JPH07217079A - Reinforcing bar joint for reinforced concrete structure - Google Patents

Abstract

PURPOSE:To improve the strength of a reinforcing bar joint as well as to simplify the constitution from both the finishing and operational points of view. CONSTITUTION:In a vertical reinforcing joint for securing reinforcing bar joints progressing in parallel with each other, it consists of an upper vertical reinforcing joint 1 and a lower vertical reinforcing joint 11, and these upper and lower vertical reinforcing joints are equipped with a body 2 for being attached to two reinforcing bars A and B and a web 3, projecting inward the body, for engaging with both ribs (a) and (b) of these reinforcing bars A and B, respectively. In addition, they are equipped with each air vent groove 8 adjoining to this web, and also equipped with a tapped hole 5 and/or bracket or projection and a hook for connecting both these upper and lower reinforcing joints 1 and 11, and in this constitution, both these vertical reinforcing joints are connected together by clamping between a screw 9 and a nut 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reinforced joint for a reinforced concrete structure, and more particularly to a longitudinal joint, a transverse joint and a column joint for fixing mutually crossed or parallel reinforcing bars. It is about.

[0002]

2. Description of the Related Art In a conventional ordinary ordinary reinforced concrete building, the diameter of the reinforcing bars crossing each other is about 0.8 m.
There are known a method of binding by binding with an iron bundle wire made of m iron wire, and a method of joining intersecting reinforcing bars by electric welding. However, in this first method, the steel rods were only tied up, so they could not be completely fixed to each other, and when they were tied up, the steel rods were misaligned and when concrete was poured in, the steel bars were misaligned. Had a drawback that its strength was significantly weakened, and that it caused cracking of concrete.

A second method for fixing rebars by electric welding
In the method of (1), since the reinforcing bar itself contains a considerable amount of steel material, the material of the welded part is changed by welding and the reinforcing bar becomes brittle, so that the strength of the building is considerably reduced.

Furthermore, in recent years, in the construction of concrete structures, consideration has been given in advance to the time of dismantling the structure. It is known that a high current is applied to the reinforcing bar of an existing reinforced concrete building to generate resistance heat in the reinforcing bar and cause destruction from inside the concrete, facilitating dismantling. However, the above-mentioned method of binding with the iron wire does not cause the intended breakage at the joint when a high current is applied. The reason is that the iron wire bundles melt before the joints are destroyed.

In order to improve such an ordinary conventional technique, the inventor of the present invention disclosed in Japanese Patent Application Laid-Open No. 63-603 related to the prior application of the present application.
In JP-A-51, a cylindrical metal fitting body having a plurality of notched slits having a width sufficient to accommodate intersecting rebars, and a partial arc shape left by providing the notched slits and each of the rebars We proposed a rebar joint fitting consisting of a leg retaining ring that clamps a leg extending from the outside in a direction that forms a right angle to the outside, and a rebar fixing screw that engages an internal screw provided inside the leg.

According to the present invention, the drawbacks of the two conventional methods mentioned at the beginning, that is, the defects such as the displacement of the reinforcing bars and the reduction of the strength of the building, are avoided. In addition, it is convenient for internal destruction of concrete because it does not melt easily even when a high current is passed when it is necessary to dismantle the building. However, this reinforcing bar joint fitting is extremely preferable in function as a whole as compared with the conventional one, but has a drawback that its structure is complicated.

[0007]

The object of the invention is to increase the strength of a rebar joint of the kind mentioned at the outset and to simplify its construction in terms of processing and operation.

[0008]

This object is achieved according to the invention by the measures specified in the subclaims.

[0009]

Embodiments of the present invention will now be described with reference to the drawings. 1, 2 and 3 show a first embodiment of a longitudinal joint for parallel bars according to the invention.

Two reinforcing bars A arranged parallel to each other
The vertical bar joints shown for connecting B and B are composed of a vertical bar joint upper 1 and a vertical bar joint lower 11, and two reinforcing bars A and B are longitudinally connected to the reinforcing bar A and the reinforcing bar B, respectively. Inwardly projecting webs 3 and 13 provided on the upper and lower longitudinal joints 1 and 11 engage, and the upper and lower longitudinal joints 11 and 11
Are connected to each other by tightening screws and nuts. Such a basic configuration is common to other embodiments of the vertical joint. The plate thickness of the vertical joint is, for example, 2 to 3
can be in mm.

