CN102587577A - Steel tube-I beam combination steel tube concrete special-shaped columns and manufacture method thereof - Google Patents

Abstract

The invention relates to a steel pipe-I-steel combined steel pipe concrete special-shaped column, which comprises a steel pipe, an I-steel and concrete poured therein. The steel pipe and the I-steel are welded together to form special-shaped columns with different sections. The whole section is separated by steel pipe and I-beam, and concrete is filled into the separated space between steel pipe and I-beam. The steel pipe can be welded or rolled, and the I-beam can be welded or rolled. The beneficial effect of the present invention is that the steel pipe wall at the inner corner and the I-steel flange steel plate interpenetrate to overcome the unclear force transmission at the inner corner of other concrete-filled steel pipe special-shaped columns, and enhance the overall working capacity of the special-shaped steel pipe concrete-filled columns; The edges and corners of the special-shaped column strengthen the restraint ability of the special-shaped column; the steel pipe and the I-beam separate the concrete of the special-shaped column, reduce the width-thickness ratio of the steel plate, and improve the bearing capacity and earthquake resistance; make the special-shaped column production and assembly modular , while the construction speed is faster.

Description

Steel pipe-I-steel combined steel pipe concrete special-shaped column and manufacturing method thereof

technical field

The invention specifically relates to a steel pipe-I-steel combined steel pipe concrete special-shaped column and a manufacturing method thereof.

Background technique

Concrete filled steel pipe is a structural member formed by filling concrete in steel pipes, and the steel pipes and their core concrete can jointly bear external loads. The supporting function of the filled concrete can prevent premature buckling of the steel tube wall, and at the same time, the steel tube can restrain the core concrete, so that the steel tube concrete has a high bearing capacity; at the same time, the steel tube concrete has good plasticity and toughness, and has good earthquake resistance. Strong and other advantages. Therefore, CFST has broad application prospects.

In the architectural design, in order to meet the architectural requirements and avoid the impact of the protruding edges and corners of the corner columns on the view and occupied space of the house, and to improve the flexibility of the furniture arrangement in the house, the reinforced concrete special-shaped column structure with the same thickness as the column wall and the filling wall has been widely used, but the concrete It is easy to crack, so the shear and torsional bearing capacity of the column is poor, so the seismic capacity is insufficient. At present, some scholars have proposed a variety of cross-sectional forms of CFST special-shaped columns, but when the width-thickness ratio is large, the steel tubes have a weak constraint on the concrete, which is prone to premature buckling and reduces the bearing capacity of the components.

In order to solve the poor seismic capacity of reinforced concrete special-shaped columns and the shortcomings of steel tube concrete columns, it is necessary to find a special-shaped column with good ductility and high bearing capacity.

Contents of the invention

The invention overcomes the deficiency of existing special-shaped columns of concrete-filled steel tubes, especially overcomes the deficiency of steel tubes in confining the core concrete in concrete-filled steel tubes with relatively large width and thickness, thereby improving the bearing capacity and ductility of components, and realizing concrete-filled steel tubes at the same time Modularization of the production and assembly of special-shaped columns. Construction production, design is relatively simple.

The invention is a steel pipe-I-steel combined steel pipe concrete special-shaped column, which consists of steel pipes, I-steel and concrete poured therein; the steel pipes and the I-steel are welded together to form special-shaped columns with different sections. The entire section is separated by the steel pipe and the I-beam, and concrete is filled into the space separated by the steel pipe and the I-beam.

The steel pipe can be welded or rolled, and the I-beam can be welded or rolled.

The manufacturing method of the steel pipe-I-steel combined steel pipe concrete special-shaped column is characterized in that:

(1), factory prefabricated steel pipe and I-beam:

Production of steel pipes: steel pipes are welded or rolled; I-beams are welded or rolled;

(2) On-site welded steel pipe-I-steel combined steel pipe concrete special-shaped column:

After the components are transported to the site, I-beams are welded on the adjacent two sides of the steel pipes, and then two steel pipes are welded to the other end of the two I-beams, and the three steel pipes and the two I-beams are connected to form an L-shaped steel pipe. - I-shaped steel composite steel pipe concrete special-shaped column;

After being fixed on site, concrete is poured into the space separated by the steel pipe and the I-beam for curing to form an L-shaped steel pipe-I-beam composite steel pipe concrete special-shaped column;

(3) Using the same connection method, four steel pipes and three I-beams are welded, concrete is poured for curing, and a T-shaped steel pipe-I-beam composite steel pipe concrete special-shaped column is formed;

