JPH06102919B2 - Joint structure of columns and beams - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint structure of columns and beams that form a frame of a building.

Conventional technology Conventionally, when constructing a steel frame using columns and beams, it is common to weld a joint plate to the side surface of the upper end of the column and fasten and fix the ends of the beams to this joint plate with bolts or the like. Is.

Problems to be Solved by the Invention In the above-described conventional joining structure, when the joining plate is welded to the pillar on site, the man-hours for on-site construction are significantly increased,
Welding the joint plate to the pillar in advance and carrying it in to the site, however, when welding the joint plate to the pillar and projecting it, this joint plate protrudes greatly to the side, so the member is large. However, it has a drawback that it is difficult to carry out on-site work because the cost increases, the transportation cost increases, and the weight increases.

It is an object of the present invention to solve the above drawbacks and to provide a column-beam joint structure that is easy to transport and handle at the site.

Means for Solving the Problems In order to achieve the above object, the present invention includes a column end member attached to a column end portion made of a round steel pipe, and a beam end member attached to the beam end portion. , Between the column end member attached to the upper end of the column and the column end member attached to the lower end of the column on the upper floor of the column, the beam end members are arranged in the horizontal direction of the fitted parts of the column end members and the beam end member. And the through bolts in the vertical direction inserted through the through holes in the vertical direction of the respective pillar end members and inserted over the vertical pillar end members. It is characterized in that a nut screwed to the bolt is tightened from both sides in the vertical direction of the pillar end member, and the end member is tightened and fixed to the pillar side.

Action According to the above configuration, the column side and the beam side are joined to each other by tightening the nuts of the through bolts,
No welding work is required on site. Further, even when the pillar end member is fixed to the pillar side in advance by welding or the like and is carried in to the site, the end member does not largely project to the lateral side of the pillar, so that the pillar end member is easily transported.

EXAMPLE Hereinafter, the configuration of the present invention will be described based on the illustrated example in which the L-shaped corner portion is implemented. In FIGS. 1 and 2, (1) is a cloth foundation, and (2) is the cloth. An anchor bolt embedded in a foundation (1), wherein a grooved steel base (3) installed on a cloth foundation (1) is attached to the anchor bolt (2) at a lower flange (4) portion thereof. To fix.

(5) is a column made of round steel pipe, and an L-shaped substrate (6) is fixed to the lower end of the column (5). The substrate (6) is mounted with a bolt (7) as a base. This pillar (5) is erected by being fixed to the upper flange (8) of (3). (9)
Is a through bolt inserted into the pillar (5), and the lower end of the through bolt (9) penetrates the base plate (6) and the upper flange (8) and the upper flange (8) thereof.
On the lower surface of the above, a nut (10) screwed to a through bolt (9) is supported so as not to come out upward. (11)
(12) is a pair of upper and lower beam end members made of a tubular body. Each of the beam end members (11) and (12) has one joining plate (13) (14) in the vertical direction. One end of which is welded. Each joining plate (13) (14)
A plurality of bolt holes (15) (15) ... Are preliminarily formed in each. (16) is a pillar (5) and a beam end member (1
1) Has the same outer diameter as the outer diameter of (12) and has a through hole (1
9) is a ring-shaped pillar end member, and the pillar (5) and the beam end member (11) (12) are also provided on the upper and lower surfaces thereof.
Fitted part (17) with an outside diameter slightly smaller than the inside diameter of
(17) is integrally formed.

In such a structure, one pillar end member (16) is attached to the upper end of the pillar (5) erected as described above by inserting the fitted portion (17) below the pillar end member (16). , The lower end of the lower beam end member (11) is externally fitted to the fitted portion (17) projecting to the upper side of the lower end member (11) so that the inner diameter portion and the column end which are the circumferential portions of the beam end member (11). The beam end member (11) is stacked by joining the outer diameter portion of the fitted portion (17), which is the circumferential portion of the member (16), to each other. Further, to the upper part of the lower beam end member (11), similarly, another column end member (1
6) Insert and mount the mating part (17) on the lower surface, and fit the lower end of the second upper beam end member (12) onto the mating part (17) above the pillar end member (16). And stack. A similar column end member (16) is attached to the upper end of the beam end member (12) on the upper side, and a vertical through hole (at the center of each column end member (16) (16) (16)). 19) and the beam end members (11) (12), the upper end of the through bolt (9) is projected, and the long nut (18) screwed onto the upper end of the through bolt (9) Beam end members (11)
(12) is tightened and fixed. At that time, the joining plates (13) and (14) are orientated so that they are normally at right angles to each other according to the angle of the corners. In some cases, the beam end members (11) and (12) are horizontally rotated to set an appropriate angle of an acute angle or an obtuse angle.

