JPH0441734B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a column-to-beam joining device in a square steel pipe column.

[Conventional technology]

One of the joining methods when joining a beam such as H-beam steel to a square steel pipe column (hereinafter referred to as a column) is:
For example, there is a method of joining columns and beams with bolts using a joining member as shown in Japanese Utility Model Application Publication No. 57-150106. That is, in the joining device disclosed in the same publication, a joining member is inserted into the inner surface of the joining end of a column, the joining end is formed to be thicker than the wall of the pillar, and the end plate fixed to the end of the beam and the above-mentioned The joint ends of the thick pillars or the joint members are tightened with bolts using bolt holes in the end plates and screw holes in the joint members. In this case, the upper and lower columns are joined by welding. Further, the joining member may be inserted into the inner surface of the end of either the upper or lower column, or may be inserted so as to hang on the inner surface of the end of both the upper and lower columns.

[Problem that the invention seeks to solve]

The above-mentioned joining device consists of splints that apply the joining members to each of the four inner surfaces of the column, so even if the splint is entirely formed into a hollow body that is inserted into the inner surface of the column. In both cases, the joining members on each side are not rigid bodies, but merely have the function of increasing the wall thickness of the joining ends of the pillars. Therefore, when using such a joining member to join beams with bolts, the only way to effectively transmit the force from the flange of the beam to the column is to make the joining member considerably thick. However, simply increasing the plate thickness of the bonding member poses great concerns in terms of strength. In particular, since there is nothing that crosses the column at the position corresponding to the flange of the beam, the problem is whether the large force from the beam can be smoothly transmitted to the column.

The present invention has been made to solve such problems.

[Means for solving problems]

A column-to-beam joining device according to the present invention connects the beam to the side surfaces of both columns at the joint ends of the upper and lower columns via end plates, and has a diaphragm portion inside. It is equipped with integral joint hardware that is inserted into the inner surface, and is made by joining the column, beam, and joint hardware together with bolts, with the diaphragm part aligned with the extension of the flange of the beam. .

[Effect]

In the present invention, the joint metal fittings inserted into the inner surface of the joint end of the column are formed as one piece, and the diaphragm part is located on the extension of the flange of the beam, so that a large force from the flange of the beam is passed through the diaphragm part. Smooth transmission to the pillar.

〔Example〕

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a longitudinal cross-sectional view of an embodiment of the present invention, and FIG. 2 is a cross-sectional view thereof. Moreover, FIG. 3 is an exploded perspective view of the joint portion. In the figure, 1 and 2 are the upper and lower columns to be joined, and the abutting ends 3 can be simply left mechanically abutted, or the entire circumference can be welded to make it stronger, depending on the site situation. Measures may be taken to ensure a secure connection. Reference numeral 4 denotes a beam joined to the side surfaces of the butt ends of the columns 1 and 2, and is made of H-beam steel or the like. An end plate 5 is fixed to each end of the beam 4 so as to be tightly joined to the side surfaces of the abutting ends of the columns 1 and 2. Reference numeral 6 denotes joint metal fittings that are inserted into the inner surfaces of the joint ends of the columns 1 and 2, and in the case of the illustrated example, they are made of integrally molded cast steel metal fittings. Incidentally, the joining metal fitting 6 can also be made integrally from a plate material by welding or the like. Reference numeral 7 denotes a diaphragm portion provided inside the joining metal fitting 6. That is, the diaphragm portion 7 is a diaphragm that connects the peripheral walls of the metal fitting 6 to each other. Therefore, the joining metal fitting 6 has an H-shaped vertical cross section due to the diaphragm portion 7. Numeral 8 is a bolt for joining the beam 4 to the columns 1 and 2, and a high-strength bolt is usually used. A plurality of bolt holes 9, 10 for inserting bolts 8 are provided at the joint ends of the end plate 5 of the beam 4 and the columns 1, 2. Further, screw holes 11 for screwing into the bolts 8 are provided in the joint hardware 6 at positions corresponding to the bolt holes 10 of the columns 1 and 2, and these bolt holes 10 and screw holes 11
is provided so that the diaphragm portion 7 is located on an extension of the flange 4a of the beam 4.

Therefore, a beam 4 is attached to the side surface of the butt end of columns 1 and 2.
When the end plates 5 are tightened and joined with the bolts 8, the diaphragm part 7 of the joining hardware 6 is located on the extension of the flange 4a of the beam 4, so that the large tensile and compressive forces acting on the flange 4a are absorbed into one piece. It can be smoothly transmitted to the pillars 1 and 2 through the diaphragm part 7 of the joint metal fitting 6. As a result, the thickness of the joint metal fitting 6 can be reduced.
In the above embodiment, a case where a beam is joined to a column in an L-shape is shown, but the same applies to a T-shape, a cross-shape, etc. Further, the joint metal fitting 6 may be inserted into the inner surface of the joint end of the column and then fixed by spot welding, or may be temporarily fixed with a bolt using the screw hole 11 thereof. Furthermore, instead of welding the butt ends, splints 12 may be used to join the columns.

〔Effect of the invention〕

As described above, according to the present invention, when a beam is connected to the side surfaces of both columns via an end plate at the joint ends of the upper and lower columns, it is inserted into the inner surface of the joint end of each column on the extension of the flange of the beam. Since the diaphragm portions of the joined metal fittings are aligned, the large force from the flange of the beam can be smoothly transmitted to the column through the diaphragm portion, which is safe in terms of strength. Moreover, this allows the joining hardware to be formed thin, contributing to material savings and weight reduction. Another advantage is that beams can be efficiently joined to the joint ends of columns using only bolts.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view of an embodiment of the present invention, FIG. 2 is a cross-sectional view thereof, and FIG. 3 is an exploded perspective view of a joint. 1, 2: Column, 4: Beam, 5: End plate,
6: Joining hardware, 7: Diaphragm part, 8: Bolt, 9, 10: Bolt hole, 11: Screw hole.

Claims (1)

[Claims] 1. A device for joining a beam to the side surfaces of both columns at the joining ends of upper and lower pillars via an end plate, the device having a diaphragm part inside, and having a diaphragm part inside, and an inner surface of the joining end of the upper and lower pillars. The upper and lower pillars, the beam, and the joint metal parts are integrally joined by bolts, with the diaphragm part being aligned with the extension of the flange of the beam, and each having an integral metal joint that is inserted into the beam. Column and beam joining device featuring: