JPH11264186A - Column-column joining structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate a protrusion for columns sideward by joining an end plate and a top plate by bolts, and joining an upper column and a lower column. SOLUTION: A top plate 21 in which an upper bolt hole 11a is opened is fixed to the upper end of a lower column 20. The top plate 21 is a planar rectangle, fitted to the upper face of the lower column 20, and fixed by welding. An end plate 11 in which the upper bolt hole 11a is opened is fixed at a position communicating with a lower bolt hole 21a. The end plate 11 is fixed on a flange and a web on both the sides of the web by walding. The end plate 11 and the top plate 21 are manufactured in a factory or the like, the upper and lower bolt holes are matched at a josite, and tightened by one side bolts. An upper column 10 and the lower column are joined by joining the end plate 10 and the top plate 21 by bolts. Thus, the protrusion of the columns can be eliminated sideward.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention particularly relates to a preferable column-column joint structure in which a closed column as a lower column and an open column as an upper column are connected.

[0002]

2. Description of the Related Art Conventionally, as a frame structure of a low-rise building of a steel structure type, a frame wall construction method called a steel house has recently been provided for a ramen structure, a brace structure, and a house.

[0003] In general, on the lowest floor (first floor), it is desirable to have a large opening on the south side of a house, and a space with few pillars is desired even in a store or the like. It is desirable to have a ramen structure consisting of only columns and beams that do not require a structure.
In such a case, the structure of the ramen structure is not limited to the first floor, and the structure of all floors is usually a ramen structure. A closed section such as a square steel pipe is used for the column having the ramen structure. As a method for joining such closed-section columns, the invention described in JP-A-6-265405 and the invention described in JP-A-8-3028158 are provided.

The invention described in Japanese Patent Application Laid-Open No. 6-265405 is a method for simplifying the joining by joining via an end plate 1 as shown in FIG.

The invention described in Japanese Patent Application Laid-Open No. H8-3028158 discloses a method in which an upper column is fitted to a lower column, as shown in FIG. It is. The one-side bolt 2 is already sold and can be fastened only by tightening from one side.

[0006]

However, the prior art has the following problems. Due to the difficulty of joining in the column with the closed cross section, the mixing of the ramen structure and other structures has not been performed.

In the invention described in Japanese Patent Application Laid-Open No. 6-265405, although it is a simple method to join via an end plate, a bolt is joined at the outer peripheral portion of the end plate larger than the outer shape of the column. Therefore, a thick and large end plate 1 is required, and there is a problem that it cannot be used for parts (side pillars, corner pillars) where the protrusion to the side of the pillar hinders.

The invention described in Japanese Patent Application Laid-Open No. H8-3028158 discloses that a large number of expensive one-side bolts 2 are used, that a bolt head comes out, and that an upper pillar is fitted to a lower pillar. Because the bolt holes must match
There were problems such as strict production accuracy.

The present invention has been made in view of such a problem, and an object thereof is to provide a joint structure to a lower-layer closed-section column without a large protrusion to the side of the column. Cost is low, production accuracy is not strict,
Another object of the present invention is to provide a pillar-column joint structure.

[0010]

SUMMARY OF THE INVENTION The present invention has the following arrangement to solve the above-mentioned problems. The gist of the invention described in claim 1 resides in. ← Description after Claim Determination The gist of the invention described in the claim resides in.

In other words, the above-mentioned prior art basically aims at a rigid frame structure by rigid coupling on both the upper and lower floors, and the present inventor considered that this is the reason why the above problem occurs. Therefore, the lower floor has a rigid frame structure that allows the use of a box-shaped column because of the necessity for the application, but the upper floor, which requires less structural strength, has a brace structure with open-section columns and a frame material with open sections. It is possible to use a quasi-ramen structure (not a pure ramen structure) with a semi-rigid connection using open-section columns, or a combination of these framing wall construction methods and a quasi-ramen structure It is.

The "bolt" in the present invention includes a bolt suitable for carrying out the present invention, such as a normal bolt, a high tension bolt, a one-side bolt, and the like.

[0013]

Embodiments of the present invention will be described below in detail with reference to the drawings.

