JPH08291560A - Column-beam joining part structure - Google Patents

Abstract

PURPOSE: To enhance tensile bearing force in a joining part by preventing deformation of a flange of a column steel frame and T flanges of split T metallic materials to be joined to it when beam steel frames in two directions are joined to the column steel frame by using the split T metallic materials. CONSTITUTION: Reinforcing metallic materials 5 are arranged so as to stride over between T webs 11 of split T metallic materials 1 to be joined to a web 31 of a column steel frame 3 and a flange 32 of the column steel frame 3. Both T flanges 22 of split T metallic materials 2 to be joined to the flange 32 are joined to the flange 32 of the column steel frame 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a column-beam joint structure in which a beam steel frame is joined to a column steel frame using a split T metal piece.

[0002]

2. Description of the Related Art Joining a beam steel frame and a column steel frame using a split T metal object is a split T
It is performed by stacking the metal tea web on the flange of the beam steel frame and the tee flange on the flange and the web of the column steel frame and bolting them together.

The bolt penetrating the tee flange bears the tensile force from the beam steel frame, but for the split T metal object joined to the flange of the column steel frame, it is transmitted from the bolt to the flange of the column steel frame. As the tensile force increases, the flange of the column steel frame is likely to be out-of-plane deformed in a curved shape together with the tee flange as shown in FIG. 7. If the flange of the column steel frame is deformed, the bolt cannot work to the full axial force and the proof stress of the joint decreases. Further, the split T metal fitting 12 mounted in the weak axis direction of the column in FIG. 1 does not exhibit sufficient proof strength because the column steel frame web is easily deformed out of plane.
From the above, the places where the split T hardware is used are limited.

Even when the bolts are arranged in several steps in the height direction for the purpose of increasing the proof strength of the joint, if the tee flange is deformed first, a large load is applied to the bolt near the tee web as shown in FIG. Since the outer bolts do not contribute to the proof stress of the joint so much, the sufficient proof stress cannot be obtained.

The present invention proposes a joint structure for preventing the deformation of the flange of the column steel frame and the web from the above background.

[0006]

According to the present invention, a reinforcing metal fitting is installed across a tee web of a split T metal object to be joined to a pillar steel frame web and a flange of the column steel frame, and the reinforcing metal fitting is joined to both of them. Deformation of the flange and the web of the pillar steel frame is prevented, and the tensile strength at the joint between the split T hardware and the pillar steel frame is improved.

The reinforcing metal member is joined to the flange of the pillar steel frame together with the tee flange of the split T metal member which is joined to the flange of the pillar steel frame. By being joined to the flange of the column steel frame together with the tee flange of the split T hardware, the plate thickness of the flange of the column steel frame is increased and bending rigidity is increased at the position where the tensile force acts in that direction, and its out-of-plane deformation is prevented. To do. At the same time, the reinforcing metal member is also bonded to the split T metal member that is bonded to the pillar steel web, thereby restraining the deformation of the pillar steel web. By restraining the deformation of the flange of the pillar steel frame and the web, the axial force of the bolt that joins the tee flange of the split T metal piece is exerted.

By restraining the deformation of the flange of the column steel frame, when a plurality of bolts are used, the tensile force acting on the split T metal is transmitted to all the bolts penetrating the tee flange and shared. It Since all bolts resist the tensile force of the split T hardware, the tensile strength at the joint between the split T hardware and the column steel frame is improved. As a result, the tensile strength of the joint can be adjusted by setting the number of bolts, and the applicable range of the split T metal object is expanded.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention, as shown in FIGS.
In the joint portion where the beam steel frames 4 in two directions are joined to each other by using the split T metal fittings 1 and 2 which are respectively bolt-bonded to each other, the tee web 11 of the split T metal fitting 1 joined to the web 31 of the pillar steel frame 3, The flange 32 of the pillar steel frame 3 is stiffened by the reinforcing metal 5 that is joined to both sides of the flange 32 of the pillar steel frame 3.

The tee flange 12 of the split T hardware 1 and the tee flange 22 of the split T hardware 2 are joined to the web 31 of the column steel frame 3 and the flange 32, respectively, with bolts 6,
The tee webs 11 and 21 of both split T hardware 1 and 2 are bolted to the flange 41 of the beam steel frame 4.

