JPH0615044Y2 - Steel pipe column connection structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a connection structure of steel pipe columns used to connect prismatic steel pipe columns used in columns of steel-framed constructions.

[Prior Art] In steel-framed buildings, square steel tube columns are often used as columns, but during construction, connecting the square steel tube columns sequentially using bolts is a difficult task. is there. Further, if shear stress is applied to the connecting portion in the lateral direction even after the connection, the upper and lower steel pipe columns may be displaced from each other.

[Object of the Invention] The object of the present invention is to solve the above-mentioned problems, and to connect square steel pipe columns to each other temporarily by a simple means, and to provide a connection structure of steel pipe columns having a resistance against shear stress. To provide.

[Summary of the Invention] The gist of the present invention for achieving the above-mentioned object is to fix an insertion member inside each of the connection portions of the two steel pipe columns in a connection structure in which upper and lower rectangular steel pipe columns are butted. However, the cross-shaped connecting metal fittings having plate pieces respectively extending toward the opposite corners of the steel pipe columns are interposed between the steel pipe columns by being locked between the insertion members. It is a connection structure of steel pipe columns.

[Embodiment of the Invention] The present invention will be described in detail based on the illustrated embodiment.

FIG. 1 shows a cross section of the connecting portion, in which the rectangular steel pipe columns 1 and 2 to be connected are butted up and down. Insertion members 3 and 4 are respectively fixed to the lower side of the upper end of the lower steel pipe column 1 and to the upper side of the lower end of the upper steel pipe column 2, respectively. A connection fitting 5 is internally provided at the connection portion between the steel pipe columns 1 and 2. To fix the steel pipe columns 1 and 2 together, a steel plate or the like (not shown) is brought into contact with the steel pipe columns from the outside and bolted.

FIG. 2 shows the relationship between the connection fitting 5 and the lower rectangular steel pipe pillar 1, and the connection fitting 5 fitted into the connection end portion of the rectangular steel pipe pillar 1 about half is a cross-shaped member made of a steel plate or the like. And the four edges 5a to 5d thereof are fitted into the four corner portions 1a to 1d of the rectangular steel tube column 1, respectively. That is, the cross-shaped connecting fitting 5 is fitted so as to be located on two line segments connecting the diagonal lines of the corner portions 1a to 1d of the rectangular steel pipe column 1, and the end edge of the connecting fitting 5 is fitted. Distance between 5a and 5c and edge 5
The distance between b and 5d is substantially equal to the distance between the corner portions 1a and 1c of the square steel tube column 1 and the distance between the corner portions 1b and 1d, respectively.

By fitting the upper steel pipe pillar 2 from above the lower steel pipe pillar 1 into which the connection fitting 5 is fitted, the upper and lower steel pipe pillars 1 and 2 can be temporarily connected, and then the bolt is attached to the steel pipe pillar 2. The connection can be completed by attaching to 1, 2 and the insertion members 3, 4. In this case, even if a stress in the shearing direction is applied to the connection portion, the presence of the connection fitting 5 provides a resistance force. Further, since the connection fitting 5 has a cross shape in the diagonal direction of the steel pipe pillars 1 and 2, positioning is easy when the connection fitting 5 and the steel pipe pillars 1 and 2 are fitted together.

Further, the height of the connecting fitting 5 needs to be suitable for fitting over both of the two upper and lower rectangular steel pipe columns 1 and 2 to be connected, but as shown in FIG. By providing the step 6 in the middle of 5a to 5d, it is possible to connect the square steel pipe columns 1 and 7 having different inner diameters as shown in FIG. For example, as shown in FIG. 4, when connecting the upper rectangular steel pipe column 7 having a thin plate thickness even if the outer diameter is the same, a step 6 having a length corresponding to the difference in plate thickness is formed. If provided, the end edge of the step portion 6 can be fitted to the square steel pipe column 1, and the upper edge of the step portion 6 can be fitted to the square steel pipe column 7, and thus the plate thickness or It is possible to connect the square steel pipe columns 1 and the square steel pipe columns 7 having different inner diameters in a state where the outer diameters are the same.

The connection fitting 5 can be positioned with respect to the rectangular steel pipe column 1 by contacting the lower side thereof with the upper side of the insertion member 3, and if the connecting metal plate 5 has a stepped portion 6, the stepped portion 6 is placed above the rectangular steel tubular pillar 1. It can also be hooked on and positioned. Alternatively, the connection fitting 5 may be press-fitted into the rectangular steel tube column 1 without using the insertion member 3 or the like.

[Effects of the Invention] As described above, the connection structure for steel pipe columns according to the present invention is
By using a cross-shaped connecting metal fitting and fitting the end edges into the corners of the square steel pipe pillar, it is possible to easily connect the square steel pipe pillars with each other easily and easily. Efficiency and strength against shear stress can be increased.

[Brief description of drawings]

Drawing shows an embodiment of the connection structure of the steel pipe column according to the present invention,
FIG. 1 is a cross-sectional view of a connected state, FIG. 2 is a perspective view of a connecting metal fitting fitted to a square steel pipe column, FIG. 3 is a perspective view of the connecting metal fitting, and FIG. 4 is a rectangular shape with different plate thickness. It is sectional drawing of the connection state of steel pipe columns. Reference numerals 1, 2 and 7 are square steel pipe columns, 1a to 1d are corner portions,
3, 4 are insertion members, 5 are connection fittings, 5a to 5d are end edges,
6 is a step.

Claims (2)

[Scope of utility model registration request] 1. In a connection structure in which upper and lower rectangular steel tube columns are butted against each other, an insertion member is fixed to each inner side of the connecting portions of the two steel tube columns so as to face opposite corner portions of the steel tube columns. A connecting structure for steel pipe columns, characterized in that cross-shaped connecting metal fittings each having a plate piece extending therein are interposed between the steel pipe columns by locking between the insertion members. 2. The connection of steel pipe columns according to claim 1, wherein a step portion is provided on the plate piece of the connection fitting when connecting the rectangular steel pipe columns having different inner diameters. Construction.