JP2006200270A - Joining structure and joining method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To shorten a construction period, and to reduce construction cost, by enhancing construction efficiency. <P>SOLUTION: This joining structure joins a pair of mutual adjacent reinforced concrete members 10 and 20, and has one cutout part 14 arranged in a joining end part of one reinforced concrete member 10 and opening at least the joining end surface 15 side, one main reinforcement 12 for projecting one end part in one cutout part 14, the other cutout part 24 arranged in a part corresponding to one cutout part 14 of the joining end part of the other reinforced concrete member 20 and opening at least the joining end surface 25 side, the other main reinforcement 22 for projecting one end part in the other cutout part 24, and a joining means 30 for joining one main reinforcement 12 and the other main reinforcement 22. The joining means 30 is composed of a screw type joint, a sleeve type joint or the like. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a joining structure and a joining method, and more particularly to a joining structure and a joining method effective for joining between adjacent reinforced concrete members (PC members such as columns and beams).

  In recent years, PC members such as precast concrete (hereinafter referred to as PC) columns and beams have been widely used in order to improve the quality of construction of reinforced concrete structures and shorten the construction period. When a reinforced concrete structure is constructed using PC members such as PC pillars and beams, various joining methods are used for joining between adjacent PC members. An example thereof is shown in FIGS.

That is, the joining method shown in FIG. 10 and FIG. 11 is a joining method between a pair of adjacent PC beam members 50 and 60, and as shown in FIG. The main muscles 52 and 62 protrude from the 56 and 66 by a predetermined length, respectively, and the protruding portions are bent at a predetermined angle from a predetermined position. Then, the PC beam members 50 and 60 are positioned at predetermined positions, the joint end surfaces 56 and 66 of the PC beam members 50 and 60 are opposed to each other at a predetermined interval, and protrude from the joint end surfaces 56 and 66. The main muscles 52 and 62 that are present are overlapped with each other. Then, as shown in FIG. 11, concrete is placed between the joint end faces 56 and 66 of both PC beam members 50 and 60.
In this way, a pair of adjacent PC beam members 50 and 60 can be joined together.

  The joining method shown in FIG. 12 is a so-called transverse insertion method, in which a joint 63 for jointing is embedded in the other PC beam member 60 in advance, and the main bar 52 of one PC beam member 50 is connected to the joining end surface 56. It protrudes for a predetermined length. Then, both the PC beam members 50 and 60 are positioned at predetermined positions, the joint end surfaces 56 and 66 are opposed to each other, and one PC beam member 50 is relatively horizontally moved in the direction of the other PC beam member 60. The main bar 52 is inserted into the joint 63 for joining. In this way, a pair of adjacent PC beam members 50 and 60 can be joined together.

  By the way, among the joining methods as described above, the joining method described in FIGS. 10 and 11 needs to place concrete at the joint between adjacent PC beam members 50 and 60 in the field. Concrete must be placed in a state where both the PC beam members 50 and 60 are supported by a support or the like.

 For this reason, the support or the like cannot be removed until the placed concrete is cured and integrated with both the PC beam members 50 and 60, and the support and the like interferes with the work. The construction of the lower part and the upper part cannot be continuously performed, and the construction period is extended.

  In addition, concrete must be placed at the joint between the PC beam members 50 and 60. For this reason, since the reinforcement work of a shear reinforcement and the assembly work of a formwork arise in the junction part between both PC beam members 50 and 60, a construction period becomes long.

 In order to cope with such a problem, it is conceivable that the same concrete (concrete having a higher design standard strength) is placed in the joint between the PC beam members 50 and 60 and the concrete is placed in the slab. However, in that case, even if the construction period can be shortened, the construction cost is high because it is necessary to use concrete having a higher strength than necessary.

  Furthermore, in the joining method described in FIG. 12, one PC beam member 50 or the other PC beam member 60 must be moved horizontally, so that a wide space necessary for the movement must be ensured. Furthermore, when one PC beam member 50 or the other PC beam member 60 is moved horizontally, an already built pillar or the like becomes an obstacle, and therefore, the construction considering the process of moving both PC beam members 50 and 60 is considered. The procedure must be planned, the construction procedure becomes complicated, and the construction period becomes longer. Furthermore, since there are places where the PC beam members 50 and 60 cannot be moved horizontally when building, concrete must be placed on such places in the field.

