing bar usually requires a process of making a hole in the top of the utility pole and inserting the reinforcing bar through the hole, which is inferior in workability and great danger. On the other hand, the inventor of the present application has proposed a construction method in which a cylindrical reinforcing sheet is inserted into a hole provided on a side surface of a utility pole and attached to the inner wall of the utility pole instead of a reinforcing bar in the following patent document.
Specifically, a hole is made in the side surface of the electric pole, and the head fixing device and the bottom fixing device that are engaged with the inner wall of the electric pole by the balloon body are pushed through the hole with wires at the upper and lower portions of the inner wall of the electric pole. It is fixed by putting air inside the balloon body. The engaged portion provided in the head fixing device and the bottom fixing device is provided with a wire in advance so as to be exposed from the hole, and the wire is used to move between the head fixing device and the bottom fixing device. In such a manner, the adhesive is applied by spraying the inner wall of the utility pole through the spray nozzle. Thereafter, the ejection nozzle is taken out, tied to the upper end and lower end of the reinforcing sheet to the wire, and pulled to engage the engaging members provided at the upper and lower ends of the reinforcing sheet with the engaged parts of the head fixing device and the bottom fixing device. Engage with and fix. Finally, the reinforcing sheet can be attached to the utility pole by inflating the inside of the reinforcing sheet with air and attaching it to the inner wall.

Japanese Patent No. 4157149

By the way, in the above construction method, the adhesive is sprayed onto the inner wall of the electric pole with the spray nozzle and the reinforcing sheet is pressed against the inner wall of the electric pole, so that only the contact surface of the reinforcing sheet with the electric pole is impregnated with the adhesive. However, from the viewpoint of reinforcement, the strength can be increased by impregnating the adhesive into the reinforcing sheet and curing it.
In view of such a problem, an object of the present invention is to allow an adhesive to be impregnated into a reinforcing sheet in a method of attaching a cylindrical reinforcing sheet inside a hollow pipe body.

In order to solve the above problems, the present invention has the following configuration.
The invention according to claim 1 is a method of attaching a cylindrical reinforcing sheet to the hollow pipe body in order to reinforce the hollow pipe body, and has the following requirements (101) to (106): This is a body reinforcing sheet affixing method.
(101) A reinforcing sheet compression bag in which the reinforcing sheet is folded into a bag formed of an airtight sheet and compressed by removing the air inside. In addition, as long as the airtight sheet is an airtight sheet body, any material can be used, such as a synthetic resin sheet, a synthetic rubber sheet, and a sheet made of a composite material obtained by vapor-depositing metal on a synthetic resin sheet. be able to.
(102) The reinforcing sheet compression bag is provided with a first series of openings that communicate with the interior of the valve body.
(103) An insertion step of inserting the reinforcing sheet compression bag into the hollow pipe body from a pilot hole which is a hole communicating with the inside of the hollow pipe body provided on the side surface of the hollow pipe body.
(104) After the insertion step, an adhesive impregnation step of allowing an adhesive to flow in from the first series of openings and impregnating the reinforcing sheet inside the reinforcing sheet compression bag with the adhesive. In order to allow the adhesive to flow from the first series of openings, in (103), the first series of openings can be exposed from the pilot holes, or the length that can be exposed from the pilot holes to the first series of openings. What is necessary is just to connect the pipe which has this beforehand.
(105) After the adhesive impregnation step, a bag body removing step of taking out the bag constituting the reinforcing sheet compression bag from the pilot hole is provided.
(106) It has a reinforcement sheet sticking process of applying a force from the inside of the reinforcement sheet to the outside and sticking the reinforcement sheet into the hollow pipe after the bag body taking-out process.

The invention according to claim 2 is the hollow pipe body reinforcing sheet affixing method, wherein the first series opening is provided on one end side of the reinforcing sheet compression bag and on the other end side of the reinforcing sheet compression bag. Is provided with a second communication port that communicates with the inside of the valve body, and in the adhesive impregnation step, the second communication port side is opened at the same time as the adhesive is allowed to flow in from the first series of communication ports. Or it sucks with a pump. In order for the second communication port side to be opened or sucked by a pump, in (103), the second communication port can be exposed from the pilot hole, or the second communication port can be exposed from the pilot hole. What is necessary is just to connect the pipe which has this beforehand.
A third aspect of the present invention is the hollow pipe reinforcing sheet affixing method according to the second aspect, wherein the second suction port is sucked with a pump, and the adhesive sucked with the pump is the first by using the adhesive that flows from the communication port, in which circulates the glue by the reinforcing sheet in the compression bag.

