JPH0579094A - Brace end joining structure and joining fitting - Google Patents

Abstract

PURPOSE:To improve the extent of reliability even from the standpoint of strength by requiring no member for connecting screw members themsleves for a coupler and a turnbuckle or the like, reducing the number of members, and making a job for assemblage performable simply and quickly as well as preventing a brace from being connected in the midway. CONSTITUTION:A bolt through hole 13 in the thickness direction of a plate body 11 is installed at the rear end side of a slender plate body 11, and a thickness direction window hole 14 is formed in a central part of the slender plate body 11, using a joining fitting 10 provided with an insertional part 16 of a cylindrical threaded reinforcing bar having a tip and the window hole 14 of the slender plate lady 11 interconnected to each other. In succession, the rear end side of this joining fitting 10 is bolted to a gusset plate 5 at the building body side via the bolt through hole 13, and the threaded reinforcing bar 20 serving as a brace is pierced through the reinforcing insertional part 16 from the tip side. Then, a clamping nut 21 is screwed in a projecting end of the threaded reinforcing bar 20 in the window hole 14.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to, for example, an opening face surrounded by columns and beams of a steel structure building, and an end joint structure of a beam on a roof face and braces arranged on the beam, and a metal fitting used therefor. It is a thing.

[0002]

2. Description of the Related Art As such a brace, a screw reinforcing bar 1 as shown in FIG. 9 may be used, and as a joining of the ends thereof, a male screw 6 is also provided from the gusset plate 5 side at the corner of the opening 4. Is projected, and the end of the screw rebar 1 and the male screw 6 are fastened and coupled by a coupler 7 or a turnbuckle.
In the figure, 2 is a steel frame beam and 3 is a steel frame column.

By the way, this male screw 6 is formed as a part of a metal joint (which is called a paddle bolt because of its shape) having a flat plate portion 9 having a bolt insertion hole 8 at the other end.
The flat plate portion 9 of the metal fitting is superposed on the gusset plate 5, and bolted with a high-strength bolt or the like through the bolt insertion hole 8.

[0004]

In the brace end joining structure shown in FIG. 9, the work of tightening and connecting the end of the screw rebar 1 and the male screw 6 with the coupler 7 and the turnbuckle adjusts the tightening force on both sides. It is troublesome to do, and also
The portion where the coupler 7 and the turnbuckle are located becomes a midway connection in the brace.

The object of the present invention is to eliminate the disadvantages of the prior art example, to eliminate the need for members such as couplers and turnbuckles for connecting screw members to each other, the number of members is small, and the assembling work can be simple and quick. The purpose of the present invention is to provide a brace end joining structure and a joining metal fitting that are highly reliable in terms of strength because braces are not connected in the middle.

[0006]

In order to achieve the above-mentioned object, the present invention provides a bolt through hole in the thickness direction of the elongated plate body at the rear end side of the elongated plate body, and a central portion of the elongated plate body. A metal fitting is used which is formed with a window hole in the thickness direction and is provided with an insertion portion of a cylindrical screw rebar for communicating the tip of the elongated plate body with the window hole, and the metal fitting is provided through the bolt through hole. The rear end side is bolted to the gusset plate on the building body side, the screw reinforcing bar that serves as a brace is passed through the reinforcing bar insertion part from the front side, and the tightening nut is screwed on the protruding end of the screw reinforcing bar in the window hole. In addition, the joining metal object is such that the rear end of the elongated plate body is formed with two plate bodies in parallel with a gap therebetween and a bolt through hole in the thickness direction of the plate body is provided therein, A window hole in the thickness direction is formed in the center of the circle, and the tip of the elongated plate is communicated with the window hole. -Shaped screw rebar insertion part is provided, or the joining metal object is that the elongated plate body is formed by stacking two plate bodies, and there is a gap between the two plate bodies at the rear end side of the elongated plate body. Then, each plate body is provided with a bolt through hole in the thickness direction as two forks in parallel, and a window hole in the thickness direction is formed in each plate body at the center of the elongated plate body, and one window hole is formed by stacking the window holes. On the tip end side of the elongated plate body, a semi-cylindrical curved portion formed on each plate body is combined to form a cylindrical screw rebar insertion portion that connects the window hole and the tip end. It is what

[0007]

According to the present invention, the elongated plate member as the joint metal is bolted to the gusset plate on the side of the building frame, so that the insertion portion of the screw rebar is secured on the gusset plate side.

Therefore, if a threaded rebar serving as a brace is passed through this insertion part and a nut for tightening is screwed into the projecting end of the threaded rebar in the window hole, the threaded rebar will not come off from the insertion part by the nut. Moreover, the tightening force is given by this nut, and the screw rebar is integrated with the gusset plate through the joint metal.

In this way, the transmission of the stress from the gusset plate smoothly flows to the screw rebar as a brace through the metal joint, but in the metal joint, the insertion portion of the cylindrical screw rebar is located at the center of the elongated plate. As a result, the core of the screw rebar and the core of the joint metal are substantially aligned. As a result, it is possible to prevent the gusset plate from being bent even if a tensile force is applied to the joint metal, without applying an unreasonable force to the gusset plate.

