WO2022003805A1

WO2022003805A1 - Utility pole reinforcing method and utility pole reinforcing member

Info

Publication number: WO2022003805A1
Application number: PCT/JP2020/025614
Authority: WO
Inventors: 正樹和氣; 裕明谷岡; 亮一金子; 聡一石川
Original assignee: 日本電信電話株式会社
Priority date: 2020-06-30
Filing date: 2020-06-30
Publication date: 2022-01-06

Abstract

According to this utility pole reinforcing method, a utility pole reinforcing mechanism is inserted, with a base thereof being extended in a vertical direction, into an internal cavity of a hollow utility pole having a circumferential wall formed into a tapered shape of which the size in a first radial direction intersecting the vertical direction becomes smaller toward the top in the vertical direction. The utility pole reinforcing mechanism is installed in the internal cavity in a state in which a plurality of division plates are extended from the base to the circumferential wall, so that the internal cavity is divided into a plurality of sections with respect to a direction around an axis along the vertical direction. A blocking plate connected to the opposite side to the base in one of the plurality of division plates blocks a through-hole through the circumferential wall from the inner peripheral side in the first radial direction. A utility pole reinforcing member with a tapered shape of which the size in a second radial direction intersecting the vertical direction becomes smaller toward the top in the vertical direction is installed in each of the plurality of sections. In each of the plurality of sections, the utility pole reinforcing member is contacted with the blocking plate or the circumferential wall from the inner peripheral side in the first radial direction.

Description

Utility pole reinforcement method and utility pole reinforcement member

The present invention relates to a utility pole reinforcement method and a utility pole reinforcement member.

The utility pole is made of a metal material or a concrete material because the inside of the utility pole is hollow and is formed in a tapered shape in the longitudinal direction. This utility pole is installed for the purpose of laying power lines and communication lines in the sky. Patent Document 1 describes a reinforcing method for an existing pole or the like which is formed in a cylindrical shape whose radial size is constant in the longitudinal direction and whose inside is hollow. In this reinforcing method, a utility pole reinforcing member or the like is inserted into a hollow portion formed inside the pole from the upper part of the existing pole, and a filler is provided inside the pole. As a result, the strength of the existing pole or the like is improved, and the deteriorated portion of the existing pole or the like is reinforced.

Japanese Patent No. 6365998

When the utility pole reinforcing member is installed inside the utility pole formed in a tapered shape to reinforce the utility pole, the radial size of the utility pole reinforcing member may be limited by the inner diameter of the upper end of the utility pole. Therefore, it is required to develop a utility pole reinforcement method for a utility pole formed in a tapered shape.

In addition, in utility poles such as steel pipe columns, through holes may be formed in the utility poles due to corrosion such as rust. Therefore, there is a demand for a utility pole reinforcement method capable of reinforcing a utility pole even if a through hole is formed in the utility pole.

Therefore, an object of the present invention is to provide a utility pole reinforcing method and a utility pole reinforcing member which can reinforce a utility pole formed in a tapered shape with high strength and can reinforce even if a through hole is formed in the utility pole. And.

In order to solve the above problems, in the utility pole reinforcement method according to the present invention, a hollow utility pole in which a peripheral wall is formed in a tapered shape in which the size in the first radial direction intersecting the vertical direction becomes smaller toward the upper side in the vertical direction. Insert the utility pole reinforcement mechanism into the internal cavity with the base extending in the vertical direction. By installing a utility pole reinforcement mechanism in the internal cavity with a plurality of partition plates extending from the base to the peripheral wall, the internal cavity is divided into a plurality of sections in the axial direction of the axis along the vertical direction. The through hole penetrating the peripheral wall is closed from the inner peripheral side in the first radial direction by the closing plate connected to the side opposite to the base in one of the plurality of partition plates. A taper-shaped utility pole reinforcing member having a smaller diameter in the second radial direction that intersects the vertical direction toward the upper side in the vertical direction is installed in each of the plurality of sections. In each of the plurality of sections, the utility pole reinforcing member is brought into contact with the block plate or the peripheral wall from the inner peripheral side in the first radial direction.

Further, in the utility pole reinforcement method according to the present invention, the utility pole reinforcement member is installed in any one of a plurality of sections of the hollow utility pole and has the same second average taper as the first average taper of the hollow utility pole. It has a certain tapered shape.

According to the present invention, it is possible to provide a utility pole reinforcing method and a utility pole reinforcing member which can reinforce a utility pole formed in a tapered shape with high strength and can reinforce even if a through hole is formed in the utility pole. ..

FIG. 1 is a schematic view showing a cross section of a utility pole according to an embodiment. FIG. 2 is a schematic view showing a utility pole reinforcing member according to an embodiment. FIG. 3 is a schematic view showing a utility pole reinforcement mechanism according to an embodiment. FIG. 4 is a schematic view showing a state of preparing for inserting a utility pole reinforcing member and a utility pole reinforcing mechanism in the utility pole reinforcing method according to the embodiment. FIG. 5 is a schematic view showing a state in which the utility pole reinforcement mechanism is inserted into the utility pole in the utility pole reinforcement method according to the embodiment. FIG. 6 is a schematic view showing a state in which a utility pole reinforcing member is inserted into a utility pole in the utility pole reinforcement method according to the embodiment. FIG. 7A is a schematic view showing a state in which the utility pole reinforcing member and the utility pole reinforcing mechanism have been inserted in the utility pole reinforcing method according to the embodiment. FIG. 7B is a schematic view showing a state in which the utility pole reinforcing member and the utility pole reinforcing mechanism have been inserted in the utility pole reinforcing method according to the embodiment with a cross section different from that of FIG. 7A. FIG. 8 is a schematic view showing a state in which a filler is supplied to the utility pole in the utility pole reinforcement method according to the embodiment. FIG. 9 is a flowchart showing a utility pole reinforcement method according to the embodiment.

In the utility pole reinforcement method according to the present embodiment, the base is vertical in the internal cavity of the hollow utility pole in which the peripheral wall is formed in a tapered shape in which the size in the first radial direction intersecting the vertical direction becomes smaller toward the upper side in the vertical direction. Insert the utility pole reinforcement mechanism in a state of being extended in the direction. By installing a utility pole reinforcement mechanism in the internal cavity with a plurality of partition plates extending from the base to the peripheral wall, the internal cavity is divided into a plurality of sections in the axial direction of the axis along the vertical direction. The through hole penetrating the peripheral wall is closed from the inner peripheral side in the first radial direction by the closing plate connected to the side opposite to the base in one of the plurality of partition plates. A taper-shaped utility pole reinforcing member having a smaller diameter in the second radial direction that intersects the vertical direction toward the upper side in the vertical direction is installed in each of the plurality of sections. In each of the plurality of sections, the utility pole reinforcing member is brought into contact with the block plate or the peripheral wall from the inner peripheral side in the first radial direction. According to this, the tapered utility pole reinforcing member can be arranged at an appropriate position in the internal cavity of the tapered utility pole. In addition, the through hole formed in the hollow utility pole can be closed. Therefore, by the utility pole reinforcement method, the utility pole formed in a tapered shape can be reinforced with high strength, and even if a through hole is formed in the utility pole, it can be reinforced.