The invention according to claim 4 is the hollow pipe reinforcing sheet sticking method according to claim 2 or 3, wherein after the adhesive is impregnated, a certain amount of adhesive is flown from the first series of openings. The reinforcing sheet compression bag recompression process is performed by closing either one of the first communication port or the second communication port and sucking with a pump from the other side.
According to a fifth aspect of the present invention, in the hollow pipe reinforcing sheet affixing method, the hollow pipe body is fixed in an upright state, and the first series of openings are formed in the reinforcing sheet compression bag. In the insertion step, the first series of openings are positioned on the upper side.

The invention according to claim 6 is a method of attaching a cylindrical reinforcing sheet to the hollow pipe body in order to reinforce the hollow pipe body, and has the following requirements (201) to (206). This is a body reinforcing sheet affixing method.
(201) A reinforcing sheet compression bag in which the reinforcing sheet is folded into a bag formed of an airtight sheet and compressed by removing the air inside.
(202) The reinforcing sheet compression bag is provided with a first series of openings that communicate with the interior of the valve body.
(203) An adhesive impregnation step of allowing an adhesive to flow in from the first series of openings and impregnating the reinforcing sheet inside the reinforcing sheet compression bag with the adhesive.
(204) After the adhesive impregnation step, an insertion step of inserting the reinforcing sheet compression bag into the hollow pipe body from a pilot hole which is a hole communicating with the inside of the hollow pipe body provided on the side surface of the hollow pipe body. Have.
(205) After the inserting step, a bag body extracting step of taking out the bag constituting the reinforcing sheet compression bag from the pilot hole.
(206) It has a reinforcement sheet sticking process of applying a force from the inside of the reinforcement sheet to the outside after the bag body taking-out process and sticking the reinforcement sheet into the hollow pipe body.

A seventh aspect of the present invention is the hollow pipe sticking method according to the sixth aspect, wherein in the adhesive impregnation step, after injecting the adhesive, the reinforcing sheet is compressed by a pump from the first series of openings. A bag recompression process is performed.
The invention according to claim 8 is the hollow pipe affixing method according to claim 7, wherein the first opening is provided at one end of the reinforcing sheet compression bag and the other end of the reinforcing sheet compression bag. On the side, a second communication port communicating with the inside provided with the valve body is provided, and in the reinforcing sheet compression bag recompression process, instead of suctioning with a pump from the first communication port, the first communication port The series of openings are closed and suction is performed from the second communication opening by a pump.
A ninth aspect of the present invention is the hollow pipe sticking method according to the sixth to eighth aspects, wherein, in the adhesive impregnation step, the adhesive sheet is introduced from the first series of openings, and then the reinforcing sheet compression bag is used. Pressure application processing is performed in which pressure is applied to the outside from the outside.

The invention described in claim 10 is a method of attaching a cylindrical reinforcing sheet to the hollow pipe body in order to reinforce the hollow pipe body, the hollow pipe having the following requirements (301) to (304): This is a body reinforcing sheet affixing method.
(301) A reinforcing sheet compression bag is used in which the reinforcing sheet is thinly folded and impregnated with an adhesive, and then placed in a bag formed of an airtight sheet, and compressed by removing the air inside.
(302) An insertion step of inserting the reinforcing sheet compression bag into the hollow pipe body from a pilot hole which is a hole communicating with the inside of the hollow pipe body provided on the side surface of the hollow pipe body.
(303) After the inserting step , there is a bag body taking-out step of taking out the bag constituting the reinforcing sheet compression bag from the pilot hole.
(304) It has a reinforcement sheet sticking process of applying a force from the inside of the reinforcement sheet to the outside after the bag body taking-out process and sticking the reinforcement sheet into the hollow pipe body.

Invention of Claim 11 is a reinforcement sheet compression bag used for the reinforcement sheet sticking construction method of any one of Claims 1-9, Comprising: A cylindrical reinforcement sheet and the said reinforcement sheet folded long and narrow A bag body formed of an air-tight sheet, and one or more communication ports communicating with the inside of the bag body provided with a valve body provided in the bag body, and the reinforcing member is provided in the bag body After the bag body is compressed by sucking air from at least one communication port in a state where a sheet is contained, all the valve members of the communication ports are closed.
A twelfth aspect of the present invention is a reinforcing sheet compression bag used in the reinforcing sheet sticking method according to the tenth aspect, wherein the cylindrical reinforcing sheet and the elongated folded reinforcing sheet are placed inside. The bag is formed by compressing the bag by sucking air in a state where the reinforcing sheet impregnated with an adhesive is contained in the bag, and then closing the inside. is there.