As shown in FIGS. 3 to 5, the reinforcing metal member 5 is a split T metal member that is joined to the web 31 and a stiffening plate 51 that stiffens the flange 32 by overlapping the inner peripheral surface of the flange 32 of the pillar steel frame 3. The joining plate 52 which is joined to the tee web 11 of No. 1 has an L-shape or a T-shape, and is joined to the flange 32 together with the tee flange 22 by a bolt 6 penetrating the tee flange 22 of the split T metal piece 2. It Reinforcing hardware 5
Is a split T hardware 1 that is joined to the web 31 of the pillar steel frame 3.
Since it straddles the tee web 11 and the flange 32 of the
The shape may be an L shape having plates in two directions from 51 and the joining plate 52, but in the case of reinforcing the tee flange 22 of the split T metal piece 2 with one reinforcing metal piece 5 as in the embodiment, It becomes T-shaped. The cross-sectional shape of the pillar steel frame 3 is H-shaped, T-shaped, or a similar shape because the reinforcing metal 5 overlaps the flange 32 from the inner peripheral side.

The reinforcing metal 5 stiffens the flange 32 and restrains the deformation so that all the bolts 6 penetrating the tee flange 22 of the split T metal 2 share the tensile force acting on the split T metal 2. do. As shown in FIGS. 3 and 4, when a tensile force is applied from the tee web 21 of the split T hardware 2 and the tee web 21 side of the tee flange 22 floats from the joint surface with the flange 32, the flange
Since the tee flange 22 tries to maintain the flat state by the stiffening plate 51 which restrains the out-of-plane deformation of the tee flange 32 and the tee flange 22, the bolts 6 are arranged in two stages on one side of the tee web 21 as shown in FIG. In this case, the tensile force acts evenly on the bolts 6 outside the tee web 21, and all the bolts 6 effectively resist the tensile force. FIG. 3 shows the case where the number of bolts 6 on one side of the tee web 21 is one, and FIG. 4 shows the case where the number of bolts 6 is two.

As shown in the embodiment, the flange 3 of the pillar steel frame 3
When the split T metal fittings 2 and 2 are joined to one another in opposite directions in one direction, it is necessary to reinforce each flange 32, 32. Therefore, the split T metal fitting 1 to be joined to the web 31 has two pieces. The reinforcing metal members 5 and 5 are joined vertically with the tea web 11 sandwiched therebetween. In this case, the stiffening plate 51 of the reinforcing metal 5 is formed longer on one side by the thickness of the tee web 11.

[0014]

[Effects of the Invention] A tee web of a split T metal object which is joined to a web of a pillar steel frame, and a reinforcing metal object installed over a flange of the pillar steel frame, and a tee flange of a split T metal object which is joined to the flange of the pillar steel frame. Since it is a structure that prevents deformation of the flange of the pillar steel frame by joining together with it, and at the same time prevents deformation of the web of the pillar steel frame by restraining deformation of the tee flange of the split T metal object that is joined to the flange, It is possible to effectively exert the axial force of.

As a result, when a plurality of bolts are used, the tensile force can be shared by the plurality of bolts, so that the tensile strength at the joint between the split T metal member and the pillar steel frame is improved, and the number of bolts is increased. By setting the above, it is possible to adjust the tensile strength of the joint, so that the applicable range of the split T metal object is expanded.

[Brief description of drawings]

FIG. 1 is a perspective view showing a relationship between a split T metal piece and a reinforcing metal piece in two directions.

FIG. 2 is a plan view of FIG.

FIG. 3 is an elevational view showing a state of deformation in the case where there is one bolt penetrating the tee flange.

FIG. 4 is an elevational view showing a state of deformation when there are two bolts penetrating the tee flange.

5 is a side view of FIG. 1. FIG.

FIG. 6 is a perspective view showing a relationship between a split T hardware, a beam steel frame, and a column steel frame.

FIG. 7 is an elevational view showing how the tee flange is deformed when the number of bolts is one.

FIG. 8 is an elevational view showing how the tee flange is deformed when the number of bolts is two.

[Explanation of symbols]

1,2 ... Split T hardware, 11,21 ... Tee web, 12,22 ... Tee flange, 3 ... Column steel frame, 31 ...
Web, 32 ... Flange, 4 ... Beam steel, 41 ... Flange, 5 ... Reinforcing hardware, 51 ... Stiffening plate, 52 ... Joining plate, 6
……bolt.

Claims (1)

[Claims] 1. A joint structure in which a beam steel frame in two directions is joined to a column steel frame by using a split T metal article that is bolted to each of the column steel frames, and a T-web of a split T metal article that is joined to a web of the column steel frame. A split T in which a reinforcing metal member is straddled between the flanges of the pillar steel frame and is joined to both sides, and the reinforcing metal member is bonded to the flange of the column steel frame and to the flange of the column steel frame.
A column-beam joint structure characterized by being joined together with a metal tee flange.