Column reinforcement bag material, bag support rod material, column reinforcement method, and valve

Abstract

To provide a column reinforcement bag material, a bag support rod material, a column reinforcement method, and a valve, which can more easily reinforce a column.SOLUTION: A bag material 20 includes: a bag body 21 located within a cavity 52 of a utility pole 50 and formed in a bag shape extending in the height direction of the utility pole 50, and fitted closely to the inner peripheral surface of the utility pole 50 by filling the interior with filler material 40; an injection port 25 which is an entrance for supplying the pre-hardened fluid filler material 40 into the bag body 21; and a hooking portion 22 attached to the upper end of one of the longitudinal ends of the bag body 21 farthest from the ground G and configured to be able to hook a support tip portion 32 located at the tip of a bag support rod 30.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to a column reinforcement bag material, a bag support bar material, a column reinforcement method, and a valve.

Background Art

[0002] For example, in the method for reinforcing a concrete column described in Patent Document 1, a reinforcing material formed in a long bag shape with a fiber sheet is installed in the hollow portion of a concrete utility pole, and mortar is injected into the inside of this bag-shaped reinforcing material. Thereby, the reinforcing material spreads due to the internal pressure from the mortar and adheres to the inner wall surface of the concrete utility pole.

Prior Art Documents

Patent Documents

[0003] [[ID=?]] [[ID=?]]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the configuration described in the above Patent Document 1, it is difficult to inject mortar while supporting the bag-shaped reinforcing material at a desired position inside the hollow portion of the concrete utility pole. The present invention has been made in view of the above actual situation, and an object thereof is to provide a column reinforcement bag material, a bag support bar material, a column reinforcement method, and a valve that can more easily reinforce a column.

Means for Solving the Problems

[0005] It should be noted that the "?" in the translation indicates that the original text's numbering system might be a bit unclear or there might be a formatting issue. But the translation adheres to the requirements as closely as possible.In order to achieve the above object, a column reinforcing bag material according to a first aspect of the present invention is located within a cavity of a column, formed in a bag shape extending in the height direction of the column, and has a bag body that adheres to the inner peripheral surface of the column when a filling material is filled therein, an injection port that is an inlet for supplying the filling material having fluidity before curing into the bag body, and a hook portion that is attached to an end portion far from the ground among both ends in the longitudinal direction of the bag body and is configured to be able to hook the tip of a bag support bar.

[0006] In order to achieve the above object, a bag support bar according to a second aspect of the present invention is a bag support bar used for suspending the column reinforcing bag material within the cavity of the column when filling the column reinforcing bag material with a filling material having fluidity before curing. The bag support bar has a rod shape and includes a first straight rod portion and a second straight rod portion whose ends are connected at an intersecting angle with each other, a support tip portion formed at the tip of the second straight rod portion and configured to be able to suspend the column reinforcing bag material by hooking the hook portion of the column reinforcing bag material, and a rod supported portion provided on the first straight rod portion and supported via a suspension belt material by a pole gripping portion attached to the outer periphery of the column. The bag support bar is configured such that the first straight rod portion passes through a column opening formed in the side peripheral wall of the column so as to communicate with the cavity, and in a state where the rod supported portion is supported via the suspension belt material by the pole gripping portion outside the cavity of the column, the support tip portion maintains the posture of suspending the column reinforcing bag material within the cavity of the column.

[0007] To achieve the above object, the column reinforcement method according to the third aspect of the present invention is a column reinforcement method using the column reinforcement bag material and the bag support bar material. In a state where the column reinforcement bag material is suspended in the cavity of the column at the support tip of the bag support bar material, a first step of supporting the first straight bar portion of the bag support bar material on the pole grasping portion via the lifting belt material; a second step, which is a step after the first step, of filling a filling material having fluidity before curing from the injection port to an intermediate position within the bag body; a third step, which is a step after the second step, of extracting the second straight bar portion through the column opening from the cavity of the column in a state where the bag body is in close contact with the inner peripheral surface of the column without shifting due to the filling material up to the intermediate position within the bag body; and a fourth step, which is a step after the third step, of filling a filling material having fluidity before curing from the injection port into the remaining area within the bag body.

