JP4157149B2 - Hollow concrete pole reinforcement structure and hollow concrete pole reinforcement method - Google Patents

Description

  The present invention relates to a technique for reinforcing a hollow concrete pole, and more particularly to a technique for reinforcing a hollow concrete pole from the inside.

Since hollow concrete poles such as utility poles are exposed to the outdoors for many years, they deteriorate under the influence of wind and rain. If such a hollow concrete pole is left as it is, an accident such as collapse may occur, so it is necessary to reinforce it. As a reinforcing method, a widely used method is a method in which a reinforcing member is wound around and fixed to the outer periphery of a hollow concrete pole as exemplified in Patent Document 7. However, when the outer periphery is reinforced in this way, it is difficult to reinforce the portion buried in the ground, and the appearance may change and the scenery may be damaged. Corresponding to this, the following Patent Documents 1 and 2 show a method of removing the top cover of the hollow concrete pole and inserting a reinforcing bar or the like from above and curing with mortar. 6 shows a method of making a hole in the side surface of the hollow concrete pole, inserting a rod-shaped reinforcing member through the hole, standing, and then hardening with mortar.
JP 2005-307479 A JP 2006-2543 A JP 2005-226337 A Japanese Patent Laying-Open No. 2005-330676 JP 2005-330677 A JP 2005-330678 A JP-A-5-332031

However, as in the construction methods described in Patent Documents 1 and 2 above, the work performed through the opening on the top surface of the hollow concrete pole is a work at a high place, and because the wires are nearby, it is a dangerous work. The work becomes large, such as requiring an operator at high altitude. On the other hand, in the construction methods described in Patent Documents 3 to 6, since a hole is made in the side surface of the hollow concrete pole and the work is performed from this hole, it is relatively safe and the work is simple. However, in the construction methods described in Patent Documents 3 to 6, there is a problem that reinforcement can be performed only from the position where the hole is made, and it is not possible to cope with deterioration above.
In view of the above problems, an object of the present invention is to make it possible to reinforce a hollow concrete pole from a side hole while reinforcing a portion above the side hole.

  In order to solve the above problems, the present invention has the following configuration.

Invention of Claim 1 is a hollow concrete pole reinforcement construction method provided with the requirements as described in the following (101)-(114).
(101) For a hollow concrete pole in which a high-strength fiber sheet is formed into a cylindrical shape, and is formed into a bag shape by sealing the upper and lower parts, and is provided with a first series of pipes that communicate with the interior Use an inner wall reinforcing sheet.
(102) A hollow concrete pole fixing device having a projecting portion that extends laterally and that is engaged with an inner surface of a hollow concrete pole having a predetermined inner diameter and a wire holding portion that holds the wire movably is used.
(103) The hollow concrete pole fixing device is fixed as a head fixing device on the inner upper portion of the hollow concrete pole, and the hollow concrete pole fixing device is fixed as a bottom fixing device on the inner lower portion of the hollow concrete pole. .
(104) An upper engagement member is provided at the upper end of the hollow concrete pole inner wall reinforcing sheet, and a lower engagement member is provided at the lower end.
(105) The head fixing device is provided with an upper engaged member that engages with the upper engaging member that moves by being pulled by a wire held by the head fixing device.
(106) The bottom fixing device is provided with a lower engaged member that engages with the lower engaging member that is pulled and moved by the wire held by the bottom fixing device.
(107) A coating nozzle having a predetermined shape for ejecting liquid to the side and connected to a liquid supply pipe is used.
(108) At least one wire holding portion of the head fixing device or the bottom fixing device can pass the application nozzle.
(109) The wire held by the head fixing device and the bottom fixing device is the same wire, and passes between the wire holding portion of the head fixing device and the wire holding portion of the bottom fixing device. ing.
(110) The coating nozzle is attached to a part of the wire so that the coating nozzle faces a direction of ejecting liquid laterally, the coating nozzle is moved by pulling the wire, and the coating nozzle is moved up and down in the hollow concrete pole. And a coating nozzle setting step for making it movable.
(111) After the coating nozzle setting step, an adhesive is supplied from a tube connected to the coating nozzle and sprayed from the coating nozzle, and the coating nozzle is moved up and down by pulling the wire or the tube. And an adhesive application step of applying the adhesive to the inner wall of the hollow concrete pole.
(112) After the adhesive application step, the upper end side of the hollow concrete pole inner wall reinforcing sheet is connected to a part of the wire, and the upper engaging member is attached to the head fixing device by pulling the wire. It has an upper engagement member engagement process which moves and engages with an engagement member.
(113) After the adhesive application step, a lower end side of the inner wall reinforcing sheet for hollow concrete pole is connected to a part of the wire, and the lower engaging member is engaged with the bottom fixing device by pulling the wire. A lower engaging member engaging step for moving and engaging the combined member;
(114) After the upper engaging member engaging step and the lower engaging member engaging step, the inner wall reinforcing sheet for hollow concrete poles is inflated by allowing gas to flow in from the first continuous pipe of the inner wall reinforcing sheet for hollow concrete poles. And a bonding step of pressing and bonding the inner wall reinforcing sheet for the hollow concrete pole against the inner wall of the hollow concrete pole.

The invention described in claim 2 is the hollow concrete pole reinforcing method according to claim 1, further having the requirements described in the following (201) and (207), and in the following (108) to (111) It is a hollow concrete pole reinforcement construction method provided with the requirements described in the following (201) to (206) instead of the described requirements.
(201) The inner wall reinforcing sheet for a hollow concrete pole is provided with the first continuous pipe at an upper portion or a lower portion, and a tubular body communicating with an inner portion of the upper concrete portion without the upper or lower continuous pipe. A second communication pipe is provided.
(202) After the upper engaging member engaging step and the lower engaging member engaging step, the inner wall reinforcing sheet for hollow concrete poles is inflated by injecting gas from the first series of pipes of the inner wall reinforcing sheet for hollow concrete poles. Expansion step.
(203) A nozzle wire is provided in advance from the first series pipe through the inside of the inner wall reinforcing sheet for hollow concrete pole to the inside of the second communication pipe.
(204) At least one of the first continuous pipe or the second communication pipe can pass the application nozzle.
(205) The coating nozzle is attached to a part of the nozzle wire so that the coating nozzle faces a direction of spraying the liquid laterally, the coating nozzle is moved by pulling the nozzle wire, and the coating nozzle is moved to the hollow concrete. There is a setting step in the application nozzle reinforcing sheet that allows the pole inner wall reinforcing sheet to move up and down.
(206) After the expansion step and the setting step in the coating nozzle reinforcing sheet, an adhesive is supplied from the tube connected to the coating nozzle and sprayed from the coating nozzle, and the wire for nozzle or the tube A reinforcing sheet adhesive application step of applying the adhesive into the hollow concrete pole inner wall reinforcing sheet by moving the application nozzle up and down by pulling.
(207) The adhesion step is performed after the reinforcing sheet adhesive application step.
According to a third aspect of the invention, the hollow concrete pole Retrofit of claim 2, a hollow concrete pole Retrofit with the requirements described in further (301) - (305).
(301) A mortar injection nozzle connected to a mortar pipe body that supplies a mortar liquid having a predetermined shape for injecting the mortar liquid to the side is used.
(302) At least one wire holding part of the head fixing device or the bottom fixing device can pass the mortar spray nozzle.
(303) After the reinforcing sheet adhesive coating step, pull the nozzle wire to take out the coating nozzle, remove it from the nozzle wire, and turn the mortar spray nozzle in the direction of spraying the mortar liquid to the side. After the mortar spray nozzle is attached to the mortar spray nozzle, the mortar spray nozzle is moved by pulling the nozzle wire so that the mortar spray nozzle can move up and down within the hollow concrete pole inner wall reinforcing sheet. It has a nozzle reinforcing sheet setting process.
(304) After the setting step in the mortar spray nozzle reinforcing sheet, the mortar liquid is supplied from the tube connected to the mortar spray nozzle and sprayed from the mortar spray nozzle, and the wire for nozzle or the mortar tube The reinforcing sheet mortar liquid applying step of applying the mortar liquid into the inner wall reinforcing sheet for the hollow concrete pole by moving the coating nozzle up and down by pulling.
Invention of Claim 4 is a hollow concrete pole reinforcement construction method provided with the requirements of the following (401) in the hollow concrete pole reinforcement construction method of Claim 2 or 3 .
(401) Instead of the bonding step or after the bonding step, the inner wall reinforcing sheet for hollow concrete pole with the adhesive or the mortar liquid is formed into a tubular and bag-like shape from the first continuous pipe. There is an inner wall reinforcing sheet pressing step of inserting the inner mold form made of balloons and inflating the inner mold form to press the inner wall reinforcing sheet for the hollow concrete pole against the inner wall of the hollow concrete pole.

The invention according to claim 5 satisfies the requirements described in the following (501) and (502) in the hollow concrete pole reinforcing method according to claim 1.
(501) Between the coating nozzle setting step and the adhesive coating step, the cleaning liquid is supplied from the tube connected to the coating nozzle and sprayed from the coating nozzle, and the wire or the tube is pulled to draw the wire. There is a cleaning step of spraying the cleaning liquid onto the inner wall of the hollow concrete pole by moving the coating nozzle along the top and bottom.
(502) It has the washing | cleaning liquid suction process which sucks out the washing | cleaning liquid collected on the bottom of the concrete pole after the washing | cleaning process.
The invention described in claim 6 satisfies the requirements described in the following (601) to (604) in the hollow concrete pole reinforcing method according to any one of claims 2 to 4 .
(601) At least one wire holding portion of the head fixing device or the bottom fixing device can pass the application nozzle.
(602) The wire held by the head fixing device and the bottom fixing device is the same wire, and passes between the wire holding portion of the head fixing device and the wire holding portion of the bottom fixing device. ing.
(603) Prior to the upper engagement member engagement step and the lower engagement member engagement step, the application nozzle is attached to a part of the wire so that the application nozzle faces in an appropriate direction, and the wire is pulled to make the application nozzle. A coating nozzle setting step of moving the coating nozzle so as to move up and down within the hollow concrete pole.
(604) Using the application nozzle set by the application nozzle setting step, the primer for adhesive is supplied from the tube connected to the application nozzle and sprayed from the application nozzle, and the wire or the tube is It has a primer application | coating process which moves the said application | coating nozzle along an up-down direction by pulling, and apply | coats the primer for adhesives to a hollow concrete pole inner wall.

The invention described in claim 7 further satisfies the requirements described in the following (701) and (702) in the hollow concrete pole reinforcing method according to claim 6 .
(701) Between the coating nozzle setting step and the primer coating step, a cleaning liquid is supplied from a tube connected to the coating nozzle and sprayed from the coating nozzle, and the coating is performed by pulling the wire or the tube. There is a cleaning step of spraying the cleaning liquid onto the inner wall of the hollow concrete pole by moving the nozzle along the top and bottom.
(702) After the cleaning step, the cleaning liquid sucking step for sucking out the cleaning liquid accumulated on the bottom of the concrete pole is included.
The invention according to claim 8 is the hollow concrete pole reinforcing method according to claim 5 or 7 , further comprising supplying air from a pipe connected to the application nozzle after the cleaning step. It has the drying process which sprays air on the hollow concrete pole inner wall by injecting from.