The vertical bar joint top 1 has two continuous semicircular main bodies 2 for holding the reinforcing bars, and the webs 3 projecting inwardly on the vertical bar joint top 1 in the range of both longitudinal ends of the main body. Are formed. The web 3 can be formed by extrusion by pressing. A bracket 4 is integrally formed with the main body 2 on one side of the main body 2. The bracket 4 is bent at a right angle to the bracket 4 so that the bracket 4 is positioned to face each other at regular intervals. A receptacle 4'is formed, and each receptacle 4'is provided with a screw hole 5. Similarly, a semicircular bracket 6 is integrally formed with the main body 2 on the other side of the main body 2, and the bracket 6 is provided with a screw hole 7.
The air vent groove 8 at the center of the main body 2 is for discharging the air remaining in the gap between the reinforcing bars A and B when the upper vertical joint 1 and the lower vertical joint 11 are joined.

The lower longitudinal joint 11 also has two continuous semicircular main bodies 12 for holding the reinforcing bars, and the webs 13 projecting inwardly from the lower longitudinal joint 11 in the range of both longitudinal ends of the main body. Are formed. The web 13 can be formed by extrusion by pressing. A bracket 14 is formed integrally with the main body 12 on one side of the main body 12, and the bracket 14 has two receivers 4'of the vertical joints 1 so as to sandwich the two receivers 4'from the outside. Two receivers 14 'are formed by bending the bracket 14 at a right angle at intervals equal to the distance. Both receivers 14' have screw holes 5 for the receivers 4'on the longitudinal joints 1, respectively.
Corresponding to the screw hole 15 is provided. On the other side of the body 12, a semi-circular bracket 16 is also provided.
And the bracket 16 is provided with a screw hole 17 corresponding to the screw hole 7 of the bracket 6 on the vertical joint 1. The air vent groove 18 at the center of the main body 12 is for discharging the air remaining in the space between the reinforcing bars A and B when the upper vertical joint 1 and the lower vertical joint 11 are joined.

The screw 9 is a screw hole 5 on the longitudinal joint 1.
And through the screw hole 15 in the lower vertical joint 11, and through the screw hole 7 in the upper vertical joint 1 and the screw hole 17 in the lower vertical joint 11 respectively. The longitudinal joints 1 and 11 are connected. At that time, only one of the screws 9 is first inserted into the screw hole to loosen the tightening of the nut 10, and the other 2
When the two screws 9 are not inserted into the screw holes, the upper vertical joint 1 and the lower vertical joint 11 can be opened in a hinge shape around the screw 9 and the nut 10, so that the reinforcing bars A and B can be opened. It becomes easy to install. In addition to tightening with the above-mentioned screws, the vertical bar joint upper 1 and the vertical bar joint lower 11 have a bracket 6 on the vertical bar joint 1 and a corresponding bracket 16 on the vertical bar joint 11 for increasing the bonding strength. It can also be welded at a point P (Fig. 1) in between. This welding is the same in the other embodiments of the parallel type longitudinal joint.

A second embodiment of the longitudinal joint is described in FIGS. 4, 5 and 6. Vertical muscle joint top 21
Has two continuous semi-circular main bodies 2 for holding the reinforcing bars, and the vertical joints 2 are provided in the range of both longitudinal ends of the main body.
A web 23 is formed so as to project inwardly of 1. The web 23 can be formed by extrusion by pressing. Brackets 24 are integrally formed with the main body 22 on both sides of the main body 22, and the bracket 24 has screw holes 25 at one end of the bracket 24. The other end of the bracket 24 cooperates with a hook portion 36 of the vertical joint bottom 31 which will be described later. A screw hole 27 is provided adjacent to the web 23 of the present invention 22, and a screw 29 is screwed into the screw hole 27. The screw 29 is tightened between the ribs a of the reinforcing bars A and B and the ribs. b
It is struck between and helps lock the rebar. The air vent groove 28 in the center of the main body 22 is for discharging the air remaining in the space between the reinforcing bars A and B when the upper vertical joint 21 and the lower vertical joint 31 are joined.

The lower vertical joint 31 also has two continuous semicircular main bodies 32 for holding the reinforcing bars, and the webs 33 projecting inwardly from the lower vertical joint 31 in the range of both longitudinal ends of the main body. Are formed. The web 33 can be formed by extrusion by pressing. A bracket 34 is integrally formed with the main body 32 on one side of the main body 32, and the bracket 34 corresponds to the screw holes 25 provided in the bracket 24 of the vertical joint web 21 at one end of the bracket 34, respectively. A screw hole 35 is provided. The other end of the bracket 34 cooperates with the corresponding end of the bracket 24 of the vertical joint web 21 to cooperate with the vertical joint web 21 and the vertical joint 31.
It has a hook 36 for engaging with. Invention 32
A screw hole 37 is provided adjacent to the web 23.
A screw 29 is screwed into this screw hole 37, and the screw 29 is abutted between the ribs a of the reinforcing bars A and B and between the ribs b in a tightened state to help lock the reinforcing bars. Body 32
The air vent groove 38 at the center of the is for discharging the air remaining in the space between the reinforcing bars A and B when the upper vertical joint 21 and the lower vertical joint 31 are joined.

