JP5117981B2 - Reinforcing body for hollow column and method for reinforcing hollow column using the reinforcing body - Google Patents

Description

  The present invention uses a reinforcing member for a hollow column for reinforcing a hollow column such as a concrete electric pole or a steel pipe column that is embedded in the ground with a predetermined lower portion embedded in the ground, and the reinforcing member. More specifically, the hollow column is reinforced at the boundary between the underground portion embedded in the ground of the hollow column and the ground portion erected on the ground, and the hollow column above the ground. The present invention also relates to a hollow column reinforcing body that reinforces the whole and a hollow column reinforcing method using the reinforcing body.

  Concrete utility poles are usually erected on the ground with a predetermined length of the lower part of the utility pole buried in the ground. Such a power pole is a cylindrical hollow pole whose outer peripheral part is made of reinforcing bars and concrete, and the inside is hollow, that is, hollow.

  In such a hollow column, the lower part is buried in the ground, so it is strong, but at the border between the ground part and the lower part extending upward from this lower part, that is, in the ground of the hollow column The border between the buried underground part and the ground part standing on the ground is particularly weak compared to other parts. Moreover, since a hollow column is not only a ground part but is hollow overall, the part above a ground is also weak.

Therefore, as shown in Patent Document 1, there is a structure in which an aramid rod is used as a reinforcing rod-shaped member not only on the ground portion of the hollow column but also on the portion above the ground surface.
JP 2007-77613 A

  As described above, not only the ground portion of the hollow column but also the portion above the ground is reinforced using the aramid rod as a reinforcing rod-shaped member, but the aramid rod is relatively expensive. Therefore, it is desired to reinforce the ground using an inexpensive PC steel wire other than an aramid rod. However, since the PC steel wire is weaker than the aramid rod, it is not sufficient to simply change the aramid rod to the PC steel wire, and it is necessary to increase the number of PC steel wires, but increase the number. It becomes difficult to insert the PC steel wire into the hollow column.

  The present invention has been made in view of the above, and an object of the present invention is to provide a hollow column reinforcing body that reinforces the surface of the hollow column with a relatively inexpensive and simple method, and a hollow body using the reinforcing body. It is to provide a method for reinforcing a pillar.

In order to achieve the above object, the hollow column reinforcing body according to claim 1 is a hollow column in which a predetermined length portion of the lower portion is embedded in the ground and is embedded in the ground of a hollow column standing on the ground. A plurality of first reinforcing rod-shaped members arranged in parallel with each other along the longitudinal direction of the hollow column with the center of the boundary between the ground portion and the ground portion standing on the ground, and a central axis of the hollow column The lower end is equiangular in the circumferential direction of the hollow column with respect to the first guide rod set to the center axis of the hollow column to be fixed and the fixed portion fixedly attached near the lower end of the first guide rod. And a plurality of lower arm portions connected to be swingable in the vertical direction around the lower end, and lower ends are attached to the upper ends of the lower arm portions so as to be swingable in the vertical direction around the lower end. Each of the plurality of lower parts with respect to the movable part attached to the first guide bar so as to be movable up and down A plurality of upper arm portions that are mounted at equal intervals in the circumferential direction of the hollow column and swingable in the vertical direction around the upper end corresponding to the portion, and are movable up and down relative to the first guide rod As the attached movable part descends along the first guide rod, the connecting parts of the lower ends of the upper arms and the upper ends of the lower arms are bent toward the inner peripheral surface of the hollow column, A first guide rod fixing jig for setting the center axis of the hollow column near the lower end of the first guide rod by the connection portion coming into contact with the inner peripheral surface of the hollow column, and the first guide rod serving as the center hole The plurality of first reinforcing rod-shaped members are inserted so that the plurality of first reinforcing rod-shaped members are equally arranged at equal angles in the circumferential direction of the hollow column with the first guide rod as the center. a plurality of first justification jig having a first holding portion plural held are either thick of hollow column bottom Inclined along the longitudinal direction of the hollow column so as to be substantially parallel to the inclination of the inner peripheral surface that changes obliquely according to the change in the inner diameter narrowed toward the narrow upper end, and above the plurality of first reinforcing rod-shaped members. A plurality of second reinforcing rod-shaped members arranged, a second guide rod whose lower end is connected to the upper end of the first guide rod, and whose upper end extends above the hollow column, and the second The second guide rods are inserted into the center hole, and the second guide rods are arranged at equal angles around the second guide rod at equal angles in the circumferential direction of the hollow column. A plurality of second equal placement jigs each having a plurality of second holding portions through which the reinforcing rod-shaped members are inserted and held, each of the plurality of second equal placement jigs The position of the second holding portion from the center hole is large in the inner diameter of the hollow column at the position where each second equal placement jig is disposed. The gist of the present invention is to have a plurality of second uniform arrangement jigs corresponding to the size.

The hollow column reinforcing body according to claim 1, wherein a plurality of first reinforcing rod-shaped members are arranged in parallel to each other in the longitudinal direction centering on the ground of the hollow column, and a first guide rod fixing jig is provided. The first guide rod set at the center axis of the hollow column is inserted through the center holes of the plurality of first equal placement jigs, and the plurality of first holding portions of the first equal placement jig are inserted into the plurality of first holding portions. Since the first reinforcing rod-shaped members are inserted and held, and the plurality of first reinforcing rod-shaped members are arranged at equal angles in the circumferential direction of the hollow column, the ground portion of the hollow column is Further, it is reinforced strongly by a plurality of first reinforcing rod-like members arranged evenly in the circumferential direction of the hollow column. A plurality of second reinforcing rod-shaped members are disposed above the plurality of first reinforcing rod-shaped members so as to incline along the longitudinal direction of the hollow column according to the change in the inner diameter of the hollow column. The two reinforcing rod-shaped members are inserted and held in the second holding portions of the plurality of second equally arranged jigs, and the plurality of second reinforcing rod-shaped members are evenly equiangularly in the circumferential direction of the hollow column. Therefore, in addition to the ground portion of the hollow column, the upper portion of the hollow column is also strongly reinforced by a plurality of second reinforcing rod-shaped members that are equally disposed in the circumferential direction of the hollow column.