[0008] To achieve the above object, the valve according to the fourth aspect of the present invention is a valve connected to the injection port of the column reinforcement bag material. The valve has a cylindrical shape that overlaps in the radial direction of the cylindrical injection port, and includes a connected cylinder portion to which a filling material having fluidity before curing is supplied from the outside. The injection port and the connected cylinder portion each have a through hole penetrating in the radial direction. The connected cylinder portion is configured to be rotated with respect to the injection port about the rotation axis of the connected cylinder portion, so that the through holes of the injection port and the connected cylinder portion are in a first state where they overlap in the radial direction and a second state where the through holes of the injection port and the connected cylinder portion do not overlap in the radial direction. In the first state, the filling material flowing into the connected cylinder portion is configured to be supplied into the column opening formed in the column through the through hole overlapping in the radial direction. In the second state, the filling material flowing into the connected cylinder portion can be supplied into the bag body and is configured not to be supplied into the column opening.

Advantages of the Invention

[0009] According to the present invention, column reinforcement can be performed more easily.

Brief Description of the Drawings

[0010]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Embodiments for Carrying Out the Invention

[0011] A column reinforcement bag material, a bag support bar, a column reinforcement method, and a valve according to an embodiment of the present invention will be described with reference to the drawings. As shown in FIGS. 1 to 4, the column reinforcement method set includes a bag material 20, a bag support bar 30, and a valve 60.

[0012] (Bag material 20) As shown in FIGS. 4(d) and (e), the bag material 20 is filled with a filling material 40, which is a fluid hardening agent such as mortar, in the cavity 52 of the utility pole 50, and adheres to the inner peripheral surface of the cavity 52 via an adhesive 58. Thereby, the bag material 20 functions as a reinforcing material that enhances the strength of the utility pole 50 together with the filling material 40 filled therein.

[0013] As shown in FIGS. 1(a) to 1(d), the bag material 20 includes a bag body 21, a catching portion 22, and a pouring port 25. The bag body 21 is formed in a tubular shape by folding a flexible fiber sheet in the short direction of the bag body 21, and both ends in the longitudinal direction of the bag body 21 are closed by sewing lines L1 and L2. This fiber sheet is formed, for example, by bundling a large number of high-strength fibers such as aramid fibers, carbon fibers, and glass fibers and impregnating and solidifying them with a phenolic, polyester, epoxy, or acrylic resin.

[0014] The catching portion 22 is attached to one end in the longitudinal direction of the bag body 21 (the upper end in FIG. 1(a)) and is configured to be supported by a bag support bar 30 (see FIGS. 3(c) and 3(d)). The catching portion 22 is formed in a U shape by a strip-shaped fiber material, and both ends on the opening side of the U shape are fixed to the upper end of the bag body 21. The catching portion 22 is located at the center in the short direction of the upper end of the bag body 21. The strip-shaped catching portion 22 is configured in a U shape by folding both sides of the central portion 22a in the extending direction of the catching portion 22 toward the upper end of the bag body 21.

[0015] As shown in FIG. 1(b), both ends on the opening side of the U-shaped catching portion 22 are sandwiched between the bag bodies 21 that overlap in the thickness direction and are fixed by a plurality of sewing lines L3 as shown in FIG. 1(a). The plurality of (three in this example) sewing lines L3 extend in the short direction of the bag body 21 so as to be parallel to each other and are arranged in the longitudinal direction of the bag body 21.

[0016] As shown in FIG. 1(d), the pouring port 25 is made of resin and has a cylindrical shape, and is provided so as to protrude from the outer peripheral surface of the bag body 21. When the end portion of the pouring port 25 is attached to the bag body 21, the internal space of the pouring port 25 is continuous with the inside of the bag body 21. The pouring port 25 is located substantially at the center in the longitudinal direction of the bag body 21, for example, closer to the catching portion 22 than the center. On the inner peripheral surface 25i of the pouring port 25, a female screw that screws into the male screw of the connected cylinder portion 65 (see FIG. 5) of the valve 60 described later is formed. As shown in FIGS. 5(d) and 5(e), the injection port 25 includes a plurality (two in this example) of through holes 25h. The two through holes 25h are holes that penetrate in the radial direction of the injection port 25, and are formed at positions facing each other in the radial direction (particularly, the longitudinal direction of the bag body 21).

