CN101565969A - Indirect assembly concrete-filled steel tube combined special-shaped column and production method thereof - Google Patents

Abstract

The invention relates to an indirect assembled steel pipe concrete combined special-shaped column and a manufacturing method thereof. The structural column includes steel pipes, accessories, connecting plates, bolts and concrete. The special-shaped column is to weld the connecting plate on the steel pipe first, connect the accessories and the connecting plate of the steel pipe with bolts, connect multiple steel pipes into a steel pipe composite special-shaped column with a cross-sectional shape of L-shaped, T-shaped or cross-shaped, and then install the special-shaped column in the steel pipe. Pouring concrete composition. The beneficial effects of the invention are: the columns are wrapped in the wall, avoiding the bulge at the corner of the room; the distance between the single steel pipes can be adjusted, and the steel pipes with small cross-sections can be used to obtain greater bending rigidity; the factory prefabricated components are connected by bolts on site , Fast construction speed and high precision. The invention is suitable for steel structure residential or office buildings.

Description

Indirect assembled steel pipe concrete composite special-shaped column and its manufacturing method

technical field

The invention relates to a special-shaped steel pipe concrete composite column, more specifically, to an indirect assembled steel pipe concrete composite special-shaped column structure and a manufacturing method thereof.

Background technique

The concrete filled steel pipe structure is composed of concrete filled steel pipes. Due to the restraint of the steel pipes, the core concrete is in a three-way compression state when under pressure, which improves the bearing capacity of the concrete, and due to the filling of the concrete, prevents premature collapse of the steel pipe walls. Buckling, and then reached the effect of 1+1>2, so that it has the characteristics of high strength and good seismic performance. In addition, CFST also has the advantages of good fire resistance, convenient construction, and good economic performance. Therefore, CFST is used for Structural columns offer great advantages.

However, in residential and office buildings, the corners of the building often have convex corners due to the excessive cross-section of the columns, which affects the usable area of the house and the arrangement of furniture. Modern people have higher and higher requirements for interior decoration and environment, and pay more and more attention to the usable area of houses. If the problem of corner lobes caused by columns can be avoided, it will be a great progress for residential and office buildings.

Using a special-shaped column structure can avoid the phenomenon of indoor convex corners, and can obtain a large bending rigidity with a small cross-section. It is a column form suitable for residential and office buildings. At present, the most widely used special-shaped columns are reinforced concrete special-shaped column structures, but the concrete is easy to crack, so the shear and torsional performance of the column is not good, so the seismic performance is insufficient, and the construction is complicated, requiring a lot of steel bar binding and formwork support. Work.

In order to solve the problem of indoor column convex angle and insufficient seismic performance of reinforced concrete columns, it is necessary to find a column form that can not only ensure ductility, but also take advantage of special-shaped columns.

Contents of the invention

The invention provides an indirect assembled steel pipe concrete combined special-shaped column. The column is made by connecting single steel pipes with accessories to form an L-shaped, T-shaped or cross-shaped special-shaped column, and then pouring concrete into the steel pipes.

Technical scheme of the present invention is as follows:

An indirect fabricated steel pipe concrete combined special-shaped column, the column includes steel pipes, accessories, connecting plates, bolts, and concrete, the connecting plates are welded on the steel pipes, the accessories are connected to the connecting plates with bolts, and the three steel pipes are connected into a cross-sectional shape of L-shaped, or connect four steel pipes into a T-shaped cross-sectional shape or connect five steel pipes into a cross-shaped indirect assembled steel pipe combined special-shaped column, and pour concrete into the steel pipe;

The said accessories are angle steel accessories or steel plate accessories;

The connecting plate is a steel plate connecting plate or a T-shaped steel connecting plate;

The steel plate connecting plate has bolt holes, stands upright on the side wall of the steel pipe, and is welded to the steel pipe. The angle steel accessories or steel plate accessories leave bolt holes corresponding to the bolt holes on the steel plate connecting plate. Bolted;

The T-shaped steel connecting plate is welded on the side wall of the steel pipe, and has bolt holes on one side, and the angle steel accessories or steel plate accessories have bolt holes corresponding to the bolt holes on the T-shaped steel connecting plate. The T-shaped steel connecting plate and the accessories Bolted;

