CN206800791U - A kind of multi-cavity steel tube concrete post with tie hoop and pull bar - Google Patents

Abstract

The utility model discloses a multi-cavity steel pipe concrete column with spiral stirrups and tie rods, which comprises a multi-cavity steel pipe composed of side plates connected by rectangular steel pipes between the side plates, and is characterized in that: There are spiral stirrups running through the center, and several tie rods are horizontally penetrated on a side plate of the multi-cavity steel pipe. The multi-cavity steel pipe with spiral stirrups and several tie rods is filled with concrete to form a spiral stirrup and tie rod. multi-cavity concrete-filled steel tube columns. The multi-cavity concrete-filled steel pipe column with spiral stirrups and tie rods has a high degree of assembly, strong energy dissipation capacity, and good ductility, which solves the problems of low bearing capacity and energy dissipation capacity of traditional rectangular steel pipe concrete composite columns, and improves the performance of steel plate shear walls. Excellent bearing capacity and ductility, with seismic performance and necessary strength, good deformation capacity and energy dissipation capacity.

Description

A multi-cavity steel pipe concrete column with spiral stirrups and tie rods

technical field

The utility model relates to a multi-cavity steel pipe concrete column with spiral stirrups and tie rods, which is mainly used in steel plate shear walls of multi-storey and high-rise buildings in building structures.

Background technique

With the large population of modern cities and the rapid development of the economy, the steel structure has many advantages such as light weight, high strength, good seismic performance, large building space, convenient construction, environmental protection and good comprehensive economic indicators. It has been widely used in steel structure engineering and has become one of the commonly used structural forms of building structures (especially multi-high-rise building structures). The traditional form of rectangular concrete-filled steel tube composite column, concrete-filled steel tube utilizes the interaction between steel tube and concrete in the stress process, that is, the confinement effect of the steel tube on the concrete makes the concrete in a complex stress state, thereby improving the strength of the concrete and improving its plasticity. and toughness are greatly improved. At the same time, after the steel pipe is filled with concrete, the buckling of the steel pipe wall can be avoided or delayed due to the supporting effect of the concrete. The combination of the two materials makes up for their respective shortcomings, making the material performance fully exerted. However, the restraint bearing capacity of the above-mentioned steel pipes to the core concrete is relatively low.

In order to improve its bearing capacity and energy dissipation capacity, it is set as a multi-cavity concrete-filled steel tube column with a combination of rectangular steel pipes and spiral stirrups and tie rods, so that the restraint of the steel plate on the concrete can be strengthened, and local buckling of the steel plate can be prevented or delayed.

Utility model content

The purpose of this utility model is to provide a multi-cavity concrete-filled steel pipe column with a high degree of assembly, strong energy dissipation capacity and good ductility, with spiral stirrups and tie rods, so as to solve the problem of the bearing capacity and energy dissipation capacity of the traditional rectangular concrete-filled steel pipe composite column To improve the bearing capacity and ductility of the steel plate shear wall, the multi-cavity concrete-filled steel tube column with spiral stirrups and tie rods has seismic performance, necessary strength, good deformation capacity and energy dissipation capacity.

In order to achieve the above object, the utility model adopts the following technical solutions:

A multi-cavity steel pipe concrete column with spiral stirrups and tie rods, including multi-cavity steel pipes composed of side plates and rectangular steel pipes connected between side plates, spiral stirrups run through the rectangular steel pipes of the multi-cavity steel pipes, and in the multi-cavity steel pipes A side plate of the cavity steel pipe is horizontally penetrated with several tie rods, and concrete is filled in the multi-cavity steel pipe with spiral stirrups and several tie rods running through it, forming a multi-cavity steel pipe concrete column with spiral stirrups and tie rods.

Preferably, the side plate and the rectangular steel pipe are connected by a three-sided fillet weld.

Preferably, the spiral stirrups include several longitudinal reinforcements and stirrups surrounding the longitudinal reinforcements in a spiral manner, and the longitudinal reinforcements and the surrounding longitudinal reinforcements are connected and fixed by steel wires.

Further, the diameter of the spiral stirrup is adapted to the rectangular steel pipe, and the stirrup on the spiral stirrup is welded to the rectangular steel pipe.

Further, the height of the spiral stirrup is consistent with the height of the rectangular steel pipe.

Preferably, several perforations are distributed up and down in an array along the perforated side plate, and the tie rods penetrate horizontally into the perforations and extend to the inner wall of the outer plate of the multi-cavity steel pipe.

Further, the length of the tie rod extending out of the side plate of the hole is longer than the length of the tie rod penetrating into the through hole.