[0010]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a front view showing an embodiment of the brace end joining structure of the present invention, in which the same components as those in FIG. 10 showing the conventional example are designated by the same reference numerals. In the figure, 10 is a metal joint, which will be explained with reference to FIG.
As shown in FIG. 3, 11 is an elongated plate body. Slender plate 11
Is two plates 11a, 11b made by casting or forging press
The two plate bodies 11a and 11b on the rear end side.
There are two gaps in parallel with each other.

The plate members 11a, 11 are provided on the bifurcated portion.
An appropriate number of bolt through holes 13 in the thickness direction are provided in b, and a window hole 14 in the thickness direction is formed in each plate body 11a, 11b at the central portion of the elongated plate body 11.
And form a window hole. Further, on the tip side of the elongated plate body 11, a semi-cylindrical bent portion 15 is formed on each of the plate bodies 11a and 11b, and by combining the bent portions 15, the window hole 14 and the tip end are communicated with each other. -Shaped screw rebar insertion part
Make up 16. Although not shown, each plate 11a, 11a
Reference numeral b is an elongated plate member 11 fixed to each other by bolting or spot welding.

As shown in FIG. 1, a gusset plate 5 is provided at the corner of the opening 4 surrounded by the steel beam 2 and the steel column 3, and the gusset plate 5 is provided at the rear end of the metal fitting 10. It is inserted into the gap 12 on the side and fixed by interposing a washer 19 with a high-strength bolt 17 and a nut 18 through the bolt through hole 13. By doing so, the window hole 14 and the insertion portion 16 of the elongated plate body 11 are formed.
The side with is projected from the gusset plate 5.

In the figure, reference numeral 20 denotes a threaded reinforcing bar as a brace. The tip of the threaded reinforcing bar 20 is penetrated from the tip side of the elongated plate body 11 to the insertion section 16 of the reinforcing bar, and the threaded reinforcing bar in the window hole 14 is inserted.
A nut 21 for tightening was screwed onto the protruding end of 20 with a washer 22 interposed. In this way, the nut 21
A tightening force is applied to 20, and the transmission of stress from the gusset plate 5 smoothly flows to the screw rebar 20 as a brace via the metal joint 10.

Further, since the insertion portion 16 is located at the center of the elongated plate body 11, the core of the screw reinforcing bar 20 and the core of the elongated plate body 11 are substantially aligned with each other. As a result, even if a tensile force is applied to the elongated plate body 11, it is possible to prevent the gusset plate 5 from being bent without applying an unreasonable force to the gusset plate 5.

FIG. 4 shows a second embodiment of the brace end joint metal article of the present invention. The elongated plate body 11 serving as the joint metal article 10 is formed as one piece of cast steel or the like. The rear end is a bifurcation in which two plate members 11c and 11d are parallel to each other with a gap 12 left therebetween. Other configurations are the same as those in FIGS. 2 and 3, and a bolt through hole 13 in the thickness direction of the plate bodies 11c and 11d is provided, and a window hole 14 in the thickness direction is formed in the central portion of the elongated plate body 11. And a cylindrical screw rebar insertion portion 16 that connects the tip of the elongated plate 11 and the window hole 14 is provided.

The brace end joining structure of the present invention using the joining metal article 10 in the second embodiment is almost the same as that described in FIG. 1 in the first embodiment.

FIG. 5 shows a second embodiment of the brace end joint metal article of the present invention. The elongated plate body 11 to be the joint metal article 10 is formed as one piece such as cast steel, and the rear end portion is also bifurcated. I left it as one sheet without doing it. 6 and 7 show an example of the modification, and FIG. 8 shows another modification, which is appropriately rounded. If these rear ends are not bifurcated but left as one piece, the bolt through holes 13
The rear end portion provided with the core so that the core is at least close to the center of the insertion portion 16 of the cylindrical screw reinforcing bar at the front end portion,
When the bolt through holes 13 are overlapped and fixed on the gusset plate 5, the core of the screw reinforcing bar 20 and the core of the elongated plate body 11 are made to substantially coincide with each other.

As the brace end joining structure, the first
Same as the embodiment, the rear end side is bolted to the gusset plate 5 on the building body side through the bolt through hole 13 of the joint metal 10, and the screw rebar 20 to be a brace is attached to the insertion part 16 of the rebar from the tip side. A nut 21 for tightening is screwed into the projecting end of the threaded reinforcing bar 20 in the window hole 14 so as to penetrate.

Although not shown in the drawings, in addition to the diagonal brace shown in FIG. 1, when the screw reinforcing bar 20 is arranged as a horizontal brace, if the gusset plate 5 is provided at the end of the steel frame, the end portion of the brace of the present invention is joined. The structure is applicable.

[0020]

As described above, the brace end joining structure and the joining hardware of the present invention do not require a member such as a coupler or a turnbuckle for connecting screw members to each other, the number of members is small, and the assembling work is simple. And it can be done quickly. Further, the brace is highly reliable in terms of strength because it is composed only of screw rebars and no connecting part is formed in the middle.