Further, inserting the utility pole reinforcement mechanism into the internal cavity may be inserting the utility pole reinforcement mechanism into the internal cavity from the upper side in the vertical direction. Installing the utility pole reinforcing member in each of the plurality of sections may be to insert the utility pole reinforcing member into the internal cavity from the upper side in the vertical direction and install the utility pole reinforcing member in each of the plurality of sections. .. According to this, the utility pole can be reinforced from the outside without excavating the ground or making a hole in the utility pole.

Further, dividing the internal cavity into a plurality of sections may mean that a plurality of partition plates divide the internal cavity into a plurality of sections having the same size with respect to each other in the axial direction. According to this, the operator who reinforces the utility pole can easily arrange the utility pole reinforcing member at an appropriate position in the internal cavity. In addition, variations in the arrangement of utility pole reinforcing members for each worker are suppressed.

Further, installing the utility pole reinforcing member in each of the plurality of sections means that if the hollow utility pole and the utility pole reinforcing member satisfy D3 <8 × d2, the three utility pole reinforcing members should be installed in each of the plurality of sections. Alternatively, if the hollow utility pole and the utility pole reinforcing member satisfy D3 ≧ 8 × d2, the four utility pole reinforcing members may be installed in each of the plurality of sections. According to this, the utility pole is satisfactorily reinforced.

Further, in the utility pole reinforcement method according to the present embodiment, a filler may be further supplied to the internal cavity, and a plurality of utility pole reinforcement members installed in the internal cavity may be embedded in the filler. The filler supplied to the internal cavity may be cured to integrate the utility pole reinforcing mechanism, a plurality of utility pole reinforcing members, and the hollow utility pole. According to this, the utility pole is further reinforced.

Further, the hollow utility pole may be formed from a steel pipe pole. The block plate may be formed of a material having the same coefficient of linear expansion as the coefficient of linear expansion of the steel pipe column or the coefficient of linear expansion of the filler. The utility pole reinforcing member may be formed of a material having the same coefficient of linear expansion as that of the steel pipe column. According to this, the load on the utility pole by the reinforcing portion integrated with the utility pole is suppressed.

Further, in the utility pole reinforcement method according to the present embodiment, the utility pole reinforcement member is installed in any one of a plurality of sections of the hollow utility pole, and has the same second average taper as the first average taper of the hollow utility pole. It may have a tapered shape. According to this, the utility pole formed in a tapered shape can be reinforced with high strength.

Further, both the first average taper and the second average taper may be 1/75 or 1/110. According to this, the utility pole formed in a tapered shape can be reinforced with high strength.

Next, an embodiment of the present invention will be described in detail with reference to the drawings as appropriate.

FIG. 1 is a schematic view showing a cross section of a utility pole according to an embodiment. The hollow utility pole 1 includes a hollow pole portion 2 and a lid member (pole cap) 3. Here, in the hollow electric column 1, the axial direction (direction indicated by the arrow H1 and the arrow H2) which is the direction of the center line O1 of the hollow electric column 1 and the first radial direction (vertical or substantially vertical) intersecting the axial direction (vertical or substantially vertical). The direction indicated by the arrow R1) is defined. Further, in FIG. 1, a horizontal direction (direction indicated by arrow X1 and arrow X2) and a vertical direction (vertical or substantially vertical) intersecting the horizontal direction (direction indicated by arrow Z1 and arrow Z2) are defined. The hollow utility pole 1 is erected with respect to the ground G in a state where the axial direction coincides with or substantially coincides with the vertical direction. The hollow utility pole 1 extends upward (the side indicated by the arrow H1) in the vertical direction from the ground G. That is, the hollow utility pole 1 stands vertically or substantially vertically with respect to the ground G.

The hollow pillar portion 2 includes a bottom wall 4 and a peripheral wall 5. The bottom wall 4 is provided on the lower side (the side indicated by the arrow H2) in the axial direction of the hollow pillar portion 2. The bottom wall 4 is formed in a disk shape or a substantially disk shape. The bottom wall 4 is provided below the surface of the ground G in the vertical direction. That is, the bottom wall 4 is buried in the ground G.

The peripheral wall 5 is provided above the bottom wall 4 in the axial direction. The peripheral wall 5 is provided on the outer peripheral side of the bottom wall 4 in the first radial direction. The peripheral wall 5 extends upward from the bottom wall 4 in the axial direction. A part of the peripheral wall 5 is provided below the surface of the ground G in the vertical direction. That is, a part of the peripheral wall 5 is buried in the ground G. In the present embodiment, the peripheral wall 5 is formed in a cylindrical shape or a substantially cylindrical shape. The peripheral wall 5 has an opening 6 formed at the upper end in the axial direction. Further, the peripheral wall 5 becomes smaller in the radial direction as the peripheral wall 5 moves upward in the axial direction. That is, the peripheral wall 5 is formed in a tapered shape. Therefore, the dimension of the bottom wall 4 in the first radial direction is larger than the dimension of the opening 6 of the peripheral wall 5 in the first radial direction. In one example, the average taper (first average taper) α of the peripheral wall 5, that is, the average taper α of the hollow utility pole 1 is 1/75 or 1/110. Here, the average taper α is defined by the following equation (1).

α = (D2-D1) / L (1)
Here, D1 is the outer diameter of the upper end of the peripheral wall 5 in the first radial direction. D2 is the diameter of the bottom wall 4 in the first radial direction, and corresponds to the outer diameter of the lower end of the peripheral wall 5 in the first radial direction. L is the length (pillar length) from the bottom wall 4 to the opening edge of the opening 6 in the axial direction. In the present embodiment, since the tapered shape of the peripheral wall 5 is a linear taper, D1 has the minimum outer diameter in the first radial direction of the peripheral wall 5. D2 is the maximum outer diameter of the peripheral wall 5 in the first radial direction.

