JP2780066B2 - Brace end joint structure and joint hardware - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to, for example, an end joining structure of an opening face surrounded by columns and beams of a steel structure building, and an end joining structure of a brace disposed on a beam on a roof surface and a joining metal used therefor. Things.

[0002]

2. Description of the Related Art As such a brace, there is a case where a threaded reinforcing bar 1 as shown in FIG. 5 is used. And one end of the screw rebar 1 and the male screw 6 are fastened and connected by a coupler 7 or a turnbuckle.
In the figure, reference numeral 2 denotes a steel beam, and reference numeral 3 denotes a steel column.

The male screw 6 is formed as a part of a metal joint (referred to as a paddle bolt in terms of shape) having a flat plate portion 9 having a bolt insertion hole 8 formed at the other end.
The flat plate portion 9 of the metal joint is put on the gusset plate 5 and bolted with a high-strength bolt or the like through the bolt insertion hole 8.

[0004]

In the joint structure at the end of the brace shown in FIG. 5, the operation of tightening and coupling the one end of the screw rebar 1 and the male screw 6 with the coupler 7 or the turnbuckle adjusts the tightening force on both sides. It is troublesome to do,
The part where the coupler 7 and the turnbuckle are present is connected halfway through the brace.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned disadvantages of the prior art, eliminate the need for a member such as a coupler or a turnbuckle for connecting screw members, reduce the number of members, and make assembly work simple and quick. Another object of the present invention is to provide a brace end joint structure and a metal joint having high reliability because the brace is not connected in the middle.

[0006]

According to the present invention, in order to achieve the above object, as a brace end joining structure, a rear end of an elongated plate is formed as a bifurcated two parallel plate having a gap therebetween. A bolt through hole is provided in the thickness direction of the plate body, a window hole in the thickness direction is formed at the center of the elongated plate body, and a cylindrical hole is formed to communicate the tip of the elongated plate body with the window hole. Using a joint metal provided with a threaded bar insertion portion, a gusset plate on the building frame side is inserted into a gap on the rear end side of the joint metal, and the rear end of the joint metal is inserted through the bolt through hole. The gist is that bolts are fastened to the gusset plate on the building frame side, a threaded reinforcing bar serving as a brace is penetrated from the tip side to the insertion portion of the reinforcing bar, and a nut for tightening is screwed into a protruding end of the threaded reinforcing bar in the window hole. Is what you do.

[0007] As a bracing end metal fitting, a rear end of an elongated plate made of one piece is formed as a fork of two pieces parallel to each other with a gap therebetween, and a bolt penetrates in the thickness direction of the piece. Providing a hole, forming a window in the thickness direction at the center of the elongated plate, and providing an insertion portion of a cylindrical screw reinforcing bar that communicates the tip of the elongated plate and the window, or , The elongated plate is 2
The plate is formed by stacking two plates, and the rear end of the elongated plate is
The plate body is provided with a bolt through hole in the thickness direction in each plate body as a bifurcated parallel with a gap, and a window hole in the thickness direction is formed in each plate body at the center of the elongated plate body. This is overlapped to form one window hole, and at the distal end side of the elongated plate body, a cylindrical screw reinforcing bar for communicating the window hole and the distal end by matching the curved portions of the half cylinders formed in each plate body. The gist is to constitute an insertion portion.

[0008]

According to the present invention, an elongated plate as a metal joint is bolted to the gusset plate on the building frame side, so that the threaded bar insertion portion is secured on the gusset plate side.

Therefore, if a threaded reinforcing bar serving as a brace is penetrated through the insertion portion, and a nut for tightening is screwed into a protruding end of the threaded reinforcing bar in the window hole, the threaded rebar does not come out of the insertion portion by the nut. In addition, a tightening force is applied by the nut, and the screw rebar is integrated with the gusset plate via a metal joint.

In this manner, the transmission of the stress from the gusset plate smoothly flows to the threaded reinforcing bar as a brace via the metal joint, and the jointed metal is located at the center of the elongated plate body at the insertion portion of the cylindrical screw reinforcing bar. Therefore, the core of the screw rebar and the core of the metal joint substantially match. As a result, even if a tensile force is applied to the metal joint, no excessive force is applied to the gusset plate, and it is possible to prevent the gusset plate from bending.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a front view showing an embodiment of a brace end joining structure according to the present invention, in which the same components as those in FIG. Reference numeral 10 in the figure denotes a metal joint, which will be described first. As shown in FIGS. 2 and 3, reference numeral 11 in the figures denotes an elongated plate. The elongated plate 11 is formed of two plates 1 by casting or forging press or the like.
1a and 11b are overlapped, and the rear end side is a forked portion where the two plate bodies 11a and 11b are parallel with a gap 12 therebetween.

Each plate 11a,
11b is provided with an appropriate number of bolt through-holes 13 in the thickness direction. In the center of the elongated plate 11, window holes 14 in the thickness direction are formed in each of the plates 11a and 11b. And Further, on the tip side of the elongated plate 11, each plate 11
A curved portion 15 having a semi-cylindrical shape is formed in each of a and 11b, and the curved portion 15 is combined with the curved portion 15 to form a cylindrical threaded bar insertion portion 16 that allows the window hole 14 to communicate with the tip. Although not shown, each plate 11a, 11b is an elongated plate 11 fixed to each other by bolting or spot welding.

As shown in FIG. 1, a gusset plate 5 is provided at a corner of an opening 4 surrounded by a steel beam 2 and a steel column 3.
Of the bolt through hole 13
And is fixed with a high-strength bolt 17 and a nut 18 via a washer 19. With this configuration, the side of the elongated plate body 11 where the window hole 14 and the insertion portion 16 are provided protrudes from the gusset plate 5.

