JPH06146404A - Column and beam connecting fitting - Google Patents

Abstract

PURPOSE:To shorten the length of a side plate part for reducing the manufacturing cost of a connecting fitting by forming recessed parts in the side plate part of a column and beam connecting fitting consisting of a base plate part to be connected to a steel structural column and a side plate part projected on the base plate part, and by boring bolt holes in the recessed parts for connecting the fitting to a steel structural beam. CONSTITUTION:Recessed parts 3b are formed on one side surface of the side plate part 3 of a column and beam connecting fitting 1 consisting of a base plate part 2 to be connected to a steel structural column 4 and a side plate part 3 projected on the base plate part 2, and bolt holes 3a are bored in the recessed parts 3b. The outer surface at the end of a steel structural beam 5 is arranged so as to be opposite to the side surface on which the recessed parts 3b of the side plate part 3 of the connecting fitting 1 have been formed, and the steel structural beam 5 and the side plate part 3 of the connecting fitting 1 are connected by means of high-strength bolts 6. The circumference of the bolt hole 5a of the steel structural beam 5 is deformed by tighted of the bolt, and is fitted in the recessed part 3b of the side plate part 3. Thereby, a necessary frictional force between the steel structural beam 5 and the connecting fitting 1 can be secured by a small number of bolts.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal article for joining a column and a beam for joining a steel column and a steel beam.

[0002]

2. Description of the Related Art At a joint portion between a column and a beam for joining a steel beam column and a steel beam used in a steel frame structure or a steel frame reinforced concrete structure, a conventional joining means is fastened to a steel frame column 4 as shown in FIG. A T-shaped metal fitting 1 having a substrate portion 2 and a side plate portion 3 protruding above the substrate portion 2 has been used. This joining hardware 1 is for joining the base plate portion 2 and the steel frame post 4 and the side plate portion 3 and the steel frame beam 5 by bolts. The side surface of the side plate portion 3 facing the joint portion of the steel frame beam 5 is shown in FIG. It was simply formed flat as shown in FIG.

[0003]

SUMMARY OF THE INVENTION In the above conventional technique,
Since the side surface of the side plate portion 3 facing the joint portion of the steel beam 5 is simply formed flat, when the steel beam 5 and the side plate portion 3 of the metal fitting 5 are joined together, the steel beam 5 and the metal joint 1 are joined together. It is necessary to arrange a large number of bolts 6 in order to secure the necessary frictional force between them. Therefore, the side plate portion 3 of the metal fitting for joining is required.
However, there is a problem in that the cost of the metal fitting 1 is increased due to the increased length. Therefore, an object of the present invention is to provide a metal article for joining a pillar and a beam having a short side plate portion.

[0004]

According to the present invention, there is provided a bolt for joining a steel frame pillar to the base plate portion, which has a base plate portion fastened to the steel frame pillar, and a side plate portion projected on the base plate portion. In a metal fitting for a pillar and a beam, in which a hole is formed and a bolt hole for joining a steel beam to the side plate portion is formed, a recess is formed in the side plate portion, and the bolt hole is opened in the recess. Thus, the above-mentioned object is achieved.

[0005]

When the end side surface of the steel beam is arranged opposite to the side plate portion side on the side where the recess is provided, or the side surfaces of a suitable joining member to be joined to the steel beam are oppositely arranged, and then bolt connection is performed, the steel beam is formed. Alternatively, the periphery of the bolt hole of the joining member is deformed by bolting and fits into the concave portion of the side plate portion, so that the necessary frictional force between the steel beam and the joining hardware can be secured by a small number of bolts. Alternatively, a convex portion that fits the concave portion is provided around a bolt hole of a steel beam or an appropriate joining member that is joined to the steel beam, and the steel beam or the joining member is arranged so that the convex portion fits into the concave portion of the side plate portion. When tightened with bolts, the necessary frictional force between the steel beam and the metal fitting can be secured by a small number of bolts.

[0006]

Embodiments of the present invention will be described with reference to the drawings. 1 and 2 show a first embodiment of the present invention, in which a metal fitting 1 for a column and a beam is composed of a substrate portion 2 and a side plate portion 3, and a bolt for fastening the steel column 4 to the substrate portion 2. The hole 2a is bored, and the side plate portion 3 is formed in a shape along the flange surface of the H-shaped steel beam 5 and protrudes to the outside of the substrate portion 2. The side plate portion 3 is provided with a bolt hole 3a for fastening to the steel beam 5, and the bolt hole 3a can penetrate the side plate portion 3 to connect the pillar-and-beam joining hardware 1 and the steel beam 5 to each other by bolts. I am trying. Further, a concave portion 3b is provided on one side surface of the side plate portion 3, and the bolt hole 3a is opened in the concave portion 3b.