Further, since the core of the screw rebar and the core of the joint metal are substantially aligned with each other in the joint metal, even if a tensile force is applied to the joint metal, an unreasonable force is not applied to the gusset plate and the gusset plate bends. It is possible to prevent it.

[Brief description of drawings]

FIG. 1 is a front view showing a first embodiment of a brace end joining structure of the present invention.

FIG. 2 is a perspective view showing a first embodiment of a brace end portion joint metal article of the present invention.

FIG. 3 is a front view showing a first embodiment of a brace end portion joint metal article of the present invention.

FIG. 4 is a perspective view showing a second embodiment of the brace end joint metal article of the present invention.

FIG. 5 is a perspective view showing a third embodiment of the brace end joint metal article of the present invention.

FIG. 6 is a front view showing a fourth embodiment of the brace end joint metal article of the present invention.

FIG. 7 is a side view showing a fourth embodiment of the brace end joint metal article of the present invention.

FIG. 8 is a front view showing a fifth embodiment of the brace end portion joint metal article of the present invention.

FIG. 9 is a front view showing a conventional example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Screw rebar 2 ... Steel beam 3 ... Steel column 4 ... Opening 5 ... Gusset plate 6 ... Male screw 7 ... Coupler 8 ... Bolt insertion hole 9 ... Flat plate 10 ... Joining metal 11 ... Elongated plate 11a, 11b, 11c ， 11
d ... Plate 12 ... Gap 13 ... Bolt through hole 14 ... Window hole 15 ... Semi-cylindrical bent portion 16 ... Insertion portion 17 ... Bolt 18 ... Nut 19 ... Washer 20 ... Screw rebar 21 ... Nut 22 ... Washer

Front Page Continuation (72) Inventor Hikojiro Kijima 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. (72) Ken Ken Kitamura 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Ken Kashima (72) Inventor Masahiro Ishizuke 520 Yokokura Nitta, Oyama City, Tochigi Prefecture Tokyo Steel Co., Ltd. (72) Inventor Tomomi Masuda 520 Yokokura Nitta, Oyama City, Tochigi Prefecture Tokyo Steel Co., Ltd. ( 72) Inventor Takako Suzuki 520 Yokokura Nitta, Oyama City, Tochigi Prefecture Tokyo Steel Co., Ltd. (72) Inventor Shinichi Tateishi 662 Yokokura, Oyama City, Tochigi Prefecture Totetsu Sangyo Co., Ltd.

Claims (5)

[Claims] 1. An elongated plate body is provided with a bolt through hole in the thickness direction of the elongated plate body at a rear end side thereof, and a window hole in the thickness direction is formed at a central portion of the elongated plate body. Using a joint metal fitting provided with a cylindrical screw rebar insertion part that communicates the tip of the joint with the window hole, the rear end side of the joint metal fitting is bolted to the gusset plate on the building frame side through the bolt through hole. A brace end joining structure is characterized in that a threaded rebar serving as a brace is penetrated from the tip end side to an insertion part of the rebar, and a tightening nut is screwed to a protruding end of the threaded rebar in the window hole. 2. An elongated plate body is provided with a bolt through hole in the thickness direction of the elongated plate body at a rear end side thereof, and a window hole in the thickness direction is formed in a central portion of the elongated plate body. A brace end-joint metal fitting having a cylindrical threaded bar insertion portion for communicating the tip of the with the window hole. 3. The elongated plate body has a rear end as a bifurcation in which two plate bodies are parallel to each other with a gap therebetween, and a bolt through hole in the thickness direction of the plate body is provided therein, and a central portion of the elongated plate body. Is formed by forming a window hole in the thickness direction and using a metal fitting provided with an insertion portion of a cylindrical screw rebar for communicating the tip of the elongated plate body with the window hole. Insert the gusset plate on the building body side into the gap, bolt the rear end side of this joint metal to the gusset plate on the building body side through the bolt through holes, and form a brace from the tip side to the insertion part of the reinforcing bar. A brace end joining structure characterized in that a threaded reinforcing bar is penetrated and a nut for tightening is screwed into a protruding end of the threaded reinforcing bar in the window hole. 4. A bolt through hole in the thickness direction of the plate body is provided at the rear end of the elongated plate body as a bifurcation in which two plate bodies are parallel to each other with a gap therebetween, and a central portion of the elongated plate body. A brace end-joint metal fitting, characterized in that a window hole in the thickness direction is formed in the inner wall of the elongated plate body, and a cylindrical screw reinforcing bar insertion portion for communicating the tip end of the elongated plate body with the window hole is provided. 5. The elongated plate body is formed by stacking two plate bodies, and the rear end side of the elongated plate body has a thickness for each plate body such that the two plate bodies are parallel to each other with a gap. A bolt through hole in the depth direction is provided, and a window hole in the thickness direction is formed in each plate body at the central portion of the elongated plate body to form one window hole by stacking this, and at the tip side of the elongated plate body, A brace end-joint metal fitting, characterized in that a semi-cylindrical bent portion formed on each plate body is combined to form a cylindrical screw rebar insertion portion that communicates the window hole and the tip.