The invention according to claim 13 is the reinforcing sheet compression bag, wherein the reinforcing sheet is provided with an internal wire which is a wire connecting the inside and the outside, and the sealed state of the bag body is maintained. A part of the internal wire is exposed outside the bag body.
The invention according to claim 14 is that, in the reinforcing sheet compression bag, an operation wire as an operation wire is connected to an end of the bag, and the bag can be opened by operating the operation wire. An opening structure is provided.
The invention according to claim 15 is the reinforcing sheet compression bag, wherein a long balloon is inserted into the reinforcing sheet.

With the configuration as described above, the present invention has the following effects.
In the first aspect of the present invention, the reinforcing sheet is inserted into the hollow pipe while the reinforcing sheet is compressed in an elongated state by the reinforcing sheet compressing bag, so that it can be inserted from a thin pilot hole and adhered to the reinforcing sheet compressing bag. Since the adhesive of the reinforcing sheet is impregnated by flowing the agent, the adhesive can be impregnated into the reinforcing sheet relatively easily.
According to the second aspect of the present invention, the second communication port is provided, and when the adhesive flows in, the second communication port is opened or the second communication port is sucked with a pump to increase the flow rate of the adhesive. Work time can be shortened.
In the invention according to claim 3, the adhesive can be more uniformly impregnated in the reinforcing sheet by circulating the adhesive in the reinforcing sheet compression bag.
In the invention according to claim 4, after putting a certain amount of adhesive, one of the first communication port and the second communication port is closed and sucked with a pump from the other, whereby the internal pressure of the reinforcing sheet compression bag is And the reinforcing sheet compression bag is compressed by the external pressure, so that the adhesive can be impregnated more uniformly in the reinforcing sheet.
In the fifth aspect of the present invention, since the adhesive material falls downward due to gravity when the adhesive flows in from the first series of openings on the upper end side with the hollow pipe standing, the inflow speed is increased. Can do.

According to the sixth aspect of the present invention, since the adhesive sheet flows into the reinforcing sheet compression bag and the reinforcing sheet is impregnated with the reinforcing sheet compression bag outside the hollow pipe, the impregnated state is relatively reduced. It can be easily confirmed, and the number of work steps in which it is difficult to confirm the state after inserting the reinforcing sheet compression bag into the hollow pipe can be reduced.
According to the seventh aspect of the present invention, by recompressing the reinforcing sheet compression bag, the reinforcing sheet can be thinned and can be easily inserted from the pilot hole of the hollow pipe.
According to the eighth aspect of the present invention, the adhesive is introduced from the first continuous port on the one end side, and then sucked with a pump from the second communication port on the other end side, so that the adhesive is removed from the one end side to the other end. Since it moves by being pulled to the side, the adhesive can be impregnated inside the reinforcing sheet more evenly.
In the ninth aspect of the invention, the adhesive can be impregnated more uniformly in the reinforcing sheet by applying pressure from the outside of the reinforcing sheet compression bag after impregnating the adhesive.

  The invention according to claim 10 can reduce the work process at the work site by using the reinforcing sheet compression bag impregnated with the adhesive in advance at the factory.

According to the eleventh aspect of the present invention, the reinforcing sheet can be more reliably impregnated with the adhesive by the construction method according to the first to ninth aspects.
By using the invention according to claim 12 in the construction method according to claim 10, a reinforcing sheet impregnated with an adhesive can be easily pasted into the hollow pipe.
The invention according to claim 13 allows the internal wire leading to the inside of the reinforcing sheet to be exposed from the outside of the reinforcing sheet compression bag so that the internal wire is exposed from the pilot hole in the hollow pipe body reinforcing sheet affixing method. The work performed inside the reinforcing sheet from the internal wire connected to the inside of the reinforcing sheet can be facilitated after the bag body is taken out from the hollow pipe.
In the invention described in claim 14, since the opening operation of the bag body end portion can be performed from the operation wire, the reinforcing sheet is exposed by exposing the operation wire from the pilot hole in the hollow pipe body reinforcement sheet affixing method. The operation of taking out the compression bag from the pilot hole can be easily performed.