  The present invention has been made in view of the above-described conventional problems. When applied to a PC member such as a column or a beam, the present invention is easy to install and can significantly reduce the construction period. It aims to provide a method.

In order to solve the above problems, the present invention employs the following means.
That is, the invention according to claim 1 is a joining structure for joining a pair of adjacent reinforced concrete members, and is provided at a joining end portion of the one reinforced concrete member, and at least one notch portion having an opening at the joining end face side. And one main bar embedded in the one reinforced concrete member with one end protruding into the one notch part, and a portion corresponding to the one notch part of the joint end part of the other reinforced concrete member Joining at least the other notch that opens at the joining end face side, the other main reinforcing member embedded in the other reinforced concrete member with one end projecting into the other notch, and the one main reinforcing bar and the other main reinforcing bar. It is characterized by comprising a joining means.

  According to the joining structure of the present invention, the joining end surfaces of one reinforced concrete member and the other reinforced concrete member are aligned with each other and are located in one end of one main reinforcing bar and the other notch. A pair of adjacent reinforced concrete members can be joined by joining one end of the other main reinforcing bar through a joining means.

  Therefore, since it is not necessary to cast concrete at the joint between the two reinforced concrete members at the site, there is no need for support for supporting the two reinforced concrete members. Construction of the lower part and the upper part of the member can be performed, and the construction period can be shortened.

 In addition, since it is not necessary to place concrete at the joint between the two reinforced concrete members, it is possible to reduce rebar work and formwork work, thereby shortening the work period.

  Furthermore, since the joining end surface of one reinforced concrete member and the joining end surface of the other reinforced concrete member are matched, it is only necessary to join one end part of one main reinforcing bar and one end part of the other main reinforcing bar by a joining means. There is no need for a large movement space for moving the slab horizontally, and the order of installation does not become complicated.

  The invention according to claim 2 is the joining structure according to claim 1, wherein the joining means includes a male screw portion provided at one end portion of the one main reinforcement and a male screw provided at one end portion of the other main reinforcement. And a screw-type joint having a female screw part to which the male screw parts are screwed together.

 According to the joining structure of the present invention, the male threaded portion of one main muscle, the male threaded portion of the other main muscle, and the female threaded portion of the threaded joint are screwed together, so that a threaded joint is formed between one end portions of both main muscles. And a pair of adjacent reinforced concrete members are joined together. Therefore, joining between a pair of adjacent reinforced concrete members can be facilitated.

  The invention according to claim 3 is the joining structure according to claim 1, wherein the joining means includes a sleeve-type joint that fits one end of the one main bar and one end of the other main bar. It is characterized by that.

 According to the joining structure of the present invention, by fitting one end of one main reinforcing bar and the other main reinforcing bar to a sleeve type joint, one end part of both main bars is joined via the sleeve type joint, The reinforced concrete members are joined. Therefore, joining between a pair of adjacent reinforced concrete members can be facilitated.

  The invention according to claim 4 is the joining structure according to claim 2 or 3, characterized in that a filler made of resin, grout, or the like is filled between the joint and one end of both main bars. To do.

  According to the joining structure of the present invention, a filler made of resin or grout is filled between one end of one main bar and one end of the other main bar and the threaded joint or sleeve joint. The gap between them can be filled, and one end of one main bar and one end of the other main bar can be firmly joined.

  The invention according to claim 5 is the joining structure according to any one of claims 1 to 4, wherein the one notch and the other notion are joined via the joining means. The inside is filled with grout or concrete.

 According to the joining structure of the present invention, the grout or the concrete is filled in one notch portion of one reinforced concrete member and the other notch portion of the other reinforced concrete member. Can be firmly joined.

  The invention according to claim 6 is the joint structure according to any one of claims 1 to 5, wherein both the joints are formed by filling grout between joint end surfaces of the one reinforced concrete member and the other reinforced concrete member. It is characterized by performing joint treatment between the end faces.

 According to the joint structure according to the present invention, joint treatment is performed between both joint end faces by filling the grout between the joint end face of one reinforced concrete member and the joint end face of the other reinforced concrete member.