This embodiment is constructed as described above,
The outer surface of the end of the steel beam 5 and the recess 3 of the side plate 3 of the metal fitting.
The side surface provided with b is arranged so as to face each other, and then the high-strength bolt 6
When the steel beam 5 and the side plate portion 3 of the metal fitting for welding are joined with each other, the periphery of the bolt hole 5a of the steel beam 5 is deformed by bolting and fits into the concave portion 3b of the side plate portion. It is possible to bond the steel beam 5 and the pillar-and-beam joining metal fitting 1 by securing the above. The material of the metal fitting 1 for joining the pillar and the beam is cast steel,
Forged steel or spheroidal graphite cast iron can be used.

In the above embodiment, the side plate 3 and the steel beam 5 are
Although they are directly contacted with each other, as shown in FIG. 3, a gap adjusting plate 7 is provided between the steel beam 5 and the side plate portion 3 of the metal fitting.
It is also possible to clamp and fix the steel beam 5 and the metal fitting 1 for joining the column and the beam by interposing. Regarding the steel beam 5, the bolt holes 5a of the steel beam are fitted into the recessed portions 3b of the side plate portion by bolting in the above-described embodiment.
It is also possible to previously provide a convex portion that fits the concave portion 3b of the side plate portion around the bolt hole 5a of the steel beam 5 by pressing or the like, and form the steel beam 5 so that the convex portion fits into the concave portion 3b of the side plate portion. . At that time, the surface of the steel beam 5 on the side opposite to the side where the convex portion is provided can be formed flat. Even if the plate thickness of the steel beam 5 is increased and the bolt is tightened, the periphery of the bolt hole 5a of the steel beam 5 is the recess 3b of the side plate portion.
When the steel beam 5 is not fitted so much, it is necessary to previously provide the convex portion on the steel beam 5, but the convex portion may be provided when the plate thickness of the steel beam 5 is thin.

Next, FIG. 4 shows a second embodiment in which the shape of the concave portion of the side plate portion 3 is an oval concave portion 3c which is long in the direction perpendicular to the axis of the steel beam 5. That is, in the first embodiment, as the shape of the concave portion 3b of the side plate portion, the circular concave portion 3b is provided for each opening portion of each bolt hole 3a as shown in FIG. 2, but for joining the steel beam 5 and the column beam Since the frictional force required for the metal 1 is in the axial direction of the steel beam 5, this second
As in the embodiment, the recess 3c is formed in an oval shape elongated in the direction perpendicular to the axis of the steel beam 5, and the adjacent bolt holes 3a, 3 are formed.
Even if it is continued between a, the frictional force in the axial direction of the steel beam 5 can be secured.

[0010]

According to the present invention, it is possible to secure the necessary frictional force between the steel beam and the metal fitting with a small number of bolts, and therefore the side plate portion is short and the manufacturing cost is low. The metal fitting for was obtained.

[Brief description of drawings]

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

FIG. 2 is a perspective view of the first embodiment.

FIG. 3 is a vertical sectional view showing a mode in which a gap adjusting plate is interposed.

FIG. 4 is a perspective view of a second embodiment.

FIG. 5 is a vertical sectional view of a conventional example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Joining metal of pillar and beam 2 ... Board part 2
a ... Bolt hole 3 ... Side plate part 3a ... Bolt hole 3
b, 3c ... Recessed portion 4 ... Steel column 5 ... Steel beam 5
a ... Bolt hole 6 ... Bolt 7 ... Gap adjustment plate

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hidefumi Kunabe 1-9-1, Kitahama, Wakamatsu-ku, Kitakyushu, Fukuoka Prefecture Hitachi Metals Co., Ltd. Wakamatsu Factory (72) Inventor Akio Tomita 1-chome, Motoakakasaka, Minato-ku, Tokyo 2-7 Kashima Construction Co., Ltd. (72) Inventor Kuniaki Sato 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. (72) Inventor Toshio Saeki 2-chome Tobita, Chofu-shi, Tokyo 19 No. 1 Kashima Construction Co., Ltd. Technical Research Institute (72) Inventor Yoshihiro Nakamura 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd.

Claims (3)

[Claims] 1. A side plate part having a base plate part fastened to a steel frame pillar and a side plate part projecting above the base plate part, wherein a bolt hole for joining to the steel frame column is formed in the base plate part. In a metal fitting for joining a pillar and a beam in which a bolt hole for joining with a steel beam is formed, a recess is formed in the side plate portion, and the bolt hole is opened in the recess. Joining hardware. 2. The metal article for joining a pillar and a beam according to claim 1, wherein the concave portion of the side plate portion is formed in an oval shape elongated in a direction perpendicular to the axis of the steel beam. 3. The metal article for joining a pillar and a beam according to claim 1, which is formed of cast steel, forged steel, or spheroidal graphite cast iron.