It is a perspective view of a reinforcement sheet. It is a perspective view of a reinforcing sheet compression bag according to Embodiments 1 and 2. (A)-(d) is a figure which shows typically the process of the reinforcement sheet sticking construction method which concerns on Embodiment 1. FIG. (A)-(d) is a figure which shows typically the process of the reinforcement sheet sticking construction method following FIG. (A) (b) is a figure which shows typically the process of the reinforcement sheet sticking construction method following FIG. (A)-(e) is a figure which shows typically the process of the adhesive agent impregnation process of the reinforcement sheet sticking construction method which concerns on Embodiment 2. FIG. 6 is a perspective view of a reinforcing sheet compression bag according to Embodiment 3. FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the present embodiment, a utility pole is used as the hollow pipe body. The reinforcing sheet affixing method for a hollow pipe body according to the present embodiment uses a reinforcing sheet compression bag in which a reinforcing sheet is enclosed and compressed.
First, the reinforcing sheet enclosed in the reinforcing sheet compression bag will be described. FIG. 1 shows a perspective view of the reinforcing sheet 40. The reinforcing sheet 40 is formed into a cylindrical body by rounding a sheet body composed of high-strength fiber fibers such as carbon fiber, aramid fiber, glass fiber, polyethylene, and vinylon, and sewing the joints together. It has an outer surface that matches a predetermined range surface of the inner wall surface of the utility pole to be reinforced. On the side surface of the reinforcing sheet 40, a communication pipe 42 made of a pipe body communicating with the inside is provided. Further, inside the reinforcing sheet 40, a long balloon body 50 having a cylindrical outer peripheral surface along the inner peripheral surface of the reinforcing sheet 40 is stored in advance, and is fixed to the reinforcing sheet 40 with a weak strength adhesive. ing. An air injection pipe 51 that communicates with the inside of the long balloon body 50 is provided at a position that matches the communication pipe 42 of the long balloon body 50 so as to pass through the communication pipe 42. Inside the long balloon body 50, a hollow internal wire 52 having flexibility and elasticity is fixed to the apex of the long balloon body 50, and the base end side passes through the inside of the air injection tube 51 to the outside. It is provided so that it may be exposed. Further, on the proximal end side of the internal wire 52, a wire fixing joint 52a for fixing a wire described later is provided. Further, the wire fixing joint 52a is provided with a valve body that opens when connected to the engaging joint. Several holes for introducing air into the long balloon body 50 are provided on the side surface of the internal wire 52, whereby the internal wire 52 also functions as an air injection tube.

  Next, the reinforcing sheet compression bag will be described. A perspective view of the reinforcing sheet compression bag F is shown in FIG. This reinforcing sheet compression bag F is obtained by enclosing a reinforcing sheet 40 in which a long balloon is inserted into the bag body 100 as shown in FIG. More specifically, the reinforcing sheet compression bag F is obtained by rounding the reinforcing sheet 40 to a thin outer diameter of about 80 mm, winding a vinyl sheet around the outer periphery, and closing the upper surface and side surfaces by laminating to form the bag body 100. It is a thing. This reinforcing sheet compression bag F is provided with a packing 101 for extending the inner wire 52 from the lower end side to the outside in a sealed state, and a lower connection adapter 102 formed with a reverse support valve for preventing the flow from the inside to the outside. An upper connection adapter 103 formed with a valve body that is opened by connecting to a joint that engages with the side surface on the upper end side is provided, and further, the upper end of the bag body 100 is torn when pulled by a certain force or more on the upper end A steel wire 104 serving as an operation wire provided so as to be opened is provided. This reinforcing sheet compression bag F is compressed to form an outer diameter of about 60 mm by removing air from the lower connection adapter 102 or the upper connection adapter 103 in a state where the proximal end portion of the inner wire 52 is closed. It is transported from the factory to the site.

Next, a reinforcing sheet sticking method for a hollow pipe body using the reinforcing sheet compression bag F will be described. The reinforcing sheet sticking method for the hollow pipe body includes (1) an insertion step, (2) an adhesive impregnation step, (3) a bag body removing step, and (4) a reinforcing sheet sticking step. Hereinafter, these will be described.
(1) Insertion step In this step, the reinforcing sheet compression bag F is pushed through a pilot hole provided in advance on the side surface of the utility pole. Specifically, as shown in FIG. 3A, the reinforcing sheet compression bag F wound around the reel 100A is pulled out from the reel 100A, and the inside of the hollow pipe body P is passed through the pilot hole 12 of the utility pole P from the tip. Go into. Insertion is completed with the base end of the reinforcing sheet compression bag F in the vicinity of the pilot hole 12. Note that a connecting pipe 103a having an opening / closing valve on the tip side is connected in advance to the upper connection adapter 103 on the upper end side of the reinforcing sheet compression bag F.