Further, the multi-cavity steel pipe connection formed by the connection of rectangular steel pipes between the side plates and the side plates constitutes an L-shaped multi-cavity steel pipe. There are several pull rods running horizontally through the two inner plates of the L-shaped multi-cavity steel pipe. Spiral stirrups run through the rectangular steel pipes of the steel pipes, and concrete is filled in the multi-cavity steel pipes through which the spiral stirrups and several tie rods run through to form a multi-cavity concrete filled steel pipe column with spiral stirrups and tie rods.

The utility model can obtain following beneficial effect:

(1) The multi-cavity steel tube concrete column with spiral stirrups and tie rods is used to strengthen the bearing capacity and ductility of the cavity formed by the side plate and the hot-rolled rectangular steel tube, improve the restraint ability of the steel tube to the concrete, and at the same time delay or prevent Local buckling of steel plates.

(2) After the hot-rolled rectangular steel tube is filled with concrete, it can be used as the edge restraint member of the entire steel tube concrete column, which can improve its bearing capacity and energy dissipation capacity.

(4) Tie rods are set in the side plates between the rectangular steel tubes, which further strengthens the bearing capacity of the multi-cavity concrete-filled steel tube composite column and improves the lateral resistance performance.

(6) Some components are factory prefabricated and assembled on site, which is convenient for construction.

Description of drawings

Fig. 1 is the structure diagram before the combination of the multi-cavity concrete filled steel tube column without spiral stirrup and pull rod of the utility model;

Fig. 2 is a structural schematic diagram of the combination process of the multi-cavity steel pipe concrete column without spiral stirrups and tie rods of the present invention;

Fig. 3 is a structural schematic view before the steel is connected to the side plate;

Fig. 4 is a schematic diagram of the connection structure between the steel and the side plate;

Fig. 5 is a schematic diagram of a reinforced multi-cavity steel pipe concrete column with spiral stirrups and tie rods of the utility model.

In the figure: 1. Rectangular steel pipe; 2. Side plate; 3. Pull rod; 4. Spiral stirrup; 5. Perforation; 6. Perforated side plate.

detailed description

Below in conjunction with specific embodiment the utility model is described in further detail.

As shown in Fig. 1 in conjunction with Fig. 3, a multi-cavity steel pipe concrete column with spiral stirrups and tie rods of the utility model includes a multi-chamber steel pipe composed of side plates 2 and rectangular steel pipes 1 connected between the side plates. Spiral stirrups 4 run through the rectangular steel pipe 1 of the steel pipe, several tie rods 3 run horizontally inside the side plate of the multi-cavity steel pipe, and concrete is filled in the multi-cavity steel pipe with the spiral stirrup 4 and several tie rods 3 A multi-cavity steel pipe concrete column with spiral stirrups and tie rods is formed. Wherein, the side plate 2 and the rectangular steel pipe 1 are connected by three-sided fillet welds.

As shown in Fig. 1, the spiral stirrup 4 of the present invention includes several longitudinal steel bars and stirrups surrounding the longitudinal steel bars in a spiral manner, and the longitudinal steel bars and the surrounding longitudinal steel bars are connected and fixed by steel wires. The diameter of the spiral stirrup 4 is compatible with the rectangular steel pipe 1, and the stirrup on the spiral stirrup 4 is connected to the rectangular steel pipe 1 by welding. The height of the spiral stirrup 4 is consistent with the height of the rectangular steel pipe 1 .

There are several perforations 5 on the inner plates (perforated side plates 6) of the two side plates 2 of the L-shaped multi-cavity steel pipe. inner wall. The perforations 5 are distributed in an array up and down along the perforated side plate 6 . The length of the tie rod 3 extending out of the perforated side plate 6 is greater than the length of the tie rod 3 penetrating into the through hole 5 .

As shown in Figure 3, Figure 4 and Figure 5, in this structure, the multi-cavity steel pipe can be designed as an L-shaped multi-cavity steel pipe connected by the connection of the rectangular steel pipe 1 between the side plate 2 and the side plate 2. , the two inner plates of the L-shaped multi-cavity steel pipe are horizontally penetrated with several tie rods 3, the rectangular steel pipe of the L-shaped multi-cavity steel pipe is penetrated with spiral stirrups 4, and the multi-cavity steel bars with spiral stirrups and several pull rods are penetrated The center of the steel pipe is filled with concrete to form a multi-cavity steel pipe concrete column with spiral stirrups and tie rods.