  The reinforcing body for a hollow column according to claim 2, wherein the hollow hole is formed at an equal angle from a central portion in which a central hole through which the upper end of the first guide rod is inserted is formed in the middle and disposed at the center of the hollow column. The plurality of arms having the same length extending toward the inner peripheral surface of the hollow member are extended toward the inner peripheral surface of the hollow column by the extension biasing means from the state where the arms are retracted by the contraction biasing means. The gist of the present invention is to further include a second guide rod fixing jig that sets the vicinity of the upper end of the first guide rod as the central axis of the hollow column by abutting the tip of the arm portion with the inner peripheral surface of the hollow column. .

  In the reinforcing member for hollow columns according to claim 2, the upper end of the first guide rod is set near the upper end of the first guide rod by the second guide rod fixing jig as the center axis of the hollow column. Are not displaced from the central axis of the hollow column, and the plurality of first reinforcing rod-shaped members are evenly arranged in the circumferential direction of the hollow column, and can firmly reinforce the hollow column.

  The hollow column reinforcing body according to claim 3, wherein the plurality of first reinforcing rod-shaped members include a plurality of aramid rods and a plurality of PC steel wires, and the plurality of aramid rods and a plurality of PC steels. The gist is that the wires are arranged in a predetermined arrangement in the circumferential direction of the hollow column.

  In the reinforcing body for a hollow column according to claim 3, since a plurality of aramid rods and a plurality of PC steel wires are arranged in a predetermined arrangement in the circumferential direction of the hollow column as a plurality of reinforcing rod-shaped members. It is possible to reliably perform strong reinforcement utilizing the characteristics of

  5. The reinforcing body for hollow columns according to claim 4, wherein the outer periphery of the plurality of first reinforcing rod-shaped members arranged at an equal angle in the circumferential direction of the hollow column by the plurality of first equalizing jigs is a wire. The gist is that a plurality of places are bound and fixed.

  In the reinforcing body for a hollow column according to claim 4, since the outer periphery of the plurality of first reinforcing rod-shaped members is fixed with a plurality of points bound by a wire, the plurality of first reinforcing rod-shaped members are separated. Therefore, the ground of the hollow column is firmly reinforced by the plurality of first reinforcing rod-shaped members.

The hollow column reinforcing body according to claim 5 , wherein the hollow column extends to the vicinity of the connecting portion of the first guide rod fixing jig in which the lower end of the first guide rod is set to the central axis of the hollow column. The essence is that the mortar is filled between the plurality of first and second reinforcing rod-shaped members arranged at an equal angle in the circumferential direction of the hollow column and then reinforced as a whole after throwing crushed stone into the bottom of To do.

In the reinforcing body for a hollow column according to claim 5 , the crushed stone is thrown into the bottom of the hollow column up to the connection portion of the first guide rod fixing jig, and then is disposed at an equal angle in the circumferential direction of the hollow column. Since the mortar is filled between the plurality of first and second reinforcing rod-shaped members to reinforce the whole, the hollow column is further reinforced.

The hollow column reinforcing method according to claim 6 is a hollow column reinforcing method using the hollow column reinforcing body according to any one of claims 1 to 5, and is a side portion of a predetermined length above the ground side of the hollow column. A side opening forming step of forming an elongated side opening in the longitudinal direction of the hollow column, and the lower end of the first guide rod fixing jig near the lower end of the first guide rod. Is attached to the first guide rod so as to be movable up and down, and the first guide rod fixing jig is stretched thinly over the first guide rod so that the first guide rod is attached to the first guide rod. A first guide rod inserting step of inserting the rod into the hollow column from the side opening with the lower end of the rod facing down, and the upper end of the first guide rod inserted into the hollow column being substantially directly beside the side opening The plurality of first equal placement jigs are sequentially inserted into the hollow columns from the side openings, A first uniform placement jig insertion step of inserting a first guide rod from the upper end into the center hole of one uniform placement jig, and a plurality of first reinforcing rod-shaped members sequentially from the side openings into the hollow columns The plurality of first reinforcing rod-shaped members are sequentially inserted into the first holding portions of the plurality of first evenly arranged jigs through which the first guide rods are inserted, and the lowest first A first reinforcing bar-shaped member insertion step of fixing one uniform arrangement jig near the lower ends of the plurality of first reinforcing bar-shaped members, and a first equality jig fixed to the plurality of first reinforcing bar-shaped members. A first equal arrangement jig in which the first guide bar is fixed to the plurality of first reinforcing bar-like members while holding the first equal arrangement jig other than the arrangement jig almost directly beside the side opening. The inside of the hollow column is lowered by a predetermined length together with the tool and the plurality of first reinforcing rod-shaped members, and the side portion is opened at this position. The first equal placement jig for fixing the lowermost first equal arrangement jig among the other first equal arrangement jigs held substantially directly to the plurality of first reinforcing rod-shaped members. A tool fixing step and a first uniform arrangement jig fixing repeating step of repeatedly executing the first equal arrangement jig fixing step on all of the plurality of first equal arrangement jigs. And