(2) Adhesive impregnation step In this step, an adhesive is injected into the reinforcing sheet compression bag F, and the internal reinforcing sheet 40 is impregnated with the adhesive. Specifically, as shown in FIG. 3 (b), in the insertion step, with the reinforcing sheet compression bag F inserted into the utility pole P, the connecting adapter 102 is used as a bifurcated tube. Metering pumps 20B1 and 20B2 are connected. A pail 20B1a containing an adhesive main agent is connected to the metering pump 20B1, and a pail 20B2a containing an adhesive curing agent is connected to the metering pump 20B2. In this state, the tip of the communication pipe 103a connected to the upper connection adapter 103 is opened, and the metering pumps 20B1 and 20B2 are operated to inject the adhesive and the curing agent into the bag body 100 while mixing them. As a result, the bag body 100 swells, and the reinforcing sheet 40 is impregnated with the mixed solution. When the mixed liquid is discharged to the outside through the communication pipe 103a, the operation of the metering pumps 20B1 and 20B2 is stopped, and the reinforcing sheet 40 is sufficiently impregnated with the adhesive after a while. This completes the adhesive impregnation step.

  Here, the adhesive and the curing agent are injected into the bag body 100 from the lower end side, but can also be injected from the upper end side through the communication pipe 103a. Alternatively, the adhesive may be circulated inside the bag body by injecting the adhesive from one end side with a metering pump and discharging it from the other end side again with the metering pump. In addition, when a certain amount of adhesive is injected into the bag body, the valve on the side where the adhesive is injected is closed, and the bag body is recompressed with the outside air by sucking air from the other end side, thereby bonding. The impregnation of the agent may be promoted. Further, a predetermined amount of adhesive may be injected from the upper end side while the lower end side is closed and the inside is substantially in a vacuum state. Since the reinforcing sheet has elasticity, it absorbs by expanding the volume increase due to the injection of the adhesive, thereby allowing the adhesive to penetrate into the reinforcing sheet.

(3) Bag body extraction process In this process, only the reinforcement sheet 40 is left in the utility pole P from the reinforcement sheet compression bag F, and the bag body 100 is taken out from the utility pole P. Specifically, after completion of the adhesive impregnation step, the connection adapter 102 and the metering pump are disconnected, and the lower end portion of the reinforcing sheet compression bag F is cut open as shown in FIG. The packing 101 is separated, and the upper end of the bag body 100 is opened by pulling the steel wire 104. Then, as shown in FIG. 3 (d), the bag body 100 is wound with the reel 100 </ b> B together with the communication pipe 103 a while being cut open from the lower end side of the bag body 100, and the bag body 100 is removed from the hollow pipe body P to the outside. . With the above operation, the reinforcing sheet 40 impregnated with the adhesive remains.

(4) Reinforcing sheet sticking step In this step, the reinforcing sheet 40 impregnated with the adhesive is stuck to the inner wall of the utility pole. First, the wire 30 made of a pipe having elasticity and flexibility is coupled to the wire fixing joint 52a provided at the distal end of the internal wire 52 of the reinforcing sheet 40, and the wire 30 is connected to the utility pole P as shown in FIG. By pushing in, the reinforcing sheet 40 is pushed into the inside of the utility pole. By adopting a material having sufficient elasticity for the internal wire 52 and the wire 30, the reinforcing sheet 40 exists in the utility pole P in a state of extending straight to some extent in the utility pole P. Then, in this state, the wire 30 is wound up by a certain amount, and as shown in FIG. 4B, the position of the pilot hole 12 and the position of the communication pipe 42 of the reinforcing sheet 40 are substantially matched. To fix. Then, the air pump 20A is connected to the proximal end of the wire rod 30 as shown in FIG. In this case, the side surface of the air injection pipe 51 is tied to prevent air from leaking. Since the wire 30 and the internal wire 52 are hollow, and holes are provided in the side surfaces of the internal wire 52, when air is introduced from the proximal end of the wire 30 by the air pump 20A, the air enters the long balloon body 50. As shown in FIG. 4C, the long balloon body 50 swells and presses the reinforcing sheet 40 against the inner wall of the utility pole P. Since the reinforcing sheet 40 is impregnated with an adhesive, the reinforcing sheet 40 is bonded to the inner wall of the utility pole P.
After the adhesive is sufficiently cured by holding in this state for a certain period of time, this time, the air of the long balloon body 50 is evacuated using the air pump 20A, and the reinforcing sheet 40 and the long balloon body 50 are bonded with a weak strength adhesive. Since they are bonded, the long balloon body 50 is separated from the reinforcing sheet 40 and is deflated by this operation. In this state, the wire 30 is pushed into the electric pole P so that the rear end side of the long balloon body 50 is positioned at the pilot hole 12 as shown in FIG. Then, the rear end portion of the long balloon body 50 is hooked and taken out from the inside of the communication hole 42 of the reinforcing sheet 40. In this state, the long balloon body 50 is pulled out from the communication hole 42, and is shown in FIG. As shown in FIG. At the same time, the internal wire 52 and the wire 30 are also extracted through the communication pipe 42. As shown in FIG.5 (b), the long balloon body 50, the internal wire 52, and the wire 30 are all taken out, and the reinforcement sheet sticking process is completed.

