JP2509804Y2 - Brace end joining hardware and joining structure - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to an end joint metal fitting and a joint structure of a brace used for arranging it on an opening face surrounded by columns and beams of a steel structure building, for example. It is a thing.

[Conventional technology]

As such a brace, a screw rebar 1 as shown in FIG. 10 may be used, and as a joining of the ends, a male screw 6 is also provided from the gusset plate 5 side at the corner of the opening 4.
And project the end of the screw rebar 1 and the male screw 6 into a coupler 7
And it is tightened with a turnbuckle.

 In the figure, 2 indicates a steel beam, and 3 indicates a steel column.

By the way, the male screw 6 is formed as a part of a joining metal article (called a paddle bolt in terms of shape) having a flat plate portion 9 having a bolt through hole 8 at the other end, and the flat plate portion of the joining metal article. 9 is superposed on the gusset plate 5, and bolted with a high strength bolt or the like through the bolt insertion hole 8.

[Problems to be solved by the device]

In the joining structure of the brace ends shown in FIG. 10, 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 is troublesome such as adjusting the tightening force to both sides. The portion where the coupler 7 and the turnbuckle are present becomes a cross-section loss in the brace.

The object of the present invention is to eliminate the disadvantages of the conventional example, to eliminate the need for members such as couplers and turnbuckles that connect screw members to each other, the number of members is small, and bolts can be used for assembly work without turning the screw rebar itself. The brace is made up of only screw rebars, and there is no cross-section loss in the middle, so the braces are 2
Since it can be used for this purpose, it is possible to obtain a proof stress twice as high as that of the conventional one, and to provide a highly reliable brace end joint metal fitting and joint structure.

[Means for solving the problem]

In order to achieve the above-mentioned object, the present invention firstly provides one end side of an elongated plate body with a bifurcated plate body forming a slit for inserting a bifurcated gusset plate, and a bolt through hole is thickened in the bifurcated plate body. The elongated plate is formed in the vertical direction, and the central portion in the width direction is bulged at the other end side of the elongated plate body, and the tubular body portion having the insertion portion of the tunnel-shaped screw rebar which is the non-screw inner peripheral surface is formed in the elongated plate. Formed integrally on the upper and lower surfaces of the body so as to be vertically symmetrical with respect to the elongated plate body, or one end side of the elongated plate body is a bifurcated plate body forming a slit for inserting a bifurcated gusset plate A bolt through hole is formed in the bifurcated plate body in the thickness direction, and the left and right ends in the width direction are bulged on the other end side of the elongated plate body to form a non-screw tunnel-shaped screw. The cylindrical part having the reinforcing bar insertion part is placed on the left and right of this elongated plate It is an summarized in that integrally molded so as to be positioned referred.

Secondly, one end side of the elongated plate body is a bifurcated plate body that forms a slit, and a bolt through hole is formed in the bifurcated plate body in the thickness direction, and the other end side of the elongated plate body is formed. Partly bulge to form a cylindrical part having a tunnel-shaped reinforcing bar insertion part that is the non-screw inner peripheral surface vertically or horizontally symmetrically with respect to the upper and lower surfaces or left and right of this elongated plate body. By using a joint metal piece integrally molded to be positioned, by inserting the gusset plate on the building body side into the slit and bolting it, this joint metal piece is attached to the gusset plate, and a brace is inserted in the insertion part of the joint metal piece. A threaded reinforcing bar is passed through, and a tightening nut is screwed to the protruding end of the threaded reinforcing bar, or one of the intersecting braces has a threaded reinforcing bar at the end side of the elongated plate body in the widthwise central part. Bulge and non-screw Tunnel-shaped screw, which is a surface, is formed by joining metal fittings integrally formed on the upper and lower surfaces of this elongated plate body so as to be vertically symmetrical with respect to the elongated plate body, and the screw for the other brace is used. Reinforcing bars are bulged at the left and right ends in the width direction at the end side of the elongated plate body, and the tunnel-shaped threaded reinforcing bar insertion portions that are non-screw inner peripheral surfaces are placed on the left and right sides of the elongated plate body with the elongated plate body as the center. The gist of the present invention is to use joining metal parts integrally formed so as to be symmetrically positioned, and to cross these braces so that one of the braces intersects the other so as to sandwich the other from the outside.