In the method for reinforcing a hollow column according to claim 6, a first guide rod fixing jig is attached near the lower end of the first guide rod and inserted into the hollow column, and a plurality of first equal arrangement jigs are provided. The first guide rod is inserted into the center hole from the upper end while sequentially inserting into the hollow column, and the plurality of first equalizing jigs are inserted into the hollow column while sequentially inserting the first reinforcing rod-shaped members. After sequentially passing through the first holding portion, fixing the lowermost first uniform arrangement jig near the lower end of the first reinforcing rod-shaped member, and lowering the first guide rod by a predetermined length The hollow column is reinforced by repeatedly performing fixing the lowermost first uniform arrangement jig to the plurality of first reinforcing rod-shaped members for all of the plurality of first equal arrangement jigs. In order to reinforce with the body, the ground portion of the hollow column is strengthened by a plurality of first reinforcing rod-like members arranged evenly in the circumferential direction of the hollow column. It is reinforced.

  According to the present invention, a plurality of first reinforcing rod-shaped members are arranged in parallel to each other in the longitudinal direction around the center of the hollow column, and the first guide rod fixing jig is used as the central axis of the hollow column. The set first guide bar is inserted through the center hole of the first uniform arrangement jig, and the plurality of first reinforcing bar members are inserted into the plurality of first holding portions of the first uniform arrangement jig. Since the plurality of first reinforcing rod-like members are equally disposed at equal angles in the circumferential direction of the hollow column, the ground portion of the hollow column is evenly distributed in the circumferential direction of the hollow column. The plurality of first reinforcing rod-shaped members arranged are firmly reinforced by a relatively inexpensive construction method.

  Further, according to the present invention, the plurality of second reinforcing rod-shaped members are disposed above the plurality of first reinforcing rod-shaped members so as to incline along the longitudinal direction of the hollow column according to the change in the inner diameter of the hollow column. The plurality of second reinforcing rod-shaped members are inserted and held in the second holding portions of the plurality of second equal placement jigs, and the plurality of second reinforcing rod-shaped members are arranged in the circumferential direction of the hollow column. In addition to the ground portion of the hollow column, the upper portion of the hollow column is also provided by a plurality of second reinforcing rod-shaped members disposed evenly in the circumferential direction of the hollow column. Strongly reinforced.

  Further, according to the present invention, after throwing crushed stone into the bottom of the hollow column to the vicinity of the connecting portion of the first guide rod fixing jig, the plurality of firsts arranged at equal angles in the circumferential direction of the hollow column. Since the mortar is filled between the second reinforcing rod-shaped members and the entire reinforcing member is reinforced, the hollow column is further reinforced by a relatively inexpensive construction method.

  Hereinafter, the best mode for carrying out the present invention (hereinafter referred to as an embodiment) will be described with reference to the drawings.

  FIG. 1 is a diagram showing an internal structure of a concrete electric pole that is a hollow pillar reinforced with a hollow pole reinforcing body according to an embodiment of the present invention. The utility pole 1 shown in the figure has a total length of about 16 meters, for example, and a lower portion 1b of about 2.6 meters from the lowermost end 1a is buried in the ground 10 and is erected, and the remaining 13.4 on the ground. Although a portion of about a meter appears, the outer peripheral portion is a cylindrical shape formed of reinforcing bars and concrete, and the inside is hollow, that is, hollow.

  In the utility pole 1, a side opening 1c having a width of about 6 cm and a length of about 40 cm, for example, is formed along the longitudinal direction of the utility pole 1 on the side surface approximately 2 meters above the ground, and the utility pole is formed from the side opening 1c. A reinforcing bar-like member for reinforcing 1 is inserted.

  The utility pole 1 is 2 meters above the ground from the lower part 1b in order to reinforce the border between the lower part 1b of the underground part buried in the ground 10 and the ground part standing on the ground. A plurality of first reinforcing rod-shaped members made up of a plurality of aramid rods 3a and a plurality of PC steel wires 3b are arranged to the extent to reinforce the ground of the electric pole 1, and the plurality of aramid rods 3a And a plurality of aramid rods 53 which are a plurality of second reinforcing rod-shaped members are disposed above the plurality of first reinforcing rod-shaped members made of a plurality of PC steel wires 3b so as to reinforce the upper portion of the utility pole 1. Has been. In the present embodiment, six and twelve aramid rods 3a and PC steel wires 3b are provided, respectively, and six aramid rods 53 are provided.

  Eighteen first reinforcing rod-shaped members composed of six aramid rods 3a and twelve PC steel wires 3b are arranged at equal angles in the circumferential direction of the utility pole 1 and in parallel with each other. In the center, one first guide bar 5 for determining the central axis of the utility pole 1 is disposed, and this first guide bar 5 is located near the side opening 1c from the lowest end 1d of the utility pole 1. It extends to. In addition, by arranging 18 first reinforcing rod-shaped members composed of 6 aramid rods 3a and 12 PC steel wires 3b in parallel with each other, these first reinforcing rod-shaped members are arranged. Can be easily disposed in the utility pole 1, and by increasing the number of PC steel wires, the number of expensive aramid rods can be reduced and the economy can be improved.

  Eighteen first reinforcing rod-shaped members composed of six aramid rods 3a and twelve PC steel wires 3b and the first guide rods 5 are shown in FIG. Inserted into a plurality (9 in the present embodiment) of first equal placement jigs 7 made of, for example, plastic or the like provided in the utility pole 1 around the ground portion, thereby centering the first guide rod 5 Thus, 18 first reinforcing rod-shaped members composed of 6 aramid rods 3a and 12 PC steel wires 3b are equally arranged in the circumferential direction of the utility pole 1 at an equal angle.