An internal cavity 7 is formed in the hollow pillar portion 2. The peripheral wall 5 is arranged on the outer peripheral side in the first radial direction with respect to the internal cavity 7. That is, the inner surface 8 of the peripheral wall 5 is adjacent to the inner cavity 7 from the outer peripheral side in the first radial direction. The bottom wall 4 is arranged in the internal cavity 7 of the hollow pillar portion 2 from the lower side in the axial direction. That is, the upper surface 9 of the bottom wall 4 in the axial direction is adjacent to the internal cavity 7 from the lower side in the axial direction. The opening 6 of the peripheral wall 5 is arranged above the internal cavity 7 in the axial direction.

The lid member 3 includes a disk-shaped or substantially disk-shaped top wall. The lid member 3 is formed in a cylindrical shape or a substantially cylindrical shape. The lid member 3 is provided at the upper end of the hollow column portion 2 in the axial direction. The lid member 3 closes the opening 6 of the hollow column portion 2 from above in the axial direction. The lid member 3 is adjacent to the internal cavity 7 from the upper side in the axial direction. That is, the lid member 3 is provided on the side opposite to the bottom wall 4 with respect to the internal cavity 7 in the axial direction. The lid member 3 is removably attached to the peripheral wall 5 of the hollow pillar portion 2. By attaching the lid member 3 to the hollow pillar portion 2, it is possible to prevent rainwater, dust, etc. from entering the internal cavity 7 from the outside.

In the peripheral wall 5, a through hole 10 is formed on the lower side in the vertical direction. The through hole 10 is formed in the vicinity of the ground G in the vertical direction. The through hole 10 forms an opening edge 11 on the inner surface 8 of the peripheral wall 5. The internal cavity 7 communicates with the outside of the hollow pillar portion 2 by the through hole 10. In one example, the hollow column portion 2 is a steel pipe column. Steel pipe columns form steel plates in a cylindrical or substantially cylindrical shape. In this case, the through hole 10 is a corroded portion formed by the peripheral wall 5 being corroded by rust or the like.

FIG. 2 is a schematic view showing a utility pole reinforcing member according to an embodiment. The utility pole reinforcing member 20 includes a bottom portion 21, a body portion 22, and a suspension portion 23. Here, in FIG. 2, the height direction (direction indicated by arrows Z3 and Z4), which is the direction along the center line O2 passing through the center of the electric column reinforcing member 20, intersects with the height direction (vertical or substantially vertical). A second radial direction (direction indicated by arrow R2) is defined. In one example, the utility pole reinforcing member 20 has a height dimension much larger than a second radial dimension. That is, the utility pole reinforcing member 20 is formed in a columnar shape or a substantially columnar shape.

The bottom portion 21 is provided below the utility pole reinforcing member 20 in the height direction. The bottom portion 21 becomes smaller in the second radial direction as it goes downward in the height direction. In this embodiment, the bottom portion 21 is formed in a hemispherical shape or a substantially hemispherical shape. The body portion 22 is provided above the bottom portion 21 in the height direction. One end of the body portion 22 is connected to the upper end of the bottom portion 21 in the height direction. The body portion 22 extends upward from the upper end of the bottom portion 21 in the height direction. In the present embodiment, the body portion 22 is formed in a columnar shape or a substantially columnar shape centered on the center line O2. The body portion 22 becomes smaller in the second radial direction toward the upper side in the height direction. That is, the body portion 22 is formed in a tapered shape. In one example, the body 22 has a height dimension that is much larger than a second radial dimension.

In one example, the average taper (second average taper) β of the body portion 22, that is, the average taper β of the utility pole reinforcing member 20, is 1/75 or 1/110. Here, the average taper β is defined by the following equation (2).

β = (d2-d1) / h (2)
Here, d1 is the outer diameter in the second radial direction at the upper end of the body portion 22. d2 is the outer diameter in the second radial direction at the lower end of the body portion 22. h is the length (pillar length) from the lower end of the body portion 22 to the upper end of the body portion 22 in the axial direction. In the present embodiment, since the tapered shape of the body portion 22 is a linear taper, d1 is the minimum outer diameter in the second radial direction of the body portion 22. d2 is the maximum outer diameter of the body portion 22 in the second radial direction.

The suspension portion 23 is attached to the end of the body portion 22 opposite to the bottom portion 21 in the height direction. The suspension portion 23 is formed in a convex shape protruding upward in the height direction. In one example, the suspension 23 is formed in a semicircular or substantially semicircular ring.

It is preferable that the utility pole reinforcing member 20 is made of the same metal material as the hollow utility pole 1 (hollow pole portion 2). In one example, the utility pole reinforcing member 20 is preferably formed of a metal material having the same or substantially the same linear expansion coefficient (thermal expansion coefficient) as the metal forming the hollow utility pole 1. The coefficient of linear expansion is a value indicating the rate at which the length or volume of an object expands due to a temperature rise per temperature.

The utility pole reinforcing member 20 may be a hollow body. In this case, the utility pole reinforcing member 20 is formed in a cylindrical shape or a substantially cylindrical shape. Further, the body portion 22 is formed in a cylindrical shape or a substantially cylindrical shape.

FIG. 3 is a schematic view showing a utility pole reinforcement mechanism according to an embodiment. The utility pole reinforcing mechanism 30 includes a lower end portion 31, a base portion 32, an upper end portion 33, a suspension portion 34,

arm portions

35 and 36, and a plate portion 37. Here, in FIG. 3, the height direction (direction indicated by arrows Z5 and Z6), which is the direction along the center line O3 passing through the center of the electric column reinforcing mechanism 30, intersects with the height direction (vertical or substantially vertical). A third radial direction (direction indicated by arrow R3) is defined.

The lower end portion 31 is provided below the utility pole reinforcing mechanism 30 in the height direction. The base portion 32 is provided above the lower end portion 31 in the height direction. One end of the base portion 32 is connected to the lower end portion 31 from the upper side in the height direction. The base 32 is formed in a rod shape or a substantially rod shape. The upper end portion 33 is provided above the base portion 32 in the height direction. The end of the base 32 opposite to the lower end 31 in the height direction is connected to the upper end 33 from the lower side in the height direction. That is, the base portion 32 extends from the lower end portion 31 to the upper end portion 33 in the height direction. The suspension portion 34 is provided above the upper end portion 33 in the height direction. The suspension portion 34 is connected to the upper end portion 33 from the upper side in the height direction. The suspension portion 34 is formed in an annular shape or a substantially annular shape. In the present embodiment, the lower end portion 31, the base portion 32, the upper end portion 33, and the suspension portion 34 are connected in this order in the height direction.

