JP2012225019A - Guide pipe and method for assisting reinforcement of hollow column using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To shorten treatment time by facilitating insertion of each reinforcing rod-like member into a holding part of a uniform arrangement tool.SOLUTION: Both upper and lower longitudinal ends of a plurality of cylindrical guide pipe connectors 10 are coupled to each other to constitute one slender continuous guide pipe 1. The guide pipe 1 is inserted into aramid rod holding parts 71c and prestressing steel wire holding parts 71e of first and second rod arranging spacers 71 and 75 serving as a plurality of uniform arrangement tools, and the aramid rod holding parts 71c and the prestressing steel wire holding parts 71e of each of first and second rod arranging spacers 71 and 75 are aligned in the same positions in the circumferential direction of the hollow column 1.

Description

  The present invention relates to a guide tube used as an auxiliary tool for assisting a reinforcing method for a hollow column such as a steel tube column or a concrete electric column, the lower portion of which is buried in the ground and standing on the ground, and the guide tube The present invention relates to a method for assisting reinforcement of a hollow column using slab.

  A hollow column such as a steel pipe column or a concrete electric pole is usually erected on the ground with a predetermined length of a base end portion buried in the ground. Such a hollow column is a hollow cylindrical body, that is, a hollow cylindrical body.

  When reinforcing such an existing hollow column, for example, the side formed on the side surface about 1 to 2 m above the boundary between the underground part buried in the ground and the ground part standing on the ground A plurality of reinforcing rod-shaped members are inserted into the hollow pillar from the opening of the part, and further reinforced by injecting mortar or the like.

  Further, in order to uniformly arrange the inserted plurality of reinforcing rod-shaped members at equal angles in the circumferential direction of the hollow column in the hollow column, an equal arrangement jig called a rod arrangement auxiliary tool or a rod arrangement spacer is used. It is done. Then, such a uniform arrangement jig is arranged at a plurality of locations in the longitudinal direction of the plurality of reinforcing bar-shaped members, and a plurality of reinforcing bar-shaped members are inserted and held in a plurality of holding portions of the uniform arrangement jig. (Patent Document 1).

JP 2007-77613 A

  As described above, in the hollow column, a plurality of reinforcing rod-shaped members are inserted into the hollow column from the side openings, and an equal placement jig is disposed at a plurality of locations in the longitudinal direction of the plurality of reinforcing rod-shaped members. However, a plurality of reinforcing bar-like members are inserted and held in the plurality of holding portions of the plurality of evenly arranged jigs, respectively. In order to insert and hold the rod-shaped member, a plurality of reinforcing rod-shaped members are sequentially inserted from the side opening of the hollow column into the hollow column, and then the end of the inserted reinforcing rod-shaped member is the side opening. It moves up and down until it is located right next, and in this state, a plurality of uniform placement jigs are inserted into the hollow columns from the side openings.

  Then, a plurality of reinforcing rod-shaped members are inserted one by one from the end portions into the holding portions of the plurality of evenly arranged jigs inserted into the hollow pillars. It is necessary to adjust the position such as rotating the tool in the circumferential direction and align the positions of the holding portions of the plurality of evenly arranged jigs, and then insert the reinforcing bar members.

  After inserting a plurality of reinforcing bar-like members through a plurality of evenly arranged jigs in this way, each of the reinforcing bar-like members is then moved up and down, and each of the equally arranged jigs is spaced apart at an appropriate interval. The operation of fixing the placement jig to the reinforcing bar member is repeated.

  In such a conventional method, in the operation of inserting a plurality of reinforcing rod-shaped members through the holding portions of the plurality of evenly arranged jigs, a position adjustment such as rotating each of the equally arranged jigs in the circumferential direction is performed. It is necessary to insert the reinforcing bar-like member through the holding portion of the evenly arranged jig after aligning the positions of the holding portions of the evenly arranged jig, and there is a problem that the processing becomes complicated and takes time.

  The present invention has been made in view of the above, and an object thereof is to simplify the insertion of each reinforcing bar-like member into the holding portion of the evenly arranged jig and to reduce the processing time as an auxiliary tool. It is an object of the present invention to provide a guide tube used and a method for assisting reinforcement of a hollow column using the guide tube.

  In order to achieve the above object, a guide tube according to claim 1 is a guide tube used for assisting a reinforcing method of a hollow column having a lower portion buried in the ground and standing on the ground, In order to align each holding part of a plurality of equally arranged jigs having a plurality of holding parts through which a plurality of reinforcing bar-shaped members for column reinforcement are inserted at the same position in the circumferential direction of the hollow column, A guide tube inserted through the holding portion of the plurality of cylindrical guide tube connectors, the upper and lower ends of the cylindrical guide tube connector being connected to each other in the longitudinal direction. To do.