The invention according to claim 9 is a hollow concrete pole reinforcing structure formed by the hollow concrete pole reinforcing method according to any one of claims 1 to 8 .
The invention described in claim 10 forms a high-strength fiber sheet used in the hollow concrete pole reinforcing method according to any one of claims 1 to 8 in a cylindrical shape and seals the upper part and the lower part. The inner wall reinforcing sheet for a hollow concrete pole is formed in a bag shape, provided with a first continuous pipe that is a pipe that communicates with the inside at the top, and a second communication pipe that is a pipe that communicates with the interior at the bottom. It is.
Invention of Claim 11 is used for the hollow concrete pole reinforcement construction method of any one of Claims 1-8, The wire which consists of a detachable flexible pipe, The hydraulic pressure supplied from the said wire, or Hollow concrete comprising a balloon body that is formed so as to spread laterally by atmospheric pressure, and having a tension portion that is engaged with an inner surface of a hollow concrete pole having a predetermined inner diameter, and a wire holding portion that holds the wire movably. This is a pole fixing device.
The invention described in claim 12 is a construction method for fixing the hollow concrete pole fixing device described in (103) of claim 1 as a head fixing device and a bottom fixing device, from the following (1201) ( This is a fixing device fixing method in a hollow concrete pole having the requirements up to 1206).
(1201) The hollow concrete pole fixing device serving as the head fixing device and the bottom fixing device is provided with a detachable wire, and the stretched portion is spread laterally by being operated through the wire.
(1202) A step hole forming step of providing a step hole, which is a hole communicating with the inside, having a size that allows the head fixing device and the bottom fixing device to pass through on a side surface of the hollow concrete pole.
(1203) After the step hole forming step, the head fixing device is inserted from the step hole with the wire holding part holding the intermediate part of the wire, and both ends of the wire are out of the step hole. A head fixing device arranging step of positioning the wire rod into the upper part of the inner wall of the hollow concrete pole by pushing in the wire while maintaining the above.
(1204) After the head fixing device arrangement step, by operating the head fixing device through the wire, the stretched portion is widened to fix the head fixing device to the inner wall of the hollow concrete pole. A head fixing device fixing step of removing the wire;
(1205) After the step hole forming step, the bottom fixing device is inserted from the step hole with the wire holding part holding the intermediate part of the wire, and both ends of the wire are out of the step hole. There is a bottom fixing device arrangement step of positioning the wire rod into the lower part of the inner wall of the hollow concrete pole by pushing in the wire while maintaining.
(1206) After the bottom fixing device arranging step, the bottom fixing device is operated through the wire to widen the stretched portion and fix the bottom fixing device to the inner wall of the hollow concrete pole, and then remove the wire. A bottom fixing device fixing step;

According to the first aspect of the present invention, the inner wall reinforcing sheet can be bonded and fixed over almost the entire length inside the hollow concrete pole from the hole provided on the side of the hollow concrete pole.
The invention according to claim 2 is that the inner wall reinforcing sheet is formed of fibers and the adhesive can soak in, so that the inner wall reinforcing sheet is adhered to the hollow concrete pole by applying the adhesive from the inner wall reinforcing sheet. In addition, the inner wall reinforcing sheet can be reinforced by the adhesive.
The invention according to claim 3 can be further reinforced by fixing to the inner wall of the hollow concrete pole with an adhesive and further solidifying the inner wall reinforcing sheet with a mortar layer.
According to the fourth aspect of the present invention, the inner wall reinforcing sheet can be securely and firmly bonded to the inside of the concrete pole by pressing outward from the inner wall reinforcing sheet with the internal mold.
According to the fifth and seventh aspects of the present invention, since the inner wall of the hollow concrete pole is washed before the inner wall reinforcing sheet is bonded and fixed, the bonding can be performed more appropriately.
In the invention according to claim 6 , by applying a primer when applying the adhesive from the inside of the inner wall reinforcing sheet, the inner wall reinforcing sheet is easily adhered to the hollow concrete pole and more reliably adheres. be able to.
In the invention according to the eighth aspect , since air is blown and dried after cleaning, the operation can be quickly performed as compared with natural drying.

According to the ninth aspect of the present invention, the inner wall reinforcing sheet composed of the cylindrical high-strength fiber sheet can be made thin and bends freely. The hollow concrete pole can be installed over almost the entire length of the hollow portion, and the reinforcement work can be performed easily and safely. Further, it is possible to effectively reinforce the transverse shear failure of the hollow concrete pole.
The invention according to claim 10 is composed of a cylindrical high-strength fiber sheet, can be thinned, and bends freely, so that it is inserted through a hole provided in the side surface of the hollow concrete pole, and the hollow concrete pole hollow It can be installed over almost the entire length of the part, and the reinforcement work can be performed simply and safely. Moreover, the shape can be changed inside by inflating in the hollow concrete pole by sending air or the like from the communicating pipe exposed from the hole. Furthermore, by providing the first continuous pipe and the second communication pipe at the top and bottom, various operations can be performed in the inner wall reinforcing sheet through wires or the like in the inner wall reinforcing sheet from above and below.
Since the invention according to claim 11 has a configuration that spreads inside the hollow concrete pole, the hollow concrete pole is inserted into the hollow concrete pole by making a hole through which the fixing device for the hollow concrete pole can pass on the side surface. Furthermore, it can be fixed in the hollow concrete pole by spreading it laterally inside. Further, by removing the wire for operation, the wire does not get in the way, and further, the wire can be hung in the hollow concrete pole by hanging the wire on the wire holding portion. And, since the strut is operated by hydraulic pressure or atmospheric pressure, a large force can be transmitted from the outside to a relatively large extent.
The invention according to claim 12 can fix the fixing device for supporting the wire to the upper part and the lower part inside the hollow concrete pole from the hole provided on the side surface of the hollow concrete pole. Various operations can be performed over almost the entire length of the hollow concrete pole using the wire exposed from the hole on the side of the concrete.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In this embodiment, a utility pole is used as a hollow concrete pole.
(Embodiment 1)
First, the outline | summary of the reinforcement construction method of the hollow concrete pole which concerns on Embodiment 1 is demonstrated. The hollow concrete pole reinforcing method according to the present embodiment includes (1) step hole forming step, (2) head fixing device installation step, (3) bottom fixing device installation step, (4) cleaning step, and (5) adhesion. Agent coating step, (6) inner wall reinforcing sheet fixing step, (7) cylindrical reinforcing member installation step, (8) internal formwork installation step, (9) mortar placing step, and (10) scaffold bolt receptacle restoration step. .
(1) The step hole forming step is a step of forming a hole extending from the lifting / lowering scaffold bolt receiving portion on the side surface of the hollow concrete pole to be reinforced. (2) The head fixing device installation step is a step of installing the head fixing device on the inner wall upper part of the hollow concrete pole. (3) The bottom fixing device installation step is a step of installing a bottom fixing device on the bottom of the inner wall of the hollow concrete pole. (4) The cleaning step is a step of cleaning the inner wall of the hollow concrete pole. (5) The adhesive application step is a step of applying an adhesive to the inner wall of the hollow concrete pole. (6) The inner wall reinforcing sheet fixing step is a step of fixing the cylindrical inner wall reinforcing sheet to the inner wall of the hollow concrete pole. (7) The cylindrical reinforcing member installation step is a step of arranging and fixing the cylindrical reinforcing members inside the inner wall reinforcing sheet. (8) The internal mold installation step is a step of installing a hollow cylindrical mold in the center of the inner wall reinforcing sheet. (9) The mortar placing step is a step of filling and hardening the mortar inside the cylindrical reinforcing member and the inner wall reinforcing sheet. (10) The scaffold bolt receptacle restoration step is a step of restoring the scaffold bolt receptacle. Hereinafter, each process is explained in full detail.

(1) Step hole formation process First, it is a through hole that extends from the surface to the ground part within 2.0m above the ground using one place for lifting bolts for lifting and lowering formed on the side of the concrete pole as a utility pole. Form pilot holes. Specifically, as shown in Fig. 1 (a), using an electric drill D at the position of the lifting and lowering scaffolding bolt opening N formed on the side surface of the concrete pole P, point the drill with an outer diameter of about 5 m / m upward Then, two pilot holes 11 are formed by penetrating the drill downward as shown in FIG. Next, as shown in FIGS. 2 (a) and 2 (b), a special diamond core with an outer diameter of 50 m / m attached to the center tip is attached to the electric drill, and the center tip Is first inserted into an upward pilot hole and drilled upward to penetrate. Next, as shown in FIG. 2 (c), a drill at the center tip is inserted into the downward pilot hole and drilled downward to penetrate. Thereby, the step hole 12 as shown in FIG. 3 is formed.

(2) Head Fixing Device Installation Step (2-1) Structure of Head Fixing Device FIG. 4 is a front view of the head fixing device 20. The head fixing device 20 includes a jack 21 that forms a projecting portion that operates so as to project to the four sides by a link mechanism, and a piston cylinder that supplies a force that pushes up one end of the link from below to operate the jack 21. 22, a pressure hose 23 connected to the piston cylinder 22 for supplying hydraulic pressure, and a pulley 24 serving as a wire holding portion for holding the wire movably. A pin 22 a is erected on the side surface of the piston cylinder 22, and the pin 22 a is engaged with an L-shaped notch 21 aa formed at the lower edge of the cylindrical engagement tube portion 21 a provided at the lower end of the jack 21. It is fixed. As a result, when the pressure hose 23 is rotated in a predetermined direction, the piston cylinder 22 connected to the pressure hose 23 rotates and the pin 22a is removed from the notch 21aa, and the piston cylinder 22 and the pressure hose 23 fall off. The jack 21 is formed so as to maintain the position even if the piston cylinder 22 is detached. Further, rubber feet 21b for strengthening friction are provided at the corners of the jack 21 that protrude outward. Furthermore, the engagement cylinder part 21a is formed with a rectangular hole on both side surfaces and has a ring shape on the lower edge side. The pulley 24 is provided with an anti-skid member 24a made of an elastic body so that the wire does not fall off.