The arm portion 35 includes a central portion 38 and an extension portion 39. The central portion 38 is provided so as to be movable along the base portion 32 in the height direction. The central portion 38 can move from the lower end portion 31 to the upper end portion 33 in the height direction. The central portion 38 is provided so as to be rotatable in the circumferential direction about the central axis along the height direction of the base portion 32. The extending portion 39 extends from the central portion 38 to the outer peripheral side in the third radial direction. One end of the extension 39 is connected to the central 38. The extending portion 39 is rotatably provided with respect to the central portion 38 about a central axis along a direction perpendicular to or substantially perpendicular to both the third radial direction and the height direction. That is, the central axis of rotation of the extending portion 39 is along the axial direction (circumferential direction) of the center line O3. In the present embodiment, the arm portion 35 is provided with three extension portions 39. Each of the three extending portions 39 is arranged evenly in the circumferential direction when viewed from above in the height direction. In this case, the angle formed by the extending portions 39 arranged adjacent to each other is 120 ° or approximately 120 ° when viewed from one side in the height direction. Further, the third radial dimension of the three extension portions 39 coincides with or substantially coincides with each other.

The arm portion 36 includes a central portion 40 and an extension portion 41. The central portion 40 is provided so as to be movable along the base portion 32 in the height direction. The central portion 40 can move from the lower end portion 31 to the upper end portion 33 in the height direction. In the present embodiment, the central portion 40 can move from the central portion 38 of the arm portion 35 to the upper end portion 33. The central portion 40 is provided so as to be rotatable in the circumferential direction about the central axis along the height direction of the base portion 32. The extending portion 41 extends from the central portion 40 to the outer peripheral side in the third radial direction. One end of the extending portion 41 is connected to the central portion 40. The extending portion 41 is rotatably provided with respect to the central portion 40 about a central axis along a direction perpendicular to or substantially perpendicular to both the third radial direction and the height direction. That is, the central axis of rotation of the extension portion 41 is along the axial direction (circumferential direction) of the center line O3. In the present embodiment, the arm portion 36 is provided with three extension portions 41. Further, similarly to the extension portion 39, each of the three extension portions 41 is evenly arranged in the circumferential direction when viewed from one side in the height direction. The third radial dimensions of the three extension 41 are consistent or substantially identical to each other.

The plate portion 37 is provided on the outer peripheral side with respect to the base portion 32 in the third radial direction. The plate thickness direction of the plate portion 37 coincides with or almost coincides with the third radial direction. The plate portion 37 is connected to the end opposite to the end on the central portion 38 side of the extension portion 39A in the third radial direction. The plate portion 37 is connected to the end opposite to the end on the central portion 40 side of the extension portion 41A in the third radial direction. In the present embodiment, the extension portion 39A and the extension portion 41A are connected to the plate portion 37 at positions displaced from each other in the height direction. When any of the extending

portions

39A and 41A rotates as described above, the plate portion 37 moves. At this time, the plate portion 37 moves along the longitudinal direction of the plate portion 37.

In the present embodiment, the extension portion 39A and the extension portion 41A are connected to each other by the plate portion 37. Therefore, when the central portion 38 moves in the height direction with respect to the base portion 32, the central portion 40 moves in the height direction with respect to the base portion 32. That is, the central portion 38 moves together with the central portion 40 in the height direction with respect to the base portion 32. Further, when the central portion 38 rotates with respect to the base portion 32, the central portion 40 rotates with respect to the base portion 32. That is, the central portion 38 rotates with respect to the base portion 32 together with the central portion 40. Further, when the central portion 38 and the central portion 40 move in the height direction with respect to the base portion 32, the plate portion 37 moves in the height direction with respect to the base portion 32. When the central portion 38 and the central portion 40 rotate with respect to the base portion 32, the plate portion 37 rotates with respect to the base portion 32. That is, the arm portion 35, the arm portion 36, and the plate portion 37 move together with respect to the base portion 32 in the height direction and rotate together in the circumferential direction.

It is preferable that the plate portion 37 is made of the same metal material as the hollow utility pole 1 (hollow pole portion 2). In one example, the plate portion 37 is preferably formed of a metal material having the same or substantially the same linear expansion coefficient (thermal expansion coefficient) as the metal forming the hollow utility pole 1.

Hereinafter, the utility pole reinforcement method according to the present embodiment will be described with reference to FIGS. 4 to 8. Also in FIGS. 4 to 8, the axial direction, the first radial direction, the horizontal direction, and the vertical direction are defined as in FIG. 1. Further, the hollow utility pole 1 stands vertically or substantially vertically with respect to the ground G. The bottom wall 4 is provided below the surface of the ground G in the vertical direction. A part of the peripheral wall 5 is provided below the surface of the ground G in the vertical direction. That is, a part of the bottom wall 4 and the peripheral wall 5 is buried in the ground G as in FIG. 1. Further, a through hole 10 is formed in the vicinity of the ground G.

As shown in FIG. 4, in the utility pole reinforcement method of the present embodiment, the lid member 3 is removed from the hollow pole portion 2 before the utility pole reinforcement member 20 and the utility pole reinforcement mechanism 30 are inserted into the hollow utility pole 1. Since the lid member 3 is removed from the hollow pillar portion 2, the hollow pillar portion 2 opens upward in the vertical direction. In the hollow pillar portion 2, the opening 6 communicates with the internal cavity 7. Therefore, the utility pole reinforcing member 20 and the utility pole reinforcing mechanism 30 can be inserted into the internal cavity 7 of the hollow column portion 2 by passing through the opening 6 from the upper side of the hollow column portion 2 in the vertical direction.

Next, as shown in FIG. 5, the utility pole reinforcing mechanism 30 is inserted into the hollow column portion 2 from above in the vertical direction by using the moving mechanism 50. The moving mechanism 50 includes a wire 51 and a hook 52 connected to the tip of the wire 51. The moving mechanism 50 hooks the hook 52 on the hanging portion 34 of the utility pole reinforcing mechanism 30. The moving mechanism 50 lifts the utility pole reinforcing mechanism 30 upward in the vertical direction by adjusting the length of the wire 51. Then, the utility pole reinforcing mechanism 30 is lifted to the upper side with respect to the hollow pillar portion 2 in the vertical direction. That is, the lower end portion 31 of the utility pole reinforcing mechanism 30 is arranged above the opening 6 of the hollow pillar portion 2 in the vertical direction.

