Hollow steel tube concrete stand column

Abstract

The utility model discloses a hollow steel tube concrete stand column, which relates to the technical field of constructional engineering, and comprises an outer steel tube, an inner steel tube is arranged in the outer steel tube, a reinforcing mechanism is arranged between the outer steel tube and the inner steel tube, and the reinforcing mechanism is fixedly connected with the outer steel tube and the inner steel tube through welding; a plurality of evenly-arranged ventilation assemblies are arranged on the outer sides of the outer steel pipe and the inner steel pipe in a penetrating mode. The vertical column is reasonable and reliable in structure, bending resistance, compression resistance and torsion resistance of the vertical column can be remarkably improved through the arrangement of the inner steel pipe and the reinforcing mechanism, stability and shock resistance of the vertical column under extreme conditions such as earthquakes are improved, the inner steel pipe is sealed through the arrangement of the inner steel pipe, and the service life of the vertical column is prolonged. And flame-retardant gas can be introduced into the sealed inner steel pipe through the gas nozzle, so that flame retardance can be realized by using the flame-retardant gas when a fire disaster occurs, and the fireproof performance of the hollow steel pipe concrete upright post is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of construction engineering, in particular to a hollow steel tube concrete column. Background Art

[0002] Steel tube concrete structure is a new type of composite structure formed by filling concrete into steel tubes. Since steel tube concrete structure can more effectively play the advantages of both steel and concrete, it can make the concrete in the structure under three-dimensional compression, and its compressive strength can be doubled. At the same time, it overcomes the disadvantage of steel tube structure that it is easy to have local buckling. In recent years, it has been widely used in building structures, especially high-rise building structures.

[0003] For example, Chinese patent CN211817407U discloses a hollow steel tube concrete column, which relates to the technical field of construction engineering. It includes an outer steel tube, an inner steel tube, a steel mesh cage and concrete. The inner steel tube is also provided with a flame retardant mechanism for flame retardancy, which includes an upper top plate, a lower bottom plate, an air inlet pipe, an exhaust pipe and a sealing pipe. When encountering a fire, it can make the flame retardant gas in the inner steel tube expand and overflow from the sealing pipe, thereby performing flame retardancy. However, the above-mentioned flame retardant gas has a single spray direction when it overflows, which will produce a straight spray, which will result in the inability to cover the entire area to be protected, limiting the range of gas diffusion, and thus reducing the flame retardant effect.

[0004] Currently, no effective solution has been proposed for the problems in the related technologies. Utility Model Content

[0005] In view of the problems in the related technology, the utility model proposes a hollow steel tube concrete column to overcome the above technical problems existing in the existing related technology.

[0006] To this end, the specific technical solutions adopted by the utility model are as follows:

[0007] A hollow steel tube concrete column comprises an outer steel tube, an inner steel tube is arranged inside the outer steel tube, a reinforcement mechanism is arranged between the outer steel tube and the inner steel tube, and the reinforcement mechanism is fixedly connected to the outer steel tube and the inner steel tube by welding; a plurality of evenly arranged ventilation components are penetrated on the outer sides of the outer steel tube and the inner steel tube.

[0008] Furthermore, in order to achieve the sealing of the inner steel pipe and to be able to introduce flame-retardant gas into the sealed inner steel pipe through a gas nozzle, the flame-retardant gas can be used to retard the fire in the event of a fire, thereby improving the fire resistance of the hollow steel tube concrete column, a cover plate is provided at the top and bottom ends of the inner steel pipe, and the cover plate and the inner steel pipe are fixedly connected by welding, a gas nozzle is provided through the top of the outer side of the inner steel pipe, and a number of evenly arranged threaded holes are opened on the outer side of the inner steel pipe.

[0009] Furthermore, in order to achieve the structural strength of the hollow steel tube concrete column, after pouring concrete between the outer steel tube and the inner steel tube in the later stage, the coordinated force-bearing capacity of the steel tube column and the concrete can be effectively enhanced to improve the overall bearing capacity. The reinforcement mechanism includes a number of vertical plates arranged between the outer steel tube and the inner steel tube, and steel bar rings are penetrated between the vertical plates, and the steel bar rings are evenly arranged; a number of auxiliary plates are arranged on both sides of the vertical plates, and the cross-section of the auxiliary plates is a V-shaped structure.