In the figure, reference numeral 20 denotes a screw reinforcing bar as a brace. The distal end of the screw reinforcing bar 20 is made to penetrate from the distal end side of the elongated plate body 11 to the insertion portion 16 of the reinforcing bar. A nut 21 for tightening was screwed to the end with a washer 22 interposed. In this manner, the nut 21 applies a tightening force to the screw rebar 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 11, the core of the screw rebar 20 and the core of the elongated plate 11 substantially match. As a result, even if a tensile force is applied to the elongated plate body 11, an excessive force is not applied to the gusset plate 5, and the gusset plate 5 can be prevented from bending.

FIG. 4 shows a second embodiment of the brace end joint metal according to the present invention.
1 is made as a single piece of cast steel or the like, and the rear end of the elongated plate body 11 is made into two branches in which two plate bodies 11c and 11d are parallel with a gap 12 therebetween. Other configurations are the same as those shown in FIGS. 2 and 3. Bolt through holes 13 are provided in the thickness direction of the plate bodies 11 c and 11 d, and a window hole 14 in the thickness direction is formed in the center of the elongated plate body 11. And an insertion portion 16 of a cylindrical screw rebar for communicating the tip end of the elongated plate body 11 with the window hole 14 is provided.

The brace end joining structure of the present invention using the metal joint 10 in the second embodiment is almost the same as that described in the first embodiment with reference to FIG. The rear end side is bolted to the gusset plate 5 on the building frame side through the through hole, and the screw reinforcing bar 20 serving as a brace is penetrated from the front end side into the insertion portion 16 of the reinforcing bar, and fastened to the protruding end of the screw reinforcing bar 20 in the window hole 14. Screw 21 is screwed.

Although not shown, the gusset plate 5 may be provided at the end of the steel frame in the case where the threaded reinforcing bar 20 is arranged as a horizontal brace in addition to the diagonal brace shown in FIG. The structure is applicable.

[0019]

As described above, the brace end joining structure and the joining hardware according to the present invention do not require a member such as a coupler or a turn buckle for connecting the screw members, and the number of members is small, and the assembling work is simple. It can be done quickly. Further, the brace is composed of only the screw reinforcing bar, and there is no connection part in the middle, so that the strength is highly reliable.

Further, since the metal joint of the screw is substantially aligned with the core of the screw metal, even if a tensile force is applied to the metal joint, no excessive force is applied to the gusset plate, and the gusset plate is bent. Can be prevented.

[Brief description of the drawings]

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

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

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

FIG. 4 is a perspective view showing a second embodiment of a bracing end metal fitting according to the present invention.

FIG. 5 is a front view showing a conventional example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Screw reinforcement 2 ... Steel beam 3 ... Steel column 4 ... Opening 5 ... Gusset plate 6 ... Male screw 7 ... Coupler 8 ... Bolt insertion hole 9 ... Flat plate part 10 ... Joint hardware 11 ... Slender plate body 11a, 11b, 11
c, 11d: Plate 12: Gap 13: Bolt through hole 4: Window hole 15: Curved portion of semi-cylindrical 6: Insertion portion 17: Bolt 8: Nut 19: Washer 0: Screw bar 21: Nut 22: Washer

────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Hikojiro Kijima 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. (72) Inventor Ken Kitamura 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Inside Kashima Construction Co., Ltd. (72) Inventor Masahiro Ishitsuki 520 Yokokura Nitta, Oyama City, Tochigi Prefecture Inside Tokyo Iron & Steel Corporation (72) Inventor Tomomi Masuda 520 Yokokura Nitta, Oyama City, Tochigi Prefecture Inside Tokyo Steel Steel Corporation (72) Inventor Takayuki Suzuki 520 Yokokura Nitta, Oyama City, Tochigi Prefecture Inside Tokyo Iron & Steel Corporation Kaihei 4-132102 (JP, U) (58) Field surveyed (Int. Cl. ⁶ , DB name) E04B 1/24

Claims (3)

(57) [Claims] 1. A rear end of an elongated plate is formed as a forked portion in which two plates are parallel with a gap therebetween, and a bolt through hole is provided in the thickness direction of the plate, and a central portion of the elongated plate is provided. In order to form a window hole in the thickness direction, a metal joint provided with a cylindrical screw reinforcing bar through which the end of the elongated plate body communicates with the window hole is used, and a rear end side of the metal joint is used. A gusset plate on the building body side is inserted into the gap, and the rear end side of this joint metal is bolted to the gusset plate on the building body side via the bolt through hole, and a brace is formed from the tip side to the insertion portion of the reinforcing bar. A brace end joining structure, wherein a screw nut is penetrated, and a fastening nut is screwed into a protruding end of the screw reinforcing bar in the window hole. 2. A rear end of an elongated plate made of one piece is formed as a forked portion in which two sheets are parallel to each other with a gap therebetween, and a bolt through hole in a thickness direction of the plate is provided here, Brace end joints characterized by forming a window in the thickness direction at the center of the plate, and providing an insertion portion of a cylindrical screw rebar for communicating the tip of the elongated plate with the window. hardware. 3. The elongated plate body is formed by stacking two plate bodies, and the rear end side of the elongated plate body has a thickness in each plate body as a forked portion in which the two plate bodies are parallel with a gap. In the central part of the elongated plate, a thickness direction window hole is formed in each plate body, and these are overlapped to form one window hole, and at the tip side of the elongated plate body, A brace-end joint metal fitting, wherein a bent portion of a semi-cylindrical member formed on each plate is combined to form a cylindrical threaded bar insertion portion for communicating the window hole and the tip.