A screw 2 is provided on each side of the bodies 22 and 32.
9 is passed through the screw hole 15 in the upper vertical joint 31 and the screw hole 35 in the lower vertical joint 31, and by tightening the nut 30, both upper and lower vertical joints 21 and 3 are provided.
1s are combined. At this time, the bracket 2 on the vertical joint 21 without screwing into any of the screw holes.
By engaging one end of 4 and the hook 36 of the lower vertical joint 31 to open both vertical joints with the hook 36 as a fulcrum of the hinge, the vertical joint can be easily attached to the reinforcing bars A and B. Become. The connection between the bracket 24 and the hook 36 increases the connection strength of the reinforcing bar by the vertical joint.

FIGS. 7, 8 and 9 show a third embodiment of the vertical joint according to the present invention. The vertical bar joint upper part 41 has two continuous semi-circular main bodies 42 for holding the reinforcing bars, and the webs 43 projecting inwardly of the vertical bar joint upper part 41 are formed in the range of both longitudinal ends of the main body. ing. The web 43 can be formed by extrusion by pressing. Brackets 44 are integrally formed with the main body 42 on both sides of the main body 42, and screw holes 45 are provided at one end of the bracket 44, respectively. The other end of the bracket 44 is formed as a protrusion 44 ′, and the hook 5 under the vertical joint 51 is described below.
Work with 6. A screw hole 47 is provided adjacent to the web 43 of the present invention 42. This screw hole 47 has a screw 49
Is screwed in, and the screw 49 is abutted between the ribs a of the reinforcing bars A and B and between the ribs b in a tightened state to help lock the reinforcing bars. The air vent groove 48 at the center of the main body 42 is for discharging the air remaining in the space between the reinforcing bars A and B when the upper vertical joint 41 and the lower vertical joint 51 are joined.

The lower vertical joint 51 also has two continuous semicircular main bodies 52 for holding the reinforcing bars, and the webs 53 projecting inwardly of the lower vertical joint 51 in the range of both longitudinal ends of the main body. Are formed. The web 53 can be formed by extrusion by pressing. A bracket 54 is formed integrally with the main body 52 on one side of the main body 52, and a screw corresponding to a screw hole 45 provided in the bracket 44 of the vertical joint 41 is provided at one end of the bracket 54. A hole 55 is provided. The other end of the bracket 54 has a hook 56 for cooperating with the corresponding end of the bracket 44 on the upper vertical joint 41 to engage the upper vertical joint 41 and the lower vertical joint 51. Hook 56 is 41 on the vertical joint
The bracket 44 has a slit for engaging with the protrusion 44 '. A screw hole 57 is provided adjacent to the web 53 of the present invention 52. A screw 49 is screwed into the screw hole 57, and the screw 49 is abutted between the ribs a of the reinforcing bars A and B and between the ribs b in a tightened state to help lock the reinforcing bars. The air vent groove 58 at the center of the main body 52 is for discharging the air remaining in the space between the reinforcing bars A and B when the upper vertical joint 41 and the lower vertical joint 51 are joined.

A screw 4 is provided on each side of the bodies 42 and 52.
9 is passed through a screw hole 45 on the vertical bar joint 41 and a screw hole 55 on the vertical bar joint 51, and by tightening a nut 60, upper and lower vertical bar joints 41 and 5 respectively.
1s are combined. At that time, the bracket 4 on the vertical joint 41 without screwing into any of the screw holes.
To the reinforcing bars A and B of the vertical bar joint by engaging the protrusion 44 'at one end of 4 with the slit of the hook 56 under the vertical bar joint 51, and opening both vertical bar joints with each other using the hook 56 as the fulcrum of the hinge. It becomes easy to install.

FIG. 10 schematically shows another embodiment of the vertical joint of the present invention. The longitudinal joints consist of an upper longitudinal joint 59 and a lower longitudinal joint 60, most of which correspond to the embodiment according to FIGS. 4, 5 and 6, but for engaging the ribs of the rebar. The difference is that notches 59a and 60a (not shown) corresponding to the ribs are provided instead of the web.

FIGS. 11, 12 and 13 show a first embodiment of a transverse bar joint for crossed reinforcing bars according to the invention. The illustrated horizontal bar joint for connecting two reinforcing bars C and D arranged to intersect each other is composed of a horizontal bar joint upper 61 and a horizontal bar joint lower 71, and the two reinforcing bars C and D are respectively The web c and the web d of the reinforcing bar D are engaged with the inwardly projecting webs 63 and 73 provided on the horizontal joint 61 and the horizontal joint lower 71, and the vertical joints upper 61 and lower 71 are mutually connected. Are connected by tightening screws and nuts. Such a basic structure is common to other embodiments of the cross type longitudinal joint. The plate thickness of the transverse joint can be set to, for example, 2 to 3 mm.