[0010] Furthermore, in order to enable the sealing paraffin to melt after a fire occurs and utilize the ventilation pipe to allow the flame-retardant gas inside the inner steel pipe to flow out, thereby achieving a certain flame retardancy against the fire, at the same time, when the ventilation pipe with a flared structure sprays out the flame-retardant gas, the gas can more effectively cover the target area when spraying out, thereby improving the flame retardancy effect. The ventilation assembly includes an outer ventilation pipe that is arranged through the outer steel pipe and the inner steel pipe, and sealing paraffin is arranged inside one end of the ventilation pipe; one end of the ventilation pipe is a flared structure, and the outer side of the other end of the ventilation pipe is provided with a thread that matches the threaded hole.

[0011] Furthermore, in order to achieve the coordinated installation of the outer steel pipe and the ventilation pipe, a through hole that cooperates with the expanded structure at one end of the ventilation pipe is opened on the outer side of the outer steel pipe.

[0012] The beneficial effects of the utility model are:

[0013] 1. The utility model has a reasonable and reliable structure. The arrangement of the inner steel pipe and the reinforcement mechanism can significantly improve the bending, compression and torsion resistance of the column, and can improve the stability and earthquake resistance of the column under extreme conditions such as earthquakes. The ventilation assembly provides a circulation channel for the flame-retardant gas, which helps to achieve rapid response in the event of a fire.

[0014] 2. By setting up an inner steel pipe, the inner steel pipe is sealed, and flame-retardant gas can be introduced into the sealed inner steel pipe through a gas nozzle. When a fire occurs, the flame-retardant gas can be used to retard the fire, thereby improving the fire resistance of the hollow steel tube concrete column.

[0015] 3. By setting up a reinforcement mechanism, the structural strength of the hollow steel tube concrete column is achieved. After pouring concrete between the outer steel tube and the inner steel tube in the later stage, the coordinated force-bearing capacity of the steel tube column and the concrete can be effectively enhanced to improve the overall bearing capacity.

[0016] 4. By setting up a ventilation component, the sealing paraffin can melt after a fire occurs, and the flame-retardant gas inside the inner steel pipe can flow out through the ventilation pipe, so as to achieve a certain flame retardancy against the fire. At the same time, when the vent pipe with a flared structure sprays out the flame-retardant gas, the gas can cover the target area more effectively when it is sprayed out, thereby improving the flame retardant effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a structural schematic diagram of a hollow steel tube concrete column according to an embodiment of the utility model;

[0019] Figure 2 It is a cross-sectional view of a hollow steel tube concrete column according to an embodiment of the utility model;

[0020] Figure 3 yes Figure 2 A partial enlarged view of the middle A;

[0021] Figure 4 It is a partial cross-sectional view of a hollow steel tube concrete column according to an embodiment of the utility model;

[0022] Figure 5 yes Figure 2 A partial enlarged view of point B in the middle;

[0023] Figure 6 The utility model is a schematic structural diagram of a vent pipe and sealing paraffin in a hollow steel tube concrete column according to an embodiment of the utility model.

[0024] In the figure:

[0025] 1. Outer steel pipe; 101. Through hole; 2. Inner steel pipe; 201. Cover plate; 202. Air nozzle; 203. Threaded hole; 3. Reinforcement mechanism; 301. Vertical plate; 3011. Auxiliary plate; 302. Steel bar ring; 4. Ventilation assembly; 401. Ventilation pipe; 4011. Thread; 402. Sealing paraffin. DETAILED DESCRIPTION

[0026] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments. They can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, ordinary technicians in the field should be able to understand other possible implementation methods and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0027] According to an embodiment of the utility model, a hollow steel tube concrete column is provided.

[0028] The present invention is now further described in conjunction with the accompanying drawings and specific implementation methods. Figure 1-Figure 6 As shown, the hollow steel tube concrete column according to the embodiment of the utility model includes an outer steel tube 1, an inner steel tube 2 is arranged inside the outer steel tube 1, a reinforcement mechanism 3 is arranged between the outer steel tube 1 and the inner steel tube 2, and the reinforcement mechanism 3 is fixedly connected to the outer steel tube 1 and the inner steel tube 2 by welding; a plurality of evenly arranged ventilation components 4 are penetrated through the outer sides of the outer steel tube 1 and the inner steel tube 2.