  In the guide tube according to claim 1, the upper and lower ends in the longitudinal direction of a plurality of cylindrical guide tube connectors are connected to each other to form one elongated continuous guide tube, and the guide tubes are arranged in a plurality of equal positions. A plurality of reinforcements for the evenly arranged jig holding parts arranged in this way are inserted through the holding parts of the jig and aligned to the same position in the circumferential direction of the hollow column. It becomes easy to insert the bar-shaped member, and work efficiency and work time can be shortened.

  The guide tube according to claim 2, wherein each of the guide tube connectors has a male screw portion formed at one of upper and lower ends, a female screw portion formed at the other end, and each male screw portion replaced with another respective female screw portion. The gist of the present invention is to form one elongated continuous guide tube by screwing.

  In the guide tube according to claim 2, since a plurality of guide tube connectors are screwed together with the threaded portion to form one elongated continuous guide tube, a guide tube having an arbitrary length can be formed. Can correspond to hollow columns of any length.

  A method for reinforcing a hollow column using a guide tube according to claim 3 is a method for reinforcing a hollow column in which a lower portion is buried in the ground and erected on the ground using the guide tube according to claim 1. A method for assisting reinforcement of a hollow column that assists the hollow column, wherein the guide tube according to claim 1 is inserted into the hollow column from a side opening formed on a side surface of the hollow column, and inserted from the side opening of the hollow column. The guide tube is inserted into the holding portion of the evenly arranged jig, and the process of inserting the guide tube into the holding portion of the evenly arranged jig is performed on a plurality of evenly arranged jigs. The gist of the present invention is to align the respective holding portions of the uniform arrangement jig at the same position in the circumferential direction of the hollow column.

  The hollow column reinforcement assisting method using the guide tube according to claim 3, wherein the process of inserting the guide tube into the holding portion of the evenly arranged jig inserted from the side opening of the hollow column includes a plurality of equally arranged jigs. In order to align each holding portion of the plurality of evenly arranged jigs at the same position in the circumferential direction of the hollow column, a plurality of reinforcing rod shapes for the holding portions of the evenly arranged jigs arranged in this way The member can be easily inserted, and work efficiency and work time can be shortened.

  The hollow column reinforcement assisting method using the guide tube according to claim 4, wherein the guide tube is inserted into the holding portion of the evenly arranged jig into a pair of holding portions facing each other. The gist.

  In the hollow column reinforcement assisting method using the guide tube according to claim 4, since the guide tube is inserted into the pair of holding portions opposed to the evenly arranged jig, each holding portion of the evenly arranged jig is provided. The hollow columns are aligned at the same position in the circumferential direction, and the reinforcing rod-like member can be easily inserted into the holding portion, so that work efficiency and work time can be shortened.

  The hollow column reinforcement assisting method using the guide tube according to claim 5, wherein the holding portions of a plurality of equally arranged jigs are inserted through the guide tube and aligned at the same position in the circumferential direction of the hollow column. After inserting a plurality of reinforcing rod-shaped members, the guide tube is pulled out from the holding portions of the plurality of evenly arranged jigs and taken out from the side openings of the hollow columns to the outside.

  In the hollow column reinforcement auxiliary method using the guide tube according to claim 5, after inserting the reinforcing rod-like member into the holding portion of the evenly arranged jig, the guide tube is pulled out from the holding portion of the evenly arranged jig, Since the guide tube is taken out from the side opening, the guide tube does not remain in the hollow column.

  According to the present invention, the upper and lower ends in the longitudinal direction of a plurality of cylindrical guide tube connectors are connected to each other to form one elongated continuous guide tube, which is connected to a plurality of evenly arranged jigs. A plurality of reinforcing rod-like members for the equally arranged jig holding parts arranged in this way are inserted through the holding parts and the respective holding parts of the evenly arranged jigs are aligned at the same position in the circumferential direction of the hollow columns. Can be easily inserted, and work efficiency and work time can be shortened.

  Further, according to the present invention, the plurality of uniform arrangement jigs are subjected to the process of inserting the guide tube into the holding section of the uniform arrangement jig inserted from the side opening of the hollow column. Since each holding part of the jig is aligned at the same position in the circumferential direction of the hollow column, it becomes easy to insert a plurality of reinforcing bar-like members into the holding parts of the evenly arranged jigs arranged in this way, and work efficiency is improved. And shortening the working time.