(Embodiment 2)
Next, the reinforcing sheet sticking method for the hollow pipe body according to the second embodiment will be described. The difference between the reinforcing sheet sticking method and the reinforcing sheet sticking method according to the first embodiment is that the reinforcing sheet is impregnated with the adhesive before the reinforcing sheet compression bag F is put into the hollow pipe. That is, the reinforcing sheet sticking method for the hollow pipe body according to the present embodiment includes (1) an adhesive impregnation step, (2) an insertion step, (3) a bag body taking step, and (4) a reinforcing sheet sticking step. Hereinafter, these will be described.

(1) Adhesive impregnation step In this step, the reinforcing sheet 40 is impregnated with an adhesive at a construction site. First, as shown in FIG. 6 (a), the reinforcing sheet compression bag F wound around the reel 10A is pulled out substantially horizontally, and as shown in FIG. 6 (b), the connection adapter 103 at one end is bifurcated. Using the body, the metering pump 20B1 to which the pail can 20B1a containing the main agent of the adhesive is connected and the 20B2 to which the pail can 20B2a containing the curing agent of the adhesive is connected are connected. In this state, the metering pumps 20B1 and 20B2 are operated, and the bag body 100 is injected into the bag body 100 while mixing the adhesive and the curing agent in such an amount that the reinforcing sheet 40 can be appropriately impregnated.

After the injection, the metering pumps 20B1 and 20B2 are removed, and the ring body 200 having an inner diameter of about 60 mm is passed through the reinforcing sheet compression bag F from the side where the adhesive is injected, and as shown in FIG. Move to the end side. Thus, the reinforcing sheet 40 is sequentially impregnated while the adhesive accumulated on one end side is pushed out to the other end side.
Thereafter, as shown in FIG. 6 (d), the suction pump 20C is connected to the connection adapter 102 on one end side, excess adhesive and air are removed, the reinforcing sheet compression bag F is thinned, and then the suction pump 20C is turned on. This step is completed when the reinforcing sheet compression bag F including the reinforcing sheet 40 impregnated with the adhesive as shown in FIG. 6 (E) is completed.

In addition, the side which inject | pours an adhesive agent may be from the connection adapter 102 side. Further, when the adhesive is injected or when the ring body 200 is passed, the other end where the adhesive is not injected may be opened or sucked by a suction pump. Moreover, when this other end side is not opened, the suction shown in FIG. 6D can be omitted by setting an appropriate amount of adhesive to be injected. Furthermore, since the reinforcing sheet 40 is rounded and thinned in the present embodiment, the pressure can be drawn from the outside by the ring body 200, but various methods can be taken as long as the pressure can be applied from the outside of the bag body. In addition, when the reinforcing sheet 40 is folded flat and sealed in the reinforcing sheet compression bag F, pressure may be applied by two rollers that sandwich the flat portion.

(2) Insertion step-(3) Bag body removal step-(4) Reinforcement sheet affixing step In the insertion step, the reinforcing sheet compression bag F containing the reinforcing sheet 40 impregnated with the adhesive described above is connected to the pilot hole of the utility pole. From the inside of the utility pole until only the base end is exposed from the pilot hole. After that, since it is the same as the bag body extracting step and the reinforcing sheet attaching step according to Embodiment 1 described above, the description is omitted.

(Embodiment 3)
In the second embodiment, the adhesive is injected into the reinforcing sheet compression bag F at the site, but in the present embodiment, the adhesive is sealed in advance at the factory, not at the site. For this reason, it is not necessary to provide the valve body for inject | pouring an adhesive agent in a reinforcement sheet | seat compression bag, and the enclosure reinforcement sheet | seat F2 as shown in FIG. 7 is used. The bag body 100A constituting the encapsulated reinforcing sheet F2 is provided only with a packing 101 for extending the inner wire 52 to the outside in a sealed state and a steel wire 104 for opening the upper end side. In a state where a part is opened, an adhesive and a curing agent having a long curing time are put into the bag from the opened position, and the adhesive and the curing agent of the reinforcing sheet 40 are impregnated, and then the air in 100 is removed from the opened part. After the entire body is thinned, the opening portion is closed.
The hollow pipe body reinforcing sheet affixing method using the encapsulated reinforcing sheet F2 includes only (1) an insertion process, (2) a bag body extraction process, and (3) a reinforcement sheet affixing process. Since this method is the same as the insertion step, the bag body removal step, and the reinforcing sheet affixing step in the second embodiment, the description thereof is omitted.

