JPS6233845Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention relates to a column-to-column joining device at the beam joint of a steel frame consisting of steel columns and steel beams, and in particular to a beam joint suitable for constructing a steel rigid frame. This article relates to a column-to-column rigid joint device in the section.

PRIOR ART In the past, in steel frames consisting of steel columns and steel beams, it was sometimes necessary to join the upper and lower columns in addition to joining the columns and beams. Particularly when extending an upper floor, it was necessary to later connect the upper column above the lower column.
In this case, the connections between the upper and lower steel columns are mainly made by welding.

There are also examples of using square cross-section joint hardware for columns and column joints at beam joints, but this is not suitable for joining columns.

Problems to be Solved by the Invention However, the above-mentioned general welding method of joining has the disadvantage that it is generally difficult to perform work with high precision on-site, and it also requires a large amount of work on-site.

This idea was proposed to solve the above-mentioned conventional problems.It eliminates on-site welding work as much as possible, greatly reduces the amount of work, and allows for beam joints that can be extremely easily made into rigid joints on-site. The purpose is to provide a column/column joining device.

Structure of the invention The structure of this invention is as described in the claims for utility model registration, and includes a joining metal fitting with a rectangular cross section, which has a female threaded hole opening on the top surface in the upper thick part, and a beam is to be connected to the side surface. A joining hardware having a cross section and a joining plate at the lower end is used, the joining hardware having the rectangular cross section is attached to the lower pillar, and the joining hardware having a cross section attached to the lower part of the upper pillar is mounted on the joining hardware. A bolt inserted through the joint plate is screwed into the female threaded hole for rigid connection.

Example Upper and lower steel columns 1, 2, H with square cross sections to be joined
Among the steel beams 3 having a shaped cross section, a joining hardware 4 is attached in advance to the upper end of the lower steel column 1 by welding in a factory or the like.

The joining hardware 4 is formed by casting into a rectangular cross-sectional shape that is approximately the same size as the cross-sectional shape of the lower steel column 1, and
Moreover, it is formed to be thick overall, and the corner portions at the upper end are formed to be even thicker.

A screw hole 5 is formed at a constant depth in the upper end surface of the thick upper portion of each corner of the metal joint 4, and a plurality of screw holes 6 are formed in the four side surfaces.

A joining metal fitting 7 is previously attached to the lower end of the upper steel column 2 by welding in a factory or the like.

The joining hardware 7 includes a joining plate 8 having almost the same dimensions as the cross-sectional shape of the joining hardware 4, and a thick cross-shaped cross section 9.
and a rectangular cross section 10 welded to the upper steel column 2, which are integrally formed by casting.

Further, bolt holes 11 are formed in each corner of the joining plate 8.

An end plate 12 is attached to the end of the steel beam 3 by welding.
A plurality of bolt holes 13 are formed in the.

In such a configuration, the joining plate 8 of the joining hardware 7 is butted against the upper end surface of the joining hardware 4, and high-strength bolts are inserted into the screw holes 5 that open at the upper end surface of the joining hardware 4 through the bolt holes 11 at each corner of the joining plate 8. By screwing in 14, the upper and lower steel columns 1 and 2
are rigidly connected. Since each side corner of the metal joint 7 is not closed, the high-strength bolt 14 can be tightened.

In addition, the end plates 12 of the steel beam 3 are butted together below the thick wall portion of the side surface of the metal joint 4, and the high-strength bolts 15 are screwed into the screw holes 6 of the metal joint 4 through the bolt holes 13 of the end plates 12. By doing so, the upper and lower steel columns 1 and 2 and the steel beam 3 are rigidly connected.

FIG. 4 shows another embodiment of this invention, in which high-strength screws 16 are screwed into the screw holes 5 at each corner of the upper end surface of the joining hardware 4, and the high-strength screws 16 are inserted into the joining plate. The upper and lower steel columns 1 and 2 are rigidly connected by inserting them into the bolt holes 11 of No. 8 and screwing fixing nuts 17 into the penetrating portions of the high-strength screws 16.

Effects of the invention This invention consists of the above structure and has the following effects.

When connecting upper and lower steel columns, if two types of joint hardware are attached to the steel columns by welding in advance at a factory, etc., there is no need for welding or connection plates at the site, and only high-strength bolts can be used. Columns can be rigidly connected extremely easily.

Further, since the female threaded hole that opens on the upper surface of the joint metal piece having a rectangular cross section is formed in the upper thick part, the weight of the joint metal piece does not become excessive.

The joint hardware having a cross-shaped cross section has a structure in which the corner portions of the side surfaces are not closed, so that bolt joints can be performed by inserting the joint plate at the end face.

[Brief explanation of the drawing]

Figures 1 and 4 are cross-sectional views showing the state of connection between upper and lower steel columns, Figures 2 and 3 are cross-sectional views taken along lines - and - in Figure 1, and Figures 5 and 6 are joint hardware. FIG. 1, 2... Upper and lower steel columns, 3... Steel beams, 4, 7
...Joining hardware, 5, 6...Screw hole, 8...Joining plate, 9...Cross cross section, 10...Square cross section, 11, 13...Bolt hole, 12...End plate, 14, 15...High strength bolt.

Claims (1)

[Scope of utility model registration request] In the upper and lower steel columns with square cross sections to be joined, a thick wall is provided at the top of the lower steel column, and the beam is joined to the side surface of the upper thick wall that has a female screw hole that opens on the top surface. A joining hardware with a square cross section is attached, and a joining hardware having a cross section and a joining plate with bolt insertion holes formed at the lower end is attached to the lower part of the upper steel column, and is connected to the joining hardware with a rectangular cross section. A column-column connecting device for a beam joint, characterized in that the upper and lower steel columns are joined by stacking plates and screwing the bolts inserted through the bolt insertion holes into the female screw holes on the end faces thereof, thereby joining the upper and lower steel columns. .