[0029] With the aid of the above-mentioned technical scheme of the utility model, the structure of the utility model is reasonable and reliable. The arrangement of the inner steel pipe 2 and the reinforcement mechanism 3 can significantly improve the bending, compression and torsion resistance of the column, and can improve the stability and seismic resistance of the column under extreme conditions such as earthquakes. The ventilation component 4 provides a circulation channel for the flame-retardant gas, which helps to achieve rapid response in the event of a fire.

[0030] In one embodiment, for the above-mentioned inner steel pipe 2, a cover plate 201 is provided at the top and bottom ends of the inner steel pipe 2, and the cover plate 201 and the inner steel pipe 2 are fixedly connected by welding, and a gas nozzle 202 is provided through the top of the outer side of the inner steel pipe 2, and a plurality of evenly arranged threaded holes 203 are opened on the outer side of the inner steel pipe 2, thereby achieving the sealing of the inner steel pipe 2, and flame-retardant gas can be introduced into the sealed inner steel pipe 2 through the gas nozzle 202, and the flame-retardant gas can be used to retard the inner steel pipe 2 when a fire occurs, thereby improving the fire resistance of the hollow steel tube concrete column.

[0031] In addition, it should be noted that the gas nozzle 202 that can both inflate and exhaust is usually called an "inflation and exhaust nozzle". It can achieve two opposite functions, namely inflation and exhaust, wherein the flame-retardant gas can be filled with non-combustible gases such as argon, nitrogen or carbon dioxide.

[0032] In one embodiment, for the above-mentioned reinforcement mechanism 3, the reinforcement mechanism 3 includes a plurality of vertical plates 301 arranged between the outer steel pipe 1 and the inner steel pipe 2, and steel rings 302 are penetrated between the vertical plates 301, and the plurality of steel rings 302 are evenly arranged; a plurality of auxiliary plates 3011 are arranged on both sides of the vertical plates 301, and the cross-section of the auxiliary plates 3011 is a V-shaped structure, thereby realizing the structural strength of the hollow steel tube concrete column, and can effectively enhance the coordinated force bearing capacity of the steel tube column and concrete after pouring concrete between the outer steel pipe 1 and the inner steel pipe 2 in the later stage, and improve the overall bearing capacity.

[0033] In one embodiment, for the above-mentioned ventilation assembly 4, the ventilation assembly 4 includes an outer ventilation pipe 401 that penetrates the outer steel pipe 1 and the inner steel pipe 2, and sealing paraffin 402 is arranged inside one end of the ventilation pipe 401; one end of the ventilation pipe 401 is a flared structure, and the outer side of the other end of the ventilation pipe 401 is provided with a thread 4011 that matches the threaded hole 203, so that after a fire occurs, the sealing paraffin 402 can melt, and the ventilation pipe 401 can be used to make the flame-retardant gas inside the inner steel pipe 2 flow out, so that a certain flame retardancy can be achieved for the fire. At the same time, when the ventilation pipe 401 with a flared structure sprays out the flame-retardant gas, the gas can more effectively cover the target area when spraying, thereby improving the flame retardant effect.

[0034] In addition, it should be noted that a sealing ring is provided between the ventilation pipe 401 and the inner steel pipe 2 to ensure the sealing between the ventilation pipe 401 and the inner steel pipe 2, and the interior of the ventilation pipe 401 is also filled with foamed stone, which is not shown in the figure. This is the prior art and will not be elaborated here.

[0035] In one embodiment, for the outer steel pipe 1 , a through hole 101 matching with the expanded structure at one end of the vent pipe 401 is provided on the outer side of the outer steel pipe 1 , thereby achieving matching installation of the outer steel pipe 1 and the vent pipe 401 .

[0036] In order to facilitate understanding of the above technical solution of the present invention, the working principle or operation method of the present invention in the actual process is described in detail below.

