JPH0629283Y2 - Connection structure of columns and beams - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a joint structure between a rectangular steel pipe column and an I-shaped steel beam of a building such as a house.

"Prior Art" As a joining technique of a square steel tubular column and an I-shaped steel beam, for example, the technique described in Japanese Patent Publication No. 61-58620 is known.

This aims to improve the joining technology that was conventionally performed using brackets when joining steel pipe columns and steel beams.Welded a joint box to the top of the column to attach it, and used no bracket at all. Instead, the joint box that constitutes a part of the pillar and the steel beam are to be joined by a bolt.

[Problems to be solved by the invention] However, in the above-mentioned structure, the steel beam is hung on site by using a crane or the like, and the plurality of screw holes of the joint box and the bolts of the steel beam are suspended. The bolt cannot be screwed in unless all the insertion holes for insertion are aligned. In this case, if you try to insert the bolt by force when these multiple screw holes and the insertion holes do not all match exactly, the threads of the screw holes will be destroyed, resulting in a sufficient joint strength. There is a problem that can not be obtained. In addition, it is not easy to accurately guide a heavy steel beam with a crane so that the screw holes and the insertion holes are all aligned, which not only contributes to the improvement of construction efficiency, but also the scaffolding. There is a problem that only work under unstable conditions is dangerous.

The present invention has been made under the background described above, and an object thereof is to provide a joint structure of a column and a beam, which can obtain sufficient joint strength and is excellent not only in construction efficiency but also in safety. I am trying.

[Means for Solving Problems] The joint structure of a column and a beam of the present invention includes a rectangular steel pipe column formed by joining an upper steel pipe column and a lower steel pipe column, and an upper steel pipe column and a lower steel pipe column. A joint structure of a column and a beam composed of connected I-shaped steel beams, wherein a mounting plate joined to a side surface of the rectangular steel tubular column is fixed to an end portion of the I-shaped steel beam. Is formed by joining the lower end of the upper steel pipe column to the upper end of the lower steel pipe column, and corresponds to the distance between the flanges of the I-shaped steel beam on the side faces near the upper end of the lower steel pipe column and near the lower end of the upper steel pipe column. A pair of upper and lower brackets are fixed to each other with a space, and the bracket and the mounting plate are used to insert bolts at positions corresponding to the screw holes formed in the side surface of the square steel plate column and the flange of the I-shaped steel beam. An insertion hole is formed, and the I-shaped steel beam is attached to the upper and lower brackets. While holding each flange of the I-shaped steel beam, bolts are screwed into the screw holes from the insertion holes to connect the upper and lower steel tubular columns to each other, and the steel tubular column and the I-shaped steel beam are connected to each other. It is made by joining.

"Embodiment" FIG. 1 and FIG. 2 are views showing an embodiment of the present invention, and the joining structure shown in these drawings is a pair of upper and lower steel pipe columns 1a and 1b having a rectangular cross section and these steel pipe columns. It is composed of I-shaped steel beams 2 and 2 connected to 1a and 1b.

Of the steel pipe columns 1a and 1b, at the upper end portion of the lower steel pipe column 1a, as shown in FIG. 2, there is a square tubular joint metal fitting 3 having a size to be fitted into the steel pipe columns 1a and 1b. It is fixed, and a part of it sticks out from the upper end of the steel pipe column 1a. The projecting portion of the joining metal fitting 3 is fitted to the lower end of the upper steel pipe column 1b so that the lower steel pipe column 1a and the upper steel pipe column 1b are temporarily joined together. These steel pipe columns 1a, 1b
A plurality of screw holes 5, 5, ... For screwing the bolts 4, 4, ... Are formed on the respective side surfaces in the vicinity of the end portion of the.