As described above, the utility pole reinforcement mechanism 30 is arranged above the hollow pole portion 2 in the vertical direction. In the utility pole reinforcement mechanism 30, the lower end portion 31, the base portion 32, the upper end portion 33, and the suspension portion 34 are moved to a position where the lower end portion 31, the upper end portion 33, and the suspension portion 34 are not deviated from or almost deviated from the center line O1 of the hollow column portion 2 in the horizontal direction by the moving mechanism 50. Will be done. Further, in the utility pole reinforcing mechanism 30, the plate portion 37 is arranged at a position that is not displaced or is hardly displaced with respect to the position of the through hole 10 in the circumferential direction of the hollow column portion 2. Then, the utility pole reinforcing mechanism 30 is moved in the vertical direction by the moving mechanism 50 while maintaining the position of the plate portion 37 or the like in the circumferential direction. That is, the utility pole reinforcing mechanism 30 is moved along the vertical direction without rotating the plate portion 37 or the like in the circumferential direction. The moving mechanism 50 moves the utility pole reinforcing mechanism 30 downward in the vertical direction by adjusting the length of the wire 51. As a result, the utility pole reinforcement mechanism 30 begins to be inserted into the internal cavity 7 of the hollow pole portion 2 (hollow utility pole 1). If the position of the plate portion 37 or the like deviates from a predetermined position due to the movement of the utility pole reinforcement mechanism 30, the utility pole reinforcement mechanism 30 may be moved while adjusting the position of the plate portion 37 or the like.

When the utility pole reinforcing mechanism 30 is inserted into the internal cavity 7, the plate portion 37 maintains a state of being in contact with the inner surface 8 of the hollow pillar portion 2, as shown in FIG. As described above, the plate portion 37 moves in conjunction with the rotation of either the extension portion 39A of the arm portion 35 or the extension portion 41A of the arm portion 36. In the internal cavity 7, as the utility pole reinforcing mechanism 30 moves downward in the vertical direction, each of the extending

portions

39 and 41 rotates with respect to the base portion 32 so that the acute angle with respect to the base portion 32 increases. That is, each of the extending

portions

39 and 41 moves so as to open from the base portion 32 toward the outer peripheral side in the first radial direction. As the utility pole reinforcing mechanism 30 moves downward in the vertical direction, the plate portion 37 moves in conjunction with the rotation of the

extension portions

39A and 41A. As a result, the acute angle formed by the plate portion 37 and the extending portion 39A and the acute angle formed by the plate portion 37 and the extending portion 41A become large. Further, in a state where the utility pole reinforcing mechanism 30 is moving downward in the vertical direction, each of the central portion 38 of the arm portion 35 and the central portion 40 of the arm portion 36 moves with respect to the base portion 32 in the vertical direction. As described above, when the utility pole reinforcing mechanism 30 is moving downward in the vertical direction due to the movement of the

arm portions

35, 36 and the plate portion 37, the contact state between the plate portion 37 and the inner surface 8 is maintained. Be maintained.

The utility pole reinforcing mechanism 30 further adjusts the length of the wire 51 by the moving mechanism 50 in the vertical direction while maintaining the contact state between the plate portion 37 and the inner surface 8 as described above. Move down. Further, as described above, even if the utility pole reinforcing mechanism 30 moves in the vertical direction, the plate portion 37 maintains a state of matching or almost matching with the position of the through hole 10 in the circumferential direction of the hollow column portion 2. do. Therefore, when the utility pole reinforcing mechanism 30 moves to a predetermined position in the vertical direction, the plate portion 37 closes the through hole 10 from the inner peripheral side in the first radial direction. That is, the opening edge 11 of the through hole 10 is covered with the plate portion 37. As a result, the internal cavity 7 is blocked from the outside of the hollow pillar portion 2.

When the lower end portion 31 of the utility pole reinforcement mechanism 30 comes into contact with the surface 9 of the bottom wall 4 of the hollow column portion 2, the movement mechanism 50 stops the movement of the utility pole reinforcement mechanism 30 downward in the vertical direction. As a result, the utility pole reinforcement mechanism 30 is installed on the bottom wall 4 in the vertical direction. After the utility pole reinforcing mechanism 30 is installed, the hook 52 is removed from the suspension portion 34. After that, the moving mechanism 50 adjusts the length of the wire 51, and the hook 52 is taken out from the internal cavity 7 of the hollow pillar portion 2. As described above, the installation (storage) of the utility pole reinforcement mechanism 30 in the internal cavity 7 is completed.

When the installation of the utility pole reinforcement mechanism 30 in the internal cavity 7 is completed, the internal cavity 7 is partitioned in the circumferential direction by the extending portion 39. Further, the internal cavity 7 is partitioned in the circumferential direction by the extending portion 41. In the present embodiment, the extension portion 39 is arranged below the extension portion 41 in the vertical direction. Further, the extension portion 41 is arranged directly above or substantially directly above the extension portion 39 in the vertical direction. That is, when the internal cavity 7 is viewed from above in the vertical direction, the extending portion 39 and the extending portion 41 overlap or almost overlap (see FIG. 7B). Therefore, the internal cavity 7 is divided into a plurality of sections V formed by the adjacent extension portions 39 and the adjacent extension portions 41 arranged directly above or substantially directly above the adjacent extension portions 39. Will be. In one example, the utility pole reinforcement mechanism 30 comprises three extension 39 and three extension 41. In this case, the internal cavity 7 is divided into three compartments V. Further, in another example, the utility pole reinforcing mechanism 30 includes four extension portions 39 and four extension portions 41. In this case, the internal cavity 7 is divided into four compartments V.

Next, as shown in FIG. 6, the utility pole reinforcing member 20 is inserted into the hollow column portion 2 from above in the vertical direction. The moving mechanism 50 hooks the hook 52 on the hanging portion 23 of the utility pole reinforcing member 20. The moving mechanism 50 lifts the utility pole reinforcing member 20 upward in the vertical direction by adjusting the length of the wire 51. Then, the utility pole reinforcing member 20 is lifted to the upper side with respect to the hollow pillar portion 2 in the vertical direction. That is, the bottom portion 21 of the utility pole reinforcing member 20 is arranged above the opening 6 of the hollow pillar portion 2 in the vertical direction. The moving mechanism 50 moves the utility pole reinforcing member 20 downward in the vertical direction by adjusting the length of the wire 51. As a result, the utility pole reinforcing member 20 begins to be inserted into the internal cavity 7 of the hollow pole portion 2 (hollow utility pole 1).