It is a front view which shows the guide tube concerning one Embodiment of this invention. It is the perspective view and sectional drawing of a guide pipe connector which comprise the guide pipe shown in FIG. It is a figure which shows the state in which the guide rod and the reinforcement ring were inserted in the hollow pillar. It is a figure which shows the state in which two guide tubes were further inserted in the hollow column shown in FIG. It is a figure which shows the state by which the 1st spacer for rod arrangement | positioning was further inserted in the hollow pillar shown in FIG. It is a perspective view which shows the 1st spacer for rod arrangement | positioning. It is a perspective view which shows the 2nd spacer for rod arrangement | positioning. It is a figure which shows the state by which the pipe for spacer fixation was further inserted in the hollow pillar shown in FIG. FIG. 9 is a diagram showing a state in which 12 first rod arrangement spacers are further inserted into the hollow pillar shown in FIG. 8, and 13 first rod arrangement spacers are inserted in total. FIG. 10 is a diagram illustrating a state where a second rod arrangement spacer is further inserted into the hollow column illustrated in FIG. 9. It is a figure which shows the state by which the 2nd 1st rod arrangement | positioning spacer was further inserted in the hollow pillar shown in FIG. It is a figure which shows the state by which the aramid rod was further inserted in the hollow pillar shown in FIG. It is a figure which shows the state which pulls out a guide tube from the hollow column shown in FIG. It is a figure which shows the state in which the PC steel wire was further inserted in the hollow column shown in FIG. It is a figure which shows the state in which the aramid rod was further inserted in the hollow pillar shown in FIG. It is a figure which shows the state which inserts the 1st rod arrangement | positioning spacer from the side part opening of a hollow pillar. It is the perspective view and sectional drawing which show the guide pipe connector different from FIG. 2 which comprises the guide pipe shown in FIG. It is the perspective view and sectional drawing which show another guide pipe connector. It is a figure which shows a part of guide pipe using the guide pipe connector shown to FIG. 17 and FIG. It is a figure which shows another part of the guide pipe using the guide pipe connector shown in FIG.1, FIG.17 and FIG.18.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention (hereinafter referred to as embodiments) will be described with reference to the drawings.

  FIG. 1 is a front view showing a guide tube according to an embodiment of the present invention. The guide tube 1 shown in the figure is configured by connecting a plurality of short cylindrical guide tube connectors 10 shown in FIGS. 2A and 2B in the longitudinal direction. This guide pipe connector 10 has a male threaded portion 10a formed at one of the upper and lower ends, a female threaded portion 10b formed at the other end, and each male threaded portion 10a is screwed to another female threaded portion 10b in series. By connecting, it is configured as one elongated continuous guide tube as shown in FIG.

  As shown in FIGS. 2 (a) and 2 (b), a small-diameter cylindrical portion 10c without a threaded portion is provided at the tip of the male threaded portion 10a of the guide tube connector 10. This cylindrical portion 10c These function as a guide portion when the male screw portion 10a of the guide tube connector 10 is screwed into the female screw portion 10b of another guide tube connector 10. In addition, a small hole 10d is formed in the middle of the guide tube connector 10, and this hole 10d is like a nail when the guide tube connector 10 is screwed together. This is used to insert a simple rod and tighten the guide tube connector 10 with this rod.

  As shown in FIG. 4, for example, an elongated continuous guide pipe 1 shown in FIG. 1 is embedded in a hollow pillar 100 such as a steel pipe pillar or a concrete electric pole that has a lower portion embedded in the ground 102 and standing on the ground. Used vertically inserted to stand. In FIG. 4, two guide tubes 1 are inserted so as to face each other with a distance in the hollow column 100, but the number of guide tubes 1 is 1 to an aramid rod such as a rod arrangement spacer 71. The number of holding parts 71c is arbitrary, but usually two or three is sufficient.

  Moreover, the hollow pillar 100 shown in FIG. 4 has six reinforcements centering on the ground so as to reinforce the ground at the boundary between the underground part embedded in the underground 102 and the ground part standing on the ground. The ring 21 is disposed so that the outer periphery thereof is close to the inner wall of the hollow column 100, and a guide rod 23 is disposed at the center of the hollow column 100.

  Further, a side opening 100a is formed on the side surface of the hollow column 100 about 1 m to 2 m above the ground near the upper end of the guide rod 23. In FIG. 4, the side opening 100 a is formed on the other side of the hollow column 100, and is shown by a dotted line.

  The guide tube 1, the reinforcing ring 21, and the guide rod 23 described above are inserted into the hollow pillar 100 from the side opening 100a, but the reinforcing ring 21 is passed downward from the side opening 100a. It is lifted and held by three wires 25. A guide rod fixing jig 27 is attached to the lower end of the guide rod 23, and the lower end of the guide rod 23 is fixedly set to the central axis of the hollow column 100 by the guide rod fixing jig 27. ing.

  Here, the role of the guide tube 1 will be described. In order to reinforce the ground, the hollow pillar 100 is inserted with a plurality of reinforcing rod-shaped members made of an aramid rod and a PC steel wire in addition to the reinforcing ring 21 shown in FIG. In order to uniformly arrange the rod-shaped members at equal angles in the circumferential direction of the hollow column 100, first and second rod arrangement spacers 71 and 75, which are equal arrangement jigs as shown in FIGS. 6 and 7, respectively, are provided. It is inserted into the hollow column 100. The first and second rod arrangement spacers 71 and 75 are inserted into the hollow column 100 from the side openings 100a of the hollow column 100 in a standing manner, as shown in FIG. Leveled within 100.