Brackets 6, 6 ... Are fixed to the outer surface of each of the upper end of the lower steel pipe column 1a and the lower end of the upper steel pipe column 1b. The bracket 6 includes a substrate 7 fixed to the outer surface of the steel pipe columns 1a and 1b, a connecting plate 8 in which the substrate 7 is bent at a right angle, and side plates provided at both ends of the substrate 7 and the connecting plate 8. 9 and 9 are integrated. Lower steel pipe column 1a
The brackets 6 ... Fixed to the upper steel pipe columns 1b are fixed to the upper steel pipe columns 1b.
When joined, the connection plates 8, 8 ...
The space between the upper and lower connecting plates 8 facing each other is determined by the I-shaped steel beam 2
The flanges 13 and 13 are arranged so as to be separated from each other by an amount corresponding to the length dimension A. Insertion holes 10 and 1 through which the bolt 4 is inserted in the respective bonding plates 6 and 6 ...
0 ... is formed.

Reinforcing plates 3a are attached inside the steel pipe columns 1a and 1b at positions adjacent to the upper and lower ends of the metal joint 3. These reinforcing plates 3a are for improving the buckling strength near the joints between the steel pipe columns 1a and 1b.

At the end of the I-shaped steel beam 2, a rectangular plate-shaped mounting plate 11 mounted on the outer surface of the steel pipe columns 1a and 1b is fixed.
The mounting plate 11 is formed with insertion holes 12, 12, ... For the bolts 4, 4, ... At positions corresponding to the screw holes 5, 5, ... Formed in the steel pipe columns 1a, 1b. . Further, the flanges 13 and 13 of the I-shaped steel beam 2 are for screwing the bolts 4 to the positions corresponding to the insertion holes 10 and 10 formed in the connection plates 8 and 8 of the bracket 6. Screw holes 14, 1
4 ... is formed.

Next, an operation of joining the steel pipe columns 1a and 1b and the I-shaped steel beam 2 will be described.

First, the lower steel pipe column 1a is erected, and then the upper steel pipe column 1b is connected to the upper end thereof. A part of the joint metal 3 protruding from the upper end of the lower steel pipe column 1a is fitted into the lower end of the upper steel pipe column 1b, and these steel pipe columns 1a and 1b are temporarily joined to form one column 1.
It becomes 5.

Next, the I-shaped steel beam 2 is brought close to the outer surface of the column 15, and its end is inserted between the connecting plates 8 of the pair of upper and lower brackets 6, 6. As a result, the mounting plate 11 of the I-shaped steel beam 2 becomes the pillar 15
Abutting the outer surface of the upper and lower flanges 13, 13
Contacts the connecting plates 8, 8 of the brackets 6, 6.

Next, the insertion holes 12, 12 ... of the mounting plate 11 and the screw holes 5, 5 ...
The position of the I-shaped steel beam 2 is adjusted so that the insertion holes 10 and 10 of 6 and the screw holes 5 and 5 of the flanges 13 and 13 are aligned with each other. In this position adjustment, since the flanges 13, 13 of the I-shaped steel beam 2 are sandwiched between the brackets 6, 6, the mounting plate 11 is not displaced in the vertical direction, and thus the position can be easily adjusted.

Next, the insertion holes 12, 12 ... of the mounting plate 11 and the insertion holes 10, 10 of the brackets 6, 6 are bolts 4, 4 ,.
・ ・ Screw in and tighten with a constant torque. Since these bolts can be shared, it is preferable in that the work can be simplified. By this bolting, the I-shaped steel beam 2 is joined to the outer surface of the column 15 with the flanges 13, 13 of the I-shaped steel beam 2 held between the brackets 6, 6. Further, the upper steel pipe column 1b, which is connected to the lower steel pipe column 1a in a state where a part of the joint metal 3 is fitted to the lower end, is joined to the lower steel pipe column 1a.

The above work is performed according to the number of attached I-shaped steel beams 2.