The horizontal bar joint top 61 has two continuous semicircular main bodies 62 for holding the reinforcing bars C, and the webs 63 projecting inward from the horizontal bar joint top 61 are provided in the range of both longitudinal ends of the main body. Has been formed. The web 63 can be formed by extrusion by pressing.
A bracket 64 is formed integrally with the main body 62 on one side of the main body 62, a screw hole 65 is provided at one end of the bracket 64, and a bracket 64 is provided at the other end of the bracket 64 with respect to the bracket 64. Bent at a right angle to receive 64 '
And the receiving portion 64 'is provided with a screw hole 65'. On the other side of the main body 62, a semi-circular bracket 66 is also integrally formed with the main body 62, and a hook 76 'formed on the corresponding bracket 76 under the transverse joint 71 is engaged with the bracket 66. 2 to let
Rectangular openings 6 at intervals corresponding to the intervals of the two hooks 76 '.
7 is provided. Air vent groove 6 in the center of the body 62
Reference numeral 8 is for discharging the air remaining in the gap between the reinforcing bars C and D when connecting the upper horizontal joint 61 and the lower horizontal joint 71.

The horizontal bar joint bottom 71 has two continuous semi-circular main bodies 72 for holding the reinforcing bars D, and the webs 73 projecting inwardly of the horizontal bar joint bottom 71 are provided in the range of both longitudinal ends of the main body. Has been formed. The web 73 can be formed by extrusion by pressing.
A bracket 74 is formed integrally with the main body 72 on one side of the main body 72.
4 is provided with a receiver 74 'bent at a right angle,
4'is provided with a screw hole 75. Bracket 7
The other end of 4 is formed as a hook 74 ″. On the other side of the main body 72, a bracket 76 also extends integrally with the main body 72, and a screw hole 77 is formed at one end of the bracket and a hook 76 'is formed at the other end of the bracket 76. The distance between the hooks 74 ″ and 76 ′ is equal to the distance between the openings 67 of the bracket 66 on the transverse joint 61, and the upper joint 61 and the lower transverse joint 71 are located at two points, namely, the screw 69 and the nut 70. The tapered lock pin 79 shown in FIG. 11 is coupled by tightening and is pushed into the hook 67 below the horizontal joint 71 on the bracket 66 above the horizontal joint 61 and the tip of the lock pin 79 is above the web 63 ′ above the bracket 66. Then, the upper horizontal joint 61 and the lower horizontal joint 71 are completely locked. At that time, before the complete connection of the two transverse joints, the nuts 70 are loosely tightened on the screws 69, and the upper transverse joints 61 and the lower transverse joints 71 are pivotally opened by using the screws 69 as pivots of the hinges. It becomes easy to attach the rebars to the reinforcing bars C and D. The air vent groove 78 at the center of the main body 72 is for exhausting the air remaining in the space between the reinforcing bars C and D when the upper horizontal joint 61 and the lower horizontal joint 71 are joined. Upper horizontal joint 61 and lower horizontal joint 7
The other grooves 68 'and 78' of the body of 1 are also air vent grooves and function similarly to the air vent grooves 68,78. In addition to the tightening with the above-mentioned screws, the horizontal reinforcement joint upper 61 and the horizontal reinforcement joint lower 71 have a bracket 64 on the horizontal reinforcement joint 61 and a horizontal reinforcement joint lower 71 in order to increase the bonding strength.
Location Q between the corresponding brackets 74, 76 of the
It can also be welded in 1). This welding is the same in the other embodiments of the cross type vertical bar joint.

FIGS. 14, 15 and 16 show a second embodiment of a transverse joint for crossed rebars according to the invention. The horizontal bar joint top 81 has two continuous semicircular main bodies 82 for holding the reinforcing bars.
The webs 83 projecting inward from the horizontal stirrup joint 81 are formed in the range of both ends in the vertical direction. The web 83 can be formed by extrusion by pressing. Brackets 84 are integrally formed with the main body 82 on both sides of the main body 82, and each bracket 84 has a screw hole 85 at one end. The other end of the bracket 84 engages with a hook 96 formed by bending both ends of the bracket 94 on one side of the main body 92 of the horizontal joint 91 at right angles to the bracket 94. A screw hole 87 is provided adjacent to the web 83 of the main body 82. A screw 89 is screwed into the screw hole 87, and the screw 89 is abutted between the ribs c of the reinforcing bars C and D and between the ribs d in a tightened state to help lock the reinforcing bars. The air vent groove 88 at the center of the main body 82 is for discharging the air remaining in the space between the reinforcing bars C and D when the upper horizontal joint 81 and the lower horizontal joint 91 are connected. Another groove 88 'provided in the main body 82 is used as a concrete pouring hole.