[0017] (Bag support rod 30) As shown in FIGS. 4(a) and 4(b), the bag support rod 30 is used to suspend the bag material 20 in the cavity 52 of the utility pole 50 through the engaging portion 22 in the utility pole reinforcement method described later. As shown in FIGS. 2(a) to 2(d), the bag support rod 30 includes a connecting rod portion 31, a support tip portion 32, and a rod supported portion 33.

[0018] The connecting rod portion 31 has a substantially L-shaped or substantially V-shaped rod shape. The connecting rod portion 31 includes a first straight rod portion 31a and a second straight rod portion 31b whose ends are connected to each other at an obtuse angle (for example, 95° to 120°). The length of the first straight rod portion 31a is shorter than the length of the second straight rod portion 31b. The support tip portion 32 is formed at the tip of the second straight rod portion 31b (the end opposite to the first straight rod portion 31a). The support tip portion 32 is configured to be able to hook the engaging portion 22 of the bag material 20.

[0019] As shown in FIGS. 2(c) and 2(d), the support tip portion 32 includes a U-shaped portion 32a and a guiding portion 32b. The U-shaped portion 32a is located at the tip of the second straight rod portion 31b and has a U-shaped penetration shape in the radial direction of the second straight rod portion 31b. When supporting the bag material 20 at the support tip portion 32, the central portion 22a (see FIG. 1(a)) of the engaging portion 22 is located at the bottom of the U-shaped portion 32a. The guiding portion 32b is formed on the tip surface of the second straight rod portion 31b and is an inclined surface that connects the outer peripheral surface of the second straight rod portion 31b and the inner side wall surface of the U-shaped portion 32a. This inclined surface is inclined so as to advance toward the tip of the second straight rod portion 31b as it goes outward in the radial direction of the second straight rod portion 31b, and is formed so as to guide the central portion 22a of the engaging portion 22 into the U-shaped portion 32a.

[0020] The rod support part 33 is fixed to the first straight rod part 31a and is configured to be supportable via a lifting belt material 78 to a utility pole gripping part 71 that grips the outer circumference of the utility pole 50 as shown in FIG. 3(d). As shown in FIG. 2(a), the rod support part 33 includes a ring part 33a and a fixing part 33b. The ring part 33a is a part where the lifting belt material 78 is hooked. The fixing part 33b is fixed to the first straight rod part 31a (exactly, near the second straight rod part 31b at the longitudinal center of the first straight rod part 31a) and supports the ring part 33a at a position separated upward from the first straight rod part 31a. The ring part 33a is provided in a direction along the direction orthogonal to the two facing inner wall surfaces of the U-shaped part 32a.

[0021] (Valve 60) As shown in FIG. 5(c), the valve 60 is configured to be connectable to the injection port 25 of the bag material 20 and is configured to be able to switch the supply path of the mortar passing through the filling material supply path 68 from a pump (not shown). The valve 60 includes an opening / closing operation part 61 and a connected cylinder part 65. The opening / closing operation part 61 switches the state of the valve 60 between an open state in which the mortar from a pump (not shown) passes through the connected cylinder part 65 and a closed state in which the passage of the mortar from a pump (not shown) to the connected cylinder part 65 is blocked by the operation of an operator.

[0022] The connected cylinder part 65 is formed in a cylindrical shape and is configured to be insertable into the injection port 25. A male screw is formed on the outer peripheral surface of the connected cylinder part 65, and this male screw is configured to be screwable with the female screw on the inner peripheral surface 25i of the injection port 25. As shown in FIGS. 5(d) and 5(e), the connected cylinder part 65 includes a plurality (two in this example) of through holes 65h. The two through holes 65h are holes that penetrate in the radial direction of the connected cylinder part 65 and are formed at positions facing each other in the radial direction.