(2-2) Head Fixing Device Installation Method First, on the ground, with the pressure hose 23 and the piston cylinder 22 removed, the pulley 24 attached to the top of the head fixing device 20 is connected to the piano wire (parent wire). W1) is applied, and one end side is allowed to pass through the hole on the lower surface and the hole on the side surface of the engagement tube portion 21a attached to the lower part of the head fixing device 20. The end of the parent line W1 that passes through the engagement cylinder portion 21a is referred to as an upper parent line W1a, and the opposite end is referred to as a bottom parent line W1b. Further, another piano wire (strip line w) is hung on the pulley 24. The respective ends of the band line w are referred to as an upper band line wa and a lower band line wb. In this state, the pressure hose 23 and the piston cylinder 22 wound around the hose drum are connected to the engagement cylinder portion 21a. The rear end of the pressure hose 23 is connected to a hydraulic pump, and the pressure hose 23 is provided with a scale for measuring the length. Then, the head fixing device 20 is inserted upward from the step hole 12 as shown in FIG. 5A, and the pressure fixing hose 23 is pushed in as shown in FIG. Push up. While checking the scale of the pressure hose, stop the insertion when it reaches a predetermined position near the top, and operate the hydraulic pump on the ground as shown in Fig. 5 (c) to push out the piston in the cylinder to the jack In conjunction with this, the head fixing device 20 is fixed by the head of the concrete pole P. Thereafter, as shown in FIG. 5 (d), the pressure hose 23 is rotated in a predetermined direction to disengage the piston cylinder 22 from the cylindrical engagement portion 21a and remove the pressure hose 23 and the piston cylinder 22 in steps. The operation is completed after removing from the hole 12. Note that the upper parent line W1a, the lower parent line W1b, the upper band line wc, and the lower band line wd of the band line w are stepped through the pulley 24 of the head fixing device 20 through the step hole. 12 is exposed.

(3) Bottom Fixing Device Installation Step (3-1) Structure of Bottom Fixing Device FIG. 6 shows a front view of the bottom fixing device 30. The structure of the bottom fixing device 30 is substantially the same as the structure of the head fixing device 20, and has a structure in which the head fixing device 20 is turned upside down. That is, the bottom fixing device 30 includes a jack 31 that constitutes a stretched portion, a piston cylinder 22, a pressure-resistant hose 23, and a pulley 34 that constitutes a wire holding portion, and the piston cylinder 22 is provided at the upper end of the jack 31. While engaging with the upper edge of the cylindrical engagement cylinder part 31a, it forms so that it may drop by rotation of a predetermined direction. As will be described later, the piston cylinder 22 and the pressure-resistant hose 23 are the same as those constituting the head fixing device 20.

(3-2) Bottom Fixing Device Installation Method The installation method of the bottom fixing device 30 is substantially the same as the installation method of the head fixing device 20. The difference is that there is only one piano wire on the pulley 34. That is, first, on the ground, with the pressure hose 33 and the piston cylinder 32 removed, the pulley 34 attached to the lower part of the bottom fixing device 30 is exposed from the step hole 12 via the head fixing device 20. The bottom main line W1b is hung, and the hole on the upper surface and the hole on the side surface of the engaging tube portion 31a attached to the upper portion of the bottom fixing device 30 are passed. In this state, the piston cylinder 22 connected to the pressure hose 23 removed from the head fixing device 20 is connected to the engagement cylinder portion 31a, and the bottom fixing device 30 is inserted downward from the step hole (FIG. 7 (a )), The bottom fixing device 30 is pushed downward by pushing the pressure-resistant hose 23 (FIG. 7B). While confirming the scale of the pressure hose 23, the insertion is stopped at a predetermined position near the bottom surface, the ground hydraulic pump is operated, the piston in the cylinder is pushed out, and the bottom fixing device 30 is interlocked with the jack. Is fixed at the bottom of the concrete pole (FIG. 7C). Thereafter, the pressure hose 23 is rotated in a predetermined direction to disengage and remove the engagement with the cylindrical engagement portion 31a (FIG. 7 (d)), and the pressure hose 23 and the piston cylinder 22 are taken out from the step hole 12 to work. Is completed. Incidentally, the parent wire W1 of the piano wire is such that the upper parent wire W1a is exposed from the step hole 12 and passes through the inside of the hollow concrete pole P via the pulley 24 from the engagement tube portion 21a of the head fixing device 20. From the pulley 34 of the bottom fixing device 30 through the engagement cylinder portion 31a, the step hole 12 is exposed as the bottom parent line W1b.

(4) Cleaning process In the cleaning process, a small reverse spray nozzle is used as the application nozzle. The reverse injection nozzle has a structure in which the injection liquid is injected so as to form a conical side surface over the entire circumference in the rearward oblique direction with the supply direction of the injection liquid as the front. The reverse injection nozzle is large enough to pass through the pulley 34 and the elastic body 34 a of the bottom fixing device 30.
First, as shown in FIG. 8 (a), a bottom parent line W1b that passes through a bottom fixing device 30 that exposes the tip of a reverse injection nozzle G connected to a hose h serving as a tube for supplying a liquid from a step hole 12. Unite with. Then, as shown in FIG. 8B, the head parent line W1a that has passed through the head fixing device 20 is pulled to guide the reverse injection nozzle G into the hollow concrete pole, and the pulley 34 of the bottom fixing device 30 is further moved. The reverse injection nozzle G is positioned between the bottom fixing device 30 and the head fixing device 30. Thereby, the reverse injection nozzle G can move up and down in the hollow concrete pole by moving the parent line W1. Further, the hose h has a thickness that is hung on the pulley 34 and moves smoothly.
In this state, a water pump and a compressor for compressing air are connected to the hose h, and fresh water and compressed air are fed. As a result, fresh water mixed with air is jetted from the reverse jet nozzle G. In this state, as shown in FIG. 8 (c), the reverse injection nozzle G is raised in the hollow concrete pole by pulling the head parent line W1a, and the reverse injection nozzle G is pulled by pulling the hose h. By lowering the inside of the hollow concrete pole, cleaning is performed by spraying the spray liquid over the inner wall of the hollow concrete pole.
After the cleaning is completed, the inner wall of the hollow concrete pole is dried by stopping the water pump and injecting only compressed air from the reverse injection nozzle G as shown in FIG. Furthermore, as shown in FIG.8 (e), the pre-purified water which the bottom collected by the drainage pump is discharged | emitted by the vacuum pump B, and work is completed.

(5) Adhesive application process The adhesive application process uses the reverse injection nozzle G used in the cleaning process as it is. First, before applying the adhesive, a primer is sprayed on the inner wall of the hollow concrete pole as a base treatment. The primer is divided into two liquids, a curing agent and a main agent. The two liquids are kneaded separately by a stirrer, pumped by a two-liquid metering pump, and the two liquids are merged by a flow divider, and compressed air is supplied to the hose h. It is mixed by being supplied with. The primer is blended with an additive with increased adhesion so that it does not adhere to the inner wall of the concrete pole and run off. As shown in FIG. 8 (f), this primer is sprayed on the inner wall of the hollow concrete by moving up and down a reverse injection nozzle G to which the primer is mixed and supplied through a hose h.
Next, it is applied by spraying an adhesive. As with the primer, the adhesive is also divided into two liquids, a curing agent and a main agent, and the two liquids are kneaded separately with a stirrer, pumped with a two-liquid metering pump, and the two liquids merged with a flow divider, The hose h is mixed by being supplied with compressed air. Additives with increased tackiness are blended so that the adhesive does not adhere to the inner wall of the concrete pole and run off. As shown in FIG. 8 (f), such an adhesive is sprayed onto the inner wall of the hollow concrete by vertically moving the reverse injection nozzle G to which the adhesive is mixed and supplied through the hose h as shown in FIG. 8 (f). . After the work is completed, the hose h is pulled out to recover the injection nozzle from the hollow concrete pole to the ground, and the bottom parent wire W1b connected to the injection nozzle is further extracted to recover the parent wire W1.

(6) Inner wall reinforcing sheet fixing step (6-1) Structure of inner wall reinforcing sheet FIG. 9A is a front view of the inner wall reinforcing sheet 40. FIG. The inner wall reinforcing sheet has a cylindrical shape that matches the inner wall of a concrete pole with a high-strength fiber sheet, a main body portion 41 formed in a bag shape with the upper end portion and the lower end portion closed, and a synthetic resin provided on the upper end portion of the main body portion 41 An upper engaging member 42 formed of a cylindrical body, a lower engaging member 43 formed of a synthetic resin cylindrical body provided at the lower end portion of the main body 41, and an upper hole of the upper engaging body 42 Air hose 44, which is a first series of pipes composed of flexible pipes provided so as to communicate with the inside of the main body 10, and flexible provided so as to communicate with the inside of the main body 10 from the lower hole of the lower engaging member 43. It is comprised from the suction hose 45 used as the 2nd communicating pipe comprised with a simple pipe body. FIG. 9B shows an enlarged cross-sectional view of the vicinity of the joint portion of the main body portion 41. The joint portion of the main body portion 41 is formed by overlapping end portions formed in a cylindrical shape by about 20 cm, and is formed from an elastic fiber such as a polyurethane sheet at each of the end edges 41b1 and 41b2 formed inside and outside. The belts 41c1 and 41c2 are fixed by sewing. Thus, by fixing with the elastic fiber strips 41c1 and 41c2, the main body portion 41 can be made elastic, whereby it can be well deformed along the inner wall surface of the concrete pole with irregularities. An O-ring 41 a of about 10 m / m is knitted at a substantially central position of the main body 41. Further, the outer diameter of the upper engaging body 42 is of a size that substantially fits the inner diameter of the engaging cylinder portion 21a of the head fixing device 20, and the outer periphery of the upper engaging body 42 is biased outward by a spring. The engaging convex portion 42a is provided with an inclination so that the outer side of the side surface spreads downward from above, and the engaging convex portion 42a is engaged with a ring-shaped portion formed below the engaging cylindrical portion 21a. It comes to match. That is, the engagement cylinder part 21a constitutes an upper engaged part. Similarly, the outer diameter of the lower engagement body 43 is a size that fits substantially within the inner diameter of the engagement cylinder portion 31a of the bottom fixing device 30, and the outer periphery of the lower engagement body 43 is biased outward by a spring. A ring-shaped portion is provided with an engaging projection 43a provided with an inclination so that the outer side of the side surface is expanded from below to above, and the engaging projection 43 is formed above the engaging cylinder portion 31a. To be engaged. That is, the engagement cylinder part 31a constitutes a lower engaged part. In addition, a cylindrical reinforcing member arrangement device including a head arrangement device and a bottom arrangement device, which will be described later, is provided inside the inner wall reinforcement sheet 40 and on the lower end side of the upper engagement body 42. A third wire is provided, and on the lower end side of the inner wall reinforcing sheet 40, a bottom arraying device engaged portion with which the bottom arraying device is engaged is provided, which will be described later.