  As shown in FIG. 3, each of the first uniform arrangement jigs 7 is formed with a central hole 7a through which the first guide rod 5 is inserted in the center, and is connected radially extending from the central hole 7a. Eighteen ring-shaped holding portions 7b are formed at the tip of the portion to hold 18 first reinforcing rod-like members inserted therethrough.

  In addition, a screw hole 7g is formed at the outer center of each ring-shaped holding portion 7b. The screw hole 7g is formed with respect to the aramid rod 3a and the PC steel wire 3b inserted into the ring-shaped holding portion 7b. A small screw is screwed into each screw hole 7g, and the tip of the small screw is brought into contact with the aramid rod 3a or the PC steel wire 3b and tightened firmly, whereby the aramid rod 3a and the PC steel wire 3b are attached to the ring-shaped holding portion 7b. It is for fixing.

  The 18 ring-shaped holding portions 7b of each uniform arrangement jig 7 are equally arranged at an equal angle in the circumferential direction of the utility pole 1, but six pieces of the 18 ring-shaped holding portions 7b are arranged with respect to the 18 ring-shaped holding portions 7b. In order to insert the aramid rod 3a and the twelve PC steel wires 3b evenly in the circumferential direction of the utility pole 1, one aramid rod 3a is provided for every two PC steel wires 3b. That is, when one aramid rod 3a is inserted into the ring-shaped holding portion 7b, two PC steel wires 3b are inserted into the two adjacent ring-shaped holding portions 7b, and the two PC steel wires 3b are inserted. Next, a single aramid rod 3a is inserted so that the aramid rod 3a and the PC steel wire 3b are inserted evenly so as not to be biased to the ring-shaped holding portion 7b.

  As shown in FIGS. 1 and 2, the first guide bar 5 is inserted into the utility pole 1 with a first guide bar fixing jig 9 attached to the lower end thereof. The first guide rod fixing jig 9 is for fixing the first guide rod 5 to the central axis of the utility pole 1, and the first guide rod fixing jig 9 is The first guide rod 5 is fixed to the central axis of the utility pole 1 at the bottom of the utility pole 1 by being inserted into the utility pole 1 after being attached to the lower end portion of the first guide pole 5.

  Further, as shown in FIGS. 4 and 5, the first guide rod fixing jig 9 includes a plurality of sets, a plurality of sets provided radially with respect to the first guide rod 5 and evenly in the circumferential direction of the utility pole 1. In the embodiment, there are three sets of upper arm part 43a and lower arm part 43b.

  In the first guide bar fixing jig 9, the lower end portion of the upper arm portion 43a and the upper end portion of the lower arm portion 43b of each set are coupled so as to be swingable in the vertical direction. Further, the lower end portion of the lower arm portion 43b of each group is inserted into the first guide rod 5 and protruded from the upper portion of the fixed connection portion 45 fixed to the first guide rod 5 with a screw or the like. Is swingably attached. Further, the first guide rod fixing jig 9 has a lower side portion of a movable connecting portion 49 in which the upper end portions of the upper arm portions 43a of each set are movably attached to the first guide rod 5 in the vertical direction. Is attached to the protruding portion 49a protruding so as to be swingable in the vertical direction.

  When the upper end portion of the upper arm portion 43a of each pair moves upward along the first guide rod 5 together with the movable connecting portion 49, the first guide rod fixing jig 9 moves to the upper arm portion 43a of each pair. As shown in FIG. 5, the lower arm 43 b extends straight and closes, and is folded into an elongated shape so as to snuggle up to the first guide bar 5. Conversely, when the upper end portion of the upper arm portion 43a of each pair moves downward along the first guide bar 5 together with the movable connecting portion 49, the lower end portion and the lower arm portion 43b of the upper arm portion 43a of each pair. As shown in FIG. 4, the connecting portion 51 at the upper end of the bent portion extends toward the inner wall of the utility pole 1, and the first guide when each set of connecting portions 51 comes into contact with the inner wall of the utility pole 1. The rod 5 is disposed so as to coincide with the central axis of the utility pole 1.

  As can be clearly understood from FIG. 2, a second guide rod fixing jig 11 is attached to the upper end of the first guide rod 5, so that the upper end of the first guide rod 5 is made the central axis of the utility pole 1. It is set to be fixed.

  As shown in FIG. 6, the second guide rod fixing jig 11 has a central hole 201 a through which the first guide rod 5 is inserted and is formed in the middle of the central portion 201 b, and is disposed at the center of the utility pole 1. A central member 201.

  The central member 201 has a plurality of (three in this embodiment) arm portions 203 that extend from the central member 201 toward the inner peripheral surface of the utility pole 1 at an equal angle and abut against the inner peripheral surface. Each of these arm portions 203 includes a fork portion 203b whose base portion is detachably attached to the central portion 201b and whose tip portion branches into two in a fork shape toward the inner peripheral surface of the utility pole 1, and this fork portion 203b Detachable arm portion 213a having a long and narrow elongated hole 203e formed at the center of the detachable arm portion, and a retractable arm portion 203c held between the fork portion 203b of the detachable arm portion 213a so as to be stretchable. And have.

  The extendable arm portion 203c is formed by overlapping two members having the same shape, and an elongated hole 203d that is elongated in the longitudinal direction is formed at the center of the two overlapped members. Then, two screws 205a and 205b are attached from the elongated hole 203e of the fork portion 203b of the detachable arm portion 213a through the elongated hole 3d of the extendable arm portion 203c, and the two screws 205a and 205b are attached to the base shaft. Further, the extendable arm portion 203c is held so as to be extendable and retractable along the long hole 203d and the long hole 203e in the direction toward the inner peripheral surface of the utility pole 1.