[0023] With the valve 60 screwed into the injection port 25, the state of the valve 60 can be switched between a side discharge permission state in which mortar is discharged into the utility pole opening 51 shown in FIG. 5(e) and a side discharge blocking state in which mortar is not discharged into the utility pole opening 51 shown in FIG. 5(d) by rotating the valve 60 about the rotation axis J of the connected cylinder portion 65.

[0024] In the side discharge blocking state shown in FIG. 5(d), in the circumferential direction centered on the rotation axis J, each through hole 65h and each through hole 25h are at different positions, and in this example, they are 90° apart. In this side discharge blocking state, as shown in FIG. 5(b), the mortar from a pump (not shown) passes through the connected cylinder portion 65 and is supplied only into the bag body 21.

[0025] In the side discharge permission state shown in FIG. 5(e), in the circumferential direction centered on the rotation axis J, each through hole 65h and each through hole 25h are positioned to coincide. In this side discharge permission state, the mortar from a pump (not shown) passes through the connected cylinder portion 65 and is supplied into the bag body 21, and in the connected cylinder portion 65, it is also supplied into the utility pole opening 51 through the through hole 65h and the through hole 25h.

[0026] (Utility Pole Reinforcement Method) Next, the utility pole reinforcement method performed by the operator will be described. Before the start of this utility pole reinforcement method, as shown in FIG. 3(a), a utility pole opening 51, which is a hole having a long shape in the height direction, for example, an elliptical shape, is formed in the side peripheral wall of the utility pole 50. First, an adhesive is applied to the entire outer peripheral surface of the bag body 21 of the bag material 20. Then, as shown in FIG. 3(b), the bag material 20 is inserted into the cavity 52 of the utility pole 50 from the utility pole opening 51. When this insertion is completed, as shown by the dashed-dotted line in FIG. 3(b), the lower end of the bag material 20 abuts against the inner bottom surface 50B of the utility pole 50, and the hooked portion 22 of the bag material 20 is at the same height as a part of the utility pole opening 51.

[0027] Next, as shown in Fig. 3(c), insert the supported tip portion 32 of the bag support rod 30 into the cavity 52 of the utility pole 50 and hook it from below onto the engaging portion 22 of the bag material 20. At this time, the first straight rod portion 31a of the bag support rod 30 is in a posture substantially parallel to the ground G outside the utility pole 50. Substantially parallel means including an angular range of ±5° with respect to the ground G. Then, as shown by the arrow A1 in Fig. 3(c), lift the bag support rod 30 in a direction inclined with respect to the central axis of the utility pole 50 along the second straight rod portion 31b. Thereby, as shown in Fig. 3(d), bring the supported tip portion 32 into contact with the inner peripheral surface of the utility pole 50 (particularly, at a position on the opposite side above the utility pole opening 51 among this inner peripheral surface). At this time, the first straight rod portion 31a maintains a posture substantially parallel to the ground G at the upper end portion of the utility pole opening 51, and the inlet 25 of the bag material 20 is located within the utility pole opening 51. Then, support the rod supported portion 33 of the bag support rod 30 by suspending it via a suspension belt material 78 on the utility pole gripping portion 71. Thereby, even when the operator releases their hand from the bag support rod 30, due to the lever principle, the supported tip portion 32 is maintained in a state of being pressed against the inner peripheral surface of the utility pole 50.

[0028] Next, as shown in Figs. 5(a) and (b), screw the valve 60 onto the inlet 25 of the bag material 20. The valve 60 is connected to a pump (not shown) that pumps out mortar via a filler supply path 68. The valve 60 is set to a side discharge blocking state in which a fluid filler (mortar) is not discharged into the utility pole opening 51 shown in Fig. 5(d) described above. Then, as shown in Fig. 4(a), by operating a pump (not shown), a fluid filler (mortar) is supplied into the bag body 21 via the filler supply path 68, the valve 60, and the inlet 25. The fluid filler is filled from the lower side within the bag body 21 by gravity. Then, when the liquid level of the filler 40, which is the filled fluid filler, reaches the intermediate position P, stop the operation of the pump (not shown). The intermediate position P is a position below the utility pole opening 51.

