JPS6046224B2 - Column-to-column connection unit - Google Patents

Description

[Detailed description of the invention] The present invention relates to a column-to-column connection unit.

When connecting two steel columns by on-site welding, it is necessary to temporarily fasten both steel columns. Therefore, in the past, cassette plates were welded to both sides of the upper end of the flange of the lower column and to both sides of the lower end of the flange of the upper column, and after the columns were connected, both cassette plates were welded to the connecting plate. The upper column was temporarily fixed to the lower column by connecting it with bolts. After temporary fixing, an end tab was welded to the flange in the opposing gap of the cassette plate, and a backing material was used to build up the root spacing between the upper and lower columns and welding was performed. However, according to the connection structure of this column, the size and pitch of the bolts are fixed, so
The cassette plates and connecting plates are large, which requires a large amount of steel, and sometimes the cassette plates have to be cut after they are connected, resulting in high costs and time-consuming connection work. In addition, since the bolts are used for attachment, the temporary fixing work is troublesome, and in addition, the end tabs must be welded, making the work of connecting the columns even more complicated, which poses a problem in terms of work efficiency. The purpose of the present invention is to simplify and speed up the work of connecting columns;
An object of the present invention is to provide a column-to-column connection unit that can reduce the amount of steel material.

An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, an upper column 2 of the H-section steel is mounted on a lower column 1 of the H-section steel with a root spacing 3 between the first connecting members 4, 4a and the second connecting members 5, 5a. Standing up in a temporarily secured position.

Here, the first connecting members 4, 4a and the second connecting members 5, 5
The specific configuration of a will be explained.

The first connecting members 4 and 4a are welded to both sides of the upper end of the flange 1a of the lower column 1.

The structure of one first connecting member 4 will be explained based on FIGS. 2 to 4. The connecting member 4 has a predetermined thickness, has a stepped portion 6 as shown, and is further provided with an engaging recess 7 at the outer end of the upper surface (the left end in FIG. 2). An end tab 8 is located inside the center of the upper end of the connecting member 4.
is protruding from the front (right side in Figure 4). The structure of the other first connecting member 4a is also substantially the same as that of the above-mentioned connecting member 4, and corresponding components are designated by the symbol "a" in the connecting member 4.
(Figure 1).

Further, the second connecting member 5 will be explained based on FIGS. 2 to 5.

Note that the configuration of the connecting member 5a is substantially the same as that of the connecting member, so a description of the configuration will be omitted. Second connection member 5
is welded to the side surface of the flange 2a of the upper column 2, and this member has substantially the same thickness and overall shape as the first connecting member 4, and has a stepped portion 9 formed in its center.

The lower surface of the connecting member 5 is joined to the upper surface of the first connecting member 4, and the protrusion 10 provided at the outer end of the lower surface of the connecting member 5 (the left end in FIG. 2) engages with the engagement recess 7. and both connecting members 4
, 5 are being positioned. Further, the inner lower surface of the connecting member 5 faces the inner upper surface of the first connecting member 4 with a constant gap 11 therebetween, and this gap has approximately the same width as the root interval 3 and is continuous with this interval. The second connecting member 5 is provided with an end tab 8 of the first connecting member 4 across this gap 11.
An end tab 12 is provided to protrude forward at a position opposite to. By means of these end tabs 8 and 12, the flange 1a
, 2a changes, welding with a root spacing of 3 is possible. The area from the end tab 12 to the lower surface of the connecting member 5 is inclined, and the inclined surface 13 is the groove surface 2 of the flange 2.
The inclination angles of b are the same. Further, as shown in FIGS. 2, 3, and 5, a connecting member 14 is fitted into the step portions 6 and 9 from the outside on the outer side of the first connecting member 4 and the second connecting member 5, and
The joint between both connecting members is fixed.

This connecting member 14 is located at the center. A coupling hole 15 is provided inside. The other connecting members 4 and 4a are also fixed by a connecting member 14a having substantially the same structure as the connecting member 14, as shown in FIG. 15a is a binding hole.

Reference numeral 16 denotes a backing material that covers the root interval 3 and the back surface of the gaps 11 and 11a (FIGS. 2 and 3).

Next, we will explain the pillar connection work. As shown in FIG. 1, the upper column 2 is hoisted onto the lower column 1 by a crane or the like, erected, the second coupling members 5 and 5a are joined to the first coupling members 4 and 4a, respectively, and the engagement recesses are formed. The upper pillar is positioned by engaging the protrusions 10, 10a in the inner parts 7, 7aa.

Then, the connecting members 14 and 14a are respectively fitted to the outer peripheries of the connecting members 4 and 5, 4a and 5a which are in a joined state, and the joint is fixed. As a result, columns 1 and 2 are temporarily fixed. A backing material 16 is then welded to the back of the flange 2a to cover the root spacing 3 and the back of the gaps 11, 11a. And from this one gap 11 to the root gap 3,
Furthermore, welding is performed sequentially up to the other gap 11a, and the columns 1 and 2 are welded together. As explained above, according to the present invention, since bolts are not used as the connection structure unlike in the past, the amount of steel material can be reduced, and the connection work can be made simple and quick.

Since the work of welding the end tabs becomes unnecessary, the connection work can be performed more efficiently. ″

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention. Fig. 1 is a front view showing a temporarily fixed state of the pillar, Fig. 2 is an enlarged partially cutaway front view of the main part, and Fig. 3 is a partially cutaway enlarged front view of the main part. FIG. 4 is a sectional view taken along the line ■-■ in FIG. 2, and FIG. 5 is a sectional view taken along the line ■--■ in FIG. 1...Lower column, 2...Upper column, 3...
... Root interval, 4, 4a... First connecting member,
5, 5a... Second connection member, 7, 7a...
...Engagement recess, 8, 8a, 12, 12a...End tab, 10, 10a...Protrusion, 11, 11
a...Gap, 14, 14a...Connection member.

Claims (1)

[Claims] 1. An upper column that stands up on the lower column with a root interval, a first connecting member attached to both sides of the upper end of the lower column, and a first connecting member attached to both sides of the lower end of the upper column. a second connecting member that joins together to ensure the root spacing; a connecting member that fits from the outside into the first and second connecting members to be joined to fix the connection of the connecting members; and the first and second connecting members. an end tab protruding from the member, the inner upper surface of the first connecting member and the inner lower surface of the second connecting member face each other with a constant gap, this gap is continuous with the root interval, and the end tab A column-to-column connection unit, characterized in that the columns face each other with the above-mentioned gap in between.