  Further, another screw 205c is fixedly attached to a portion near the base of the detachable arm 213a, and between one screw 205a of the two screws 205a and 205b and another screw 205c. Is attached with a wire compression spring 207, and the extendable force of the wire compression spring 207 biases the extendable arm 203 c toward the inner peripheral surface of the utility pole 1. As a result, the extendable arm portion 203c extends long along the elongated holes 203d and 3e toward the inner peripheral surface of the utility pole 1, and the tip thereof comes into contact with the inner peripheral surface of the utility pole 1.

  Furthermore, on each of the extendable arm portions 203c formed by overlapping two members having the same shape, a hook portion 203f is formed so as to protrude. In these hook portions 203f, The rubber band is hooked in an extended state so as to make a loop around all these hooks 203f, and the retractable force of the rubber band causes each of the extendable arm parts 203c to resist the extension force of the wire compression spring 7. The retractable arm portion 203c is retracted to the innermost part of the fork portion 3b of the detachable arm portion 213a.

  When the second guide rod fixing jig 11 is inserted into the utility pole 1 in a state where the extendable arm portion 203c is retracted to the innermost portion of the fork portion 203b, that is, in a contracted state, The tip of the extendable arm portion 203 c does not contact the inner peripheral surface of the utility pole 1.

  Further, the outer circumferences of the plurality of first reinforcing rod-shaped members composed of the aramid rod 3a and the PC steel wire 3b arranged at an equal angle in the circumferential direction of the utility pole 1 by the plurality of first equal placement jigs 7 are shown in FIG. As shown in FIG. 2, a plurality of points are bound and fixed by the wire 31, so that the plurality of first reinforcing rod-shaped members are not separated.

  Next, a plurality of first reinforcing rod-shaped members composed of a plurality of aramid rods 3a and a plurality of PC steel wires 3b configured as described above, a first guide rod 5, and a first guide rod fixing jig 9. A reinforcing method for reinforcing the ground of the utility pole 1 using the second guide rod fixing jig 11 will be described.

  First, when the side opening is not formed in the side part of a predetermined length above the ground of the utility pole 1, the side opening 1c elongated in the longitudinal direction of the utility pole 1 is formed in this part.

  Then, the first guide rod fixing jig 9 is attached near the lower end of the first guide rod 5. The first guide rod fixing jig 9 is attached by first inserting the lower end of the first guide rod 5 into the movable connecting portion 49 at the upper end of the first guide rod fixing jig 9 and then the first guide rod fixing jig 9. After inserting the lower end of the first guide bar 5 into the fixed connection part 45 at the lower end of the guide rod fixing jig 9, the fixed connection part 45 is fixed to the lower end of the first guide bar 5 with a screw or the like. .

  After the first guide rod fixing jig 9 is attached to the lower end of the first guide rod 5 in this way, the connecting portion 51 of the first guide rod fixing jig 9 is entirely formed as shown in FIG. The first guide rod 5 is inserted into the utility pole 1 through the side opening 1c with the lower end of the first guide rod 5 facing downward in a state where the first guide rod 5 is stretched thinly.

  In this way, the upper end of the first guide bar 5 inserted into the utility pole 1 together with the first guide bar fixing jig 9 is set so as to be almost directly beside the side opening 1c, and from the side opening 1c. The first guide bar 5 is sequentially inserted from the upper end into the center hole 7a of the first equal arrangement jig 7 while the plurality of first equal arrangement jigs 7 are sequentially inserted into the utility pole 1.

  Next, 18 first reinforcing rod-shaped members composed of the aramid rod 3a and the PC steel wire 3b are sequentially inserted into the utility pole 1 from the side opening 1c, and the plurality of first reinforcing rod-shaped members are firstly connected. A plurality of first equal placement jigs 7 through which the guide rods 5 are inserted are sequentially inserted into the first holding portions 7a, and the lowermost first equal arrangement jig 7 is inserted into the screw hole 7g. It fixes to the lower end side of a some 1st reinforcement rod-shaped member with a screw | thread.

  Then, the first uniform placement jig 7 other than the first uniform placement jig 7 fixed to the plurality of first reinforcing rod-shaped members made of the aramid rod 3a and the PC steel wire 3b is connected to the side opening 1c. The first guide bar 5 is held in the electric pole 1 together with the first equalizing jig 7 and the plurality of first reinforcing rod-shaped members fixed to the plurality of first reinforcing rod-shaped members. A predetermined length is lowered, and the lowermost first uniform placement jig 7 among the other first uniform placement jigs 7 held substantially directly beside the side opening 1c at this position is moved to a plurality of first It is fixed to the reinforcing bar-shaped member 1 with a screw hole 7g and a small screw. The step of fixing the first evenly arranged jig 7 to the first reinforcing bar-like member is repeatedly performed on all of the plurality of first equally arranged jigs 7.

  Next, after all of the plurality of first equal placement jigs 7 are fixed to the plurality of reinforcing rod-shaped members, the upper end of the first guide rod 5 is set almost directly beside the side opening 1c, and the second The second guide rod fixing jig in a state in which the extendable arm portion 203c of the guide rod fixing jig 11 is retracted to the innermost portion of the fork portion 203b by a compression biasing means such as a rubber band. 11 is inserted into the utility pole 1 from the side opening 1c.

