JP3211145B2 - Rebar anchorage device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reinforcing bar joining device for joining and fixing main reinforcing bars of a beam at a joint between a column and a beam of a reinforced concrete structure.

[0002]

2. Description of the Related Art At the joint between a column and a beam of a reinforced concrete structure, the main reinforcing bars of the column and the beam cross each other, making it difficult to secure a position due to overcrowding of the reinforcing bar and complicating the rebar work. was there. In addition, over-consolidation of the rebar not only causes a problem in workability but also impairs the filling property of concrete, and as a result, there is a problem that the strength of the joint may be reduced. Further, when the main reinforcement of the beam passes through the column in both the X direction and the Y direction (through reinforcement), it is necessary to shift the height position of the reinforcing bar, which also affects the size of the concrete section.

In order to solve these problems, for example, an apparatus using a fixing ring of a reinforcing bar as shown in FIG. 18 has been devised. In the device shown in FIG. 18, a fixing ring 102 is disposed at a connection between a pillar 100 and a plurality of beams 101,
The main reinforcement 103 of the beam 101 is screwed into the fixing ring 102 for fixing. FIG. 19 is an explanatory diagram of a method of installing the main bar 103 of the invention shown in FIG. FIG.
As shown in FIG. 9, in this method, when arranging a reinforcing bar extending over the entire length of the beam between two fixing rings, the reinforcing bar is inserted into a screw hole or an insertion hole of one fixing ring 102, and then is inserted into the other fixing ring 102. Insert it into the screw hole or insertion hole.

[0004]

Indeed, according to the invention shown in FIG. 18, it is possible to solve the problem that the main reinforcing bars of the columns and beams cross each other, and it is difficult to secure the position due to the overcrowding of the reinforcing bars. In addition, the problem relating to the problem of the concrete filling property is solved. However, in terms of workability, it is necessary to insert a large-diameter heavy main reinforcing bar into one ring at the work site, and then screw (or insert and fix with a nut) the other end of the reinforcing bar into the other ring. Yes, the burden on the operator is extremely large. In addition, it is inevitable that the work is duplicated, the material cost and the construction time are increased, and the cost is increased.

The present invention has been made to solve such a problem, and an object of the present invention is to provide a fixing device for a reinforcing bar which facilitates the work of arranging the reinforcing bar.

[0006]

SUMMARY OF THE INVENTION According to the present invention, there is provided a rebar anchoring device for anchoring inside a main bar of a column at a connection between the column and a beam.
A ring is arranged, and the tip of the main bar of the beam is attached to the fixing ring.
Into the thread formed at the tip of the main bar.
Screw the nut from inside and outside of the ring
By holding the fixing ring by the beam
Fixing the main reinforcement to the pillar side,
A plurality of rings that are detachably overlapped with each other
Formed at the time of superposition on the superimposed surface of the plurality of rings.
A groove for forming an insertion hole for the main reinforcement of the beam is provided,
Each of the nuts has an insertion hole through which the tip of the main muscle is inserted.
And at least one between the fixing ring and the fixing ring.
Engage with the plurality of rings when tightening the nut
To join these rings together
It has a step .

[0007] The fixing ring is inserted with the main beam of the beam.
Inflate the main muscle insertion section, and
It is formed thin.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 FIG. FIG. 1 is a plan view of Embodiment 1 of the present invention,
FIG. 2 is a sectional view taken along the line AA in FIG. 1, and FIG. 3 is an exploded view of FIG. In the drawing, reference numeral 1 denotes a substantially octagonal fixing ring, which has a structure in which two upper rings 1a and lower rings 1b having the same shape are stacked as shown in FIG. 4 for skipping one of the upper ring 1a and the lower ring 1b
A groove 3 into which the screw reinforcing bar 2 is inserted as shown in FIG.
a and 3b are provided respectively. Two grooves 3a, 3b are provided on each side, and are formed in a semicircular shape along the screw reinforcing bar 2 to be inserted. 4 is a screw rebar 2
, Which are disposed inside and outside the fixing ring 1 to integrate the upper ring 1a and the lower ring 1b.

FIG. 4 is a front view of the presser washer 4. As shown in FIG. 4, the presser washer 4 has a rectangular shape, and a hole 4c through which the screw reinforcing bar 2 is inserted is formed at the center thereof. Upper and lower ends of the presser washer 4 are bent at right angles in the same direction to form engaging portions 4a and 4b which engage with the upper ring 1a and the lower ring 1b. Reference numeral 5 denotes a pair of nuts that are screwed into the screw reinforcing bar 2 and press the presser washers 4 toward the fixing ring 1.