A method for manufacturing an indirect fabricated steel pipe concrete composite special-shaped column structure, comprising the following steps:

(1), prefabricated components in the factory:

Making accessories: The accessories are made of angle steel accessories or steel plate accessories, and bolt holes are made at both ends of the angle steel or steel plates, and can be connected with the connecting plate by bolts;

Making connecting plates: using steel plate connecting plates, welding the steel plate connecting plates with bolt holes to the steel pipe wall at intervals;

(2) On-site assembly of steel pipe composite special-shaped columns:

After the components are transported to the site, the steel plate attachments are bolted to the steel plate connection plate, and then connected to the connection plate of another steel pipe. The steel plate attachments are arranged at intervals horizontally and obliquely to form a single composite column, which is used as the first L-shaped column. On one side, use the above connection method to connect three steel pipes to form an indirectly connected L-shaped steel pipe combined special-shaped column;

After the on-site positioning is fixed, concrete is poured into the steel pipe and cured to form an indirect connected L-shaped steel pipe concrete composite special-shaped column;

(3) Using the same connection method, four steel pipes are connected, concrete is poured and cured to form a T-shaped steel pipe concrete composite special-shaped column indirectly connected;

(4) Using the same connection method, connect five steel pipes, pour concrete for curing, and form a cross-shaped steel pipe concrete composite special-shaped column indirectly connected.

Another method for manufacturing an indirect fabricated steel pipe concrete composite special-shaped column structure includes the following steps:

(1), prefabricated components in the factory:

Making accessories: The accessories are made of angle steel accessories or steel plate accessories, and bolt holes are made at both ends of the angle steel or steel plates, and can be connected with the connecting plate by bolts;

Make connecting plate: T-shaped steel connecting plate is used. Firstly, bolt holes are made on one side of T-shaped steel, and the other side is welded on the steel pipe wall, which is also arranged at a certain distance in the vertical direction;

(2) On-site assembly of steel pipe composite special-shaped columns:

After the components are transported to the site, the steel plate attachments are bolted to the steel plate connection plate, and then connected to the connection plate of another steel pipe. The steel plate attachments are arranged at intervals horizontally and obliquely to form a single composite column, which is used as the first L-shaped column. On one side, use the above connection method to connect three steel pipes to form an indirectly connected L-shaped steel pipe combined special-shaped column;

After the on-site positioning is fixed, concrete is poured into the steel pipe and cured to form an indirect connected L-shaped steel pipe concrete composite special-shaped column;

(3) Using the same connection method, four steel pipes are connected, concrete is poured and cured to form a T-shaped steel pipe concrete composite special-shaped column indirectly connected;

(4) Using the same connection method, connect five steel pipes, pour concrete for curing, and form a cross-shaped steel pipe concrete composite special-shaped column indirectly connected.

The beneficial effects of the present invention are: (1) the columns are wrapped in the wall, which avoids the appearance of convex corners in the indoor corners, and overcomes the disadvantages of large cross-sectional dimensions of ordinary rectangular columns or circular columns; It improves ductility and overcomes the shortcomings of reinforced concrete special-shaped columns that are easy to crack and poor seismic resistance; (3) the distance between single steel pipes can be adjusted, which can easily achieve greater bending stiffness and equal stability of the two main axes, saving Materials; (4) Factory prefabricated components, on-site bolt connection, fast construction speed and high precision. Suitable for steel structure residential or office buildings.

Description of drawings

Fig. 1a, 1b, 1c are L-shaped, T-shaped, cross-shaped indirect fabricated steel pipe concrete combined special-shaped column schematic diagrams of the three-dimensional structural system of the present invention;

Figure 2a is a structural schematic diagram of the connection between the steel plate connecting plate and the steel pipe;

Figure 2b is a structural schematic diagram of the connection between the T-shaped steel connecting plate and the steel pipe;

Figure 3a is a schematic diagram of the structure of the angle steel attachment;

Figure 3b is a schematic diagram of the structure of the steel plate decoration;