The lower horizontal joint 91 also has two continuous semicircular main bodies 92 for holding the reinforcing bars, and the webs 93 projecting inward from the lower horizontal joint 91 are formed in the range of both longitudinal ends of the main body. Has been done. The web 93 can be formed by extrusion by pressing. Brackets 94 are integrally formed with the main body 92 on both sides of the main body 92, and the brackets 94 are hooks 9 for engaging with one end of the bracket 84 on the transverse joint 81.
Have six. The air vent groove 98 at the center of the main body 92 is for discharging the air remaining in the space between the reinforcing bars C and D when the upper horizontal joint 81 and the lower horizontal joint 91 are connected. Reference numeral 98 'is a concrete pouring hole.

The screw 89 is passed through a screw hole 85 on the transverse joint 81 and a screw hole 95 on the transverse joint lower 91, and the transverse joint web 81 and the transverse joint lower 91 are connected by tightening the screw 89 to the nut 90. To do.
Further, screws 89 are respectively screwed into the screw holes 87 of the upper transverse joint 81 and the screw holes 97 of the lower transverse joint 91, and by tightening the screws 89, the tips of the screws 89 engage with the ribs c and d of the reinforcing bars C and D. Lock the reinforcing bars C and D. At that time, one end of the bracket 84 above the horizontal joint 81 and the bottom 91 of the horizontal joint without screws are inserted.
Engages with the hook 96 of the bracket 84 of the
If you use the hinge as a fulcrum to open both transverse joints,
It becomes easy to attach the transverse joints to the reinforcing bars C and D.
The joint strength of the reinforcing bar by the transverse joint is increased by the connection by the bracket 84 and the hook 96.

FIGS. 17, 18 and 19 show a third embodiment of a transverse joint for crossed rebars according to the invention. The illustrated horizontal bar joint for connecting two reinforcing bars C and D arranged so as to intersect with each other is composed of a horizontal bar joint upper part 101 and a horizontal bar joint lower part 111, and the two reinforcing bar C and D are respectively connected to the reinforcing bar C. Web c
And the web d of the reinforcing bar D engage with the inwardly projecting webs 103 and 113 provided on the horizontal bar joint upper part 101 and the horizontal bar joint lower part 111, and the vertical bar joint upper part 101 and the lower bar part 111 are screwed to each other. And, it is connected by tightening the nut. Such a basic structure is common to other embodiments of the cross type longitudinal joint.

The horizontal bar joint top 101 has two continuous semi-circular main bodies 102 for holding the reinforcing bars, and the webs 103 projecting inward from the horizontal bar joint top 101 are formed in the range of both longitudinal ends of the main body. Has been done. Web 103
Can be formed by extrusion by pressing. A bracket 104 is formed integrally with the main body 102 on one side of the main body 102.
4 each have a screw hole 105 at one end, and the other end has a bracket 1 under a transverse joint 111 to be described later.
It has projections 104 'for engaging the slits of the 16 hooks 116'. Air vent groove 1 in the center of the main body 102
08 is horizontal joint 101 above and horizontal joint below 11
This is for exhausting the air remaining in the gap between the reinforcing bars C and D when they are combined with 1. 108 'is a concrete pouring hole.

The lower horizontal joint 111 also has two continuous semicircular main bodies 112 for holding the reinforcing bars, and the webs 113 projecting inward from the lower horizontal joint 111 are formed in the range of both longitudinal ends of the main body. Has been done. Web 113
Can be formed by extrusion by pressing. A bracket 114 is formed integrally with the main body 112 on one side of the main body 112, and screw holes 115 are provided at both ends of the bracket 114. On the other side of the main body 112, a bracket 116 having a slit extends integrally with the main body 112, and both ends of the bracket 116 are formed as hooks 116 '. Hook 11
6'is engaged with the protrusion 104 'of the bracket 104 on the transverse joint 101. The air vent groove 118 at the center of the main body 112 is for exhausting the air remaining in the space between the reinforcing bars C and D when the upper horizontal joint 101 and the lower horizontal joint 111 are joined. Another groove 108 'of the body 112 under the transverse joint 111 is a concrete pouring hole.

