JP2003321874A - Coupling structure of steel-pipe column - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enhance working efficiency by coupling steel-pipe columns together without the use of welding and a bolt in the construction of a building whose column is designed by using a steel pipe. <P>SOLUTION: A coupling material 3, which is made long enough to almost straddle both the mutually coupled steel pipe columns 1 and 2 with the same cross section and inscribed in the columns 1 and 2, is prefixed to either of the inner peripheries of the columns 1 and 2 in a state of being protruded from an end surface of one column 1 to the side of the other column 2; the column 2 is dropped into the side of the column 1; the coupling material 3 is inserted into the column 2; and an end surface of the column 2 is coupled to the column 1 in a state of butting against the end surface of the column 1. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steel pipe column connecting structure for connecting steel pipe columns to be connected without welding or the like.

[0002]

2. Description of the Related Art When constructing a building in which columns are designed with steel pipes, when the total length of the columns is too long to be transported from a steel frame processing factory, for example, 4
In the case of a story or more, the entire length of the pillar is cut into a length that can be transported, and after being brought to the site, the steel pipes are welded together and connected.

Since the mechanization of welding work has not progressed in the field, welding is often performed manually by the welder. Therefore, the quality of the weld depends on the technique of the welder.
The amount of inspections for quality control is enormous, which is a factor that slows down the work. Welding in the field is also affected by the weather, which affects the progress of work.

To avoid welding in the field, Japanese Patent Publication No. 7-813
No. 14, Patent No. 3057216 etc. can only be done by bolt connection, but when using a bolt, the head and tip of the bolt project to the outer periphery of the steel pipe column, so it may affect the finish . Further, since a plurality of bolts are used to connect one steel pipe column, it is not possible to expect a significant improvement in the connection work efficiency on site.

From the above background, the present invention proposes a structure for connecting steel pipe columns without using welding and bolts.

[0006]

According to the present invention, a connection is provided on one inner circumference of steel pipe columns having the same cross-section that are connected to each other, having a length that extends over both steel pipe columns to be connected, and inscribed in the steel pipe columns. The material is fixed in a state of protruding from the end face of the one steel pipe column to the other steel pipe column side, the other steel pipe column is dropped into the one steel pipe column side, and the connecting member is inserted into the inside thereof, and the end face is By connecting to one of the steel pipe columns while abutting against the end surface of the one steel pipe column, the steel pipe columns are connected without using welding and bolts, and work efficiency is improved.

When the end faces of the two steel pipe columns abut, the axial compressive force from the upper steel pipe column is transmitted to the lower steel pipe column at the end faces of the steel pipe columns. The shearing force is transmitted through the connecting member by straddling both the steel pipe columns in a state of being inscribed in the steel pipe columns.

The bending moment is also transmitted through the connecting members by the connecting members being inscribed in both steel pipe columns. However, as shown in FIG. 2, the connecting point of the steel pipe columns causes an earthquake in the frame composed of columns A and beams B. If the bending moment to be set is set near the inflection point where the bending moment is small, the bending moment to be transmitted in the connecting material is small, so the connecting material performs a sufficient stress transmitting function, and depending on the part, the size and shape of the connecting material. Can be simplified.

When it is considered that the connecting material alone is insufficient in terms of transmission of the bending moment in the connecting portion, the reinforcing material is arranged and adhered over the outer circumferences of both steel pipe columns as described in claim 2. The reinforcing material works to transmit a bending moment between the steel tube columns together with the connecting material by being circumscribed over both steel tube columns.

Since the connection of the steel pipe columns and the transmission of stress in the connection portion are performed by the connecting material which inscribes and extends over both of them, or by the connecting material and the reinforcing material, no welding at the site is necessary. In this case, the problem of quality control and the problem of work stagnation in the connected part are solved, and the work progress is achieved.

Further, since no bolt joining is required, there is no problem of finishing when using bolts, and the work efficiency on site can be greatly improved.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION According to the present invention, as shown in FIGS. 1 and 5 (a), steel pipe columns 1 and 2 having the same cross-section are connected to each other by using a connecting member 3 which is inscribed in both sides. It is a connected structure. The steel pipe columns 1 and 2 may be square steel pipes or circular steel pipes.

As shown in FIG. 1- (a), the connecting member 3 extends over both steel pipe columns 1 and 2 to the same extent and overlaps and inscribes for a sufficient length to transmit the bending moment and the shearing force. As long as it is inscribed in both steel pipe columns 1 and 2, at least bending moment and shearing force in one horizontal direction can be transmitted, the connecting member 3
The material and shape of the do not matter.

FIG. 1 shows a case in which a connecting member 3 is formed in a cross-shaped cross section by combining H-shaped steel and T-shaped steel in correspondence with the cross-sectional shape of the steel pipe columns 1 and 2 of a square steel pipe. In this case, the connecting member 3 is inscribed in all the flanges of the steel pipe columns 1 and 2, and transmits bending moments and shearing forces in two horizontal directions.