(4) Using the same connection method, five steel pipes and four I-beams are welded, and concrete is poured for curing to form a ten-shaped steel pipe-I-beam composite steel pipe concrete special-shaped column;

The advantages of the present invention are:

(1) The steel pipe wall at the inner corner and the I-steel flange steel plate interpenetrate to overcome the unclear force transmission at the inner corner of other concrete-filled steel pipe special-shaped columns, and enhance the overall working capacity of the special-shaped steel pipe concrete columns;

(2) The steel pipe is placed on the edge and corner of the section, which produces a strong restraint effect and improves the bearing capacity and earthquake resistance of the special-shaped column;

(3) The steel pipe and I-beam separate the section of the special-shaped column to prevent the transmission of local concrete cracks to the adjacent parts, and can effectively increase the restraint ability of the steel pipe to the concrete, thereby giving full play to the respective advantages of steel and concrete and improving Bearing capacity and ductility of special-shaped columns;

(4) The space separated by the steel pipe and the I-beam bears independent and direct force, which reduces the width-to-thickness ratio of the special-shaped column section steel plate and prevents premature buckling of the steel pipe.

Description of drawings

Fig. 1 is that the present invention is made up of three steel pipes and two I-beams and is the special-shaped column schematic diagram of " L " shaped steel pipe concrete in section;

Fig. 2 is the schematic diagram of the concrete-filled steel tube special-shaped column which is composed of four steel pipes and three I-beams with a section of "T" shape according to the present invention;

Fig. 3 is the schematic diagram of the concrete-filled steel tube special-shaped column which is composed of five steel pipes and four I-beams with a cross-section of "ten" in the present invention;

Fig. 4 is a schematic diagram of a steel pipe of the present invention;

Fig. 5 is the I-beam schematic diagram of the present invention;

Fig. 6 is a schematic diagram of the connection structure of the steel pipe and the I-beam of the present invention;

Fig. 7 is a schematic diagram of the special-shaped column of L-shaped steel pipe-I-steel combined steel pipe of the present invention;

Fig. 8 is a schematic diagram of L-shaped steel pipe-I-steel combined steel pipe concrete special-shaped column of the present invention;

Fig. 9 is a schematic diagram of a "T" shaped concrete filled steel pipe special-shaped column of the present invention;

Fig. 10 is a schematic diagram of a "ten" shaped concrete filled steel pipe special-shaped column of the present invention;

In the picture: 1-steel pipe 2-I-beam 3-concrete

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings.

As shown in Figures 1-10, the present invention provides a steel pipe-I-steel combined steel pipe concrete special-shaped column, which consists of a steel pipe 1, an I-steel 2, and concrete 3 poured therein. The column is to weld the I-beam on the adjacent side of the steel pipe, and then weld the steel pipe 1 to the other end of the I-beam 2, and connect multiple steel pipes 1 and I-beam 2 to form a cross-sectional shape of L-shape, T-shape or ten. Shaped steel pipe-I-steel composite steel pipe concrete special-shaped column, and then fill the space separated by steel pipe and I-steel with concrete. The steel pipe 1 is welded or rolled; the working steel 2 is welded or rolled, as shown in Fig. 1 and Fig. 2 .

The steel pipe-I-steel composite steel pipe concrete special-shaped column refers to that the components are transported to the site and welded, and the I-beam 2 is welded on the adjacent side of the steel pipe 1, as shown in Figure 6, and then two steel pipes 1 are welded on the At the other end of the two I-beams 1, three steel pipes 1 and two I-beams 2 are connected to form an L-shaped steel pipe-I-beam combined steel pipe concrete special-shaped column, as shown in Figure 7. Concrete is poured in the space separated by the steel pipe 1 and the I-beam 2 for curing to form an L-shaped steel pipe-I-steel combined steel pipe concrete special-shaped column, as shown in Figure 8.

Using the same connection method, four steel pipes 1 and three I-beams 2 are welded, concrete is poured for curing, and a T-shaped steel pipe-I-steel combined steel pipe concrete special-shaped column is formed, as shown in Figure 9, and the same connection method is adopted. Five steel pipes 1 and four I-beams 2 are welded, concrete is poured for curing, and a ten-shaped steel pipe-I-steel composite steel pipe concrete special-shaped column is formed, as shown in Figure 10.