[Action]

According to the present invention as set forth in claims 1 to 3, the elongated plate body as the joint metal is bolted to the gusset plate on the side of the building body to form the insertion portion of the screw rebar on the gusset plate side. Will be. When fixing the elongated plate to this gusset plate, the bifurcated plate sandwiches the upper and lower surfaces of the gusset plate so that a double shearing force acts and the brace mainly consists of high-strength steel frame with a bolt number of 2 minutes. It can be reduced to about 1.

As described above, since the two reinforcing bar insertion portions are formed on the upper and lower surfaces or on the left and right sides on the other side of the elongated metal plate member joined to the gusset plate side, two braces in the same direction can be formed by one member. It is possible to join the screw rebars and the insertion part is located vertically or horizontally symmetrically around the elongated plate body, so even if two screw rebars are joined, eccentric bending is not applied and the strength is high. A good brace having a high value can be obtained. Since two braces are used, if the screw rebars having the same diameter as the braces have the same diameter, twice the proof stress as in the conventional case can be obtained.

Then, the threaded rebar to be the brace is passed through the insertion part of this rebar, but since the insertion part of the rebar is a tunnel-shaped non-screw inner peripheral surface, insert it into the insertion part without turning the screw rebar. The connection is completed by penetrating and screwing a nut, which is separate from the insertion portion, to the projecting end of the screw reinforcing bar and tightening.

In this way, it is possible to connect to the joint metal attached to the gusset plate without turning the screw rebar, so connect the end opposite to the end of the screw reinforcement to which this joint metal is connected to the joint metal attached to the gusset plate on the opposite side. It's easy to do.

Then, the nut prevents the screw reinforcing bar from coming out of the insertion portion, and the tightening force is given by the nut, so that the screw reinforcing bar is integrated with the gusset plate through the joint metal.

It should be noted that the protrusion from the insertion portion as the end portion of the screw rebar, which is a brace inserted from the insertion portion using the extra length portion of the elongated plate body from the rear end of the tubular portion having the insertion portion to the position where the bolt is fastened The length of the part can be adjusted. At this time, the protruding portion from the insertion portion of the screw reinforcing bar serving as the brace is visible, so that it is convenient to adjust the length.

Further, a screw rebar is used as the brace, and as a rebar having a thread groove cut in advance, effective yield strength can be obtained from the entire cross section of the brace without causing a screw defect in the rebar.

According to the present invention as set forth in claim 4, in addition to the above-mentioned action, in the case of intersecting braces, one of the braces intersects at the intersection so that the other sandwiches the other from the outside. It does not require thickness, and it fits well.

〔Example〕

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a plan view showing a first embodiment of a brace end joining metal article 10 of the present invention, FIG. 2 is a front view of the same as above, FIG. 3 is a side view of the same, and 11 is an elongated plate body.

As the joint metal 10, the whole elongated plate body 11 is formed by cast steel or forging, and one end side is an upper plate 15a and a lower plate 1.
5b is a bifurcated plate that forms a slit 13 for inserting a gusset plate, and a plurality of bolt through holes 12 (three in the drawing) are formed at appropriate intervals in the upper plate 15a and the lower plate 15b of the bifurcation. Formed side by side.

The elongated plate body 11 is provided with a cylindrical body portion 20 having a tunnel-shaped threaded reinforcing bar insertion portion 14 which is a non-screw inner peripheral surface and which bulges out in the widthwise central portion on the other end side of the elongated plate body 11. The upper and lower surfaces are integrally formed so as to be vertically symmetrical with respect to the elongated plate body 11.

Next, the brace end joining structure of the present invention using this joining hardware 10 will be described.

A gusset plate 5 is provided at the corner of the opening surrounded by the steel beam and the steel column. As shown in FIG. 4, the gusset plate 5 is inserted into the slit 13 of the metal joint 10 and the bolt is inserted. High-strength bolts 16 and nuts 17 are fixed through the through holes 12 with washers 18 interposed.