In the state where the utility pole reinforcing member 20 is inserted into the internal cavity 7, the utility pole reinforcing member 20 is arranged in the section V partitioned by the extension portion 39 and the extension portion 41 of the utility pole reinforcement mechanism 30 (see FIG. 7B). The utility pole reinforcing member 20 is arranged on the outer peripheral side in the first radial direction in the section V. The utility pole reinforcing member 20 has a body portion 22 formed in a tapered shape. Therefore, the utility pole reinforcing member 20 is arranged in the compartment V with almost no distance from the inner surface 8 of the peripheral wall 5 of the hollow column portion 2. In one example, the average taper α of the hollow column portion 2 is the same as or almost the same as the average taper β of the body portion 22 of the utility pole reinforcing member 20. In this case, the surface of the body 22 is in complete or almost complete contact with the inner surface 8 of the peripheral wall 5.

However, when the utility pole reinforcing member 20 is arranged at the portion of the peripheral wall 5 with which the plate portion 37 contacts, the utility pole reinforcing member 20 contacts the plate portion 37 from the side opposite to the peripheral wall 5 in the first radial direction. That is, the plate portion 37 is arranged between the utility pole reinforcing member 20 and the peripheral wall 5 in the first radial direction. The plate portion 37 comes into contact with the peripheral wall 5 as described above. Therefore, the surface of the body portion 22 comes into complete or almost complete contact with the inner peripheral surface of the plate portion 37 in the first radial direction.

When the bottom portion 21 of the utility pole reinforcing member 20 comes into contact with the surface 9 of the bottom wall 4 of the hollow column portion 2, the moving mechanism 50 stops the movement of the utility pole reinforcing member 20 downward in the vertical direction. As a result, the utility pole reinforcing member 20 is installed on the bottom wall 4 in the vertical direction. After the utility pole reinforcing member 20 is installed, the hook 52 is removed from the suspension portion 23. After that, the moving mechanism 50 adjusts the length of the wire 51, and the hook 52 is taken out from the internal cavity 7 of the hollow pillar portion 2. As described above, the installation (storage) of the utility pole reinforcing member 20 in the internal cavity 7 is completed.

The number of utility pole reinforcing members 20 inserted into the internal cavity 7 is determined based on which of the following equations (3) and (4) is satisfied.

D3 <8 × d2 (3)
D3 ≧ 8 × d2 (4)

Here, D3 is the inner diameter of the lower end of the peripheral wall 5 in the first radial direction (see FIG. 1). d2 is the outer diameter of the lower end of the body portion 22 in the second radial direction (see FIG. 2). In the present embodiment, since the tapered shape of the peripheral wall 5 is a linear taper, D3 is the maximum inner diameter in the first radial direction of the peripheral wall 5. Further, as described above, d2 is the maximum outer diameter of the body portion 22 in the second radial direction.

When the hollow column portion 2 and the utility pole reinforcing member 20 satisfy the above formula (3), that is, when D3 is smaller than 8 times d2, three utility pole reinforcing members are arranged in the internal cavity 7. Further, when the hollow column portion 2 and the utility pole reinforcing member 20 satisfy the above formula (4), that is, when D3 is 8 times or more larger than d2, four utility pole reinforcing members are arranged in the internal cavity 7.

The installation of the utility pole reinforcing member 20 described above is repeated the same number of times as the number of utility pole reinforcing members 20. That is, when the three utility pole reinforcing members 20 are installed in the internal cavity 7, the installation of the utility pole reinforcing member 20 described above is repeated three times. Further, when the four utility pole reinforcing members 20 are installed in the internal cavity 7, the installation of the utility pole reinforcing member 20 described above is repeated four times.

FIG. 7A shows a state in which the utility pole reinforcing mechanism 30 and the three utility pole reinforcing members 20 have been installed. In the internal cavity 7 of the hollow pole portion 2 (hollow pole 1), a utility pole reinforcing mechanism 30 and three utility pole reinforcing members 20 are installed on the bottom wall 4. In the utility pole reinforcing mechanism 30, the plate portion 37 is in contact (contact) with the inner surface 8 of the peripheral wall 5 from the inner peripheral side in the first radial direction. As a result, the through hole 10 formed in the peripheral wall 5 is closed, and the communication between the internal cavity 7 and the outside of the hollow pillar portion 2 is blocked. Further, the extension portion 39 and the extension portion 41 partition the internal cavity 7 in the circumferential direction. In the present embodiment, three extension portions 39 and three extension portions 41 are provided in the utility pole reinforcing mechanism 30, and the extension portions 41 are provided in the vertical direction directly above or substantially directly above each of the extension portions 39. Is placed. Therefore, the internal cavity 7 partitioned by the extension portion 39 and the extension portion 41 is divided into three compartments V.

As shown in FIG. 7B, a utility pole reinforcing member 20 is arranged in each of the three compartments V. The utility pole reinforcing member 20 is arranged on the outer peripheral side in the first radial direction in the compartment V (internal cavity 7). That is, the utility pole reinforcing member 20 is arranged in a state where the body portion 22 is in contact with the inner surface 8 of the peripheral wall 5. When the utility pole reinforcing member 20 is arranged at the portion of the peripheral wall 5 with which the plate portion 37 contacts, the plate portion 37 is arranged between the body portion 22 and the inner surface 8 of the peripheral wall 5 in the first radial direction. Will be done. The body portion 22 is arranged in contact with the plate portion 37.

FIG. 8 shows a state in which the filler 60 is supplied to the internal cavity 7 of the hollow utility pole 1 (hollow pole portion 2). After the installation of the utility pole reinforcing mechanism 30 and the three utility pole reinforcing members 20 is completed in the state of FIGS. 7A and 7B, that is, in the present embodiment, the filler 60 is supplied from the upper side in the vertical direction through the opening 6. The filler 60 is supplied to the internal cavity 7 until the surface of the filler 60 is located above the utility pole reinforcing member 20 in the vertical direction. That is, the utility pole reinforcing member 20 is completely or almost completely buried in the filler 60. The filler 60 does not need to be supplied to the internal cavity 7 up to the vicinity of the opening 6 of the hollow column portion 2 in the vertical direction. After the supply of the filler 60 to the internal cavity 7 is completed, the filler 60 is cured. In one example, the surface of the filler 60 is supplied to the internal cavity 7 until it is located about a few meters from the surface of the ground G. As the filler 60, for example, a two-component miscible epoxy resin, a one-component thermosetting resin, an ultraviolet curable resin, or the like is preferable. As described above, the reinforcement of the hollow utility pole 1 by the utility pole reinforcement method of the present embodiment is completed.