(First Embodiment) As shown in FIG.
The column-column joint structure according to the first embodiment forms a quasi-ramen structure in which the upper end of the lower column 20 and the lower end of the upper column 10 are connected by a semi-rigid connection described later. Lower pillar 20
Is a steel closed-section column shaped into a long box, and the beam 4
0 is rigidly connected. The upper pillar 10 is an H-shaped pillar having an open section.
Shaped steel. In FIG. 1, only the lower pillar 20 is shown in a vertical section.

As shown in FIG. 2, a top plate 21 having an upper bolt hole 11a is fixed to the upper end of the lower pillar 20. The top plate 21 has a rectangular shape in a plan view, is fitted to the upper end of the lower pillar 20, and is fixed by welding. FIG. 2 shows the lower pillar 2 in a state where the upper pillar 10 is not connected.
0 is a plan view.

As shown in FIGS. 3 and 4, the lower end of the upper post 10 has an upper bolt hole 1 at a position communicating with the lower bolt hole 21a.
An end plate 11 having an opening 1a is fixed by welding. The end plate 11 is fixed to the flange and the web on both sides of the web by welding.

The upper pillar 10 and the lower pillar 20 are connected to a lower bolt hole 21a of a top plate 21 and an end plate 11
The one-side bolt 30 is inserted and fastened to the upper bolt hole 11a. However, the upper column 10 and the lower column 20 are joints of only four bolts, and have a connection structure that is not a perfect rigid connection but a semi-rigid connection. Therefore,
The present inventor calls it a quasi-ramen structure. Therefore, a brace is provided on the upper floor, a bearing wall or the like is provided, and a brace structure and a frame wall construction method are applied. On the other hand, a beam 40 is steel-bonded to the upper end of the lower column 20, and the lower layer has a ramen structure. With such a structure, the power of the upper floor can be effectively transmitted to the lower floor through the pillar.

In order to construct such a quasi-ramen structure, the upper pillar 10 and the lower pillar 20 are manufactured in a factory or the like, and as shown in FIG. Can be performed simply by tightening.

Since the column-column joint structure according to the embodiment is configured as described above, the following effects can be obtained.

Since the upper column 10 and the lower column 20 are joined by bolt connection between the end plate 11 and the top plate 21 because of forming a quasi-ramen structure by semi-rigid connection, the side plates according to the prior art are stretched laterally. This eliminates the need for the protruding end plate 11 and eliminates a large protrusion on the side of the pillar.

Since the number of expensive one-side bolts 30 is four, the cost of the bolts can be reduced, and the construction cost can be reduced.

Further, since the column-column joint structure according to the present embodiment is a quasi-ramen structure, the upper column 10 is also required to be rigidly connected to the lower column 20 by using a column having a closed cross section. The construction cost can be reduced.

Further, since only the upper pillar 10 and the lower pillar 20 are joined by bolts, the construction can be facilitated, the construction time can be shortened, and the construction cost can be reduced.

Further, since the end plate 11 and the top plate 21 are simply fixed to the upper column 10 and the lower column 20, the manufacturing accuracy is not strict.

Further, since the end plates 11 are fixed to both sides of the web as shown in FIGS. 3 and 4, the tightening force acts intensively on both sides to provide an effective structure against bending. Can be.

The structure of the upper floor has a brace structure, a frame wall structure or a semi-rigid structure, depending on the number of the one-side bolts 30 and the selection of the joint details (selection of the plate attached to the upper floor column and selection of the tightening force, etc.). Both can be supported.

Also, since the one-side bolt is used to join the column having a closed cross section, simple and reliable construction can be performed.

Although the present embodiment has been applied to the quasi-ramen structure, the present invention is not limited to this, and can be applied to a structure suitable for applying the present invention.

Further, as the upper column, a steel material suitable for carrying out the present invention, such as a channel steel or a C-shaped steel, can be used.
When a channel steel is used, the upper column 1 shown in FIGS.
0 ', only one side of the web, upper bolt hole 11a'
Fixes the perforated end plate 11 '. In such a case, the upper pillar 10 'and the lower pillar can be joined with only two bolts.