The screw 109 is a screw hole 105 above the transverse joint 101 and a screw hole 1 below the transverse joint 111.
15 and is fastened to the nut 110 so that both transverse joints are connected. At that time, before inserting the screw 109 into the screw hole, the bracket 10 on the transverse joint 101 is inserted.
By the engagement of the protrusion 104 ′ of No. 4 and the slit of the hook 116 ′ of the bracket 116 of the lower horizontal joint 111,
The horizontal joints can be easily attached to the reinforcing bars by pivoting and opening both horizontal joints using the hook as the fulcrum of the hinge. Further, a screw 109 is screwed into each of the screw hole 107 of the upper horizontal joint 101 and the screw hole 117 of the lower horizontal joint 111, and the tip of the screw 109 is engaged with the rib c of the reinforcing bar C and the rib d of the reinforcing bar D. Lock.
118 'is a concrete pouring hole.

FIG. 20 schematically shows a fourth embodiment of the transverse joint of the present invention. The transverse joint consists of a transverse joint upper 119 and a transverse joint lower 120, the majority of which corresponds to the embodiment according to FIGS. 14, 15 and 16, but instead of a web for engaging the ribs of the reinforcement. It is different in that it has notches 119a and 120a (not shown) corresponding to the ribs.

21, 22, and 23 show one rebar E
Is a fan-shaped joint as a rebar joint for connecting three rebars F extending laterally with respect to the axis at a predetermined angle, and the fan-shaped joint is a fan-shaped joint upper 121 and a fan-shaped joint. It consists of the lower joint 131. The means for connecting the fan-shaped joints 121 and 131 is basically the same as the means described in the embodiments of the longitudinal joint and the transverse joint, and therefore will not be described here.

24, 25 and 26 show one rebar E
With respect to the axis, there is a fan-shaped joint claw as a rebar joint for connecting three rebars F extending laterally at a predetermined angle, and the fan-shaped joint claw is a fan-shaped joint claw. It is composed of an attached upper part 141 and a fan-shaped joint attached lower part 151. Both fan-shaped joints 141 and 1
The connecting means 51 is basically the same as the means described for the embodiments of the vertical joint and the horizontal joint, and will not be described here.

FIGS. 27 (a), (b) and (c) show a reinforcing bar for a column structure, which is a column joint for connecting one straight reinforcing bar G and two bent reinforcing bars H to each other. 161
Indicates. The three joint bodies can be welded to each other except for the bracket part for tightening the bolts when connecting to the rebar. FIG. 27 (d) shows a column joint 171 for connecting two reinforcing bars orthogonal to each other. The two joint bodies can be welded to each other, except for the bracket part for tightening the bolts when connecting to the rebar. Such joints are also within the scope of the present invention, as are the longitudinal joints and transverse joints.

[0035]

According to the invention, a reinforcing bar joint of the type mentioned at the outset has an increased strength and a construction which is simpler in processing and operation. That is, according to the present invention, since the shape is simple, the processing man-hours are small, and the reinforcing bar engaging function is reliable and the vertical bar joint has high strength,
The reinforcing bars are strongly and reliably connected to each other by the transverse joints or column joints, so that the joints are not destroyed during or after the concrete is poured, and the operation of attaching the joints to the reinforcing bars and the screws are performed. And the nut tightening work becomes easy. The joint deformation strength or screw breaking strength of the longitudinal joint and the transverse joint according to the present invention is about 1500 to 1800 kg, which is about 23 times stronger than the conventional reinforcing bar binding strength of two or four wires.

[Brief description of drawings]

FIG. 1 is a perspective view showing a first embodiment of a parallel type longitudinal joint.

FIG. 2 is a diagram showing a vertical stirrup joint constituting the vertical stirrup joint according to FIG. 1, in which FIG.
(B) is the front view, and (c) is the side view.

FIG. 3 is a view showing a vertical joint underneath which constitutes the vertical joint according to FIG. 1, (a) is a plan view thereof,
(B) is the front view, and (c) is the side view.

FIG. 4 is a perspective view showing a second embodiment of a parallel type vertical bar joint, wherein (a) is a state after tightening the vertical bar joint to the reinforcing bar, and (b) is a vertical bar joint to the reinforcing bar. It is a figure which shows the state before combination of.

FIG. 5 is a diagram showing the vertical joints forming the vertical joint according to FIG. 4, in which (a) is a plan view thereof;
(B) is the front view, and (c) is the side view.

FIG. 6 is a view showing a vertical stirrup joint bottom that constitutes the vertical stirrup joint according to FIG. 4, in which (a) is a plan view thereof;
(B) is the front view, and (c) is the side view.

FIG. 7 is a perspective view showing a third embodiment of a parallel type vertical bar joint, (a) showing a state after tightening the vertical bar joint to the reinforcing bar, and (b) showing a vertical bar joint to the reinforcing bar. It is a figure which shows the state before combination of.