Referring to FIGS. 1 to 4, a method for fixing a reinforcing bar using the fixing device for reinforcing bars according to the first embodiment will be described.
First, the lower ring 1b is set in a pillar. In this case, the beam is set not only on the adjacent pillar but also on the beam mounting position on each pillar on the same floor. After the lower ring 1b is set, the screw reinforcing bar 2 of the beam to which the pair of presser washers 4 and the pair of nuts 5 are attached in advance is placed on the groove 3b of the lower ring 1b. At this time, the pair of holding washers 4 and the pair of nuts 5 need to be separated from the thickness of the fixing ring 1. When the threaded reinforcing bar 2 of the beam is placed, the upper ring 1a is overlaid on each lower ring 1b. Then, after the superimposed upper ring 1a is brought into close contact with the lower ring 1b, the engaging portions 4a and 4b of the pair of presser washers 4 previously attached to the screw reinforcing bar 2 are engaged with the fixing ring 1, and the pair of fixing rings 1 are engaged. Tighten with nut 5. Similarly, the screw reinforcement in each direction is fixed to the fixing ring to complete the operation.

As described above, according to the present embodiment, the bar arrangement work can be a simple unloading work. Further, since the fixing of the screw reinforcing bar 2 and the integration of the upper ring 1a and the lower ring 1b by the holding washer 4 can be performed only by the tightening operation of the nut 5, the workability is extremely good. Further, since the fixing ring 1 is divided into upper and lower parts, the fixing ring 1 is light in weight and easy to carry and position in the pillar. In the fixing ring 1 of the present embodiment, since the presser washer 4 is tightened from both sides with the nuts 5, the upper ring 1a and the lower ring 1b are surely integrated, and have a structure capable of sufficiently transmitting the force from the screw reinforcing bar 2. Has become. In particular, since the concrete is filled and solidified in the pillar, no loosening occurs.

Embodiment 2 FIG. FIG. 5 is a sectional view of the second embodiment. The plan view of the present embodiment is exactly the same as FIG. 1, and FIG. 5 corresponds to a cross-sectional view taken along line AA in FIG. In the figure, the same parts as those in FIG. 1 are denoted by the same reference numerals. In the present embodiment, the fixing ring includes three rings, an upper ring 10a, a middle ring 10b, and a lower ring 10c. In the present embodiment, the screw rebars 2 are of a type that is fixed to each side of the fixing ring 10 four by four. for that reason,
Four insertion holes for the screw reinforcing bar 2 are provided on each side of the fixing ring 10, and the upper ring 10 a and the middle ring 10 are provided.
b, the middle ring 10b and the lower ring 10c
Are arranged between them.

In this embodiment, the fixing ring 10
Is divided into three, so the thickness of each ring can be reduced,
Since the weight of each ring can be reduced, the efficiency of the fixing work of the reinforcing bar can be further improved.

Embodiment 3 6 is a plan view of Embodiment 3 of the present invention, FIG. 7 is a sectional view taken along the line AA in FIG. 6, and FIG. 8 is an exploded view of FIG. In the figure, the same parts as those in FIG. 1 are denoted by the same reference numerals. Reference numeral 15 denotes a substantially octagonal fixing ring, which has a structure in which two upper rings 15a and two lower rings 15b having the same shape are stacked as shown in FIG. The fixing ring 15 is a octagonal 4
Reinforcing bar insertion portions 16a, 16b into which screw reinforcing bar 2 is inserted
have. Two reinforcing bar insertion portions 16a and 16b are provided on each side, and the surface is formed in an arc shape along the screw reinforcing bar 2 to be inserted. Reference numeral 17 denotes a presser washer inserted through the screw reinforcing bar 2, which is disposed inside and outside the fixing ring 15, and integrates the upper ring 15a and the lower ring 15b.

FIG. 9 is a front view of the presser washer 17. The presser washer 17 has a shape in which both sides of a circle are cut linearly. In the center of the hole is a hole 1 through which a screw rebar is inserted.
7c is provided. At the upper and lower edges of one surface of the presser washer 17, there are provided engaging portions 17 a and 17 b which engage with the surface of the reinforcing bar insertion portion 16 of the fixing ring 15.

According to the present embodiment, the following effects can be obtained in addition to the effects of the first embodiment. Fixing ring 15
In the rebar insertion portion 16a through which the screw rebar 2 is inserted,
The upper ring 15a and the lower ring 15b can be reduced in weight because the other portions are made thinner by expanding the 16b. Further, since the engaging portions 17a and 17b of the presser washer 17 are formed in an arc shape, rigidity is increased, and integration of the upper ring 15a and the lower ring 15b can be reliably performed.

Embodiment 4 FIG. 10 is an enlarged view showing a part of Embodiment 4 of the present invention. FIG. 11 shows FIG.
0 is a sectional view taken along the line AA, and FIG. 12 is a sectional view taken along the line BB. In the figure, the same parts (corresponding parts) as those in FIG. Embodiment 4
Is a case where the thickness of the fixing ring 20 is larger than the thickness of the screw reinforcing bar 2. Fixing ring 20 of this embodiment
Is basically the same octagon as that shown in FIG. In the present embodiment, circular protrusions 23 are provided on the inner and outer sides of the rebar insertion portions 21a and 21b of the fixing ring 20 to which a presser washer 22 described later is fitted. FIG.
3 is a front view of the presser washer 22 according to the present embodiment, and FIG. 14 is a cross-sectional view taken along line CC in FIG. FIG.
As shown in FIG. 3 and FIG. 14, the presser washer 22 is
And a circular hole 22c through which the screw reinforcing bar 2 is inserted is provided at the center of the frame.