In this way, the elongated plate member 11 is attached to the gusset plate 5 so that the side having the insertion portion 14 projects from the gusset plate 5.

In the figure, 19 is a threaded reinforcing bar as a brace, but this threaded reinforcing bar 19 is slidably passed through the insertion portion 14, and a nut 21 for tightening (double nut in the case shown) is screwed into the protruding end thereof. .

Although illustration is omitted, a washer may be interposed.

In this way, the nut 21 gives a tightening force to the screw reinforcing bar 19, and the transmission of the stress from the gusset plate 5 smoothly flows to the screw reinforcing bar 19 as a brace via the metal joint 10.

FIGS. 5 to 7 show a second embodiment of the brace end metal fitting of the present invention, which is a tubular body having a non-screw inner peripheral surface insertion portion 14 for inserting the screw rebar as a metal fitting 10 '. Part 20
Is not the one in which the central portion in the width direction is swollen, but the left and right end portions in the width direction are swollen to the left and right of the slender plate body 11.
It was molded integrally so that it would be located symmetrically with 11 as the center.

The other structure is the same as that of the first embodiment, and the brace end joining structure of the present invention using this joining metal 10 'is also the same.

Next, the case where the braces intersect will be described as the second invention of the brace end joining structure of the present invention.

As shown in FIG. 9, in order to arrange the screw reinforcing bar 19 as a brace in the opening 4 surrounded by the steel beam 3 and the steel column 3, one of the intersecting braces should be used. The screw reinforcing bar 19 as a brace bulges out in the widthwise central part at the end side of the elongated plate body 11 in the first embodiment, and the insertion part 14 of the screw reinforcing bar is formed on the upper and lower surfaces of the elongated plate body 11. A joint metal piece 10 integrally formed so as to be vertically symmetrical with respect to the body 11 is used, and a screw rebar 19 'serving as the other brace is provided on the end side of the elongated plate body 11 in the second embodiment in the width direction left and right. The end part is bulged to insert the insertion part 14 into this elongated plate body.
The ends of the eleventh plate 11 are joined to the gusset plate 5 by using the joining metal piece 10 'integrally formed on the left and right sides of 11 so as to be symmetrically located about the elongated plate body 11.

When the joint metal fitting 10 is used, the screw rebars 19 are lined up with each other with the gusset plate 5 interposed between the gusset plate 5 and the gusset plate 5. On the other hand, when the joint metal fitting 10 ′ is used, the screw rebar 19 ′ is gusseted. The plates 5 are arranged side by side so that they are almost arranged.

Therefore, the screw rebars 19,19 'of these intersecting braces
Since the screw rebars 19 cross each other at the intersection so that the screw rebars 19 'are sandwiched from the outside, they are extremely fit.

[Effect of device]

As described above, the brace end joint metal fitting and the joint structure of the present invention do not require a member such as a coupler or a turnbuckle for connecting screw members to each other, and the number of members is small,
Assembly work can also be done easily and quickly by using bolts without turning the screw rebar itself.

Further, conventionally, a gusset plate and a high-strength bolt are generally required at the intersection, but this is not necessary because the reinforcing bar braces do not hit each other at the intersection.

Furthermore, since the braces are made up of only screw rebars and no cross-section loss occurs in the middle, the braces are 2
Since this can be used, it is possible to take twice the yield strength as the conventional one.

[Brief description of drawings]

FIG. 1 is a plan view showing a first embodiment of a brace end joint metal fitting of the present invention, FIG. 2 is a front view of the same as above, FIG. 3 is a side view of the same, and FIG. 5 is a perspective view of the brace end joining structure of FIG. 5, FIG. 5 is a plan view showing a second embodiment of the brace end joining metal article of the present invention, FIG. 6 is a front view of the same, FIG. 7 is a side view of the same, and FIG. FIG. 9 is a perspective view of a brace end joining structure of the present invention using the joining hardware of the second embodiment, and FIG. 9 is a front view showing a second embodiment of the brace end joining structure of the present invention, and FIG. [Fig. 4] is a front view showing a conventional example. 1 …… Screw rebar, 2 …… Steel beam 3 …… Steel column, 4 …… Opening 5 …… Gusset plate, 6 …… Male screw 7 …… Coupler, 8 …… Bolt insertion hole 9 …… Plate part, 10,10 '…… Molding metal 11 …… Slender plate, 12 …… Bolt through hole 13 …… Slit, 14 …… Insert part 15a …… Upper plate, 15b …… Lower plate 16 …… Bolt, 17 …… Nut 18 ... Washer, 19,19 'Screw rebar 20 ... Cylinder part, 21 ... Nut