Claims (4)

1. steel pipe-i iron combined steel pipe concrete profiled pile, this post comprise steel pipe, i iron and are cast in the steel pipe and the concrete in the steel pipe and the i iron compartment, it is characterized in that:

It is L shaped that three steel pipes and two i iron connect into cross sectional shape; One side of steel pipe is through the butt weld welding H-bar at the center; And with the two frange plates surface of i iron and the surperficial flush of steel pipe, at the other end welded steel pipe of i iron, the while is also with the two frange plates surface of i iron and the surperficial flush of steel pipe again; The adjacent edge of steel pipe welding H-bar welds another i iron through butt weld at the center again; Simultaneously with the surperficial flush of two frange plates of i iron surface, again with the other end welded steel pipe of i iron, with the two frange plates surface of i iron and the surperficial flush of steel pipe with steel pipe; Through two i iron three steel pipes being connected into cross sectional shape is L shaped steel pipe-i iron combined steel pipe hetermorphiscal column, concreting in steel pipe and in the steel pipe and the i iron compartment;

Perhaps; It is T shape that four steel pipes and three i iron connect into cross sectional shape, and one side of steel pipe is through the butt weld welding H-bar at the center, and with the two frange plates surface of i iron and the surperficial flush of steel pipe; Again at the other end welded steel pipe of i iron; Also with the two frange plates surface of i iron and the surperficial flush of steel pipe, the adjacent edge of steel pipe welding H-bar welds another i iron through butt weld at the center more simultaneously, with the two frange plates surface of i iron and the surperficial flush of steel pipe; Again with the other end welded steel pipe of i iron; With the two frange plates surface of i iron and the surperficial flush of steel pipe, the adjacent edge of steel pipe welding H-bar welds another i iron through butt weld at the center again, with the two frange plates surface of i iron and the surperficial flush of steel pipe; Again with the other end welded steel pipe of i iron; With the two frange plates surface of i iron and the surperficial flush of steel pipe, through three i iron four steel pipes are connected into the steel pipe that cross sectional shape is a T shape-i iron combined steel pipe hetermorphiscal column, concreting in steel pipe and in the steel pipe and the i iron compartment;

Perhaps; It is cross that five steel pipes and four i iron connect into cross sectional shape, and one side of steel pipe is through the butt weld welding H-bar at the center, and with the two frange plates surface of i iron and the surperficial flush of steel pipe; Again at the other end welded steel pipe of i iron; Also with the two frange plates surface of i iron and the surperficial flush of steel pipe, the adjacent edge of steel pipe welding H-bar welds another i iron through butt weld at the center more simultaneously, with the two frange plates surface of i iron and the surperficial flush of steel pipe; Again with the other end welded steel pipe of i iron; With the two frange plates surface of i iron and the surperficial flush of steel pipe, the adjacent edge of steel pipe welding H-bar welds another i iron through butt weld at the center again, with the two frange plates surface of i iron and the surperficial flush of steel pipe; Again with the other end welded steel pipe of i iron; With the two frange plates surface of i iron and the surperficial flush of steel pipe, the adjacent edge of steel pipe welding H-bar welds another i iron through butt weld at the center again, with the two frange plates surface of i iron and the surperficial flush of steel pipe; Again with the other end welded steel pipe of i iron; With the two frange plates surface of i iron and the surperficial flush of steel pipe, through four i iron five steel pipes being connected into cross sectional shape is criss-cross steel pipe-i iron combined steel pipe hetermorphiscal column, concreting in steel pipe and in the steel pipe and the i iron compartment.

2. according to the said steel pipe of claim 1-i iron combined steel pipe concrete profiled pile, it is characterized in that: described steel pipe is by being welded or rolling forming.

3. according to the said steel pipe of claim 1-i iron combined steel pipe concrete profiled pile, it is characterized in that: described i iron is welding or rolling forming.

4. according to the preparation method of the said steel pipe of claim 1-i iron combined steel pipe concrete profiled pile, it is characterized in that:

(1), prefabrication steel pipe, i iron:

Make steel pipe: steel pipe adopts by being welded or rolling forming; I iron adopts by being welded or rolling forming;

(2), field Welding steel pipe-i iron combined steel pipe concrete profiled pile:

After member was transported to the scene, the welding H-bar respectively on the adjacent both sides of steel pipe was welded in two steel pipes the other end of two i iron again, and it is L shaped steel pipe-i iron combined steel pipe concrete profiled pile that three steel pipes and two i iron are connected into cross sectional shape;

After the fixed in place,, form L shaped steel pipe-i iron combined steel pipe concrete profiled pile in concreting maintenance in the steel pipe and the i iron compartment;

(3), adopt identical method of attachment, four steel pipes and three i iron are welded, the concreting maintenance forms teeprofile-i iron combined steel pipe concrete profiled pile;

(4), adopt identical method of attachment, five steel pipes and four i iron are welded, the concreting maintenance forms ten shapes steel pipe-i iron combined steel pipe concrete profiled pile.

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