  As shown in FIGS. 6 and 7, the first and second rod arrangement spacers 71 and 75 are the first rod arrangement spacers 71 to which the reinforcing ring 73 is attached. A member without this reinforcing ring 73 is a second rod arrangement spacer 75, which has the same structure inside, and holds a plurality of reinforcing rod-shaped members made of aramid rods and PC steel wires. A plurality of aramid rod holding portions 71c and PC steel wire holding portions 71e.

  More specifically, the first and second rod arrangement spacers 71 and 75 are formed with a central hole 71a through which the guide rod 23 is inserted at the center, and are equally spaced at equal angles radially from the center hole 71a. A plurality of ring-shaped aramid rod holding portions 71c that are inserted and held by the aramid rods that are reinforcing rod-shaped members are provided at the tips of the plurality of connecting portions 71b extending to (in the present embodiment, there are six, It may be 3 to 12 to 24. Usually, it is set by the inner diameter of the hollow column 100.) In addition, adjacent ones of the plurality of aramid rod holding portions 71c are connected in a ring shape by a link 71d, and a PC steel wire that is another reinforcing rod-like member is inserted and held in the middle of the link 71d. A plurality of ring-shaped small-diameter PC steel wire holding portions 71e (six in this embodiment) are formed.

  The plurality of aramid rod holding portions 71c and the PC steel wire holding portions 71e of the first and second rod arrangement spacers 71 and 75 configured as described above are eventually hollow in the circumferential direction of the reinforcing ring 73. A plurality of aramid rod holding portions 71c and PC steel wire holding portions 71e are alternately arranged in the circumferential direction of the hollow column while being equally formed at an equal angle in the circumferential direction of the column 100.

  As described above, the first and second rod arrangement spacers 71 and 75 configured as described above are horizontally placed in the hollow column 100, and each of the plurality of aramid rod holding portions 71c and the PC steel wire is held. A plurality of aramid rods and PC steel wires, which are reinforcing rod-shaped members, are inserted into the portion 71e, and these aramid rods and PC steel wires are held, whereby the aramid rods and PC steel wires are equiangular in the circumferential direction of the hollow column 100. Are arranged evenly.

  As shown in FIG. 9 or FIG. 12A, the first and second rod arrangement spacers 71 and 75 are plural (in this embodiment, 13 first rod arrangement spacers 71 (FIG. 9). ), Two second rod arrangement spacers 75 (FIG. 12A), which are put in the hollow column 100, and the aramid rod holding portions of the plurality of first and second rod arrangement spacers 71 and 75. The aramid rod and the PC steel wire are inserted into the 71c and the PC steel wire holding portion 71e, respectively. As described above, the aramid rod holding portions 71c of the plurality of first and second rod arrangement spacers 71 and 75 and In order to easily and efficiently perform the process of inserting the aramid rod and the PC steel wire into the PC steel wire holding portion 71e, the aramid rod holding portions 7 of the first and second rod arrangement spacers 71 and 75 are used. It is necessary that the circumferential positions of c and the PC steel wire holding portion 71e are aligned, that is, the circumferential positions of the aramid rod holding portion 71c and the PC steel wire holding portion 71e are required. If the positions are aligned, the aramid rod and the PC steel wire can be inserted easily and smoothly.

  Thus, in order to align the circumferential positions of the aramid rod holding portions 71c and the PC steel wire holding portions 71e of the plurality of first and second rod arrangement spacers 71 and 75, the aramid rod holding portions 71c and PC Before inserting the aramid rod and the PC steel wire into the steel wire holding part 71e, as shown in FIG. 4, the two guide tubes 1 are put in the hollow column 100 in advance, and the two guide tubes are inserted. 9 is inserted into, for example, two opposing positions of the aramid rod holding portions 71c of the plurality of first and second rod arrangement spacers 71 and 75 as shown in FIG. 9 or FIG. 12 (a). It is.

  By setting in this way, the aramid rod holding portions 71c and the PC steel wire holding portions 71e of the plurality of first and second rod arrangement spacers 71 and 75 can be aligned in the hollow column 100, that is, Since the holding portions 71c and 71e are aligned at the same position in the circumferential direction of the hollow column 100, the holding portions 71c and 71e of the first and second rod arrangement spacers 71 and 75 aligned in this way are arranged. It becomes easy and efficient to insert the aramid rod and the PC steel wire which are reinforcing rod-shaped members. Thus, the guide tube 1 is used to align the holding portions 71c and 71e of the first and second rod arrangement spacers 71 and 75 at the same position in the circumferential direction of the hollow column 100.

  Next, with reference to FIG. 3 to FIG. 15 in order, a method for assisting reinforcement of the hollow column 100 using the guide tube 1 of the present embodiment will be described in the order of work.