(6-2) Inner Wall Reinforcement Sheet Fixing Method The inner wall reinforcement sheet 40 is inserted as a shape wound in a cylindrical shape in the width direction so that the main body portion 41 can pass through the step hole 12. First, as shown in FIG. 10 (a), the portion from the head fixing device 20 to the bottom fixing device 30 of the parent line W1 is hooked with a rod with a hook and pulled out from the step hole 12, and FIG. Cut the pulled out part as shown. For each cut end, the one connected to the head parent line W1a is called a head cutting line W1aa, and the one connected to the bottom parent line W1b is called a bottom cutting line W1bb.
Next, as shown in FIG. 10 (b), the head parent wire W1a is tied to the tip of the air hose 44 of the inner wall reinforcing sheet 40, and the head cutting line W1aa is pulled to make the tip of the air hose 44 hollow. Insert into the concrete pole P. The air hose 44 passes through the engagement cylinder portion 21a of the head fixing device 20 as shown in FIG. The main body 41 connected to the air hose is also inserted into the interior. The O-ring 41a knitted at the center of the main body 41 is confirmed, and the head cutting line W1aa is temporarily fixed. Next, the lower band line wb is passed through the O-ring 41a, and the pin ball 41b to be hooked by the O-ring is attached to the bottom side with the O-ring 41a as the center. The pinball 41b is a lead sphere having an outer diameter larger than that of the O-ring, and is formed with a groove that can be engaged with the lower band line wb, and the lower band line wb is fitted in the groove. Fixed by crushing the groove. In this state, when the upper band line wa is pulled, the pinball 41b is caught by the O-ring 41a, and the central portion of the main body 41 in which the O-ring 41a is woven is hollow as shown in FIG. It is inserted into the concrete pole P. Furthermore, when the main body 41 is inserted into the interior to some extent, the suction hose 45 is also inserted into the interior. If the tip of the suction hose 45 is confirmed during the insertion, the bottom parent wire W1b and the tip of the suction hose 45 are bound. In this state, when the upper band line wa is further pulled, the tip of the suction hose connected to the bottom parent line W1b is drawn into the hollow concrete pole, so that the upper band line wa is temporarily fixed in this state.

Next, the temporarily cut head cutting line W1aa is pulled, and the tip of the air hose 44 is exposed from the step hole 12. When the air hose 44 is further pulled out, the upper engagement member 42 connected to the air hose 44 is inserted into the engagement tube portion 21a of the head fixing device 20 as shown in FIG. The portion 42a is engaged with the engaging tube portion 21a. As a result, the upper end of the inner wall reinforcing sheet 40 is fixed to the upper part of the inner wall of the hollow concrete pole P.
Next, when the bottom cutting line W1bb is pulled, the tip of the suction hose 45 moves, passes through the cylindrical engagement portion 31a of the bottom fixing device 30, is folded back by the pulley 34, is lifted, and is pulled out from the step hole 12. It is. When the suction hose 45 is further pulled out, the lower engagement member 43 connected to the suction hose 45 is inserted into the engagement cylinder portion 31a of the bottom fixing device 30 as shown in FIG. The mating projection 43a is engaged with the engagement cylinder portion 31a. Thereby, the lower end of the inner wall reinforcing sheet 40 is fixed to the bottom of the inner wall of the hollow concrete pole P. Thereafter, as shown in FIG. 11 (g), by pulling out the lower band line wb, the pin ball 41b and the upper band line wa attached to the center of the main body 41 are taken out and collected, and the suction hose 45 and Remove the piano wire from the air hose 44.
When the upper and lower ends of the inner wall reinforcing sheet 40 are fixed, the suction hose tip is connected to a pressure hose extending from the compressor, and compressed air is sent into the main body 41 to expand the main body 41 as shown in FIG. The adhesive attached to the inner wall of the concrete pole and the side surface of the main body 41 are brought into close contact with each other. When compressed air is discharged from the air hose 44, the tip of the suction hose 45 and the pressure-resistant hose are separated. Thereby, the side surface of the main body 41 of the inner wall reinforcing sheet 40 is bonded and fixed to the inner wall of the hollow concrete pole. Since the length of the inner wall reinforcing sheet 40 can be adjusted, the inner wall reinforcing sheet 40 can be installed in accordance with the reinforcing range, and the concrete pole head and bottom have the same outer diameter (no taper type). It is also applicable to.

(7) Cylindrical reinforcing member installation step (7-1) Structure of cylindrical reinforcing member arranging device At the lower end side of the upper engaging body 42 of the inner wall reinforcing sheet 40, a cylindrical reinforcing member arranging device serving as a reinforcing member fixing body is provided. Is provided. The cylindrical reinforcing member arranging device includes a head arranging device 50 and a bottom arranging device 60. FIG. 12 shows an enlarged cross-sectional view of the upper end of the current hollow concrete pole. In the figure, the head fixing device 20, the head arranging device 50, and the bottom arranging device 60 are not shown in cross section for convenience. The head arranging device 50 is fixed to the upper engaging body 41 of the inner wall reinforcing sheet 40, and the bottom arranging device 60 is temporarily fixed to the lower part of the head arranging device 50.
The head arrangement device 50 is a cylindrical body and is provided with eight circular engagement holes 51 serving as second engaged portions on the outer periphery. Further, a head array member 52 constituting a support frame is formed on the lower end side of the head array device 50, which is formed of a wire material and has eight radially expanding frames as a support frame. The eight frames forming the head arrangement member 52 are formed so as to be rotatable so as to be interlocked with the same angle from the lower side to the upper side, and extend to the horizontal state. Further, a third engaged portion 53 having a lower edge formed in a ring shape by forming a hole in the side surface of the cylindrical body is formed in the inner lower portion of the head array member 52.

  The bottom arrangement device 60 constitutes an engagement hole member, and is provided with eight circular engagement holes 61 on the outer periphery of a cylindrical body. Further, on the upper end side of the bottom arrangement device 60, a lower arrangement member 62 is formed which serves as a support frame in which eight circular frames are formed as support frames at the tips of radially extending rod bodies. The rods constituting the lower array member 62 are formed so as to be pivotable upward from below, and extend to a horizontal state. In addition, a temporary engagement piece 63 that engages with a ring-shaped portion of the bottom arrangement device fixing portion 53 of the head arrangement device 50 is provided at the upper end of the bottom arrangement device 60. The temporary engagement piece 63 can be immersed inside and is biased by a spring from the inside to the outside, and the outer edge is inclined inward from the top to the bottom. As a result, when the bottom array device 60 is pulled downward with a certain force or more, the temporary engagement pieces 63 are disengaged, and the bottom array device 60 can be detached from the head array device 50. In addition, an inner mold frame engaged portion 66 serving as a second engaged portion in which the upper end is formed in a ring shape by drilling a hole in the cylindrical body is formed at the upper end of the bottom portion arranging device 60. On the side surface in the vicinity of the lower end of the device 60, a bottom arrangement device engaging piece 65 is formed so as to be able to appear and retract. The bottom arraying device engaging piece 65 is biased outward by a spring from the inside, and is inclined so as to face inward in the downward direction. The bottom arraying device engaging piece 65 engages with a bottom arraying device engaged portion formed at the lower end of the inner wall reinforcing sheet 40. The bottom arraying device engaged portion has a cylindrical shape that can accommodate the bottom arraying device 60, and a notch is formed on the side surface, so that a ring-shaped portion is formed on the upper edge. In addition, a wire binding tool 64 is provided inside the lower end of the bottom array device 60 described later.

  Two types of wires, the second wire W2 and the third wire W3 that are exposed to the outside through the air hose 44 and the suction hose 45 of the inner wall reinforcing sheet 40, are passed through the head arranging device 50 and the bottom arranging device 60. ing. The third wire W3 passes through the air hose from the end of the air hose 44, passes through the center of the head arranging device 50 and the center of the bottom arranging device 60, reaches the inner wall reinforcing sheet 40, and passes through the inner wall reinforcing sheet. It passes through the suction hose 45 and is exposed from the end of the suction hose 45. There are eight second wires W2, and each wire passes from the end of the air hose 44 through the air hose 44 to the head array device 50, and inside each of the engagement holes 51 of the different head array devices 50. From the top to the bottom, each passing through different frames of the head arrangement member 52 from above to below, and each passing through different frames of the lower arrangement member 62 of the bottom arrangement device 60 from above to below. Are joined by the wire binding tool 64 connected to the third wire W <b> 3 in the bottom arrangement device 60. FIG. 13 is a cross-sectional view of the lower end portion of the bottom arraying device 60 showing the wire binding tool 64. The wire binding tool 64 is composed of a U-shaped binding frame 64a opened at the bottom and an operating piece 64b composed of two cams. On the upper surface of the binding frame 64a, the end of the second wire W2 is fixed, and a part of the third wire W3 is fixed. The operating pieces 64b are rotatably connected to each other, and engage with a contact edge 64ba that is lower than the lateral width of the binding frame 64a and a hole provided on a side surface near the lower edge of the bottom arrangement device 60. The engagement rod 64bb is urged by the spring 64bc in the direction in which the engagement rod 64bb is engaged. Then, when the binding frame 64a passes through a passage of a size that can pass through, the contact edge 64ba is pushed inward, so that the engagement rod 64bb also moves, and the engagement with the bottom arrangement device 60 can be released. ing.

(7-2) Structure of cylindrical reinforcing member A front view of the cylindrical reinforcing member is shown in FIG. The cylindrical reinforcing member 70 is formed by forming a cylindrical high-strength fiber sheet into a bag shape by sealing the upper part and the lower part. The diameter is about 20 m / m, and the outer diameter of the bottom is about 50 m / m. A rubber tube 71 communicating with the inside of the cylindrical reinforcing member 70 is provided at the upper end of the cylindrical reinforcing member 70. A second engagement portion 71 a that engages with the engagement hole 51 of the head array device 50 is provided at the tip of the rubber tube 71. The second engaging portion 71a has a protruding and protruding piece that is biased outward by a spring formed so as to be able to protrude and retract to the left and right of the cylindrical body whose upper end is narrowed, and the protruding and protruding piece is outward from the upper side to the lower side. By providing such an inclination as to expand, the engaging hole 51 is expanded and engaged when the protruding and retracting pieces have entered the engaging hole 51. Moreover, the lower end of the cylindrical reinforcement member 70 is provided with a mortar injection pipe 72 made of a rubber tube communicating with the inside. At the lower end portion of the mortar injection tube 72, a flange portion 72a made of a rubber ring projecting outward having a size for closing the engagement hole 61 of the bottom portion arranging device 60 is provided. Furthermore, a strainer hole 73 which is a through hole communicating with the inside is formed at equal intervals on the side surface of the cylindrical reinforcing member 70. A ring-shaped upper ring member 74 is provided at the base end portion of the rubber tube 71 of the cylindrical reinforcing member 70, and a ring-shaped lower ring member 75 is also provided at the upper end portion of the mortar injection pipe 72. The upper ring member 74 can pass through the frame of the lower arrangement member 62 of the bottom arrangement device 60, but is sized so as not to pass through the frame of the head arrangement member 52 of the head arrangement device 50. 75 is formed in a size that cannot pass through the frame of the lower arrangement device 62. Further, a connecting wire 76 extending from the end of the rubber tube 71 to the end of the mortar injection pipe 72 passes through the inside of the cylindrical reinforcing member 70. A pin ball 76a that cannot pass through the upper part of the second engaging portion 71a of the rubber tube 71 is fixed to the connecting wire 76, whereby the connecting wire 76 does not come out from the rubber tube 71 side, but the mortar It comes out of the injection tube 72 side. It is assumed that the connecting wire 76 is exposed from the mortar injection pipe 72 with a sufficient length.