(Modification)
In the first and second embodiments, two communication ports that communicate with the inside of the reinforcing sheet compression bag F are provided, but even a single port can function.
Further, a packing 101 for extending the internal wire 52 passing through the inside of the reinforcing sheet 40 to the outside in a sealed state is provided in the reinforcing sheet compression bag F, but is connected to the internal wire 52 and fixed inside the bag body 100. By providing the portion, the tip of the internal wire 52 can be pulled out from the pilot hole when the bag body 100 is taken out, so that the structure of extending the internal wire 52 such as the packing 101 to the outside can be omitted.
Further, in Embodiments 2 and 3 described above, the reinforcing sheet compression bags F and F2 containing the reinforcing sheet impregnated with the adhesive are directly put into the electric pole, and then the bag body is taken out. A method in which only the portion of the reinforcing sheet 40 is put inside is also possible while tearing and removing the bag body immediately before 12.

Then, in the above embodiment, the upper end of the bag body 100 is opened by the steel wire 104 provided so that the upper end of the bag body 100 is broken and opened when pulled to the upper end with a certain force or more. Various changes are possible. For example, the heating wire is fixed to the upper portion of the bag body 100, the electric wire connected thereto is taken out from the pilot hole 12, and the bag body 100 is melted and opened by energizing it, or the upper portion of the bag body is Various methods such as making the lid closed with an electric lock, connecting the electric wire connected to the outside to the outside from the pilot hole 12, and energizing this to open and open the lid lock Can be considered.
Moreover, in this embodiment, although the reinforcing sheet compression bag F was hold | maintained inside the utility pole by the internal wire 52 and the wire 30, it is lifted and fixed to a head fixing device as shown by patent 4157149 gazette. It can also be fixed by a method.
Furthermore, in the said embodiment, although the reinforcing sheet 40 was pressed against the inner wall of the utility pole by inflating the long balloon body 50, the pressure inside the reinforcing sheet is increased by blowing air strongly from the communication pipe of the reinforcing sheet 40. Various methods can be employed such as pressing against the inner wall of the power pole or pressing against the inner wall of the power pole with a mechanical link mechanism or the like.

P Electric pole F, F2 Reinforcement sheet compression bag 12 Pilot hole 30 Wire rod 40 Reinforcement sheet 42 Communication hole 50 Long balloon body 52 Internal wire rod 100 Bag body 101 Packing 102 Lower connection adapter 103 Upper connection adapter 103a Connection pipe 104 Steel wire

Claims (15)