Each beam end member (11) (12) mounted as described above
A pair of angle-shaped upper web members (21) (21) are arranged along the upper edge of the joining plates (13) (14) so as to sandwich the joining plates (13) (14).
Bolt holes (23) (23) formed in the vertical pieces (22) (22) of the web material (21) (21) and the joint plate (13)
Bolt hole (15) (15)… to bolt (2) on the upper side of (14)
4) is inserted to join the ends of the web materials (21) (21). Further, a pair of similar angled web members (25) (25) are similarly connected along the lower edges of the joining plates (13) (14). Reference numerals (26) and (27) shown in FIG. 2 are a vertical bundle and a diagonal abdominal material, respectively. These bundle materials (26) and abdomen material (27) are used as upper and lower web materials. (2
1) While being attached between (25) with bolts (28),
With this, the lattice beam (36) is configured.

The joining plates (13) (14) and the beam end members (11)
It is also conceivable to install (12) on the upper end of the column (5) integrally with the beam (36) in advance. The pillar end member (16) at the upper end of the pillar (5) may be integrated with the pillar (5) in advance.

Reference numeral (29) denotes a second-floor column having a base plate (30) fixed to the lower end thereof, and the lower end of the column (29) is fitted to the upper side fitted portion (17) of the uppermost column end member (16). ), And bolts are inserted and fixed in the bolt holes (33) (34) formed in the horizontal pieces (32) of the substrate (30) and the upper web members (21) (21). The through bolt (35) that is inserted into the pillar (29) for the second floor is the upper half of the long nut (18) whose lower end is screwed into the upper end of the through bolt (9) for the first floor. The beam end member is stacked on the upper end of the column (29) in the same manner as described above.

In the above embodiment, the case where it is applied to the L-shaped corner is shown.
For example, in the case of a T-shaped corner, as shown in FIG. 3, one of the beam end members, for example, the upper beam end member (12).
2, the joint plate (14) protruding in the opposite direction to the joint plate (14) of FIG. Also, in the case of a construction in which the beams connected to both joining plates (14) (14) are not necessarily aligned in a straight line, each joining plate (14) (14)
Weld at an angle. Such a thing is shown in FIG. Although the lower end of the through bolt (9) is fixed to the base (3) in the above embodiment, the upper end of the pillar (5) may be fixed.

EFFECTS OF THE INVENTION As described above, in the present invention, the end members on the beam side are arranged between the upper and lower pillar end members to be mounted on the pillar side and the bolts are fastened and fixed by bolts, and therefore it is not necessary to perform on-site welding. It is easy to join on-site. Also,
Not only when these end members are carried into the site separately from the columns or beams, but also when the column end members are fixed to the columns and the beam end members are respectively fixed to the beams in advance and carried into the site, the end members are Since the pillars or beams do not significantly project to the side, they are not bulky when loaded on a transportation vehicle, and thus transportation costs can be reduced and transportation is facilitated. Furthermore, since the beam end member can change the angle of the beam by rotating the beam end member horizontally and attaching the beam end member along the circumferential portions fitted to each other, the corner portion can be changed like a narrow land. When it cannot be taken at a right angle, there is an effect that the angle can be arbitrarily changed in accordance with it.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of an essential part showing an embodiment of the present invention, and FIG.
Similarly, FIG. 3 is an exploded perspective view of an essential part, and FIGS. 3 and 4 are perspective views showing modified examples of the beam end member. (5) …… Pillar, (9) …… Through bolt, (11) (12)…
… Beam end members, (13) (14) …… Join plates, (1
6) …… Column end member, (19) …… Through hole, (36) ……
Beams.

Claims (1)

[Claims] 1. A column end member mounted on the column end made of a round steel pipe, and a beam end member mounted on the beam end, and a column end member mounted on the column upper end and a floor above the column. The beam end member is mounted between the column end member attached to the lower end of the column and the fitted portion of the column end member and the horizontal circumferential portion of the beam end member with each other. A vertical through-bolt inserted through the vertical through-holes of the respective pillar end members and inserted over the upper and lower pillar end members, and a nut screwed to the through bolt, and the vertical direction of the pillar end member. Tightened from both sides of
A column-to-beam joint structure characterized in that the beam end member is fastened and fixed to the column side.