  First, as shown in FIG. 3, a guide rod 23 having a guide rod fixing jig 27 attached to the lower end is inserted into the hollow column 100 from the side opening 100 a of the hollow column 100, and the guide rod 23 is inserted into the hollow column 100. Set to the center axis of. Then, in order to reinforce the ground of the hollow column 100, a plurality (six in this embodiment) of reinforcing rings 21 are inserted from the side openings 100a while standing vertically as shown in FIG. 16, for example. After that, as shown in FIG. 3, the plurality of reinforcing rings 21 are collectively arranged on the ground of the hollow column 100. The plurality of reinforcing rings 21 are held so as to be lifted by three wires 25 passed downward from the side openings 100 a and are fixed to the ground of the hollow pillar 100.

  Next, the short cylindrical spacer arrangement auxiliary tool 31 is inserted into the hollow column 100 from the side opening 100a, and the short cylindrical spacer arrangement auxiliary tool 31 is inserted into the upper end of the guide rod 23 as shown in FIG. The spacer placement auxiliary tool 31 is held by the stainless wire 33 so as to be suspended. That is, the spacer placement auxiliary tool 31 to which the stainless wire 33 is attached is inserted into the hollow column 100 from the side opening 100a and then inserted into the upper end of the guide rod 23, and the stainless wire 33 is inserted into the side opening 100a. Hold externally through.

  Next, in the same manner, as shown in FIG. 4, another short cylindrical spacer placement aid 35 is inserted into the upper end of the guide bar 23 and attached onto the spacer placement aid 31. The placement auxiliary tool 35 is fixed to the guide rod 23 with a potato screw. Then, similarly, as shown in FIG. 4, another short cylindrical spacer placement aid 37 is inserted into the upper end of the guide rod 23 and attached onto the spacer placement aid 35.

  Next, as shown in FIG. 4, two guide tubes 1 shown in FIG. 1 are inserted into the hollow column 100 from the side opening 100 a. The two guide tubes 1 are inserted so as to face each other at both ends of the hollow column 100 with a distance in the hollow column 100. Then, the first rod arrangement spacer 71 shown in FIG. 6 is inserted into the hollow column 100 from the side opening 100a while standing vertically as shown in FIG. The first rod arrangement spacer 71 is the first of the plurality of first rod arrangement spacers 71 inserted into the hollow column 100, that is, the first first rod arrangement spacer 71. .

  Then, as shown in FIG. 5A, the upper end of the guide bar 23 is inserted into the center hole 71a of the horizontal first rod arranging spacer 71, and is provided at the upper end of the guide bar 23. The first rod arrangement spacer 71 is placed on the spacer arrangement auxiliary tool 37. Then, the upper ends of the two guide tubes 1 are inserted into the two aramid rod holding portions 71 c of the first rod arrangement spacer 71. That is, as shown in FIG. 5 (b), among the aramid rod holding portions 71c of the first rod arrangement spacer 71, two aramid rod holding portions that are diagonally opposite to each other, that is, facing each other at a distance. The upper ends of the two guide tubes 1 are inserted into 71c.

  When inserting the first rod arrangement spacer 71 into the hollow column 100, the stainless wire 33 attached to the spacer arrangement auxiliary tool 31 is inserted into the central hole 71a of the first rod arrangement spacer 71. The first rod arrangement spacer 71 is inserted into the hollow column 100 after passing through the close opening. By setting the stainless steel wire 33 in this way, when the stainless steel wire 33 is pulled up or pulled down outside the hollow column 100, the spacer arranging auxiliary tool 31 can be smoothly pulled up or pulled down by the stainless steel wire 33. As a result, the first rod arrangement spacer 71 placed on the spacer arrangement auxiliary tool 31 can be smoothly raised or lowered similarly.

  Further, in the insertion of the two guide tubes 1, as indicated by an arrow 200 in FIG. 5A, the guide tube 1 is pulled upward, and the upper end of the pulled guide tube 1 is disposed at the first rod arrangement. After inserting the guide tube 1 into the aramid rod holding portion 71c of the spacer 71 and confirming that the guide tube 1 is floating from the bottom of the hollow column 100 in this state, the guide tube 1 is pinned with the first rod arrangement spacer 71. Secure to.

  Next, after loosening the screw of the spacer arranging auxiliary tool 35 to make it free, the stainless steel wire 33 of the spacer arranging auxiliary tool 31 is loosened. As shown by an arrow 201 in FIG. The rod arranging spacer 71 is moved down together with the spacer arranging auxiliary tool 31, the spacer arranging auxiliary tool 35, and the spacer arranging auxiliary tool 37. When the first rod arrangement spacer 71 is lowered, the pin that has fixed the guide tube 1 is pulled out and lowered as indicated by an arrow 202 in FIG.

  Then, the spacer fixing pipe 39 is inserted into the hollow column 100 from the side opening 100a, and the spacer fixing pipe 39 is inserted into the upper end of the guide rod 23 as shown in FIG. 71 is disposed on 71. The spacer fixing pipe 39 is used to provide a space between the first first rod arrangement spacer 71 and the next second rod arrangement spacer 71. The length is, for example, about 13 cm.