  Next, the upper end of the first guide bar 5 is inserted into the center hole 201a of the second guide bar fixing jig 11 inserted into the electric pole 1, and then the second guide bar fixing jig 11 A rubber band, which is a depressurizing means for expanding and contracting the extendable arm portion 203c, is cut with scissors or the like. When the rubber band is cut, the extendable arm portion 203c of the second guide rod fixing jig 11 is extended toward the inner peripheral surface of the electric pole 1 by the extension force of the wire compression spring 207, and the tip thereof is the electric pole. When abutting against the inner peripheral surface of the first guide rod 5, the upper end of the first guide rod 5 is fixed to the central axis of the utility pole 1.

  As described above, the underground portion of the utility pole 1 is composed of 18 first reinforcing rod-shaped members composed of the aramid rod 3a and the PC steel wire 3b, the first guide rod fixing jig 9, and the nine first members. In order to further strengthen the reinforcement, the first guide rod fixing jig is reinforced by the reinforcing structure comprising the uniform arrangement jig 7 and the second guide rod fixing jig 11. 9 After throwing the crushed stone 21 into the bottom of the utility pole 1 up to the connection part 51 connecting the upper arm part 43a and the lower arm part 43b, an aramid rod 3a and a PC steel wire arranged at an equal angle in the circumferential direction of the utility pole 1 Mortar is put between 18 first reinforcing rod-shaped members made of 3b and filled to reinforce the whole. The crushed stone 21 and the mortar are charged into a second portion composed of six aramid rods 53 above a plurality of first reinforcing rod-shaped members composed of the aramid rod 3a and the PC steel wire 3b described below. Alternatively, a plurality of reinforcing rod-shaped members may be provided to reinforce the upper portion of the utility pole 1.

  Next, a plurality of second reinforcing rod members made up of six aramid rods 53 are arranged above a plurality of first reinforcing rod members made up of six aramid rods 3a and twelve PC steel wires 3b. A structure and method for reinforcing the upper portion of the utility pole 1 will be described.

  The structure for reinforcing the upper portion of the utility pole 1 is reinforced by a plurality of first reinforcing rod-shaped members made up of the above-described six aramid rods 3a and twelve PC steel wires 3b above the side openings 1c of the utility pole 1. The upper part of the utility pole 1 is reinforced above the ground part, and six aramid rods 53, which are a plurality of second reinforcing rod-shaped members, are used.

  The utility pole 1 is tapered so that the upper end is thin and the lower end is thick, and the inner diameter of the utility pole 1 is similarly tapered so that the upper end is narrow and the lower end is thick. Since the inner peripheral surface is also inclined, the six aramid rods 53, which are a plurality of second reinforcing rod-shaped members, are arranged in parallel with the inclination of the inner peripheral surface due to the change in the inner diameter of the electric pole 1. Inclined in the longitudinal direction and disposed above the plurality of first reinforcing bar members.

  The six aramid rods 53, which are the plurality of second reinforcing rod-shaped members, extend to a position where the lower ends slightly overlap the upper ends of the PC steel wires 3b of the plurality of first reinforcing rod-shaped members. Also, the upper end extends slightly below the top opening 1 a of the utility pole 1.

  A second guide bar 55 is disposed at the center of the six aramid rods 53 disposed in this manner. The lower end of the second guide bar 55 is connected to the upper end of the first guide bar 5, and the upper end extends slightly below the top opening 1 a of the utility pole 1 like the six aramid rods 53. .

  Further, a plurality of second guide rods 55 and six aramid rods 53 are provided at a predetermined interval in the longitudinal direction of the utility pole 1, and in this embodiment, six second equal arrangement jigs 57a and 57b. , 57c, 57d, 57e, and 57f.

  As shown in FIGS. 7A to 7F, the six second uniform placement jigs 57a to 57f have the size, that is, the diameter of each of the second uniform placement jigs 57a to 57f. It is formed so as to correspond to the size of the inner diameter of the utility pole 1 at the position where it is disposed.

  Each of the six second equal arrangement jigs 57a to 57f has a center hole 61 through which the second guide rod 55 is inserted at the center, and the six aramid rods 53 around the center hole 61. Are provided with six second holding portions 63 through which six aramid rods 53 are inserted and held so as to be evenly arranged at equal angles in the circumferential direction of the utility pole 1.

  As described above, the six aramid rods 53 disposed in the utility pole 1 to reinforce the upper portion of the utility pole 1 are inserted into the center hole 61 through the second guide rod 55 and are located at predetermined positions in the utility pole 1. Are inserted through the second holding portions 63 of the six second equal arrangement jigs 57a-57f arranged at the same angle, so that they are evenly arranged at an equal angle in the circumferential direction of the utility pole 1, and The upper part can be evenly reinforced without shifting.

  Next, as described above, a method of reinforcing the upper portion of the utility pole 1 by arranging a plurality of second reinforcing rod-shaped members composed of six aramid rods 53 will be described.

  First, six aramid rods 53 as a plurality of second reinforcing rod-shaped members are sequentially inserted into the electric pole 1 from the top opening 1a or the side opening 1c of the electric pole 1, and the six aramid rods 53 are inserted into the electric pole. 1 is hung from the top opening 1a with a string or the like, and the lower ends of the six aramid rods 53 are set so as to be located almost directly beside the side opening 1c.

  Then, the second uniform placement jig 57a located at the top of the six second uniform placement jigs 57a-57f is inserted from the side opening 1c of the utility pole 1 and the six aramid rods 53 are inserted. The lower ends of the six aramid rods 53 are sequentially inserted into the plurality of second holding portions 63 of the second uniform arrangement jig 57a positioned on the uppermost side.