(7-3) Cylindrical reinforcing member array method First, the bottom array device 60 is moved to the lower end side of the inner wall reinforcing sheet 40 and fixed. For this purpose, first, the third wire W3 exposed from the air hose 44 and the piano wire constituting the second wire are connected and extended. Next, as shown in FIG. 15A, the bottom fixing device 60 engaged with the wire binding device 64 is pulled downward by pulling the third wire in the suction hose. When pulled with a certain force or more, the engagement between the bottom fixing device 60 and the head fixing device 50 is released, and only the bottom fixing device 60 moves downward as shown in FIG. At this time, the second wire W2 bound to the wire binding tool 64 is also fed into the air hose 44 together with the third wire W3. Eventually, when the bottom fixing device 60 reaches the lower end of the inner wall auxiliary seat 40, the bottom fixing device engaging piece 65 provided in the vicinity of the lower end of the bottom fixing device 60 and the bottom fixing device cover provided at the lower end of the inner wall auxiliary seat 40 will be described. The engaging portion 47 is engaged. 16A and 16B show how the bottom fixing device engaging piece 65 and the bottom fixing device engaged portion 47 are engaged. When the third wire W3 is further pulled, the wire binding tool 64 is detached from the bottom fixing device 60. Specifically, as shown in FIGS. 16 (a) and 16 (b), a passage through which the binding frame 64 a of the wire binding tool 64 can pass is provided inside the proximal end of the suction hose 45. Then, the operation piece 64b of the wire binding tool 64 is operated, the engagement rod 64bb is moved inward, and the engagement with the bottom arrangement device 60 is released. Thereby, only the wire binding tool 64 passes through the suction hose 45. If the third wire W3 is pulled as it is, as shown in FIG. 15C, the wire binding tool 64 and the end portions of the eight second wires W2 connected to the wire binding device 64 are discharged from the end portions of the suction hose 45 to the outside. Is done. Then, as shown in FIG.15 (d), the 2nd wire W2 and the 3rd wire W3 are removed from the wire binding tool 64, and fixation of the bottom part arrangement | sequence apparatus 60 is completed. In this state, the second wire W2 and the third wire W3 pass through the air hose, the inner wall reinforcing sheet, and the suction hose.

Next, the cylindrical reinforcing member 70 is arranged. The cylindrical reinforcing member 70 is wound in a roll shape in the width direction so as to pass through the suction hose 45. The state of the lower end of the inner wall reinforcing sheet 40 at the present time is shown in FIG. 17, and the state of the upper end is shown in FIG. As shown in the drawing, the second wire W2 passes through the suction hose, reaches the inner wall reinforcing sheet 40 from the engagement hole 61 of the bottom arraying device 60, passes through the frame of the lower arraying member 62 from the inside to the outside, and reinforces the inner wall. Passing through the inside of the main body 41 of the seat 40, the frame of the head arrangement member 52 of the head arrangement device 50 passes through from the bottom upward, enters the engagement hole 51 of the head arrangement device 50, and reaches the air hose 44. .
Therefore, first, as shown in FIG. 19A, one of the second wires W2 exposed from the tip of the suction hose 45 coming out of the step hole 12 is exposed from the tip of the rubber tube 71 of the cylindrical reinforcing member 70. The cylindrical reinforcing member 70 is brought into the suction hose 45 by being coupled to the tip of the connecting wire 76 to be pulled out and pulling the other end of the second wire W2 that is exposed from the air hose 44 that is protruding from the step hole 12. I will put it in. When the second wire W2 is further pulled, the tip of the cylindrical reinforcing member 70 reaches the bottom array device 60 as shown in FIG. 19B, and the lower array member of the bottom array device 60 from the engagement hole 61 of the bottom array device 60. Ascend through the frame of 62. Eventually, when the lower ring member 75 provided at the upper end portion of the mortar injection pipe 72 of the cylindrical reinforcing member 70 reaches the frame of the lower array member 62, the lower ring member 75 cannot escape from this frame. As a result of being pushed up by the lower ring member 75, the rods constituting the lower array member 62 rotate upward from below and spread to a horizontal state. Similarly, when the upper ring member 74 provided at the base end of the rubber tube 71 of the cylindrical reinforcing member 70 reaches the head arrangement member 52 of the head arrangement device 50, the upper ring member 74 is connected to the head arrangement member 52. Since the frame cannot be removed, the frame is pushed up, and the frame of the head arrangement device 52 is rotated from the lower side to the upper side and spreads to a substantially horizontal state. When the second engagement portion 71a provided at the tip of the rubber tube 71 enters the engagement hole 51 of the head array device 50, the protruding and retracting piece of the second engagement portion 71a engages with the engagement hole 51 and is fixed. The On the other hand, on the bottom engaging device 60 side, the flange 72 a provided at the lower end of the mortar injection pipe 72 of the cylindrical reinforcing member 70 reaches the engaging hole 61 and closes the engaging hole 61. As a result, as shown in FIG. 19C, the upper and lower ends of the cylindrical reinforcing member 70 are fixed, and one frame of the head arranging member 52 of the head arranging device 50 and the lower arrangement of the bottom arranging device 60 are arranged. One frame of the member 62 spreads in a substantially horizontal state and holds the cylindrical reinforcing member 70.
Finally, as shown in FIG. 19 (d), the connecting wire 76 of the cylindrical reinforcing member 70 is pulled out from the suction hose 45 side, so that the connecting wire 76 and the second wire W2 connected thereto are taken out and one cylindrical reinforcing member is taken out. Fixing of the member 70 is completed. Hereinafter, the same operation is performed for all the cylindrical reinforcing members 70. FIG. 20 shows a state in the vicinity of the head arranging device 50 in this state. FIG. 21A shows a cross-sectional view of the bottom arranging device 60, and FIG. 21B shows a cross-sectional view of the head arranging device 50. The figure is shown. As shown in the figure, the cylindrical reinforcing members 70 are arranged radially in the hollow concrete pole almost symmetrically by the head arranging device 50 and the bottom arranging device 60.

(8) Internal formwork installation step (8-1) Structure of internal formwork FIG. 22 is a front view of the internal formwork 80. The internal mold 80 is formed by closing the upper and lower ends of cylindrical columnar vinyl chloride into a bag shape, and a high-strength fiber sheet 81 is wound around the outer periphery. A third engagement portion 82 is provided at the upper end of the internal mold 80. The third engagement portion 82 is a member having a base portion in a columnar shape and an upper portion having a truncated cone shape, and has a through hole constricted on the upper end side, and has an outer diameter formed at the lower end of the head arrangement device 50. An engagement convex portion 82a is provided which is formed slightly smaller than the inner diameter of the bottom arraying device fixing portion 53 to be formed, can be projected and retracted on the side surface, and is biased outward by a spring. The engaging convex portion 82a is inclined so as to go outward from the upper side to the lower side, whereby the third engaging portion 82 is engaged with the bottom arranging device fixing portion 53 of the head arranging device 50. 82a can be inserted while being immersed, and the engaging projection 82a expands beyond the ring-shaped portion of the bottom arraying device fixing portion 53, whereby the third engaging portion 82 is fixed to the bottom arraying device 50 of the head arraying device 50. The portion 53 is engaged and fixed. A lower internal formwork engagement portion 83 is formed at the lower end of the internal formwork 80. The lower internal formwork engaging portion 83 is a cylindrical body that allows the inside and outside of the internal formwork 80 to communicate with each other, and has an outer diameter slightly smaller than the inner diameter of the internal formwork engaged portion 66 of the bottom arraying device 60. Has been. The lower internal formwork engaging part 83 is provided with an engaging projection 83a that can be projected and retracted on the side surface and is urged outward by a spring. It engages with the ring-shaped part. Further, a pressure hose 84 serving as a gas injection pipe is connected to a hole in the center of the lower internal formwork engaging portion 83 so that compressed air can be introduced into the internal formwork 80. Further, a connecting wire 86 extending from the end of the third engagement portion 82 to the end of the pressure hose 84 passes through the internal mold 80. A pin ball 86a that cannot pass through the upper portion of the third engagement portion 82 is fixed to the connection wire 86, so that the connection wire 86 does not come off from the third engagement portion 82 side, but a pressure-resistant hose. It comes out from the 84 side. It is assumed that the connecting wire 86 is exposed from the pressure hose 84 with a sufficient length.

(8-1) Internal formwork installation method The internal formwork 80 is compressed and reduced in a roll shape in a roll shape so that it can be inserted into the suction hose 45. First, as shown in FIG. 23 (a), the connecting wire 86 exposed from the tip of the internal mold 80 and the third wire W3 in the suction hose 45 are combined, and then the tip of the air hose 44 is exposed. By pulling the third wire W3 to be taken out, the internal mold 80 is guided from the tip into the suction hose 45. Eventually, the tip of the internal mold 80 passes through the center of the internal formwork engaged portion 66 of the bottom aligning device 60 as shown in FIG. Ascend toward the center of 53. When the internal mold 80 is raised, first, the lower internal mold engaging portion 83 is engaged with the ring-shaped portion of the internal mold engaged portion 66 of the bottom arraying device 60. Then, when the tip of the internal mold 80 reaches the head array device 50, the third engaging portion 82 and the bottom array device fixing portion 53 of the head array device 50 are engaged. Thereby, as shown in FIG.23 (c), the upper end and lower end of the internal formwork 80 will be fixed. Thereafter, the connecting wire 86 and the third wire W3 are taken out by pulling out the connecting wire 86 exposed from the suction hose 45. Finally, the pressure hose 84 exposed from the end of the suction hose 45 is connected to a double pipe joint as shown in FIG. 24, and the internal mold 80 is filled with compressed air as shown in FIG. 25 (d). Then, the work is completed by inflating the air formwork. The inner mold 80 can be appropriately set with a reinforcement length and a reinforcement thickness, and can be applied to a non-tapered concrete pole.

(9) Mortar placing step The fast-curing resin mortar of the reinforcing agent is divided into two liquids, a curing agent and a main agent, and the two liquids are kneaded separately with a stirrer, and a two-liquid quantitative mortar pump (infusion pump). It sends to the flow divider and feeds it to the injection hose S connected to the suction hose 45 by the double joint shown in FIG. A cock C is attached to the tip of the air hose 44. Each liquid is mixed in the suction hose 45 and filled into the respective cylindrical reinforcing members 70 from the engagement holes 61a of the bottom arrangement device 60. Since the strainer hole 73 is formed in the cylindrical reinforcing member 70, the fast-curing resin mortar flows out of the strainer hole 73, and the gap between the inside of the inner wall reinforcing sheet 10 and the outside of the internal formwork 80 is also generated. As it fills, it rises and fills. When the mortar reaches the upper end, it further enters the head fixing device 50 and flows out to the ground part through the air hose 44. When the outflow of the fast-curing resin mortar is confirmed, the cock C provided at the tip of the air hose 44 is closed, and at the same time, the injection pump is stopped to complete the filling operation of the mortar. After completion of the filling, the curing of the fast-curing resin mortar is confirmed by opening the cock C at the tip of the air hose 44. After the curing is confirmed, the air cock laid on the double pipe joint is opened to open the internal mold 80. Release compressed air. The double pipe joint structure can be changed to fill the reinforcing agent with a long curing time and can be applied to a non-tapered concrete pole.