  When the spacer fixing pipe 39 is inserted into the upper end of the guide rod 23 in this way, the second first rod arrangement spacer 71 is moved to the side in the same manner as the first first rod arrangement spacer 71 described above. Inserted into the hollow column 100 so as to stand upright from the opening 100a and then horizontal, and the upper end of the guide rod 23 is inserted into the center hole 71a of the horizontal first rod arranging spacer 71. Then, it is placed on the spacer fixing pipe 39 provided at the upper end of the guide rod 23. Then, the upper ends of the two guide tubes 1 are similarly arranged with respect to the two aramid rod holding portions 71c of the second first rod arrangement spacer 71, that is, a plurality of first rod arrangement spacers 71 are arranged. The upper end of the guide tube 1 is inserted into two diagonal aramid rod holding portions 71c of the aramid rod holding portion 71c.

  Further, similarly, the second spacer fixing pipe 39 is inserted into the hollow column 100 from the side opening 100a, and this spacer fixing pipe 39 is inserted into the upper end of the guide rod 23. The process of inserting the first rod arrangement spacer 71 is repeated up to the thirteenth first rod arrangement spacer 71.

  In the insertion of the plurality of first rod arrangement spacers 71 described above, each time the first rod arrangement spacer 71 is inserted, the stainless wire 33 attached to the spacer arrangement auxiliary tool 31 is attached to each of the first rod arrangement spacers 71. The first rod arrangement spacer 71 is inserted into the hollow column 100 after passing through the opening near the center hole 71a of the first rod arrangement spacer 71. In this case, the first rod arrangement is made to penetrate the stainless steel wire 33. The opening close to the center hole 71a of the rod arranging spacer 71 is the same position in all the first rod arranging spacers 71 so that the stainless steel wire 33 is almost straight, that is, not zigzag or bent. It is necessary to penetrate each opening. When the stainless steel wire 33 is pulled up or pulled down from the hollow column 100 by passing through the stainless steel wire 33 in this manner, the stainless steel wire 33 is used to pass the first via the spacer placement aid 31. The rod arrangement spacers 71 can all be raised and lowered smoothly in a similar manner.

  FIG. 9 shows a state where the 13 first rod arrangement spacers 71 are inserted as described above. Thus, by inserting the two guide tubes 1 into the two aramid rod holding portions 71c at the diagonal positions of the thirteen first rod arrangement spacers 71, the thirteen first rods In the arrangement spacer 71, the respective aramid rod holding portions 71 c are aligned at the same position in the circumferential direction of the hollow column 100. That is, by aligning all the aramid rod holding portions 71c in the same position in this way, it becomes easy to insert the aramid rod and the PC steel wire, which are reinforcing rod-like members, into these aramid rod holding portions 71c. It is possible to improve the efficiency and shorten the work time.

  After the thirteen first rod arrangement spacers 71 have been inserted in this manner, the top of the thirteenth first rod arrangement spacer 71 at the top in FIG. Then, the spacer fixing pipe 39 is inserted into the upper end of the guide rod 23, and then the second rod arrangement spacer 75 without the reinforcing ring 73 shown in FIG. 7 is inserted into the hollow column 100 from the side opening 100a. . Then, the upper end of the guide rod 23 is inserted into the center hole 71a in the same way as the first rod arrangement spacer 71 described above with respect to the second rod arrangement spacer 75, and the upper end of the guide rod 23 is fixed to the spacer. As described above, the two guide tubes 1 are inserted into and fixed to the two aramid rod holding portions 71c at the opposite corners of the second rod arrangement spacer 75 in the same manner as described above. . This state is the state shown in FIG. 10A, and the state of the second rod arrangement spacer 75 in which the two guide tubes 1 are inserted into the aramid rod holding portion 71 c of the second rod arrangement spacer 75. Is shown in FIG. The inserted second rod arrangement spacer 75 is the first second rod arrangement spacer 75.

  Even when the first second rod arrangement spacer 75 is inserted, the stainless steel wire 33 attached to the spacer arrangement auxiliary tool 31 is attached to the first rod arrangement spacer 71 as in the case of the first rod arrangement spacer 71. It is the same that the second rod arrangement spacer 75 is inserted into the hollow column 100 after passing through the opening near the center hole 71 a of the second rod arrangement spacer 75.

  Next, a guide rod connecting pipe 65 that is shorter than the spacer fixing pipe 39, for example, about 10 cm in length, is inserted from the side opening 100a, and above the first second rod arrangement spacer 75, It is inserted into the upper end of the guide bar 23 and fixed with a high nut. The state where the guide rod connecting pipe 65 is inserted is shown in FIG. 11, and a second second rod arrangement spacer 75 described below is provided on the guide rod connecting pipe 65. It has already been inserted.