[0029] The bag body 21 is deformed by the filling material 40 up to the intermediate position P so as to bulge outward in the radial direction of the utility pole 50. As a result, a force F1 is generated by which the filling material 40 presses the bag body 21 against the inner peripheral surface of the utility pole 50. Due to this force F1, the bag body 21 adheres closely to the inner peripheral surface of the utility pole 50, and the bag body 21 is maintained at a position away from the inner bottom surface 50B of the utility pole 50 within the cavity 52 of the utility pole 50 even without the support of the bag support bar 30.

[0030] Next, the lifting belt material 78 is removed from the bar supported portion 33 of the bag support bar 30, and the support state of the bag material 20 by the bag support bar 30 is released. Then, as shown by the arrow A2 in Fig. 4(b), the second straight bar portion 31b of the bag support bar 30 is withdrawn from the utility pole opening 51. As a result, the supported tip portion 32 of the bag support bar 30 is removed from the hooked portion 22 of the bag material 20. Next, as shown in Fig. 4(c), with the covering plate materials 75a, 75b covering the utility pole opening 51 applied to the outer peripheral surface of the utility pole 50, the covering plate materials 75a, 75b are fixed by the utility pole gripping portions 72a, 72b, 72c, 72d that cover the outer periphery of the utility pole 50.

[0031] The covering plate material 75a covers the range above the injection port 25 in the utility pole opening 51, and the covering plate material 75b covers the range below the injection port 25 in the utility pole opening 51. The covering plate materials 75a, 75b suppress the leakage of the filling material 40 before hardening filled in the utility pole opening 51 to the outside. The utility pole gripping portions 72a, 72b hold the upper and lower end portions of the covering plate material 75a to the utility pole 50, and the utility pole gripping portions 72c, 72d hold the upper and lower end portions of the covering plate material 75b to the utility pole 50.

[0032] Then, by rotating the valve 60 by 90° about the rotation axis J, the side discharge blocking state shown in FIG. 5(d) described above is changed to the side discharge permission state shown in FIG. 5(e). Next, by operating the pump (not shown) again, the supply of the pre-curing filler into the bag body 21 is resumed. As a result, the pre-curing filler 40 is filled above the intermediate position P in the bag body 21 and also filled into the pole opening 51. Therefore, as shown in FIG. 4(d), the filler 40 fills the entire areas of both the inside of the bag body 21 and the pole opening 51. When the filler 40 and the adhesive 58 (see FIG. 4(e)) are cured, the strength of the pole 50 is increased by the bag body 21 (reinforcing fiber material) and the filler 40. In particular, in this pole reinforcement method, in the height direction of the pole 50, the position and range of the bag body 21 filled with the filler 40 can be arbitrarily set, and the strength of the desired position and range of the pole 50 can be increased. Finally, the pole gripping portions 72a, 72b, 72c, 72d and the covering plate members 75a, 75b are removed from the pole 50, and the pole reinforcement method is completed. Note that the timing for setting the valve 60 to the side discharge permission state is not limited to the above, and it may be after the entire area of the bag body 21 is filled with the filler 40.