  The invention according to claim 7 is a joining method for joining between a pair of adjacent reinforced concrete members, wherein at least one notch portion whose joint end face side opens is provided at a joining end portion of the one reinforced concrete member, One end portion of one main reinforcing rod embedded in the one reinforced concrete member is protruded into one notch portion, and at least a joint end surface corresponding to the one notch portion of the joining end portion of the other reinforced concrete member The other notch part which opens on the side is provided, and one end part of the other main reinforcing bar embedded in the other reinforced concrete member protrudes into the other notch part, and one end part of the one main reinforcing bar and one end of the other main reinforcing bar Parts are joined together by joining means in the notches.

 According to the joining method of the present invention, the joining end surfaces of one reinforced concrete member and the other reinforced concrete member are aligned with each other, and are located in one end portion of one main reinforcing bar and the other notch portion. By joining one end part of the other main reinforcing bar integrally through the connecting means, the pair of adjacent reinforced concrete members can be integrally connected.

  Therefore, since it is not necessary to cast concrete at the joint between the two reinforced concrete members at the site, there is no need for support for supporting the two reinforced concrete members. Construction of the lower part and the upper part of the member can be performed, and the construction period can be shortened.

 In addition, since it is not necessary to place concrete at the joint between the two reinforced concrete members, it is possible to reduce rebar work and formwork work, thereby shortening the work period.

  Furthermore, since the joining end surface of one reinforced concrete member and the joining end surface of the other reinforced concrete member are matched, it is only necessary to join one end part of one main reinforcing bar and one end part of the other main reinforcing bar by a joining means. There is no need for a large movement space for moving the slab horizontally, and the order of installation does not become complicated.

  As described above, according to the joining structure and joining method according to the present invention, the joining end face of one reinforced concrete member and the joining end face of the other reinforced concrete member are combined, and one end of one main reinforcing bar and the other main reinforcing bar By joining one end with a joining means, it is possible to integrally join between a pair of adjacent reinforced concrete members, so that the workability can be improved and the time required for construction can be reduced. Can be shortened and construction costs can be reduced.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 5 show a first embodiment of a joining structure and joining method according to the present invention. FIG. 1 is a front view showing a state before joining, and FIG. 2 is one reinforced concrete of FIG. FIG. 3 is a side view of the other reinforced concrete member of FIG. 1, FIG. 4 is a front view showing a state after joining, and FIG. 5 is an explanatory view showing a state in which concrete is placed in the notch.

  That is, this joining structure 1 is applied to joining between a pair of PC beam members 10 and 20 which are a pair of reinforced concrete members arranged adjacent to each other in the horizontal direction. There is provided a joining means 30 for joining the main reinforcing bar 12 and the other main reinforcing bar 22 of the other PC beam member 20.

  As shown in FIG. 1, one PC beam member 10 is composed of a concrete beam main body 11 having a rectangular cross section, and one main bar composed of a deformed reinforcing bar or the like embedded in the lower end of the beam main body 11 over the entire length. (Bottom bar) 12, a deformed reinforcing bar or the like that is embedded at a predetermined interval along the longitudinal direction of the beam body 11 in the peripheral part in the beam body 11 and whose upper end projects upward from the upper surface of the beam body 11 And a stirrup 16 made of

 The end face on the right side in the longitudinal direction of one PC beam member 10 is formed on a joining end face 15 with the other PC beam member 20 as shown in FIGS. On the lower surface side of the joint end portion of one of the PC beam members 10, a notch is formed across the entire width from the joint end surface 15 to a predetermined position in the longitudinal direction, and is formed in one notch portion 14 having a predetermined depth. One end of each of the main bars 12 protrudes into the notch 14 so as to be flush with the joint end face 15. In addition, the one notch part 14 should just open the joint end surface side with the other PC beam member 20 at least.

  As shown in FIG. 1, the other PC beam member 20 is embedded in the beam main body 21 having a rectangular cross section made of concrete and the lower end portion in the beam main body 21 over the entire length, like the one PC beam member 10. And the other main reinforcing bar (bottom reinforcing bar) 22 made of deformed reinforcing bars and the like, and the peripheral part in the beam main body 21 are embedded at predetermined intervals along the longitudinal direction of the beam main body 21, and the upper end is the beam main body 21. And a stirrup 26 made of a deformed reinforcing bar or the like protruding from the upper surface of the steel plate.

