JPS6349777B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a steel column beam joint structure for attaching a beam to a steel column.

Conventionally, there are two types of steel column-beam joint structures: the column-penetrating type shown in Figure 1 and the beam-penetrating type (not shown). Beams and columns were connected. In the case of the through-column type shown in Figure 1, this joining work involves welding the joint part B to the pillar A in advance at a factory, etc., and attaching the beam D to the joint part B with bolts C, etc. on site. There is. When welding a joint part to a column in this factory, etc., the web and flange of the joint part were brought into contact with the flange part and weave part of the column.

However, the conventional steel beam-column joint structure has the following problems when welding the joint part.

Beveling of column or beam flanges and bevelling of rib plates are required.

Butt welding of the flange is required by making a connection through the beam.

A backing metal for butting or scalloping E shown in FIG. 1 is required to avoid welding intersections.

Because there are many welding points, work efficiency is poor, and assembly accuracy affects the quality of the immediate product.

This invention was proposed to address the above-mentioned problems, and its purpose is to divide the steel frame column-beam joint structure into a column part, a joint panel part, and a joint part, and to create a structure in which these parts are assembled. Accordingly, it is an object of the present invention to provide a joint structure with high working efficiency, since bevel processing and scallop processing of the web, flange, and end tab do not require alignment when attaching the joint portion.

The present invention will be explained below with reference to illustrative embodiments.

The steel column beam joint 1 is connected to a lower column 2 of cruciform steel,
A connection panel section 3 provided on the upper end surface of this lower column section 2, an upper column section 4 of a cross-shaped steel provided on the upper end surface of this connection panel section 3, and a connection panel section 3
It consists of joint parts 6 of H-beam steel attached to flanges 5 located on all four sides. (See FIG. 2) The joint panel section 3 consists of a base 7 made of cross-shaped steel and diaphragms 8, 8 provided at both upper and lower ends of the base 7. The diaphragms 8, 8 are provided so as not to touch the upper and lower end surfaces of the four-sided flange 5 of the base 7.

The flange 9 of the lower column part 2, the upper and lower diaphragms 8, 8, and the flange 5 of the joint panel part 3
The space 13 surrounded by the flange 10 of the upper column part 4 and the flange 11 of the joint part 6 attached on all sides is welded by consumable nozzle electroslab welding or electrogas welding. , is integrated.

When assembling the steel frame column-beam joint 1 having such a configuration, the lower column 2 is assembled as shown in FIG.
Then, the parts divided into the joint panel part 3, the upper column part 4, and the joint parts 6 located on all sides are assembled in sequence.

First, the joint panel section 3 is temporarily installed on the upper end surface of the lower column section 2. At this time, the upper end surface of the flange 9 of the lower column part 2 and the flange 5 of the joint panel part 3 are placed in opposing positions.

Similarly, the flange 10 of the upper pillar part 4 is aligned with the flange 5 of the joint panel part 3, and the upper pillar part 4 is temporarily installed on the upper end surface of the joint panel part 3. (See Fig. 4) Next, the four-way flanges 5 of the joint panel part 3, the flanges 9 located on the four sides of the lower column part 2, the flanges 10 located on the four sides of the upper pillar part 4, and the four-way flanges 5 of the joint panel part 3.
The space surrounded by the flanges 5, 9, 10, 11 and the diaphragms 8, 8 by bringing the flange 11 of the joint part 6 into contact with the groove 12 surrounded by the diaphragms 8, 8 and the flange 5. Temporarily installed so that the section 13 is formed. There are four spaces 13 when viewed from the front. (See FIG. 5) By bringing the flange 11 of the joint part 6 into contact with this groove part 12, the facing joint parts 6, 6 can be positioned on the same line.

Next, as shown in FIG. 6, the backing metals 14 are set in two pieces each holding the web part at each space 13, for a total of six pieces, and since there are eight spaces 13 on the front side, a total of 48 pieces are set. Then, as shown in FIG. 7, a start tab 15 is set at one end of each space 13.

This start tab 15 has cutout portions 15a corresponding to the flanges 10, 9 of the upper and lower pillar portions 4, 2 and the flange 11 of the joint portion 6, and a round recessed portion 15b on the contact surface of the space portion 13. are provided for each.

Next, the space 13 is welded by consumable nozzle electroslag welding or electrogas welding. To explain the case of electrogas welding with reference to FIG. 8, the welding nozzle 17 having the wire 16 is inserted into the space 13 up to the round recess 15b of the start tab 15, and the copper sliding abutment in which the cooling water 18 circulates is inserted. 19 is brought into contact with the notch 15a of the start tab 15.

Then, the welding nozzle 17 is pulled out and the copper sliding stopper 19 is slid to connect the flanges 10, 9 of the upper and lower pillar parts 4, 2, the flange 5 of the joint panel part 3, and the diaphragms 8, 8 and the joint part 6. The flange 11 is welded. This welding work can be performed simultaneously on four spaces 13 when viewed from the front.

Then, the space portion 13 is welded to integrate the upper and lower pillar portions 4, 2, the joint panel portion 3, and the joint portion 6.

Note that the backing metal 14 used here can be made of copper or steel. Furthermore, in the case of electroslag welding, it is not necessary to use a sliding butt and to process the flanges 9 and 10 into a tapered shape.

The present invention has the above configuration and has the following effects.

By assembling and welding each part of the upper and lower columns, joint panels, and joint parts, butt welding is not performed, so it is easy to prepare bevels for flanges and webs of columns or beams, butt backing, and welding intersections. There is no need for scalloping.

The thickness of the flange can be changed freely.

Alignment and welding work can be performed efficiently at each part, and the column-beam joints can be manufactured easily, reliably, and efficiently.

[Brief explanation of the drawing]

Figure 1 is a perspective view showing a conventional steel beam-column joint;
Fig. 2 is a perspective view showing the steel beam-column joint of the present invention, Fig. 3 is a front view showing the steel-column-beam joint of the invention before assembly, and Fig. 4 shows the lower column and the joint panel. , a front view showing a state in which the upper column part is temporarily installed;
Figure 5 is a front view showing the state shown in Figure 4 with the joint part temporarily installed, Figure 6 is a front view showing the state shown in Figure 5 with the backing metal set, and Figure 7 is the start tab. Enlarged perspective view of part F showing the set state, No. 8
The figure is an enlarged front view of section G showing a state in which the welding nozzle is inserted. A... Pillar, B, B'... Connection part, C... Bolt,
D...beam, E...scallop, 1...steel column beam joint, 2...lower column part, 3...joint panel part, 4...
...Upper pillar part, 5...Flange, 6...Shipping part, 7...
... Base, 8, 8 ... Diaphragm, 9 ... Flange, 10 ... Flange, 11 ... Flange, 12
...Groove, 13...Space, 14...Backing money, 1
5... Start tab, 15a... Notch, 15
b...Round recess, 16...Wire, 17...Welding nozzle, 18...Cooling water, 19...Copper sliding reserve,
20...Taper, 21...Gas distribution hole.

Claims (1)

[Claims] 1. A joint panel section that is a column-beam joint in a steel frame structure, with diaphragms provided at both the upper and lower ends of the shaped steel, and both upper and lower columns provided on the top and bottom surfaces of the diaphragm of this joint panel section. and,
and a joint part provided on the flange of the joint panel part, and a space surrounded by the upper and lower pillar parts and the flange of the joint part, and the diaphragm and flange of the joint panel part is welded. A steel column-beam joint structure characterized by being integrally formed.