[0033] (Effect) According to the above-described embodiment, the following effects can be obtained. (1) The bag material 20, which is an example of the column reinforcement bag material, is located in the cavity 52 of the pole 50 and is formed in a bag shape extending in the height direction of the pole 50. The bag body 21 is in close contact with the inner peripheral surface of the pole 50 by being filled with the filler 40 inside. The injection port 25 is an inlet for supplying the pre-curing filler 40 having fluidity inside the bag body 21. The engaging portion 22 is attached to the upper end portion far from the ground G among both ends in the longitudinal direction of the bag body 21 and is configured to be able to hook the support tip portion 32 located at the tip of the bag support bar 30. According to this configuration, since the engaging portion 22 is provided on the bag material 20, it is possible to easily supply the pre-curing filler 40 into the bag body 21 in a state where the bag material 20 is suspended in the cavity 52 of the pole 50 via the engaging portion 22 by the bag support bar 30. For example, as a comparative example, a balloon was attached to the upper end of the bag material, and this balloon was inflated inside the cavity of the utility pole and brought into close contact with the inner peripheral surface of the utility pole, so that the bag material was suspended inside the cavity of the utility pole by this balloon. In the configuration according to this comparative example, the configuration for supplying air to the balloon is complicated, and there is a risk of the balloon bursting, and the balloon remains inside the utility pole even after the reinforcement is completed, so it was not preferable. In this regard, in the present embodiment, a configuration for supplying air to the balloon is not required, the configuration is simple, and the balloon does not burst and does not remain inside the utility pole.

[0034] (2) The bag support rod 30 is used to suspend the bag material 20 inside the cavity 52 of the utility pole 50 when filling the bag material 20 with the uncured filler 40. The bag support rod 30 has a rod shape, and includes a first straight rod portion 31a and a second straight rod portion 31b whose ends are connected at an intersecting angle, a support tip portion 32 formed at the tip of the second straight rod portion 31b and configured to be able to suspend the bag material 20 by hooking on the hooking portion 22 of the bag material 20, and a rod supported portion 33 fixed to the first straight rod portion 31a and supported by a lifting belt material 78 on a utility pole gripping portion 71 attached to the outer periphery of the utility pole 50. The bag support rod 30 is configured such that the first straight rod portion 31a passes through a utility pole opening 51 formed on the side peripheral wall of the utility pole 50 so as to communicate with the cavity 52, and in a state where the rod supported portion 33 is supported by the utility pole gripping portion 71 via the lifting belt material 78 outside the cavity 52 of the utility pole 50, the support tip portion 32 maintains the posture of suspending the bag material 20 inside the cavity 52 of the utility pole 50. According to this configuration, by using the bag support rod 30, it is possible to easily supply the uncured filler 40 into the bag body 21 while the bag material 20 is suspended inside the cavity 52 of the utility pole 50.

[0035] (3) The angle formed by the first straight rod portion 31a and the second straight rod portion 31b of the bag support rod 30 is set to an obtuse angle. The bag support rod 30 is configured such that in a state where the first straight rod portion 31a is supported by the utility pole gripping portion 71 via the lifting belt material 78, the first straight rod portion 31a extends substantially parallel to the ground G and the support tip portion 32 abuts against the inner peripheral surface of the utility pole 50. According to this configuration, when the support tip 32 abuts against the inner peripheral surface of the utility pole 50, the bag material 20 can be more stably suspended in the cavity 52 of the utility pole 50 by the bag support rod 30. Further, since the first straight rod portion 31a is in a posture substantially parallel to the ground G, the bag support rod 30 is stably supported by the utility pole gripping portion 71 via the lifting belt material 78. Also, when removing the second straight rod portion 31b from the cavity 52 of the utility pole 50, interference of the second straight rod portion 31b with the injection port 25 is suppressed.

[0036] (4) The column reinforcement method using the bag material 20 and the bag support rod 30 includes a first step of suspending the bag material 20 in the cavity 52 of the utility pole 50 at the support tip 32 of the bag support rod 30 and supporting the first straight rod portion 31a of the bag support rod 30 by the utility pole gripping portion 71 via the lifting belt material 78, a second step which is a step after the first step and involves filling the uncured filling material 40 from the injection port 25 to the intermediate position P in the bag body 21, a third step which is a step after the second step and involves passing the second straight rod portion 31b through the utility pole opening 51 and removing it from the cavity 52 of the utility pole 50 in a state where the bag body 21 is in close contact with the inner peripheral surface of the utility pole 50 without shifting due to the filling material 40 up to the intermediate position P in the bag body 21, and a fourth step which is a step after the third step and involves filling the remaining region in the bag body 21 with the uncured filling material 40 from the injection port 25. According to this configuration, it becomes possible to easily supply the filling material 40 into the bag body 21 with the bag material 20 suspended in the cavity 52 of the utility pole 50.