Further, as shown in FIG. 9, a hole-down metal member 50 can be fixed to the web of the upper column 10 and can be semi-rigidly connected to the lower column 20. The hole-down hardware 50 is used in a steel house or a wooden two-by-four. One upper bolt hole 51a 'is opened in the web, and is fixed to one side (inside) of the web with a bolt or a screw as shown in FIGS.

Further, in the above embodiment, the end plate 11 is fixed between the flanges of the upper column 10, but may be fixed to the lower end surface of the upper column 10.

Further, the number, position, shape, etc. of the above-mentioned constituent members are not limited to the above-described embodiment, but can be set to suitable numbers, positions, shapes, etc., for implementing the present invention. In the drawings, the same components are denoted by the same reference numerals.

[0033]

Since the present invention is configured as described above, the following effects can be obtained.

Since the upper column and the lower column are joined by bolting the end plate and the top plate, it is possible to eliminate a large protrusion to the side of the column.

Further, since the upper column and the lower column have a quasi-ramen structure that does not form a completely rigid connection, the number of bolts can be reduced, and the cost can be reduced.

Further, since only the upper pillar and the lower pillar are joined by bolts, the construction can be facilitated, the construction time can be shortened, and the construction cost can be reduced.

Further, the end plate and the top plate are simply fixed to the upper and lower columns, and the number of bolts is small, so that the manufacturing accuracy is not strict.

Further, as shown in FIG.
The hole-down hardware 50 can also be used. Also,
Hole down hardware 50 'as shown in FIG. 13 can also be used.

As shown in FIG. 14, if a circular top plate 21 'is used, it can be used for a circular column 20'.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional side view showing a column-column joint structure according to an embodiment of the present invention.

FIG. 2 is a plan view of a lower pillar to which a beam is connected, shown in FIG.

FIG. 3 is a side view showing a lower end portion of the upper pillar shown in FIG.

FIG. 4 is a plan view of an upper pillar shown in FIG.

FIG. 5 is an exploded perspective view of the column-column connection structure shown in FIG. 1;

FIG. 6 is a side view showing a lower end of a side surface of an upper pillar according to another embodiment.

FIG. 7 is a plan view of the upper pillar shown in FIG. 6;

8 is a perspective view of the upper pillar shown in FIG.

FIG. 9 is a partial cross-sectional side view showing a column-column joint structure according to another embodiment.

FIG. 10 is a side view showing a lower end portion of the upper pillar shown in FIG. 9;

11 is a plan view of the upper pillar shown in FIG.

FIG. 12 is a perspective view showing a lower end portion of an upper pillar provided with a hole-down hardware according to another embodiment of the present invention.

FIG. 13 is a perspective view of a hole-down hardware according to another embodiment of the present invention.

FIG. 14 is a perspective view showing a column-column connection structure according to another embodiment of the present invention.

FIG. 15 is a side view of a column-column joint structure according to the related art.

FIG. 16 is a side view of a column-column joint structure according to another related art.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 End plate 2 One-side bolt 10, 10 'Upper pillar 11, 11' End plate 11a, 11a 'Upper bolt hole 20, 20' Lower pillar 21, 21 'Top plate 21a Lower bolt hole 30 One-side bolt 40 Beam 50, 50 'Hole down hardware 51a' Upper bolt hole

Claims (5)

[Claims] 1. A pillar-column joint structure for connecting an upper end of a lower pillar and a lower end of an upper pillar, wherein a top plate having a lower bolt hole is provided at an upper end of the lower pillar, At the lower end of the upper pillar, an end plate having an upper bolt hole is provided at a position communicating with the lower bolt hole. Bolts are inserted and fastened into the upper bolt hole and the lower bolt hole, and the lower plate is fastened. A column-column joint structure, wherein the column and the upper column are connected. 2. A hole-down metal member having an upper bolt hole through which the bolt can be inserted is provided at a lower end portion of the upper pillar in place of an end plate.
The pillar-column joint structure according to claim 1, wherein a bolt is inserted into and fastened to the lower bolt hole of the lower column, and the lower column and the upper column are connected. 3. The column-column joint structure according to claim 1, wherein the lower column is a closed column having a box shape. 4. The column-column joint structure according to claim 1, wherein the upper column is an open-column column. 5. The pillar according to claim 1, wherein:
Steel house with column joint structure.