As described above, the hollow utility pole 1 whose reinforcement has been completed is a reinforcement utility pole (reinforcement structure) including a utility pole reinforcement member 20, a utility pole reinforcement mechanism 30, and a filler 60. The reinforcing utility pole includes a hollow utility pole portion 2 and a lid member (pole cap) 3 that can be attached to the hollow utility pole portion 2, similarly to the above-mentioned hollow utility pole 1. The reinforcing utility pole is formed in a tapered shape in which the size in the radial direction decreases toward the upper side in the axial direction. Further, the utility pole reinforcing member 20 is formed in a tapered shape in which the size in the radial direction decreases toward the upper side in the axial direction. The utility pole reinforcing member 20 and the utility pole reinforcing mechanism 30 are arranged inside the utility pole. As described above, the utility pole reinforcing mechanism 30 partitions the internal cavity 7 of the utility pole into the compartment V, and closes the through hole 10 formed in the utility pole from the inside of the utility pole. The filler 60 is supplied to the reinforcing utility pole and cured as described above.

In the utility pole reinforcement method of the present embodiment, the utility pole reinforcement mechanism 30 is installed in the internal cavity 7 of the hollow utility pole 1. The extension portion 39 and the extension portion 41 provided in the utility pole reinforcing mechanism 30 partition the inner cavity 7 in the circumferential direction, so that the inner cavity 7 is divided into a plurality of compartments V. That is, the extending

portions

39 and 41 are partition plates for partitioning the internal cavity 7. In the present embodiment, the three extension portions 39 and the three extension portions 41 partition the internal cavity 7 evenly or substantially evenly in the circumferential direction, so that the internal cavity 7 is divided into three sections having the same or substantially the same size. It is partitioned into V. A utility pole reinforcing member 20 is arranged in each of these compartments V by a moving mechanism 50. Therefore, the utility pole reinforcing members 20 are arranged at equal intervals or substantially equal intervals with respect to the circumferential direction of the internal cavity 7. That is, the utility pole reinforcing member 20 is arranged in a well-balanced manner with respect to the circumferential direction of the hollow utility pole 1. Therefore, for example, the occurrence of insufficient reinforcement of the hollow utility pole 1 in a specific direction is suppressed, and the hollow utility pole 1 is appropriately reinforced.

In the utility pole reinforcement method of the present embodiment, the utility pole reinforcing member 20 formed in a tapered shape can be arranged in the vicinity of the inner surface 8 of the peripheral wall 5 of the hollow utility pole 1 formed in a tapered shape. That is, the utility pole reinforcing member 20 is not arranged at a position away from the inner surface 8 in the first radial direction. By arranging the utility pole reinforcing member 20 in the vicinity of the inner surface 8, the utility pole reinforcing member 20 appropriately reinforces the hollow utility pole 1. Further, the filler is supplied to the internal cavity 7 and cured as described above. As a result, the utility pole reinforcing member 20, the utility pole reinforcing mechanism 30, and the hollow pole portion 2 of the hollow utility pole 1 are integrated with the cured filler. Therefore, the hollow utility pole 1 is appropriately reinforced.

In the utility pole reinforcement method of the present embodiment, the

extension portions

39, 41 of the

arm portions

35, 36 move in the height direction, and the

extension portions

39, 41 of the

arm portions

35, 36 rotate as described above. By both moving, the plate portion 37 comes into contact with (contacts) the inner surface 8. The plate portion 37 closes the through hole 10 formed in the peripheral wall 5 from the inner surface 8 side in the first radial direction. That is, the plate portion 37 is a closing plate that closes the through hole 10. In the internal cavity 7, the plate portion 37 closes the through hole 10 (opening edge 11), so that communication with the outside of the hollow utility pole 1 (hollow pole portion 2) is cut off. For example, even if the through hole 10 is a corroded portion formed by corrosion of the hollow utility pole 1, if the corroded portion is closed by the plate portion 37, even if the filler is supplied to the hollow utility pole 1, the filler is inside. No leakage from the cavity 7. Therefore, the hollow utility pole 1 is appropriately reinforced.

In the utility pole reinforcement method as described above, the hollow utility pole 1 is reinforced according to the flowchart shown in FIG. In the hollow utility pole 1, the lid member (pole cap) 3 attached to the hollow pole portion 2 is removed (S1). When the lid member 3 is removed, the hollow pillar portion 2 opens upward in the vertical direction. The utility pole reinforcing mechanism 30 is inserted into the internal cavity 7 of the hollow column portion 2 from above the opening 6 in the vertical direction (S2). The utility pole reinforcing mechanism 30 is arranged at a predetermined position in the internal cavity 7 as described above. As a result, the through hole 10 (corroded portion) formed in the peripheral wall 5 of the hollow pillar portion 2 is closed by the plate portion 37 (S3). After the utility pole reinforcement mechanism 30 is installed, the utility pole reinforcement member 20 is installed at a predetermined position in the section V partitioned by the

extension portions

39 and 41 as described above (S4). After the utility pole reinforcing mechanism 30 and the utility pole reinforcing member 20 are installed at predetermined positions of the utility pole portion 2, the filler is supplied from the opening 6 of the utility pole portion 2 to the internal cavity 7 as described above. S5). After the supply of the filler is completed, the filler in the internal cavity 7 is cured (S5).

Based on the above, the following effects can be obtained in this embodiment.

In the utility pole reinforcement method according to the present embodiment, the utility pole reinforcing member 20 formed in a tapered shape is inserted into the internal cavity 7 of the hollow utility pole 1 formed in a tapered shape. The utility pole reinforcing member 20 is arranged on the outer peripheral side in the first radial direction of the internal cavity 7. As a result, the gap formed between the hollow pillar portion 2 of the hollow utility pole 1 and the utility pole reinforcing member 20 is reduced. Therefore, the hollow utility pole 1 is reinforced with higher strength. Further, since the soundness of the hollow utility pole 1 can be ensured by reinforcement, the rebuilding cost of the hollow utility pole 1 can be reduced.

In the utility pole reinforcement method according to the present embodiment, the utility pole reinforcement mechanism 30 is housed in the internal cavity 7. The utility pole reinforcement mechanism 30 partitions the internal cavity 7 by extending

portions

39 and 41. A utility pole reinforcing member 20 is arranged in the partitioned section V. As a result, the installation location of the utility pole reinforcing member 20 in the internal cavity 7 is limited, so that it is possible to suppress variations in the installation location of the utility pole reinforcing member 20 depending on the operator.

In the utility pole reinforcement method according to the present embodiment, the plate portion 37 of the utility pole reinforcement mechanism 30 closes the through hole 10 formed in the peripheral wall 5 from the inner surface 8 side of the peripheral wall 5. As a result, even if the filler 60 is supplied to the internal cavity 7 of the hollow utility pole 1, the filler 60 does not leak from the through hole 10. Therefore, the hollow utility pole 1 is more reliably reinforced.