In the present embodiment, the upper ring 20
When integrating the lower ring 20b with the upper ring 20a,
a and the convex portion 23 provided on the lower ring 20b,
2 is fitted. According to this embodiment, since the frame portion 22a is formed around the entire circumference of the presser washer 22,
The rigidity of the presser washer 22 is high, and the upper ring 20a and the lower ring 20b can be more reliably integrated.

Embodiment 5 15 is a plan view of the fifth embodiment of the present invention, FIG. 16 is a sectional view taken along line AA in FIG. 15, and FIG. 17 is a sectional view taken along line BB in FIG. 15 to 17, the same parts (corresponding parts) as those in FIG. 6 or FIG. 10 are denoted by the same reference numerals. In this embodiment, a plurality of ribs 25a are provided inside the fixing ring 25. According to the fifth embodiment, since the rigidity can be increased while the thickness of the fixing ring 25 is reduced, the fixing can be performed even when the number of the screw rebars 2 to be fixed is large or when the diameter of the screw rebar 2 is large. The weight of the ring can be reduced.

[0020]

As is evident from the foregoing description, in the present invention, the
Fix the fixing ring with a plurality of phosphorus
Formed on the overlapping surface of these multiple rings
A groove is formed to form an insertion hole for the main reinforcement of the beam, and
It has an insertion hole through which the tip of the main bar of the beam is inserted.
Located at least one between the nut and the fuser ring.
And engages with the plurality of rings when tightening the nut.
Joints to join these multiple rings together
With the means , the following effects can be obtained. In the assembling work on site, even if the main reinforcement of the beam is heavy and long, the operation of positioning the main reinforcement of the beam on the fixing ring can be performed only by unloading from above, and the construction is extremely easy. In addition, since the fixing ring is divided into a plurality of parts, each ring is light in weight and easy to carry and install. further,
When the fixing ring is divided into two parts, the same shape can be used for the upper and lower parts, so that the type of the fixing ring can be minimized. In addition, means for fixing and connecting the beam main reinforcement
The integration of multiple rings by the nut tightening work
Workability is very good.

The main ring of the beam is inserted into the fixing ring.
Inflate the main muscle insertion section, and
Since the thickness of the fixing ring is reduced, the weight of the fixing ring can be reduced.

[Brief description of the drawings]

FIG. 1 is a plan view of a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA in FIG.

FIG. 3 is an exploded view of FIG. 2;

4 is a front view of the presser washer 4. FIG.

FIG. 5 is an explanatory diagram of Embodiment 2 of the present invention.

FIG. 6 is a plan view of a third embodiment of the present invention.

FIG. 7 is a sectional view taken along the line AA in FIG. 6;

FIG. 8 is an exploded view of FIG. 7;

FIG. 9 is a front view of the presser washer 17. FIG.

FIG. 10 is an explanatory diagram of Embodiment 4 of the present invention.

11 is a sectional view taken along the line AA in FIG.

12 is a sectional view taken along the line BB in FIG.

13 is a front view of the presser washer 22. FIG.

FIG. 14 is a sectional view taken along the line CC in FIG. 13;

FIG. 15 is a plan view of a fifth embodiment of the present invention.

16 is a sectional view taken along the line AA in FIG.

17 is a sectional view taken along the line BB in FIG.

FIG. 18 is an explanatory diagram of a conventional example.

19 is an explanatory diagram of the installation method of the conventional example shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fixing ring 1a Upper ring 1b Lower ring 3a, 3b Groove 2 Screw bar 4, 17, 22 Presser washer 5 Nut

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Shinji Suzuki 2-1 Shiraishi-cho, Kawasaki-ku, Kawasaki-shi, Kanagawa Prefecture Inside Japan Casting Co., Ltd. (56) References JP-A-6-346509 (JP, A) 3-55401 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) E04B 1/16 E04B 1/21 E04C 5/18 103

Claims (2)

(57) [Claims] 1. The main reinforcement of the column at the connection between the column and the beam.
Side, and the main reinforcement of the beam is attached to the fixing ring.
Threaded portion formed at the tip of the main bar
Screw the nut from inside and outside of the fixing ring
By holding the fixing ring with the nut,
Rebar fixing device for fixing the main reinforcement of the beam to the column side
In the above, the fixing ring, a plurality of
Formed from rings and superimposed on the overlapping surface of these multiple rings
Sometimes a groove is formed to form an insertion hole for the main reinforcement of the beam.
To have an insertion hole which the tip portion of the main reinforcement of the beam is inserted, the
Located at least one between each nut and the fuser ring
When tightening the nut, the plurality of rings
Engagement to couple these rings together.
A rebar fixing device comprising a combining means . 2. The fixing ring has a main reinforcement through which a beam main reinforcement is inserted.
Inflate the insertion part, and thin the other parts
The fixing device for a reinforcing bar according to claim 1, wherein the fixing device is formed.