 The end face on the left side in the longitudinal direction of the other PC beam member 20 is formed on a joining end face 25 with one PC beam member 10 as shown in FIGS. On the lower surface side of the joint end portion of the other PC beam member 10, it is notched over the entire width from the joint end surface 25 to a predetermined position in the longitudinal direction, and is formed in the other notch portion 24 having a predetermined depth. One end of each other main reinforcement 22 protrudes into the notch 24 so as to be flush with the joint end face 25. In addition, the other notch part 24 should just open the joint end surface side with the other one PC beam member 10 at least.

  As shown in FIGS. 1 to 3, the joining means 30 is a screw-like male screw portion 13 provided on the peripheral surface of one end portion of one main bar 12 protruding into one notch portion 14 of one PC beam member 10. A male threaded portion 23 provided on the peripheral surface of one end of the other main reinforcing bar 22 projecting into the other notch 24 of the other PC beam member 20, the male threaded portion 13 of one main reinforcing rod 12, and the other The threaded joint 31 includes a female threaded portion 32 to which the male threaded portion 23 of the main bar 22 is screwed.

 The threaded joint 31 has a substantially cylindrical shape, and is provided with a female thread portion 32 for screwing the male thread portion 13 of one main muscle 12 and the male thread portion 23 of the other main muscle 22 on the inner peripheral side. . As shown in FIG. 1, the threaded joint 31 is preliminarily screwed to the male threaded portion 23 of one of the main bars 12 or the other main bar 22 (the other main bar 22 in this embodiment).

  And in order to join between a pair of adjacent PC beam members 10 and 20 by the joining structure 1 having the above-described configuration, first, as shown in FIG. The beam member 20 is relatively moved in the vertical direction so that the joint end surface 15 of one PC beam member 10 and the joint end surface 25 of the other PC beam member 20 are aligned in the vertical direction.

  Next, as shown in FIG. 4, the threaded joint 31 screwed to the male thread portion 23 of the other main muscle 22 is screwed along the other main muscle 22, and the male thread portion 13 of the one main muscle 12. The threaded joint 31 is fitted on the outside of the male threaded portions 13 and 23, and the male threaded parts 13 and 23 are joined together via the threaded joint 31. In this case, the threaded joint 31 is screwed to the outside of the male screw portions 13 and 23 so that the front end surfaces of the male screw portions 13 and 23 are in close contact with each other in the longitudinal direction.

  In this case, a filler (not shown) such as resin or grout is filled between the inner peripheral surface of the female threaded portion 32 of the threaded joint 31 and the male threaded portions 13 and 23 as necessary, and is threaded. A gap between the inner peripheral surface of the female screw portion 32 of the joint 31 and the peripheral surfaces of both male screw portions 13 and 23 is filled.

  Next, as shown in FIG. 5, the concrete 35 is filled into the notches 14 and 24 of both the PC beam members 10 and 20 by spraying or the like, and the joint portions of both main bars 12 and 22 are embedded in the concrete 35. Then, the one end portions of both main muscles 12 and 22 are held in a joined state via the joining means 30. Further, if necessary, a grout is filled between the joint end faces 15 and 25 of the PC beam members 10 and 20, and joint treatment 33 is performed between the joint end faces 15 and 25.

  In this way, by joining the one end of one main bar 12 and one end of the other main bar 22 via the threaded joint 31, one adjacent PC beam member 10 and the other PC beam member are joined. 20 can be joined together.

  In the above case, a sleeve-type joint is used as the joining means 30 instead of the screw-type joint 31, and the sleeve-type joint is fitted on the outer side of one end of one main bar 12 and one end of the other main bar 22. Thus, one end of one main muscle 12 and one end of the other main muscle 22 may be joined together, or other known joints may be used to join between one end of both main muscles 12 and 22. Also good.

  In the joint structure 1 according to this embodiment configured as described above, the joint end faces 15 and 25 of the one PC beam member 10 and the other PC beam member 20 are aligned with each other in one notch portion 14. Both PC beam members are formed by integrally joining one end portion of one main bar 12 located at one end and one end portion of the other main bar 22 located in the other cutout portion 24 via a joining means 30. The joint end surfaces 15 and 25 of 10 and 20 can be joined together.

  Accordingly, since it is not necessary to place concrete at the joint between the PC beam members 10 and 20 at the site, support for supporting the PC beam members 10 and 20 becomes unnecessary, and both the PC beam members 10 and 20 are not required. , 20 can be applied to the lower part and the upper part of the PC beam members 10, 20 in succession to the joint between the two, and the construction period can be shortened.