[0037] (5) The valve 60 connected to the inlet 25 of the bag material 20 has a cylindrical shape that overlaps in the radial direction of the cylindrical inlet 25, and includes a connected cylinder portion 65 to which the pre-curing filler 40 with fluidity is supplied from the outside. The inlet 25 and the connected cylinder portion 65 each have through holes 25h and 65h that penetrate in the radial direction. The connected cylinder portion 65 can be switched between a side discharge permission state, which is an example of a first state where the through holes 25h and 65h of the inlet 25 and the connected cylinder portion 65 overlap in the radial direction, and a side discharge blocking state, which is an example of a second state where the through holes 25h and 65h of the inlet 25 and the connected cylinder portion 65 do not overlap in the radial direction, by being rotated with respect to the inlet 25 about its rotation axis J. In the side discharge permission state, the connected cylinder portion 65 supplies the filler 40 that has flowed into the connected cylinder portion 65 through the overlapping through holes 25h and 65h in the radial direction into the pole opening 51 formed in the utility pole 50. In the side discharge blocking state, the filler 40 that has flowed into the connected cylinder portion 65 is supplied into the bag body 21 and not into the pole opening 51. According to this configuration, it is possible to easily fill the filler 40 into the pole opening 51.

[0038] Note that the present invention is not limited to the above embodiments and drawings. Modifications (including deletion of components) can be appropriately made without changing the gist of the present invention. An example of a modification will be described below.

[0039] (Modification example) The object to be reinforced in the above embodiment was the utility pole 50, but it is not limited to the utility pole 50 and may be a hollow pole other than the utility pole 50. Further, this pole is not limited to being made of concrete and may be made of metal. In the above embodiment, the connected cylinder portion 65 was configured to be screwable on the inner peripheral side of the inlet 25, but it is not limited to this and may be configured to be screwable on the outer peripheral side of the inlet 25. Also, the connected cylinder portion 65 was configured to be screwable to the inlet 25, but it is not limited to this and may be configured to be lockable to the inlet 25 by a hook. In the above embodiment, the angle formed by the first straight rod portion 31a and the second straight rod portion 31b was an obtuse angle, but it is not limited to an obtuse angle and may be a right angle or an acute angle. In the above embodiment, the rod supported portion 33 may be configured as a part of the first straight rod portion 31a, and a part of this first straight rod portion 31a may be directly supported by the lifting belt material 78. In the above embodiment, the catching portion 22 is not limited to a fiber material and may be formed of resin or metal. In the above embodiment, two through holes 25h, 65h were formed in each of the injection port 25 and the connected cylinder portion 65 at positions 180° apart around the rotation axis J, but the number of the through holes 25h, 65h may be one or three or more. Further, the arrangement of the through holes 25h, 65h is not limited to positions 180° apart. The attracting portion 32b in the above embodiment may be omitted. The through holes 25h, 65h in the above embodiment may be omitted. In the above embodiment, with the bag material 20 suspended by the bag support rod member 30, the first straight rod portion 31a was in a posture parallel (including substantially parallel) to the ground G, but it is not limited to this and may be in a posture non-parallel to the ground G. In the above embodiment, the support tip portion 32 had a U shape, but as long as it can be caught by the catching portion 22, it is not limited to a U shape and may be any shape. The shape of the catching portion 22 can also be appropriately changed according to the shape of the support tip portion 32. In the above embodiment, the catching portion 22 is not limited to the upper end of the bag body 21 and may be at any position above the injection port 25 of the bag body 21.