  Next, the second guide rod 55 is inserted into the utility pole 1 from the side opening 1c, and the lower end of the six aramid rods 53 is inserted into the holding portion 63, and the center hole of the second evenly arranged jig 57a. A second guide bar 55 is inserted into 61, and a second uniform arrangement jig 57 a is fixed to the second guide bar 55.

  The second guide rod 55 to which the second uniform arrangement jig 57a is fixed is pushed upward along the electric pole 1 by a predetermined distance together with the second uniform arrangement jig 57a. In other words, the second guide rod 55 is configured by connecting a plurality of short second guide rods so that a plurality of short second guide rods are added, and this extension connection uses a connection pipe 67 as shown in FIG. It is done.

  And the short 2nd guide bar which comprises the 2nd guide bar 55 is inserted in the center hole 61 of the 2nd equal arrangement jig | tool 57a as mentioned above, Then, it uses the connection pipe 67 and the next The second uniform arrangement jig 57 a is connected to the short second guide rod. By setting the central hole 61 of the second uniform arrangement jig 57 a on the connection pipe 67, the second equal arrangement jig 57 a It is fixed to the second guide bar 55 so as to be placed on top.

  The second guide rod 55 is pushed up by a predetermined distance together with the second equal placement jig 57a while being connected by connecting the second guide rod 55 with the connection pipe 67, and then the second equal placement jig 57a. Next, the second evenly arranged jig 57b is inserted from the side opening 1c and set below the lower ends of the six aramid rods 53 and the second guide rods 55. Then, the lower ends of the six aramid rods 53 are sequentially inserted into the second holding portion 63 of the second uniform arrangement jig 57b and the second hole is inserted into the center hole 61 of the second uniform arrangement jig 57b. After the lower end of the guide bar 55 is inserted, the second guide bar 55 is connected and connected by a connecting pipe 67, and a second uniform arrangement jig 57 b is set on the connecting pipe 67.

  As described above, the second guide rod 55 is inserted into the center hole 61 of the second uniform placement jig 57 and connected to the second guide rod 55 together with the second uniform placement jig 57. By repeatedly performing the operation of pushing the inside upward for all of the six second equal placement jigs 57a-57f, the six aramid rods 53 are evenly arranged in the circumferential direction on the top of the utility pole 1. Thus, the upper portion of the utility pole 1 is reinforced.

  As described above, the upper portion of the utility pole 1 is reinforced by the six aramid rods 53. In order to further strengthen this reinforcement, mortar is inserted between the six aramid rods 53. Fill and reinforce overall. In addition, as described above, the mortar is charged at the same time as the mortar is inserted between the plurality of first reinforcing rod-shaped members composed of the aramid rod 3a and the PC steel wire 3b that reinforce the ground of the utility pole 1. May be.

  In the present embodiment, a pair of third equal placement jigs 59, 59 is provided between the second equal placement jig 57c and the second equal placement jig 57d in order to further reinforce the intermediate portion. And the reinforcement part which consists of several PC steel wire 3b was provided. In this reinforcing portion, the reinforcement by the six aramid rods 53 penetrating the reinforcing portion is further reinforced by the PC steel wire 3b.

  In the present embodiment, the plurality of aramid rods 3a and the PC steel wires 3b are respectively provided with six and twelve, and the plurality of aramid rods 53 are provided with six. 9 and six second equal placement jigs 57a to 57f are provided, but the present invention is not limited to this.

It is a figure which shows the internal structure of the electric pole made from concrete which is a hollow column reinforced using the reinforcement body for hollow columns concerning one Embodiment of this invention. It is a figure which shows the reinforcement structure of the ground part of the concrete electric pole reinforced as shown in FIG. It is a perspective view which shows the 1st equal arrangement jig used for the reinforcing body for hollow pillars shown in FIG. It is a perspective view which shows the state which the upper arm part and lower arm part of the 1st guide rod fixing jig | tool used for the reinforcement body for hollow columns shown in FIG. 1 bent. It is a perspective view which shows the state which the upper arm part and lower arm part of the 1st guide rod fixing jig | tool used for the reinforcement body for hollow columns shown in FIG. It is a perspective view which shows the 2nd guide rod fixing jig used for the reinforcement body for hollow columns shown in FIG. It is a top view which shows the some 2nd equal arrangement jig used for the reinforcing body for hollow pillars shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electric pole 1a Top opening 1c Side opening 3a Aramid rod 3b, 3c PC steel wire 5 1st guide rod 7 1st equal arrangement jig 7a Center hole 7b Holding part 9 1st guide rod fixing jig 11th 2 guide rod fixing jig 43a upper arm portion 43b lower arm portion 53 aramid rod 55 second guide rod 57 second equal arrangement jig 59 third equal arrangement jig 67 connecting pipe 203 arm portion 203c telescopic arm Part 207 Wire compression spring

Claims (6)