FIG. 8 is a diagram showing the vertical stirrup joint constituting the vertical stirrup joint according to FIG. 7, in which (a) is a plan view thereof;
(B) is the front view, and (c) is the side view.

FIG. 9 is a view showing a vertical joint underneath which constitutes the vertical joint according to FIG. 7, in which (a) is a plan view thereof;
(B) is the front view, and (c) is the side view.

FIG. 10 is a perspective view showing the outline of a fourth embodiment of the parallel type vertical stirrup joint.

FIG. 11 is a perspective view showing a first embodiment of a cross type transverse joint.

FIG. 12 is a diagram showing a horizontal stirrup joint constituting the horizontal stirrup joint according to FIG. 11, in which (a) is a plan view thereof;
(B) is the front view and (c) is the side view.

FIG. 13 is a view showing a lower part of a horizontal stirrup joint constituting the horizontal stirrup joint according to FIG. 11, (a) is a plan view thereof,
(B) is the front view and (c) is the side view.

FIG. 14 is a perspective view showing a second embodiment of a cross type horizontal bar joint, wherein (a) shows a state after tightening the vertical bar joint to the reinforcing bar, and (b) shows a vertical bar joint to the reinforcing bar. It is a figure which shows the state before a coupling | bonding.

FIG. 15 is a view showing a horizontal stirrup joint constituting the horizontal stirrup joint according to FIG. 14, in which (a) is a plan view thereof;
(B) is the front view and (c) is the side view.

FIG. 16 is a view showing the lower part of the horizontal stirrup joint constituting the horizontal stirrup joint according to FIG. 14, in which (a) is a plan view thereof;
(B) is the front view and (c) is the side view.

FIG. 17 is a perspective view showing a third embodiment of a cross type horizontal bar joint, (a) showing a state after tightening the vertical bar joint to the reinforcing bar, and (b) showing a vertical bar joint to the reinforcing bar. It is a figure which shows the state before a coupling | bonding.

FIG. 18 is a diagram showing a horizontal stirrup joint constituting the horizontal stirrup joint according to FIG. 17, in which (a) is a plan view thereof;
(B) is the front view and (c) is the side view.

FIG. 19 is a diagram showing the underside of a horizontal stirrup joint constituting the horizontal stirrup joint according to FIG. 17, (a) is a plan view thereof,
(B) is the front view and (c) is the side view.

FIG. 20 is a perspective view showing an outline of a fourth embodiment of a cross type horizontal joint.

FIG. 21 is a conceptual diagram showing a usage state of a fan-shaped joint configured as a column joint.

22 shows a fan-shaped joint of the fan-shaped joint shown in FIG. 21, (a) is a plan view thereof, (b) is a front view thereof, and (c) is a side view thereof.

23 is a bottom view of the fan joint of the fan joint shown in FIG. 21, in which (a) is a plan view thereof, (b) is a front view thereof, and (c) is a side view thereof.

FIG. 24 is a conceptual view showing a usage state with a fan-shaped joint claw configured as a column joint.

FIG. 25 shows the fan-joint claw top with the fan-shaped joint claw shown in FIG. 24, (a) is a plan view thereof, and (b) is a plan view thereof.
Is a front view thereof, and (c) is a side view thereof.

FIG. 26 shows a lower part with a fan-shaped joint claw having a fan-shaped joint claw shown in FIG. 24, (a) is a plan view thereof, and (b) is a plan view thereof.
Is a front view thereof, and (c) is a side view thereof.

FIG. 27 shows a usage state of another embodiment of the column joint, (a) is a perspective view thereof, (b) is a cross-sectional view thereof, and (c) is for connecting three reinforcing bars. FIG. 3A is a perspective view of the column joint of FIG. 3D, and FIG. 7D is a perspective view of the column joint for connecting two orthogonal reinforcing bars.

[Explanation of symbols]