Explanation of Reference Numerals

[0040] 20…Bag material, 21…Bag body, 22…Hooking part, 22a…Central part, 25…Inlet, 25h…Through hole, 25i…Inner peripheral surface, 30…Bag support bar, 31…Connecting bar part, 31a…First straight bar part, 31b…Second straight bar part, 32…Support tip part, 32a…U-shaped part, 32b…Enticing part, 33…Bar supported part, 33a…Ring part, 33b…Fixing part, 40…Filling material, 50…Power pole, 50B…Inner bottom surface, 51…Power pole opening, 52…Hollow, 58…Adhesive, 60…Valve, 61…Opening and closing operation part, 65…Connected cylinder part, 65h…Through hole, 68…Filling material supply path, 71, 72a, 72b, 72c, 72d…Power pole gripping part, 75a, 75b…Covering plate material, 78…Lifting belt material, G…Ground, F1…Force, J…Rotation axis, L1, L2, L3…Sewing line, P…Intermediate position

Claims

1. A bag body that is located inside the cavity of a column, is formed in a bag shape extending in the height direction of the column, and adheres to the inner peripheral surface of the column when filled with a filler; An injection port that is an inlet for supplying the filler having fluidity before curing into the bag body; A hooking portion that is attached to an end far from the ground among both ends in the longitudinal direction of the bag body and is configured to be able to hook the tip of a bag support bar; and it comprises a column reinforcing bag material. Column reinforcing bag material.

2. A bag support bar used for suspending the column reinforcing bag material in the cavity of the column when filling the column reinforcing bag material with a filler having fluidity before curing, A first straight bar portion and a second straight bar portion that are rod-shaped and have ends connected to each other at an intersecting angle; A support tip portion formed at the tip of the second straight bar portion and configured to be able to suspend the column reinforcing bag material by hooking on the hooking portion of the column reinforcing bag material; A rod supported portion provided on the first straight bar portion and supported via a lifting belt material by a pole grasping portion attached to the outer periphery of the column; and it comprises a bag support bar. The bag support bar is configured such that the first straight bar portion passes through a column opening formed on a side peripheral wall of the column so as to connect to the cavity, and in a state where the rod supported portion is supported by the pole grasping portion via the lifting belt material outside the cavity of the column, it maintains the posture of suspending the column reinforcing bag material in the cavity of the column by the support tip portion. Bag support bar.

3. The angle formed by the first straight bar portion and the second straight bar portion is set to an obtuse angle, The bag support bar is configured such that in a state where the first straight bar portion is supported by the pole grasping portion via the lifting belt material, the first straight bar portion is along the ground and the support tip portion abuts on the inner peripheral surface of the column. The bag support bar according to Claim 2.

4. A column reinforcement method using the column reinforcing bag material according to Claim 1 and the bag support bar according to Claim 2 or 3, A first step of suspending the column reinforcing bag material in the cavity of the column at the support tip portion of the bag support bar and supporting the first straight bar portion of the bag support bar by the pole grasping portion via the lifting belt material; A second step that is a step after the first step and fills the bag body with a filler having fluidity before curing from the injection port to an intermediate position inside the bag body. A third step, which is a step after the second step, in which the second straight rod portion is passed through the cavity of the column and extracted through the column opening in a state where the bag body is in close contact with the inner peripheral surface of the column without shifting due to the filler up to the intermediate position in the bag body. A fourth step, which is a step after the third step, in which a filler having fluidity before curing is filled into the remaining region in the bag body from the injection port. Column reinforcement method.

5. A valve connected to the injection port of the column reinforcement bag material according to claim 1, Comprising a connected cylinder portion having a cylindrical shape overlapping in the radial direction of the injection port having a cylindrical shape, and a filler having fluidity before curing is supplied from the outside. The injection port and the connected cylinder portion each have a through hole penetrating in the radial direction. The connected cylinder portion can be switched between a first state in which the through holes of the injection port and the connected cylinder portion overlap in the radial direction and a second state in which the through holes of the injection port and the connected cylinder portion do not overlap in the radial direction by being rotated with respect to the injection port around the rotation axis of the connected cylinder portion. In the first state, the filler flowing into the connected cylinder portion is configured to be supplied into the column opening formed in the column through the through hole overlapping in the radial direction. In the second state, the filler flowing into the connected cylinder portion can be supplied into the bag body and is configured not to be supplied into the column opening. Valve.

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