CN209163043U - A kind of side's Concrete-filled Double Skin Steel Tube Columns and steel beam connecting joint - Google Patents

Abstract

The utility model belongs to the technical field of civil structure nodes, in particular to a connection node between a square hollow sandwich steel tube concrete column and a steel beam. The technical scheme of the utility model is as follows: it includes an end plate, an angle steel and a high-strength bolt connection pair, the square hollow sandwich steel pipe concrete column includes an outer steel pipe, an inner steel pipe and concrete, and concrete is poured between the outer steel pipe and the inner steel pipe, and the steel beam The end of the steel beam is vertically fixed on the end plate, and the connection between the steel beam and the end plate is welded with an angle steel up and down along the web direction of the steel beam, and the corresponding positions of the angle steel, the end plate, the outer steel pipe and the inner steel pipe are all There is a through hole, the end plate is closely attached to the outer steel pipe, the high-strength bolt connection pair connects the angle steel, the end plate, the outer steel pipe and the inner steel pipe, and the steel beam is vertically installed on the outer steel pipe. The utility model can effectively transmit the bending moment, and achieve the purpose of strengthening the joint and weakening the steel beam, so that the plastic hinge is kept away from the steel beam joint during the earthquake, which is convenient for later repair.

Description

A connection node between a square hollow sandwich steel tube concrete column and a steel beam

technical field

The utility model belongs to the technical field of civil structure nodes, in particular to a connection node between a square hollow sandwich steel tube concrete column and a steel beam.

Background technique

CFST columns utilize the synergistic effect of steel tubes and concrete in the stressing process to improve the bearing capacity of the structure. In recent years, with the development of high-rise and super high-rise structures in cities, CFST columns are gradually being applied to practical applications. In engineering, the hollow sandwich CFST column has also been widely used in some projects in recent years. Compared with the solid CFST column, it has the advantages of light weight, high flexural rigidity and good seismic performance. However, the design of the beam-column joint of the hollow sandwich CFST column has not been strictly guaranteed at the current stage.

Utility model content

The utility model provides a connection node between a square hollow sandwich steel tube concrete column and a steel beam, the force transmission path is clear, the bending moment can be effectively transmitted, and the purpose of strengthening the node and weakening the steel beam is achieved, so that it can be plastically hinged in the earthquake process. Keep away from steel beam joints for later repair.

The technical scheme of the present utility model is as follows:

A connection node between a square hollow sandwich steel tube concrete column and a steel beam, including an end plate, an angle steel and a high-strength bolt connection pair, the square hollow sandwich steel tube concrete column includes an outer steel tube, an inner steel tube and concrete, and the outer steel tube and the inner steel tube. The end of the steel beam is vertically fixed on the end plate, and the connection between the steel beam and the end plate is welded with one piece of the angle steel up and down along the web direction of the steel beam. , The corresponding positions of the outer steel pipe and the inner steel pipe are provided with through holes, and the end plate is tightly attached to the outer steel pipe, and the high-strength bolt connection pair connects the angle steel, the end plate, the outer steel pipe and the inner steel pipe. Together, the steel beams are mounted vertically on the outer steel pipes.

The preferred solution of the connection node between the square hollow interlayer CFST column and the steel beam is that the steel beam is an I-shaped steel beam or a box-shaped steel beam.

The preferred solution of the connection node between the square hollow sandwich-layer CFST column and the steel beam is that the steel beam and the end plate are welded together.

The preferred solution of the connection node between the square hollow sandwich-layer CFST column and the steel beam is that stiffeners are provided on the web of the steel beam.

The construction method of the connection node between the square hollow interlayer concrete-filled steel tube column and the steel beam includes the following steps:

1) Reserve through holes on the outer and inner steel pipes, position and center the outer and inner steel pipes, and pour concrete between the outer and inner steel pipes;

2) Weld the end plate vertically on the end of the steel beam, and weld one piece of the angle steel up and down along the web direction of the steel beam at the connection between the steel beam and the end plate, and the angle steel and the end plate are provided with There are through holes, and the through holes on the angle steel and the end plate correspond to the positions of the through holes on the outer steel pipe and the inner steel pipe;

3) After the concrete reaches 80% of the required strength of the design, hoist the steel beam in place to ensure that the through holes are aligned, and use the high-strength bolt connection pair to pass through the angle steel, end plate, outer steel pipe, concrete and The inner square steel pipe is tightened with the high-strength bolt connection pair, so that the square hollow sandwich steel pipe concrete column and the steel beam are tightly connected together.