Continuation of the front page (56) References Microfilm (JP, U) Actual Application Sho 63, which is a photograph of the contents and drawings attached to the application of Application 51-21361 (Act 52-112608). Microfilm (JP, U) filming the contents of the specification and drawings attached to the application for No. -69964 (Jitsukaihei 1-173210)

Claims (4)

(57) [Scope of utility model registration request] 1. An elongated plate member having a bifurcated plate member on one end side for forming a slit for inserting a bifurcated gusset plate, and a bolt through hole is formed in the bifurcated plate member in the thickness direction. At the other end side of the plate body, a tubular portion having a tunnel-shaped threaded reinforcing bar insertion portion which is a non-screw inner peripheral surface is formed on the upper and lower surfaces of the elongated plate body by bulging the central portion in the width direction. A brace end-joint metal fitting, which is integrally molded so as to be vertically symmetrical with respect to the center. 2. An elongated plate member is provided with a bifurcated plate member having one end side for forming a slit for inserting a bifurcated gusset plate, and a bolt through hole is formed in the bifurcated plate member in the thickness direction. On the other end side of the plate body, the left and right ends in the width direction are bulged to form a tubular body portion having a tunnel-shaped threaded reinforcing bar insertion portion which is a non-screw inner peripheral surface on the left and right sides of the elongated plate body. A brace end metal fitting which is integrally molded so as to be symmetrically positioned with respect to the center. 3. An elongated plate member having a bifurcated plate member having a slit formed on one end side thereof, a bolt through hole formed in the bifurcated plate member in a thickness direction, and the other end side of the elongated plate member. A cylindrical part having a tunnel-shaped rebar insertion part, which is a non-screw inner peripheral surface, is swelled up and down or left and right with respect to the slender plate Using a joint metal piece integrally molded so that it is located at the position, insert the gusset plate on the building body side into the slit and bolt it to attach this joint metal piece to the gusset plate and brace the insertion part of the joint metal piece. A brace end joint structure characterized in that a screw rebar to be penetrated is penetrated, and a nut for tightening is screwed into a protruding end thereof. 4. An elongated plate member having a bifurcated plate member having a slit formed on one end side thereof, a bolt through hole formed in the bifurcated plate member in the thickness direction, and the other end side of the elongated plate member. A cylindrical part having a tunnel-shaped rebar insertion part, which is a non-screw inner peripheral surface, is swelled up and down or left and right with respect to the slender plate Using a joint metal piece integrally molded so that it is located at the position, insert the gusset plate on the building body side into the slit and bolt it to attach this joint metal piece to the gusset plate and brace the insertion part of the joint metal piece. In a brace end joint structure in which a screw rebar to be penetrated and a protruding nut are screwed into the projecting end, the screw rebar as one of the crossed braces has a width on the end side of the elongated plate body. Direction central part A metal fitting is used that is formed by integrally bulging and inserting a tunnel-shaped threaded reinforcing bar, which is a non-screw inner peripheral surface, on the upper and lower surfaces of this elongated plate so as to be vertically symmetrical with respect to the elongated plate. , The other side of the screw rebar as the brace is bulged at the left and right ends in the width direction at the end side of the elongated plate, and the tunnel-shaped threaded rebar insertion part, which is the non-screw inner peripheral surface, is attached to the left and right sides of the elongated plate. In this case, a joint metal piece integrally formed so as to be positioned symmetrically about the elongated plate body is used, and these intersecting braces are intersected so that one of them is sandwiched from the outside at the intersection. Brace end joining structure.