Figure 4 is a structural schematic diagram of the connection between the steel plate attachment and the steel plate connecting plate;

Fig. 5 is the structural schematic diagram of single truss combination special-shaped column;

Fig. 6 is a schematic diagram of the structure of an L-shaped indirect assembled assembled steel pipe combined special-shaped column;

Fig. 7 is a schematic diagram of the construction of an L-shaped indirect fabricated steel pipe concrete composite special-shaped column;

Fig. 8 is a schematic diagram of the structure of a T-shaped indirect fabricated steel pipe concrete composite special-shaped column;

Fig. 9 is a schematic diagram of the structure of a cross-shaped indirect fabricated steel pipe concrete composite special-shaped column.

In the figure, 1: steel pipe, 2: steel plate connection plate, 3: steel plate attachment, 4: bolt, 5: concrete, 6: T-shaped steel connection plate, 7: angle steel attachment.

Detailed ways

As shown in Figures 1-9, the present invention provides an indirect fabricated steel pipe concrete composite special-shaped column, which includes a steel pipe 1, accessories (angle steel accessories 7 or steel plate accessories 3), connecting plates (steel connecting plates 2 or Angle steel connection plate 6), bolt 4, concrete 5 etc. are formed. The column is to weld the connecting plate on the steel pipe, connect the accessories and the connecting plate of the steel pipe with bolts, connect multiple steel pipes into an indirect assembled special-shaped steel pipe composite column with a cross-sectional shape of L-shaped, T-shaped or cross-shaped, and then install it on the steel pipe. Made of poured concrete. The connecting plate can adopt steel plate connecting plate 2 and T-shaped steel connecting plate 6. The steel plate connecting plate 2 has bolt holes, stands upright on the side wall of the steel pipe, and is welded to the steel pipe 1, and the bolt holes are used for bolt connection with accessories, as shown in Figure 2a. The T-shaped steel connecting plate 6 is welded on the side wall of the steel pipe 1 on one side, and has bolt holes on the other side for connecting with bolts of accessories, as shown in Fig. 2b. The attachment is to turn the bolt holes at both ends of the angle steel or the steel plate, which can be bolted to the connecting plate to form the angle steel attachment 7 or the steel plate attachment 3, as shown in Figures 3a and 3b.

The indirect assembly type refers to that after the components are transported to the site, one end of the steel plate decoration 3 is bolted to the steel plate connecting plate 2, and indirectly connected to the steel pipe, as shown in Figure 4, and then the other end of the steel plate decoration 3 is connected to the other The steel plate connection plate 2 of the steel pipe is connected, and the steel plate accessories 3 are arranged horizontally and at intervals of 45° to form a single composite column as the first side of the L-shaped column, as shown in Figure 5. Using the above connection method, three steel pipes are connected to form an L-shaped indirect assembled steel pipe combined special-shaped column, as shown in Figure 6. After the on-site positioning is fixed, concrete is poured into the steel pipe and cured to form an L-shaped indirect fabricated steel pipe concrete composite special-shaped column, as shown in Figure 7.

Using the same connection method, 4 steel pipes were connected, concrete was poured and cured to form a T-shaped indirect assembled steel pipe concrete composite special-shaped column, as shown in Figure 8. Connect 5 steel pipes, pour concrete for curing, and form a cross-shaped indirect assembled steel pipe concrete composite special-shaped column, as shown in Figure 9.

When factory prefabricated special-shaped columns are used, all the bolted connections in this patent can be changed to corresponding welded connections, that is, the strips are directly welded on the steel pipe wall, and the steel pipes are connected into L-shaped, T-shaped, and cross-shaped steel pipe-concrete combinations Shaped column.

Claims (7)

1, a kind of indirect assembly concrete-filled steel tube combined special-shaped column, this post comprises steel pipe (1), sews part, junction plate, bolt (4), concrete (5), it is characterized in that: on steel pipe, be welded to connect plate, to sew part is connected with the junction plate bolt, to connect into cross sectional shape be L shaped or four steel pipes are connected into cross sectional shape with three steel pipes is T shape or five steel pipes are connected into cross sectional shape is criss-cross indirect assembled steel tube combined special-shaped column, is cast with concrete in steel pipe.