The beneficial effects of the utility model are as follows: the utility model reserves through holes on the square hollow interlayer concrete-filled steel tubular column and the steel beam, which are connected by high-strength bolt connection pairs, thereby reducing the amount of welding works and saving the engineering cost; The force transmission path of the node is clear, which can effectively transmit the bending moment, which can strengthen the node and weaken the steel beam, so that the plastic hinge is far away from the steel beam node during the earthquake, which is convenient for later repair.

Description of drawings

Figure 1 is the front view of the connection node structure between the square hollow sandwich concrete-filled steel tubular column and the steel beam;

Figure 2 is a top view of the connection node structure between the square hollow sandwich concrete-filled steel tubular column and the steel beam;

Figure 3 is a structural diagram of the end plate.

In the picture: 1 is the outer steel pipe, 2 is the inner steel pipe, 3 is the end plate, 4 is the angle steel, 5 is the steel beam, 6 is the high-strength bolt connection pair, 7 is the concrete, and 8 is the stiffener.

Detailed ways

As shown in Figure 1-3, a connection node between a square hollow interlayer CFST column and a steel beam includes an end plate 3, an angle steel 4 and a high-strength bolt connection pair 6, and the square hollow interlayer CFST column includes an outer steel pipe 1, an inner side Steel pipe 2 and concrete 7, concrete 7 is poured between the outer steel pipe 1 and the inner steel pipe 2, the end of the steel beam 5 is vertically welded on the end plate 3, and the connection between the steel beam 5 and the end plate 3 is along the One piece of the angle steel 4 is welded up and down the web direction of the steel beam 5, and the corresponding positions of the angle steel 4, the end plate 3, the outer steel pipe 1 and the inner steel pipe 2 are all provided with through holes, and the end plate 3 is tightened. Attached to the outer steel pipe 1, the high-strength bolt connection pair 6 connects the angle steel 4, the end plate 3, the outer steel pipe 1 and the inner steel pipe 2 together, and the steel beam 5 is vertically installed on the outer steel pipe 1; The steel beam 5 is an I-shaped steel beam, and a stiffening rib 8 is provided on the web of the steel beam 5 .

The construction method of the connection node between the square hollow interlayer concrete-filled steel tube column and the steel beam includes the following steps:

1) Reserve through holes on the outer steel pipe 1 and the inner steel pipe 2, position and center the outer steel pipe 1 and the inner steel pipe 2, and pour concrete 7 between the outer steel pipe 1 and the inner steel pipe 2;

2) Weld the end plate 3 on the end of the steel beam 5 vertically, and weld a piece of the angle steel 4 up and down along the web direction of the steel beam 5 at the connection between the steel beam 5 and the end plate 3. The angle steel 4 and the end plate 3 are provided with through holes, and the through holes on the angle steel 4 and the end plate 3 correspond to the positions of the through holes on the outer steel pipe 1 and the inner steel pipe 2;

3) After the concrete 7 reaches 80% of the required strength of the design, the steel beam 5 is hoisted in place to ensure that the through holes are aligned, and the high-strength bolt connection pair 6 is used to pass through the angle steel 4, the end plate 3, the outer For the square steel pipe 1 , the concrete 7 and the inner square steel pipe 2 , the high-strength bolt connection pair 6 is tightened, so that the square hollow sandwich steel pipe concrete column and the steel beam 5 are tightly connected together.

Claims (4)

1. a kind of side's Concrete-filled Double Skin Steel Tube Columns and steel beam connecting joint, which is characterized in that including end plate, angle steel and high-strength Bolt connection pair, square Concrete-filled Double Skin Steel Tube Columns include outer square steel tube, interior square steel tube and concrete, outer square steel tube and Nei Fang Casting concrete between steel pipe, the end vertical of girder steel are fixed on the end plate, and the junction of girder steel and the end plate is along steel One block of angle steel, the corresponding position of the angle steel, end plate, outer square steel tube and interior square steel tube are respectively welded up and down in the web direction of beam It is all equipped with through-hole, the end plate is tightly attached on outer square steel tube, the high-strength bolt auxiliary connection is by the angle steel, end plate, foreign side Steel pipe and interior square steel tube link together, and girder steel is vertically mounted on outer square steel tube.

2. side's Concrete-filled Double Skin Steel Tube Columns according to claim 1 and steel beam connecting joint, which is characterized in that described Girder steel is i section steel beam or steel beam with box shape.

3. side's Concrete-filled Double Skin Steel Tube Columns according to claim 1 and steel beam connecting joint, which is characterized in that described Girder steel welds together with the end plate.

4. side's Concrete-filled Double Skin Steel Tube Columns according to claim 1 and steel beam connecting joint, which is characterized in that described The web of girder steel is equipped with ribbed stiffener.