FIG. 3- (a) shows the case where H-section steel is used for the connecting member 3, (b) shows the case where a circular steel pipe is used, (c) shows the plate alone, and each plate is used for the steel pipe column 1. This is the case where they are joined to the inner peripheral surface of each flange. (d) shows a case where the steel pipe columns 1 and 2 are circular steel pipes and a circular steel pipe inscribed therein is used as the connecting member 3. In the case of (a), the bending moment and the shear force in the horizontal 1 direction are transmitted, and in the cases of (b) to (d), the bending moment and the shear force in the horizontal 2 directions are transmitted as in the case of FIG.

Since the connecting member 3 does not bear the compressive force from the upper steel pipe column 2 but only the shearing force and the bending moment, the connecting member 3 itself is shown in FIGS. 1, 3 (a) and 3 (b). , (D) Independently inscribed, the installed state can be maintained only by the frictional force between the inner peripheral surfaces of the steel pipe columns 1 and 2, but if necessary, the lower steel pipe column The stopper of the connecting member 3 is provided by welding a stopper to the inner peripheral surface of the connecting member 1, or by welding or adhering the connecting member 3 directly to the steel pipe column 1.

FIG. 4- (a) shows a case where a rectangular concrete inscribed in the steel pipe columns 1 and 2 of a square steel pipe is used as the connecting member 3, and (b) shows a circular concrete inscribed in the steel pipe columns 1 and 2 of a square steel pipe. When concrete is used as the connecting material 3, (c) is a case where circular concrete inscribed in the steel pipe columns 1 and 2 of the circular steel pipe is used as the connecting material 3. In either case, bending moments and shear forces in two horizontal directions are transmitted.

5 (b) and 5 (c), the reinforcing member 4 is arranged over the outer circumferences of the two steel pipe columns 1 and 2, and the connecting member 3 is formed by bonding them.
The case where the transmission of the bending moment between the steel pipe columns 1 and 2 by the above is compensated by the reinforcing member 4 is shown.

The reinforcing material 4 is a steel plate, a carbon fiber sheet,
A thin sheet using a fiber reinforced material such as a glass fiber sheet is used, and is integrated with the steel pipe columns 1 and 2 by a filler 5 such as an adhesive or mortar filled between the surfaces of the steel pipe columns 1 and 2. , The bending moment is transmitted together with the connecting member 3 by bearing the tensile force with respect to the bending moment in the connecting portion.

[0020]

The steel pipe columns having the same cross-section that are connected to each other are provided with a connecting member which has a length that extends over both steel pipe columns to the same extent and which is inscribed in the steel pipe columns from the end surface of one steel pipe column to the other. Fixed in a state of protruding to the steel pipe column side, the other steel pipe column is dropped into one steel pipe column side, the connecting material is inserted into the inside, and the end face is abutted against the end face of the one steel pipe column Since it is connected to one of the steel pipe columns, no welding at the site is needed, and the problem of quality of the connected part and the problem of work stagnation in the case of welding are solved, and the work progress is achieved.

The axial compressive force from the upper steel pipe column is transmitted to the lower steel pipe column at the end faces of the steel pipe columns by abutting the end faces of both steel pipe columns, and the shearing force and the bending moment are connected by the connecting materials of both steel pipe columns. Since it is transmitted via a connecting material by straddling both of them in the state of inscribed in, it does not require bolting to connect the steel pipe columns, so there is no finishing problem when using bolts, The work efficiency can be greatly improved.

According to the second aspect of the present invention, since the reinforcing material is arranged and adhered over the outer peripheries of both steel pipe columns, it is possible to reliably transmit the stress even when it is considered that the connecting material alone is insufficient in terms of stress transmission.

[Brief description of drawings]

FIG. 1 (a) is an elevation view showing a state where steel pipe columns are connected,
(b) is a view on arrow xx of (a).

FIG. 2 is a conceptual diagram showing a connection portion of steel pipe columns in a column / beam frame.

3 (a) to 3 (d) are plan views showing an arrangement example of a connecting member using a steel material.

4 (a) to (c) are plan views showing an arrangement example of a connecting member using concrete.

FIG. 5 (a) is an elevation view showing a connected state of steel pipe columns by a connecting material, (b) is an elevation view showing a reinforcing material arranged around the connecting portion, and (c) is ( It is the yy line sectional view of b).

[Explanation of symbols]

1, 2 ... Steel pipe columns, 3 ... Connecting materials, 4 ... Reinforcing materials, 5 ...
… Filler, A… Pillar, B… Beam.

Claims (2)

[Claims] 1. A steel pipe column having the same cross-section to be connected to each other, wherein one steel pipe column has an inner circumference having a length that extends over both steel pipe columns to the same extent, and a connecting member inscribed in the steel pipe column is one of the ones. It is fixed in a state of protruding from the end surface of the steel pipe column to the other steel pipe column side,
The other steel pipe column is dropped to the side of the one steel pipe column and the connecting material is inserted therein, and is connected to the one steel pipe column with the end face abutting the end face of the one steel pipe column. Connection structure of steel pipe columns. 2. The connecting structure for steel pipe columns according to claim 1, wherein reinforcing materials are arranged and adhered over the outer peripheries of both steel pipe columns.