A method of attaching a cylindrical reinforcing sheet to a hollow pipe body to reinforce the hollow pipe body, the hollow pipe body reinforcing sheet attaching method having the following requirements (101) to (106).
(101) A reinforcing sheet compression bag in which the reinforcing sheet is folded into a bag formed of an airtight sheet and compressed by removing the air inside.
(102) The reinforcing sheet compression bag is provided with a first series of openings that communicate with the interior of the valve body.
(103) An insertion step of inserting the reinforcing sheet compression bag into the hollow pipe body from a pilot hole which is a hole communicating with the inside of the hollow pipe body provided on the side surface of the hollow pipe body.
(104) After the insertion step, an adhesive impregnation step of allowing an adhesive to flow in from the first series of openings and impregnating the reinforcing sheet inside the reinforcing sheet compression bag with the adhesive.
(105) After the adhesive impregnation step, a bag body removing step of taking out the bag constituting the reinforcing sheet compression bag from the pilot hole is provided.
(106) It has a reinforcement sheet sticking process of applying a force from the inside of the reinforcement sheet to the outside and sticking the reinforcement sheet into the hollow pipe after the bag body taking-out process. The first continuous port is provided on one end side of the reinforcing sheet compression bag, and a second communication port communicating with the inside provided with the valve body is provided on the other end side of the reinforcing sheet compression bag. ,
2. The hollow pipe reinforcing sheet sticking according to claim 1, wherein, in the adhesive impregnation step, the second communication port side is opened or sucked by a pump at the same time as the adhesive is introduced from the first series of ports. Construction method. The pump is sucked by the pump from the second communication port, and the adhesive sucked by the pump is used as the adhesive flowing in from the first serial port, so that the adhesive is contained in the reinforcing sheet compression bag . The hollow pipe body reinforcing sheet sticking method according to claim 2, wherein the hollow pipe body reinforcing sheet is circulated.   In the adhesive impregnation step, after a certain amount of adhesive has flowed from the first series of openings, either one of the first series of openings or the second communication opening is closed, and the other side is pumped. The hollow pipe body reinforcement sheet sticking method of Claim 2 or 3 which performs the recompression process of the reinforcement sheet compression bag to suck. The hollow pipe body is fixed in an upright state,
The first series opening is provided on one end side of the reinforcing sheet compression bag,
The hollow pipe body reinforcing sheet sticking method according to any one of claims 1 to 4, wherein, in the inserting step, the first series of openings is positioned at an upper portion. A method for attaching a cylindrical reinforcing sheet to a hollow pipe body to reinforce the hollow pipe body, the hollow pipe body reinforcing sheet affixing method having the following requirements (201) to (206).
(201) A reinforcing sheet compression bag in which the reinforcing sheet is folded into a bag formed of an airtight sheet and compressed by removing the air inside.
(202) The reinforcing sheet compression bag is provided with a first series of openings that communicate with the interior of the valve body.
(203) An adhesive impregnation step of allowing an adhesive to flow in from the first series of openings and impregnating the reinforcing sheet inside the reinforcing sheet compression bag with the adhesive.
(204) After the adhesive impregnation step, an insertion step of inserting the reinforcing sheet compression bag into the hollow pipe body from a pilot hole which is a hole communicating with the inside of the hollow pipe body provided on the side surface of the hollow pipe body. Have.
(205) After the inserting step, a bag body extracting step for taking out the bag constituting the reinforcing sheet compression bag from the pilot hole.
(206) It has a reinforcement sheet sticking process of applying a force from the inside of the reinforcement sheet to the outside after the bag body taking-out process and sticking the reinforcement sheet into the hollow pipe body.   The hollow pipe sticking method according to claim 6, wherein, in the adhesive impregnation step, after the adhesive is flown in, a reinforcing sheet compression bag recompression process is performed by sucking with a pump from the first series of openings. The first continuous port is provided on one end side of the reinforcing sheet compression bag, and a second communication port communicating with the inside provided with the valve body is provided on the other end side of the reinforcing sheet compression bag. ,
In the reinforcing sheet compression bag recompression process, instead of sucking with a pump from the first series of openings, the first series of openings are closed and sucked with a pump from the second communication opening. 7. A hollow pipe sticking method according to 7.   9. The pressure application process according to claim 6, wherein, in the adhesive impregnation step, after applying the adhesive from the first series of openings, pressure application processing is performed to apply pressure to the reinforcing sheet compression bag from the outside. Hollow pipe pasting method. A method for attaching a cylindrical reinforcing sheet to a hollow pipe body to reinforce the hollow pipe body, the hollow pipe body reinforcing sheet affixing method having the following requirements (301) to (304):
(301) A reinforcing sheet compression bag is used in which the reinforcing sheet is thinly folded and impregnated with an adhesive, and then placed in a bag formed of an airtight sheet, and compressed by removing the air inside.
(302) An insertion step of inserting the reinforcing sheet compression bag into the hollow pipe body from a pilot hole which is a hole communicating with the inside of the hollow pipe body provided on the side surface of the hollow pipe body.
(303) It has a bag body taking-out process which takes out the bag which constitutes the reinforcing sheet compression bag from the pilot hole after the inserting process .
(304) It has a reinforcement sheet sticking process of applying a force from the inside of the reinforcement sheet to the outside after the bag body taking-out process and sticking the reinforcement sheet into the hollow pipe body. A reinforcing sheet compression bag used for the reinforcing sheet affixing method according to any one of claims 1 to 9,
A tubular reinforcing sheet;
A bag formed of an air-tight sheet that encases the reinforcing sheet folded in an elongated shape;
Having one or more communication ports communicating with the inside of the bag body provided with a valve body provided in the bag body,
In a state in which the reinforcing sheet is contained in the bag body, the compressing bag body is compressed by sucking air from at least one communication port, and then the valve bodies of all the communication ports are closed. Reinforcing sheet compression bag used in the reinforcing sheet affixing method according to claim 10,
A tubular reinforcing sheet;
A bag formed of an air-tight sheet that encases the reinforcing sheet folded in an elongated shape;
Have
The reinforcing sheet compression bag, wherein the bag body is compressed by sucking air in a state where the reinforcing sheet impregnated with the adhesive is contained in the bag body, and then the inside is closed . The reinforcing sheet is provided with an internal wire that is a wire that communicates inside and outside,
The reinforcing sheet compression bag according to claim 11 or 12, wherein a part of the internal wire is exposed outside the bag body while the sealed state of the bag body is maintained.   The operation wire that is a wire for operation is connected to the end of the bag, and an opening structure that can open the bag by operation of the operation wire is provided. The reinforcing sheet compression bag according to any one of the preceding claims. The reinforcing sheet compression bag according to any one of claims 11 to 14, wherein a long balloon is inserted into the reinforcing sheet.

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