  That is, next, the second second rod arrangement spacer 75 is inserted into the hollow column 100 from the side opening 100a, and the guide rod is connected to the center hole 71a of the second second rod arrangement spacer 75. The upper end of the guide rod 23 protruding above the pipe 65 is inserted as shown in FIG. 11, and two aramids at the opposite corners of the second second rod arrangement spacer 75 are inserted as described above. The two guide tubes 1 are inserted and fixed to the rod holding portion 71c. Thus, following the 13 first rod arrangement spacers 71, the two second rod arrangement spacers 75 are inserted, and the aramid rod holding portions of the two second rod arrangement spacers 75 are inserted. By inserting the two guide tubes 1 into the 71c as well, as described above, each of the two second rod arrangement spacers 75 as well as the 13 first rod arrangement spacers 71 is provided. The aramid rod holding portion 71 c is also aligned at the same position in the circumferential direction of the hollow column 100 following the first rod arrangement spacer 71. That is, when all the aramid rod holding portions 71c of the 13 first rod arrangement spacers 71 and the two second rod arrangement spacers 75 are aligned at the same position in this way, It becomes easy to insert the aramid rod and the PC steel wire, which are reinforcing rod-like members, into the portion 71c, and work efficiency and work time can be shortened. Note that the stainless steel wire 33 attached to the spacer arranging auxiliary tool 31 does not pass through the second second rod arranging spacer 75.

  Next, the 13 first rod arrangement spacers that are inserted into the hollow column 100 from the side opening 100a or from the upper side of the hollow column 100 and aligned as described above are inserted into the aramid rod 61 that is a reinforcing rod-shaped member. The aramid rod 61 is inserted into all the aramid rod holding portions 71c of 71 and the two second rod arrangement spacers 75 as shown in FIG. Then, when it is confirmed that the inserted aramid rod 61 has been lowered and arrived at the bottom, it is temporarily fixed with the second rod arrangement spacer 75 that is second from the top in a state of floating about 5 cm. The insertion process of the aramid rod 61 is performed in the same manner for the second one. The two aramid rods 61 are connected to the two aramid rod holding portions 71c on the diagonal as shown in FIG. Do it.

  As described above, when the two aramid rods 61 are inserted, as shown in FIG. 12, the aramid rod holding portion 71c of the first rod arrangement spacer 71 and the second rod arrangement spacer 75 has 2 Since the two aramid rods 61 and the two guide tubes 1 are inserted, next, as shown in FIG. 13A, the two guide tubes 1 are connected to the first rod arrangement spacer 71 and the second guide tube 1. The rod arrangement spacer 75 is pulled out from the aramid rod holding portion 71c and taken out from the side opening 100a. As a result, only the aramid rod 61 is diagonally inserted into the first rod arrangement spacer 71 and the second rod arrangement spacer 75 as shown in FIG. However, all the aramid rod holding portions 71c of the 13 first rod arrangement spacers 71 and the two second rod arrangement spacers 75 are aligned at the same position.

  Next, as shown in FIG. 14, a plurality (six in this embodiment) of PC steel wires 63 are made of PC steel wire holding portions 71 e of the first rod arrangement spacer 71 and the second rod arrangement spacer 75. 13 steel rods 63 are inserted one by one sequentially into the hollow column 100 from the side opening 100a or from above the hollow column 100, and are aligned as described above. As shown in FIG. 14, the PC steel wires 63 are inserted and fixed in all the PC steel wire holding portions 71e of the arrangement spacer 71 and the two second rod arrangement spacers 75.

  Then, as shown in FIG. 15, the remaining (four in this embodiment) aramid rods 61 are inserted into the aramid rod holding portions 71 c of the first rod arrangement spacer 71 and the second rod arrangement spacer 75. For this purpose, 13 aramid rods 61 are sequentially inserted into the hollow column 100 from the side openings 100a or from the upper side of the hollow column 100 one by one, and the 13 first rod arrangement spacers 71 aligned as described above. Then, the aramid rod 61 is inserted and fixed to all the aramid rod holding portions 71c of the two second rod arrangement spacers 75 as shown in FIG.

  In the insertion of the aramid rod 61 and the PC steel wire 63, all the aramid rod holding portions 71c and the aramid rod holding portions of the 13 first rod arrangement spacers 71 and the two second rod arrangement spacers 75 are used. Since 71c is aligned at the same position in the circumferential direction of the hollow column 100, the insertion of the aramid rod and the PC steel wire becomes extremely easy, and the work efficiency and the work time can be shortened.

  FIGS. 17A and 17B are a perspective view and a cross-sectional view showing a guide pipe connector 11 different from FIG. 2 constituting the guide pipe 1 shown in FIG. The guide pipe connector 11 is of a cylindrical shape that is shorter than the guide pipe connector 10 shown in FIG. 2, and is formed with a male screw portion 11a at the upper end and a cylindrical portion 11b without a screw portion. Has been.