(10) Scaffolding bolt receiving step First, the three hoses protruding from the step hole 12 shown in FIG. 25 (a) are cut in the vertical direction at the concrete pole side as shown in FIG. 25 (b). In addition, the mortar permeate | transmits the internal reinforcement sheet | seat 40 comprised with a high strength fiber sheet, and has reached the inside of the step hole 12. FIG. Next, as shown in FIG. 25C, using the same type of core drill that was used when the step hole 12 was installed, a hole is made in the horizontal direction to a depth of about 50 m / m to form a hole. Then, the inside of the hole opening is cleaned, a primer is sprayed, and a fast-curing adhesive is filled with a cartridge gun, and a new lifting / lowering scaffold bolt receiving port N is inserted and fixed as shown in FIG. After the adhesive is cured, the area around the hole opening is cleaned and the work is completed.
The reinforcement work is completed by completing all the above steps. Accordingly, as shown in FIGS. 26 (a) and 26 (b), the inner reinforcing sheet 40 is adhered to the inner wall of the hollow concrete pole, and the inner reinforcement between the inner side of the inner reinforcing sheet 40 and the outer side of the inner formwork 80 is provided. The members 70 are reinforced by the mortar in an evenly arranged state.

(Supplement) On-board plant The above construction method can be performed only on the on-board plant placed on one truck. The size of the loading platform of the on-board plant is a flat body truck with a total length of 4.300 m / m x width of about 1.700 m / m, and equipment used for reinforcement work is mounted on one truck. FIG. 26 is a plan view showing the outline of the on-board plant. On-board plant X includes generator DM, storage B, mortar material storage M, compressor CP, gear pump GP, adhesive main agent tank T1A, adhesive hardener phase tank T1B, primer main agent tank T2A, primer hardener tank T2B, and mortar. A main agent stirring tank MA, a mortar hardener stirring layer MB, a grout flow meter F, a water injection pump W, a rod drum LR, and a hose drum HR are placed. In the hose drum placed behind the on-board plant, a hose for pumping a reinforcing material to a concrete pole for reinforcement is housed in the hose drum. As for the type of hose, an injection hose with improved pressure resistance and a pressure hose for pumping compressed air are housed in a hose drum separately for pumping liquids such as water and reinforcing agents. Further, the inner wall reinforcing sheet 40, the cylindrical reinforcing member 70, and the internal formwork 80 of the reinforcing material are compressed and reduced into a roll shape, are built in a duct hose, and are stored in a hose drum. During reinforcement work, extend the duct hose to the concrete pole to be reinforced. The grout flow meter F manages the filling amount and filling pressure when filling the reinforcing material, and is in a form to be recorded. Further, in the on-vehicle plant X, an ultra-small camera may be inserted into the hollow portion of the concrete pole, and the construction may be performed while checking the work status on the ground unit and the on-vehicle plant with a monitor and recorded in the record.

(Embodiment 2)
Next, a reinforcing method for a hollow concrete pole according to Embodiment 2 will be described. The outline of the hollow concrete pole reinforcing method according to the second embodiment is as follows: (1) Step hole forming step, (2) Head fixing device installation step, (3) Bottom fixing device installation step, (4) Cleaning step, (5) It consists of a first adhesive application step, (6) an inner wall reinforcing sheet fixing step, (7) a second adhesive application step, (8) an internal mold installation step, and (9) a scaffold bolt receiving restoration step. The hollow concrete pole reinforcing step according to the second embodiment is different from the first embodiment in that the second adhesive applying step is performed after the inner wall reinforcing sheet fixing step, the cylindrical reinforcing member grounding step, and the mortar placing step. It differs from the hollow concrete pole reinforcement process which concerns on. Hereinafter, it demonstrates centering on difference with the hollow concrete pole reinforcement construction method concerning Embodiment 1 regarding each process.

(1) Step hole forming step, (2) Head fixing device installation step, (3) Bottom fixing device installation step are step hole forming step, head fixing device installation step, bottom fixing device installation step according to the first embodiment. It is almost the same. However, the head fixing device 120 and the bottom fixing device 130 used in the head fixing device installation step and the bottom fixing device installation step are made of rubber balloons instead of jacks as shown in FIGS. 28 and 29, respectively. Balloons 121 and 131 are provided, and air pressure is supplied from the pressure hose instead of hydraulic pressure. With such a configuration, the balloons 121 and 131 that are inflated by air can be fixed in the hollow concrete pole. The pulley of the head fixing device 120 is not hung by the band line w, but only by the parent line W1.
(4) The cleaning process is substantially the same as the cleaning process according to the first embodiment.
(5) In the first adhesive application step, the adhesive is not applied in the adhesive application step in Embodiment 1, and only the primer solution is applied to the inner wall by the reverse injection nozzle G.

(6) The inner wall reinforcing sheet fixing step is different in the inner wall reinforcing sheet 140 and the inner wall reinforcing sheet fixing method. The inner wall reinforcing sheet 140 has substantially the same configuration as the inner wall reinforcing sheet 40 according to the first embodiment, and includes a main body part 141, an upper engaging part 142, a lower engaging part 143, an air hose 144, and a suction hose 145. 41a is not knitted. Further, in the inner wall reinforcing sheet 140, a cylindrical reinforcing member arranging device composed of a head arranging device and a bottom arranging device is not provided, and only the third wire W3 passes.
Also, the inner wall reinforcing sheet fixing method is different from the inner wall reinforcing sheet fixing method according to the first embodiment, as shown in FIG. 30 (a), without cutting the parent line W1, and the bottom fixing device 130 of the parent line W1. The inner wall reinforcing sheet 140 is pulled into the hollow concrete pole P by attaching the air hose 144 of the inner wall reinforcing sheet 140 to the end W1b connected to the side and pulling the end W1a connected to the head fixing device 120 side of the parent line. Put in. Accordingly, as shown in FIG. 30B, the air hose 144 rises through the cylindrical engagement portion of the bottom fixing device 130 and is exposed to the outside through the engagement cylindrical portion of the head fixing device 120. . Then, as shown in FIG. 30C, the upper engaging portion 142 of the inner wall reinforcing sheet 140 is engaged with the head fixing device 120, and the lower engaging portion 143 is engaged with the bottom fixing device 130. The inner wall reinforcing sheet 140 is fixed. Then, as shown in FIG.30 (d), air is sent from the suction hose 145 and the inner wall reinforcement sheet 140 is expanded.

(7) The second adhesive application step is performed on the inside of the inner wall reinforcing sheet 140. That is, after the inner wall reinforcing sheet 140 is expanded as shown in FIG. 30A, the reverse injection nozzle G is inserted into the inner wall reinforcing sheet 140 using the third wire W3 as shown in FIG. 30B. Then, an epoxy resin adhesive is applied to the inner wall reinforcing sheet via the reverse injection nozzle G. The epoxy resin adhesive is a fast-curing type and is divided into a curing agent and this agent. Since the inner wall reinforcing sheet 140 is made of fiber, the applied adhesive can penetrate and reach the surface in contact with the inner wall of the hollow concrete pole, thereby bonding the inner wall reinforcing sheet 140 to the inner wall of the hollow concrete pole. be able to. Further, the strength after the adhesive is cured can be increased depending on the amount of the adhesive applied.
(8) The internal mold installation process is performed immediately after the (7) second adhesive application process, and the size of the internal mold 180 used is set to be approximately the same as the inner wall reinforcing sheet 140. ing. As shown in FIG. 30C, the inner mold 180 is fixed to the head fixing device 120 and the bottom fixing device 130 up and down, and then heated air is blown into the inner wall reinforcing sheet 140 so that the inner wall reinforcing sheet 140 is attached to the inner wall of the hollow concrete pole. And the epoxy adhesive soaked in the entire inner wall reinforcing sheet 140 is overheated and cured at an early stage.
Through the above process, as shown in the broken perspective view of FIG. 31, the inner mold 180 having the inner reinforcing sheet 140 and the high-strength fiber sheet 181 on the outer periphery is fixed to the inner wall of the hollow concrete pole. Shear force will be strengthened.

(Modification to Embodiment 1)
[1] Modified Example of Cylindrical Reinforcement Member Arrangement Device [1-1] Flexible Cylindrical Reinforcement Member Arrangement Device FIG. 33 shows a flexible tubular reinforcing member arrangement device 250, which is a modified example of the cylindrical reinforcement member arrangement device. The flexible cylindrical reinforcing member arranging device 250 includes a head arranging unit 251, a bottom arranging device 252, and an intermediate support frame 253. The head array device 251 is a cylindrical body and is provided with eight circular engagement holes 251a on the outer periphery serving as a second engaged portion. Further, a third engaged portion 251b having a lower edge formed in a ring shape by forming a hole in the side surface is formed in the lower portion of the cylindrical body. In addition, an inner wall reinforcing sheet engaging portion 251c is provided on the upper portion of the cylindrical body. The inner wall reinforcing sheet engaging portion 251c is provided with an inclination so that the outer side surface urged outward by the spring spreads downward from above. Moreover, the hole of the upper surface of the head arrangement | sequence device 251 is formed a little smaller than the internal diameter of the cylindrical body which comprises a main body.
The bottom arrangement device 252 is a cylindrical body and is provided with eight circular engagement holes 252a on the outer periphery serving as a second engaged portion. Further, an inner mold frame engaged portion 251b having an upper edge formed in a ring shape by forming a hole in the side surface is formed in the upper portion of the cylindrical body. Further, a tension coil spring 252c is attached to the lower portion of the cylindrical body, and a donut-shaped flange body 252d having a size that cannot be put into the inner wall reinforcing sheet 40 is provided at the lower end of the tension coil spring 252c.
The intermediate support frame 253 is composed of eight vertical frames 253a made of straps whose both ends are fixed from the circular lower edge of the head arrangement device 251 to the circular upper edge of the bottom arrangement device 252 and adjacent vertical frames 253a. A cylindrical shape made of a ring body having a plurality of horizontal frames 253b made of string members that connect each other at equal distances, and a ring body having substantially the same inner diameter as the outer diameter of the cylindrical reinforcing members arranged at regular intervals on the outer surface side of the vertical frame 253a It is comprised from the reinforcement member holding ring 253c. The length of the vertical frame 253a is substantially equal to the outer surface of the internal mold in a state where the inner wall reinforcing sheet engaging portion 251 of the head arranging device 251 and the franc itself 252d of the bottom arranging device 252 are both engaged with the inner wall reinforcing sheet. It is set to a length that touches. Further, the length of the horizontal frame 253b is set to such a length as to contact the outer surface of the internal mold frame in a tensioned state with the internal mold frame inflated.