[0037] In actual application, first, the cover plate 201 is welded to the top and bottom ends of the inner steel pipe 2 to ensure the internal sealing of the inner steel pipe 2, and then the reinforcement mechanism 3 is welded and fixed to the inner steel pipe 2 and the outer steel pipe 1 respectively, and then the vent pipe 401 is installed on the inner steel pipe 2, and the vent pipe 401 is fixed by utilizing the cooperation of the thread 4011 and the threaded hole 203, and then the flared end of the vent pipe 401 is sealed by sealing paraffin, and then the interior of the inner steel pipe 2 is evacuated through the gas nozzle 202, and flame-retardant gas is introduced, and then concrete is poured between the inner steel pipe 2 and the outer steel pipe 1 to form a hollow steel pipe concrete column, after which the hollow steel pipe concrete column can be used subsequently.

[0038] In summary, with the aid of the above technical solutions of the utility model, the utility model has a reasonable and reliable structure. The arrangement of the inner steel pipe 2 and the reinforcement mechanism 3 can significantly improve the bending, compression and torsion resistance of the column, and can improve the stability and earthquake resistance of the column under extreme conditions such as earthquakes. The ventilation component 4 provides a circulation channel for the flame-retardant gas, which helps to achieve a rapid response in the event of a fire. By arranging the inner steel pipe 2, the inner steel pipe 2 is sealed, and the flame-retardant gas can be introduced into the sealed inner steel pipe 2 through the air nozzle 202. When a fire occurs, the flame-retardant gas can be used to retard the fire, thereby improving the fireproof performance of the hollow steel tube concrete column. By arranging the reinforcement mechanism 3, the structural strength of the hollow steel tube concrete column is achieved, and after pouring concrete between the outer steel pipe 1 and the inner steel pipe 2 in the later stage, the coordinated force-bearing capacity of the steel pipe column and the concrete can be effectively enhanced, thereby improving the overall bearing capacity. By providing the ventilation assembly 4, the sealing paraffin 402 can be melted after a fire occurs, and the flame-retardant gas inside the inner steel pipe 2 can be flowed out by utilizing the ventilation pipe 401, thereby achieving a certain flame retardancy against the fire. At the same time, when the flame-retardant gas is ejected by the flared structure of the ventilation pipe 401, the gas can more effectively cover the target area when ejected, thereby improving the flame retardancy effect.

[0039] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A hollow steel tube concrete column, characterized in that: It comprises an outer steel pipe (1), an inner steel pipe (2) is arranged inside the outer steel pipe (1), a reinforcement mechanism (3) is arranged between the outer steel pipe (1) and the inner steel pipe (2), and the reinforcement mechanism (3) and the outer steel pipe (1) and the inner steel pipe (2) are fixedly connected by welding; A plurality of evenly arranged ventilation components (4) are provided through the outer sides of the outer steel pipe (1) and the inner steel pipe (2).

2. A hollow steel tube concrete column according to claim 1, characterized in that: The top and bottom ends of the inner steel pipe (2) are both provided with cover plates (201), and the cover plates (201) are fixedly connected to the inner steel pipe (2) by welding. A gas nozzle (202) is provided through the top of the outer side of the inner steel pipe (2), and a plurality of evenly arranged threaded holes (203) are provided on the outer side of the inner steel pipe (2).

3. A hollow steel tube concrete column according to claim 2, characterized in that: The reinforcement mechanism (3) comprises a plurality of vertical plates (301) arranged between the outer steel pipe (1) and the inner steel pipe (2), steel bar rings (302) are arranged through the vertical plates (301), and the plurality of steel bar rings (302) are evenly arranged.

4. The hollow steel tube concrete column according to claim 3, characterized in that: A plurality of auxiliary plates (3011) are arranged on both sides of the vertical plate (301), and the cross section of the auxiliary plates (3011) is a V-shaped structure.

5. The hollow steel tube concrete column according to claim 4, characterized in that: The ventilation assembly (4) comprises an outer ventilation pipe (401) which is arranged to penetrate the outer steel pipe (1) and the inner steel pipe (2), and a sealing paraffin (402) is arranged inside one end of the ventilation pipe (401).

6. The hollow steel tube concrete column according to claim 5, characterized in that: One end of the ventilation pipe (401) is a flared structure, and the outer side of the other end of the ventilation pipe (401) is provided with a thread (4011) matching with the threaded hole (203).

7. The hollow steel tube concrete column according to claim 6, characterized in that: The outer side of the outer steel pipe (1) is provided with a through hole (101) which matches the expanded structure at one end of the ventilation pipe (401).

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