A hollow pillar centering on the border between the underground part embedded in the ground and the ground part standing on the ground with a predetermined length of the lower part embedded in the ground and standing on the ground A plurality of first reinforcing rod-shaped members disposed in parallel with each other along the longitudinal direction of the first column, a first guide rod set to the central axis of the hollow column to determine the central axis of the hollow column, A plurality of lower arms whose lower ends are connected at an equal angle in the circumferential direction of the hollow column and swingable in the vertical direction around the lower end with respect to a fixed portion fixedly attached to the lower end of one guide rod The lower end of each of the upper arm and the plurality of lower arm portions is attached to the upper part so as to be swingable in the vertical direction around the lower end, and the upper end is attached to the first guide bar so as to be movable up and down. Respectively corresponding to the plurality of lower arm portions at equal intervals in the circumferential direction of the hollow column and with the upper end as the center. A plurality of upper arms having a plurality of upper arms attached so as to be swingable in a direction, wherein the movable parts attached so as to be movable up and down relative to the first guide rod are lowered along the first guide rod. The lower end of the first guide rod is formed by bending the connecting portion between the lower end of the portion and the upper ends of the plurality of lower arm portions toward the inner peripheral surface of the hollow column, and the connecting portion abutting on the inner peripheral surface of the hollow column. A first guide bar fixing jig for setting the side to the center axis of the hollow column, and a plurality of first reinforcing bar shapes with the first guide bar inserted through the center hole and centering on the first guide bar A plurality of first equal arrangements having a plurality of first holding portions through which a plurality of first reinforcing rod-shaped members are inserted and held so that the members are evenly arranged at equal angles in the circumferential direction of the hollow column. A jig,
The plurality of first reinforcements inclined along the longitudinal direction of the hollow column so as to be substantially parallel to the inclination of the inner peripheral surface that changes obliquely according to the change in inner diameter narrowed from the thick lower end to the thin upper end of the hollow column A plurality of second reinforcing bar-shaped members disposed above the bar-shaped member;
A second guide rod having a lower end coupled to an upper end of the first guide rod and an upper end extending above the hollow column;
The second guide rod is inserted into the center hole, and a plurality of second reinforcing rod-shaped members are arranged at equal angles in the circumferential direction of the hollow column around the second guide rod. A plurality of second equal placement jigs each having a plurality of second holding portions through which the second reinforcing rod-shaped members are inserted and held, each of the plurality of second equal placement jigs The positions of the plurality of second holding portions from the center hole correspond to the sizes of the inner diameters of the hollow columns at the positions where the respective second equal placement jigs are disposed. And a reinforcing body for a hollow column, characterized by comprising: A central hole through which the upper end of the first guide rod is inserted is formed in the middle, and the length extending toward the inner peripheral surface of the hollow column at an equal angle from the central portion disposed at the center of the hollow column is equal. The plurality of arm portions are extended toward the inner peripheral surface of the hollow column by the extension biasing unit from the state in which the plurality of arm portions are contracted by the depressing biasing unit, and the tips of the plurality of arm portions contact the inner peripheral surface of the hollow column. 2. The reinforcing member for a hollow column according to claim 1, further comprising a second guide rod fixing jig that is set in contact with an upper end of the first guide rod as a central axis of the hollow column. The plurality of first reinforcing rod-shaped members have a plurality of aramid rods and a plurality of PC steel wires, and the plurality of aramid rods and the plurality of PC steel wires are arranged in a predetermined arrangement in the circumferential direction of the hollow column. The reinforcing body for a hollow column according to claim 1 or 2, wherein the reinforcing body is disposed. The outer periphery of the plurality of first reinforcing rod-shaped members disposed at an equal angle in the circumferential direction of the hollow column with the plurality of first uniform arrangement jigs is fixed by being tied to a plurality of places with a wire. The reinforcing body for hollow columns according to any one of claims 1 to 3. After throwing crushed stone into the bottom of the hollow column up to the connecting portion of the first guide rod fixing jig set near the lower end of the first guide rod as the central axis of the hollow column, The hollow according to any one of claims 1 to 4 , wherein a mortar is filled between a plurality of first and second reinforcing rod-shaped members arranged at equal angles in a direction to reinforce overall. Column reinforcement. A hollow column method reinforcement with reinforcement of hollow columns according to claims 1 to 5,
A side opening forming step for forming a side opening that is elongated in the longitudinal direction of the hollow column at the side of the upper part of the predetermined length from the ground of the hollow column;
The first guide rod fixing jig is fixed to the lower end of the first guide rod so that the lower end is fixed and the movable portion is movable up and down with respect to the first guide rod, and the first guide rod is fixed. The first guide is inserted into the hollow column from the side opening with the lower end of the first guide bar facing downward in a state where the connecting portion of the jig for use is stretched thinly and attached to the first guide rod. A rod insertion process;
The upper end of the first guide rod inserted into the hollow column is set so as to be almost directly beside the side opening, and the plurality of first uniform arrangement jigs are sequentially inserted into the hollow column from the side opening. A first uniform placement jig insertion step of inserting the first guide rod from the upper end into the center hole of the plurality of first uniform placement jigs;
A plurality of first reinforcing rod-shaped members are sequentially inserted into the hollow pillars from the side openings, and the plurality of first reinforcing rod-shaped members are inserted into the first guide rods through the plurality of first equal arrangement jigs. A first reinforcing rod-shaped member insertion step for sequentially inserting the first holding portion of the tool and fixing the lowermost first uniform arrangement jig closer to the lower ends of the plurality of first reinforcing rod-shaped members; When,
A plurality of first guide rods are held while holding other first equal placement jigs except for the first equal placement jigs fixed to the plurality of first reinforcing rod-shaped members substantially directly beside the side opening. The hollow column is lowered by a predetermined length together with the first equalizing jig fixed to the first reinforcing rod-shaped member and the plurality of first reinforcing rod-shaped members, and at this position, it is almost directly beside the side opening. A first uniform placement jig fixing step of fixing a lowermost first uniform placement jig among the held first other uniform placement jigs to a plurality of first reinforcing bar members; ,
A first uniform arrangement jig fixing and repeating step of repeatedly performing the first equal arrangement jig fixing step on all of the plurality of first equal arrangement jigs. Reinforcement method.

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