2, indirect assembly concrete-filled steel tube combined special-shaped column according to claim 1 is characterized in that: sewing part is that angle steel is sewed part (7) or steel plate is sewed part (3).

3, indirect assembly concrete-filled steel tube combined special-shaped column according to claim 2 is characterized in that: junction plate is steel plate junction plate (2) or T-steel junction plate (6).

4, indirect assembly concrete-filled steel tube combined special-shaped column according to claim 3, it is characterized in that: steel plate junction plate (2) leaves bolt hole, be erected in the steel pipe sidewall, be welded to connect with steel pipe (1), angle steel sew part (7) or steel plate sew part (3) leave with the steel plate junction plate on the corresponding bolt hole of bolt hole, the steel plate junction plate with sew the part bolt and be connected.

5, indirect assembly concrete-filled steel tube combined special-shaped column according to claim 3, it is characterized in that: on one side the T-steel junction plate is welded on steel pipe (1) sidewall, have bolt hole on one side, angle steel sew part (7) or steel plate sew part (3) leave with the T-steel junction plate on the corresponding bolt hole of bolt hole, the T-steel junction plate with sew the part bolt and be connected.

6, a kind of indirect assembly concrete-filled steel tube combined special-shaped column preparation method is characterized in that:

(1), prefabricated units in factory:

Part is sewed in making: sew part and adopt angle steel to sew part (10) or steel plate is sewed part (3), at the two ends of angle steel or steel plate car bolt hole, can carry out bolt with junction plate and be connected;

Make junction plate: adopt steel plate junction plate (2), the steel plate junction plate (2) that will have bolt hole is welded on the steel pipe tube wall with being spaced a distance;

(2), on-site consolidation steel pipe combined special-shaped column:

After member is transported to the scene, steel plate is sewed part (3) to be connected with steel plate junction plate (2) bolt, be connected with the junction plate of another steel pipe again, steel plate is sewed part (3) level to arranging with oblique interval, form single Pin coupled column,, adopt above-mentioned connected mode as article one limit of L shaped post, three steel pipes are connected, form the L shaped steel pipe combined special-shaped column that connects indirectly;

After the on-the-spot positioning and fixing, fluid concrete and maintenance in steel pipe form the L shaped concrete filled steel tube combined special-shaped column that connects indirectly;

(3), adopt identical method of attachment, four steel pipes are connected, fluid concrete and maintenance form the concrete combined special-shaped post of teeprofile that connects indirectly;

(4), adopt identical method of attachment, with five steel pipes connections, fluid concrete maintenance, the cross concrete filled steel tube combined special-shaped column that formation connects indirectly.

7, a kind of indirect assembly concrete-filled steel tube combined special-shaped column construction manufacturing method is characterized in that:

(1), prefabricated units in factory:

Part is sewed in making: sew part and adopt angle steel to sew part (10) or steel plate is sewed part (3), at the two ends of angle steel or steel plate car bolt hole, can carry out bolt with junction plate and be connected;

Make junction plate: adopt T-steel junction plate (6), at first at a sidecar bolt hole of T-steel, another side is welded on the steel pipe tube wall, also is along the layout that vertically is spaced a distance;

(2), on-site consolidation steel pipe combined special-shaped column:

After member is transported to the scene, steel plate is sewed part (3) to be connected with steel plate junction plate (2) bolt, be connected with the junction plate of another steel pipe again, steel plate is sewed part (3) level to arranging with oblique interval, form single Pin coupled column,, adopt above-mentioned connected mode as article one limit of L shaped post, three steel pipes are connected, form the L shaped steel pipe combined special-shaped column that connects indirectly;

After the on-the-spot positioning and fixing, fluid concrete and maintenance in steel pipe form the L shaped concrete filled steel tube combined special-shaped column that connects indirectly;

(3), adopt identical method of attachment, four steel pipes are connected, fluid concrete and maintenance form the concrete combined special-shaped post of teeprofile that connects indirectly;

(4), adopt identical method of attachment, with five steel pipes connections, fluid concrete maintenance, the cross concrete filled steel tube combined special-shaped column that formation connects indirectly.

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