In the utility pole reinforcement method according to the present embodiment, the utility pole reinforcement mechanism 30 is inserted into the internal cavity 7 from the upper side in the vertical direction. Further, the utility pole reinforcing member 20 is inserted into the internal cavity 7 from the upper side in the vertical direction. As a result, the utility pole can be reinforced from the outside without excavating the ground or making a hole in the utility pole.

In the utility pole reinforcement method according to the present embodiment, when the above-mentioned formula (3) is satisfied, three utility pole reinforcement members 20 are installed in each of the plurality of compartments V. Further, when the above-mentioned formula (4) is satisfied, the four utility pole reinforcing members 20 are installed in each of the plurality of compartments V. As a result, the hollow utility pole 1 is satisfactorily reinforced.

In the utility pole reinforcement method according to the present embodiment, the filler 60 is supplied to the internal cavity 7, and a plurality of electric current reinforcing members 20 installed in the internal cavity 7 are embedded in the filler 60. Then, the filler 60 supplied to the internal cavity 7 is cured, and the utility pole reinforcing mechanism 30, the plurality of utility pole reinforcing members 20, and the hollow utility pole 1 are integrated. As a result, the hollow utility pole 1 is further reinforced.

In the utility pole reinforcement method according to this embodiment, the hollow utility pole is formed from a steel pipe column. Further, the plate portion 37 (blocking plate) is formed of a material having the same linear expansion coefficient as the linear expansion coefficient of the steel pipe column or the linear expansion coefficient of the filler. The utility pole reinforcing member is formed of a material having the same coefficient of linear expansion as that of the steel pipe column. As a result, it is possible to prevent the expansion of the reinforcing portion integrated with the hollow utility pole 1 and the expansion of the hollow utility pole 1 from being significantly deviated from each other. Therefore, the load on the hollow utility pole 1 is suppressed.

In the utility pole reinforcement method according to the present embodiment, the utility pole reinforcing member 20 is installed in any one of a plurality of compartments V of the hollow utility pole, and has a tapered shape having the same average taper as the average taper of the hollow utility pole 1. Be prepared. Thereby, the utility pole reinforcing member 20 can be arranged on the outer peripheral side in the first radial direction. Then, the utility pole reinforcing member 20 can come into contact with the inner surface 8 of the peripheral wall 5. Therefore, the hollow utility pole 1 can be reinforced with even higher strength.

The present invention is not limited to the above embodiment, and can be variously modified at the implementation stage without departing from the gist thereof. In addition, each embodiment may be carried out in combination as appropriate, in which case the combined effect can be obtained. Further, the above-described embodiment includes various inventions, and various inventions can be extracted by a combination selected from a plurality of disclosed constituent requirements. For example, even if some constituent elements are deleted from all the constituent elements shown in the embodiment, if the problem can be solved and the effect is obtained, the configuration in which the constituent elements are deleted can be extracted as an invention.

1 ... Hollow utility pole,
5 ... Circumferential wall,
6 ... opening,
7 ... Internal cavity,
10 ... Through hole,
20 ... Utility pole reinforcement member,
30 ... Utility pole reinforcement mechanism,
32 ... Base,
37 ... Itabe,
39, 39A, 41, 41A ... Extension part,
60 ... Filler,
V ... Section.

Claims

In a state where the base is extended in the vertical direction in the internal cavity of a hollow utility pole in which a peripheral wall is formed in a tapered shape in which the size in the first radial direction intersecting the vertical direction becomes smaller toward the upper side in the vertical direction. Inserting a utility pole reinforcement mechanism and
By installing the utility pole reinforcement mechanism in the internal cavity in a state where the plurality of partition plates extend from the base to the peripheral wall, the internal cavity is formed in a plurality of axial directions along the vertical direction. Dividing into compartments and
The through hole penetrating the peripheral wall is closed from the inner peripheral side in the first radial direction by the closing plate connected to the side opposite to the base in one of the plurality of partition plates.
A taper-shaped utility pole reinforcing member having a smaller size in the second radial direction that intersects the vertical direction toward the upper side in the vertical direction is installed in each of the plurality of sections.
In each of the plurality of sections, the utility pole reinforcing member is brought into contact with the block plate or the peripheral wall from the inner peripheral side in the first radial direction.
A utility pole reinforcement method.
Inserting the utility pole reinforcing mechanism into the internal cavity means inserting the utility pole reinforcing mechanism into the internal cavity from the upper side in the vertical direction.
To install the utility pole reinforcing member in each of the plurality of compartments, the utility pole reinforcing member is inserted into the internal cavity from the upper side in the vertical direction, and the utility pole reinforcing member is provided in each of the plurality of compartments. Is to install,
The utility pole reinforcement method according to claim 1.
Dividing the internal cavity into the plurality of compartments means that the plurality of partition plates divide the internal cavity into the plurality of compartments having the same size with respect to each other in the axial direction.
The utility pole reinforcement method according to claim 1 or 2.
Installing the utility pole reinforcement member in each of the plurality of sections is
When the hollow utility pole and the utility pole reinforcing member satisfy D3 <8 × d2, the three utility pole reinforcing members are installed in each of the plurality of the sections, or
When the hollow utility pole and the utility pole reinforcing member satisfy D3 ≧ 8 × d2, the four utility pole reinforcing members are installed in each of the plurality of the sections.
The utility pole reinforcement method according to any one of claims 1 to 3.
Here, D3 represents the maximum inner diameter of the inner diameter of the hollow utility pole in the first radial direction. d2 represents the maximum outer diameter of the outer diameter of the utility pole reinforcing member in the second radial direction.
By supplying a filler to the internal cavity, the plurality of utility pole reinforcing members installed in the internal cavity are embedded in the filler.
By curing the filler supplied to the internal cavity, the utility pole reinforcing mechanism, a plurality of the utility pole reinforcing members, and the hollow utility pole are integrated.
The utility pole reinforcement method according to any one of claims 1 to 4, further comprising.
The hollow utility pole is formed of a steel pipe pole and is formed from a steel pipe pole.
The block plate is formed of a material having the same coefficient of linear expansion as the coefficient of linear expansion of the steel pipe column or the coefficient of linear expansion of the filler.
The utility pole reinforcing member is formed of a material having the same coefficient of linear expansion as that of the steel pipe column.
The utility pole reinforcement method according to claim 5.
In the utility pole reinforcement method according to any one of claims 1 to 6,
It is installed in any one of the plurality of sections of the hollow utility pole and has a tapered shape having the same second average taper as the first average taper of the hollow utility pole.
Utility pole reinforcement member.
Both the first average taper and the second average taper are 1/75 or 1/110.
The utility pole reinforcing member according to claim 7.