The installation process of a multi-cavity steel pipe concrete column with spiral stirrups and tie rods of the utility model is as follows:

1) Pre-drill a piece of the side plate 2 along its upper and lower sides, then combine the rectangular steel pipe 1 and the side plate 2, and then weld the rectangular steel pipe 1 and the side plate 2 by three-sided fillet welds to form the structure shown in Figure 2 ;

2) Place the prefabricated spiral stirrup 4 in the rectangular steel pipe 1 and the side plate 2 in the rectangular steel pipe 1, and the stirrup of the spiral stirrup is welded to the steel plate; in the perforation 5;

3) Then fill the rectangular steel tube 1 with the spiral stirrup 4 and the side plate cavity through which the tie rod 3 is penetrated with concrete to form a multi-cavity steel pipe concrete column with spiral stirrup and tie rod.

Another installation process of the present utility model is as follows:

1) Pre-drill a piece of the side plate 2 along its upper and lower sides, then combine the rectangular steel pipe 1 and the side plate 2 into the structure shown in Figure 3-4, and then weld the rectangular steel pipe 1 and the side Board 2 has the structure shown in Figure 5;

2) Place the prefabricated spiral stirrup 4 in the rectangular steel pipe 1 and the side plate 2 in the rectangular steel pipe 1, and the stirrup of the spiral stirrup is welded to the steel plate; In the perforation 5; perforations are set on the two inner walls of the L-shaped multi-cavity steel pipe, and penetrate through the tie rod 3 respectively;

3) Then fill the rectangular steel tube 1 with the spiral stirrup 4 and the side plate cavity through which the tie rod 3 is penetrated with concrete to form a multi-cavity steel pipe concrete column with spiral stirrup and tie rod.

The utility model is based on the principle of seismic concept design. The structure should have multiple seismic fortification lines to avoid the damage of the whole system due to the damage of some components. At the same time, it also requires that the structure should have the necessary strength, good deformation capacity and energy dissipation capacity.

The above content is a further detailed description of the utility model in conjunction with specific preferred embodiments. It cannot be determined that the specific embodiment of the utility model is limited to this. Under the premise of the new concept, some simple inferences or replacements can also be made, which should be regarded as belonging to the utility model and the scope of patent protection determined by the submitted claims.

Claims (8)

1. A multi-cavity steel tube concrete column with spiral stirrups and tie rods, comprising a multi-cavity steel pipe connected by side plates, rectangular steel pipes between the side plates, is characterized in that: there are Spiral stirrup, a side plate of the multi-cavity steel pipe is horizontally penetrated with several tie rods, and the multi-cavity steel pipe with the spiral stirrup and several tie rods is filled with concrete to form a multi-cavity with spiral stirrup and tie rods Concrete Steel Tube Columns. 2. A multi-cavity concrete filled steel tube column with spiral stirrups and tie rods according to claim 1, characterized in that: the side plate and the rectangular steel tube are connected by three-sided fillet welds. 3. A multi-cavity concrete filled steel tube column with spiral stirrups and tie rods according to claim 1, characterized in that: said spiral stirrups comprise several longitudinal reinforcements and stirrups spirally surrounding the longitudinal reinforcements, the longitudinal The steel bars and the surrounding longitudinal steel bars are connected and fixed by steel wires. 4. A kind of multi-cavity concrete-filled steel tube column with spiral stirrups and tie rods according to claim 3, characterized in that: the diameter of the spiral stirrups is compatible with the rectangular steel pipe, and the stirrups on the spiral stirrups are compatible with the rectangular steel pipes. Steel pipe welded connection. 5. A multi-cavity concrete filled steel pipe column with spiral stirrups and tie rods according to claim 4, characterized in that: the height of the spiral stirrups is consistent with the height of the rectangular steel pipe. 6. A multi-cavity concrete-filled steel tube column with spiral stirrups and tie rods according to claim 1, characterized in that: several perforations are distributed in an array along the perforated side plate, and the tie rods penetrate horizontally into the perforations and extend To the inner wall of the outer plate of the multi-cavity steel pipe. 7. A multi-cavity concrete filled steel tube column with spiral stirrups and tie rods according to claim 6, wherein the length of the tie rods extending out of the side plate of the opening is longer than the length of the tie rods penetrating into the perforations. 8. A multi-cavity steel pipe concrete column with spiral stirrups and tie rods according to any one of claims 1-7, characterized in that: the multi-chamber steel pipes are composed of side plates and rectangular steel pipe connections between the side plates Connect to form an L-shaped multi-cavity steel pipe. There are several tie rods running horizontally through the two inner plates of the L-shaped multi-cavity steel pipe. Spiral stirrups run through the rectangular steel pipe of the L-shaped multi-cavity steel pipe. Spiral stirrups and several Concrete is filled in the multi-cavity steel tubes of a tie rod to form a multi-cavity steel tube concrete column with spiral stirrups and tie rods.