 1 Vertical bar joint top 2 Main body 3 Web 4 Bracket 5 Screw hole 6 Bracket 7 Screw hole 8 Air vent groove 9 Screw 10 Nut 11 Vertical bar lower joint 12 Main body 13 Web 14 Bracket 15 Screw hole 16 Bracket 17 Screw hole 18 Air vent groove 21 Vertical joint upper 22 Main body 23 Web 24 Bracket 25 Screw hole 27 Screw hole 28 Air vent groove 29 Screw 30 Nut 31 Vertical bar lower joint 32 Main body 33 Web 34 Bracket 35 Screw hole 36 Hook 37 Screw hole 38 Air vent groove 41 Vertical joint top 42 Main body 43 Web 44 Bracket 44 'Protrusion 45 Screw hole 47 Screw hole 48 Air vent groove 49 Screw 50 Nut 51 Vertical joint bottom 52 Main body 53 Web 54 Bracket 55 Screw hole 56 Foot 57 screw hole 58 air vent groove 59 vertical bar joint upper 60 vertical bar joint lower 61 horizontal bar joint upper 62 main body 63 web 63 'web 64 bracket 64' receiver 65 screw hole 65 'screw hole 66 bracket 67 hook opening 68 air vent Groove 68 'Air bleed groove 69 Screw 70 Nut 71 Lower horizontal joint 72 Main body 73 Web 74 Bracket 74' Receiver 74 '' 'Hook 75 Screw hole 76 Bracket 76' Hook 77 Screw hole 78 Air bleed groove 81 Horizontal stirrup joint 82 Main body 83 Web 84 bracket 85 screw hole 87 screw hole 88 air vent groove 88 'concrete pouring hole 89 screw 90 nut 91 horizontal bar joint lower 92 main body 93 web 94 bracket 95 screw hole 96 hook 97 screw hole 98 air Groove 98 'Concrete pouring hole 101 Horizontal joint upper 102 Main body 103 Web 104 Bracket 104' Protrusion 105 Screw hole 107 Screw hole 108 Air vent groove 108 'Concrete pouring hole 109 Screw 110 Nut 111 Lower horizontal joint 112 Main body 113 Web 114 Bracket 115 Screw hole 116 Bracket 116 'Hook 117 Screw hole 118 Air bleed groove 118' Concrete pouring hole 119 Horizontal bar joint upper 120 Horizontal bar joint lower 121 Fan type joint upper 131 Fan type joint lower 141 Fan type joint with claw upper 151 Fan type Joint Lower 161 Joint for column 171 Joint for column 171 A Reinforcing bar B Reinforcing bar a Reinforcing bar A rib b Reinforcing bar B rib C Reinforcing bar D Reinforcing bar c Reinforcing bar C rib d Reinforcing bar D rib E Reinforcing bar F Reinforcing bar G Reinforcing bar H Reinforcing bar

Claims (6)

[Claims] 1. A vertical bar joint for fixing reinforcing bars that run parallel to each other, wherein a vertical bar joint (1;
21; 41; 59) and under the longitudinal joint (11; 31;
51; 60), and the upper and lower vertical joints are ribs (a, B) of the reinforcing bars (A, B) on the main body (2; 22; 42 and 12; 32; 52) for being attached to the reinforcing bars (A, B). ,
b) with inwardly projecting webs (3; 23; 43 and 13; 33; 53) for engaging with b) adjacent to the bleed groove (8; 28; 48 and 18; 3)
8; 58), and screw holes (5; 25; 45 and 1 for connecting the upper and lower vertical joints to each other).
5; 35; 55) and / or brackets or protrusions (2
4; 44 ') and hooks (36; 56), both longitudinal bar joints being screw (9; 29; 49) and nut (1
0; 30; 50), wherein the longitudinal joints are connected by tightening. 2. Screw holes (27; 37; 47;) for mounting screws which engage with the ribs (a, b) of the reinforcing bars (A, B).
57) is the body of the longitudinal joint (22; 32; 42;
52) The longitudinal joint according to claim 1, which is provided in 52). 3. The vertical joint according to claim 1, wherein the vertical joint is formed as a column joint (161, 171) for fixing a plurality of reinforcing bars (G, H) running parallel to each other. Muscle joint. 4. A transverse bar joint for fixing rebars intersecting each other, on a transverse bar joint (61;
81; 101; 119) and under the transverse joint (71; 9)
1; 111; 120), and the upper and lower vertical bar joints are main bodies (62; 8) for being attached to the reinforcing bars (C, D).
2; 102 and 72; 92; 112) with reinforcing bars (A, B)
Protruding webs (63; 83; 103 and 73; 93; 11) for engaging the ribs (a, b) of the
1), adjacent to which an air vent groove (68; 88;
108 and 78; 98; 118) for screw connection (6) above and below the transverse joints.
5; 85; 105 and 75; 95; 115) and / or brackets or projections (64; 84; 104 ') and hooks (74 ", 76';96; 116 '), both longitudinal joints being provided with screws ( 69; 89; 109) and nuts (70; 90; 120) by tightening. 5. Threaded holes (87, 107; 9) for mounting screws which engage the ribs (c, d) of the reinforcing bars (C, D).
7. Longitudinal joint according to claim 4, characterized in that 7, 117) are provided in the body (82; 102 and 92; 112) of the transverse joint. 6. A fan-shaped joint (121, 131) or a fan-shaped joint with claws (141, 151) for connecting a plurality of reinforcing bars (E, F) whose transverse joints intersect each other at an arbitrary angle. 5. Formed as
Alternatively, the transverse joint according to item 5.