Two types of wires, the second wire W2 and the temporary third wire W3a, are passed through the flexible cylindrical reinforcing member arranging device 250. The temporary third wire W <b> 3 passes through the inside from the top surface of the head fixing device 251, passes through the inside from the top surface of the bottom fixing device 252, and is exposed from the bottom surface. In the middle of the temporary third wire W3, a pinball W3a that cannot pass through a hole in the upper surface of the head fixing device is fixed inside the upper surface of the head fixing device 251.
There are eight second wires W2, and each wire passes through the inside from the upper surface of the head array device 251 and passes through the engagement holes 251a of the different head array devices 251 from the inside to the outside. Passes through the cylindrical reinforcing member holding rings 253c provided on the different vertical frames 253a of the intermediate support frame 253 from the upper side to the lower side, and further enters the engagement holes 252a of the bottom arrangement device 252 from the outside to the inside. It is exposed from the lower surface of the arrangement device 252. The 2nd wire W2 and the 3rd wire W3 are united by the binding tool in the position of the upper end side and the lower end side.

[1-2] Fixing Method of Flexible Cylindrical Reinforcement Member Arranging Device The flexible cylindrical reinforcing member arranging device 250 having such a configuration is inserted and fixed after the inner wall reinforcing sheet is fixed. It is not fixed in advance. Only the third wire passes through the inner wall reinforcing sheet for inserting the flexible cylindrical reinforcing member arranging device 250, and the inner wall reinforcing sheet engaging portion 251 c of the flexible cylindrical reinforcing member arranging device 250 is disposed on the inner upper portion. Is engaged, and a hole through which the flange body 252c of the flexible tubular reinforcing member arranging device 250 cannot pass is provided on the lower end side.
When fixing the flexible cylindrical reinforcing member arranging device 250, the temporary third wire W3x connected to the upper side of the cylindrical reinforcing member arranging device 250 is connected to the end portion of the third wire connected to the suction hose side of the inner wall reinforcing sheet. By pulling the third wire connected to the air hose side of the inner wall reinforcing sheet, the flexible cylindrical reinforcing member arranging device 250 is pulled to the temporary third wire W3x by the pinball W3xa, passes through the suction hose of the inner wall reinforcing sheet, and reinforces the inner wall. The interior of the sheet rises, and eventually the inner wall reinforcing sheet engaging portion 251c of the flexible cylindrical reinforcing member arranging device 250 engages with a ring-shaped member provided on the inner upper side of the inner wall reinforcing sheet. At this time, since the length of the vertical frame 253a of the intermediate support frame 253 is appropriately determined, the flange body 252d of the bottom fixing device 252 is caught in a hole through which the flange body 252c on the inner lower side of the inner wall reinforcing sheet cannot pass. . Thereby, the flexible cylindrical reinforcing member arranging device 250 is fixed to the internal reinforcing sheet at the top and bottom. In this state, the length of the second wire W2 is set so that the second wire W2 is exposed to the outside of the hollow concrete pole P, and a binding tool for combining the second wire W2 and the temporary third wire W3x is also exposed. Thereby, the binding by the binding tool can be released and the second wire W2 and the temporary third wire W3x can be separated. After separation, when the third wire is pulled from the suction hose side, the pinball W3xa fixed to the temporary third wire W3 can move downward, so the temporary third wire W3x with the pinball W3a is taken out, Only the third wire can be left.
The subsequent steps are the same as those shown in the first embodiment. The intermediate support frame 253 of the flexible cylindrical reinforcing member arranging device 250 is formed of a flexible material because it has a hook shape in contact with the outer periphery of the internal mold frame in a tensioned state when the internal mold frame is expanded. You can keep the position.

[2] Other Modifications [2-1] The head fixing device and the bottom fixing device may be replaced with the head fixing device and the bottom fixing device used in the second embodiment.
[2-2] In the inner wall reinforcing sheet fixing step, when the inner wall reinforcing sheet is fixed to the head fixing device and the bottom fixing device, the air hose as shown in the second embodiment without folding the inner wall reinforcing sheet at the intermediate portion. May be fixed by connecting to the parent line and pulling straight up.
[2-3] In the inner wall reinforcing sheet fixing step, the inner wall reinforcing sheet may be adhered by allowing the adhesive to penetrate from the inside by the method shown in the second embodiment. In this case, since the tubular reinforcing member arranging device cannot be inserted in advance, the above-described flexible tubular reinforcing member arranging device is used.
[2-4] In the mortar placing step, the mortar is injected from the injection hose S communicated with the suction hose 45, but the tubular hose S is inserted upside down so that the injection hose S communicates with the air hose. And you may make it inject | pour mortar into the inside of a cylindrical internal reinforcement member from upper direction.

(Modification to Embodiment 2)
[1] Addition of mortar application process A mortar application process may be provided between the second adhesive application process and the internal mold installation process. In the mortar application step, first, the reverse injection nozzle G used in the second adhesive application step is pulled out to the outside by pulling the third wire, and the reverse injection nozzle for mortar liquid injection connected to the pipe for supplying the mortar liquid Replace with. Then, the third wire is pulled again in the opposite direction, positioned inside the hollow concrete pole P, the mortar liquid is supplied from the pipe body while operating the third wire and moving the reverse injection nozzle up and down, so that the inside of the inner wall reinforcing sheet 140 Spray the mortar liquid on. This completes the mortar coating process. The internal mold installation process is performed immediately after the mortar coating process is completed.
[2] Other Modifications [2-1] Drying of the adhesive and mortar may be promoted by sending hot air from the reverse spray nozzle after the second adhesive application step and the mortar application step.
[2-2] The inner mold installation step may be omitted and the inner wall reinforcing sheet or the inner wall reinforcing sheet and the mortar layer sprayed in the mortar coating step may be used for reinforcement.

(A) (b) is a partially expanded sectional view of the hollow concrete pole which shows the state which opens a pilot hole in the side of a hollow concrete pole. (A) is a partial expanded sectional view of the hollow concrete pole which shows the state before opening a step hole in the side of a hollow concrete pole, (b) (c) is a hollow concrete pole which shows the process of opening a step hole. It is a partially expanded sectional view. It is a partially expanded sectional view of the hollow concrete pole which shows a step hole. It is a front view of a head fixing device. (A)-(d) is a schematic diagram which shows a head fixing device installation process. It is a front view of a bottom fixing device. (A)-(d) is a schematic diagram which shows a bottom part fixing device installation process. (A)-(f) is a schematic diagram which shows a washing | cleaning process and an adhesive agent application process.

It is a front view of an inner wall reinforcement sheet. It is an expanded transverse cross section near the junction part of the main-body part of an inner wall reinforcement sheet. (A)-(d) is a schematic diagram which shows a part of inner wall reinforcement sheet | seat fixing process. (E)-(h) is a schematic diagram which shows another part of an inner-wall reinforcement sheet fixing process. It is an expanded sectional view of the hollow concrete pole upper end after completion | finish of an inner wall reinforcement sheet fixing process. It is sectional drawing of the lower end part of the bottom part arrangement | sequence apparatus which shows a wire binding tool.

It is a front view of a cylindrical reinforcement member. (A)-(d) is a schematic diagram which shows the fixing process of a bottom part fixing device. (A) (b) is an expanded sectional view of the bottom fixing device periphery which shows a mode that a bottom fixing device engaging piece and a bottom fixing device engaged part engage. It is a front view which shows the state inside the lower end of the inner wall reinforcement sheet | seat at the time of bottom part fixing device fixation. It is a front view which shows the state inside the upper end of the inner-wall reinforcement sheet | seat at the time of bottom part fixing device fixation. (A)-(d) is a schematic diagram which shows the arrangement | sequence process of a cylindrical reinforcement member. It is a perspective view which shows the mode of the head arrangement | sequence apparatus at the time of completion of a cylindrical reinforcement member arrangement | sequence process. (A) is a cross-sectional view of the bottom arrangement device portion when the cylindrical reinforcing member arrangement step is completed, and (b) is a cross-sectional view of the head arrangement device portion when the cylindrical reinforcement member arrangement step is completed. . It is a front view of an internal formwork. (A)-(d) is a figure which shows an internal formwork installation process typically. It is an expanded sectional view near the step hole which shows the double joint at the time of mortar injection. (A)-(d) is an expanded sectional view of the step hole vicinity which shows a scaffold bolt receptacle restoration process. (A) is a partially broken perspective view of a hollow concrete pole after completion of reinforcement, and (b) is a lateral end view of the hollow concrete pole after completion of reinforcement. It is a top view which represents the outline | summary of a plant on a vehicle typically.

FIG. 6 is a front view of a head fixing device according to a second embodiment. 6 is a front view of a bottom fixing device according to Embodiment 2. FIG. (A)-(d) is a figure showing typically another example of an inner wall reinforcement sheet fixing process. (A)-(d)) is a figure which shows typically from a 2nd adhesive agent coating process to an internal mold installation process. It is a partially broken perspective view which shows the hollow concrete pole reinforcement structure which concerns on Embodiment 2. FIG. It is a front view which shows a flexible cylindrical reinforcement member arrangement | sequence apparatus.