 Moreover, since it is not necessary to cast concrete in the joint part between both the PC beam members 10 and 20, rebar construction and formwork can be reduced, and this can also shorten the construction period.

  Further, the joining end face 15 of one PC beam member 10 and the joining end face 25 of the other PC beam member 20 are combined, and one end of one main bar 12 and one end of the other main bar 22 are joined by the joining means 30. Therefore, there is no need for a wide movement space for moving both the PC beam members 10 and 20 in the horizontal direction, and the order of installation is not complicated.

  6 to 9 show a second embodiment of the joining structure and joining method according to the present invention. FIG. 6 shows a state before joining one PC beam member and the other PC beam member. FIG. 7 is an explanatory diagram showing a state after joining one PC beam member and the other PC beam member, FIG. 8 is an explanatory diagram showing a state in which concrete is filled in the notch, and FIG. 9 is one PC beam. It is explanatory drawing which shows the state which laid concrete on the upper part of a member and the other PC beam member.

  That is, this joining structure 1 is applied to joining between the bracket 41 connected to the column 40 and the PC beam member 43 joined thereto, and the other configuration is the first embodiment. It is the same as that shown in.

That is, in this embodiment, the bracket 41 is one PC beam member 10, the PC beam member 43 joined thereto is the other PC beam member 20, and one PC beam member 10 and the other PC beam member 20 are These are joined by the joining means 30.
Hereinafter, the joining method will be specifically described.

  First, as shown in FIG. 6, a threaded joint 31 is screwed in advance to a male threaded portion 13 at one end of one main bar 12 of one PC beam member 10, and the other PC beam member 20 is attached by a crane or the like. The joint end face 25 of the other PC beam member 20 and the joint end face 15 of the one PC beam member 10 are aligned in the up-down direction by moving in the vertical direction, and one main bar 12 of the one PC beam member 10 and the other PC beam The axis of the other main reinforcement 22 of the beam member 20 is matched.

  Next, as shown in FIG. 7, the threaded joint 31 is screwed in the direction of the other PC beam member 20, and the external thread of the other main bar 22 of the other PC beam member 20 is moved to the female thread portion 32 of the threaded joint 31. The first main bar 12 and the other main bar 22 are integrally joined to each other via a threaded joint 31.

  In this case, a filler made of resin, grout or the like is filled between the inner surface of the female threaded portion 32 of the threaded joint 31 and the male threaded portions 13 and 23 of the main reinforcing bars 12 and 22 as necessary, and a gap between the two May be filled.

  Next, as shown in FIG. 8, concrete 35 is filled into one notch portion 14 of one PC beam member 10 and the other notch portion 24 of the other PC beam member 20 by spraying or the like. In this way, the adjacent one of the PC beam members 10 and the other PC beam member 20 can be integrally joined.

  And as shown in FIG. 9, the upper end reinforcement 44 is arranged in both PC beam members 10, and the concrete 35 for slabs is laid.

  Even in the joint structure 1 according to this embodiment configured as described above, the joint end surface of one PC beam member 10 and the other PC beam member 20 is the same as that shown in the first embodiment. 15 and 25, the joining means 30 joins one end of one main muscle 12 located in one notch 14 and one end of the other main muscle 22 located in the other notch 24. By joining together via a pair, the adjacent pair of PC beam members 10 and 20 can be joined together.

  Accordingly, since it is not necessary to place concrete at the joint between the PC beam members 10 and 20 at the site, support for supporting the PC beam members 10 and 20 becomes unnecessary, and both the PC beam members 10 and 20 are not required. , 20 can be applied to the lower part and the upper part of the PC beam members 10, 20 in succession to the joint between the two, and the construction period can be shortened.

 Moreover, since it is not necessary to cast concrete in the joint part between both the PC beam members 10 and 20, rebar construction and formwork can be reduced, and this can also shorten the construction period.

  Further, the joining end face 15 of one PC beam member 10 and the joining end face 25 of the other PC beam member 20 are combined, and one end of one main bar 12 and one end of the other main bar 22 are joined by the joining means 30. Therefore, there is no need for a wide movement space for moving both the PC beam members 10 and 20 in the horizontal direction, and the order of installation is not complicated.

  In this embodiment, the star wrap 26 is provided in the central portion excluding both ends of the beam main body 21 of the other PC beam member 20, but both ends are similar to those shown in the first embodiment. The star wrap 26 may be provided on the entire beam body 21 including the portion.