  FIGS. 18A and 18B are a perspective view and a sectional view showing still another guide pipe connector 13. The guide tube connector 13 is a cylindrical member having a length substantially the same as the guide tube connector 11 shown in FIG. 17, and a cylindrical portion 13a without a thread portion is formed at the upper end, and the lower end is formed on the inner side. Are formed in the female screw portion 13b.

  The guide tube connector 11 and the guide tube connector 13 shown in FIGS. 17 and 18 are adjusted in length when the long guide tube 1 as shown in FIG. This is used when a pipe made of polyvinyl chloride having a thickness (hereinafter simply abbreviated as a PVC pipe) or the like is used instead of the guide pipe connector 10, and FIG. 19 and FIG. Is shown.

  That is, FIG. 19 uses the guide tube connector 11 at the upper end and the guide tube connector 13 at the lower end, and the cylindrical portion 11b of the guide tube connector 11 and the cylindrical portion 13a of the guide tube connector 13 A PVC pipe 15 having an arbitrary length is connected between them, and by adjusting the length of the PVC pipe 15, a guide pipe having an arbitrary length can be obtained. For example, as shown in FIG. When the guide tube 1 is short in length, or when a long pipe can be used, the guide tube 1 can be appropriately used according to the equipment situation of the guide tube 1 at the construction site.

  20 uses the guide tube connector 10 at the upper end, and the male screw portion 11a of the guide tube connector 11 is screwed into the female screw portion 10b at the lower end of the guide tube connector 10 so as to be connected to the guide tube connector 10. A guide pipe connector 11 is connected, and a guide pipe connector 13 is connected to the lower end of the guide pipe connector 11 via a vinyl chloride pipe 17. As in the case of FIG. By adjusting the length, it becomes possible to have an arbitrary length. For example, the guide tube 1 shown in FIG. 1 can be used when the length is insufficient.

  The PVC pipes 15 and 17 are merely inserted and connected to the cylindrical portion 11b of the guide tube connector 11 and the cylindrical portion 13a of the guide tube connector 13, so that threading at the construction site is not particularly required. Therefore, the work at the construction site can be made easier. Note that this connecting portion may not be easily detached by winding a vinyl tape or the like, for example, depending on the connection status, specifically the tightening status.

DESCRIPTION OF SYMBOLS 1 Guide tube 10, 11, 13 Guide tube connector 21 Reinforcement ring 23 Guide rod 27 Guide rod fixing jig 31, 35, 37 Auxiliary tool 33 for spacer arrangement Stainless steel wire 39 Spacer fixing pipe 61 Aramid rod 63 PC steel wire 65 Guide rod connecting pipe 71 First rod arrangement spacer 71a Center hole 71c Aramid rod holding portion 71e PC steel wire holding portion 75 Second rod arrangement spacer 100 Hollow column 100a Side opening 102 Underground

Claims (5)

A guide tube used to assist the reinforcing method of the hollow column with the lower part buried in the ground and standing on the ground,
In order to align the respective holding portions of the plurality of evenly arranged jigs having the plurality of holding portions through which the plurality of reinforcing rod-shaped members for reinforcing the hollow columns are inserted at the same position in the circumferential direction of the hollow columns, A guide tube that is inserted into the holding portion of the tool, and is configured as one elongated continuous guide tube by connecting the upper and lower ends in the longitudinal direction of a plurality of cylindrical guide tube connectors. A guide tube. Each of the guide pipe connectors has a male threaded portion formed at one of the upper and lower ends, a female threaded portion formed at the other end, and each male threaded portion is screwed to another female threaded portion to form one elongated continuous line. The guide tube according to claim 1, wherein the guide tube is constructed. Using the guide tube according to claim 1, a hollow column reinforcement assisting method for assisting a hollow column reinforcement method in which a lower portion is buried in the ground and standing on the ground,
Insert the guide tube into the hollow column from the side opening formed on the side surface of the hollow column,
Inserting the guide tube through the holding part of the uniform arrangement jig inserted from the side opening of the hollow column,
The process of inserting the guide tube into the holding portion of the uniform placement jig is performed on the plurality of uniform placement jigs, and the respective holding portions of the plurality of uniform placement jigs are positioned at the same position in the circumferential direction of the hollow column. A method for assisting reinforcement of a hollow column using a guide tube, characterized by comprising:   4. The auxiliary reinforcement of a hollow column using a guide tube according to claim 3, wherein the guide tube is inserted into the holding portion of the evenly arranged jig into a pair of opposing holding portions of the evenly arranged jig. Method. After inserting the plurality of reinforcing rod-shaped members through the holding portions of the plurality of evenly arranged jigs that are inserted through the guide tube and each holding portion is aligned at the same position in the circumferential direction of the hollow column, 5. The method for assisting reinforcement of a hollow column using a guide tube according to claim 3, wherein the hollow column is pulled out from a holding portion of the uniform arrangement jig and taken out from a side opening of the hollow column.

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