In such a joint structure of a pillar and a beam, a pair of upper and lower brackets 6, 6 are provided on the outer surface of the pillar 15 at intervals corresponding to the length between the flanges 13, 13 of the I-shaped steel beam 2. Therefore, by inserting the ends of the I-shaped steel beam 2 between the brackets 6, 6, the mounting plate is brought into contact with the outer surface of the column 15, and the screw holes 5, 5, ... And the insertion holes 12, 12 are inserted. ... can be easily matched with each other, and the construction efficiency can be significantly improved. Further, with the end portion of the I-shaped steel beam 2 being supported on the lower bracket 6, the screw holes 5, 5, ... And the insertion holes 12, 12 ,. Therefore, the safety of the joining work can be improved. Further, since the screw holes 5, 5, ... And the insertion holes 12, 12 ,. ... can be screwed in, and a sufficient joint strength as designed can be obtained, so that high construction quality at the work site can be obtained. Also, the flange 1 of the I-shaped steel beam 2
Since the columns 3 and 13 are joined to the brackets 6 and 6, the column 15
It is possible to improve the rigidity and proof stress of the joint between the and I-shaped steel beam 2.

In this embodiment, the bolts 4, 4, ... For joining the beam and the pillar are used as the insertion holes 12, 12 ,.
······································································································································. Using a through bolt having a length such that the tip portion projects from the insertion hole 12 of the other mounting plate 11, the other mounting plate is inserted through the insertion hole 12 of the one mounting plate 11 and the pillar 15. Both the one mounting plate 11 and the other mounting plate 11 may be bolted by projecting the threaded portion of the through bolt tip from the insertion hole 12 of 11 and screwing and tightening a nut on the threaded portion. . By using such through bolts, the number of bolts used for joining the column 15 and the I-shaped steel beam 2 can be reduced.

[Advantage of Invention] In the joint structure of a pillar and a beam of the present invention, a pair of upper and lower brackets are provided on the outer surface of the pillar with an interval corresponding to the length between the flanges of the I-shaped steel beam. By inserting the end of the I-shaped steel beam between them, the mounting plate can be brought into contact with the outer surface of the column so that the screw hole and the insertion hole can be easily aligned with each other, and the construction efficiency can be significantly improved. it can.

Further, since the screw hole and the insertion hole can be aligned and bolted with the end portion of the I-shaped steel beam supported on the lower bracket, the safety of the joining work can be improved. .

Also, since the screw hole and the insertion hole can be accurately aligned, the bolt can be screwed in without destroying the screw thread of the screw hole, and sufficient joint strength as designed can be obtained at the work site. High construction quality can be obtained.

Moreover, since the lower steel pipe column and the upper steel pipe column that have been temporarily joined can be firmly joined at the same time when the I-shaped steel beam is joined, the construction efficiency can be further improved.

[Brief description of drawings]

1 and 2 are views showing an embodiment of the present invention, in which FIG. 1 is an assembled perspective view showing a connection structure of columns and beams, and FIG. 2 is a connection of columns shown in FIG. It is an assembly perspective view which shows a structure. 1a, 1b …… Steel tube column, 2 …… I-shaped steel beam, 5 …… Screw hole, 6
…… Bracket, 11 …… Mounting plate, 12 …… Insertion hole, 1
3 ... Flange.

Claims (1)

[Scope of utility model registration request] 1. A joint structure of a column and a beam, which is a prismatic steel pipe column formed by joining an upper steel pipe column and a lower steel pipe column, and an I-shaped steel beam connected to the upper steel pipe column and the lower steel pipe column. A mounting plate to be joined to the side surface of the rectangular steel pipe column is fixed to the end of the I-shaped steel beam, and the rectangular steel pipe column is formed by joining the lower end of the upper steel pipe column to the upper end of the lower steel pipe column. In addition, a pair of upper and lower brackets are fixed to the side faces near the upper ends of the lower steel pipe columns and near the lower ends of the upper steel pipe columns with an interval corresponding to the length between the flanges of the I-shaped steel beam, and these brackets are In the mounting plate, through holes for inserting bolts are formed at positions corresponding to the side surfaces of the rectangular steel tube column and the screw holes formed in the flange of the I-shaped steel beam. While holding each flange of the I-shaped steel beam in the bracket, from the insertion hole A joint structure of a column and a beam, characterized in that the upper steel pipe column and the lower steel pipe column are joined together by connecting a bolt into the hole and the upper steel pipe column and the lower steel pipe column are joined together, and the steel pipe column and the I-shaped steel beam are joined together. .