  In each of the above-described embodiments, the joint structure 1 according to the present invention is applied to the joining of the main bars 12 and 22 (lower end bars), but may be applied to the main bars (upper end bars). Of course, the same effects can be obtained.

It is the front view which showed 1st Embodiment of the junction structure by this invention, Comprising: It is explanatory drawing which showed the state before joining of one PC beam member and the other PC beam member. It is a side view of one PC beam member of FIG. It is a side view of the other PC beam member of FIG. It is explanatory drawing which showed the state after joining of one PC beam member and the other PC beam member. It is explanatory drawing which showed the state which laid concrete in the notch part of one PC beam member and the other PC beam member. It is the front view which showed 2nd Embodiment of the junction structure by this invention, Comprising: It is explanatory drawing which showed the state before joining of one PC beam member and the other PC beam member. It is explanatory drawing which showed the state after joining of one PC beam member and the other PC beam member. It is explanatory drawing which showed the state which laid concrete in the notch part of one PC beam member and the other PC beam member. It is explanatory drawing which showed the state which laid concrete on the upper part of one PC beam member and the other PC beam member. It is explanatory drawing which showed an example of the conventional joining structure, Comprising: It is explanatory drawing which showed the state which has arrange | positioned one PC beam member and the other PC beam member in the predetermined position. It is explanatory drawing which showed the state which laid concrete between one PC beam member of FIG. 10, and the other PC beam member. It is explanatory drawing which showed the other example of the conventional joining structure.

Explanation of symbols

1 Junction structure
10, 50 One reinforced concrete member (one PC beam member)
DESCRIPTION OF SYMBOLS 11, 21 Beam main body 12, 52 One main reinforcement 13, 23 Male thread part 14 One notch part 15, 56 Joint end surface 16, 26 Star wrap 20, 60 The other reinforced concrete member (the other PC beam member)
22, 62 The other main reinforcement 24 The other notch 25, 66 Joining end face 30 Joining means 31 Screw joint 32 Female thread 33 Joint treatment 35 Concrete 40 Column 41 Bracket 43 PC beam member 44 Upper joint 63 Joint for jointing

Claims (7)

A joining structure for joining between a pair of adjacent reinforced concrete members,
One of the reinforcing bars embedded in the one reinforced concrete member provided at the joint end of the one reinforced concrete member, at least one notch portion opened at the joint end face side, and one end projecting into the one notch portion; The other reinforced concrete member is provided at a portion corresponding to the one cutout portion of the joint end portion of the other reinforced concrete member, and the other cutout portion having at least the joint end face side opened, and the other end projecting into the other cutout portion A joining structure comprising: the other main reinforcement embedded in the reinforced concrete member; and a joining means for joining the one main reinforcement and the other main reinforcement.   The joining means includes: a male screw portion provided at one end portion of the one main reinforcing rod; a male screw portion provided at one end portion of the other main reinforcing rod; and a screw-type joint having a female screw portion for screwing both the male screw portions. The joint structure according to claim 1, wherein:   The joining structure according to claim 1, wherein the joining means includes a sleeve-type joint that fits one end of the one main reinforcing bar and one end of the other main reinforcing bar.   The joint structure according to claim 2 or 3, wherein a filler made of resin, grout or the like is filled between the joint and one end of the both main bars.   The joint according to any one of claims 1 to 4, wherein grout or concrete is filled in the notches in a state in which the one main reinforcing bar and the other main reinforcing bar are bonded through the bonding means. Construction.   The joint according to any one of claims 1 to 5, wherein a joint treatment is performed between both joint end faces by filling grout between joint end faces of the one reinforced concrete member and the other reinforced concrete member. Construction. A joining method for joining between a pair of adjacent reinforced concrete members,
In the joint end of the one reinforced concrete member, at least one notch portion opened on the joint end face side is provided, and one end portion of one main reinforcing rod embedded in the one reinforced concrete member is protruded into the one notch portion, Further, at the portion corresponding to the one notch portion of the joint end portion of the other reinforced concrete member, at least the other notch portion opened at the joint end face side is provided, and embedded in the other reinforced concrete member in the other notch portion One end portion of the other main muscle is protruded, and one end portion of the one main muscle and one end portion of the other main muscle are joined together by joining means in the notches.

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