Explanation of symbols

P hollow concrete pole X on-vehicle plant W1 parent wire W2 second wire W3 third wire 12 step hole 20 head fixing device 21 jack 21a cylindrical engagement portion 22 piston cylinder 23 pressure-resistant hose 24 pulley 30 bottom fixing device 31 jack 31a Cylindrical engagement portion 34 pulley 40 inner wall reinforcing sheet 42 upper engagement body 43 lower engagement body 44 air hose 45 suction hose 50 head arrangement device 51 engagement hole 52 head arrangement member 53 bottom arrangement device fixing portion 60 bottom arrangement device 61 Engagement hole 62 Lower array member 66 Internal formwork engaged part 70 Cylindrical reinforcement member 71a Second engagement part 72 Mortar injection pipe 72a Flange part 72a
73 Strainer hole 80 Internal mold 81 High-strength fiber sheet 83a Third engagement portion 84 Pressure hose 120 Head fixing device 130 Bottom fixing device 140 Inner wall reinforcing sheet 180 Internal mold 250 Flexible cylindrical reinforcing member arranging device 253a Vertical frame 253b Horizontal frame 253d Tubular reinforcing member retaining ring

Claims (12)

A hollow concrete pole reinforcing method having the requirements described in the following (101) to (114).
(101) For a hollow concrete pole in which a high-strength fiber sheet is formed into a cylindrical shape, and is formed into a bag shape by sealing the upper and lower parts, and is provided with a first series of pipes that communicate with the interior Use an inner wall reinforcing sheet.
(102) A hollow concrete pole fixing device having a projecting portion that extends laterally and that is engaged with an inner surface of a hollow concrete pole having a predetermined inner diameter and a wire holding portion that holds the wire movably is used.
(103) The hollow concrete pole fixing device is fixed as a head fixing device on the inner upper portion of the hollow concrete pole, and the hollow concrete pole fixing device is fixed as a bottom fixing device on the inner lower portion of the hollow concrete pole. .
(104) An upper engagement member is provided at the upper end of the hollow concrete pole inner wall reinforcing sheet, and a lower engagement member is provided at the lower end.
(105) The head fixing device is provided with an upper engaged member that engages with the upper engaging member that moves by being pulled by a wire held by the head fixing device.
(106) The bottom fixing device is provided with a lower engaged member that engages with the lower engaging member that is pulled and moved by the wire held by the bottom fixing device.
(107) A coating nozzle having a predetermined shape for ejecting liquid to the side and connected to a liquid supply pipe is used.
(108) At least one wire holding portion of the head fixing device or the bottom fixing device can pass the application nozzle.
(109) The wire held by the head fixing device and the bottom fixing device is the same wire, and passes between the wire holding portion of the head fixing device and the wire holding portion of the bottom fixing device. ing.
(110) The coating nozzle is attached to a part of the wire so that the liquid is directed to the side, and the coating nozzle is moved by pulling the wire, and the coating nozzle is moved up and down in the hollow concrete pole. And a coating nozzle setting step for making it movable.
(111) After the coating nozzle setting step, an adhesive is supplied from a tube connected to the coating nozzle and sprayed from the coating nozzle, and the coating nozzle is moved up and down by pulling the wire or the tube. And an adhesive application step of applying the adhesive to the inner wall of the hollow concrete pole.
(112) After the adhesive application step, the upper end side of the hollow concrete pole inner wall reinforcing sheet is connected to a part of the wire, and the upper engaging member is attached to the head fixing device by pulling the wire. It has an upper engagement member engagement process which moves and engages with an engagement member.
(113) After the adhesive application step, a lower end side of the inner wall reinforcing sheet for hollow concrete pole is connected to a part of the wire, and the lower engaging member is engaged with the bottom fixing device by pulling the wire. A lower engaging member engaging step for moving and engaging the combined member;
(114) After the upper engaging member engaging step and the lower engaging member engaging step, the inner wall reinforcing sheet for hollow concrete poles is inflated by allowing gas to flow in from the first continuous pipe of the inner wall reinforcing sheet for hollow concrete poles. And a bonding step of pressing and bonding the inner wall reinforcing sheet for the hollow concrete pole against the inner wall of the hollow concrete pole. In the hollow concrete pole reinforcing method according to claim 1, in addition to the requirements described in the following (201) and (207), in place of the requirements described in the following (108) to (111), A hollow concrete pole reinforcing method having the requirements described in (201) to (206).
(201) The inner wall reinforcing sheet for a hollow concrete pole is provided with the first continuous pipe at an upper portion or a lower portion, and a tubular body communicating with an inner portion of the upper concrete portion without the upper or lower continuous pipe. A second communication pipe is provided.
(202) After the upper engaging member engaging step and the lower engaging member engaging step, the inner wall reinforcing sheet for hollow concrete poles is inflated by injecting gas from the first series of pipes of the inner wall reinforcing sheet for hollow concrete poles. Expansion step.
(203) A nozzle wire is provided in advance from the first series pipe through the inside of the inner wall reinforcing sheet for hollow concrete pole to the inside of the second communication pipe.
(204) At least one of the first continuous pipe or the second communication pipe can pass the application nozzle.
(205) The coating nozzle is attached to a part of the nozzle wire so as to face a direction in which the liquid is sprayed laterally, the coating nozzle is moved by pulling the nozzle wire, and the coating nozzle is moved to the hollow concrete. There is a setting step in the application nozzle reinforcing sheet that allows the pole inner wall reinforcing sheet to move up and down.
(206) After the expansion step and the setting step in the coating nozzle reinforcing sheet, an adhesive is supplied from the tube connected to the coating nozzle and sprayed from the coating nozzle, and the wire for nozzle or the tube A reinforcing sheet adhesive application step of applying the adhesive into the hollow concrete pole inner wall reinforcing sheet by moving the application nozzle up and down by pulling.
(207) The adhesion step is performed after the reinforcing sheet adhesive application step. The hollow concrete pole reinforcement construction method according to claim 2, further comprising the requirements described in (301) to (305) .
(301) A mortar injection nozzle connected to a mortar pipe body that supplies a mortar liquid having a predetermined shape for injecting the mortar liquid to the side is used.
(302) At least one wire holding part of the head fixing device or the bottom fixing device can pass the mortar spray nozzle.
(303) After the reinforcing sheet adhesive coating step, pull the nozzle wire to take out the coating nozzle, remove it from the nozzle wire, and turn the mortar spray nozzle in the direction of spraying the mortar liquid to the side. After the mortar spray nozzle is attached to the mortar spray nozzle, the mortar spray nozzle is moved by pulling the nozzle wire so that the mortar spray nozzle can move up and down within the hollow concrete pole inner wall reinforcing sheet. It has a nozzle reinforcing sheet setting process.
(304) After the setting step in the mortar spray nozzle reinforcing sheet, the mortar liquid is supplied from the tube connected to the mortar spray nozzle and sprayed from the mortar spray nozzle, and the wire for nozzle or the mortar tube The reinforcing sheet mortar liquid applying step of applying the mortar liquid into the inner wall reinforcing sheet for the hollow concrete pole by moving the coating nozzle up and down by pulling. The hollow concrete pole reinforcement construction method of Claim 2 or 3 WHEREIN: The hollow concrete pole reinforcement construction method provided with the requirements of the following (401).
(401) Instead of the bonding step or after the bonding step, the inner wall reinforcing sheet for hollow concrete pole with the adhesive or the mortar liquid is formed into a tubular and bag-like shape from the first continuous pipe. There is an inner wall reinforcing sheet pressing step of inserting the inner mold form made of balloons and inflating the inner mold form to press the inner wall reinforcing sheet for the hollow concrete pole against the inner wall of the hollow concrete pole. Furthermore, the hollow concrete pole reinforcement construction method of Claim 1 which satisfy | fills the requirements described in the following (501) (502) .
(501) Between the coating nozzle setting step and the adhesive coating step, the cleaning liquid is supplied from the tube connected to the coating nozzle and sprayed from the coating nozzle, and the wire or the tube is pulled to draw the wire. There is a cleaning step of spraying the cleaning liquid onto the inner wall of the hollow concrete pole by moving the coating nozzle along the top and bottom.
(502) It has the washing | cleaning liquid suction process which sucks out the washing | cleaning liquid collected on the bottom of the concrete pole after the washing | cleaning process. Furthermore, the hollow concrete pole reinforcement construction method of any one of Claim 2 to 4 which satisfy | fills the requirements as described in the following (601)-(604) .
(601) At least one wire holding portion of the head fixing device or the bottom fixing device can pass the application nozzle.
(602) The wire held by the head fixing device and the bottom fixing device is the same wire, and passes between the wire holding portion of the head fixing device and the wire holding portion of the bottom fixing device. ing.
(603) Before the upper engagement member engagement step and the lower engagement member engagement step, attach the application nozzle to a part of the wire so that the liquid is directed to the side and pull the wire. The application nozzle setting step of moving the application nozzle so that the application nozzle can move up and down in the hollow concrete pole is provided.
(604) After the coating nozzle setting step, using the coating nozzle set by the coating nozzle setting step, the adhesive primer is supplied from the tube connected to the coating nozzle and sprayed from the coating nozzle. And a primer application step of applying the primer for adhesive to the inner wall of the hollow concrete pole by moving the application nozzle up and down by pulling the wire or the tube. Furthermore, the concrete pole reinforcement construction method of Claim 6 which satisfy | fills the requirements described in the following (701) (702) .
(701) Between the coating nozzle setting step and the primer coating step, a cleaning liquid is supplied from a tube connected to the coating nozzle and sprayed from the coating nozzle, and the coating is performed by pulling the wire or the tube. There is a cleaning step of spraying the cleaning liquid onto the inner wall of the hollow concrete pole by moving the nozzle along the top and bottom.
(702) After the cleaning step, the cleaning liquid sucking step for sucking out the cleaning liquid accumulated on the bottom of the concrete pole is included.   Furthermore, after the said washing | cleaning process, it has a drying process which blows air on a hollow concrete pole inner wall by supplying air from the pipe body connected to the said application nozzle, and making it spray from the said application nozzle. Hollow concrete pole reinforcement method. The hollow concrete pole reinforcement structure formed by the hollow concrete pole reinforcement construction method in any one of Claim 1 to 8. The high-strength fiber sheet used for the hollow concrete pole reinforcing method according to any one of claims 1 to 8 is formed into a cylindrical shape, and formed into a bag shape by sealing the upper and lower portions, and the upper portion An inner wall reinforcing sheet for a hollow concrete pole provided with a first continuous pipe which is a pipe body communicating with the inside, and a second communication pipe which is a pipe body communicating with the inside at a lower portion. It is used for the hollow concrete pole reinforcement construction method according to any one of claims 1 to 8.
A wire made of a detachable flexible pipe ,
A balloon part formed so as to spread laterally by the hydraulic pressure or atmospheric pressure supplied from the wire rod,
The fixing device for hollow concrete poles which has a wire holding part which hold | maintains a wire so that a movement is possible. A hollow concrete pole fixing device described in (103) of claim 1 for fixing as a head fixing device and a bottom fixing device, the hollow concrete having the following requirements (1201) to (1206) Fixing device fixing method in pole.
(1201) The hollow concrete pole fixing device serving as the head fixing device and the bottom fixing device is provided with a detachable wire, and the stretched portion is spread laterally by being operated through the wire.
(1202) A step hole forming step of providing a step hole, which is a hole communicating with the inside, having a size that allows the head fixing device and the bottom fixing device to pass through a side surface of the hollow concrete pole.
(1203) After the step hole forming step, the head fixing device is inserted from the step hole with the wire holding part holding the intermediate part of the wire, and both ends of the wire are out of the step hole. A head fixing device arranging step of positioning the wire rod into the upper part of the inner wall of the hollow concrete pole by pushing in the wire while maintaining the above.
(1204) After the head fixing device arrangement step, by operating the head fixing device through the wire, the stretched portion is widened to fix the head fixing device to the inner wall of the hollow concrete pole. A head fixing device fixing step of removing the wire;
(1205) After the step hole forming step, the bottom fixing device is inserted from the step hole with the wire holding part holding the intermediate part of the wire, and both ends of the wire are out of the step hole. A bottom fixing device disposing step is provided in which the wire rod is pushed in while being maintained and positioned at the lower portion of the inner wall of the hollow concrete pole.
(1206) After the bottom fixing device arranging step, the bottom fixing device is operated through the wire to widen the stretched portion and fix the bottom fixing device to the inner wall of the hollow concrete pole, and then remove the wire. A bottom fixing device fixing step;

Images